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SKU MG-4F97FB

Optical Glass Coated Infrared Ge Germanium Lens

Optical Glass Coated Infrared Ge Germanium Lens — an optical lens: Germanium, HC. Specs, RFQ checklist and custom sizes to drawing.

GermaniumMaterial
Flat LensType
WindowShape
>95%Transmittance
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Optical Glass Coated Infrared Ge Germanium Lens

Product type: Flat Lens. Application: Thermal Image. Model: SFY745.

Overview

Optical Glass Coated Infrared Ge Germanium Lens is an optical lens made from Germanium. Listed geometry: window shape. Optical / electrical data: transmittance >95%. Coating: HC; surface quality 60-40; flatness 1/4 Lambda. Typical applications: Thermal Image. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

Specifications

Material Germanium
Type Flat Lens
Shape Window
Transmittance >95%
Coating HC
Surface Quality 60-40
Flatness 1/4 Lambda
Usage Thermal Image
Model NO. SFY745
Tolerance +/-0.05mm
Supplier Changchun Sunday Optics Co., Ltd.

Technical data

Transmission Wavelength 2000nm-12000nm
Electrical resistivity 5-40 Ω.cm 1-5Ω.cm >50Ω.cm
Wavelength(nm) Refractive index(n) Wavelength(nm) Refractive index(n)
2200 4.0879 8000 4.0057
3000 4.0451 9000 4.0040
3800 4.0267 10600 4.0028
5000 4.0160 11000 4.0025
6000 4.0107 12000 4.0021
7000 4.0079 13000 4.0018
Diameter 2-450mm
Diameter Tol. +/-0.1
Surface Quality 60-40 standard
Flatness 1/4 lambda
Chamfer 0.25mmx45degree
Focal Length Tol. +/-1%
Coating 2-14um

What to specify when you request a quote

  • Material — listed as “Germanium”; name the glass or crystal.
  • Geometry — give diameter, focal length or radii, angles and tolerances.
  • Surface figure — listed as “60-40”; quote surface figure (λ) and scratch-dig.
  • Centring and edges — state centration and edge chamfer.
  • Coating — listed as “HC”; list the band and reflectance or transmission target.

Engineering guides for this part

For material grades and coating options, see Selecting Fused Silica and Quartz Glass for Precision Components. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read Boost Yield with Fused Silica Viewports for Vacuum and Optical Systems. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.

FAQ

What is the Optical Glass Coated Infrared Ge Germanium Lens made of? expand_more
It is listed as Germanium. Coating: HC. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.
What optical or electrical performance does it have? expand_more
Listed values: transmittance >95%. Confirm the values at your operating wavelength, angle and temperature when you request a quote.
Where is this optical lens used? expand_more
Listed applications: Thermal Image.
What should I include in a quote request? expand_more
Include material, geometry, surface figure, centring and edges and coating, plus quantity and a drawing if the part is custom.

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Optical Glass Coated Infrared Ge Germanium Lens

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