Lighting structure for intensely illuminating narrow linear region
AssigneeTIR Systems Ltd.
InventorsAllan Brent York, Grant William Roland Harlow, George Everett Matheson
Life of this patent
Estimating the term…
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.
Claims10
A lighting structure for intensely illuminating a narrow linear region, said structure comprising:
- (a) a hollow, elongate light guide having a longitudinal axis;
- (b) a light source for emitting light into an end of said light guide;
- (c) a longitudinal slit light-emitting aperture extending through an external wall of said light guide substantially parallel to said axis;
- and,
- (d) a lens mounted in said slit aperture, said lens bearing a plurality of prisms extending substantially perpendicular to said slit on an inwardly directed face of said lens.
A lighting structure for intensely illuminating a narrow linear region, said structure comprising:
- (a) a hollow, elongate light guide having a longitudinal axis;
- (b) a light source for emitting light into an end of said light guide;
- (c) a longitudinal slit light-emitting aperture extending through an external wall of said light guide substantially parallel to said axis;
- (d) a lens mounted in said slit aperture, said lens bearing a plurality of prisms extending substantially perpendicular to said slit on an inwardly directed face of said lens, said lens being a film material;
- and
- (e) a mechanism for maintaining said lens flat.
A lighting structure for intensely illuminating a narrow linear region, said structure comprising:
- (a) a hollow, elongate light guide having a longitudinal axis;
- (b) a light source for emitting light into an end of said light guide;
- (c) a longitudinal slit light-emitting aperture extending through an external wall of said light guide substantially parallel to said axis;
- (d) a lens mounted in said slit aperture, said lens bearing a plurality of prisms extending substantially perpendicular to said slit on an inwardly directed face of said lens;
- and
- (e) a diffuser mounted outwardly of said lens, said diffuser bearing a plurality of thin striations extending transversely relative to said longitudinal slit aperture.
Dependencies are inferred from the claim text.