Imaging systems employing apparatus for evenly illuminating obje

Details Imaging systems employing apparatus for evenly illuminating obje Imaging systems employing apparatus for evenly illuminating obje

1986-10-09

1987-12-08

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350619, 362298, 362346, G03B 2754, H01J 316

Patent

active

047120029

ABSTRACT:
An imaging system employing an apparatus for evenly illuminating objects to be scanned. The apparatus includes first and second elliptical cylindrical sections which comprise an elliptical cylindrical mirror having first and second focal lines. A linear-type lamp is located at the first focal line and the scanning line of the imaging system is located at the second focal line. First and second planar mirrors are positioned in parallel relationship to each other at the top and bottom of the scanning line, and a non-reflecting surface on the second elliptical cylindrical section combines with the first elliptical section to provide an even distribution of light at the scanning line. The optical axis of the imaging system passes between the first and second elliptical cylindrical sections.

REFERENCES:
patent: 4473865 (1984-09-01), Landa
patent: 4506152 (1985-03-01), Gupta
patent: 4518249 (1985-05-01), Murata et al.

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