红外截止滤光片
It's fabricated by special blue glass (BG39 from Schott or equivalent). The glass will absorb IR wavelength and let visible light pass. It widely used for digital camera
Specifications
|
Item
|
Commercial
|
High Precision
|
|
Material:
|
BG39 from schott or equivalent
|
|
|
Dimension X×Y(φ):
|
1×1mm~25.4×25.4mm；φ3~φ25.4mm
|
|
|
Dimension tolerance:
|
±0.1mm
|
±0.03mm
|
|
Parallelism:
|
＜3′
|
＜30″
|
|
Clear aperture:
|
85%
|
|
|
Surface quality:
|
MIL20-10
|
|
|
Flatness(per 25.4mm):
|
λ/4@ 632.8nm
|
λ/８@ 632.8nm
|
|
Coating:
|
AR Coating Ravg<0.5%@visible wavelength is available
|
|