Wire grid polarizer with dual absorptive regions
AssigneeMoxtek, Inc.
InventorsR. Stewart Nielson, Bradley R. Williams, Benjamin Downard, D. Brent Willamson
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Abstract
A selectively-absorptive wire grid polarizer comprising an array of parallel, elongated rods disposed over a surface of a transparent substrate with gaps between adjacent rods, each of the rods including a reflective wire sandwiched between two absorptive ribs. A method of making this wire grid polarizer. A use of this wire grid polarizer in an image projection system.
Claims20
An image projection system comprising:
- a) an incoming wire grid polarizer disposed between a light source and a liquid crystal display (LCD);
- b) the incoming wire grid polarizer including an array of parallel, elongated rods disposed over a surface of a transparent substrate with gaps between adjacent rods, each of the rods including a reflective wire sandwiched between two absorptive ribs;
- c) the incoming wire grid polarizer disposed in a location to receive light from the light source and capable of substantially transmitting one polarization and substantially absorbing an opposite polarization of the light from the light source;
- and
- d) the incoming wire grid polarizer disposed in a location to receive reflected light from the LCD and capable of substantially absorbing the reflected light from the LCD.
A selectively-absorptive wire grid polarizer comprising an array of parallel, elongated rods disposed over a surface of a transparent substrate with gaps between adjacent rods, each of the rods including a reflective wire sandwiched between two absorptive ribs.
A selectively-absorptive wire grid polarizer comprising an array of parallel, elongated rods disposed over a surface of a transparent substrate with gaps between adjacent rods;
- each of the rods including a reflective wire sandwiched between two absorptive ribs;
- and the wires having a thickness of between 140-220 nanometers, the ribs have a thickness of between 10-30 nanometers, or both.
Dependencies are inferred from the claim text.