Lighting fixture with a concave reflector, such as a tail, warning or signal light etc.

Claim 2

Lighting fixture comprising an enclosure, means disposed in said enclosure, for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said concave reflector, said concave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said means for supplying said central source of light comprising a luminous body, and including a collecting lens disposed in front of said luminous body and an optical system in front of said collecting lens for scatterling light in only two opposing directions in said horizontal plane.

Claim 3

Lighting fixture according to claim 1 wherein said light-scattering optical system comprises a concave cylindrical lens.

Claim 4

Lighting fixture according to claim 2 wherein said enclosure has a cover plate, and said concave cylindrical lens is an integral part of said cover plate.

Claim 5

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said sonsave reflector, said concave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said concave reflector having a base at one end thereof and a light outlet at the other end thereof, said light penetrable region being in the form of a slot extending from a region close to said base to said light outlet, said means for supplying a central light source comprising a luminous body, and including an optical collecting system disposed in a light path extending from said luminous body and through said slot, said optical collecting system comprising a cylindrical collecting lens disposed in said horizontal plane, said cylindrical collecting lens being disposed in said horizontal plane at one side of said optical axis, and another cylindrical collecting lens being disposed in said horizontal plane at an opposite side of said optical axis from said first-mentioned cylindrical collecting lens, both of said cylindrical collecting lenses being elongated and mutually joined in front of said luminous body into one continuous lens member extending over areas which are at best only slightly irradiated by said main light beam.

Claim 6

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said sonsave reflector, said concave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said concave reflector having a base at one end thereof and a light outlet at the other end thereof, said light penetrable region being in the form of a slot extending from a region close to said base to said light outlet, said means for supplying a central light source comprising a luminous body, and including an optical collecting system disposed in a light path extending from said luminous body and through said slot, said optical collecting system comprising a cylindrical collecting lens disposed in said horizontal plane, said cylindrical collecting lens being disposed in said horizontal plane at one side of said optical axis, and another cylindrical collecting lens being disposed in said horizontal plane at an opposite side of said optical axis from said first-mentioned cylindrical collecting lens, both of said cylindrical collecting lenses being elongated and mutually joined in front of said luminous body into one continuous lens member extending over areas which are at best only slightly irradiated by said main light beam.

Claim 7

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said concave reflector, said concave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said light penetrable region comprising at least one aperture formed in said concave reflector, said aperture being formed as a slot in said concave reflector on only one side of said optical axis in said horizontal plane, and including a spherical reflector extending over an annular region and disposed between said central light source and said concave reflector on the other side of said optical axis and opposite said slot whereby part of the light radiated directly from said light center and impinging on said spherical reflector is, in turn radiated therefrom through said slot.

Claim 8

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said concave reflector, said concave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said light penetrable region comprising at least one aperture formed in said concave reflector, said aperture being formed as a slot in said concave reflector on only one side of said optical axis in said horizontal plane, and including a spherical reflector extending over an annular region and disposed between said central light source and said concave reflector on the other side of said optical axis and opposite said slot whereby part of the light radiated directly from said light center and impinging on said spherical reflector is, in turn radiated therefrom through said slot.

Claim 9

Lighting fixture according to claim 5 wherein said spherical reflector is of multistep construction.

Claim 10

Lighting fixture according to claim 5 wherein said aperture is formed as a slot in said concave reflector on only one side of said optical axis in said horizontal plane, and including a spherical reflector extending over an annular region and disposed between said central light source and said concave reflector on the other side of said optical axis and opposite said slot whereby part of the light radiated directly from said light center and impinging on said spherical reflector is, in turn radiated therefrom through said slot, said spherical reflector being disposed in a region of said concave reflector.

Claim 11

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said concave reflector, said soncave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said light penetrable region comprising at least one aperture formed in said concave reflector, and a second lighting fixture combined therewith into a structural unit, said second lighting fixture having a concave reflector located at least nearly beyond the concave reflector of the first-mentioned lighting fixture, said second lighting fixture having an optical axis disposed at an angle of between 2° to 6° to the optical axis of said first-mentioned lighting fixture, said optical axis of said first-mentioned lighting fixture, in installed condition of the lighting fixture assembly, being disposed in said horizontal plane, both of said lighting fixtures having respective incandescent lamps as said means for supplying a light source, the incandescent lamp of said first-mentioned lighting fixture having a smaller current drain than that of said second lighting fixture and serving as a position light, the incandescent lamp of said second lighting fixture having said optical axis thereof declining from said horizontal plane in said installed condition of the lighting fixture assembly and serving for illumination.

Claim 12

Lighting fixture comprising an enclosure, means disposed in said enclosure for supplying a central source of light therein, concave, generally parabolic reflector for directing a main beam of light out of said enclosure from said source generally along a given optical axis, said central source of light being located at the focal region of said concave reflector, said soncave reflector having a light penetrable region thereof disposed at least at one side of said optical axis in a horizontal plane in common with said central light source, said light penetrable region forming an escape window out of said enclosure for part of the light from said source, said light penetrable region comprising at least one aperture formed in said concave reflector, and a second lighting fixture combined therewith into a structural unit, said second lighting fixture having a concave reflector located at least nearly beyond the concave reflector of the first-mentioned lighting fixture, said second lighting fixture having an optical axis disposed at an angle of between 2° to 6° to the optical axis of said first-mentioned lighting fixture, said optical axis of said first-mentioned lighting fixture, in installed condition of the lighting fixture assembly, being disposed in said horizontal plane, both of said lighting fixtures having respective incandescent lamps as said means for supplying a light source, the incandescent lamp of said first-mentioned lighting fixture having a smaller current drain than that of said second lighting fixture and serving as a position light, the incandescent lamp of said second lighting fixture having said optical axis thereof declining from said horizontal plane in said installed condition of the lighting fixture assembly and serving for illumination.

Claim 13

Lighting fixture assembly according to claim 8 including a common housing for both of said lighting fixtures, and a spirit level mounted on said common housing.

Claim 14

Lighting fixture assembly according to claim 8 including means connectible to a battery for energizing said first-mentioned lighting fixture with battery current, and means selectively connectible to a battery and to a mechanical generator for energizing said second lighting fixture.

Claim 15

Lighting fixture with a concave reflector having a main beam outlet and an additional lateral light outlet aperture on one side of the optical axis thereof so that light rays directly emanating from a luminous body are partly collected by the concave reflector into a main light beam reflected through the main beam outlet aperture, the lateral light outlet aperture being disposed nearly outside a horizontal plane in common with the light center of the luminous body comprising light-conducting means disposed in the light path through the lateral light outlet aperture for deflecting in substantially horizontal directions at least part of the light rays passing laterally out of the concave reflector, said substantially horizontal directions being substantially perpendicular to the axis of the concave reflector, the lateral light outlet aperture extending from one side of a horizontal plane extending through the luminous body to the opposite side thereof, the lateral light outlet aperture extending over an angle smaller than 180° perpendicularly to the axis of the concave reflector, the lateral light outlet aperture, at least on one side of the concave reflector extending from a region located in vicinity of a horizontal plane extending through the luminous body over a first angular zone of more than 20°, and said light-conductive means disposed in the light path through the lateral light outlet aperture serve not only for deflecting the light rays in substantially horizontal direction but also for collecting the light rays in a second angular zone, said second angular zone having a smaller aperture angle than that of said first angular zone.

Claim 16

Lighting fixture with a concave reflector having a main beam outlet and an additional lateral light outlet aperture on one side of the optical axis thereof so that light rays directly emanating from a luminous body are partly collected by the concave reflector into a main light beam reflected through the main beam outlet aperture, the lateral light outlet aperture being disposed nearly outside a horizontal plane in common with the light center of the luminous body comprising light-conducting means disposed in the light path through the lateral light outlet aperture for deflecting in substantially horizontal directions at least part of the light rays passing laterally out of the concave reflector, said substantially horizontal directions being substantially perpendicular to the axis of the concave reflector, the lateral light outlet aperture extending from one side of a horizontal plane extending through the luminous body to the opposite side thereof, the lateral light outlet aperture extending over an angle smaller than 180° perpendicularly to the axis of the concave reflector, the lateral light outlet aperture, at least on one side of the concave reflector extending from a region located in vicinity of a horizontal plane extending through the luminous body over a first angular zone of more than 20°, and said light-conductive means disposed in the light path through the lateral light outlet aperture serve not only for deflecting the light rays in substantially horizontal direction but also for collecting the light rays in a second angular zone, said second angular zone having a smaller aperture angle than that of said first angular zone.