Integrating point source for texture projecting bulb
A texture projecting light bulb includes an extended light source located within an integrator. The integrator includes at least one aperture configured to allow light to travel out of the interior of the integrator. In various embodiments, the interior of the integrator may be a diffusely reflective surface and the integrator may be configured to produce a uniform light distribution at the aperture to approximate a point source. The integrator may be surrounded by a light bulb enclosure. In various embodiments, the light bulb enclosure may include transparent and opaque regions configured to project a structured pattern of visible and/or infrared light.
1. A light bulb comprising:
a light source;
an integrator surrounding the light source, the integrator comprising an interior surface and at least one aperture; and
an enclosure surrounding the integrator, wherein at least a portion of the enclosure is translucent;
wherein the integrator is disposed within an interior of the enclosure such that the at least one aperture is spaced from the enclosure, and
wherein the light bulb is configured to project a structured light pattern.
2. The light bulb of claim 1 , wherein the light source is configured to produce both infrared light and visible light.
3. The light bulb of claim 1 , wherein the light source includes a first light source that produces infrared light and a second light source that produces visible light.
4. The light bulb of claim 1 , wherein the integrator comprises an integrating sphere.
5. The light bulb of claim 4 , wherein the integrating sphere has a sphere multiplier of 5 or more.
6. The light bulb of claim 1 , wherein the interior surface of the integrator comprises a specularly reflective material or is coated with a specularly reflective coating.
7. The light bulb of claim 1 , wherein the interior surface of the integrator comprises a diffusive material or is coated with a diffusive coating.
8. The light bulb of claim 1 , wherein the enclosure comprises a spherical portion, and wherein the at least one aperture is disposed at a geometric center of the spherical portion of the enclosure.
9. The light bulb of claim 1 , further comprising at least one baffle disposed within the integrator.
10. The light bulb of claim 1 , further comprising a pattern generating element.
11. The light bulb of claim 10 , wherein the pattern generating element comprises at least a portion of the enclosure that is non-transmissive to infrared light.
12. The light bulb of claim 11 , wherein the at least a portion of the enclosure that is non-transmissive to infrared light comprises a hot mirror transmissive to visible light and reflective to infrared light.
13. The light bulb of claim 11 , wherein the at least a portion of the enclosure that is non-transmissive to infrared light comprises a material capable of absorbing infrared light.
14. The light bulb of claim 10 , wherein the pattern generating element comprises a structure disposed adjacent to an interior surface of the enclosure.
15. The light bulb of claim 10 , wherein the pattern generating element comprises a structure disposed within and spaced from the enclosure.
16. The light bulb of claim 1 , wherein the light source is configured to produce infrared light, the light bulb further comprising a second light source configured to produce visible light, the second light source being disposed outside the integrator.
17. The light bulb of claim 1 , further comprising a base portion coupled to the enclosure and configured to be mechanically and electrically connected to a light bulb socket.
18. The light bulb of claim 17 , wherein the at least one aperture is disposed on a side of the integrator opposite the base portion.
19. The light bulb of claim 17 , wherein the enclosure is a flood light-type enclosure, and wherein the integrator is disposed adjacent to the base portion.
20. The light bulb of claim 1 , wherein the at least one aperture comprises a first aperture and a second aperture disposed on an opposite side of the integrator from the first aperture.
21. The light bulb of claim 1 , further comprising a second light source and a second integrator, the second integrator disposed within the enclosure and surrounding the second light source.