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US 10,962,696 B2Granted
Coatable grey polarizer
AssigneeLight Polymers Holding
InventorsEvgeny Morozov, Chih-Hao Huang, Valeriy Kuzmin
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Abstract
A linear polarizer may be formed a blue dichroic dye compound, having a maximum dichroic ratio Kd≤12 in an entire visible wavelength range, and a red dichroic dye compound, having a maximum dichroic ratio Kd≤16 in the entire visible wavelength range. The linear polarizer has a dichroic ratio Kd≥18 and a thickness of less than or equal to 2 micrometers. The linear polarizer may form an achromatic polarizer.
Claims20
A linear polarizer, comprising:
- a blue dichroic dye compound, having its maximum visible light absorption in a wavelength range 600 nm-700 nm and a maximum dichroic ratio Kd≤12 in an entire visible wavelength range;
- and
- a red dichroic dye compound, having its maximum visible light absorption in a wavelength range 430 nm-520 nm and a maximum dichroic ratio Kd≤16 in the entire visible wavelength range;
- wherein the linear polarizer has a dichroic ratio Kd≥18 at 550 nm, and a thickness of the linear polarizer is less than or equal to 2 micrometers.
1 more element
Dependencies are inferred from the claim text.