Infrared Germanium Crystal

               


              Product introduction
              GRINM Electro-Optic  Materials Co., Ltd.,subsidiary company (GRIEOM) of GRINM (General Research Institute for Nonferrous Metals) has the production capability of infrared Germanium Crystal with the largest scale and the highest technical level in domestic market, holding about 15-20% market share in the world, and one of the world's top four manufacturers. GRIEOM produces high quality Germanium Crystal with theoretical transmittance and homogeneity of refractive index. Blanks, windows, lenses and prisms could be supplied according to customer’s specification, with the diameter up to 300 mm for monocrystal and 380 mm for polycrystal. These products are used as windows, lens, prisms, etc. for the infrared detections and imaging systems.
              Specification and parameter
                 Material description
              Processing parameter
              Purity
              > 99.9999%
              Diameter
              ∮5-∮300mm(single crystal)/380mm(polycrystalline)
              Crystal structure
              single crystal & polycrystalline
              Plainness
              20μm
              Conductive type
              N-type
              Vertical degree
              Crystal orientation
              <111>
              Chamfering
              0.2 ~ 1mm
              Resistivity (provide germanium with lower resistivity according to the customer needs)
              5-40 Ohm-cm
              Broken edge
              ≤0.5mm
              ETV
              ≤0.05mm
              Tolerance
              diameter:+/- 0.025mm
              length and width:+/- 0.05 ~ +/-0.1mm
              thickness:+/- 0.025mm
              Surface quality
              Plain slice: slice
              spherical surface:D25 ~ D76
              polishing window: according to customers' needs

               
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              Tel: (+ 86) 10-82241935
              E-mail: hm@grinm.com
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