Collimating array for an optical sensing device
AssigneeSpectricity
InventorsJonathan Borremans, Maarten De Bock, Ruben Lieten
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Abstract
An optical sensor system comprises an array of optical sensors arranged on an integrated circuit and a plurality of filters with the bottom surface of the plurality of filters located above the top surface of the array of optical sensors. The optical sensor system further comprises an angle-of-incidence layer that includes a top surface, a bottom surface, and a thickness Y, where the bottom surface of the angle-of-incidence layer is located a predetermined distance X from the top surface of the plurality of filters and the angle-of-incidence layer includes a plurality of collimating elements, with each collimating element of the angle-of-incidence layer having an aperture width Z.
Claims20
A spectrometer device comprising:
- a plurality of optical sensors formed on an integrated circuit, wherein the plurality of optical sensors are configured in an array;
- a plurality of sets of optical filters formed atop at least a portion of the array, wherein a set of optical filters is associated with a set of optical sensors of the plurality of optical sensors, wherein the set of optical filters of the plurality of sets of optical filters includes a plurality of optical filters, wherein each optical filter of the plurality of optical filters is configured to pass light in a different wavelength range;
- and
- an angle-of-incidence element formed atop the set of optical filters, wherein the angle-of-incidence element is configured to limit an angle-of-incidence of light incident to the set of optical filters based on a thickness of the angle-of-incidence element, an aperture width associated with the angle-of-incidence element and a predetermined gap between the angle-of-incidence element and the set of optical filters.
A system for imaging a scene, comprising:
- a plurality of optical sensors implemented on an integrated circuit;
- a plurality of sets of interference filters, wherein a set of interference filters of the plurality of sets of interference filters includes a plurality of interference filters arranged in a pattern, wherein each interference filter of the plurality of interference filters is configured to pass light in a different wavelength range, wherein each set of interference filters of the plurality of sets of interference filters is associated with a spatial area of the scene;
- and
- an angle-of-incidence element, wherein the angle-of-incidence element is located between a set of interference filters and light incident to the set of interference filters, and wherein the angle-of-incidence element is further configured to limit an angle-of-incidence of the incident light to the set of interference filters based on a thickness of the angle-of-incidence element, an aperture width associated with the angle-of-incidence element and a predetermined gap between the angle-of-incidence element and the set of interference filters.
Dependencies are inferred from the claim text.