EP0465768A2
Expired / Lapsed
EP
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Contact type line image sensor
Assignee: Mitsubishi Electric Corp
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Filing: 1991-03-27
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Granted: —
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Expires: 2011-03-27
Abstract
Abstract A contact type image sensor provided with a case (12) wherein a read space (22) subject to damage by dust and a light source space (21) less damaged by dust are completely separated from each other, and the light source space (21) is formed with a reflecting mirror surface (13) for effectively guiding light from the light source (5) to an original read surface (4), whereby a uniform read image is obtained by the enhancement of original read performance without occurrence of deterioration in the quality of the image caused by dust.
Inventors
- 👤 Hiromi c/o Mitsubishi Denki K.K. Comm. Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:11
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031; H04N1/0314; H04N1/0318; H04N2201/00; H04N2201/024; H04N2201/028; H04N2201/03; H04N2201/031; H04N2201/03104; H04N2201/03108; H04N2201/03112; H04N2201/03116; H04N2201/0312; H04N2201/03125; H04N2201/03129; H04N2201/03141; H04N2201/03145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
A contact type line image sensor, comprising: a case (12) having a light source space (21) and a separate image reading space (22) located therewithin: a transparent plate (3) mounted at one end of said case (12) and having a read surface (4) from which original image information is read from an original document (1) pressed against said read surface (4); a light source (5) and a reflecting mirror surface (13) provided within said light source space (21), said reflecting mirror surface (13) reflecting light from said light source (5) to said read surface (4) of said transparent plate (3); an IC sensor element (7) and a rod lens array (6) provided within said image reading space (22), said rod lens array (6) focussing light from said read surface (4) onto said IC sensor element (7) for converting light image information into electrical image information; and a partitioning wall (23) constituting a barrier between said light source space (21) and said image reading space (22) formed within said case (12).
Claim 2
Dependent Claim
62 words
A contact type line image sensor according to claim 1, wherein said light source (5) and said IC sensor element (7) are mounted on a single substrate (8) which is mounted at an end of said case (12) opposite said one end, said transparent plate (3) and said single substrate (8) forming a seal for sealing the interior of said case (12).
Claim 3
Dependent Claim
19 words
A contact type line image sensor according to claim 2, wherein said transparent plate (3) is made of glass.
Claim 4
Dependent Claim
29 words
A contact type line image sensor according to claim 2, wherein said single substrate (8) includes a wiring pattern connected to an external connector (10) of said image sensor.
Claim 5
Dependent Claim
44 words
A contact type line image sensor according to any one of the claims 1 - 4, wherein said partitioning wall (23) includes a light guide for condensing light from said reflecting mirror surface (13) to said read surface (4) of said transparent plate (3).
Claim 6
Dependent Claim
19 words
A contact type line image sensor according to claim 5, wherein said light guide comprises an acrylic plate (14).
Claim 7
Dependent Claim
23 words
A contact type line image sensor according to claim 6, wherein said acrylic plate (14) has a substantially circular cross section (Fig. 3).
Claim 8
Dependent Claim
21 words
A contact type line image sensor according to claim 5, wherein said light guide comprises a glass rod (18) (Fig. 4).
Claim 9
Dependent Claim
26 words
A contact type line image sensor according to any one of the claims 1 - 8, wherein said reflecting mirror surface (13) is concave in shape.
Claim 10
Dependent Claim
26 words
A contact type line image sensor according to any one of the claims 1 - 8, wherein said reflecting mirror surface (13) is flat (Fig. 6).
References Cited (Backward Citations)
No citation records indexed.
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