Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2005-02-22
2005-02-22
Nguyen, Judy (Department: 2851)
Optics: image projectors
Polarizer or interference filter
C353S030000, C353S032000, C353S034000, C353S038000, C353S082000, C353S121000, C359S506000, C359S506000
Reexamination Certificate
active
06857745
ABSTRACT:
A first positioning step positions and fixes a light focusing element and a polarization converting element. A beam introducing step introduces beams to a beam splitting element, the light focusing element and the polarization converting element. An optical image forming step detects an optical image through the above elements. An illumination-area comparing step performs an image processing on the detected optical image to compare an illumination area formed by the optical image with a designed illumination area. A beam-splitting-element position-adjusting step adjusts the position of the beam splitting element.
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Kitabayashi Masashi
Maruyama Masaki
Miyajima Naoyuki
Cruz Magda
Nguyen Judy
Seiko Epson Corporation
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