Patent EP0240277A2 successfully refreshed from Google Patents.
EP0240277A2
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Photosensor
Assignee: Sigma Inc
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Filing: 1987-03-30
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Granted: —
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Expires: 2007-03-30
Abstract
Abstract A photosensor has an optical fiber bundle (2) comprising a plurality of optical fibers (3), one end (2b) of which is spreadly arranged in a row opposite to a surface of an object to be detected and the other end (2a) of which is bundled in a small area corresponding to the photo-sensing portion (6a) of a photoelectric conversion element (6). Accordingly, an area, to be detected, of the object can be widely selected in spite of using a conventional phototransistor.
Inventors
- 👤 Tadamichi Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 23:14
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10712; G06K7/10722
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
A Photosensor for detecting a surface of an object,comprising a light-emitting element for emitting light rays and a photoelectric conversion element which receives light rays transmitted through the object to be detected or light rays reflected from the object thereby to generate an electric output signal corresponding to the intensity of light rays received by a photo-sensing portion of the photoelectric conversion element, characterized in that an optical fiber bundle (2) provided between the object (B) and the photoelectric conversion element (6) in such a manner that one end (2b) of the bundle (2) is widely arranged in a configuration corresponding to the object (B) and the other end (2a) of which is bundled to form a small light- emiting surface opposite to the photo-sensing portion (6a) of the photoelectric conversion element (6).
Claim 2
Dependent Claim
133 words
A Photosensor for detecting a surface of an object,comprising a light-emitting element for emitting light rays and a photoelectric conversion element which receives light rays transmitted through the object to be detected or light rays reflected from the object thereby to generate an electric output signal corresponding to the intensity of light rays received by a photo-sensing portion of the photoelectric conversion element, characterized in that an optical fiber bundle (2) provided between the object (B) and the photoelectric conversion element (6) in such a manner that one end (2b) of the bundle (2) is widely arranged in a configuration corresponding to the object (B) and the other end (2a) of which is bundled to form a small light- emiting surface opposite to the photo-sensing portion (6a) of the photoelectric conversion element (6).
Claim 3
Dependent Claim
47 words
A photosensor according to claim 1, wherein said one end (2b) of the optical fiber bundle (2) is flatly arranged in a straight row perpendicular to a direction in which the object (B) is transferred in order to detect a flat object such as a bank note.
Claim 4
Dependent Claim
40 words
A photosensor according to claim 1, wherein said one end (2b) of the optical fiber bundle (2) is arranged in an arc shape on a plane perpendicular to a direction in which the object (B) is transferred in order to
Claim 5
Dependent Claim
42 words
A photosensor according to claim 1, wherein the other end (2a) of the bundle (2) is get together into a cylindrical cover member (4) to form the small light-emitting surface correspoding to the photo-sensing portion (6a) of the photoelectric conversion element (6)..
Claim 6
Dependent Claim
61 words
A photosensor according to claim 4, wherein the other end (2b) of the bundle (2) is extended to an intermediate position of the cover member (4), the photo-sensing portion (6a) of the photoelectric convertion element (6) being inserted into the cover member (4) so as to oppose to the other end (2a) of the bundle (2) in the cover member (4).
References Cited (Backward Citations)
No citation records indexed.
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