US5004905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact type image sensor with a fiber array coated in part with an absorber
Assignee: Sharp Corp
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Filing: 1989-11-08
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Granted: 1991-04-02
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Expires: 2009-11-08
Abstract
Abstract A contact type image sensor comprising a light-detecting element array formed on a substrate, a light source for irradiating an original to be read, and an optical fiber array disposed between said light-detecting element array and said original to be read, said optical fiber array being formed by laminating an optical fiber array member that is composed of optical fibers not coated with an absorber on an optical fiber array member that is composed of optical fibers coated with an absorber, said optical fibers being disposed between said light-detecting element array and said original to be read, and said light source being disposed at the light emission side of said optical fiber array, thereby attaining a precise irradiation of an original with light from a light source and reliably shuts off the leakage to maintain excellent resolution characteristics of the sensor.
Inventors
- 👤 Atsushi Yoshinouchi
- 👤 Masataka Itoh
- 👤 Shuhei Tsuchimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:13
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/02845; H04N1/02865; H04N1/03; H04N1/031; H04N1/0311; H04N1/0312; H04N1/0315; H04N1/0316
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
123 words
A contact type image sensor comprising: a light-detecting element array formed on a substrate, a light source for irradiating an original to be read, and an optical fiber array disposed between said light-detecting element array and said original to be read, said optical fiber array including an optical fiber array member that is composed of optical fibers not coated with an absorber and an optical fiber array member that is composed of optical fibers coated with an absorber, said optical fiber array being disposed between said light-detecting element array and said original to be read, and said light source being disposed to direct light onto said original from which it is then reflected via said optical fiber array to said light-detecting element array.
Claim 2
Dependent Claim
123 words
A contact type image sensor comprising: a light-detecting element array formed on a substrate, a light source for irradiating an original to be read, and an optical fiber array disposed between said light-detecting element array and said original to be read, said optical fiber array including an optical fiber array member that is composed of optical fibers not coated with an absorber and an optical fiber array member that is composed of optical fibers coated with an absorber, said optical fiber array being disposed between said light-detecting element array and said original to be read, and said light source being disposed to direct light onto said original from which it is then reflected via said optical fiber array to said light-detecting element array.
Claim 3
Dependent Claim
73 words
A contact type image sensor according to claim 1, wherein: said light-detecting element array is disposed proximate an end of said substrate, a light receiving surface of said light-detecting element array and a light emission surface of said optical fiber array face are directed towards each other, and said light source is disposed in a space adjacent said end of said substrate, whereby said original is irradiated with light from said light source.
Claim 4
Dependent Claim
31 words
A contact type image sensor according to claim 1 or 2, wherein the diameter of said optical fibers is 40% or less of the resolution pitch of said light-detecting element array.
Claim 5
Dependent Claim
24 words
A contact type image sensor as in claim 1 further comprising a light-shielding member disposed between said light source and light detecting element array.
Claim 6
Dependent Claim
113 words
An image sensor comprising: a light source disposed to illuminate an original image to be sensed; an optical fiber array including two serially arranged subarrays, a first subarray having optical fibers not coated with a light absorber and disposed to let light from said source pass obliquely therethrough and to accept via its fiber ends light reflected from the original image, and a second subarray having optical fibers caoted with a light absorber and passing said reflected light via the optical fibers of the second subarray as received from the first subarray fibers; and a light-detector array disposed to accept said reflected light as it is output from said second subarray optical fibers.
Claim 7
Dependent Claim
113 words
An image sensor comprising: a light source disposed to illuminate an original image to be sensed; an optical fiber array including two serially arranged subarrays, a first subarray having optical fibers not coated with a light absorber and disposed to let light from said source pass obliquely therethrough and to accept via its fiber ends light reflected from the original image, and a second subarray having optical fibers caoted with a light absorber and passing said reflected light via the optical fibers of the second subarray as received from the first subarray fibers; and a light-detector array disposed to accept said reflected light as it is output from said second subarray optical fibers.
Claim 8
Dependent Claim
27 words
An image sensor as in claim 5 wherein the diameter of said optical fibers is about 40% or less than the resolution pitch of said light-detector array.
Claim 9
Dependent Claim
53 words
An image sensor as in claim 5 wherein said light-detector array is disposed on and proximate an end of a substrate with electrical connection wires extending away from one side of the detector array and with said light source being disposed on the other opposite side of the detector array from said wires.
Claim 10
Dependent Claim
22 words
An image sensor as in claim 5 further comprising a light shield disposed between the light source and the light detector array.
Claim 11
Dependent Claim
31 words
An image sensor as in claim 7 further comprising a light shield disposed between said light source and said end of the substrate on which said light detector array is disposed.
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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) | 1994-04-01 | 1994-10-01 | 1995-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-01 | 1998-10-01 | 1999-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-01 | 2002-10-01 | 2003-04-02 | $7700.00 | Window Closed / Lapsed |