Light guide sheet and movable contact unit and switch using the same
AssigneePanasonic Corporation
InventorTakefumi Inoue
Life of this patent
Estimating the term…
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.
Claims7
A light-guide-sheet comprising:
- a base film having grooves;
- and
- a light-guide-member formed in the grooves of the base-film comprising;
- an inlet,
- a generally strip-shaped light-guide path coupled with the inlet, and
- a light-emitter coupled with the light-guide path, each having an index of refraction different from that of the base-film.
Dependencies are inferred from the claim text.