Light reflection/diffraction device, light...

Details Light reflection/diffraction device, light... Light reflection/diffraction device, light...

2006-01-17

2006-01-17

Epps, Georgia (Department: 2873)

Optical: systems and elements

Diffraction

From grating

C359S291000, C348S203000

Reexamination Certificate

active

06987616

ABSTRACT:
A light reflection and diffraction element for enhancing the contrast of an image display device. In an off state of the element, a portion exhibiting a cyclic structure for diffracting incident light in a region where reflective members having reflection surfaces are aligned is reduced by preventing the generation of unrequired diffracted light. For example, by covering connection regions of the ribbon reflective members by light shielding masks, incident light is shielded. Preferably, any uneven state of the reflection surfaces of the ribbon reflective members is controlled, and a correlation length is made small.

REFERENCES:
patent: 2002/0001120 (2002-01-01), Mochizuki
patent: 2002/0015230 (2002-02-01), Pilossof et al.

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