High Resolution Structured Light Source
First Claim
1. A projection apparatus for generating high resolution structured illumination pattern comprising:
- an optical source including one or more VCSEL arrays, wherein each VCSEL array including at least 5000, but no more than 500,000 VCSEL devices separated from adjacent VCSEL devices by a distance that is no more than 5 μ
m is configured to generate a desired one or more high resolution structured illumination patterns, and wherein each VCSEL array has an area proportional to the size of the VCSEL array; and
a projection device including at least one optical element to magnify and project the desired one or more illumination patterns on to an area distal to the optical source.
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Abstract
A structured light source comprising VCSEL arrays is configured in many different ways to project a structured illumination pattern into a region for 3 dimensional imaging and gesture recognition applications. One aspect of the invention describes methods to construct densely and ultra-densely packed VCSEL arrays with to produce high resolution structured illumination pattern. VCSEL arrays configured in many different regular and non-regular arrays together with techniques for producing addressable structured light source are extremely suited for generating structured illumination patterns in a programmed manner to combine steady state and time-dependent detection and imaging for better accuracy. Structured illumination patterns can be generated in customized shapes by incorporating differently shaped current confining apertures in VCSEL devices. Surface mounting capability of densely and ultra-densely packed VCSEL arrays are compatible for constructing compact on-board 3-D imaging and gesture recognition systems.
69 Citations
20 Claims
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1. A projection apparatus for generating high resolution structured illumination pattern comprising:
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an optical source including one or more VCSEL arrays, wherein each VCSEL array including at least 5000, but no more than 500,000 VCSEL devices separated from adjacent VCSEL devices by a distance that is no more than 5 μ
m is configured to generate a desired one or more high resolution structured illumination patterns, and wherein each VCSEL array has an area proportional to the size of the VCSEL array; anda projection device including at least one optical element to magnify and project the desired one or more illumination patterns on to an area distal to the optical source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20)
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13. The projection apparatus as in claim 13, wherein the VCSEL devices from each said group, cluster or sub-array are interleaved with VCSEL devices of at least one other said group, cluster or sub-array, so as to eliminate a self-contained group, cluster or sub-array in the one or more VCSEL arrays.
Specification