Optical waveguides – Illuminating or display apparatus
Reexamination Certificate
2005-03-08
2005-03-08
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
Illuminating or display apparatus
C385S007000, C381S172000
Reexamination Certificate
active
06865335
ABSTRACT:
A lightwaveguide panel to be used with a a mobile telephone (MT) or personal digital assistant (PDA), the pannel comprises a first portion for lighting an LCD and/or a keyboard, and a second integral portion, said second portion including a first inclined surface for directing light from a source of light onto a light-reflecting acoustically responsive membrane, and a second inclined surface for directing light from said membrane onto a photo-detector.
REFERENCES:
patent: 4924085 (1990-05-01), Kato et al.
patent: 0866312 (1998-09-01), None
patent: 1191812 (2002-03-01), None
patent: WO 2087278 (2002-10-01), None
Kots Alexander
Paritsky Alexander
G.E. Ehrlich Ltd.
Phone-Or Ltd.
Rojas Omar
Ullah Akm Enayet
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