Pattern projection using micro-lenses
AssigneePrimesense Ltd.
InventorsBarak Freedman, Alexander Shpunt, Meir Machlin, Yoel Arieli
Life of this patent
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Abstract
An illumination assembly includes a light source, which is configured to emit optical radiation. A transparency containing a plurality of micro-lenses, which are arranged in a non-uniform pattern and are configured to focus the optical radiation to form, at a focal plane, respective focal spots in the non-uniform pattern. Optics are configured to project the non-uniform pattern of the focal spots from the focal plane onto an object.
Claims17
1-52. (canceled)
An illumination assembly, comprising:
- a light source, which is configured to emit optical radiation;
- a transparency containing a plurality of micro-lenses, which are arranged in a non-uniform pattern and are configured to focus the optical radiation to form, at a focal plane, respective focal spots in the non-uniform pattern;
- and
- optics configured to project the non-uniform pattern of the focal spots from the focal plane onto an object.
A method for illumination, comprising:
- transilluminating a transparency containing a plurality of micro-lenses arranged in a non-uniform pattern,
- wherein the micro-lenses are configured to focus the optical radiation so as to form, at a focal plane, respective focal spots in the non-uniform pattern;
- and
- projecting the non-uniform pattern of the focal spots from the focal plane onto an object.
An illumination assembly, comprising:
- a diffuser;
- a light source, which is configured to transilluminate the diffuser with optical radiation;
- a transparency containing an array of micro-lenses, which are arranged to focus the optical radiation transmitted through the diffuser, thereby generating a pattern of spots;
- and
- projection optics, which are arranged to project the pattern onto an object.
A method for illumination, comprising:
- transilluminating a diffuser with optical radiation;
- focusing the optical radiation transmitted through the diffuser using an array of micro-lenses, thereby generating a pattern of spots;
- and
- projecting the pattern onto an object.
Dependencies are inferred from the claim text.