Light width controller and image projector employing the same

Details Light width controller and image projector employing the same Light width controller and image projector employing the same

1996-02-07

1997-10-07

Dowling, William

Optics: image projectors

Reflector

G03B 2114

Patent

active

056739869

ABSTRACT:
A light width controller is disclosed including a light width controlling mirror of a refractive index n2, the mirror having: a first surface of an angle a1 with respect to horizontal; a second surface of a different angle a2 with respect to horizontal; and a reflection layer for reflecting light incident on the second surface. The first and second surfaces are not parallel. Light that has passed through a medium of a refractive index of n1 smaller than n2 and then has passed through the first surface is incident upon, and then reflected from, the second surface. Also, an image projector utilizing such a light width controller is disclosed.

REFERENCES:
patent: 2552184 (1951-05-01), Koch
patent: 3877802 (1975-04-01), Greenspan
patent: 4759616 (1988-07-01), Marchant
patent: 5095389 (1992-03-01), Yokomori
patent: 5233466 (1993-08-01), Maeda et al.
patent: 5521658 (1996-05-01), Donohoe

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