US5576752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Offset mounting of nonmonolithic multiwavelength lasers
Assignee: Xerox Corp
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Filing: 1993-11-22
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Granted: 1996-11-19
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Expires: 2013-11-22
Abstract
Abstract A nonmonolithic, multiple wavelength laser array having closely spaced lasing elements which are accurately spaced both in a plane perpendicular to the optical axes of the laser beams and along the optical axes. The laser array includes a plurality of lasing elements mounted on a high thermal conductivity spacer. The spacer has a front surface angled relative to the optical axes of the lasing elements, and parallel mounting surfaces. The mounting surfaces and front surfaces join to form front edges. The laser elements mount such that the front facet of each lasing element is aligned with an associated front edge. Beneficially, either the spacer is electrically conductive, or the spacer is coated with a layer of conductive material. The laser array can be used in a printer to offset the laser elements to correct for the wavelength dependency of the printer's optical system.
Inventors
- 👤 Gregory J. Kovacs
- 👤 R. Donald Yingling, Jr. deceased
- 👤 Tibor Fisli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/12; G02B26/123; B; B41; B41J; B41J2/00; B41J2/435; B41J2/47; B41J2/471; B41J2/473; H; H01; H01S; H01S5/00; H01S5/40; H01S5/4025
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
74 words
A laser mounting spacer, comprising: a thermally conductive base; and a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said laser mounting surfaces; wherein a width of said spacer controls the separation of said at least two laser mounting surfaces.
Claim 2
Dependent Claim
74 words
A laser mounting spacer, comprising: a thermally conductive base; and a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said laser mounting surfaces; wherein a width of said spacer controls the separation of said at least two laser mounting surfaces.
Claim 3
Dependent Claim
12 words
The spacer according to claim 1, wherein said spacer is electrically conductive.
Claim 4
Dependent Claim
21 words
The spacer according to claim 1, wherein an electrically conductive material is formed over said at least two laser mounting surfaces.
Claim 5
Dependent Claim
16 words
The spacer according to claim 1, wherein said at least two laser mounting surfaces are parallel.
Claim 6
Dependent Claim
12 words
The spacer according to claim 4, wherein said spacer is electrically conductive.
Claim 7
Dependent Claim
21 words
The spacer according to claim 5, wherein an electrically conductive material is formed over said at least two laser mounting surfaces.
Claim 8
Dependent Claim
102 words
An array of light emitting elements, comprising: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two mounting surfaces to form at least two front edges, and such that a plane of said front surface forms oblique angles with planes of said at least two mounting surfaces; and at least two light emitting elements of different wavelengths, each mounted on, and in thermal contact with, an associated one of said at least two mounting surfaces; wherein a width of said spacer controls a separation of said laser mounting surfaces.
Claim 9
Dependent Claim
102 words
An array of light emitting elements, comprising: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two mounting surfaces to form at least two front edges, and such that a plane of said front surface forms oblique angles with planes of said at least two mounting surfaces; and at least two light emitting elements of different wavelengths, each mounted on, and in thermal contact with, an associated one of said at least two mounting surfaces; wherein a width of said spacer controls a separation of said laser mounting surfaces.
Claim 10
Dependent Claim
14 words
The array according to claim 7, wherein said light emitting elements are laser elements.
Claim 11
Dependent Claim
16 words
The array according to claim 7, wherein said at least two laser mounting surfaces are parallel.
Claim 12
Dependent Claim
14 words
The array according to claim 9, wherein said light emitting elements are laser elements.
Claim 13
Dependent Claim
120 words
A laser array, comprising: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said at least two laser mounting surfaces; and at least two laser light emitting elements of different wavelengths, each mounted on, and in thermal contact with, an associated one of said at least two laser mounting surfaces such that said laser light emitting elements are each mounted adjacent an associated front edge; wherein a width of said spacer controls a separation of said at least two laser mounting surfaces.
Claim 14
Dependent Claim
120 words
A laser array, comprising: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said at least two laser mounting surfaces; and at least two laser light emitting elements of different wavelengths, each mounted on, and in thermal contact with, an associated one of said at least two laser mounting surfaces such that said laser light emitting elements are each mounted adjacent an associated front edge; wherein a width of said spacer controls a separation of said at least two laser mounting surfaces.
Claim 15
Dependent Claim
16 words
The array according to claim 11, wherein said at least two laser mounting surfaces are parallel.
Claim 16
Independent Claim
178 words
An apparatus having an image plane, comprising: a laser array having: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said laser mounting surfaces; and at least two laser light emitting elements which emit laser beams of dissimilar wavelengths, each of said at least two laser light emitting elements mounted on, and in thermal contact with, an associated one of said at least two surfaces such that the front of each of said laser light emitting elements is adjacent a front edge; and a wavelength dependent optical system receiving the laser light beams from said at least two laser light emitting elements, said optical system directing said laser light beams onto the image plane; wherein said oblique angle is such that the laser light emitting elements are offset so as to compensate for the wavelength dependency of said optical system.
Claim 17
Independent Claim
178 words
An apparatus having an image plane, comprising: a laser array having: a thermally conductive base; a thermally conductive spacer protruding from said base and having a front surface which joins with at least two laser mounting surfaces to form at least two front edges such that a plane of said front surface forms oblique angles with planes of said laser mounting surfaces; and at least two laser light emitting elements which emit laser beams of dissimilar wavelengths, each of said at least two laser light emitting elements mounted on, and in thermal contact with, an associated one of said at least two surfaces such that the front of each of said laser light emitting elements is adjacent a front edge; and a wavelength dependent optical system receiving the laser light beams from said at least two laser light emitting elements, said optical system directing said laser light beams onto the image plane; wherein said oblique angle is such that the laser light emitting elements are offset so as to compensate for the wavelength dependency of said optical system.
Claim 18
Dependent Claim
12 words
The apparatus of claim 13, wherein said apparatus is a xerographic printer.
Claim 19
Dependent Claim
17 words
The apparatus of claim 14, wherein said wavelength dependent optical system includes a polygon raster output scanner.
Claim 20
Dependent Claim
15 words
The apparatus of claim 13, wherein said at least two laser mounting surfaces are parallel.
Claim 21
Dependent Claim
17 words
The apparatus of claim 16, wherein said wavelength dependent optical system includes a polygon raster output scanner.
Claim 22
Dependent Claim
12 words
The apparatus of claim 17, wherein said apparatus is a xerographic printer.
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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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |