US9363425B2
Active / In Force
US
⏱️ 7.1 years remaining
Color filter arrangements for fused array imaging systems
Assignee: Semiconductor Components Industries LLC
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Filing: 2013-11-27
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Granted: 2016-06-07
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Expires: 2033-11-27
Abstract
Abstract Electronic devices may include camera modules. A camera module may include an array camera having an array of lenses and a corresponding array of image sensors. The array of image sensors may include a monochromatic image sensor such as a green image sensor and a polychromatic image sensor such as a red and blue image sensor. The red and blue image sensor may include a color filter array of red and blue color filter elements formed over an array of image pixels. The red and blue color filter elements in the polychromatic image sensor may be arranged in a checkerboard pattern, a zigzag pattern that extends vertically from the top of the pixel array to the bottom of the pixel array, or a diagonal strip pattern. The electronic device may include processing circuitry for combining monochromatic images from the monochromatic image sensor with polychromatic images from the polychromatic image sensor.
Inventors
- 👤 Robert A. Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
H04N5/2257; H; H04; H04N; H04N23/00; H04N23/57; H04N23/80; H04N23/84; H04N23/843; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/133; H04N25/134; H04N9/045
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
235 words
An imaging device, comprising: a monochromatic image sensor having a first array of image pixels, wherein the image pixels in the first array of image pixels are diamond-shaped image pixels; a polychromatic image sensor comprising: a second array of image pixels, wherein the image pixels in the second array of image pixels are diamond-shaped image pixels; and a color filter array formed over the second array of image pixels and comprising red and blue color filter elements, wherein the red color filter elements are arranged to form red diagonal stripes of contiguous red color filter elements that extend diagonally from a first edge of the second array to a second edge of the second array, wherein the blue color filter elements are arranged to form blue diagonal stripes of contiguous blue color filter elements that extend diagonally from the first edge of the second array to the second edge of the second array, and wherein the red diagonal stripes alternate with the blue diagonal stripes; and processing circuitry configured to combine monochromatic image data from the monochromatic image sensor with polychromatic image data from the polychromatic image sensor to form full-color images, wherein the monochromatic image sensor and the polychromatic image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 2
Dependent Claim
235 words
An imaging device, comprising: a monochromatic image sensor having a first array of image pixels, wherein the image pixels in the first array of image pixels are diamond-shaped image pixels; a polychromatic image sensor comprising: a second array of image pixels, wherein the image pixels in the second array of image pixels are diamond-shaped image pixels; and a color filter array formed over the second array of image pixels and comprising red and blue color filter elements, wherein the red color filter elements are arranged to form red diagonal stripes of contiguous red color filter elements that extend diagonally from a first edge of the second array to a second edge of the second array, wherein the blue color filter elements are arranged to form blue diagonal stripes of contiguous blue color filter elements that extend diagonally from the first edge of the second array to the second edge of the second array, and wherein the red diagonal stripes alternate with the blue diagonal stripes; and processing circuitry configured to combine monochromatic image data from the monochromatic image sensor with polychromatic image data from the polychromatic image sensor to form full-color images, wherein the monochromatic image sensor and the polychromatic image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 3
Dependent Claim
25 words
The imaging device defined in claim 1 wherein the monochromatic image sensor comprises a clear color filter formed over the first array of image pixels.
Claim 4
Dependent Claim
25 words
The imaging device defined in claim 1 wherein the monochromatic image sensor comprises a green color filter formed over the first array of image pixels.
Claim 5
Dependent Claim
186 words
An imaging device, comprising: a green image sensor having a first array of image pixels and a green color filter formed over the first array of image pixels; a red and blue image sensor having a second array of image pixels and a color filter array formed over the second array of image pixels, wherein the color filter array comprises red and blue color filter elements, wherein the green image sensor and the red and blue image sensor are operable in high-dynamic-range mode in which alternating rows of image pixels in each of the first and second arrays are exposed for different lengths of time in a given imaging frame; and processing circuitry configured to combine green image data from the green image sensor with red and blue image data from the red and blue image sensor to form full-color images, wherein the green image sensor and the red and blue image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 6
Dependent Claim
186 words
An imaging device, comprising: a green image sensor having a first array of image pixels and a green color filter formed over the first array of image pixels; a red and blue image sensor having a second array of image pixels and a color filter array formed over the second array of image pixels, wherein the color filter array comprises red and blue color filter elements, wherein the green image sensor and the red and blue image sensor are operable in high-dynamic-range mode in which alternating rows of image pixels in each of the first and second arrays are exposed for different lengths of time in a given imaging frame; and processing circuitry configured to combine green image data from the green image sensor with red and blue image data from the red and blue image sensor to form full-color images, wherein the green image sensor and the red and blue image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 7
Dependent Claim
24 words
The imaging device defined in claim 4 wherein the image pixels in the first and second arrays of image pixels are diamond-shaped image pixels.
Claim 8
Dependent Claim
28 words
The imaging device defined in claim 5 wherein the red color filter elements and the blue color filter elements are interspersed among each other in a checkerboard pattern.
Claim 9
Dependent Claim
93 words
The imaging device defined in claim 5 wherein the red color filter elements and the blue color filter elements are arranged in respective groups of red color filter elements and groups of blue color filter elements, wherein each group of red color filter elements and each group of blue color filter elements forms a zigzag pattern that extends from an upper edge of the second array to a lower edge of the second array, and wherein the groups of red color filter elements are interleaved with the groups of blue color filter elements.
Claim 10
Dependent Claim
82 words
The imaging device defined in 5 wherein the red color filter elements are arranged to form red diagonal stripes that extend diagonally from a first edge of the second array to a second edge of the second array, wherein the blue color filter elements are arranged to form blue diagonal stripes that extend diagonally from the first edge of the second array to the second edge of the second array, and wherein the red diagonal stripes alternate with the blue diagonal stripes.
Claim 11
Dependent Claim
82 words
The imaging device defined in 5 wherein the red color filter elements are arranged to form red diagonal stripes that extend diagonally from a first edge of the second array to a second edge of the second array, wherein the blue color filter elements are arranged to form blue diagonal stripes that extend diagonally from the first edge of the second array to the second edge of the second array, and wherein the red diagonal stripes alternate with the blue diagonal stripes.
Claim 12
Independent Claim
274 words
A system, comprising: a central processing unit; memory; input-output circuitry; and an imaging device, wherein the imaging device comprises: a monochromatic image sensor having a first array of image pixels, wherein the image pixels in the first array of image pixels are diamond-shaped image pixels; a polychromatic image sensor comprising: a second array of image pixels, wherein the image pixels in the second array of image pixels are diamond-shaped image pixels; and a color filter array formed over the second array of image pixels and comprising red and blue color filter elements, wherein the red color filter elements and the blue color filter elements are arranged in respective groups of red color filter elements and groups of blue color filter elements, wherein each group of red color filter elements and each group of blue color filter elements forms a zigzag pattern that extends from an upper edge of the second array to a lower edge of the second array, wherein each red color filter element within each group of red color filter elements shares a side with at least one other red color filter element, and wherein the groups of red color filter elements are interleaved with the groups of blue color filter elements; and processing circuitry configured to combine monochromatic image data from the monochromatic image sensor with polychromatic image data from the polychromatic image sensor to form full-color images, wherein the monochromatic image sensor and the polychromatic image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 13
Independent Claim
274 words
A system, comprising: a central processing unit; memory; input-output circuitry; and an imaging device, wherein the imaging device comprises: a monochromatic image sensor having a first array of image pixels, wherein the image pixels in the first array of image pixels are diamond-shaped image pixels; a polychromatic image sensor comprising: a second array of image pixels, wherein the image pixels in the second array of image pixels are diamond-shaped image pixels; and a color filter array formed over the second array of image pixels and comprising red and blue color filter elements, wherein the red color filter elements and the blue color filter elements are arranged in respective groups of red color filter elements and groups of blue color filter elements, wherein each group of red color filter elements and each group of blue color filter elements forms a zigzag pattern that extends from an upper edge of the second array to a lower edge of the second array, wherein each red color filter element within each group of red color filter elements shares a side with at least one other red color filter element, and wherein the groups of red color filter elements are interleaved with the groups of blue color filter elements; and processing circuitry configured to combine monochromatic image data from the monochromatic image sensor with polychromatic image data from the polychromatic image sensor to form full-color images, wherein the monochromatic image sensor and the polychromatic image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.
Claim 14
Dependent Claim
29 words
The system defined in claim 9 wherein the monochromatic image sensor comprises a green image sensor having a green color filter formed over the first array of image pixels.
Claim 15
Dependent Claim
28 words
The imaging device defined in claim 1 , wherein each of the blue color filter elements shares a side with at least one other blue color filter element.
Claim 16
Dependent Claim
28 words
The imaging device defined in claim 1 , wherein each of the red color filter elements shares a side with at least one other red color filter element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2019-06-07 | 2019-12-07 | 2020-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2023-06-07 | 2023-12-07 | 2024-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2027-06-07 | 2027-12-07 | 2028-06-07 | $7700.00 | Pending Window |