Illumination device

Details Illumination device Illumination device

1995-07-06

1998-08-11

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

385901, 385115, 385121, 362 32, G02B 604

Patent

active

057939110

ABSTRACT:
An illumination device 1 and methods for producing said device and parts thereof for backlighting a liquid crystal display 3 wherein the illumination device comprises a solid substrate 5 containing at least one groove 11 and an optical fiber 7 comprising an inner core 23 and an outer cladding layer 25 fitted into the groove(s) 11. The outer cladding layer 25 is of reduced thickness on the exposed side of the core 23 such that, light supplied along the optical fiber 7 from a light source 9, is transversely emitted from the optical fiber through the reduced thickness layer 14.

REFERENCES:
patent: 4280125 (1981-07-01), Kazan
patent: 5018007 (1991-05-01), Lang
patent: 5042892 (1991-08-01), Chiu et al.
patent: 5222795 (1993-06-01), Hed
patent: 5301090 (1994-04-01), Hed

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