Light source for image reading apparatus and image reading...

Details Light source for image reading apparatus and image reading... Light source for image reading apparatus and image reading...

2005-05-10

2005-05-10

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S500000, C313S504000, C313S505000, C313S511000, C313S512000, C399S004000, C399S220000

Reexamination Certificate

active

06891328

ABSTRACT:
A light source using electroluminescence layers of which width and thickness are adjusted so that emission luminance does not depend on the position on the layer. Also, a light source using red, green and blue electroluminescences light media for a color source of which the width and thickness are so adjusted that the required emission luminance can be obtained from electroluminescences for the respective colors. In light sources using electroluminescence not adjusted in width and thickness as light medium, emission luminance is different from position to position, especially in the direction along the longitudinal direction.

REFERENCES:
patent: 5483120 (1996-01-01), Murakami
patent: 6366025 (2002-04-01), Yamada
patent: 6396218 (2002-05-01), Proctor
patent: 6541130 (2003-04-01), Fukuda
patent: 6617785 (2003-09-01), Shibata et al.
patent: 6624569 (2003-09-01), Pennaz et al.
patent: 6624570 (2003-09-01), Sano et al.
patent: 05315073 (1993-11-01), None
patent: 2036620060 (2000-08-01), None
patent: 2036620061 (2000-08-01), None

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