Lighting structure for intensely illuminating narrow linear regi

Details Lighting structure for intensely illuminating narrow linear regi Lighting structure for intensely illuminating narrow linear regi

1994-12-21

1997-09-23

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 33, 385133, 385901, 362 32, G02B 634

Patent

active

056713061

ABSTRACT:
A lighting structure for intensely illuminating a narrow linear region. A light source emits light into an end of a hollow, elongate light guide. A longitudinal slit light-emitting aperture extends through an external wall of the light guide. A lens is mounted in the aperture. The lens bears a plurality of prisms which extend substantially perpendicular to the slit, on an inwardly directed face of the lens. The lens may be formed of a film material. A mechanism is provided to maintain the lens flat. A diffuser mounted outwardly of the lens bears a plurality of thin striations extending transversely, relative to the longitudinal slit aperture.

REFERENCES:
patent: 4615579 (1986-10-01), Whitehead
patent: 5339382 (1994-08-01), Whitehead

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