Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1995-01-24
1996-11-26
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
200314, G01V 904
Patent
active
055788165
ABSTRACT:
A display push switch has a switch housing having an open upper end and an open lower end. A key top member made of substantially transparent material is disposed within the open upper end of the switch housing. The key top member is operable by an operator to be pushed into the switch housing. An image transmission member is disposed within the switch housing. A lower end surface of the image transmission member confronts a surface structure of a display device through the open lower end of the switch housing. An upper end surface confronts the key top member and is spaced from the switch housing to permit a stroke movement of the key top member when the key top member is pushed by the operator. The image transmission member includes a plurality of image transmission elements each having a longitudinal axis in a vertical direction. The image transmission elements are arranged in juxtaposed relationship with each other.
REFERENCES:
patent: 4551717 (1985-11-01), Dreher
patent: 4855740 (1989-08-01), Muramatsu et al.
patent: 4897651 (1990-01-01), DeMonte
patent: 5362961 (1994-11-01), Hamanaka
Le Que T.
Tietech Corporation
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