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1. 发明专利

JPH0961136A INSPECTION METHOD FOR QUALITY OF SURFACE 失效
公开(公告)号：JPH0961136A
公开(公告)日：1997-03-07
申请号：JP23903295
申请日：1995-08-25
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： YAMAMOTO KAZUO , HATANO TOSHIKAZU , UEKI KATSUYA , TAKASHIMA KAZUO
IPC分类号： G01B11/30 , G01N21/89 , G01N21/892
摘要： PROBLEM TO BE SOLVED: To provide an inspection method in which the number of imaging elements can be reduced by a method wherein a rectangular image having a large aspect ratio on a material to be inspected is formed on a two-dimensional imaging element which is a square shape or a rectangular shape having a small aspect ratio. SOLUTION: The surface of a slab 02 as a material to be inspected is irradiated with slit light from a light source 01, and its reflected light is condensed by a lens 03. After it has been condensed, its image is formed on a two-dimensional imaging element 05 via one- dimensional image guides arranged at constant intervals on the side of the slab 02 and via an image compression means 04 which has been installed at the other end without a gap. At this time, as an image which is radiated on the output side of the means 04, the image of the slab 02 becomes an image which is discontinuous and which is compressed in the width direction, and it is formed on the element 02. Consequently, the transversely long image in the width direction of the slab 02 can be formed on the element 05 which is a square shape or a rectangular shape having a small aspect ratio. An image, for measurement of a slab surface shape, which has been obtained is analyzed by an image processor 07, and the shape on the surface of the material to be inspected is measured. Thereby, the number of imaging elements can be reduced, the maintainability of an apparatus can be enhanced, and the inspection time of an inspection method can be shortened.

2. 发明专利

JPH06229742A METHOD FOR MEASURING CURVATURE, OUTER DIAMETER, AND CIRCULARITY OF TUBULAR ITEM SIMULTANEOUSLY 失效
公开(公告)号：JPH06229742A
公开(公告)日：1994-08-19
申请号：JP3470693
申请日：1993-01-29
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO KAZUO , SAKAGAMI YOSHIHIRO
IPC分类号： G01B11/24 , G01B11/26 , G01B11/30
摘要： PURPOSE:To allow the highly accurate simultaneous measurement of curvature, outer diameter, and circularity of a tubular item by taking advantage of common points in the measurement of curvature and outer diameter. CONSTITUTION:A tubular item 1 to be measured is supported from below at two points separated from each other in the axial direction. The item 1 is then scanned by means of a distance detector using a laser beam 7 while being rotated one or more turn in the circumferential direction. The distances L1, L2 from a reference point S on the outside of the item 1 to the opposite edges P1, P2 on the surface of the item 1 are then determined based on the scanning speed V and the scanning times T0, T1, T2. Outer diameter D and the distance L0 from the reference point S and the center 0 are determined based on the measurements L1, L2. Curvature of the item 1 is determined based on the maximum and minimum measurements of the distance L0. The circularity of the item 1 is determined based on the variation of outer diameter in the circumferential direction caused by rotation of the item 1.

3. 发明专利

JPH06229726A METHOD AND APPARATUS FOR MEASURING DIMENSIONS OF MECHANICAL COMPONENT 失效
公开(公告)号：JPH06229726A
公开(公告)日：1994-08-19
申请号：JP3470393
申请日：1993-01-29
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO KAZUO
IPC分类号： G01B11/24 , G01B11/245 , G01B21/20
摘要： PURPOSE:To allow the highly accurate automatic measurement of dimensions, e.g. inner diameter or outer diameter, with no effect of gloss or the like on the surface of an object, i.e., a tubular mechanical component such as gear, bearing, or bush, even when the size of the object varies every time. CONSTITUTION:An object 1, i.e., a tubular mechanical component, is placed in the measuring area of a three-dimension measuring apparatus 2 with the axial direction thereof directing vertically. The object 1 is then imaged by an upright TV camera 7 and a lateral TV camera 6 and an image processing section 8 recognizes rough dimensions and position of the object 1 in the space from the image information. A three-dimensional measuring apparatus operation command section 9 calculates the moving path of a probe 3 in the apparatus 2 based on the recognized information and then the apparatus 2 is operated thus measuring accurate dimensions of the object 1 automatically. In this regard, illuminators 5, 4 illuminate the object 1 from the opposite side to the imaging direction and the shades of the object 1 are photographed by the cameras 7, 6.

4. 发明专利

JPH061186B2 失效
公开(公告)号：JPH061186B2
公开(公告)日：1994-01-05
申请号：JP21202586
申请日：1986-09-09
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO KAZUO , TERUNUMA TOSHIO
IPC分类号： G01B21/20

5. 发明专利

JPH04347972A CONTACT TYPE IMAGE SENSOR 失效
公开(公告)号：JPH04347972A
公开(公告)日：1992-12-03
申请号：JP14979491
申请日：1991-05-24
申请人： NIPPON STEEL CORP
发明人： KITAMURA KOICHI , YAMAMOTO KAZUO
IPC分类号： H04N1/028 , H04N1/40 , H04N1/401 , H04N5/335 , H04N5/361 , H04N5/369 , H04N5/378
摘要： PURPOSE:To provide a contact type image sensor capable of performing the sufficient shading correction even if the capacity of memory is reduced. CONSTITUTION:A picture reading element is selected from each block and the bright output is stored as the data for the shading correction in a ROM 10. Based on this, the shading correction is performed for the picture signal from all the picture reading elements within the same block. The method for selecting the picture reading element applying the data for the shading correction is arbitrary. The data of the bright output of these picture reading elements is preliminarily stored in the ROM 10 and is read at the time of the execution of the shading correction.

6. 发明专利

JPH04314255A CLOSE CONTACT TYPE IMAGE SENSOR UNIT 失效
公开(公告)号：JPH04314255A
公开(公告)日：1992-11-05
申请号：JP10848291
申请日：1991-04-12
申请人： NIPPON STEEL CORP
发明人： SAI KAZUYOSHI , YAMAMOTO KAZUO , KITAMURA KOICHI
IPC分类号： H01L27/14 , H04N1/028
摘要： PURPOSE:To mount a mounting board to a mount frame with high accuracy even when the inexpensive mounting board not requiring the thin film technology to manufacture a high density pattern. CONSTITUTION:Holes 30a, 30b of a same size are made to a glass epoxy board 4 and a mount frame 12 respectively. An image sensor 2 is mounted onto the glass epoxy board 4 by using a double sided tape so that a center of a sensor element 22 comes to a position on the epoxy board 4 apart from a center axis of the hole 30a by a prescribed distance A. The mount frame 12 is processed so that a distance B from the center axis of the hole 30b of the mount frame 12 till the center of a 'SELFOC(R)' lens 8 is equal to the distance A. The holes 30a, 30b are matched and the glass epoxy board 4 and the mount frame 12 are fixed by using a pin 14.

7. 发明专利

JPH04101568A SIGNAL PROCESSING CIRCUIT FOR IMAGE SENSOR 失效
公开(公告)号：JPH04101568A
公开(公告)日：1992-04-03
申请号：JP21974390
申请日：1990-08-20
申请人： NIPPON STEEL CORP
发明人： NAGATAKE YOICHI , MATSUMOTO KOICHI , YAMAMOTO KAZUO , KITAMURA KOICHI
IPC分类号： H04N1/028 , H04N1/40
摘要： PURPOSE:To make a signal processing circuit of image sensor possible to carry out binary coding of signal using a simple binary coding circuit and to obtain high quality image signal by providing an image sensor signal processing circuit further with another signal holding circuit. CONSTITUTION:To an input terminal 10, an image signal from photodiodes connected altogether so as to form a matrix is inputted and amplified by a preamplifier 12. This amplified signal is processed for sampling by a sample hold circuit 14, and after that, this value is held for a certain period of time. This sample hold circuit 14 can be substituted by an integral circuit. An amount of electron charge that is extracted from the photodiodes, if it is desired to obtain a signal corresponding to the amount of electron charge, can also be obtained from an integral circuit.

8. 发明专利

JPH03159168A COMPLETE CONTACT TYPE IMAGE SENSOR 失效
公开(公告)号：JPH03159168A
公开(公告)日：1991-07-09
申请号：JP29905889
申请日：1989-11-16
申请人： NIPPON STEEL CORP
发明人： KITAMURA KOICHI , SAI KAZUYOSHI , MIMURA SHUSUKE , YAMAMOTO KAZUO , OTA YASUMITSU
IPC分类号： H01L27/146
摘要： PURPOSE:To improve sensitivity without deterioration of a MTF and to obtain easy manufacture by dividing a photodetector into plural sections. CONSTITUTION:In a complete contact type image sensor in which an original A is brought into close contact with a photodetector 5 and reflected light from the original A is photoelectrically converted by the photodetector 5, the photodetector 5 is divided into plural section. For example, a plurality of sensor elements 2 are disposed on a glass board 1, each element 2 is formed of a photodiode 5 of a pin structure using amorphous silicon and a blocking diode 6. The photodiode 5 and the diode 6 are formed on a common lower electrode 11, and an upper electrode 12 is formed on the diode 6 through a transparent conductive film 13. Each photodiode 5 is divided into a plurality of photodiodes 5, and a small gap 5b is formed on each photodiode 5.

9. 发明专利

JPH03143159A CONTACT TYPE IMAGE SENSOR 失效
公开(公告)号：JPH03143159A
公开(公告)日：1991-06-18
申请号：JP28250689
申请日：1989-10-30
申请人： NIPPON STEEL CORP
发明人： KITAMURA KOICHI , YAMAMOTO KAZUO , SAI KAZUYOSHI , NAGATAKE YOICHI , MIMURA SHUSUKE , OTA YASUMITSU
IPC分类号： H04N1/028 , H01L27/146 , H04N1/40
摘要： PURPOSE:To remove an unnecessary false signal from an output signal by integrating the output signal of a photodiode by an integrating means. CONSTITUTION:When a driving pulse I1 is supplied to blocking diodes 21-16, a control part 20 provided in each of output circuit C1 to C16 turns off a switch SW connected in parallel with an integrator 10 at the fall time t1 of the driving pulse I1 and turns on the switch SW at a time t3 a little earlier than the rise time t2 of the driving pulse I1. Thus, an unnecessary false signal resulting from a capacitor Cc at a crossover portion is removed so that an output signal can be obtained by integrating only a true signal portion.

10. 发明专利

JPH0354959A CONTACT TYPE IMAGE SENSOR 失效
公开(公告)号：JPH0354959A
公开(公告)日：1991-03-08
申请号：JP9114690
申请日：1990-04-05
申请人： NIPPON STEEL CORP
发明人： KITAMURA KOICHI , MIMURA SHUSUKE , YAMAMOTO KAZUO , OTA YASUMITSU , SAI KAZUYOSHI
IPC分类号： H01L27/146 , H04N1/028 , H04N5/335 , H04N5/341 , H04N5/359 , H04N5/369 , H04N5/374
摘要： PURPOSE:To rapidly drive the contact type image sensor and to prevent the generation of cross talking at a cross-over part by controlling the sensor so that potential differences between the cathods of plural photodiodes or between their anodes are always held at zero volt. CONSTITUTION:At the time of reading out information stored in the photodiodes 6, a control drive part 10 applies a -5V pulse e.g. to blocking diodes 5, and at the time of storing the information, controls the cathode sides of the diodes 5 to '0... volt. A control part 20 always holds the cathode sides of the photodiodes 6 at '0' volt. Since the potential difference is not generated between the electrodes on the cross-over part of the photodiodes 6 even when electrostatic capacity exists, the floating capacity of the cross-over part does not exert influence upon the operation of the circuit. Consequently, rapid drive can be attained and the generation of cross talking on the cross-over part can be prevented.

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