Optics: image projectors – Image moves on screen
Reexamination Certificate
2005-01-18
2005-01-18
Nguyen, Judy (Department: 2851)
Optics: image projectors
Image moves on screen
C353S050000, C353S051000, C353S122000, C359S197100, C359S203100, C359S212100, C359S223100, C359S226200
Reexamination Certificate
active
06843568
ABSTRACT:
The present invention is based on the finding that the previous column and row representation in the scanning image projection has to be given up, in order to enable that the ratio between row and column frequency or vertical and horizontal deflection frequency is not critical and may be decreased. An inventive projection apparatus for projecting an image on an image field includes a deflection means for deflecting a light beam about a first deflection axis at a first deflection frequency and about a second deflection axis at a second deflection frequency different from the first, in order to move the light beam across the image field, as well as a modulation means for modulating an intensity of the light beam depending on the image to be projected. The first and second deflection frequencies differ by less than an order of magnitude.
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Schenk Harald
Schwarzenberg Markus
Wolter Alexander
Cruz Magda
Fraunhofer-Gessellschaft
Maginot Moore & Beck
Nguyen Judy
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