US5161064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation source for a printer
Assignee: Polaroid Corp
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Filing: 1990-11-21
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Granted: 1992-11-03
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Expires: 2010-11-21
Abstract
Abstract Source of laser radiation for a printer includes at least one laser diode array and an optical system which is telecentric in at least one azimuth for imaging the near field distribution from the laser diode array(s) on a recording medium.
Inventors
- 👤 Peter P. Clark
- 👤 Carmina Londono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:46
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/08; G02B19/00; G02B19/0033; G02B19/0047; G02B19/0052; G02B19/0057; B; B41; B41J; B41J2/00; B41J2/435; B41J2/475; G02B19/0004; G02B19/0009; G02B19/0014; G02B27/00; G02B27/09; G02B27/0927; G02B27/0938; G02B27/095; G02B27/0955; G02B27/0966; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1204
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A source of radiation for use in printing on a recording medium, said source comprising: at least one laser diode array having near and far field radiation distributions; and an optical system which is telecentric in at least one azimuth for providing an image of said near field distribution from said laser diode array substantially on the medium, said telecentric optical system comprising: an illuminator for providing a first image of said near field distribution at an intermediate image plane; and an optical system for reimaging said first image on the medium.
Claim 2
Dependent Claim
92 words
A source of radiation for use in printing on a recording medium, said source comprising: at least one laser diode array having near and far field radiation distributions; and an optical system which is telecentric in at least one azimuth for providing an image of said near field distribution from said laser diode array substantially on the medium, said telecentric optical system comprising: an illuminator for providing a first image of said near field distribution at an intermediate image plane; and an optical system for reimaging said first image on the medium.
Claim 3
Dependent Claim
63 words
The source of claim 1 wherein said telecentric optical system comprises: an illuminator for providing an image of said near field distribution at an intermediate image plane; an anamorphic optical system which receives said intermediate image; and an objective optical system, which operates in conjunction with said anamorphic optical system, to reimage said intermediate image to provide the final image on the medium.
Claim 4
Dependent Claim
16 words
The source of claim 1 wherein said illuminator comprises a collimator and an objective optical system.
Claim 5
Dependent Claim
16 words
The source of claim 2 wherein said illuminator comprises a collimator and an objective optical system.
Claim 6
Dependent Claim
22 words
The source of claim 2 wherein said anamorphic optical system comprises a first cylindrical lens system and a second cylindrical lens system.
Claim 7
Dependent Claim
17 words
The source of claim 2 wherein said anamorphic optical system comprises at least one toric lens system.
Claim 8
Dependent Claim
36 words
The source of claim 1 wherein said telecentric optical system comprises a collimator, a first objective lens system, an anamorphic optical system which is telecentric in at least one azimuth, and a second objective lens system.
Claim 9
Dependent Claim
71 words
A source of radiation for use in printing upon a recording medium said source comprising: a plurality of phased array laser diodes; optical means for combining the radiation from said phased array laser diodes for travel along a common optical path; and an optical system which is telecentric in at least one azimuth for providing an image of the near field distribution from said laser diode array on the recording medium.
Claim 10
Dependent Claim
71 words
A source of radiation for use in printing upon a recording medium said source comprising: a plurality of phased array laser diodes; optical means for combining the radiation from said phased array laser diodes for travel along a common optical path; and an optical system which is telecentric in at least one azimuth for providing an image of the near field distribution from said laser diode array on the recording medium.
Claim 11
Dependent Claim
23 words
The source of claim 8 where the combining means is an array of mirrors located at an intermediate image of the near field.
Claim 12
Dependent Claim
21 words
The source of claim 9 where prisms are used before the combining mirrors to correct aberrations in the anamorphic optical system.
Claim 13
Dependent Claim
76 words
A source of radiation for use in printing on a recording medium, said source comprising: at least one phased array laser diode having near and far field radiation distributions; and an optical system which is telecentric in at least one azimuth for providing an image of said near field distribution from said phased array laser diode substantially on the medium and for imaging said far field radiation distribution from said phased array laser diode at infinity.
Claim 14
Dependent Claim
76 words
A source of radiation for use in printing on a recording medium, said source comprising: at least one phased array laser diode having near and far field radiation distributions; and an optical system which is telecentric in at least one azimuth for providing an image of said near field distribution from said phased array laser diode substantially on the medium and for imaging said far field radiation distribution from said phased array laser diode at infinity.
References Cited (Backward Citations)
US4384297A
Cited
US4403235A
Cited
US4445125A
Cited
US4538895A
Cited
US4744073A
Cited
US4786918A
Cited
US4743091A
Cited
US4806951A
Cited
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| 3.5 Years (Year 4) | 1995-11-03 | 1996-05-04 | 1996-11-03 | $2000.00 | Window Closed / Lapsed |
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