Light guide sheet and movable contact unit and switch using...

Details Light guide sheet and movable contact unit and switch using... Light guide sheet and movable contact unit and switch using...

2007-12-17

2009-11-17

Lee, Kyung (Department: 2833)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S314000, C345S168000, C400S490000

Reexamination Certificate

active

07619173

ABSTRACT:
The disclosed relates to a light-guide-sheet used in operation panel of a various electronic equipment, and a movable-contact-unit and a switch using the same, which have a simplified structure free from uneven illumination and a cheap cost price. Therefore, the light-guide-sheet is provided with the light-guide-member including an inlet, a generally strip-shaped guide-path coupled with the inlet, and generally circularly and irregularly shaped light-emitters coupled with the guide-path, each formed from a polymer having an index of refraction different from that of base-film and formed in grooves provided on a base-film.

REFERENCES:
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patent: 5661279 (1997-08-01), Kenmochi
patent: 5664667 (1997-09-01), Kenmochi
patent: 5871088 (1999-02-01), Tanabe
patent: 6595653 (2003-07-01), Saito et al.
patent: 7015408 (2006-03-01), Hirahata et al.
patent: 7070349 (2006-07-01), Dombrowski et al.
patent: 1 722 385 (2006-11-01), None
patent: 2006-318905 (2006-11-01), None
patent: WO 01/23805 (2001-04-01), None
Supplementary European Search Report issued in European Patent Application No. 07124083.2-2214, dated Jul. 1, 2008.

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