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US 8,708,534 B2Granted
Light-emitting device
AssigneeNakanishi Inc.
InventorsKiyoshi Kawakubo, Wataru Suzuki, Toshiyuki Sadohara
Life of this patent
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Abstract
The light-emitting device 1 has a translucent cover 10 having a cylindrical shape and a flat light-projecting surface 11 facing to the light-emitting part of an LED 20. The LED 20 is arranged in close proximity with the flat light-projecting surface 11 in the translucent cover 10 to achieve efficient introduction of light from the LED 20 into a light-receiving surface of optical fibers.
Claims6
A light-emitting device comprising:
- a translucent cover,
- a light-emitting diode (LED) enclosed in said translucent cover, and
- electrode means electrically connected to said LED,
- wherein said light-emitting device is in such a compact size as to be disposed in a dental handpiece,
- wherein said translucent cover has a generally cylindrical shape and a flat light-projecting surface facing to a light-emitting part of said LED,
- wherein said translucent cover has in its inner surface a dent sized to fit a single LED therein on the inside of the light-projecting surface, said LED being positioned in said dent.
3 more elements
Dependencies are inferred from the claim text.