Optical reception device of remote controller having improved op

Details Optical reception device of remote controller having improved op Optical reception device of remote controller having improved op

1995-02-28

1996-10-15

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022718, 385124, H01J 516

Patent

active

055656730

ABSTRACT:
An optical reception device of a remote controller includes an optical transfer guide and an optical sensor. A refractive index of the optical transfer guide is varied along a predetermined direction so that an optical signal incident to the optical transfer guide vertically reaches the optical sensor while being refracted along the longitudinal axis of the optical transfer guide. The optical reception device improves the optical reception efficiency of the optical sensor, and can be used in a remote controller for various electronic products.

REFERENCES:
patent: 3823997 (1974-07-01), Gloge et al.
patent: 3923486 (1975-12-01), Kitano et al.
patent: 4856859 (1989-08-01), Imoto
patent: 5018811 (1991-05-01), Haavisto et al.

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