Patent US6053409A successfully refreshed from Google Patents.
US6053409A
Expired / Lapsed
US
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Dynamic focusing apparatus for an optical imaging system using a deformable mirror
Assignee: Datalogic Automation Inc
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Filing: 1997-06-24
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Granted: 2000-04-25
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Expires: 2017-06-24
Abstract
Abstract A focus changing apparatus for an optical scanner which increases the depth of the field of the optical scanner. The focus changing apparatus is optically located between a laser source and a scan mirror and includes a plurality of alternating curved and flat facets. Alternatively, a piezoelectric deformable mirror may be optically located between the laser source and a flat faceted scan mirror to provide for increased depth of field of the optical scanner.
Inventors
- 👤 Thomas J. Brobst
- 👤 Edward I. Chaleff
- 👤 Kurt Hecht
- 👤 Michael L. Veksland
- 👤 Albert Wurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:21
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10831; G02; G02B; G02B26/00; G02B26/08; G02B26/0816; G02B26/0825; G02B5/00; G02B5/08; G02B5/09; G06K7/10792; G06K7/10801; G06K7/10811; G06K2207/00; G06K2207/1013
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
A scanner for use in reading coded symbologies located at various distances from the scanner, the scanner comprising: a distance sensing device for determining a distance between the scanner and a region to scan for said coded symbologies; means for illuminating said region; deformable mirror means for focusing light on said region in response to the determined distance; and means for detecting light reflected from said region.
Claim 2
Dependent Claim
67 words
A scanner for use in reading coded symbologies located at various distances from the scanner, the scanner comprising: a distance sensing device for determining a distance between the scanner and a region to scan for said coded symbologies; means for illuminating said region; deformable mirror means for focusing light on said region in response to the determined distance; and means for detecting light reflected from said region.
Claim 3
Dependent Claim
16 words
The scanner of claim 1 wherein said deformable mirror focuses light incident on said second region.
Claim 4
Dependent Claim
32 words
The scanner of claim 1 wherein said illuminating means produces an expansive light beam for illuminating said region and said region is an expansive region sufficient to contain an entire coded symbology.
Claim 5
Dependent Claim
16 words
The scanner of claim 3 wherein said deformable mirror focuses light reflected from said expansive region.
Claim 6
Dependent Claim
20 words
The scanner of claim 4 further including a second deformable mirror means for varying the magnification of said reflected light.
Claim 7
Dependent Claim
22 words
The scanner of claim 3 wherein the expansive light beam has a cross sectional area sufficient to illuminate an entire coded symbology.
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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) | 2003-04-25 | 2003-10-25 | 2004-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-25 | 2007-10-25 | 2008-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-25 | 2011-10-25 | 2012-04-25 | $7700.00 | Window Closed / Lapsed |