IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0763396
(2004-01-26)
|
등록번호 |
US-7405761
(2008-07-29)
|
발명자
/ 주소 |
- Feldman,Michael R.
- Te Kolste,Robert
|
출원인 / 주소 |
- Tessera North America, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
11 |
초록
▼
A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera gr
A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera greater than p. The smallest feature in the micro-cameras determines the resolution of the thin camera. Each macro-pixel may have any array of m features of size q, where q=d/m. Additional micro-cameras may be included to increase power.
대표청구항
▼
What is claimed is: 1. An imaging system comprising: an array of lenses; a plurality of sensors for each lens, each sensor having a single detection element of size PxPy, with the center-to-center spacing of the detection elements being dx in the x-direction and dy in the y-direction, the plurality
What is claimed is: 1. An imaging system comprising: an array of lenses; a plurality of sensors for each lens, each sensor having a single detection element of size PxPy, with the center-to-center spacing of the detection elements being dx in the x-direction and dy in the y-direction, the plurality of sensors being adjacent to an image plane of a corresponding lens; and a plurality of macro-pixels of size dxdy, each macro-pixel corresponding to a sensor and being between the corresponding lens and the sensor, each macro-pixel having mxmy micro-pixels, each micro-pixel being of size dx/mx*dy/my and having one of a high and a low transmittance function, wherein light transmitted through each lens and directed towards a sensor will impinge on the sensor after multiplication by the transmittance of the macro-pixel, and wherein the imaging system has a resolution in the image plane of greater than 1/px in the x-direction or 1/py in the y-direction. 2. The imaging system as recited in claim 1, wherein a ratio of a size of each macro-pixel to a size of each micro-pixel is proportional to a number of lenses in the array of lenses. 3. The imaging system as recited in claim 1, wherein the size dx/mx*dy/my is on an order of a desired resolution of the imaging system. 4. The imaging system as recited in claim 1, wherein all m micro-pixels for a corresponding macro-pixel have high transmittance. 5. The imaging system as recited in claim 1, wherein only one micro-pixel for a corresponding macro-pixel has high transmittance. 6. The imaging system as recited in claim 1, wherein a number of lenses in the x-direction is different from the number of lenses in the y-direction. 7. The imaging system as recited in claim 1, wherein the high transmittance is one and the low transmittance is zero. 8. The imaging system as recited in claim 1, wherein the high transmittance is greater than 0.5 and the low transmittance is less than 0.5. 9. The imaging system as recited in claim 1, wherein a majority of the macro-pixels have at least 20% high transmittance micro-pixels. 10. The imaging system as recited in claim 1, wherein the lens is formed on one side of a substrate and the plurality of macro-pixels is formed on an opposite side of the substrate. 11. The imaging system as recited in claim 1, wherein the plurality of macro-pixels is formed on the lens. 12. The imaging system as recited in claim 1, wherein at least part of a path between the lens and the array of macro-pixels has a refractive index greater than one. 13. The imaging system as recited in claim 12, wherein a majority of the path has a refractive index greater than one. 14. The imaging system as recited in claim 1, wherein one filtering element allows all the light incident thereon to impinge on the macro-pixel. 15. The imaging system as recited in claim 1, further comprising different color filters in paths of corresponding macro-pixels. 16. The imaging system as recited in claim 1, wherein the lens includes a substrate having parallel surfaces, an optical element being formed on at least one of the parallel surfaces. 17. The imaging system as recited in claim 1, wherein the lens includes at least two substrates having parallel surfaces, at least two optical elements, each optical element being formed on a different surface of the at least two of the parallel surfaces. 18. The imaging system as recited in claim 17, wherein one optical element of the least two optical elements is a diffractive optical element. 19. The imaging system as recited in claim 17, wherein the diffractive optical element corrects for aberration of the lens. 20. The imaging system as recited in claim 17, wherein the at least two substrates for an array of lenses are bonded together. 21. The imaging system as recited in claim 17, further comprising a spacer between the at least two substrates. 22. The imaging system as recited in claim 1, wherein dxdy=pxpy. 23. The imaging system as recited in claim 1, wherein each lens in array of lenses is a polygonal lens and corresponding macro-pixels and sensors fill in similarly sized area to that of the polygonal lens. 24. The imaging system as recited in claim 1, further comprising a processor receiving outputs from the plurality of sensors and combining outputs from corresponding sensors for different lenses.
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