Spatial light modulator and projector

Details Spatial light modulator and projector Spatial light modulator and projector

2006-04-18

2006-04-18

Mack, Ricky (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S619000

Reexamination Certificate

active

07031065

ABSTRACT:
Exemplary embodiments of the invention provide a spatial light modulator that is inexpensive, has a long life and a high light use efficiency, and with which can be obtained a high-contrast image, and a projector disposed with the spatial light modulator. Exemplary embodiments provide a spatial light modulator including a liquid crystal layer that includes plural aperture regions AP, modulates light in accordance with image signals and emits the modulated light; and microlens elements that are disposed at an incident side of the liquid crystal layer in correspondence to the aperture regions AP and condense the light made incident so that the light passes through the aperture regions AP. The microlens elements include plural focal positions f1and f2that are different per plural substantially annular portions R1and R2around an optical axis AX.

REFERENCES:
patent: 6583938 (2003-06-01), Woodgate et al.
patent: A 2003-215592 (2003-07-01), None

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