US5576897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-lens optical device for use in an optical scanner
Assignee: Tamarack Telecom Inc
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Filing: 1995-01-24
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Granted: 1996-11-19
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Expires: 2015-01-24
Abstract
Abstract A multi-lens optical device for use in an optical scanner including a lens holder having a viewing aperture, and a lens unit disposed in front of the viewing aperture, wherein the lens unit includes a lens holder, a plurality of lenses of different magnifying power respectively mounted on the lens holder, a reversible motor, and a reduction gearing driven by the reversible motor to move the lens holder, permitting one lens to be aligned with the viewing aperture for scanning.
Inventors
- 👤 Shih-Hung Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:34
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/14; G02B7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A multi-lens optical device for use in an optical scanner comprising: an image sensor holder having a viewing aperture; a lens unit disposed in front of said viewing aperture, wherein said lens unit comprises a lens holder and a plurality of lenses of different magnifying powers respectively mounted on said lens holder; a reversible motor; and a reduction gearing driven by said reversible motor; said lens holder being made of elongated shape having a dovetail groove matched with a dovetail tongue on a base frame, and a long side, fixedly mounted to the lens holder, having a rack meshed with said reduction gearing, whereby said lens holder is moved along said dovetail tongue by said reversible motor through said reduction gearing via said rack to let one lens at a time be aligned with said viewing aperture for scanning.
Claim 2
Dependent Claim
139 words
A multi-lens optical device for use in an optical scanner comprising: an image sensor holder having a viewing aperture; a lens unit disposed in front of said viewing aperture, wherein said lens unit comprises a lens holder and a plurality of lenses of different magnifying powers respectively mounted on said lens holder; a reversible motor; and a reduction gearing driven by said reversible motor; said lens holder being made of elongated shape having a dovetail groove matched with a dovetail tongue on a base frame, and a long side, fixedly mounted to the lens holder, having a rack meshed with said reduction gearing, whereby said lens holder is moved along said dovetail tongue by said reversible motor through said reduction gearing via said rack to let one lens at a time be aligned with said viewing aperture for scanning.
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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 |