Spectral imaging systems and methods of generating spectral image data using the same
US-2019346307-A1 · Nov 14, 2019 · US
Multispectral filter
US11209311B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11209311-B2 |
| Application number | US-202016822929-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2020 |
| Priority date | Mar 18, 2020 |
| Publication date | Dec 28, 2021 |
| Grant date | Dec 28, 2021 |
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Abstract
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An optical device may comprise an array of sensor elements that includes a plurality of pixels and a multispectral filter disposed on the array of sensor elements. The multispectral filter may be configured to pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels and pass a second transmission percentage of light of the particular spectral range to a second set of pixels of the plurality of pixels.
First claim
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What is claimed is: 1. An optical device comprising: an array of sensor elements that includes a plurality of pixels; and a multispectral filter disposed on the array of sensor elements, configured to: pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels; and pass a second transmission percentage of light of the particular spectral range to a second set of pixels of the plurality of pixels, wherein the first transmission percentage is greater than 0%, wherein the second transmission percentage is greater than 0%, and wherein the second transmission percentage is different from the first transmission percentage. 2. The optical device of claim 1 , wherein the multispectral filter includes an array of optical channels, wherein a first optical channel, of the array of optical channels, is configured to pass the first transmission percentage of light of the particular spectral range to the first set of pixels, wherein the first optical channel includes a first bandpass filter associated with the particular spectral range and an optical density coating associated with the first transmission percentage; and wherein a second optical channel, of the array of optical channels, is configured to pass the second transmission percentage of light of the particular spectral range to the second set of pixels, wherein the second optical channel includes a second bandpass filter associated with the particular spectral range and an optical density coating associated with the second transmission percentage. 3. The optical device of claim 1 , wherein the multispectral filter includes a first filter section associated with the first transmission percentage and a second filter section associated with the second transmission percentage, wherein an optical channel of the first filter section is configured to pass the first transmission percentage of light of the particular spectral range to the first set of pixels; and wherein an optical channel of the second filter section is configured to pass the second transmission percentage of light of the particular spectral range to the second set of pixels. 4. The optical device of claim 3 , wherein an optical density coating associated with the first transmission percentage is disposed on at least a portion of the first filter section that includes the optical channel of the first filter section, and wherein an optical density coating associated with the second transmission percentage is disposed on at least a portion of the second filter section that includes the optical channel of the second filter section. 5. The optical device of claim 1 , wherein the multispectral filter includes an array of optical channels, wherein an optical channel of the multispectral filter is configured to pass light of the particular spectral range, wherein a first section of the optical channel is configured to pass the first transmission percentage of light of the particular spectral range to the first set of pixels, and wherein a second section of the optical channel is configured to pass the second transmission percentage of light of the particular spectral range to the second set of pixels. 6. The optical device of claim 5 , wherein: the first section of the optical channel includes a first optical density coating associated with the first transmission percentage; and the second section of the optical channel includes a second optical density coating associated with the second transmission percentage. 7. The optical device of claim 1 , wherein the multispectral filter includes an array of optical channels, wherein each optical channel includes a plurality of optical channel sections configured to pass respective transmission percentages of light, wherein a first section of a particular optical channel is configured to pass the first transmission percentage of light of the particular spectral range to the first set of pixels, and wherein a second section of the particular optical channel is configured to pass the second transmission percentage of light of the particular spectral range to the second set of pixels. 8. A system, comprising: an array of sensor elements; and a multispectral filter comprising a plurality of optical channels that is disposed on at least a portion of the array of sensor elements, configured to: pass a first transmission percentage of bandpass filtered light associated with a particular spectral range to the array of sensor elements; and pass a second transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements, wherein the first transmission percentage is greater than 0%, wherein the second transmission percentage is greater than 0%, and wherein the second transmission percentage is different from the first transmission percentage. 9. The system of claim 8 , wherein: a first optical channel, of the plurality of optical channels, is configured to pass the first transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements, wherein the first optical channel is part of a filter section of the multispectral filter associated with the first transmission percentage; and a second optical channel, of the plurality of optical channels, is configured to pass the second transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements, wherein the second optical channel is part of a filter section of the multispectral filter associated with the second transmission percentage. 10. The system of claim 9 , wherein the first optical channel includes a first bandpass filter associated with the particular spectral range and an optical density coating associated with the first transmission percentage, and wherein the second optical channel includes a second bandpass filter associated with the particular spectral range and an optical density coating associated with the second transmission percentage. 11. The system of claim 8 , wherein the multispectral filter comprises a plurality of filter sections and a respective set of optical channels, of the plurality of optical channels, is included in each filter section, wherein an optical channel, of a set of optical channels associated with a first filter section, of the plurality of filter sections, is configured to pass the first transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements; and wherein an optical channel, of a set of optical channels associated with a second filter section, of the plurality of filter sections, is configured to pass the second transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements. 12. The system of claim 8 , wherein each optical channel, of the plurality of optical channels, includes a plurality of optical channel sections, wherein a first section of a particular optical channel, of the plurality of optical channels, is configured to pass the first transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements, and wherein a second section of the particular optical channel is configured to pass the second transmission percentage of bandpass filtered light associated with the particular spectral range to the array of sensor elements. 13. The system of claim 12 , wherein the first section of the particular optical channel includes an
Assignees
Inventors
Classifications
Colour filters · CPC title
comprising at least one thin film resonant cavity, e.g. in bandpass filters · CPC title
- G02B5/201Primary
in the form of arrays · CPC title
using photoelectric array detector · CPC title
Multi-channel spectroscopy · CPC title
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Frequently asked questions
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- What does patent US11209311B2 cover?
- An optical device may comprise an array of sensor elements that includes a plurality of pixels and a multispectral filter disposed on the array of sensor elements. The multispectral filter may be configured to pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels and pass a second transmission percentage of light of the …
- Who is the assignee on this patent?
- Viavi Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B5/201. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 28 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).