{"id":4331,"date":"2025-06-11T14:21:00","date_gmt":"2025-06-11T06:21:00","guid":{"rendered":"https:\/\/www.opticalcutting.com\/?p=4331"},"modified":"2025-07-21T17:30:35","modified_gmt":"2025-07-21T09:30:35","slug":"%ea%b2%8c%eb%a5%b4%eb%a7%88%eb%8a%84-%eb%a0%8c%ec%a6%88-%ec%a0%88%eb%8b%a8","status":"publish","type":"post","link":"https:\/\/www.opticalcutting.com\/ko\/%ea%b2%8c%eb%a5%b4%eb%a7%88%eb%8a%84-%eb%a0%8c%ec%a6%88-%ec%a0%88%eb%8b%a8\/","title":{"rendered":"\ub2e4\uc774\uc544\ubaac\ub4dc \uc640\uc774\uc5b4 \ud1b1\uc73c\ub85c \uac8c\ub974\ub9c8\ub284 \ub80c\uc988 \uc808\ub2e8"},"content":{"rendered":"\n

Germanium (Ge) is a high-value material widely used in infrared (IR) optics, night vision systems, thermal imaging, and scientific instruments. While germanium\u2019s excellent infrared transmission and mechanical properties make it ideal for lenses, its crystalline brittleness makes cutting and processing extremely challenging.<\/p>\n\n\n\n

This article explains how endless diamond wire saws enable precision cutting of germanium lenses while minimizing surface damage and maximizing material yield.<\/p>\n\n\n\n

\n\n\n\n

Material Characteristics of Germanium<\/strong><\/h2>\n\n\n\n
\"Vimfun
Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n
    \n
  • High refractive index (n \u2248 4.0 in IR)<\/strong><\/li>\n\n\n\n
  • Excellent infrared transmission (2\u201314 \u03bcm)<\/strong><\/li>\n\n\n\n
  • Relatively soft (Mohs ~6) but brittle<\/strong><\/li>\n\n\n\n
  • High density and low thermal conductivity<\/strong><\/li>\n<\/ul>\n\n\n\n

    These features create unique machining challenges:<\/p>\n\n\n\n

      \n
    • Edge chipping and microcracks are common with mechanical saws<\/li>\n\n\n\n
    • Heat generation can distort or damage lens surfaces<\/li>\n\n\n\n
    • Fine surface finish is critical to avoid post-polishing loss<\/li>\n<\/ul>\n\n\n\n

      Why Use Diamond Wire Saw for Germanium Lens Cutting?<\/strong><\/h2>\n\n\n\n

      The endless diamond wire saw offers key advantages:<\/p>\n\n\n\n

        \n
      • Minimal kerf loss<\/strong> (as low as 0.35 mm using 0.3 mm wire)<\/li>\n\n\n\n
      • Cold cutting<\/strong> process with no heat-affected zone<\/li>\n\n\n\n
      • Smooth surface finish<\/strong> with roughness <3 \u03bcm<\/li>\n\n\n\n
      • Highly controllable feed and wire speed<\/strong> to reduce stress<\/li>\n\n\n\n
      • Ideal for both raw blank slicing and complex contour cut<\/strong><\/li>\n<\/ul>\n\n\n\n

        Germanium Cutting Application Case <\/strong><\/h2>\n\n\n\n

        One of our customers needed to cut a special arc-shaped geometry from a single-crystal germanium block. After multiple rounds of testing, our SGI20<\/strong> model demonstrated exceptional cutting accuracy and contour control. The customer was highly satisfied with the results and proceeded to place three separate orders for multiple units to expand their precision optics production line.<\/p>\n\n\n\n

        \"Cutting
        Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n

        [Real case video Germanium Arc Cutting with SGI20 Diamond Wire Saw]<\/p>\n\n\n\n

        \n