Patent EP0438104A2 successfully refreshed from Google Patents.
EP0438104A2
Expired / Lapsed
EP
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Image reading device
Assignee: Panasonic Holdings Corp
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Filing: 1991-01-15
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Granted: —
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Expires: 2011-01-15
Abstract
Abstract An image reading device includes: a light emitting element (50) for irradiating light on an image surface; a light recipient element (10) for receiving image information by reflected light from the image surface; and light waveguide passages (31) provided between the light emitting element and the image surface and between the light recipient element and the image surface, respectively so that at least the light waveguide passage for the light emitting element is formed so as to expand at an end surface thereof on an image surface side wider than at an end surface thereof on a light emitting side.
Inventors
- 👤 Kenichiro Suetsugu
- 👤 Tetsuo Fukushima
- 👤 Tokuhito Hamane
- 👤 Junji Ikeda
- 👤 Yukio Maeda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; H04N1/02835; H04N1/02845; H04N1/02855; H04N1/00795; H04N1/02865; H04N1/03; H04N1/031; H04N1/0311; H04N1/0312; H04N1/0314
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
An image reading device comprising: a light emitting element (50) for irradiating light on an image surface; a light recipient element (10) for receiving image information by reflected light from the image surface; and light waveguide passages (31) provided between the light emitting element and the image surface and between the light recipient element and the image surface, respectively so that at least the light waveguide passage for the light emitting element is formed so as to expand at an end surface thereof on an image surface side wider than at an end surface thereof on a light emitting side.
Claim 2
Dependent Claim
100 words
The image reading device as claimed in Claim 1, wherein a plurality sets of the light emitting element and the light recipient element are arranged alternately in a lengthwise direction of the image reading device, and the respective light waveguide passages for each set of the light emitting element and the light recipient element arranged at an interval are formed so as to expand at the respective end surfaces on sides of the light emitting element and the light recipient element, respectively and further, the light waveguide passages of adjacent sets are formed do as to communicate with each other.
References Cited (Backward Citations)
No citation records indexed.
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