Light emitting element, image sensor and light receiving element

Details Light emitting element, image sensor and light receiving element Light emitting element, image sensor and light receiving element

1990-08-08

1992-06-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25022720, H01J 4014

Patent

active

051245434

ABSTRACT:
An optical device includes a substrate, an optical waveguide provided on a surface of the substrate, and an electroluminescence element including a first electrode layer, a first insulator layer, a light emitting layer for emitting light, a second insulator layer and a second electrode layer which are successively stacked. The light emitted from the light emitting layer is emitted from an end surface of the optical waveguide. The optical waveguide has a refractive index which increases from an outer periphery to a center portion of a cross section which is approximately parallel to the end surface, and the electroluminescence element is provided within the optical waveguide.

REFERENCES:
patent: 4120560 (1978-10-01), Baues et al.
patent: 4196964 (1980-04-01), Papuchon
patent: 4759595 (1988-07-01), Boord et al.
SID 86 Digest, pp. 270-272, Z.K. Kun, et al., "TFEL Edge Emitter Array for Optical Image Bar Applications".

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