Patent US3742225A successfully refreshed from Google Patents.
US3742225A
Expired / Lapsed
US
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Reader mechanism for optically discernible characters
Assignee: Zellweger Uster AG
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Filing: 1972-01-28
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Granted: 1973-06-26
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Expires: 1992-01-28
Abstract
Abstract A reader mechanism for optically discernible characters, especially characters associated with an article and applied thereat or thereto, wherein a transmitted beam linearly scans a reference plane and a received beam derived from a scanned character impinges upon a receiver which delivers an electrical output signal as a function of the light current of the received light beam. Two cylinder lens members are located at the region of the reference plane and extend parallel thereto and to the scanning direction. These two cylinder lens members each possessing a length sufficient for respectively operatively engaging with the transmitted light beam and the received light beam. One of the cylinder lens members is covered by a fine transmitted light beam and possesses a width which is less than that of the other cylinder lens member. This other cylinder lens member deflects light emanating from the reference plane or at a defined location before or after such reference plane to the receiver.
Inventors
- 👤 E Sick
- 👤 G Pinior
- 👤 J Plockl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:30
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10831; G06K7/10861; G06K7/10871; H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/029
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
165 words
A reader mechanism for optically discernible characters, especially characters associated with an article and applied thereat or thereto, wherein a transmitted light beam linearly scans a reference plane and a received light beam derived from a scanned character falls upon a receiver which delivers an electrical output signal as a function of the light current of the received light beam, the improvement comprising two cylinder lens members located at the region of the reference plane and extending substantially parallel thereto and in the character scanning direction, each of said two cylinder lens members possessing a length sufficient for respectively acting upon the transmitted light beam and the received light beam, one of said cylinder lens members being impinged with a fine transmitted light beam and possessing a width which is less than that of the other cylinder lens member, said other cylinder lens member deflecting light emanating from the reference plane or at a defined location before or after such reference plane to the receiver.
Claim 2
Dependent Claim
165 words
A reader mechanism for optically discernible characters, especially characters associated with an article and applied thereat or thereto, wherein a transmitted light beam linearly scans a reference plane and a received light beam derived from a scanned character falls upon a receiver which delivers an electrical output signal as a function of the light current of the received light beam, the improvement comprising two cylinder lens members located at the region of the reference plane and extending substantially parallel thereto and in the character scanning direction, each of said two cylinder lens members possessing a length sufficient for respectively acting upon the transmitted light beam and the received light beam, one of said cylinder lens members being impinged with a fine transmitted light beam and possessing a width which is less than that of the other cylinder lens member, said other cylinder lens member deflecting light emanating from the reference plane or at a defined location before or after such reference plane to the receiver.
Claim 3
Dependent Claim
24 words
The reader mechanism as defined in claim 1, wherein the ratio of the lens width of both cylinder lens members is greater than 1:3.
Claim 4
Dependent Claim
29 words
The reader mechanism as defined in claim 2, wherein the ratio of the lens width of both cylinder lens members is in a range of approximately 1:5 and 1:15.
Claim 5
Dependent Claim
55 words
The reader mechanism as defined in claim 1, wherein one of said lens members defines a transmitting cylinder lens member and the other lens member a receiving cylinder lens member, said transmitting cylinder lens member and said receiving cylinder lens member being assembled together into a structural unit at oppositely situated lengthwise extending abutting surfaces.
Claim 6
Dependent Claim
37 words
The reader mechanism as defined in claim 4, further including a layer which is non-permeable to light provided between the oppositely situated lengthwise extending surfaces of said transmitting cylinder lens member and said receiving cylinder lens member.
Claim 7
Dependent Claim
16 words
The reader mechanism as defined in claim 5, wherein said non-permeable layer comprises a light-absorbing layer.
Claim 8
Dependent Claim
33 words
The reader mechanism as defined in claim 1, wherein the focal point of the transmitting cylinder lens member is disposed centrally of the scanning movement approximately at the region of the reference plane.
Claim 9
Dependent Claim
31 words
The reader mechanism as defined in claim 1, wherein the focal point of the receiving cylinder lens member is disposed externally of a depth of focus region of the reference plane.
Claim 10
Dependent Claim
37 words
The reader mechanism as defined in claim 1, wherein selectively any one of the main plane of the transmitting cylinder lens member, the receiving cylinder lens member, or both, are inclined with respect to the reference plane.
Claim 11
Dependent Claim
37 words
The reader mechanism as defined in claim 9, wherein the angle of inclination of the main plane of the transmitting cylinder lens member with respect to the reference plane lies in a range of 10* to 30*.
Claim 12
Dependent Claim
33 words
The reader mechanism as defined in claim 10, wherein the angle of inclination of the main plane of the transmitting cylinder lens member with respect to the reference plane amounts to approximately 15*.
Claim 13
Dependent Claim
52 words
The reader mechanism as defined in claim 1, wherein the main plane of the transmitting cylinder lens member and the main plane of the receiving cylinder lens member are inclined with respect to one another in such a manner that the received light beam is broken away from the transmitted light beam.
Claim 14
Dependent Claim
39 words
The reader mechanism as defined in claim 1, wherein the angle of inclination between the main plane of the transmitting cylinder lens member and the main plane of the receiving cylinder lens member amounts to as much as 15*.
Claim 15
Dependent Claim
17 words
The reader mechanism as defined in claim 13, wherein saId angle of inclination approximately amounts to 5*.
Claim 16
Dependent Claim
18 words
The reader mechanism as defined in claim 1, wherein the transmitted light beam is derived from a laser.
References Cited (Backward Citations)
US1991670A
Cited
US3062965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |