Multispectral image sensor, camera system and method of manufacturing a multispectral image sensor
Assigneeams International AG
InventorFrancesco Paolo D'Aleo
Life of this patent
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Abstract
A multispectral image sensor includes a plurality of photosensitive elements configured to capture electromagnetic radiation received from a scene or an object, and first and second optical modulators arranged on an incident side of the plurality of photosensitive elements. The first and second optical modulators are configured to modulate electromagnetic radiation within respective first and second wavelength ranges, and to transmit electromagnetic radiation outside the respective first and second wavelength ranges. The first wavelength range is different from the second wavelength range.
Claims20
A multispectral image sensor, comprising:
- a plurality of photosensitive elements, each configured to capture electromagnetic radiation received from a scene or an object and to generate a photo signal depending on the captured electromagnetic radiation;
- and
- a first optical modulator arranged on an incident side of the plurality of photosensitive elements, the first optical modulator being configured to modulate electromagnetic radiation within a first wavelength range, and to transmit electromagnetic radiation outside the first wavelength range;
- and
- a second optical modulator arranged on an incident side of the plurality of photosensitive elements, the second optical modulator being configured to modulate electromagnetic radiation within a second wavelength range, and to transmit electromagnetic radiation outside the second wavelength range;
- wherein the first wavelength range is different form the second wavelength range;
- and
- wherein the first and/or second optical modulator is realized by a spatially distributed plurality of pinholes or by a passive matrix that is based on a phase mask.
A method of manufacturing a multispectral image sensor, the method comprising:
- providing a plurality of photosensitive elements, each configured to capture electromagnetic radiation received from a scene or an object and to generate a photo signal depending on the captured electromagnetic radiation;
- providing a first optical modulator arranged on an incident side of the plurality of photosensitive elements, the first optical modulator being configured to modulate electromagnetic radiation within a first wavelength range, and to transmit electromagnetic radiation outside the first wavelength range;
- and
- providing a second optical modulator arranged on an incident side of the plurality of photosensitive elements, the second optical modulator being configured to modulate electromagnetic radiation within a second wavelength range, and to transmit electromagnetic radiation outside the second wavelength range;
- wherein the first wavelength range is different from the second wavelength range;
- and
- wherein the first and/or second optical modulator is realized by a spatially distributed plurality of pinholes or by a passive matrix that is based on a phase mask.
Dependencies are inferred from the claim text.