Projection display apparatus with a curved screen

Details Projection display apparatus with a curved screen Projection display apparatus with a curved screen

2005-08-09

2005-08-09

Nguyen, Judy (Department: 2851)

Optics: image projectors

Plural

C348S744000, C359S451000, C359S456000, C359S457000, C359S743000

Reexamination Certificate

active

06926412

ABSTRACT:
A projection display apparatus with red (R), green (G), and blue (B) monochromatic cathode ray tubes (CRTs) and three projection lenses, disposed in front of the R, G, and B monochromatic CRTs respectively, along with a screen having a predetermined curvature concave in a view direction to control a view distance and focus the light rays projected from the respective projection lenses. The screen includes a Fresnel screen converting the light rays incident from the projection lenses to have predetermined optical directional characteristics in an optical axis direction, and a Lenticular screen, disposed in front of the Fresnel screen and having a curvature corresponding to the Fresnel screen, for forming images from the light rays passing through the Fresnel screen, controlling a view angle, and enhancing an entire screen luminance. The view distance is determined based on a focal length and a curvature radius of the Fresnel screen.

REFERENCES:
patent: 5200814 (1993-04-01), Hirata et al.
patent: 6347012 (2002-02-01), Monson et al.
patent: 6469830 (2002-10-01), Dubin et al.
patent: 6623120 (2003-09-01), Neff et al.
patent: 6639631 (2003-10-01), Hall et al.
patent: 6665118 (2003-12-01), Yamaguchi et al.
patent: 2003/0223113 (2003-12-01), Starkweather
patent: 2004/0090674 (2004-05-01), Takahashi

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