Illumination for projecting an image

Details Illumination for projecting an image Illumination for projecting an image

2011-03-04

2011-10-04

Epps, Georgia (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, C362S300000

Reexamination Certificate

active

08029149

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: 6773139 (2004-08-01), Sommers
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patent: 7798692 (2010-09-01), Krupa et al.
patent: 2003/0085281 (2003-05-01), Knowles et al.
patent: 2004/0246606 (2004-12-01), Benitez et al.
patent: 2007/0086205 (2007-04-01), Krupa et al.

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