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US 6,646,682 B1Granted
Linear tri-color image sensors
AssigneesSyscan (Shenzhen) Technology Co., Limited, Syscan, Inc.
InventorAlpha Hou
Life of this patent
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Abstract
An improved color image linear sensor is disclosed to minimize the registration problems commonly seen in a sensor using three rows of photodetectors. In particular, according to one embodiment, the photodetectors in the improved color image linear sensor are shaped in triangle so that the triangular-like shaped photodetectors are interspersed with the upside-down triangular-like shaped photodetectors.
Claims15
A color image sensor comprising:
- a first type of photodetectors sensitive to a first spectral region;
- a second type of photodetectors sensitive to a second spectral region;
- a third type of photodetectors sensitive to a third spectral region;
- and
- the three types of photodetectors arranged in a row and in such a way that each of the first type of photodetectors is between one of the second type of photodetectors and one of the third type of photodetectors, wherein two adjacent color pixels from the color image sensor includes a first component respectively from two adjacent ones of the first type of photodetectors, an identical second component from one of the second type of photodetectors or an identical third component from one of the third type of photodetectors.
2 more elements
A color image sensor comprising:
- a row of photodetectors, every other one of the photodetectors being of a first shape and every another one of the photodetectors being of a second shape;
- a filter made of individual filter elements superimposed in one-to-one registry on each of the photodetectors;
- wherein every one of the photodetectors with a first spectral transparent characteristic is between one of the photodetectors with a second spectral transparent characteristic and one of the photodetectors with a third spectral transparent characteristic;
- and
- wherein two adjacent color pixels from the color image sensor include a first component respectively from two adjacent photodetectors of the first spectral transparent characteristic, an identical second component from a photodetector of the second spectral transparent characteristic or an identical third component from a photodetector of the third spectral transparent characteristic.
2 more elements
A color image sensor comprising:
- triangular-shaped photodetectors coated with a filter responsive to a first spectral region;
- upside-down triangular-shaped photodetectors;
- and
- the triangular-shaped and upside-down triangular-shaped photodetectors arranged in a row and in such a way that each of the triangular-shaped photodetectors is between two of the upside-down triangular-shaped photodetectors, wherein two of the upside-down triangular-shaped photodetectors are respectively coated with a filter responsive to a second spectral region and a third spectral region;
- and
- wherein, when exposed to a non-colored scanning object, each of the photodetectors corresponding to an image pixel of a resultant image, signals from the photodetectors are adjusted by a factor selected from a group consisting of k, 1.967 k, and 5.360 k, to generalize the resultant image.
3 more elements
Dependencies are inferred from the claim text.