Generation and modulation of non-visible structured light for augmented reality projection system
First Claim
Patent Images
1. An image projection system comprising:
- a light source configured to generate light having a plurality of wavelengths both visible and non-visible;
a color wheel optically coupled to the light source and configured to selectively pass a pre-determined range of wavelengths from the light source, the color wheel comprising;
a plurality of visible light segments, each being configured to pass a pre-determined range of visible wavelengths;
one or more non-visible light segments, each being configured to pass a pre-determined range of non-visible wavelengths;
an imaging modulator configured to generate an image from the light passed by the color wheel and to generate at least a portion of a structured light pattern while the one or more non-visible light segments of the color wheel are passing the pre-determined range of non-visible wavelengths;
a camera configured to detect the non-visible light and gather structured light data indicative of the structured light pattern projected onto a physical scene; and
a computing device configured to;
determine a topology of the physical scene by analyzing distortion in the structured light data; and
based on the analyzed distortion in the structured light data, cause adjustment of at least one of a frequency, a duration, or a sequencing of the non-visible wavelengths passed by the one or more non-visible light segments of the color wheel.
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Abstract
A display system having a modulated light source is configured to include one or more non-visible wavelengths as part of the display sequence. In one implementation a color wheel, configured to modulate the wavelengths emitted by a projector, includes an infrared (IR) segment, allowing for projection of an IR image. The wavelength modulated non-visible light may be spatially modulated to generate a structured light pattern, for signaling, to synchronization with other devices, and so forth.
115 Citations
26 Claims
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1. An image projection system comprising:
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a light source configured to generate light having a plurality of wavelengths both visible and non-visible; a color wheel optically coupled to the light source and configured to selectively pass a pre-determined range of wavelengths from the light source, the color wheel comprising; a plurality of visible light segments, each being configured to pass a pre-determined range of visible wavelengths; one or more non-visible light segments, each being configured to pass a pre-determined range of non-visible wavelengths; an imaging modulator configured to generate an image from the light passed by the color wheel and to generate at least a portion of a structured light pattern while the one or more non-visible light segments of the color wheel are passing the pre-determined range of non-visible wavelengths; a camera configured to detect the non-visible light and gather structured light data indicative of the structured light pattern projected onto a physical scene; and a computing device configured to; determine a topology of the physical scene by analyzing distortion in the structured light data; and based on the analyzed distortion in the structured light data, cause adjustment of at least one of a frequency, a duration, or a sequencing of the non-visible wavelengths passed by the one or more non-visible light segments of the color wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a projector comprising; a wavelength modulated light source configured to generate light having a particular pre-determined range of wavelengths both visible and non-visible; and one or more imaging modulators configured to generate visible and non-visible images from the light generated by the wavelength modulated light source; wherein the projector is configured to project the visible and non-visible images onto a physical scene in an environment; a camera configured to capture the non-visible images projected onto the physical scene to characterize a topology of the physical scene; and wherein the wavelength modulated light source is further configured to adjust a range of wavelengths of the non-visible light based at least in part on the non-visible images captured by the camera. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. One or more non-transitory computer-readable media storing computer-executable instructions that, when executed, cause one or more processors to perform acts comprising:
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modulating one or more light sources to produce light having a pre-determined range of non-visible wavelengths; generating a structured light pattern with the non-visible wavelengths; projecting the structured light pattern onto a physical scene; modulating the one or more light sources to produce a pre-determined range of visible wavelengths; generating a visible light image with the visible wavelengths; projecting the visible light image onto the physical scene; capturing an image of the structured light pattern projected into the physical scene; analyzing the captured image to identify distortion in the structured light pattern to determine characteristics of a topology of the physical scene; generating an adjusted structural light pattern based at least in part on the determined characteristics of the topology of the physical scene; and projecting the adjusting structural light pattern onto the physical scene. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification