Lens Array Projector
First Claim
1. Optical apparatus, comprising:
- a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources; and
a beam homogenizer, comprising;
a first optical surface, comprising a first microlens array, which has a first pitch equal to the spacing between the light sources and which is aligned with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and transmits light emitted by the corresponding light source; and
a second optical surface, comprising a second microlens array, which is positioned to receive and focus the light transmitted by the first microlens array and which has a second pitch that is different from the first pitch.
2 Assignments
0 Petitions
Accused Products
Abstract
Optical apparatus includes a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources. A beam homogenizer includes a first optical surface, including a first microlens array, which has a first pitch equal to the spacing between the light sources and which is aligned with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and transmits light emitted by the corresponding light source. A second optical surface, including a second microlens array, is positioned to receive and focus the light transmitted by the first microlens array and has a second pitch that is different from the first pitch.
107 Citations
31 Claims
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1. Optical apparatus, comprising:
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a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources; and a beam homogenizer, comprising; a first optical surface, comprising a first microlens array, which has a first pitch equal to the spacing between the light sources and which is aligned with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and transmits light emitted by the corresponding light source; and a second optical surface, comprising a second microlens array, which is positioned to receive and focus the light transmitted by the first microlens array and which has a second pitch that is different from the first pitch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Optical apparatus, comprising:
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a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources; and a beam homogenizer, comprising; a first optical surface comprising a microlens array, which has a pitch equal to the spacing between the light sources and which is aligned with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and collimates light emitted by the corresponding light source; and a second optical surface defining a diverging lens having a negative optical power, which is positioned to receive and transmit the light collimated by the microlens array; and a collection lens, which is configured to receive and collimate the light transmitted by the second optical surface. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An optical method, comprising:
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providing a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources; aligning a first optical surface, comprising a first microlens array, which has a first pitch equal to the spacing between the light sources, with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and transmits light emitted by the corresponding light source; and positioning a second optical surface, comprising a second microlens array having a second pitch that is different from the first pitch, to receive and focus the light transmitted by the first microlens array so as to homogenize the light. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An optical method, comprising:
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providing a matrix of light sources arranged on a substrate with a predetermined, uniform spacing between the light sources; aligning a first optical surface, comprising a microlens array, which has a first pitch equal to the spacing between the light sources, with the matrix so that a respective optical axis of each microlens in the array intercepts a corresponding light source in the matrix and collimates light emitted by the corresponding light source; positioning a second optical surface, defining a diverging lens having a negative optical power, to receive and transmit the light collimated by the microlens array; and positioning a collection lens to receive and collimate the light transmitted by the second optical surface. - View Dependent Claims (29, 30, 31)
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Specification