Aperture Width (X) vs Module Depth
25
20
15
10
5
Xmax
Xmin
0
0
1
2
3
4
5
6
7
8
9
Module Depth (z) mm
Aperture Height(Y) vs Module Depth
16
14
12
10
8
6
4
Ymax
Ymin
2
0
0
1
2
3
4
5
6
7
8
9
Module Depth (z) mm
Window Material
The recommended plastic
materials for use as a cosmetic
window are available from
General Electric Plastics.
Almost any plastic material
will work as a window
material. Polycarbonate is
recommended. The surface
finish of the plastic should be
smooth, without any texture.
An IR filter dye may be used
in the window to make it look
black to the eye, but the total
optical loss of the window
should be 10% or less for best
optical performance. Light loss
should be measured at 875
nm.
Recommended Plastic Materials:
Material #
Lexan 141
Light Transmission
Haze
1%
Refractive Index
1.586
88%
85%
85%
Lexan 920A
Lexan 940A
1%
1.586
1%
1.586
Note: 920A and 940A are more flame retardant than 141.
Recommended Dye: Violet #21051 (IR transmissant above 625 nm)
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
