Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-07-05
2011-07-05
Qi, Mike (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S061000, C349S067000, C349S068000, C362S247000, C359S599000
Reexamination Certificate
active
07973878
ABSTRACT:
An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display, without introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range, maximizing the display's luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure.
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Dolby Laboratories Licensing Corporation
Qi Mike
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