Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-12-06
2005-12-06
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S062000, C349S112000
Reexamination Certificate
active
06972813
ABSTRACT:
Lighting devices are disclosed that include optical laminated bodies. An exemplary optical laminated body includes a polarizing layer, a first transparent film disposed closely to a front surface of the polarizing layer and a second transparent film disposed closely to a back surface of the polarizing layer. The polarizing layer includes a reflective polarizing film, and both of the first transparent film and the second transparent film are diffusive films. The lighting devices further include a light source supplying light to the optical laminated body through a light entry surface of the first transparent film of the optical laminated body and a lens film disposed between the light source and the optical laminated body. The lighting device provides diffused-polarized light emitted from a light emitting surface of the second transparent film of the laminated body.
REFERENCES:
patent: 5587816 (1996-12-01), Gunjima et al.
patent: 6208466 (2001-03-01), Liu et al.
patent: 0 545 701 (1993-06-01), None
patent: 0 787 942 (1997-06-01), None
Chowdhury Tarifur R.
Kobilansky Anna A.
Nguyen Hoan Chau
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