Illumination for projecting an image

Details Illumination for projecting an image Illumination for projecting an image

2011-03-08

2011-03-08

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Miscellaneous

C353S030000, C353S031000, C353S119000, C362S294000, C362S373000, C362S235000, C362S236000, C362S244000, C362S249020, C362S237000, C362S238000, C362S239000, C362S240000, C362S241000, C362S242000, C362S243000, C362S245000, C362S246000, C362S247000, C362S248000, C362S268000, C362S299000, C356S600000, C356S601000, C356S602000, C356S603000, C356S604000, C356S605000, C356S607000, C356S608000, C356S609000, C356S610000, C356S611000, C356S612000, C356S613000, C356S237100, C356S237200, C356S237300, C356S239100, C356S

Reexamination Certificate

active

07901096

ABSTRACT:
The invention is directed to a method for illuminating an object and projecting its image on a ground glass screen. Optical comparators conventionally use incandescent illumination, either mercury arc or halogen. The use of an array of high intensity LED devices, provides many options for packaging the required optical components used in comparators.

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patent: 2007/0086205 (2007-04-01), Krupa et al.
patent: 2008/0024794 (2008-01-01), Miyazaki et al.

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