US5198648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Code sensor with multi-faceted reflector for sensing plural image distances
Assignee: Eastman Kodak Co
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Filing: 1990-12-27
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Granted: 1993-03-30
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Expires: 2010-12-27
Abstract
Abstract A bar code scanner having a lens, a reflector, a sensor, and a detection unit. The lens is arranged to focus an image of a bar code to be scanned along an image path. The reflector is angled obliquely to the image path so as to reflect images at an angle to the image path. The reflector has reflector surface shaped so as to provide a plurality of reflected images of the scanned bar code, with one of the reflected image being an in-focus image and a remainder of the reflected images being out-of-focus images. The sensor is in the image path and simultaneously senses the plurality of reflected images and provides a sensor output signal corresponding to the sensed images. The detection unit is coupled to the sensor and decodes the sensor output signal and provides a bar code output signal that corresponds to the scanned bar code.
Inventors
- 👤 Robert H. Hibbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:10
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10831; G06K7/10792; G06K7/10801; G06K7/10811; G06K2207/00; G06K2207/1013
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
152 words
A bar code scanner comprising: a lens arranged to focus an image of a bar code to be scanned along an image path; a reflector in the image path and angled obliquely to the image path so as to reflect images at an angle to the image path, said reflector having a reflector surface shaped so as to provide a plurality of reflected images of the scanned bar code, with one of said reflected images being an in-focus image and a remainder of said reflected images being out-of-focus images; a single linear array sensor in the image path onto which said images are reflected and which simultaneously senses the plurality of reflected images and provides a sensor output signal corresponding to the sensed images; and a detection unit coupled to the sensor which decodes the sensor output signal and provides a bar code output signal that corresponds to the scanned bar code.
Claim 2
Dependent Claim
152 words
A bar code scanner comprising: a lens arranged to focus an image of a bar code to be scanned along an image path; a reflector in the image path and angled obliquely to the image path so as to reflect images at an angle to the image path, said reflector having a reflector surface shaped so as to provide a plurality of reflected images of the scanned bar code, with one of said reflected images being an in-focus image and a remainder of said reflected images being out-of-focus images; a single linear array sensor in the image path onto which said images are reflected and which simultaneously senses the plurality of reflected images and provides a sensor output signal corresponding to the sensed images; and a detection unit coupled to the sensor which decodes the sensor output signal and provides a bar code output signal that corresponds to the scanned bar code.
Claim 3
Dependent Claim
21 words
The bar code scanner of claim 1, wherein the reflector surface is shaped so as to comprise a plurality of facets.
Claim 4
Dependent Claim
26 words
The bar code scanner of claim 2, wherein the lens is positioned on the image path between the bar code to be scanned and the reflector.
Claim 5
Dependent Claim
25 words
The bar code scanner of claim 2, wherein the lens is positioned on the image path between the reflector and the single linear array sensor.
Claim 6
Dependent Claim
17 words
The bar code scanner of claim 1, wherein the single linear array sensor is a CCD sensor.
Claim 7
Dependent Claim
38 words
The bar code scanner of claim 1, wherein the detection unit includes means for filtering the in-focus image from the out-of-focus images contained in the sensor output signal and producing the code output signal from the in-focus image.
Claim 8
Dependent Claim
30 words
The bar code scanner of claim 1, wherein the reflector surface is smoothly curved so as to provide the in-focus and out-of-focus reflected images to said single linear array sensor.
Claim 9
Dependent Claim
31 words
The bar code scanner of claim 1, wherein the reflector surface is shaped so as to provide the in-focus and the out-of-focus reflected images superimposed on the single linear array sensor.
Claim 10
Independent Claim
74 words
A method of scanning a code comprising: simultaneously focusing a plurality of images of the code onto a single linear array sensor, said plurality of images containing an in-focus image of the code and a plurality of out-of-focus images; producing a single linear array sensor output signal corresponding to the plurality of images focused onto said sensor; determining the in-focus image from the sensor output signal; and decoding the in-focus image to extract information.
Claim 11
Independent Claim
74 words
A method of scanning a code comprising: simultaneously focusing a plurality of images of the code onto a single linear array sensor, said plurality of images containing an in-focus image of the code and a plurality of out-of-focus images; producing a single linear array sensor output signal corresponding to the plurality of images focused onto said sensor; determining the in-focus image from the sensor output signal; and decoding the in-focus image to extract information.
Claim 12
Dependent Claim
31 words
The method of claim 9, wherein said step of simultaneously focusing includes the step of simultaneously reflecting separate images of the code from a reflector onto said single linear array sensor.
Claim 13
Dependent Claim
35 words
The method of claim 10, wherein the reflector is a faceted reflector and the step of simultaneously reflecting includes the step of reflecting a plurality of images from a single image with the faceted reflector.
Claim 14
Dependent Claim
24 words
The method of claim 10, wherein the separate images are superimposed by the reflector and the single linear array sensor receives said superimposed images.
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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) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |