LIGHT EMITTING DEVICE, ILLUMINATION DEVICE, AND PHOTO SENSOR
First Claim
Patent Images
1. A light emitting device, comprising:
- a semiconductor laser element for emitting laser light, which is coherent laser light;
an optical conversion member for converting the coherent laser light which is emitted from the semiconductor laser element into incoherent light, and for emitting the incoherent light; and
a safety device for preventing the coherent laser light from exiting to an outside of the light emitting device.
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Accused Products
Abstract
Provided is a light emitting device improved in safety to an eye. The light emitting device includes: a semiconductor laser element for emitting laser light; an optical conversion member for converting coherent laser light which is emitted from the semiconductor laser element into incoherent light, and for emitting the incoherent light; and a safety device for preventing the coherent laser light from exiting to an outside.
60 Citations
22 Claims
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1. A light emitting device, comprising:
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a semiconductor laser element for emitting laser light, which is coherent laser light; an optical conversion member for converting the coherent laser light which is emitted from the semiconductor laser element into incoherent light, and for emitting the incoherent light; and a safety device for preventing the coherent laser light from exiting to an outside of the light emitting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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- 19. A photo sensor for use in a safety device of a light emitting device that comprises an optical conversion member for converting coherent laser light emitted from a semiconductor laser element into incoherent light, and for emitting the incoherent light, wherein the photo sensor detects intensity of at least one of the incoherent light and the coherent laser light exiting to an outside of the light emitting device.
Specification