EP0414281A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Portable laser diode scanning head
Assignee: Symbol Technologies LLC
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Filing: 1986-02-28
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Granted: —
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Expires: 2006-02-28
Abstract
Abstract A portable laser diode scanning head, aimable at each symbol to be read, emits and receives non-readily-visible laser light, and is equipped with a trigger-actuated aiming light arrangement for visually locating and tracking each symbol. A compact laser diode optical train and an optical folded path assembly, as well as an interchangeable component design are disclosed.
Inventors
- 👤 Boris Metlitsky
- 👤 Mark J. Krichever
- 👤 Jerome Swartz
- 👤 Eric F. Barkan
- 👤 Howard M. Shepard
- 👤 Edward Barkan
- 👤 Alexander M. Adelson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:55
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881; G06K7/10554; G06K7/10594; G06K7/10603; G06K7/10633; G06K2207/00; G06K2207/1011
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A bar code scanning device for reading bar code symbols, comprising: a) a first light source mounted in the device for generating a laser beam, said laser beam being directed along a path toward a bar code symbol located exterior of the device to result in reflected light traveling back to the device; b) a second light source mounted in the device for generating an aiming light beam to visually illuminate that portion of a reference plane on which light reflected from a symbol disposed on said portion may be read; c) a scanner in said device including a moving mirror assembly in said path driven by a motor, said scanner causing said laser beam and a field of view for said reflected light to move along a scan line across the bar code symbol; and d) a sensor mounted in said device detecting said reflected light via said moving mirror assembly and generating an electrical signal responsive to said reflected light.
Claim 2
Dependent Claim
162 words
A bar code scanning device for reading bar code symbols, comprising: a) a first light source mounted in the device for generating a laser beam, said laser beam being directed along a path toward a bar code symbol located exterior of the device to result in reflected light traveling back to the device; b) a second light source mounted in the device for generating an aiming light beam to visually illuminate that portion of a reference plane on which light reflected from a symbol disposed on said portion may be read; c) a scanner in said device including a moving mirror assembly in said path driven by a motor, said scanner causing said laser beam and a field of view for said reflected light to move along a scan line across the bar code symbol; and d) a sensor mounted in said device detecting said reflected light via said moving mirror assembly and generating an electrical signal responsive to said reflected light.
Claim 3
Dependent Claim
29 words
A device as defined in claim 1, wherein said second light source illuminates a circular spot region near the center of the symbol during the reading of the symbol.
Claim 4
Dependent Claim
18 words
A device as defined in claim 1, wherein said second light source is a single light emitting diode.
References Cited (Backward Citations)
No citation records indexed.
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