US4815027A
Expired / Lapsed
US
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Optical operation apparatus for effecting parallel signal processing by detecting light transmitted through a filter in the form of a matrix
Assignee: Canon Inc
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Filing: 1987-09-23
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Granted: 1989-03-21
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Expires: 2007-09-23
Abstract
Abstract In an optical operation apparatus, a light source emits a light intensity-modulated on the basis of a first electrical signal. A modulating device receives the light from the light source and intensity-modulates the light on the basis of the first signal, and a photoelectric converting device converts the light modulated by the modulating device into a second electrical signal. These functions are carried out by any of a number of different arrangements of filter elements, and electro-optical or acoustico-optical devices can be used for intensity modulation.
Inventors
- 👤 Jun Tokumitsu
- 👤 Kenji Saito
- 👤 Yuichi Handa
- 👤 Nobuyoshi Tanaka
- 👤 Hidetoshi Nojiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G06E3/005; H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6016
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
293 words
An optical operation apparatus for effecting the following operation: ##EQU3## (n and m are integers each at least equal to 2), said apparatus comprising: a plurality of light sources arranged in a predetermined direction and emitting light of respective intensities corresponding to said S 1 , S 2 , . . . , S m , respectively; an optical filter in which m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm are arranged in the form of a matrix, said portions having transmission factors corresponding to the absolute values of said a 1i , a 2i , . . . , a ni and receiving the light from the one of said light sources emitting light of intensity corresponding to said Si (i=1, . . . , m), respectively; a plurality of photoelectric converting units arranged in a direction perpendicular to said predetermined direction for receiving the light beams transmitted through said optical filter and converting said light, beams, into electrical signals corresponding to said S 1 ', S 2 ', . . . , S n ', at least one of said units having at least a first light receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of said a 11 , . . . , a nm which has a positive value, at least a second light-receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of said a 11 , . . . , a nm which has a negative value, and means for subtracting the signal detected by said second light-receiving portion from that detected by said first light-receiving portion.
Claim 2
Dependent Claim
293 words
An optical operation apparatus for effecting the following operation: ##EQU3## (n and m are integers each at least equal to 2), said apparatus comprising: a plurality of light sources arranged in a predetermined direction and emitting light of respective intensities corresponding to said S 1 , S 2 , . . . , S m , respectively; an optical filter in which m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm are arranged in the form of a matrix, said portions having transmission factors corresponding to the absolute values of said a 1i , a 2i , . . . , a ni and receiving the light from the one of said light sources emitting light of intensity corresponding to said Si (i=1, . . . , m), respectively; a plurality of photoelectric converting units arranged in a direction perpendicular to said predetermined direction for receiving the light beams transmitted through said optical filter and converting said light, beams, into electrical signals corresponding to said S 1 ', S 2 ', . . . , S n ', at least one of said units having at least a first light receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of said a 11 , . . . , a nm which has a positive value, at least a second light-receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of said a 11 , . . . , a nm which has a negative value, and means for subtracting the signal detected by said second light-receiving portion from that detected by said first light-receiving portion.
Claim 3
Dependent Claim
34 words
An optical operation apparatus according to claim 1, wherein the light-receiving portions of said photoelectric converting units which correspond to said portions of said optical filter are arranged in the form of a matrix.
Claim 4
Dependent Claim
26 words
An optical operation apparatus according to claim 2, further comprising an optical system for forming the image of said optical filter on said photoelectric converting units.
Claim 5
Dependent Claim
44 words
An optical operation apparatus according to claim 1, wherein said S 1 , S 2 , . . . , S m are color signals and said S 1 ', S 2 ', . . . , S n ' are compensated color signals.
Claim 6
Dependent Claim
220 words
An optical operation apparatus for effecting the following operation: ##EQU4## (n and m are integers each equal to or greater than 2), said apparatus comprising: m light sources emitting lights of intensities corresponding to said S 1 , S 2 . . . , S m , respectively; an optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively; m optical fibers each having one end connected with a respective one of said light sources, the other end of each of said optical fibers being divided into n so as to guide the light from said light source emitting light of intensity corresponding to said S i , to said portions of said optical filter having transmission factors corresponding to the absolute values of said a 1i , a 2i , . . . , a ni (i=1, . . . , m), equally in amount; and n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting said light beams into electrical signals corresponding, in intensity, to said S i ' (i=1, . . . , n), respectively.
Claim 7
Dependent Claim
220 words
An optical operation apparatus for effecting the following operation: ##EQU4## (n and m are integers each equal to or greater than 2), said apparatus comprising: m light sources emitting lights of intensities corresponding to said S 1 , S 2 . . . , S m , respectively; an optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively; m optical fibers each having one end connected with a respective one of said light sources, the other end of each of said optical fibers being divided into n so as to guide the light from said light source emitting light of intensity corresponding to said S i , to said portions of said optical filter having transmission factors corresponding to the absolute values of said a 1i , a 2i , . . . , a ni (i=1, . . . , m), equally in amount; and n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting said light beams into electrical signals corresponding, in intensity, to said S i ' (i=1, . . . , n), respectively.
Claim 8
Dependent Claim
22 words
An optical operation apparatus according to claim 5, further comprising optical fibers for connecting said optical filter with said photoelectric converting units.
Claim 9
Dependent Claim
119 words
An optical operation apparatus according to claim 5, wherein at least one of of said photoelectric converting units has at least a first light-receiving portion for detecting the light transmitted through at least one said portion, if any, corresponding to at least one of said a 11 , . . . , a nm which has a positive value, at least a second light-receiving portion for detecting the light transmitted through at least one said portion, if any, corresponding to at least one of said a 11 , . . . , a nm which has a negative value, and means for subtracting the signal detected by said second light-receiving portion from that detected by said first light-receiving portion.
Claim 10
Dependent Claim
44 words
A optical operation apparatus according to claim 5, wherein said S 1 , S 2 , . . . , S m are color signals and said S 1 ', S 2 ', . . . , S n ' are compensated color signals.
Claim 11
Dependent Claim
207 words
An optical operation apparatus for effecting the following operation: ##EQU5## (n and m are integers each equal to or greater than 2), said apparatus comprising: an optical filter having two opposite faces and m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively, said portions being arranged in a predetermined direction and a direction perpendicular thereto in the form of a matrix; m light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S m , respectively, and provided on one of the two faces of said optical filter in contact therewith, each of said light sources having a light-emitting surface of the same length as said optical filter in the direction perpendicular to said predetermined direction and said light sources being arranged along said predetermined direction; and n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting said light beams into electrical signals corresponding, in intensity, to said S i ; (i=1, . . . , n), respectively.
Claim 12
Dependent Claim
207 words
An optical operation apparatus for effecting the following operation: ##EQU5## (n and m are integers each equal to or greater than 2), said apparatus comprising: an optical filter having two opposite faces and m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively, said portions being arranged in a predetermined direction and a direction perpendicular thereto in the form of a matrix; m light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S m , respectively, and provided on one of the two faces of said optical filter in contact therewith, each of said light sources having a light-emitting surface of the same length as said optical filter in the direction perpendicular to said predetermined direction and said light sources being arranged along said predetermined direction; and n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting said light beams into electrical signals corresponding, in intensity, to said S i ; (i=1, . . . , n), respectively.
Claim 13
Dependent Claim
21 words
An optical operation apparatus according to claim 9, wherein each of said light sources is a surface light emission type LED.
Claim 14
Dependent Claim
104 words
An optical operation apparatus according to claim 9, wherein at least one of said photoelectric converting units has at least a first light-receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of said a 11 , . . . , a nm which has positive value, at least a second light-receiving portion for detecting the light transmitted through at least one said portion corresponding to at least one of a 11 , . . . , a nm which has a negative value, and means for subtracting the signal detected by said second light-receiving portion.
Claim 15
Dependent Claim
44 words
An optical operation apparatus according to claim 11, wherein said s 1 , S 2 , . . . , S m are color signals and said S 1 ', S 2 ', . . . , S n ', are compensated color signals.
Claim 16
Dependent Claim
29 words
An optical operation apparatus according to claim 9, wherein said photoelectric converting units are provided on the other of the two faces of said optical filter in contact therewith.
Claim 17
Dependent Claim
173 words
An optical operation apparatus for effecting the following operation: ##EQU6## said apparatus comprising: four light sources emitting lights of intensities corresponding to a (unit signal), C, M and Y, respectively; three modulating elements, each of said modulating elements receiving the light from said four light source and intensity-modulating said lights in accordance with C, M and Y signals, respectively; an optical filter in which portions having transmission factors corresponding to the absolute values of said a 00 , . . . , a 22 and b 00 , . . . , b 25 are arranged in the form of a matrix and which receives the lights from said modulating elements; a photoelectric converting element in which light-receiving portions corresponding to the respective portions of said optical filter are arranged in the form of a matrix and which detects the light transmitted through said optical filter; and a signal processing circuit for adding and subtracting the outputs of said light-receiving portions and obtaining electrical signals corresponding to said C', M', and Y', respectively.
Claim 18
Dependent Claim
173 words
An optical operation apparatus for effecting the following operation: ##EQU6## said apparatus comprising: four light sources emitting lights of intensities corresponding to a (unit signal), C, M and Y, respectively; three modulating elements, each of said modulating elements receiving the light from said four light source and intensity-modulating said lights in accordance with C, M and Y signals, respectively; an optical filter in which portions having transmission factors corresponding to the absolute values of said a 00 , . . . , a 22 and b 00 , . . . , b 25 are arranged in the form of a matrix and which receives the lights from said modulating elements; a photoelectric converting element in which light-receiving portions corresponding to the respective portions of said optical filter are arranged in the form of a matrix and which detects the light transmitted through said optical filter; and a signal processing circuit for adding and subtracting the outputs of said light-receiving portions and obtaining electrical signals corresponding to said C', M', and Y', respectively.
Claim 19
Dependent Claim
227 words
An optical operation apparatus for effecting the following operation; ##EQU7## (m=(n 2 +n)/2, n being integers equal to or greater than 2), said apparatus comprising: n light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S n , respectively; n modulating devices, each one of said devices receiving lights from said n light sources and intensity-modulating said light in accordance with signal of S i (i=1, . . . , n); an optical filter for receiving lights from said modulating devices, said optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively, and arranged in the form of a matrix; a photoelectric converting device having light-receiving portions corresponding to said respective portions of said optical filter and arranged in the form of a matrix, said light-receiving portions detecting the light transmitted through said corresponding portions of said optical filter, respectively; and a signal processing circuit for adding and subtracting outputs of said light-receiving portions and obtaining signals corresponding, in intensity, to said S 1 ', S 2 ', . . . , S m ', respectively, said portions of said optical filter receiving the lights from said modulating devices in such a manner that said signal processing circuit can obtain said signals.
Claim 20
Dependent Claim
227 words
An optical operation apparatus for effecting the following operation; ##EQU7## (m=(n 2 +n)/2, n being integers equal to or greater than 2), said apparatus comprising: n light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S n , respectively; n modulating devices, each one of said devices receiving lights from said n light sources and intensity-modulating said light in accordance with signal of S i (i=1, . . . , n); an optical filter for receiving lights from said modulating devices, said optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively, and arranged in the form of a matrix; a photoelectric converting device having light-receiving portions corresponding to said respective portions of said optical filter and arranged in the form of a matrix, said light-receiving portions detecting the light transmitted through said corresponding portions of said optical filter, respectively; and a signal processing circuit for adding and subtracting outputs of said light-receiving portions and obtaining signals corresponding, in intensity, to said S 1 ', S 2 ', . . . , S m ', respectively, said portions of said optical filter receiving the lights from said modulating devices in such a manner that said signal processing circuit can obtain said signals.
Claim 21
Dependent Claim
27 words
An optical operation apparatus according to claim 15, wherein said modulating device is a diffraction type light modulating element which diffracts the lights from said light sources.
Claim 22
Dependent Claim
32 words
An optical operation apparatus according to claim 16, wherein the light from said n light sources is caused to be incident on said diffraction type light modulating element at mutually different angles.
Claim 23
Dependent Claim
20 words
An optical operation apparatus according to claim 16, wherein the lights from said n light sources have mutually different wavelengths.
Claim 24
Dependent Claim
51 words
An optical operation apparatus according to claim 16, wherein said diffraction type light modulating element is an acousto-optical element, and the signals of said S 1 , S 2 , . . . , S n are input to said acousto-optical element with the frequencies thereof being made different and multiplex.
Claim 25
Dependent Claim
38 words
An optical operation apparatus according to claim 16, wherein each of the lights emitted from said light sources is coupled to a thin film light waveguide, and said acoustic-optical element is provided in said thin film light waveguide.
Claim 26
Dependent Claim
19 words
An optical operation apparatus according to claim 15, wherein said diffraction type light modulating element is an electro-optical element.
Claim 27
Dependent Claim
241 words
An optical operation apparatus for effecting the following operation: ##EQU8## (m=(n 2 +n)/2, n being integers equal to or greater than 2), said apparatus comprising: n light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S n , respectively; n modulating devices, each one of said devices receiving lights from said n light source and intensity-modulating said lights in accordance with signal of S i (i=1, . . . , n); an optical filter for receiving lights from said modulating devices, said optical filter having m portions having different transmission factors and the transmission factors of said m portions of said optical filter being changed to correspond to said a i1 , a i2 , . . . , a im (i=1, . . . , n); a photoelectric converting device having m light-receiving portions corresponding to said respective portions of said optical filter detecting for detecting the lights transmitted through said optical filter; and a signal processing circuit for adding and subtracting outputs of said light-receiving portions and obtaining signals corresponding, intensity, to said S i ', when said transmission factors are changed to correspond to a 11 , a 12 , . . . , a im (i=1, . . . , n), said portions of said optical filter receiving the lights from said modulating devices in such a manner that said signal processing circuit can obtain said signals.
Claim 28
Dependent Claim
241 words
An optical operation apparatus for effecting the following operation: ##EQU8## (m=(n 2 +n)/2, n being integers equal to or greater than 2), said apparatus comprising: n light sources emitting lights of intensities corresponding to said S 1 , S 2 , . . . , S n , respectively; n modulating devices, each one of said devices receiving lights from said n light source and intensity-modulating said lights in accordance with signal of S i (i=1, . . . , n); an optical filter for receiving lights from said modulating devices, said optical filter having m portions having different transmission factors and the transmission factors of said m portions of said optical filter being changed to correspond to said a i1 , a i2 , . . . , a im (i=1, . . . , n); a photoelectric converting device having m light-receiving portions corresponding to said respective portions of said optical filter detecting for detecting the lights transmitted through said optical filter; and a signal processing circuit for adding and subtracting outputs of said light-receiving portions and obtaining signals corresponding, intensity, to said S i ', when said transmission factors are changed to correspond to a 11 , a 12 , . . . , a im (i=1, . . . , n), said portions of said optical filter receiving the lights from said modulating devices in such a manner that said signal processing circuit can obtain said signals.
Claim 29
Dependent Claim
27 words
An optical operation apparatus according to claim 22, wherein said modulating device is a diffraction type light modulating element which diffracts the lights from said light sources.
Claim 30
Dependent Claim
32 words
An optical operation apparatus according to claim 23, wherein the lights from said n light sources are caused to be incident on said diffraction type light modulating element at mutually different angles.
Claim 31
Dependent Claim
20 words
An optical operation apparatus according to claim 23, wherein the lights from said n light sources have mutually different wavelengths.
Claim 32
Dependent Claim
51 words
An optical operation apparatus according to claim 23, wherein said diffraction type light modulating element is an acousto-optical element, and the signals of said S 1 , S 2 , . . . , S n are input to said acousto-optical element with the frequencies thereof being made different and multiplex.
Claim 33
Dependent Claim
38 words
An optical operation apparatus according to claim 23, wherein each of the lights emitted from said light sources is coupled to a thin film light waveguide, and said acousto-optical element is provided in said thin film light waveguide.
Claim 34
Dependent Claim
19 words
An optical operation apparatus according to claim 23, wherein said diffraction type light modulating element is an electro-optical element.
Claim 35
Dependent Claim
34 words
An optical operation apparatus according to claim 22, wherein said portions of said optical filter and said m light-receiving portions of said photoelectric converting device are arranged in the form of a matrix, respectively.
Claim 36
Dependent Claim
191 words
An optical operation apparatus for effecting the following operation: ##EQU9## said apparatus comprising: three light source emitting lights of intensities corresponding to said C, M and Y, respectively; four modulating elements, each of said modulating elements receiving the lights from said three light sources, three of said four modulating elements intensity-modulating said lights in accordance with C, M, Y and l (unit signal) signals and one of said four modulating elements transmitting said lights without any intensity-modulation; an optical filter in which portions having transmission factors corresponding to the absolute values of said a 00 , . . . , a 22 and b 00 , . . . , b 25 are arranged in the form of a matrix and which receives the lights from said modulating elements; a photoelectric converting element in which light-receiving portions corresponding to the respective portions of said optical filter are arranged in the form of a matrix and which detects the lights transmitted through said optical filter; and a signal processing circuit for adding and subtracting the outputs of said light-receiving portions and obtaining electrical signals corresponding to said C', M' and Y', respectively.
Claim 37
Dependent Claim
191 words
An optical operation apparatus for effecting the following operation: ##EQU9## said apparatus comprising: three light source emitting lights of intensities corresponding to said C, M and Y, respectively; four modulating elements, each of said modulating elements receiving the lights from said three light sources, three of said four modulating elements intensity-modulating said lights in accordance with C, M, Y and l (unit signal) signals and one of said four modulating elements transmitting said lights without any intensity-modulation; an optical filter in which portions having transmission factors corresponding to the absolute values of said a 00 , . . . , a 22 and b 00 , . . . , b 25 are arranged in the form of a matrix and which receives the lights from said modulating elements; a photoelectric converting element in which light-receiving portions corresponding to the respective portions of said optical filter are arranged in the form of a matrix and which detects the lights transmitted through said optical filter; and a signal processing circuit for adding and subtracting the outputs of said light-receiving portions and obtaining electrical signals corresponding to said C', M' and Y', respectively.
Claim 38
Dependent Claim
221 words
An optical operation apparatus for effecting the following operation: ##EQU10## (n and m are integers each equal to or greater than 2), said apparatus comprising: m light sources emitting light beams of intensities corresponding to said S 1 , S 2 , . . . , S m , respectively; an optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively; n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting the light beams into electrical signals corresponding, in intensity, to said S i ' (i=1, . . . , n), respectively; and n optical fibers each having one end connected with a respective one of said photoelectric converting units, the other end of each of said optical fibers being divided into m so as to guide the light beams transmitted through said portions of said optical filter having the transmission factors corresponding to said a i1 , a i2 , . . . , a im (i=1, . . . , n) to said photoelectric converting unit for outputting the electrical signal corresponding to said S i '.
Claim 39
Dependent Claim
221 words
An optical operation apparatus for effecting the following operation: ##EQU10## (n and m are integers each equal to or greater than 2), said apparatus comprising: m light sources emitting light beams of intensities corresponding to said S 1 , S 2 , . . . , S m , respectively; an optical filter having m×n portions having transmission factors corresponding to absolute values of said a 11 , . . . , a nm , respectively; n photoelectric converting units each receiving light beams transmitted through said portions of said optical filter having transmission factors corresponding to absolute values of said a i1 , . . . , a im , and converting the light beams into electrical signals corresponding, in intensity, to said S i ' (i=1, . . . , n), respectively; and n optical fibers each having one end connected with a respective one of said photoelectric converting units, the other end of each of said optical fibers being divided into m so as to guide the light beams transmitted through said portions of said optical filter having the transmission factors corresponding to said a i1 , a i2 , . . . , a im (i=1, . . . , n) to said photoelectric converting unit for outputting the electrical signal corresponding to said S i '.
References Cited (Backward Citations)
US4009380A
Cited
US4588255A
Cited
US4566077A
Cited
US4567569A
Cited
US4595994A
Cited
US4569033A
Cited
US4603398A
Cited
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| 3.5 Years (Year 4) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
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