Patent US4288812A successfully refreshed from Google Patents.
US4288812A
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US
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Color filter
Assignee: RCA Licensing Corp
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Filing: 1979-11-19
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Granted: 1981-09-08
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Expires: 1999-11-19
Abstract
Abstract A color filter for a single image pickup device camera features using color filter elements that have one dimension that is less than the corresponding dimension of photosensors in pickup device. This results in a wider bandwidth signal.
Inventors
- 👤 Roland N. Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:39
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/201; H; H04; H04N; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/134; H04N25/40; H04N25/44; H04N25/447
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
62 words
A color filter for use with an image pickup device having a plurality of photosensors and a line scan direction, said filter comprising a plurality of horizontally repetitive sets of areas of different colors, all of the areas having a dimension in the direction of said line scan which is less than the corresponding dimension of the photosensors of said pickup device.
Claim 2
Dependent Claim
62 words
A color filter for use with an image pickup device having a plurality of photosensors and a line scan direction, said filter comprising a plurality of horizontally repetitive sets of areas of different colors, all of the areas having a dimension in the direction of said line scan which is less than the corresponding dimension of the photosensors of said pickup device.
Claim 3
Dependent Claim
12 words
A filter as claimed in claim 1, wherein said areas are rectangular.
Claim 4
Dependent Claim
15 words
A filter as claimed in claim 1, wherein said colors comprise red, green, and blue.
Claim 5
Dependent Claim
15 words
A filter as claimed in claim 1, wherein said colors comprise yellow, cyan, and green.
Claim 6
Dependent Claim
61 words
A filter as claimed in claim 1, wherein said filter comprises two overlayed sections, each having areas of a single color alternating with neutral density areas, each section having filter areas of a different color from that of the other section and being staggered with respect thereto, whereby said filter has three different color areas due to overlap between said sections.
Claim 7
Dependent Claim
15 words
A filter as claimed in claim 1, wherein said one dimension is the horizontal dimension.
Claim 8
Dependent Claim
25 words
A filter as claimed in claim 1, wherein said dimension of the areas are two thirds the length of the corresponding dimension of the photosensors.
Claim 9
Dependent Claim
29 words
A filter as claimed in claim 1, wherein areas having a particular color are horizontally offset with respect to areas having the same particular color in vertically adjacent rows.
Claim 10
Dependent Claim
20 words
A filter as claimed in claim 1, further comprising the camera pickup device, said areas being mounted proximate the photosensors.
Claim 11
Independent Claim
45 words
A device comprising a pickup device having a plurality of photosensors, and a color filter having a plurality of horizontally repetitive sets of areas of different colors, said areas being vertically offset with respect to said photosensors and having the same height as said photosensors.
Claim 12
Independent Claim
45 words
A device comprising a pickup device having a plurality of photosensors, and a color filter having a plurality of horizontally repetitive sets of areas of different colors, said areas being vertically offset with respect to said photosensors and having the same height as said photosensors.
Claim 13
Independent Claim
62 words
A device comprising a pickup device having a plurality of photosensors read out with a one third of a photosensor height vertical offset between fields to achieve vertical interlace, and a color filter having a plurality of horizontally repetitive sets of areas of different colors, said areas being vertically offset with respect to said photosensors by one sixth of a photosensor height.
Claim 14
Independent Claim
62 words
A device comprising a pickup device having a plurality of photosensors read out with a one third of a photosensor height vertical offset between fields to achieve vertical interlace, and a color filter having a plurality of horizontally repetitive sets of areas of different colors, said areas being vertically offset with respect to said photosensors by one sixth of a photosensor height.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |