Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2007-05-23
2011-10-04
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Polarizer or interference filter
C353S038000, C353S097000, C359S279000, C359S489160, C359S489060, C372S105000, C348S752000, C356S365000
Reexamination Certificate
active
08029141
ABSTRACT:
The image display apparatus includes a two-dimensional light modulation device for modulating light emitted from a laser light source, a display surface for displaying the modulated light, an optical pixel aperture enlarging member for distributing the luminance of the laser light while introducing the laser light to apertures of pixels of the modulation device; and a display pixel aperture enlarging portion for optically enlarging the modulated light by the apertures of the pixels of the modulation device corresponding to pixels of an image to be displayed. The luminance of a partial area of each pixel of the image displayed on the display surface is controlled to be below the threefold of an average value of the luminance in the area of the entire pixel by the optical pixel aperture enlarging member and the display pixel aperture enlarging portion, accomplishing speckle noise reduction and improved light utilization efficiency.
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Itoh Tatsuo
Kasazumi Ken'ichi
Mizushima Tetsuro
Yamamoto Kazuhisa
Cruz Magda
Epps Georgia Y
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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