DEVICE AND METHOD FOR REDUCING ETENDUE IN A DIODE LASER
First Claim
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1. An apparatus for reducing etendue of a laser light source having a plurality of emitters grouped into a first group of emitters and a second group of emitters, said apparatus comprising:
- a first optical device for collimating light emitted from the plurality of emitters;
a second optical device for reducing a spatial separation between light from the first group of emitters and light from the second group of emitters; and
a third optical device for focusing the light from the first group of emitters and the second group of emitters.
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Abstract
An optical assembly for reducing the etendue of a diode laser light source having a plurality of laser light emitters. The optical assembly comprises a first optical device for collimating beams of light emitted from the emitters of the diode laser. A second optical device spatially shifts a portion of the collimated light beams emitted from the diode laser to thereby reduce gaps or dark space between the beams. A third optical device focuses all of the light beams onto a surface, such as a surface of a light modulation surface.
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Citations
66 Claims
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1. An apparatus for reducing etendue of a laser light source having a plurality of emitters grouped into a first group of emitters and a second group of emitters, said apparatus comprising:
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a first optical device for collimating light emitted from the plurality of emitters; a second optical device for reducing a spatial separation between light from the first group of emitters and light from the second group of emitters; and a third optical device for focusing the light from the first group of emitters and the second group of emitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for reducing etendue of a light source having a plurality of spatially separated emitters, said apparatus comprising:
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a first optical device for shaping light emitted from the emitters; a second optical device for reducing a spatial separation between the shaped light; and a third optical device for focusing the light from the emitters onto a surface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for reducing etendue of a light source having a plurality of emitters grouped into a first group of emitters and second group of emitters, said method comprising the steps of:
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collimating light emitted from each of the plurality of emitters; spatially shifting light to thereby reduce a spatial separation between light emitted from the first group of emitters and light emitted from the second group of emitters; and focusing the light from the first group of emitters and light emitted from the second group of emitters onto a surface. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A light emitting apparatus having a reduced etendue, the apparatus comprising:
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a laser light source having a plurality of emitters grouped into a first group of emitters and a second group of emitters; a first optical device for collimating light emitted from the plurality of emitters; a second optical device for reducing spatial separation between light emitted from the first group of emitters and light emitted from the second group of emitters; and a third optical device for focusing the light from the first group of emitters and the light from the second group of emitters. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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41. An optical system having a plurality of light sources, each of the plurality of light sources comprising a plurality of emitters, said optical system comprising:
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a plurality of optical systems, each of the plurality of optical systems being associated with one of the plurality of light sources; wherein each optical system is operable to reduce an etendue of its associated one of the plurality of light sources. - View Dependent Claims (42, 43)
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44. An apparatus for reducing etendue of a light source having a plurality of emitters, said apparatus comprising:
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a first optical device for shaping light from the emitters; a second optical device for spatially shifting light from the emitters; and a third optical device for further shaping the light from the emitters. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. An apparatus for reducing etendue of a system, the system having a plurality of light emitters separated by gaps, said apparatus comprising:
an optical system for reducing gaps between beams of light emitted from the emitters. - View Dependent Claims (63, 64, 65, 66)
Specification