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1. 发明专利

JPH02112706A POSITION DETECTING CIRCUIT 失效
公开(公告)号：JPH02112706A
公开(公告)日：1990-04-25
申请号：JP26552788
申请日：1988-10-21
申请人： ANDO ELECTRIC , SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKEI SHOICHI , YANO TETSUO , HATTORI YASUJI , SUZUKI SHUZO
IPC分类号： G01B11/00
摘要： PURPOSE:To simplify the constitution of an optical system by knowing a distance between a beam waist position and an object to be measured from a rise or fall time of a detected signal, and knowing a position relation before and behind the object to be measured from a scattered light of the object to be measured. CONSTITUTION:When an object 6 to be measured is separated from a beam waist position, the beam diameter which intersects the object 6 to be measured becomes large, therefore, a rise of a signal outputted from a photodetector 5 is varied as a broken line from a full line. When the beam is varied by a distance without varying a distribution state in accordance with an expression I, for instance, like an interval extending from 10 to 90%, it is known by a calculation that an interval corresponding to some prescribed ratio of power is proportional to a beam diameter W. As shown clearly in the expression I, when a distance X is fixed, the beam diameter W is fixed respective of a distance in the scanning direction. Accordingly, the distance X in the optical axis direction is known from the time (t) irrespective of the position in the scanning direction of the object 6 to be measured. In such a way, the constitution of an optical system is simplified.

2. 发明专利

JPH0231102A OPTICAL DIMENSION MEASURING DEVICE 失效
公开(公告)号：JPH0231102A
公开(公告)日：1990-02-01
申请号：JP18202688
申请日：1988-07-21
申请人： ANDO ELECTRIC , SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKEI SHOICHI , YANO TETSUO , HATTORI YASUJI , SUZUKI SHUZO
IPC分类号： G01B11/02
摘要： PURPOSE:To obtain a measured result stable over a long period of time by obtaining a measured value, wherein the variation of a circumferential condition is corrected, by subtracting the deviation data of a reference master from that of an object to be measured. CONSTITUTION:A reference 8 to be used has material quality and a wire diameter almost same to those of an object 5 to be measured and is arranged between lenses 3, 4. In this case, the object 5 to be measured and the master 8 are arranged in parallel so as not to become shadows each other. Deviation is caused by the thermal expansion or contraction of the object 5 to be measured or master 8 according to circumstances but, for the most part, by the mechanical distortion, expansion and contraction of the first measuring systems 3-7 and the second measuring systems 11-14 or the output variation of a light source 1, the intensity of beam and the variation of the center of gravity. Therefore, by subtracting the deviation of the master 8 from the measured result of the object 5 to be measured, the correct measured value of the object 5 to be measured can be calculated.

3. 发明专利

JPH0228504A MEASURING INSTRUMENT FOR OUTSIDE DIAMETER 失效
公开(公告)号：JPH0228504A
公开(公告)日：1990-01-30
申请号：JP17814688
申请日：1988-07-19
申请人： SUMITOMO ELECTRIC INDUSTRIES , ANDO ELECTRIC
发明人： HATTORI YASUJI , SUZUKI SHUZO , TAKEI SHOICHI , YANO TETSUO
IPC分类号： G01B11/08
摘要： PURPOSE:To improve a stability for a measuring value by using a single polarizing laser with a stabilized frequency as a light source. CONSTITUTION:The single polarizing laser with the stabilized frequency, e.g., a frequency stabilized He-Ne laser for the single polarizing oscillation is used as the light source 18. Luminous fluxes of the laser 18 oscillated by a power source 16 for the laser are transmitted to a rotary mirror 3 through a mirror 6. This rotary mirror 3 is provided on a driving system 2 and driven by a driver 1, thereby the luminous fluxes are deflected in an internal of 11-11A and made to be the parallel luminous fluxes 12-12A through a lens 13. These parallel luminous fluxes 12-12A are orthogonally crossed with an axis direction of a columnar object 7 to be inspected, by which interrupted in the time interval proportional to the outside diameter, then transmitted to a detector 9 through a condensing lens 8 and an aperture 17. A photoelectric conversion is made for an output signal of this detector 9, and the signal is transmitted to a signal processing circuit 14 through an amplifier 10. In this circuit 14, an edge is detected by the beam which is interrupted with the object 7 to be inspected, and the outside diameter of the object 7 is obtained by means of counting a clock pulse for the edge interval.

4. 发明专利

JPS61245112A POSITIONING METHOD FOR OPTICAL FIBER FUSION SPLICING DEVICE 失效
公开(公告)号：JPS61245112A
公开(公告)日：1986-10-31
申请号：JP8596685
申请日：1985-04-22
申请人： KOKUSAI DENSHIN DENWA CO LTD , ANDO ELECTRIC
发明人： IWAMOTO YOSHINAO , FUJISE MASAYUKI , TAKEI SHOICHI , YANO TETSUO
IPC分类号： G02B6/24 , G02B6/255 , H01L41/09
摘要： PURPOSE:To obtain a small-size, lightweight device which eliminates the need for a displacement detector by using piezoelectric elements which have hysteresis characteristics and creeping characteristics as positioning elements. CONSTITUTION:Light from a light source 8A is made incident on an optical fiber 1A, projection light from an end part 5A is guided into an optical fiber 1B from its end part 5B, and the photodetection level of the projection light is measured by an optical wattmeter 8B connected to the optical fiber 1B. Then, V blocks 2A and 2B are so positioned that the photodetection level is maximum and then the optical fibers 1A and 1B transmit light from the light source 8A efficiently. Namely, voltages are applied to piezoelectric elements 4A and 4B in the order of V0, V2, and V0, a voltage V5 obtained by adding a voltage DELTAVA to a voltage V1 at which the optical wattmeter shows the maximum value is applied, and a voltage V0 which is a voltage DELTAVB lower than the voltage V5 is applied. In this state, the end parts 5A and 5B of the 1st optical fiber 1A and the 2nd optical fiber 1B are fusion spliced together.

5. 发明专利

JPH03267704A DIMENSION MEASURING INSTRUMENT USING LIGHT 失效
公开(公告)号：JPH03267704A
公开(公告)日：1991-11-28
申请号：JP6563190
申请日：1990-03-16
申请人： ANDO ELECTRIC
发明人： TAKEI SHOICHI , YANO TETSUO
IPC分类号： G01B11/02
摘要： PURPOSE:To easily position a body to be measured and to obtain a measurement result with good reproducibility by adjusting the position of a beam waist to the position of the body to be measured at all times. CONSTITUTION:When the body 6 to be measured is irradiated with parallel scanning light and its formed shadow is detected by a photodetecting element 5 to measure the dimension, a beam diameter conversion lens 31 set on a uniaxial driving mechanism 30 is moved first by a pulse motor 29 by a constant quantity in a predetermined direction and the outputs of a counter circuit 24 before and after the movement are compared with each other to detect the beam waist position on the body 6 to be measured. Then the motor 29 is rotated to shift the beam waist position by a constant quantity every time the parallel scanning light makes a scan, thereby setting the beam waist position nearby the body 6 to be measured. Consequently, the excellent reproducibility can be obtained without accurately positioning the body to be measured.

6. 发明专利

JPH05231827A OPTICAL DIMENSION MEASURING DEVICE FOR MEASURING SHORT AND LONG DIMENSIONS 失效
公开(公告)号：JPH05231827A
公开(公告)日：1993-09-07
申请号：JP6909492
申请日：1992-02-18
申请人： ANDO ELECTRIC
发明人： YANO TETSUO , TAKEI SHOICHI
IPC分类号： G01B11/02 , G01B11/08
摘要： PURPOSE:To measure dimensions of an object to be measured without increasing the size of a lens by driving a scanner with AC when measuring an object to be measured with short dimensions and then driving the scanner with DC when measuring an object to be measured with long dimensions. CONSTITUTION:When measuring an object 10 to be measured with short dimensions, the output of an AC voltage generation circuit 1A is supplied to a galvano-type scanner 3 and a shape which is generated when the object 10 to be measured obstructs a parallel scanning beam 13 is detected by a light receiver 5 to measure the length of the object to be measured 10. When measuring the object 10 to be measured of long dimensions. the output of a DC voltage generation circuit 1B is supplied to the galvano-type scanner 3, the object 10 to be measured is moved in a direction which crosses the parallel scanning beam 13 with a drive mechanism 6. and a linear scale 7 reads the positions of starting and ending edges where the object 10 to be measured obstructs one optical beam 14, thus measuring the length of the object 10 to be measured.

7. 发明专利

JPS61245113A POSITIONING METHOD FOR OPTICAL FIBER FUSION SPLICING DEVICE 失效
公开(公告)号：JPS61245113A
公开(公告)日：1986-10-31
申请号：JP8596785
申请日：1985-04-22
申请人： KOKUSAI DENSHIN DENWA CO LTD , ANDO ELECTRIC
发明人： IWAMOTO YOSHINAO , FUJISE MASAYUKI , TAKEI SHOICHI , OOTA KAZUNORI
IPC分类号： G02B6/24 , G02B6/255
摘要： PURPOSE:To position a device with good reproducibility by adjusting displacement devices for an X and a Y axis and correcting an axis shift between two blocks. CONSTITUTION:Light from a light source 8A is made incident on an optical fiber 1A and the photodetection level of projection light from an end part 5A is measured by an optical wattmeter 8B connected to an optical fiber 1B. Then, the blocks 2A and 2B are positioned by X-axis displacement devices 2A, 3A, and 4A and Y-axis displacement devices 2B, 3B, 4B, and 7B so that the photodetection level is maximum. Consequently, the photodetection level becomes maximum and the optical fibers 1A and 1B transmit the light from the light source 8A efficiently, so the optical fibers 1A and 1B have their end parts 5A and 5B fusion spliced together after being positioned.

8. 发明专利

JPS626104A DIMENSION MEASURING INSTRUMENT BY LIGHT 失效
公开(公告)号：JPS626104A
公开(公告)日：1987-01-13
申请号：JP5134585
申请日：1985-03-14
申请人： ANDO ELECTRIC
发明人： TAKEI SHOICHI , SUZUKI HIDEO , YANO TETSUO
IPC分类号： G01B11/02
摘要： PURPOSE:To erase a measuring error by dividing into two an output of a photodetector, which has been condensed, when an object to be measured exists in an optical path of parallel scanning rays, and when said object does not exist, and comparing a value which has been added by sample holding, and the output of the photodetector. CONSTITUTION:Parallel scanning rays 1 are condensed by a lens 3, and an output of a photodetector 4 is divided into two by ad dividing device 11. In this state, an output V of the time when an object to be measured 2 does not exist s divided into two and V/2 is sample-held 12 by a signal 17. Also, an output V0 of the time when the object to be measured 2 exists is divided into two and V0/2 is sample-held 13 by a signal 18. By adding both sample values, V1=(V-V0) is derived. Next, the output V of the photodetector 4 is compared with the output V1 by a comparator 15, and a voltage VC corresponding to V/2 is derived by an expression. In this way, an output to a dimension 10 which has eliminated an error caused by a shadow is obtained, and a measuring error caused by the shadow can be eliminated.

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