Patent US5550852A successfully refreshed from Google Patents.
US5550852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser package with reversed laser diode
Assignee: II VI Laser Enterprise GmbH
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Filing: 1995-02-10
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Granted: 1996-08-27
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Expires: 2015-02-10
Abstract
Abstract A laser package includes a housing and a subassembly to which the critical components of the laser package are mounted. The subassembly is structured to preserve component alignment even in the presence of thermal excursions by ensuring that any movement which might occur effects all the components in a way to preserve alignment. The subassembly is easily removable from the housing and thus permits replacement if a failure should occur. A reverse diode is included to provide a path for reverse currents which otherwise would be damaging to the active laser diode.
Inventors
- 👤 Rushikesh M. Patel
- 👤 Henri Nahapetiance
- 👤 Rajiv Agarwal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:40
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/04; H01S5/042; H01S5/02; H01S5/022; H01S5/0239; H01S5/06; H01S5/068; H01S5/06825; H01S5/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A laser diode package including a first laser diode having an emitting surface and a power source for applying a voltage to said diode for generating light from said emitting surface, said package also including a second diode connected electrically to said power source in parallel with said first laser diode and in a direction reversed from that of said first laser diode for providing a path for currents in said reversed direction which would otherwise damage said first laser diode.
Claim 2
Dependent Claim
81 words
A laser diode package including a first laser diode having an emitting surface and a power source for applying a voltage to said diode for generating light from said emitting surface, said package also including a second diode connected electrically to said power source in parallel with said first laser diode and in a direction reversed from that of said first laser diode for providing a path for currents in said reversed direction which would otherwise damage said first laser diode.
Claim 3
Dependent Claim
48 words
A package as in claim 1 wherein said second diode is a laser diode which is not operative optically but is an electrically operative diode fabricated at the same time as said first laser diode so as to have electrical properties like those of said first laser diode.
Claim 4
Dependent Claim
24 words
A package as in claim 1 also including an optical fiber having an end aligned with said emitting surface of said first laser diode.
Claim 5
Dependent Claim
20 words
A package as in claim 3 also including a cylindrical lens mounted between said emitting surface and said optical fiber.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-27 | 2000-02-26 | 2000-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-27 | 2004-02-26 | 2004-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-27 | 2008-02-26 | 2008-08-27 | $7700.00 | Window Closed / Lapsed |