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US 2004/0062024 A1Published application
Polarization conversion system
AssigneeIntel Corporation
InventorsMichael O'Connor, Clark A. Pentico
Life of this patent
Estimating the term…
Abstract
A reflector, light source, phase retarder, and linear polarizer configured to increase a single-polarization output beam by converting wrong-polarization light into correct-polarization light. The linear polarizer reflects the wrong-polarization light and transmits the correct-polarization light. The phase retarder converts the wrong-polarization light into correct-polarization light, which is then transmitted by the linear polarizer.
Claims36
An apparatus comprising:
- a reflector;
- a light source for producing light of a first polarization and light of a second polarization;
- a linear polarizer which substantially passes light of the first polarization and substantially reflects light of the second polarization;
- and
- a phase retarder disposed between the reflector and the linear polarizer.
2 more elements
An apparatus comprising:
- a curved reflector having a concave reflective surface;
- a quarter-wave phase retarder in an optical path with the curved reflective surface;
- and
- a linear polarizer in the optical path.
1 more element
A system comprising:
- linear polarizer means for transmitting light of a first polarization and for reflecting light of a second polarization;
- phase retarder means for altering polarization of the light of the second polarization reflected from the linear polarizer means;
- and
- reflector means for reflecting the altered polarization light from the phase retarder means back to the linear polarizer means.
1 more element
A method comprising:
- transmitting first correct-polarization light through a linear polarizer;
- reflecting wrong-polarization light from the linear polarizer;
- correcting polarization of the wrong-polarization light to make it second correct-polarization light;
- and
- transmitting the second correct-polarization light through the linear polarizer.
2 more elements
Dependencies are inferred from the claim text.