Lens substrate, a transmission screen and a rear projection...

Details Lens substrate, a transmission screen and a rear projection... Lens substrate, a transmission screen and a rear projection...

2007-09-04

2007-09-04

Spector, David N. (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S456000, C359S460000

Reexamination Certificate

active

11252315

ABSTRACT:
A lens substrate (microlens substrate1) having a first surface and a second surface opposite to the first surface is disclosed. Light is allowed to enter the lens substrate from the first surface thereof and then exit from the second surface thereof. The lens substrate includes: a plurality of convex lenses (microlenses21) formed on the first surface of the lens substrate from which the light is allowed to enter the lens substrate; and a colored portion22provided on the first surface of the lens substrate with the plurality of convex lenses. The colored portion22is constituted from a plurality of regions each having a different content by percentage of a coloring agent, and the plurality of regions are laminated in the thickness direction of the colored portion22.

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patent: 6865834 (2005-03-01), Oda et al.
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Communication from Korean Patent Office regarding corresponding Korean Patent Application No. 10-2005-0099053.

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