US5844723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser diode assembly including a carrier-mounted crossed pair of cylindrical microlenses
Assignee: Blue Sky Research Inc
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Filing: 1997-04-11
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Granted: 1998-12-01
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Expires: 2017-04-11
Abstract
Abstract Laser diode/cylindrical microlens assembly including a crossed-pair of passively aligned cylindrical microlenses attached to a substrate on which is mounted a laser diode chip. The microlenses are mounted in an "aplanatic" configuration with their flat surfaces facing the emitting facet of the diode, which arrangement provides for passive alignment and possible automated mounting, but requires no additional lenses for astigmatism correction. The crossed pair of lenses can collimate or focus the laser diode beam, for example focusing into a single mode fiber.
Inventors
- 👤 James J. Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:46
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B19/00; G02B19/0004; G02B19/0009; G02B19/0014; G02B19/0033; G02B19/0047; G02B19/0052; G02B27/00; G02B27/09; G02B27/0938; G02B27/095; G02B27/0955; G02B27/0966; G02B3/00; G02B3/02; G02B3/06; H; H01; H01S; H01S5/00; H01S5/40; H01S5/4025; G02B6/4206
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
59 words
An optical assembly comprising: a substrate having mounted thereon a laser source; a first microlens disposed and passively aligned on said substrate; and a second microlens further disposed and passively aligned on said substrate, said second microlens disposed substantially orthogonally to said first microlens; the planar surfaces of said first and second microlenses being oriented toward said laser source.
Claim 2
Dependent Claim
59 words
An optical assembly comprising: a substrate having mounted thereon a laser source; a first microlens disposed and passively aligned on said substrate; and a second microlens further disposed and passively aligned on said substrate, said second microlens disposed substantially orthogonally to said first microlens; the planar surfaces of said first and second microlenses being oriented toward said laser source.
Claim 3
Dependent Claim
38 words
The optical assembly of claim 1 wherein at least one of said first microlens and said second microlens is a cylindrical microlens whose optical performance is further characterized by being insensitive to position relative to the laser diode.
Claim 4
Dependent Claim
15 words
The optical assembly of claim 1 wherein said laser source further comprises a laser diode.
Claim 5
Dependent Claim
41 words
The optical assembly of claim 1 wherein said first microlens and said second microlens provide means for astigmatism correction, said means for astigmatism correction having the property of not requiring lenses in addition to said first microlens and said second microlens.
Claim 6
Dependent Claim
10 words
The optical assembly of claim 1 further providing focusing means.
Claim 7
Dependent Claim
10 words
The optical assembly of claim 1 further providing collimating means.
Claim 8
Dependent Claim
12 words
The optical assembly of claim 1 further comprising a macroscopic collimating lens.
Claim 9
Dependent Claim
12 words
The optical assembly of claim 1 further comprising a macroscopic focusing lens.
References Cited (Backward Citations)
US4253735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-30 | 2010-06-01 | 2010-12-01 | $7700.00 | Window Closed / Lapsed |