Light-supplying optical device

Details Light-supplying optical device Light-supplying optical device

1997-02-18

1998-12-01

Willis, Davis L.

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359850, 359852, 359853, 359872, 359869, 359626, 359631, 359633, G02B 508, G02B 510, G02B 7182, G02B 2710

Patent

active

058447300

ABSTRACT:
The line bow phenomenon is reduced by appropriately setting the reflective surface and/or the external shape of an optical element (e.g., a toric mirror) thereby realizing approximately linear illumination of the surface of the original document that is being read. In order to do this, optical elements can be formed so that the external shape of the reflective surface of the optical element is bow-shaped. Alternatively, the optical element can be arranged so that the optical axis of the reflective surface is parallel to the axis of the light reflected from the reflective surface.

REFERENCES:
patent: 590798 (1897-02-01), Kohayakawa
patent: 4989125 (1991-01-01), Cobb, Jr. et al.
patent: 5191406 (1993-03-01), Brandestini et al.
patent: 5214536 (1993-05-01), Prakash
patent: 5222025 (1993-06-01), Taylor, II
patent: 5255116 (1993-10-01), Araki et al.
patent: 5285320 (1994-02-01), Hohberg

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