Datasheet

12
2.1 Optical Window Material
The material of the window is recommended to be poly-
carbonate. The surface nish 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
Visible light
transmission Refractive index
Makrolon LQ2647 87% 1.587
Makrolon LQ3147 87% 1.587
Makrolon LQ3187 85% 1.587