Patent US5694256A successfully refreshed from Google Patents.
US5694256A
Expired / Lapsed
US
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Optical reading device
Assignee: Eschenbach Optik GmbH and Co
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Filing: 1994-07-28
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Granted: 1997-12-02
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Expires: 2014-07-28
Abstract
Abstract An optical reading device is provided with a rod-shaped lens body having a first and a second pair of side surfaces extending in the longitudinal direction of the rod and, in pairs, disposed opposite of one another. At least one side surface of the first pair of side surfaces is configured as curved surface which is curved convexly in the directions of both the length and the width of the rod. At least one side surface of the second pair of side surfaces has an additional curved surface. In this manner, a magnifying lens with two different magnification options is created.
Inventors
- 👤 Kurt Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:52
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
An optical reading device having a rod-shaped lens body, the lens body having a length extending in a longitudinal direction, and a width extending in a direction transverse to the longitudinal direction, the lens body comprising: a first pair of side surfaces extending in the longitudinal direction of the lens body and being disposed opposite one another, at least one of the side surfaces being curved convexly in directions of both the length and width of the lens body; and a second pair of side surfaces connected to said first pair of side surfaces, extending in the longitudinal direction of the lens body, and being disposed opposite one another, at least one of the side surfaces of the second pair of side surfaces having a curved portion.
Claim 2
Dependent Claim
127 words
An optical reading device having a rod-shaped lens body, the lens body having a length extending in a longitudinal direction, and a width extending in a direction transverse to the longitudinal direction, the lens body comprising: a first pair of side surfaces extending in the longitudinal direction of the lens body and being disposed opposite one another, at least one of the side surfaces being curved convexly in directions of both the length and width of the lens body; and a second pair of side surfaces connected to said first pair of side surfaces, extending in the longitudinal direction of the lens body, and being disposed opposite one another, at least one of the side surfaces of the second pair of side surfaces having a curved portion.
Claim 3
Dependent Claim
38 words
The optical reading device defined in claim 1, wherein the curved side surface of the first pair of side surfaces is spherically curved in a center region thereof, and aspherically curved in edge regions adjoining the center region.
Claim 4
Dependent Claim
35 words
The optical reading device defined in claim 1, wherein the first pair of side surfaces define a top side and an underside, respectively, of the body, said top side and said underside being equally curved.
Claim 5
Dependent Claim
17 words
The optical reading device defined in claim 1, wherein the curved portion comprises a spherical round lens.
Claim 6
Dependent Claim
17 words
The optical reading device defined in claim 1, wherein the curved portion comprises an aspherical, strip-shaped lens.
Claim 7
Dependent Claim
22 words
The optical reading device defined in claim 5, wherein the strip-shaped lens extends essentially over the entire length of the lens body.
Claim 8
Dependent Claim
26 words
The optical reading device defined in claim 1, wherein the first pair of side surfaces has a different magnification than the second pair of side surfaces.
Claim 9
Dependent Claim
29 words
The optical reading device defined in claim 1, wherein the lens body has a rod width to rod length ratio in the range of about 1:3 to about 1:10.
Claim 10
Dependent Claim
24 words
The optical reading device defined in claim 1, wherein the lens body further comprises a handle attached thereto and extending in the longitudinal direction.
Claim 11
Dependent Claim
16 words
The optical reading device defined in claim 1, wherein the lens body comprises an injection-molded plastic.
Claim 12
Dependent Claim
15 words
The optical reading device defined in claim 2, wherein the plastic comprises polymethacrylic acid ester.
Claim 13
Dependent Claim
15 words
The optical reading device defined in claim 10, wherein the lens body comprises one piece.
Claim 14
Dependent Claim
15 words
The optical reading device defined in claim 10, wherein the lens body comprises multiple layers.
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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) | 2000-12-01 | 2001-06-02 | 2001-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-01 | 2005-06-02 | 2005-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-01 | 2009-06-02 | 2009-12-02 | $7700.00 | Window Closed / Lapsed |