Patent US5457566A successfully refreshed from Google Patents.
US5457566A
Expired / Lapsed
US
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DMD scanner
Assignee: Texas Instruments Inc
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Filing: 1992-12-30
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Granted: 1995-10-10
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Expires: 2012-12-30
Abstract
Abstract A scanning optical system is disclosed. The system consists of a spatial light modulator with minimum diffraction effects that can be scanned line by line, a detector appropriate to the application and appropriate optics. One application of such a system is in the infrared realm. The disclosure eliminates the need for a spinning mirror that is standard is infrared scanning systems. Another application is in photocopying. Using a line scanning device, such as a membrane deformable mirror device, eliminates the need for a moving light bar.
Inventors
- 👤 Jeffrey B. Sampsell
- 👤 Daryl G. Sartain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:35
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/126; H04N1/1275; G; G02; G02B; G02B26/00; G02B26/08; G02B26/0816; G02B26/0833; G02B26/0841; G02B26/10; H04N1/024; H04N1/028; H04N3/00; H04N3/02; H04N3/08; H04N3/09; H04N3/10; H04N3/12; H04N5/00; H04N5/74; H04N5/7416; H04N5/7458
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
58 words
An optical system for scanning an image comprising: a. a spatial light modulator for receiving said image and for selectively reflecting portions of said image; b. a detector for detecting said portions; and c. optics for directing said image onto said spatial light modulator and said portions of said image from said spatial light modulator onto said detector.
Claim 2
Dependent Claim
58 words
An optical system for scanning an image comprising: a. a spatial light modulator for receiving said image and for selectively reflecting portions of said image; b. a detector for detecting said portions; and c. optics for directing said image onto said spatial light modulator and said portions of said image from said spatial light modulator onto said detector.
Claim 3
Dependent Claim
12 words
The system in claim 1 wherein said detector is an infrared detector.
Claim 4
Dependent Claim
23 words
The system in claim 1 further comprising a print engine of a copier wherein said detector is an input to said print engine.
Claim 5
Dependent Claim
77 words
An optical system for scanning an image comprising: a detector for detecting light; at least one lens for focusing light from an image source; a spatial light modulator array receiving said focused light, said spatial light modulator array comprised of an array of spatial light modulator cells, each of said cells selectively addressable for deflecting incident light toward said detector, wherein said cells are serially addressed thereby serially deflecting portions of said focused light onto said detector.
Claim 6
Dependent Claim
77 words
An optical system for scanning an image comprising: a detector for detecting light; at least one lens for focusing light from an image source; a spatial light modulator array receiving said focused light, said spatial light modulator array comprised of an array of spatial light modulator cells, each of said cells selectively addressable for deflecting incident light toward said detector, wherein said cells are serially addressed thereby serially deflecting portions of said focused light onto said detector.
Claim 7
Dependent Claim
35 words
The system of claim 4 wherein said spatial light modulator array is comprised of at least two rows of spatial light modulator cells, each said rows comprised of at least two spatial light modulator cells.
Claim 8
Dependent Claim
45 words
The system of claim 4 wherein said spatial light modulator array is comprised of at least two rows of spatial light modulator cells, each said row comprised of at least one spatial light modulator cell, wherein all said cells on a row are addressed simultaneously.
Claim 9
Dependent Claim
51 words
The system of claim 4 wherein said spatial light modulator array is comprised of at least two rows of spatial light modulator cells, each said row comprised of at least one spatial light modulator cell, wherein all said cells on a row are addressed simultaneously and each row is addressed sequentially.
Claim 10
Dependent Claim
11 words
The system of claim 4 wherein said image source is self-radiating.
Claim 11
Dependent Claim
15 words
The system of claim 4 wherein said image source is illuminated by a light source.
Claim 12
Dependent Claim
12 words
The system of claim 4 wherein said detector is an infrared detector.
Claim 13
Dependent Claim
18 words
The system of claim 4 further comprising a print engine connected to said detector for reproducing said image.
Claim 14
Dependent Claim
34 words
The system of claim 4 further comprising an optical stop wherein light reflecting off an undetected cell of said spatial light modulator array is prevented from passing to said detector by said optical stop.
Claim 15
Dependent Claim
12 words
The system of claim 12 wherein said optical stop is a mirror.
Claim 16
Independent Claim
76 words
A method of scanning an image comprising: providing light from an image source; focusing said light from an image source onto a spatial light modulator wherein said spatial light modulator comprises an array of spatial light modulator cells; deflecting a portion of said spatial light modulator cells to deflect a portion of said focused light; detecting said deflected portion of said focused light; and repeating said deflecting and detecting steps until the image has been detected.
Claim 17
Independent Claim
76 words
A method of scanning an image comprising: providing light from an image source; focusing said light from an image source onto a spatial light modulator wherein said spatial light modulator comprises an array of spatial light modulator cells; deflecting a portion of said spatial light modulator cells to deflect a portion of said focused light; detecting said deflected portion of said focused light; and repeating said deflecting and detecting steps until the image has been detected.
Claim 18
Dependent Claim
18 words
The method of claim 14 wherein said deflecting step comprises deflecting one row of said spatial light modulator.
Claim 19
Dependent Claim
14 words
The method of claim 14 wherein said light from an image source is infrared.
Claim 20
Dependent Claim
82 words
An optical system for scanning an input image comprising: a. a lens for focusing light from an image source along a first light path; b. a spatial light modulator on said first light path for receiving said focused light and selectively reflecting portions of said focused light, wherein said selectively reflected portions of said focused light are transmitted along a second light path; and c. a detector on said second light path for receiving said selectively reflected portions of said focused light.
Claim 21
Dependent Claim
82 words
An optical system for scanning an input image comprising: a. a lens for focusing light from an image source along a first light path; b. a spatial light modulator on said first light path for receiving said focused light and selectively reflecting portions of said focused light, wherein said selectively reflected portions of said focused light are transmitted along a second light path; and c. a detector on said second light path for receiving said selectively reflected portions of said focused light.
Claim 22
Dependent Claim
29 words
The optical system of claim 17 further comprising a stop minor on said first light path for reflecting said light from said image source toward said spatial light modulator.
Claim 23
Dependent Claim
22 words
The optical system of claim 18 wherein said spatial light modulator selectively reflects portions of said focused light around said stop mirror.
Claim 24
Dependent Claim
17 words
The optical system of claim 17 wherein said spatial light modulator is a membrane deformable mirror device.
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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) | 1998-10-09 | 1999-04-10 | 1999-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-09 | 2003-04-10 | 2003-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-09 | 2007-04-10 | 2007-10-10 | $7700.00 | Window Closed / Lapsed |