US4467195A
Expired / Lapsed
US
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Information detecting apparatus
Assignee: Canon Inc
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Filing: 1983-02-07
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Granted: 1984-08-21
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Expires: 2003-02-07
Abstract
Abstract This specification discloses an original reading apparatus for converting information such as pictures and writings on an original surface into electrical signals for reading. The apparatus comprises a carriage for moving an original in a predetermined direction, an illuminating system for illuminating a narrow line on the original perpendicular to the direction of movement of the original, a photoelectric sensor including a plurality of photoelectric elements arrayed in the direction of the illuminated line and over the width of the original, and means for reading the signals provided on each photoelectric conversion surface in the fashion of time series. In the apparatus, the illuminating system and the photoelectric sensor are made integral to form a compact head, and the head can scan the original while being in intimate contact with the original to thereby produce information signals of high resolution.
Inventors
- 👤 Naoto Kawamura
- 👤 Kazuya Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:42
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/201; G02B3/00; G02B3/0006; G02B3/0037; G02B3/005; G02B3/0062; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10712; G06K7/10722; G06K7/10762; H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031; H04N1/46; H04N1/48; H04N1/486
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
146 words
Information detecting apparatus comprising: a linear light source; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction; a condensing optical system for condensing the light from said light source to illuminate a line on the surface of an original, said line being parallel to said major scanning direction; at least one layer of cylindrical lens array system including a plurality of cylindrical lens elements arrayed in a directed parallel to said major scanning direction to provide a plurality of separate light paths, each of said cylindrical lens elements having a major axis extending in a direction perpendicular to said major scanning direction, said cylindrical lens array system forming on the surface of said photoelectric sensor array an erect equal magnification image of the illuminated line; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 2
Dependent Claim
146 words
Information detecting apparatus comprising: a linear light source; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction; a condensing optical system for condensing the light from said light source to illuminate a line on the surface of an original, said line being parallel to said major scanning direction; at least one layer of cylindrical lens array system including a plurality of cylindrical lens elements arrayed in a directed parallel to said major scanning direction to provide a plurality of separate light paths, each of said cylindrical lens elements having a major axis extending in a direction perpendicular to said major scanning direction, said cylindrical lens array system forming on the surface of said photoelectric sensor array an erect equal magnification image of the illuminated line; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 3
Dependent Claim
43 words
Apparatus according to claim 1, further comprising a douser array disposed between said photoelectric sensor and the original and having the same pitch as that of said cylindrical lens array, each douser of each douser array being perpendicular to said major scanning direction.
Claim 4
Dependent Claim
24 words
Apparatus according to claim 1, wherein said condensing optical system is a cylindrical lens having its major axis parallel to said major scanning direction.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 1, wherein elements in at least a portion of said photoelectric sensor has a filter disposed on the light-receiving surface thereof for reading color information.
Claim 6
Dependent Claim
144 words
An information detecting apparatus, comprising: a transparent carrier having a first surface thereof opposed to an original; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction, said photoelectric sensor being mounted on a second surface of said transparent carrier; a linear light source having its major axis extending parallel to said major scanning direction; a cylindrical optical system having a major axis extending in said major scanning direction for condensing light from said light source to illuminate a line on the surface of the original, said line being parallel to said major scanning direction; said cylindrical optical system being united with said transparent carrier, and said photoelectric sensor being disposed on the second surface in a parallel relationship with said linear light source; and driving means for producing relative movement between the photoelectric sensor and said original.
Claim 7
Dependent Claim
144 words
An information detecting apparatus, comprising: a transparent carrier having a first surface thereof opposed to an original; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction, said photoelectric sensor being mounted on a second surface of said transparent carrier; a linear light source having its major axis extending parallel to said major scanning direction; a cylindrical optical system having a major axis extending in said major scanning direction for condensing light from said light source to illuminate a line on the surface of the original, said line being parallel to said major scanning direction; said cylindrical optical system being united with said transparent carrier, and said photoelectric sensor being disposed on the second surface in a parallel relationship with said linear light source; and driving means for producing relative movement between the photoelectric sensor and said original.
Claim 8
Dependent Claim
14 words
Apparatus according to claim 5, wherein said transparent carrier is a transparent flat plate.
Claim 9
Dependent Claim
45 words
Apparatus according to claim 6, wherein said at least one layer of cylindrical lens array is such a cylindrical lens array which forms on the surface of said photoelectric sensor an equal magnification erect image of an illuminated line on the surface of the original.
Claim 10
Dependent Claim
34 words
Apparatus according to claim 5, wherein said transparent carrier is at least one layer of cylindrical lens array, each lens element of said array having its major axis parallel to said minor scanning direction.
Claim 11
Dependent Claim
20 words
Apparatus according to claim 5, wherein said transparent carrier has a light-intercepting stop array perpendicular to said major scanning direction.
Claim 12
Dependent Claim
29 words
Apparatus according to claim 5, wherein elements in at least a portion of said photoelectric sensor has a filter disposed on the light-receiving surface thereof for reading color information.
Claim 13
Dependent Claim
114 words
An information detecting apparatus, comprising: a linear light source; a cylindrical optical system for condensing light from said light source onto a line on a surface of an original, the line being parallel to a major scanning direction; at least two rows of one-dimensional photoelectric sensors, each of said sensors including a plurality of sensor elements arrayed across the original and in said major scanning direction, said sensors being disposed parallel to each other and to a major axis of said cylindrical optical system, and said sensors being adapted to detect the same region of the line on the original; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 14
Dependent Claim
114 words
An information detecting apparatus, comprising: a linear light source; a cylindrical optical system for condensing light from said light source onto a line on a surface of an original, the line being parallel to a major scanning direction; at least two rows of one-dimensional photoelectric sensors, each of said sensors including a plurality of sensor elements arrayed across the original and in said major scanning direction, said sensors being disposed parallel to each other and to a major axis of said cylindrical optical system, and said sensors being adapted to detect the same region of the line on the original; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 15
Dependent Claim
23 words
Apparatus according to claim 11, wherein a color information reading filter is disposed between each of said photoelectric sensors and the illuminated line.
Claim 16
Dependent Claim
34 words
Apparatus according to claim 11, wherein the elements of each of said one-dimensional photoelectric sensors are arranged so as to supplement the non-light receiving area of distinct sensors and the area between the elements.
Claim 17
Dependent Claim
123 words
An information detecting apparatus comprising: a light source; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction; a condensing optical system for condensing the light from said light source to illuminate a line on the surface of an original, said line being parallel to said major scanning direction; an optical cross-talk preventing system including a plurality of lens elements arranged along said major scanning direction, each of said plurality of lens elements having a lens function at least in said major scanning direction for forming an independent optical path corresponding to one of a plurality of distinct regions of the illuminated line; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 18
Dependent Claim
123 words
An information detecting apparatus comprising: a light source; a photoelectric sensor including a plurality of sensor elements arrayed in a predetermined major scanning direction; a condensing optical system for condensing the light from said light source to illuminate a line on the surface of an original, said line being parallel to said major scanning direction; an optical cross-talk preventing system including a plurality of lens elements arranged along said major scanning direction, each of said plurality of lens elements having a lens function at least in said major scanning direction for forming an independent optical path corresponding to one of a plurality of distinct regions of the illuminated line; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 19
Dependent Claim
33 words
Apparatus according to claim 14, wherein said condensing optical system includes a transparent body having a side curved surface acting as an entrance window and a refractive lens surface for said illuminating light.
Claim 20
Dependent Claim
26 words
Apparatus according to claim 15, wherein said transparent body is disposed between said optical cross-talk preventing system and the orignal to maintain the distance therebetween constant.
Claim 21
Dependent Claim
31 words
Apparatus according to claim 14, wherein said optical cross-talk preventing system forms an erect equal magnification image of the illuminated line of the original on the surface of said photoelectric sensor.
Claim 22
Dependent Claim
42 words
Apparatus according to claim 14, wherein each of said plurality of lens elements produces, on the surfaces of at least two of said plurality of sensor elements, the image of the one of said plurality of distinct regions of said illuminated line.
Claim 23
Dependent Claim
77 words
An information detecting apparatus comprising: a light source for illuminating an original; a photoelectric sensor including a plurality of sensor elements in an array in a predetermined major scanning direction; a plurality of lens elements arranged along said major scanning direction, said plurality of lens elements forming on the surface of said photoelectric sensor array an erect equal magnification image of the original; and driving means for producing relative movement between said photoelectric sensor and the original.
Claim 24
Dependent Claim
77 words
An information detecting apparatus comprising: a light source for illuminating an original; a photoelectric sensor including a plurality of sensor elements in an array in a predetermined major scanning direction; a plurality of lens elements arranged along said major scanning direction, said plurality of lens elements forming on the surface of said photoelectric sensor array an erect equal magnification image of the original; and driving means for producing relative movement between said photoelectric sensor and the original.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |