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US 10,097,771 B2Granted
Wideband ambient light rejection
AssigneeApple Inc.
InventorsAlexander Shpunt, Niv Gilboa, Haim Bezdin
Life of this patent
Estimating the term…
Abstract
Optical apparatus includes an image sensor and objective optics, which are configured to collect and focus optical radiation over a range of wavelengths along a common optical axis toward a plane of the image sensor. A dispersive element is positioned to spread the optical radiation collected by the objective optics so that different wavelengths in the range are focused along different, respective optical axes toward the plane.
Claims17
Optical apparatus, comprising:
- an image sensor;
- and
- objective optics, which are configured to collect and focus optical radiation over a range of wavelengths within at least one of an infrared and a visible part of the optical spectrum toward a plane of the image sensor, and which comprise a dispersive element configured so that the optics have a chromatic aberration within the range in excess of one micrometer per nanometer of wavelength at the plane.
Optical apparatus, comprising:
- an image sensor;
- and
- objective optics, which are configured to collect and focus optical radiation over a range of wavelengths toward a plane of the image sensor, and which comprise a dispersive element configured so that the optics have a chromatic aberration in excess of one micrometer per nanometer of wavelength at the plane,
- wherein the dispersive element has a first tilt relative to an optical axis of the objective optics, and wherein the apparatus comprises a wedged lens, which is configured to focus the optical radiation with a second tilt, opposite to the first tilt.
1 more element
A method for imaging, comprising:
- collecting and focusing optical radiation over a range of wavelengths within at least one of an infrared and visible part of the optical spectrum along an optical path toward a plane of an image sensor;
- and
- positioning a dispersive element in the optical path so that the radiation is focused with a chromatic aberration within the range in excess of one micrometer per nanometer of wavelength at the plane.
Dependencies are inferred from the claim text.