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WINDOWS/FILTERS0 pages
optical windows / filters
Optical windows or filters are made of optically transparent materials with parallel polished sides, ground edges and chamfers. The only
difference between windows and filters is degree of attenuation of the optical spectrum.
The optical windows are usually intended to have maximum possible transmission for given material. In the case of filters the degree of
transmission is tailored through the use of specific filter material and/or through use of specific coatings. The AR coatings are often applied
on the polished sides of both optical windows and filters to improve their transmission characteristics. Windows are often used as protective
elements. However, they may have additional filter or beamsplitter function. We can produce custom windows/filters on request.
WEBCODE:
D171-xxx
DRAWING
SPECIFICATIONS
SYMBOL
VALUE
Type
flat window
Material
Window : BK7, fused silica, sapphire, ...
Filter : Schott RG type, NG type, ...
Central Thickness
CT
0.1 to 100 mm
Height
H
1 to 250 mm
Length
L
1 to 250 mm
Diameter
Φ
1 to 250 mm
Paralellism
1 arc sec
Dimension tolerance
+/- 0.1 mm
Flatness
λ/4
NOTE
All specifications are customized upon request
p. 1/1
WINDOWS – FILTERS (12/07)
www.doriclenses.com
418.877.5600
