Transmissive screen and rear projector

Details Transmissive screen and rear projector Transmissive screen and rear projector

2007-01-23

2007-01-23

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S453000, C359S455000, C359S459000, C359S460000

Reexamination Certificate

active

10647302

ABSTRACT:
The present invention provides an excellent transmissive screen allowing a well-balanced increase in the vertical, horizontal, and oblique viewing angle characteristics for enhancing the viewing angle characteristics, and a rear projector including the transmissive screen. A transmissive screen can include a Fresnel lens portion having Fresnel lens components on its light-exiting surface, and a microlens array portion disposed at the light-exiting surface side of the Fresnel lens portion and having many microlenses on its light-incident surface. The microlenses of the microlens array portion are arrayed vertically and horizontally such that adjacent microlenses have common sides and the microlens array portion is rotated by 45°.

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