Patent EP0133278A2 successfully refreshed from Google Patents.
Patent EP0238067A2 successfully refreshed from Google Patents.
EP0238067A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical information reading apparatus
Assignee: Denso Corp
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Filing: 1987-03-18
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Granted: —
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Expires: 2007-03-18
Abstract
Abstract Apparatus for reading optical information such as a bar code and including a handheld reader containing a reading sensor (8). An image of the optical information is imaged by light reflected from the optical information, via a reflecting mirror (5), a lens (6) and a diaphram member (7), onto the reading sensor (8) so that the image is converted into an electric signal. A pair of LEDs (10, 11) are disposed on both sides of the image sensor (8) so that the images thereof are imaged near the optical information by light from the LEDs (10, 11) through the diaphram member (7), the lens (6) and the reflecting mirror (5). The LEDs (10, 11) and reading sensor (8) are controlled so that the LEDs (10, 11) are disabled from emitting light while the reading sensor (8) performs the reading operation of the optical information. Instead of LEDs (10, 11), optical fibers can be used.
Inventors
- 👤 Takesi Matusima
- 👤 Atutosi Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 01:28
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/88; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881; G06K2207/00; G06K2207/1018
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
154 words
Apparatus for reading optical information, which reflects light comprising: a casing having an opening for facing said optical information; optical means, disposed in said casing, toward said optical information for imaging at a predetermined reading position in said casing an image of said optical information by light reflected from said optical information when said opening faces said optical information for a reading thereof; reading sensor means, disposed at said predetermined reading position and having a light receiving plane, for converting said image of said optical information into an electrical signal; and light emitting means, positioned in said casing and on substantially the same plane as said light receiving plane of said reading sensor means, for causing said optical information to be in focus relative to said reading sensor means by emitting light through at least part of said optical means to effect focus of an image of said emitted light near said optical information.
Claim 2
Dependent Claim
154 words
Apparatus for reading optical information, which reflects light comprising: a casing having an opening for facing said optical information; optical means, disposed in said casing, toward said optical information for imaging at a predetermined reading position in said casing an image of said optical information by light reflected from said optical information when said opening faces said optical information for a reading thereof; reading sensor means, disposed at said predetermined reading position and having a light receiving plane, for converting said image of said optical information into an electrical signal; and light emitting means, positioned in said casing and on substantially the same plane as said light receiving plane of said reading sensor means, for causing said optical information to be in focus relative to said reading sensor means by emitting light through at least part of said optical means to effect focus of an image of said emitted light near said optical information.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1, wherein said light emitting means includes at least one light emitter positioned adjacent said reading sensor means.
Claim 4
Dependent Claim
29 words
Apparatus according to claim 1, wherein said light emitting means comprises a pair of light emitters positioned on both sides of a reading portion of said reading sensor means.
Claim 5
Dependent Claim
31 words
Apparatus according to claim 3, wherein said reading sensor means comprises a one-dimensional image sensor and said pair of light emitters are positioned on a scanning line of said image sensor.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 4, wherein said pair of light emitters are LEDs.
Claim 7
Dependent Claim
20 words
Apparatus according to claim 5, further comprising means for illuminating said optical information when said opening faces said optical information.
Claim 8
Dependent Claim
20 words
Apparatus according to claim 1, further comprising means for illuminating said optical information when said opening faces said optical information.
Claim 9
Dependent Claim
36 words
Apparatus according to claim 7, wherein said light emitting means comprises optical fibers for leading light from said illuminating means and for emitting light from both sides of a reading portion of said reading sensor means.
Claim 10
Dependent Claim
28 words
Apparatus according to claim 8, wherein said reading sensor comprises a one-dimensional image sensor and said optical fibers emits light from a scanning line of said image sensor.
Claim 11
Dependent Claim
35 words
Apparatus according to claim 1, further comprising means for disabling said light emitting means from emitting light at least while said reading sensor means converts said images of said optical information into said electrical signal.
Claim 12
Dependent Claim
30 words
Apparatus according to claim 10, wherein said light emitting means comprises a pair of light emitting parts positioned on both sides of a reading portion of said reading sensor means.
Claim 13
Dependent Claim
32 words
Apparatus according to claim 11, wherein said reading sensor means comprises a one-dimensional image sensor and said pair of light emitting parts are positioned on a scanning line of said image sensor.
Claim 14
Dependent Claim
21 words
Apparatus according to claim 10, further comprising a switch manually operated for starting the converting operation of said reading sensor means.
Claim 15
Dependent Claim
175 words
Apparatus for reading optical information, which reflects light comprising: a casing having an opening for facing said optical information; optical means, disposed in said casing, toward said optical information for imaging at a predetermined reading position in said casing an image of said optical information by light reflected from said optical information when said opening faces said optical information for a reading thereof; reading sensor means, disposed at said predetermined reading position and having a light receiving plane, for converting said image of said optical information into an electrical signal; and light emitting means, positioned in said casing on opposite ends of a scanning line of said reading sensor means and on substantially the same plane as said light receiving plane for positioning said optical information image within be said scanning line and for causing said optical information to be in focus relative to said scanning line by emitting light through at least part of said optical means to effect focus of an image of said emitted light at opposite ends of said optical information.
Claim 16
Dependent Claim
175 words
Apparatus for reading optical information, which reflects light comprising: a casing having an opening for facing said optical information; optical means, disposed in said casing, toward said optical information for imaging at a predetermined reading position in said casing an image of said optical information by light reflected from said optical information when said opening faces said optical information for a reading thereof; reading sensor means, disposed at said predetermined reading position and having a light receiving plane, for converting said image of said optical information into an electrical signal; and light emitting means, positioned in said casing on opposite ends of a scanning line of said reading sensor means and on substantially the same plane as said light receiving plane for positioning said optical information image within be said scanning line and for causing said optical information to be in focus relative to said scanning line by emitting light through at least part of said optical means to effect focus of an image of said emitted light at opposite ends of said optical information.
References Cited (Backward Citations)
No citation records indexed.
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