Claims
- 1. A light transformer for directing part of the light emitted by a light source in a limited angle omnidirectional pattern with precalculated intensity distribution while the remaining emitted light is dispersed across a hemisphere comprising:
a truncated hollow conical reflector having a truncated end facing the light source and a cone base opposite the truncated end, wherein a conical reflector axis is coincident with a light source axis, and light passes through an opening on the truncated end; a curved reflective surface between the truncated end and the cone base, wherein the surface reflects light from the light source in the limited angle omnidirectional pattern with precalculated intensity distribution; and an optical element adjacent the cone base in a plane perpendicular to the conical reflector axis, wherein the optical element disperses the light passing through the truncated hollow cone reflector.
- 2. A light transformer according to claim 1, wherein the light source is a LED.
- 3. A light transformer according to claim 1, wherein the curved reflective surface includes a plurality of curved circular facets.
- 4. A light transformer according to claim 3, wherein each of the facets reflects light from different angles into the same limited angle omnidirectional pattern with precalculated intensity distribution as a superposition of rays reflected from different facets.
- 5. A light transformer according to claim 1, wherein the curved reflective surface includes a plurality of plain circular facets and each of the facets reflects light from different angles into the same limited angle omnidirectional pattern.
- 6. A light transformer according to claim 1, wherein the optical element is a light shaping diffuser.
- 7. A light transformer according to claim 6, wherein the light shaping diffuser is a holographic diffuser.
- 8. A luminaire comprising:
a light source; a light transformer including
a truncated hollow conical reflector having a truncated end facing the light source and a cone base opposite the truncated end, wherein a conical reflector axis is coincident with a light source axis, and light passes through an opening on the truncated end; a curved reflective surface between the truncated end and the cone base, wherein the surface reflects light from the light source in a limited angle omnidirectional pattern with precalculated intensity distribution, and wherein the curved reflective surface includes a plurality of curved circular facets, each of the facets reflecting light from different angles into the same limited angle omnidirectional pattern with precalculated intensity distribution as a superposition of rays reflected from different facets; an optical element adjacent the cone base in a plane perpendicular to the conical reflector axis, wherein the optical element disperses the light passing through the truncated hollow cone reflector; a hemispherical optical window, wherein the light transformer is seated within the window and the optical window transmits light to the exterior of the luminaire; a circuit connecting the light source to an outside power source; and a base housing the power source, the hemispherical optical window and the circuit.
- 9. A luminaire according to claim 8, wherein the light source is a LED.
- 10. A luminaire according to claim 8, wherein the base houses the power source, the hemispherical optical window and the circuit in a weatherproofed sealed arrangement.
- 11. A luminaire according to claim 8, further comprising an adapter for installation located opposite hemispherical optical window.
- 12. A luminaire according to claim 8, wherein the circuit is an electric or an electronic circuit.
- 13. A luminaire according to claim 12, wherein the circuit operates and interfaces with existing airport lighting infrastructures including intensity variation by constant current regulator compliance standard regulations.
- 14. A luminaire according to claim 8, wherein the optical element is a light shaping diffuser.
- 15. A luminaire according to claim 13, wherein the light shaping diffuser is a holographic diffuser.
- 16. A luminaire according to claim 15, further comprising an autonomous power source including a rechargeable battery.
- 17. A light emitting apparatus comprising:
a light source; a light transformer including
a truncated hollow conical reflector having a truncated end facing the light source and a cone base opposite the truncated end, wherein a conical reflector axis is coincident with a light source axis, and light passes through an opening on the truncated end; a curved reflective surface between the truncated end and the cone base, wherein the surface reflects light from the light source in a limited angle omnidirectional pattern with precalculated intensity distribution; an optical element adjacent the cone base in a plane perpendicular to the conical reflector axis, wherein the optical element disperses the light passing through the truncated hollow cone reflector; a hemispherical optical window, wherein the light transformer is seated within the window and the optical window transmits light to the exterior of the light emitting apparatus; a circuit connecting the light source to an outside power source; and a base housing the power source, the hemispherical optical window and the circuit.
- 18. A light emitting apparatus according to claim 17, wherein the curved reflective surface includes a plurality of curved circular facets, each of the facets reflecting light from different angles into the same limited angle omnidirectional pattern with precalculated intensity distribution as a superposition of rays reflected from different facets.
- 19. A light emitting apparatus according to claim 17, wherein the light source is a single LED.
- 20. A light emitting apparatus according to claim 17, further comprising an adapter for installation located opposite hemispherical optical window.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part application of U.S. Provisional Serial No. 60/373,026 filed Apr. 16, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
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60373026 |
Apr 2002 |
US |