Germanium window

Material: K9, Bk7, GJS1, GJS2,GJS3, B270

Diameter:3mm-200mm±0.05mm

Center Thickness Tolerance:±0.05mm

Lens Alignment Error:≤3min

Surface Accuracy: λ/4@ 633nm or λ/10@633nm

Surface Quality:40/20. 60/40. 80/60

Effective Caliber: 90

Central Wavelength: 350nm-2500nm

Peak Transmittance: ＞90%Or customized according to customer requirements

Half peak bandwidth: 10nm-15nm

N-BK7 Wedge prism Selection Guide
Coating name	wavelength band
Uncoated	Uncoated
A Coating	350nm-700nm
AB Coating	400nm-1100nm
B Coating	650nm-1050nm
C Coating	1050-1700nm
D Coating	1650nm-3000nm

Custom Germanium window

Hengpu optics business unit has a wide breadth of manufacturing capabilities that allow us to offer a variety of custom Germanium window for both OEM sales and low quantity one-off orders. Germanium window with customer-defined sizes, focal lengths, substrate materials, cement materials, and coatings are all available as customs. In addition, we can offer optics that exceed the specifications of our stock catalog offerings. To receive more information or inquire about a custom order, please contact Tech Support : tom@hp-lens.com