{"id":4792,"date":"2026-03-10T10:48:40","date_gmt":"2026-03-10T02:48:40","guid":{"rendered":"https:\/\/www.opticalcutting.com\/?p=4792"},"modified":"2026-09-29T17:33:33","modified_gmt":"2026-09-29T09:33:33","slug":"subsurface-damage-optical-lens","status":"publish","type":"post","link":"https:\/\/www.opticalcutting.com\/vi\/subsurface-damage-optical-lens\/","title":{"rendered":"5 Causes of Subsurface Damage Optical Lens During Cutting"},"content":{"rendered":"<p class=\"wp-block-paragraph\">M\u1ed9t ph\u00f4i k\u00ednh c\u00f3 th\u1ec3 tr\u00f4ng ho\u00e0n h\u1ea3o sau khi c\u1eaft b\u1eb1ng m\u00e1y c\u01b0a nh\u01b0ng v\u1eabn b\u1ecb lo\u1ea1i b\u1ecf. L\u1ed7i t\u1ed1n k\u00e9m nh\u1ea5t trong quang h\u1ecdc ch\u00ednh x\u00e1c l\u00e0 <strong>subsurface damage optical lens<\/strong> c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00f4ng nh\u00ecn th\u1ea5y \u2014 m\u1ed9t l\u1edbp vi v\u1ebft n\u1ee9t n\u1eb1m b\u00ean d\u01b0\u1edbi b\u1ec1 m\u1eb7t c\u1eaft, kh\u00f4ng nh\u00ecn th\u1ea5y b\u1eb1ng m\u1eaft, b\u1eb1ng ki\u1ec3m tra \u00e1nh s\u00e1ng m\u1ea1nh v\u00e0 b\u1eb1ng b\u1ea5t k\u1ef3 m\u00e1y \u0111o bi\u00ean d\u1ea1ng n\u00e0o. N\u00f3 t\u1ed3n t\u1ea1i sau khi m\u00e0i th\u00f4. N\u00f3 th\u01b0\u1eddng t\u1ef1 bi\u1ec3u hi\u1ec7n sau khi \u0111\u00e1nh b\u00f3ng, khi chi ti\u1ebft \u0111\u00e3 mang ph\u1ea7n l\u1edbn chi ph\u00ed c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ebft nguy\u00ean nh\u00e2n g\u00e2y ra h\u01b0 h\u1ecfng \u0111\u00f3 trong qu\u00e1 tr\u00ecnh c\u1eaft l\u00e0 \u0111i\u1ec1u cho ph\u00e9p b\u1ea1n quy\u1ebft \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1eadt li\u1ec7u d\u01b0 c\u1ea7n \u0111\u1ec3 l\u1ea1i cho n\u00f3. B\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <strong>five key causes<\/strong> c\u1ee7a <strong>subsurface damage optical lens<\/strong> s\u1ea3n xu\u1ea5t ph\u1ea3i thi\u1ebft k\u1ebf xung quanh, c\u00e1ch \u0111o l\u1edbp h\u01b0 h\u1ecfng th\u1ef1c t\u1ebf, \u0111\u1ed9 s\u00e2u c\u1ee7a n\u00f3 trong c\u00e1c v\u1eadt li\u1ec7u h\u1ed3ng ngo\u1ea1i v\u00e0 quang h\u1ecdc ph\u1ed5 bi\u1ebfn, v\u00e0 c\u00e1ch chu\u1ed7i m\u00e0i lo\u1ea1i b\u1ecf n\u00f3. \u0110\u1ed1i v\u1edbi b\u1ed1i c\u1ea3nh quy tr\u00ecnh r\u1ed9ng h\u01a1n, t\u1ed5ng quan c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/www.opticalcutting.com\/vi\/optical-lens-manufacturing-process\/\">optical lens manufacturing process<\/a> bao g\u1ed3m to\u00e0n b\u1ed9 quy tr\u00ecnh t\u1eeb ph\u00f4i \u0111\u1ebfn quang h\u1ecdc ho\u00e0n ch\u1ec9nh.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2026\/03\/\u73bb\u7483\u5207\u5272SG20-1024x1024.jpg\" alt=\"ki\u1ec3m so\u00e1t th\u1ea5u k\u00ednh quang h\u1ecdc h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t trong qu\u00e1 tr\u00ecnh c\u1eaft d\u00e2y kim c\u01b0\u01a1ng\" class=\"wp-image-4793\" style=\"width:376px;height:auto\" title=\"M\u00e1y c\u1eaft d\u00e2y kim c\u01b0\u01a1ng v\u00f4 t\u1eadn Vimfun cho v\u1eadt li\u1ec7u quang h\u1ecdc v\u00e0 h\u1ed3ng ngo\u1ea1i\"\/><figcaption class=\"wp-element-caption\">C\u00e1c th\u00f4ng s\u1ed1 c\u1eaft \u0111\u1eb7t l\u1edbp h\u01b0 h\u1ecfng tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 giai \u0111o\u1ea1n m\u00e0i n\u00e0o c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf n\u00f3.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ed7i Quang h\u1ecdc Ph\u00f4i K\u00ednh H\u01b0 H\u1ecfng D\u01b0\u1edbi B\u1ec1 M\u1eb7t Th\u1ef1c S\u1ef1 L\u00e0 G\u00ec<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t (SSD) l\u00e0 v\u00f9ng vi v\u1ebft n\u1ee9t v\u00e0 v\u1eadt li\u1ec7u bi\u1ebfn d\u1ea1ng d\u1ebbo k\u00e9o d\u00e0i b\u00ean d\u01b0\u1edbi b\u1ec1 m\u1eb7t gia c\u00f4ng. M\u1ecdi quy tr\u00ecnh m\u00e0i m\u00f2n \u0111\u1ec1u t\u1ea1o ra n\u00f3 \u2014 c\u01b0a, t\u1ea1o h\u00ecnh, m\u00e0i ph\u1eb3ng \u2014 v\u00e0 n\u00f3 kh\u00f4ng gi\u1ed1ng v\u1edbi hai con s\u1ed1 m\u00e0 h\u1ea7u h\u1ebft ng\u01b0\u1eddi mua h\u1ecfi v\u1ec1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t (Ra, Sq)<\/strong> m\u00f4 t\u1ea3 k\u1ebft c\u1ea5u b\u1ea1n c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 \u0111o b\u1eb1ng quang h\u1ecdc. N\u00f3 kh\u00f4ng n\u00f3i l\u00ean \u0111i\u1ec1u g\u00ec v\u1ec1 nh\u1eefng g\u00ec b\u00ean d\u01b0\u1edbi.<\/li>\n\n\n\n<li><strong>L\u1ed7i h\u00ecnh d\u1ea1ng (PV, b\u1ea5t th\u01b0\u1eddng)<\/strong> m\u00f4 t\u1ea3 h\u00ecnh d\u1ea1ng c\u1ee7a b\u1ec1 m\u1eb7t so v\u1edbi h\u00ecnh d\u1ea1ng danh ngh\u0129a c\u1ee7a n\u00f3. C\u0169ng l\u00e0 m\u1ed9t thu\u1ed9c t\u00ednh b\u1ec1 m\u1eb7t.<\/li>\n\n\n\n<li><strong>Subsurface damage<\/strong> l\u00e0 \u0111\u1ed9 s\u00e2u v\u00e0o b\u00ean trong v\u1eadt li\u1ec7u. M\u1ed9t chi ti\u1ebft c\u00f3 th\u1ec3 \u0111\u00e1nh b\u00f3ng \u0111\u1ea1t Ra tuy\u1ec7t v\u1eddi nh\u01b0ng v\u1eabn mang m\u1ed9t l\u1edbp h\u01b0 h\u1ecfng l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00e1n x\u1ea1 \u00e1nh s\u00e1ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao <strong>subsurface damage optical lens<\/strong> c\u00e1c l\u1ed7i t\u1ed1n nhi\u1ec1u chi ph\u00ed nh\u01b0 v\u1eady: m\u1ecdi c\u00f4ng c\u1ee5 ki\u1ec3m tra tr\u00ean s\u00e0n x\u01b0\u1edfng quang h\u1ecdc th\u00f4ng th\u01b0\u1eddng \u0111\u1ec1u \u0111o b\u1ec1 m\u1eb7t, v\u00e0 l\u1ed7i kh\u00f4ng n\u1eb1m tr\u00ean b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Mechanical Stress from Cutting Forces<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh c\u1eaft, c\u00e1c l\u1ef1c do d\u00e2y ho\u1eb7c d\u1ee5ng c\u1ee5 t\u00e1c d\u1ee5ng t\u1ea1o ra \u1ee9ng su\u1ea5t b\u00ean d\u01b0\u1edbi b\u1ec1 m\u1eb7t. Trong c\u00e1c v\u1eadt li\u1ec7u quang h\u1ecdc gi\u00f2n, nh\u1eefng \u1ee9ng su\u1ea5t n\u00e0y t\u1ea1o ra <strong>radial and lateral micro-cracks<\/strong> lan truy\u1ec1n v\u01b0\u1ee3t qu\u00e1 m\u1eb7t c\u1eaft danh ngh\u0129a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 ti\u1ebfn l\u00e0 bi\u1ebfn s\u1ed1 m\u00e0 h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi l\u00e0m sai. \u0110\u1ea9y t\u1ed1c \u0111\u1ed9 ti\u1ebfn l\u00e0m r\u00fat ng\u1eafn v\u1ebft c\u1eaft v\u00e0 k\u00e9o d\u00e0i l\u1edbp h\u01b0 h\u1ecfng, v\u00e0 s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i kh\u00f4ng tuy\u1ebfn t\u00ednh \u2014 20% cu\u1ed1i c\u00f9ng c\u1ee7a th\u1eddi gian chu k\u1ef3 b\u1ea1n ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m h\u01a1n nhi\u1ec1u so v\u1edbi chi ph\u00ed m\u00e0i b\u1ed5 sung. Tr\u00ean c\u00e1c m\u00e1y d\u00f2ng SG c\u1ee7a ch\u00fang t\u00f4i, c\u00e1c tr\u1ee5c Y v\u00e0 Z c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 0,01 mm v\u1edbi \u0111\u1ed9 l\u1eb7p l\u1ea1i \u00b10,01 mm v\u00e0 ch\u1ea1y t\u1eeb 0 \u0111\u1ebfn 1000 mm\/ph\u00fat, nghe c\u00f3 v\u1ebb h\u00e0o ph\u00f3ng cho \u0111\u1ebfn khi b\u1ea1n l\u00e0m vi\u1ec7c v\u1edbi th\u1ee9 g\u00ec \u0111\u00f3 nh\u01b0 silicon carbide, n\u01a1i t\u1ed1c \u0111\u1ed9 ti\u1ebfn s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf kho\u1ea3ng 0,2 mm\/ph\u00fat. V\u1eadt li\u1ec7u gi\u00f2n kh\u00f4ng quan t\u00e2m m\u00e1y c\u00f3 kh\u1ea3 n\u0103ng g\u00ec.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00eam v\u1ec1 c\u00e1ch \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng v\u1ebft c\u1eaft trong th\u1ef1c t\u1ebf: <a href=\"https:\/\/www.opticalcutting.com\/vi\/optical-cutting-quality\/\">optical cutting quality<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Thermal Effects and Heat Accumulation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1eaft t\u1ed1c \u0111\u1ed9 cao t\u1ea1o ra nhi\u1ec7t c\u1ee5c b\u1ed9, \u0111\u1eb7c bi\u1ec7t \u1edf c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 BK7, silica n\u00f3ng ch\u1ea3y v\u00e0 gecmani. C\u00e1c gradient nhi\u1ec7t t\u1ea1o ra c\u00e1c v\u00f9ng \u1ee9ng su\u1ea5t k\u00e9o \u0111\u1ec3 l\u1ea1i <strong>irreversible subsurface deformation<\/strong> v\u00e0 n\u1ee9t v\u1ee1 ph\u00eda sau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 n\u01a1i nhi\u1ec1u l\u1eddi khuy\u00ean \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u1edf n\u00ean sai l\u1ea7m. \u0110\u1ed9 c\u0103ng d\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t con s\u1ed1 duy nh\u1ea5t b\u1ea1n \u0111\u1eb7t m\u1ed9t l\u1ea7n \u2014 n\u00f3 theo \u0111\u01b0\u1eddng k\u00ednh d\u00e2y, v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb ho\u1ea1t \u0111\u1ed9ng th\u1ea5p h\u01a1n h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi gi\u1ea3 \u0111\u1ecbnh:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>D\u00e2y v\u00f2ng k\u00edn OD<\/th><th>D\u00e2y l\u00f5i<\/th><th>H\u1ea1t m\u00e0i<\/th><th>\u0110\u1ed9 c\u0103ng l\u00e0m vi\u1ec7c<\/th><\/tr><\/thead><tbody><tr><td>0.30 mm<\/td><td>0,21 mm<\/td><td>D54<\/td><td>60 N<\/td><\/tr><tr><td>0.35 mm<\/td><td>0,21\u20130,25 mm<\/td><td>D76<\/td><td>80 N<\/td><\/tr><tr><td>0,45 mm<\/td><td>0,28\u20130,30 mm<\/td><td>D76<\/td><td>100 N<\/td><\/tr><tr><td>0,33 mm<\/td><td>D76 \/ D91<\/td><td>130 N<\/td><td>0,50\u20130,55 mm<\/td><\/tr><tr><td>0,36\u20130,39 mm<\/td><td>D91<\/td><td>140 N<\/td><td>0,60\u20130,65 mm<\/td><\/tr><tr><td>0,51\u20130,60 mm<\/td><td>D107<\/td><td>170 N<\/td><td>\u0110\u1ed9 c\u0103ng l\u00e0m vi\u1ec7c theo \u0111\u01b0\u1eddng k\u00ednh d\u00e2y. \u0110\u00e2y l\u00e0 c\u00e1c \u0111i\u1ec3m \u0111\u1eb7t tham chi\u1ebfu, kh\u00f4ng ph\u1ea3i gi\u1edbi h\u1ea1n.<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">M\u00e1y gi\u1eef \u0111\u1ed9 c\u0103ng t\u1ef1 \u0111\u1ed9ng v\u00e0 trong th\u1ef1c t\u1ebf, ch\u00fang t\u00f4i ch\u1ea1y 10\u201320 N \u1edf m\u1ed7i b\u00ean c\u1ee7a gi\u00e1 tr\u1ecb b\u1ea3ng t\u00f9y thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 s\u00e2u c\u1eaft. T\u1ed1c \u0111\u1ed9 tuy\u1ebfn t\u00ednh c\u1ee7a d\u00e2y n\u1eb1m trong m\u1ed9t d\u1ea3i t\u01b0\u01a1ng t\u1ef1: t\u1ed1i \u0111a 52 m\/s tr\u00ean.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">, 58 m\/s tr\u00ean SG20, 61 m\/s tr\u00ean SGI 40. B\u1ea5t k\u1ef3 ai b\u00e1o gi\u00e1 80 m\/s cho c\u00f4ng vi\u1ec7c quang h\u1ecdc \u0111\u1ec1u b\u00e1o gi\u00e1 m\u00e1y c\u01b0a \u0111\u00e1 kh\u1ed1i l\u1edbn, kh\u00f4ng ph\u1ea3i m\u00e1y c\u1eaft ph\u00f4i k\u00ednh. <a href=\"https:\/\/www.opticalcutting.com\/vi\/may-cat-lat-tam-wafer-germanium-sg-40\/\">m\u00e1y c\u1eaft l\u00e1t wafer germanium SG40<\/a>, 58 m\/s tr\u00ean SG20, 61 m\/s tr\u00ean SGI 40. B\u1ea5t k\u1ef3 ai tr\u00edch d\u1eabn 80 m\/s cho c\u00f4ng vi\u1ec7c quang h\u1ecdc \u0111ang tr\u00edch d\u1eabn m\u1ed9t m\u00e1y c\u01b0a \u0111\u00e1 kh\u1ed1i l\u1edbn, kh\u00f4ng ph\u1ea3i m\u1ed9t m\u00e1y c\u1eaft ph\u00f4i k\u00ednh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 v\u00e0 l\u1ef1c c\u0103ng ch\u1ec9 quan tr\u1ecdng n\u1ebfu ch\u1ea5t l\u00e0m m\u00e1t th\u1ef1c s\u1ef1 ti\u1ebfp c\u1eadn v\u1ebft c\u1eaft. M\u1ed9t s\u1ee3i d\u00e2y \u0111\u01b0\u1ee3c c\u0103ng \u0111\u00fang c\u00e1ch ch\u1ea1y kh\u00f4 s\u1ebd g\u00e2y ra nhi\u1ec1u t\u1ed5n th\u01b0\u01a1ng nhi\u1ec7t h\u01a1n trong m\u1ed9t l\u1ea7n ch\u1ea1y so v\u1edbi m\u1ed9t s\u1ee3i d\u00e2y b\u1ecb c\u0103ng k\u00e9m nh\u01b0ng \u0111\u01b0\u1ee3c l\u00e0m m\u00e1t \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Tool Wear and Abrasive Degradation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ee3i d\u00e2y b\u1ecb m\u00f2n v\u00e0 v\u1eadt li\u1ec7u m\u00e0i m\u00f2n b\u1ecb m\u00f2n t\u1ea1o ra c\u00e1c l\u1ef1c kh\u00f4ng \u0111\u1ec1u v\u00e0 <strong>unstable cutting conditions<\/strong>. K\u1ebft qu\u1ea3 l\u00e0 v\u1ebft l\u00f5m c\u1ee5c b\u1ed9 v\u00e0 nhi\u1ec1u v\u1ebft n\u1ee9t h\u01a1n d\u01b0\u1edbi b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea1m b\u1eaby \u1edf \u0111\u00e2y l\u00e0 d\u00e2y kim c\u01b0\u01a1ng kh\u00f4ng b\u1ecb h\u1ecfng \u0111\u1ed9t ng\u1ed9t. N\u00f3 suy gi\u1ea3m d\u1ea7n. Th\u1eddi gian c\u1eaft t\u0103ng th\u00eam 10%, r\u1ed3i 20%, ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u00f9 b\u1eb1ng c\u00e1ch t\u0103ng t\u1ed1c \u0111\u1ed9 n\u1ea1p li\u1ec7u, v\u00e0 l\u1edbp h\u01b0 h\u1ecfng \u00e2m th\u1ea7m ph\u00e1t tri\u1ec3n trong nhi\u1ec1u tu\u1ea7n tr\u01b0\u1edbc khi ai \u0111\u00f3 li\u00ean h\u1ec7 n\u00f3 v\u1edbi s\u1ef1 s\u1ee5t gi\u1ea3m n\u0103ng su\u1ea5t \u1edf kh\u00e2u \u0111\u00e1nh b\u00f3ng. Theo quy t\u1eafc th\u1ef1c t\u1ebf, d\u00e2y l\u1eb7p v\u00f4 t\u1eadn cho ph\u00e9p c\u1eaft kho\u1ea3ng 1\u20133 m\u00b2 t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u, v\u00e0 c\u00e1c b\u00e1nh xe d\u1eabn h\u01b0\u1edbng k\u00e9o d\u00e0i hai \u0111\u1ebfn ba th\u00e1ng trong s\u1ea3n xu\u1ea5t th\u00f4ng th\u01b0\u1eddng. Theo d\u00f5i di\u1ec7n t\u00edch c\u1eaft, kh\u00f4ng ph\u1ea3i ng\u00e0y theo l\u1ecbch \u2014 s\u1ef1 hao h\u1ee5t v\u1eadt t\u01b0 ti\u00eau hao l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a <strong>subsurface damage optical lens<\/strong> c\u00e1c v\u1ea5n \u0111\u1ec1 xu\u1ea5t hi\u1ec7n m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o trong ch\u01b0\u01a1ng tr\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Brittle Material Properties<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u quang h\u1ecdc l\u00e0 <strong>low fracture toughness<\/strong> c\u00e1c ch\u1ea5t n\u1ec1n. C\u00e1c nhi\u1ec5u \u0111\u1ed9ng nh\u1ecf trong qu\u00e1 tr\u00ecnh c\u1eaft g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t d\u01b0\u1edbi b\u1ec1 m\u1eb7t, v\u00e0 c\u00e1c v\u1eadt li\u1ec7u h\u1ed3ng ngo\u1ea1i nh\u01b0 germanium v\u00e0 k\u1ebdm selenide l\u00e0 nh\u00f3m nh\u1ea1y c\u1ea3m nh\u1ea5t v\u1edbi c\u1ea3 \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 nhi\u1ec7t. Do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u s\u1ebd thay \u0111\u1ed5i dung sai tr\u01b0\u1edbc khi n\u00f3 thay \u0111\u1ed5i b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec kh\u00e1c \u2014 xem t\u00f3m t\u1eaft c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/www.opticalcutting.com\/vi\/optical-lens-materials\/\">optical lens materials<\/a> v\u00e0 d\u1eef li\u1ec7u v\u1eadt l\u00fd \u0111\u00e3 xu\u1ea5t b\u1ea3n trong <a href=\"https:\/\/www.crystran.com\/optical-materials\/germanium-ge\/\" target=\"_blank\" rel=\"noopener noreferrer\">T\u1edd v\u1eadt li\u1ec7u germanium c\u1ee7a Crystran<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c ch\u00fa \u00fd tr\u00ean s\u00e0n x\u01b0\u1edfng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra b\u1eb1ng m\u1eaft v\u00e0 m\u00e1y \u0111o bi\u00ean d\u1ea1ng th\u00f4ng th\u01b0\u1eddng <strong>kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c khuy\u1ebft t\u1eadt d\u01b0\u1edbi b\u1ec1 m\u1eb7t<\/strong>, do \u0111\u00f3 h\u01b0 h\u1ecfng s\u1ebd l\u00e0m h\u1ecfng m\u1ed9t l\u00f4 h\u00e0ng m\u00e0 v\u1eabn v\u01b0\u1ee3t qua ki\u1ec3m tra \u0111\u1ea7u v\u00e0o m\u00e0 kh\u00f4ng c\u00f3 nh\u1eadn x\u00e9t. N\u1ebfu kh\u00f4ng c\u00f3 gi\u00e1m s\u00e1t trong qu\u00e1 tr\u00ecnh, c\u00e1c v\u1ebft n\u1ee9t s\u1ebd h\u00ecnh th\u00e0nh, lan truy\u1ec1n qua c\u00e1c giai \u0111o\u1ea1n m\u00e0i, v\u00e0 bi\u1ebfn th\u00e0nh th\u1eddi gian \u0111\u00e1nh b\u00f3ng v\u00e0 hao h\u1ee5t v\u1eadt li\u1ec7u \u1edf \u0111i\u1ec3m t\u1ed1n k\u00e9m nh\u1ea5t c\u1ee7a quy tr\u00ecnh. \u0110\u1ebfn khi m\u1ed9t <strong>subsurface damage optical lens<\/strong> v\u1ea5n \u0111\u1ec1 tr\u1edf n\u00ean r\u00f5 r\u00e0ng, h\u00e0nh \u0111\u1ed9ng kh\u1eafc ph\u1ee5c r\u1ebb nh\u1ea5t \u2014 thay \u0111\u1ed5i v\u1ebft c\u1eaft \u2014 \u0111\u00e3 \u1edf ph\u00eda sau b\u1ea1n nhi\u1ec1u giai \u0111o\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1edbp h\u01b0 h\u1ecfng th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c \u0111o nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi ph\u00e2n bi\u1ec7t c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e3 \u0111o <strong>subsurface damage optical lens<\/strong> \u0111\u1ed9 s\u00e2u v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e3 \u0111\u1ecdc v\u1ec1 n\u00f3. M\u1ecdi ph\u01b0\u01a1ng ph\u00e1p tr\u1ea3 v\u1ec1 m\u1ed9t con s\u1ed1 \u0111\u1ed9 s\u00e2u th\u1ef1c \u0111\u1ec1u l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e1 h\u1ee7y.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>Method<\/th><th>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/th><th>B\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c g\u00ec<\/th><th>Ph\u00e1 h\u1ee7y?<\/th><th>T\u00ednh th\u1ef1c t\u1ebf tr\u00ean s\u00e0n x\u01b0\u1edfng<\/th><\/tr><\/thead><tbody><tr><td><strong>Kh\u1eafc v\u00e0 ki\u1ec3m tra<\/strong><\/td><td>Kh\u1eafc h\u00f3a h\u1ecdc m\u1edf c\u00e1c v\u1ebft n\u1ee9t cho \u0111\u1ebfn khi ch\u00fang c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y b\u1eb1ng quang h\u1ecdc<\/td><td>\u0110\u1ed9 s\u00e2u v\u1ebft n\u1ee9t \u0111\u00e3 l\u1ed9 ra<\/td><td>\u0110\u00fang<\/td><td>Cao \u2014 l\u1ef1a ch\u1ecdn th\u00f4ng th\u01b0\u1eddng<\/td><\/tr><tr><td><strong>\u0110\u00e1nh b\u00f3ng theo g\u00f3c c\u00f4n \/ g\u00f3c<\/strong><\/td><td>\u0110\u00e1nh b\u00f3ng \u1edf m\u1ed9t g\u00f3c n\u00f4ng \u0111\u1ec3 \u0111\u1ed9 s\u00e2u \u0111\u01b0\u1ee3c ph\u00f3ng \u0111\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t<\/td><td>H\u1ed3 s\u01a1 \u0111\u1ed9 s\u00e2u<\/td><td>\u0110\u00fang<\/td><td>Trung b\u00ecnh<\/td><\/tr><tr><td><strong>M\u1eb7t c\u1eaft + k\u00ednh hi\u1ec3n vi<\/strong><\/td><td>C\u1eaft l\u00e1t, g\u1eafn, \u0111\u00e1nh b\u00f3ng, ch\u1ee5p \u1ea3nh<\/td><td>\u0110i\u1ec3m tham chi\u1ebfu \u0111\u01a1n \u0111i\u1ec3m<\/td><td>\u0110\u00fang<\/td><td>Th\u1ea5p \u2014 ch\u1eadm, m\u1ed9t \u0111i\u1ec3m tr\u00ean m\u1ed7i m\u1eabu<\/td><\/tr><tr><td><strong>\u0110i\u1ec3m MRF \/ l\u00f5m<\/strong><\/td><td>Lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u theo c\u00e1c l\u1edbp \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, ki\u1ec3m tra t\u1eebng l\u1edbp<\/td><td>Ph\u00e2n b\u1ed1 \u0111\u1ed9 s\u00e2u<\/td><td>\u0110\u00fang<\/td><td>Th\u1ea5p \u2014 c\u1ea7n thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng<\/td><\/tr><tr><td>Giao thoa \u00e1nh s\u00e1ng tr\u1eafng, \u0111\u1ed3ng ti\u00eau, AFM<\/td><td>\u0110o l\u01b0\u1eddng b\u1ec1 m\u1eb7t quang h\u1ecdc<\/td><td><strong>Ch\u1ec9 b\u1ec1 m\u1eb7t \u2014 kh\u00f4ng c\u00f3 \u0111\u1ed9 s\u00e2u SSD<\/strong><\/td><td>No<\/td><td>Cao, nh\u01b0ng tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi kh\u00e1c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Kh\u00f4ng c\u00f3 c\u00e1ch n\u00e0o kh\u00f4ng ph\u00e1 h\u1ee7y \u0111\u1ec3 \u0111o h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t trong m\u1ed9t b\u1ed9 ph\u1eadn quang h\u1ecdc \u0111\u00e3 ho\u00e0n thi\u1ec7n.<\/strong> M\u1ecdi ph\u01b0\u01a1ng ph\u00e1p tr\u1ea3 v\u1ec1 m\u1ed9t con s\u1ed1 \u0111\u1ed9 s\u00e2u th\u1ef1c \u0111\u1ec1u ph\u00e1 h\u1ee7y b\u1ed9 ph\u1eadn m\u00e0 n\u00f3 \u0111o. N\u1ebfu m\u1ed9t nh\u00e0 cung c\u1ea5p b\u00e1o gi\u00e1 \u0111\u1ed9 s\u00e2u SSD v\u00e0 g\u1ecdi ph\u00e9p \u0111o l\u00e0 kh\u00f4ng ph\u00e1 h\u1ee7y, h\u00e3y h\u1ecfi xem th\u1ef1c t\u1ebf \u0111\u00e3 \u0111o c\u00e1i g\u00ec \u2014 \u0111\u00f3 l\u00e0 b\u1ec1 m\u1eb7t.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f2n OCT, qu\u00e9t C b\u1eb1ng si\u00eau \u00e2m v\u00e0 CT X-quang th\u00ec sao? Ch\u00fang xu\u1ea5t hi\u1ec7n trong nhi\u1ec1u b\u00e0i b\u00e1o v\u1ec1 SSD v\u00e0 ch\u00fang l\u00e0 nh\u1eefng k\u1ef9 thu\u1eadt th\u1ef1c s\u1ef1 h\u1eefu \u00edch \u2014 trong c\u00e1c v\u1eadt li\u1ec7u composite d\u00e0y, trong c\u00e1c m\u1ed1i h\u00e0n, trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i. Tr\u00ean m\u1ed9t mi\u1ebfng ph\u00f4i quang h\u1ecdc d\u00e0y 5 mm, ch\u00fang l\u00e0 c\u00f4ng c\u1ee5 sai: \u0111\u1ed9 ph\u00e2n gi\u1ea3i kh\u00f4ng gian c\u1ee7a ch\u00fang th\u00f4 h\u01a1n m\u1ed9t \u0111\u1ebfn hai b\u1eadc \u0111\u1ed9 l\u1edbn so v\u1edbi l\u1edbp h\u01b0 h\u1ecfng b\u1ea1n \u0111ang c\u1ed1 g\u1eafng t\u00ecm, v\u00ec v\u1eady m\u1ed9t l\u1ea7n qu\u00e9t s\u1ea1ch kh\u00f4ng ch\u1ee9ng minh \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec. Ch\u00fang t\u00f4i ch\u01b0a t\u00ecm th\u1ea5y tr\u01b0\u1eddng h\u1ee3p s\u1ea3n xu\u1ea5t n\u00e0o m\u00e0 ch\u00fang thay th\u1ebf \u0111\u01b0\u1ee3c b\u00e0i ki\u1ec3m tra kh\u1eafc. N\u1ebfu c\u00f3 ai \u0111\u00f3 t\u00ecm th\u1ea5y, ch\u00fang t\u00f4i mu\u1ed1n xem d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u00f3 \u0111i s\u00e2u bao nhi\u00eau trong Germanium, ZnSe v\u00e0 Sapphire?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang t\u00f4i kh\u00f4ng c\u00f4ng b\u1ed1 c\u00e1c con s\u1ed1 \u0111\u1ed9 s\u00e2u tuy\u1ec7t \u0111\u1ed1i, v\u00ec m\u1ed9t l\u00fd do \u0111\u01b0\u1ee3c n\u00eau trong ph\u1ea7n ti\u1ebfp theo. \u0110i\u1ec1u \u0111\u00e1ng tin c\u1eady l\u00e0 th\u1ee9 t\u1ef1 \u2014 c\u00e1ch c\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn x\u1ebfp h\u1ea1ng v\u1edbi nhau d\u01b0\u1edbi c\u00f9ng m\u1ed9t v\u1ebft c\u1eaft:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>Material<\/th><th>H\u00e0nh vi g\u00e3y v\u1ee1<\/th><th>\u0110\u1ed9 s\u00e2u h\u01b0 h\u1ecfng t\u01b0\u01a1ng \u0111\u1ed1i<\/th><th>\u0110i\u1ec1u g\u00ec th\u1ef1c s\u1ef1 g\u00e2y h\u1ea1i cho b\u1ea1n<\/th><\/tr><\/thead><tbody><tr><td>Th\u1ee7y tinh quang h\u1ecdc (BK7 v\u00e0 t\u01b0\u01a1ng t\u1ef1)<\/td><td>\u0110\u1ed3ng nh\u1ea5t \u0111\u1eb3ng h\u01b0\u1edbng, d\u1ec5 ch\u1ecbu nh\u1ea5t<\/td><td>Th\u1ea5p nh\u1ea5t<\/td><td>D\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c; \u0111\u01b0\u1eddng c\u01a1 s\u1edf d\u1ec5 d\u00e0ng<\/td><\/tr><tr><td>Fused silica<\/td><td>\u0110\u1ed3ng nh\u1ea5t \u0111\u1eb3ng h\u01b0\u1edbng, c\u1ee9ng h\u01a1n<\/td><td>Th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/td><td>T\u1ea3i b\u00e1nh xe, tr\u00f4i nhi\u1ec7t<\/td><\/tr><tr><td>Germanium<\/td><td>T\u00e1ch theo c\u00e1c m\u1eb7t ph\u1eb3ng \u01b0u ti\u00ean<\/td><td>Trung b\u00ecnh \u0111\u1ebfn cao<\/td><td>C\u00e1c b\u01b0\u1edbc t\u00e1ch thay v\u00ec n\u1ee9t ng\u1eabu nhi\u00ean<\/td><\/tr><tr><td>ZnSe \/ ZnS<\/td><td>M\u1ec1m, dai th\u1ea5p, \u0111a tinh th\u1ec3<\/td><td>Cao<\/td><td>K\u00e9o h\u1ea1t v\u00e0 v\u00eanh c\u1ea1nh, kh\u00f4ng ch\u1ec9 n\u1ee9t<\/td><\/tr><tr><td>ng\u1ecdc b\u00edch<\/td><td>C\u1ee9ng nh\u1ea5t, d\u1ecb h\u01b0\u1edbng m\u1ea1nh<\/td><td>Ph\u1ee5 thu\u1ed9c v\u00e0o h\u01b0\u1edbng<\/td><td>C\u00f9ng m\u1ed9t v\u1ebft c\u1eaft, k\u1ebft qu\u1ea3 kh\u00e1c nhau tr\u00ean c\u00e1c m\u1eb7t ph\u1eb3ng C, A v\u00e0 R<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Kho\u1ea3ng dung sai b\u1ea1n c\u1ea7n tu\u00e2n theo th\u1ee9 t\u1ef1 \u0111\u00f3, v\u00e0 kerf l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam: d\u00e2y v\u00f2ng v\u00f4 t\u1eadn m\u1ecfng nh\u1ea5t ch\u00fang t\u00f4i cung c\u1ea5p l\u00e0 0,35 mm v\u00e0 kerf t\u1ea1o ra kho\u1ea3ng 0,4 mm, v\u00ec v\u1eady v\u1eadt li\u1ec7u ti\u00eau th\u1ee5 cho m\u1ed7i l\u00e1t c\u1eaft l\u00e0 \u0111\u1ed9 d\u00e0y m\u1ee5c ti\u00eau c\u1ed9ng v\u1edbi kho\u1ea3ng 0,4 mm tr\u01b0\u1edbc b\u1ea5t k\u1ef3 dung sai h\u01b0 h\u1ecfng n\u00e0o. To\u00e0n b\u1ed9 t\u00ednh to\u00e1n n\u1eb1m trong ghi ch\u00fa c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/www.opticalcutting.com\/vi\/kerf-loss-optical-cutting\/\">t\u1ed5n th\u1ea5t r\u00e3nh c\u1eaft trong c\u1eaft quang h\u1ecdc<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lo\u1ea1i b\u1ecf n\u00f3: Thang \u0111o h\u1ea1t m\u00e0i<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>M\u1ed7i giai \u0111o\u1ea1n ph\u1ea3i lo\u1ea1i b\u1ecf nhi\u1ec1u v\u1eadt li\u1ec7u h\u01a1n \u0111\u1ed9 s\u00e2u h\u01b0 h\u1ecfng c\u00f2n l\u1ea1i t\u1eeb giai \u0111o\u1ea1n tr\u01b0\u1edbc \u0111\u00f3.<\/strong> Vi ph\u1ea1m quy t\u1eafc \u0111\u00f3 \u1edf b\u1ea5t k\u1ef3 \u0111\u00e2u trong chu\u1ed7i v\u00e0 h\u01b0 h\u1ecfng s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf \u2014 n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c mang theo, l\u00e0m m\u1ecfng \u0111i v\u00e0 l\u1ed9 ra \u1edf b\u01b0\u1edbc \u0111\u00e1nh b\u00f3ng cu\u1ed1i c\u00f9ng, khi b\u1ed9 ph\u1eadn c\u00f3 gi\u00e1 tr\u1ecb nh\u1ea5t.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u00e0i th\u00f4 ph\u1ea3i x\u1eed l\u00fd c\u00e1c v\u1ebft c\u01b0a <em>V\u00e0<\/em> l\u1edbp n\u1ee9t b\u00ean d\u01b0\u1edbi ch\u00fang, s\u00e2u h\u01a1n c\u00e1c v\u1ebft nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. Sau \u0111\u00f3, m\u00e0i tinh lo\u1ea1i b\u1ecf h\u01b0 h\u1ecfng do m\u00e0i th\u00f4, v\u00e0 \u0111\u00e1nh b\u00f3ng ch\u1ec9 ph\u1ea3i x\u1eed l\u00fd nh\u1eefng g\u00ec m\u00e0i tinh \u0111\u1ec3 l\u1ea1i. \u0110\u00e1nh b\u00f3ng l\u00e0 c\u00f4ng c\u1ee5 sai \u0111\u1ec3 lo\u1ea1i b\u1ecf h\u01b0 h\u1ecfng \u2014 t\u1ed1c \u0111\u1ed9 lo\u1ea1i b\u1ecf qu\u00e1 th\u1ea5p, v\u00e0 \u0111\u1ebfn khi b\u1ea1n \u0111\u00e1nh b\u00f3ng \u0111\u1ee7 s\u00e2u \u0111\u1ec3 lo\u1ea1i b\u1ecf v\u1ebft n\u1ee9t do m\u00e0i th\u00f4, b\u1ea1n \u0111\u00e3 ph\u00e1 h\u1ee7y h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y c\u0169ng l\u00e0 l\u00fd do t\u1ea1i sao m\u1ee5c ti\u00eau ho\u00e0n thi\u1ec7n v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 c\u1eaft l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh, kh\u00f4ng ph\u1ea3i hai. Th\u1ea3o lu\u1eadn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c <a href=\"https:\/\/www.opticalcutting.com\/vi\/do-nham-be-mat-thau-kinh-germanium-ra-5nm\/\">b\u1ec1 m\u1eb7t th\u1ea5u k\u00ednh germanium<\/a> b\u1eaft \u0111\u1ea7u t\u1eeb c\u00f9ng m\u1ed9t ti\u1ec1n \u0111\u1ec1. Ki\u1ec3m so\u00e1t <strong>subsurface damage optical lens<\/strong> c\u00e1c khuy\u1ebft t\u1eadt l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1eaft v\u00e0 m\u00e0i m\u00e0 t\u00ecnh c\u1edd \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n t\u1ea1i b\u00e0n \u0111\u00e1nh b\u00f3ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ghi ch\u00fa v\u1ec1 c\u00e1c con s\u1ed1 b\u1ea1n s\u1ebd th\u1ea5y \u0111\u01b0\u1ee3c tr\u00edch d\u1eabn \u1edf n\u01a1i kh\u00e1c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ed9 s\u00e2u SSD tuy\u1ec7t \u0111\u1ed1i \u0111\u01b0\u1ee3c l\u01b0u h\u00e0nh r\u1ed9ng r\u00e3i trong ti\u1ebfp th\u1ecb thi\u1ebft b\u1ecb, th\u01b0\u1eddng kh\u00f4ng c\u00f3 ph\u01b0\u01a1ng ph\u00e1p \u0111o, k\u00edch th\u01b0\u1edbc m\u1eabu ho\u1eb7c c\u1ea5p v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c n\u00eau r\u00f5. Ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ecdn kh\u00f4ng l\u1eb7p l\u1ea1i ch\u00fang. \u0110\u1ed9 s\u00e2u h\u01b0 h\u1ecfng ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ecfi c\u1ee5 th\u1ec3, t\u00ecnh tr\u1ea1ng d\u00e2y, t\u1ed1c \u0111\u1ed9 n\u1ea1p v\u00e0 v\u1eadt c\u1ed1 \u0111\u1ecbnh \u2014 m\u1ed9t gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c \u0111o tr\u00ean germanium c\u1ee7a ng\u01b0\u1eddi kh\u00e1c cho b\u1ea1n bi\u1ebft r\u1ea5t \u00edt v\u1ec1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00e0o \u0111\u00f3, ch\u00fang t\u00f4i l\u00e0m g\u00ec: g\u1eedi v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n cho ch\u00fang t\u00f4i v\u00e0 ch\u00fang t\u00f4i s\u1ebd c\u1eaft n\u00f3. Th\u1eed nghi\u1ec7m mi\u1ec5n ph\u00ed tr\u00ean ph\u1ea1m vi c\u1eaft v\u00e0 m\u00e0i, v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c tr\u1ea3 l\u1ea1i c\u00f9ng v\u1edbi b\u1ea3ng quy tr\u00ecnh ch\u00fang t\u00f4i \u0111\u00e3 s\u1eed d\u1ee5ng, v\u00e0 \u0111\u00e1nh gi\u00e1 h\u01b0 h\u1ecfng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a b\u1ea1n thay v\u00ec tr\u00ean t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o. \u0110\u00f3 l\u00e0 c\u00e1ch duy nh\u1ea5t trung th\u1ef1c \u0111\u1ec3 \u0111\u01b0a ra m\u1ed9t con s\u1ed1 v\u1ec1 <strong>subsurface damage optical lens<\/strong> c\u00f4ng vi\u1ec7c cho m\u1ed9t nhi\u1ec7m v\u1ee5 c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Effects on Optical Performance<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Light scattering<\/strong> t\u1eeb l\u1edbp b\u1ecb h\u01b0 h\u1ecfng l\u00e0m gi\u1ea3m h\u00e0m s\u1ed1 truy\u1ec1n \u0111i\u1ec1u ch\u1ebf (MTF).<\/li>\n\n\n\n<li><strong>Mechanical strength<\/strong> gi\u1ea3m, l\u00e0m t\u0103ng r\u1ee7i ro h\u1ecfng h\u00f3c \u1edf c\u00e1c c\u1eeda s\u1ed5 v\u00e0 v\u00f2m m\u1ecfng.<\/li>\n\n\n\n<li><strong>Excessive polishing<\/strong> l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c khuy\u1ebft t\u1eadt \u1ea9n, l\u00e0m t\u0103ng chi ph\u00ed v\u00e0 \u0111e d\u1ecda h\u00ecnh d\u1ea1ng.<\/li>\n\n\n\n<li><strong>Long-term reliability<\/strong> b\u1ecb \u1ea3nh h\u01b0\u1edfng d\u01b0\u1edbi chu k\u1ef3 nhi\u1ec7t v\u00e0 t\u1ea3i c\u01a1 h\u1ecdc, khi c\u00e1c v\u1ebft n\u1ee9t b\u1ecb ch\u00f4n v\u00f9i lan r\u1ed9ng.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Mitigation Strategies<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To minimize <strong>subsurface damage optical lens<\/strong> c\u00e1c khuy\u1ebft t\u1eadt trong s\u1ea3n xu\u1ea5t:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u0110\u1eb7t t\u1ed1c \u0111\u1ed9 n\u1ea1p, t\u1ed1c \u0111\u1ed9 d\u00e2y v\u00e0 \u0111\u1ed9 c\u0103ng nh\u01b0 m\u1ed9t b\u1ed9<\/strong>, kh\u00f4ng ri\u00eang l\u1ebb. S\u1eed d\u1ee5ng b\u1ea3ng \u0111\u1ed9 c\u0103ng \u1edf tr\u00ean l\u00e0m \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u cho \u0111\u01b0\u1eddng k\u00ednh d\u00e2y \u0111ang s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>Theo d\u00f5i m\u1ee9c ti\u00eau th\u1ee5 d\u00e2y theo di\u1ec7n t\u00edch c\u1eaft<\/strong>, kh\u00f4ng theo ca. Thay th\u1ebf tr\u01b0\u1edbc khi th\u1eddi gian c\u1eaft b\u1ecb tr\u00f4i, kh\u00f4ng ph\u1ea3i sau \u0111\u00f3.<\/li>\n\n\n\n<li><strong>Ph\u00e2n giai \u0111o\u1ea1n lo\u1ea1i b\u1ecf.<\/strong> C\u1eaft th\u00f4, m\u00e0i th\u00f4, m\u00e0i tinh \u2014 m\u1ed7i giai \u0111o\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ee1 theo h\u01b0 h\u1ecfng c\u00f2n l\u1ea1i t\u1eeb giai \u0111o\u1ea1n tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n\n\n\n<li><strong>L\u00e0m ng\u1eadp v\u1ebft c\u1eaft.<\/strong> L\u1ed7i cung c\u1ea5p ch\u1ea5t l\u00e0m m\u00e1t g\u00e2y ra nhi\u1ec1u h\u01b0 h\u1ecfng nhi\u1ec7t h\u01a1n c\u00e1c th\u00f4ng s\u1ed1 kh\u1eafc nghi\u1ec7t.<\/li>\n\n\n\n<li><strong>X\u00e1c minh b\u1eb1ng ph\u00e1 h\u1ee7y tr\u00ean m\u1ed9t m\u1eabu.<\/strong> M\u1ed9t m\u1eabu \u0111\u01b0\u1ee3c kh\u1eafc cho m\u1ed7i v\u1eadt li\u1ec7u v\u00e0 b\u1ed9 th\u00f4ng s\u1ed1 c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n b\u1ea5t k\u1ef3 ph\u00e9p \u0111o b\u1ec1 m\u1eb7t n\u00e0o.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Dung sai khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t v\u00e0 c\u00e1ch ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi tr\u00ean b\u1ea3n v\u1ebd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong <a href=\"https:\/\/www.iso.org\/standard\/65444.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO 10110-7<\/a>, t\u00e0i li\u1ec7u tham kh\u1ea3o ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u00edch d\u1eabn trong \u0111\u1eb7c t\u1ea3 mua h\u00e0ng \u2014 l\u01b0u \u00fd r\u1eb1ng n\u00f3 chi ph\u1ed1i <em>b\u1ec1 m\u1eb7t<\/em> c\u00e1c khuy\u1ebft t\u1eadt, v\u00ec v\u1eady c\u00e1c y\u00eau c\u1ea7u d\u01b0\u1edbi b\u1ec1 m\u1eb7t v\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c n\u00eau ri\u00eang trong h\u1ee3p \u0111\u1ed3ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u01a1i \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng nh\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u01a1i <strong>subsurface damage optical lens<\/strong> ki\u1ec3m so\u00e1t quy\u1ebft \u0111\u1ecbnh n\u0103ng su\u1ea5t l\u00e0 nh\u1eefng ng\u00e0nh \u0111ang l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u1ee9ng, gi\u00f2n v\u00e0 \u0111\u1eaft ti\u1ec1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00ecnh \u1ea3nh h\u1ed3ng ngo\u1ea1i v\u00e0 quang h\u1ecdc nhi\u1ec7t b\u1eb1ng germanium, ZnSe v\u00e0 ZnS<\/li>\n\n\n\n<li>C\u1eeda s\u1ed5 v\u00e0 v\u00f2m qu\u1ed1c ph\u00f2ng v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/li>\n\n\n\n<li>C\u1eeda s\u1ed5 sapphire, \u0111\u1ebf v\u00e0 tinh th\u1ec3 \u0111\u1ed3ng h\u1ed3<\/li>\n\n\n\n<li>Th\u1ea5u k\u00ednh th\u1ea1ch anh v\u00e0 silica n\u00f3ng ch\u1ea3y cho \u1ee9ng d\u1ee5ng c\u00f4ng su\u1ea5t cao v\u00e0 tia c\u1ef1c t\u00edm<\/li>\n\n\n\n<li>Linh ki\u1ec7n quang h\u1ecdc cho ki\u1ec3m tra v\u00e0 \u0111o l\u01b0\u1eddng b\u00e1n d\u1eabn<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ebf t\u1ea1o quang h\u1ecdc \u2014 kh\u00f4ng ph\u1ea3i c\u00f4ng vi\u1ec7c ph\u00f2ng th\u00ed nghi\u1ec7m k\u00ednh thu\u1ed1c v\u00e0 kh\u00f4ng ph\u1ea3i k\u00ednh ki\u1ebfn tr\u00fac. V\u1eadt li\u1ec7u kh\u00e1c nhau, dung sai kh\u00e1c nhau, m\u00e1y m\u00f3c kh\u00e1c nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c b\u01b0\u1edbc ti\u1ebfp theo th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p ph\u1ea3i <strong>subsurface damage optical lens<\/strong> v\u1ea5n \u0111\u1ec1 v\u1ec1 n\u0103ng su\u1ea5t xu\u1ea5t x\u01b0\u1edfng xu\u1ea5t hi\u1ec7n \u1edf kh\u00e2u \u0111\u00e1nh b\u00f3ng, h\u00e3y xem x\u00e9t ng\u01b0\u1ee3c l\u1ea1i theo th\u1ee9 t\u1ef1 sau: kh\u1eafc m\u1ed9t m\u1eabu t\u1eeb l\u00f4 \u0111\u1ec3 x\u00e1c nh\u1eadn \u0111\u1ed9 s\u00e2u h\u01b0 h\u1ecfng, ki\u1ec3m tra t\u00ecnh tr\u1ea1ng d\u00e2y v\u00e0 khu v\u1ef1c c\u1eaft k\u1ec3 t\u1eeb l\u1ea7n thay \u0111\u1ed5i cu\u1ed1i c\u00f9ng, sau \u0111\u00f3 ki\u1ec3m tra xem m\u00e0i th\u00f4 c\u00f3 lo\u1ea1i b\u1ecf \u0111\u1ee7 v\u1eadt li\u1ec7u \u0111\u1ec3 kh\u1eafc ph\u1ee5c hay kh\u00f4ng. Theo kinh nghi\u1ec7m c\u1ee7a ch\u00fang t\u00f4i, c\u00e2u tr\u1ea3 l\u1eddi th\u01b0\u1eddng n\u1eb1m \u1edf hai b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean h\u01a1n l\u00e0 b\u01b0\u1edbc th\u1ee9 ba.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang ch\u1ec9 \u0111\u1ecbnh m\u1ed9t d\u00e2y chuy\u1ec1n m\u1edbi, h\u00e3y quy\u1ebft \u0111\u1ecbnh c\u00f9ng l\u00fac l\u01b0\u1ee3ng c\u1eaft v\u00e0 tr\u00ecnh t\u1ef1 m\u00e0i \u2014 ph\u1ea7n t\u1ed5ng quan c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/www.opticalcutting.com\/vi\/quy-trinh-che-tao-germanium-blank-sang-thau-kinh\/\">quy tr\u00ecnh ch\u1ebf t\u1ea1o germanium blank sang th\u1ea5u k\u00ednh<\/a> cho th\u1ea5y c\u00e1c giai \u0111o\u1ea1n li\u00ean k\u1ebft v\u1edbi nhau nh\u01b0 th\u1ebf n\u00e0o, v\u00e0 <a href=\"https:\/\/www.opticalcutting.com\/vi\/thiet-bi-san-xuat-quang-hoc-hong-ngoai\/\">thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t quang h\u1ecdc h\u1ed3ng ngo\u1ea1i<\/a> t\u1ed5ng quan bao g\u1ed3m c\u00e1c m\u00e1y cho t\u1eebng giai \u0111o\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What is subsurface damage in optical lens cutting?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1ebft n\u1ee9t si\u00eau nh\u1ecf v\u00e0 bi\u1ebfn d\u1ea1ng d\u1ebbo b\u00ean d\u01b0\u1edbi b\u1ec1 m\u1eb7t nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c, g\u00e2y ra b\u1edfi l\u1ef1c c\u1eaft, \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n g\u00e3y th\u1ea5p c\u1ee7a v\u1eadt li\u1ec7u quang h\u1ecdc. \u0110\u00e2y l\u00e0 \u0111\u1ed9 s\u00e2u v\u00e0o b\u00ean trong kh\u1ed1i, kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ebft c\u1ea5u b\u1ec1 m\u1eb7t, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao <strong>subsurface damage optical lens<\/strong> c\u00e1c khuy\u1ebft t\u1eadt v\u01b0\u1ee3t qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can subsurface damage be detected visually?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. N\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u00e1 h\u1ee7y \u2014 kh\u1eafc h\u00f3a h\u1ecdc sau \u0111\u00f3 soi k\u00ednh hi\u1ec3n vi l\u00e0 l\u1ef1a ch\u1ecdn th\u00f4ng th\u01b0\u1eddng, v\u1edbi \u0111\u00e1nh b\u00f3ng c\u00f4n ho\u1eb7c c\u1eaft ngang khi c\u1ea7n h\u1ed3 s\u01a1 \u0111\u1ed9 s\u00e2u. \u0110o l\u01b0\u1eddng b\u1ec1 m\u1eb7t quang h\u1ecdc nh\u01b0 giao thoa \u00e1nh s\u00e1ng tr\u1eafng ch\u1ec9 \u0111o b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ea3n th\u00e2n vi\u1ec7c \u0111\u00e1nh b\u00f3ng c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. T\u1ed1c \u0111\u1ed9 lo\u1ea1i b\u1ecf c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00e1nh b\u00f3ng qu\u00e1 th\u1ea5p \u0111\u1ec3 lo\u1ea1i b\u1ecf l\u1edbp h\u01b0 h\u1ecfng do c\u01b0a ho\u1eb7c m\u00e0i th\u00f4 g\u00e2y ra, v\u00e0 vi\u1ec7c c\u1ed1 g\u1eafng l\u00e0m nh\u01b0 v\u1eady s\u1ebd ph\u00e1 h\u1ee7y h\u00ecnh d\u1ea1ng. H\u01b0 h\u1ecfng ph\u1ea3i \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf b\u1eb1ng c\u00e1ch m\u00e0i; \u0111\u00e1nh b\u00f3ng ch\u1ec9 x\u1eed l\u00fd nh\u1eefng g\u00ec m\u00e0i \u0111\u1ec3 l\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f4i n\u00ean \u0111\u1ec3 l\u1ea1i bao nhi\u00eau v\u1eadt li\u1ec7u cho n\u00f3?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ee7 \u0111\u1ec3 m\u1ed7i giai \u0111o\u1ea1n lo\u1ea1i b\u1ecf nhi\u1ec1u h\u01a1n \u0111\u1ed9 s\u00e2u h\u01b0 h\u1ecfng c\u1ee7a giai \u0111o\u1ea1n tr\u01b0\u1edbc, c\u1ed9ng v\u1edbi l\u01b0\u1ee3ng c\u1eaft v\u00e0 b\u1ea5t k\u1ef3 \u0111\u1ed9 cong n\u00e0o do v\u1ebft c\u1eaft. V\u00ec \u0111\u1ed9 s\u00e2u ph\u1ee5 thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u v\u00e0 th\u00f4ng s\u1ed1 c\u1ee7a b\u1ea1n, c\u00e1ch ti\u1ebfp c\u1eadn kh\u1ea3 thi l\u00e0 c\u1eaft th\u1eed tr\u00ean v\u1eadt li\u1ec7u c\u1ee7a ri\u00eang b\u1ea1n thay v\u00ec m\u1ed9t gi\u00e1 tr\u1ecb b\u1ea3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How does subsurface damage affect lens performance?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 l\u00e0m t\u0103ng s\u1ef1 t\u00e1n x\u1ea1 v\u00e0 gi\u1ea3m MTF, gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, t\u0103ng chi ph\u00ed \u0111\u00e1nh b\u00f3ng v\u00e0 r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd khi s\u1eed d\u1ee5ng d\u01b0\u1edbi chu k\u1ef3 nhi\u1ec7t ho\u1eb7c c\u01a1 h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u n\u00f3 nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 ti\u1ebfn dao, t\u1ed1c \u0111\u1ed9 d\u00e2y v\u00e0 \u0111\u1ed9 c\u0103ng cho ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u; thay d\u00e2y theo khu v\u1ef1c c\u1eaft; ph\u00e2n giai \u0111o\u1ea1n lo\u1ea1i b\u1ecf \u0111\u1ec3 kh\u00f4ng c\u00f3 h\u01b0 h\u1ecfng n\u00e0o b\u1ecb mang sang giai \u0111o\u1ea1n ti\u1ebfp theo; gi\u1eef cho v\u1ebft c\u1eaft \u0111\u01b0\u1ee3c ng\u1eadp n\u01b0\u1edbc; v\u00e0 x\u00e1c minh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e1 h\u1ee7y tr\u00ean c\u00e1c m\u1eabu. Ki\u1ec3m so\u00e1t <strong>subsurface damage optical lens<\/strong> c\u00e1c khuy\u1ebft t\u1eadt l\u00e0 v\u1ea5n \u0111\u1ec1 k\u1ef7 lu\u1eadt quy tr\u00ecnh h\u01a1n l\u00e0 v\u1ea5n \u0111\u1ec1 thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<style>.oc-stage3-article-links{margin:34px 0 0;padding:22px 24px;background:#edf4f8;border-left:3px solid #086f9e;color:#183040;font:16px\/1.7 sans-serif}.oc-stage3-article-links h2{font-size:22px;line-height:1.3;margin:0 0 10px;color:#183040}.oc-stage3-article-links ul{margin:0;padding-left:20px}.oc-stage3-article-links li{margin:5px 0}.oc-stage3-article-links a{color:#086f9e;text-decoration:underline;text-underline-offset:3px}<\/style><section class=\"oc-stage3-article-links\" aria-label=\"T\u00e0i li\u1ec7u \u0111\u1ecdc th\u00eam\"><h2>T\u00e0i li\u1ec7u \u0111\u1ecdc th\u00eam<\/h2><ul><li><a href=\"https:\/\/www.opticalcutting.com\/vi\/luong-du-cat-cho-mai\/\">C\u00e1ch t\u00ednh l\u01b0\u1ee3ng d\u01b0 c\u1eaft cho m\u00e0i<\/a><\/li><li><a href=\"https:\/\/www.opticalcutting.com\/vi\/loai-bo-vet-cua-day\/\">V\u1ebft c\u01b0a d\u00e2y: c\u1ea7n lo\u1ea1i b\u1ecf bao nhi\u00eau v\u1eadt li\u1ec7u m\u00e0i<\/a><\/li><\/ul><\/section>","protected":false},"excerpt":{"rendered":"<p>A lens blank can come off the saw looking perfect and still be scrap. The most expensive defect in precision optics is subsurface damage optical lens makers cannot see \u2014 a layer of micro-cracks sitting below the cut surface, invisible to the eye, to bright-light inspection and to any profilometer. It survives rough grinding. It [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4792","post","type-post","status-publish","format-standard","hentry","category-news-insights"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts\/4792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/comments?post=4792"}],"version-history":[{"count":2,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts\/4792\/revisions"}],"predecessor-version":[{"id":5693,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts\/4792\/revisions\/5693"}],"wp:attachment":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/media?parent=4792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/categories?post=4792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/tags?post=4792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}