China Infrared Germanium Window 25.4*1 Germanium Windows Optical Lens

Germanium windows used as transparent barriers for sending and receiving light between two phases under varying conditions in temperature, pressure, chemical composition, cleanliness, and phase.

Germanium transmits in the IR range, from 1.8µm to 23µm,at which Germanium offers higher internal transmittance. Moreover, IR transmitting materials are generally much more expensive than their visible light counterparts so it is very important to select the right material for each specific application.

Non-coated and AR coated products are available.

Standard Specifications:

Optical Material:
Diameter Tolerance:
Thickness Tolerance:
Clear Aperture:
Parallelism:
Surface Quality:
Wavefront Distortion:
Bevel:
Coating:

Optical Grade Germanium
+0.0, -0.1mm
± 0.2mm
>90%
<3 are minutes
see the able
see the table
<0.25mm X 45°
available upon request

Standard Ge Windows

Dia(mm)

Thickness(mm)

Wavefront Distortion

Surface Quality

Product Number

10.0

2.0

Lambda/4

40-20

ICC-WNGH0101

12.7

2.0

Lambda/4

40-20

ICC-WNGH0102

18.0

2.0

Lambda/4

40-20

ICC-WNGH0103

25.4

3.0

Lambda/4

40-20

ICC-WNGH0104

38.10

3.0

Lambda/2

40-20

ICC-WNGH0105