Multi-input optical switch

Details Multi-input optical switch Multi-input optical switch

2007-11-06

2007-11-06

Wood, Kevin S. (Department: 2874)

Optical waveguides

Optical waveguide sensor

C385S013000, C385S016000, C385S147000

Reexamination Certificate

active

11565064

ABSTRACT:
A multi-input optical switch can include a base plate that carries at least one photo sensor and multiple LEDs which are arranged at positions separated by approximately the same angular interval. A first mask can be formed in an approximately cylindrical shape and can include multiple through holes. A second mask can be formed as an approximately flat light blocking plate, and can include a translucent area. A translucent light guiding body can include an approximately flat plate portion, a protruded portion which extends downward from a center portion of the plate portion, a rod portion which extends upward from the center portion of the plate portion, a first total reflection surface and a second total reflection surface. A third mask can be provided with a tubular cup shape that diverges downward, and has an opening at a bottom end, a step portion at an intermediate position thereof, and at least one through hole on an upper cylindrical wall above the step portion. A rod portion of the light guiding body can be operated to freely tilt, rotate, and move up and down.

REFERENCES:
patent: 5903000 (1999-05-01), Juniman
patent: 6297896 (2001-10-01), Kikuchi et al.
patent: 5055433 (1993-03-01), None

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