Installation Instructions

18 SABIC Innovative Plastics
Physical Properties
Light Transmission
The sunlight which reaches the surface of the earth
has a wavelength that ranges between 295 – 2140
nanometres (10E-9 metres). This optical window is
divided into the following sections:
UV-B Middle ultraviolet region 280 – 315 nm
UV-A Near ultraviolet region 315 – 380 nm
Visible light region 380 – 780 nm
Near infra-red region 780 – 1400 nm
Middle infra-red region 1400 – 3000 nm
As shown in g. 5, Lexan Thermoclear sheet has
the highest transmission in the visible light.
Despite transmitting visible light very well, Lexan
Thermoclear sheet is almost opaque to radiation in
the UV and far infra-red region. This useful shielding
property can prevent discolouration of sensitive
materials such as fabrics or other organic materials
placed under or behind Lexan Thermoclear sheet
glazing in, for example, a factory warehouse,
museum or shopping centre.
5. Light Transmission
Spectrum of Lexan
Thermoclear sheet
0
250 300 350 400 500 600 700 800 1000 1400 1800 2200 2600 3000
20
40
60
80
100
UV Visible IR
Wavelength (nanometers)
Transmission %
5