Optical device for concentrating the light radiation emitted by

Details Optical device for concentrating the light radiation emitted by Optical device for concentrating the light radiation emitted by

1984-11-01

1987-10-27

Moore, David K.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Plural diverse optical devices

313499, 357 17, H01J 516, H01L 3112

Patent

active

047032197

ABSTRACT:
A device for optically coupling a light emitting diode and a radiation pickup such as an optical fiber. The light emitting diode element includes at least one emissive section within an active layer where a part of the light irradiation does not emerge from the diode element if it is emitted at an excessive angle of incidence. A lenticular element in the form of either a semi-cylindrical lens or a semi-toroidal lens is associated with the emissive section. In one form, the device includes a circular central lens and a plurality of semi-toroidal lens concentric with respect to the central lens and associated with annular emissive sections.

REFERENCES:
patent: 3812516 (1974-05-01), Hayashi
patent: 3816847 (1974-06-01), Nagao
patent: 3947840 (1976-03-01), Craford et al.
patent: 3954534 (1976-05-01), Scifres et al.
patent: 4165474 (1979-08-01), Myers
patent: 4367483 (1983-01-01), Takahashi et al.
patent: 4467193 (1984-08-01), Carroll
patent: 4599537 (1986-07-01), Yamashita

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