Solar protective filter

Details Solar protective filter Solar protective filter

G - Physics

02

C

88/121, 88/42.4

G02C 7/10 (2006.01) A61F 9/02 (2006.01) G02B 5/20 (2006.01)

Patent

CA 1328181

Abstract of the Disclosure A solar protective filter of improved contrast sensitivity has a spectral transmission T.lambda. which is less than 1% for wavelengths of the incident radiation in the range .lambda. <350 nm and less than 20% in the range 350< .lambda. <400 nm and reaches a value of 5 to 30% in the range 400< .lambda. <500 nm and thereafter increases linearly with the wavelength to its maximum value starting from the value for T500. This course is achieved by coating or dying the filter material. In this connection. it is advantageous to configure the component which is coated or dyed such that the spectral transmission T.lambda. again rapidly reaches a value <1% outside of the visible spectral range. that is for values .lambda. >780 nm.

608797

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