APDS-9007-020 Datasheet, PDF (12/14 Pages) AVAGO TECHNOLOGIES LIMITED – Ambient Light Photo Sensor with Logarithmic Current Output

2.1 Optical Window Material
The material of the window is recommended to be poly-
carbonate. The surface finish of the plastic should be
smooth, without any texture.
The recommended plastic material for use as a window is
available from Bayer AG and Bayer Antwerp N. V. (Europe),
Bayer Corp.(USA) and Bayer Polymers Co., Ltd. (Thailand),
as shown in Table 2.
Table 2. Recommended Plastic Materials
Material number
Makrolon LQ2647
Makrolon LQ3147
Makrolon LQ3187
Visible light
transmission
87%
87%
85%
Refractive index
1.587
1.587
1.587
12