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1. 发明专利

JPH05136948A RESONANCE SCANNER CONTROL SYSTEM 失效
公开(公告)号：JPH05136948A
公开(公告)日：1993-06-01
申请号：JP11363291
申请日：1991-05-20
申请人： GEN SCANNING INC
发明人： MAAKU JIEI SHIYAAMAA , ROJIYAA DEII DAUDO
IPC分类号： B41J2/44 , B41J2/47 , G02B26/10 , G03G15/04 , G06F1/08 , G06K15/12 , H04N1/047 , H04N1/113
摘要： PURPOSE: To generate a pattern at uniform pixel interval without distortion regardless that a moving speed of a beam spot on a print medium is ununiform in the case of scanning a laser beam with a sine vibration mirror. CONSTITUTION: A laser controller 12 to apply pulse-drive to a laser source 10 is operated continuously synchronously with an angular movement of a vibration mirror 14A of a resonance scanner 14, provided with a memory that stores a mirror position and speed information and generates a memory address corresponding to a selected pixel position and gives the address to the memory via a count means. A voltage controlled oscillator with negative feedback loop generates a clock frequency having a linear relation with a frequency control signal based on a pixel clock 22 according to information data from the memory. Each device is operated to keep accurately a pixel position in corporation with an optical scanning detector 16, a scanner driver 18 and a phase detector.

2. 发明专利

JPS63249121A RESONANCE ROTATION OPTICAL SCANNER, RESONANCE ROTATION VIBRATOR AND MECHANICAL RESONATOR 失效
公开(公告)号：JPS63249121A
公开(公告)日：1988-10-17
申请号：JP3492488
申请日：1988-02-17
申请人： GEN SCANNING INC
发明人： DEIIN AARU POORUSEN
IPC分类号： B41J2/44 , G02B26/10

3. 发明专利

JPH0755500A VARIABLE CAPACITY TRANSDUCER 失效
公开(公告)号：JPH0755500A
公开(公告)日：1995-03-03
申请号：JP11689094
申请日：1994-05-30
申请人： GEN SCANNING INC
发明人： ROJIYAA DEII DAUDO , PIEERU JIEI BUROSENSU
IPC分类号： G01D5/24 , G01D5/241
摘要： PURPOSE: To provide a high-sensitivity, high-accuracy transducer which facilitates compensation for temperature changes by providing a third movable conductive surface between a first stationary conductive source surface and a second stationary surface which is separated therefrom by a predetermined interval and works in combination therewith. CONSTITUTION: The capacitive transducer 11 has an annular stationary electrode 12 connected to a terminal 13 and has a stationary surface 14 including four conductive detecting regions 14a to 14d arranged in symmetry around a shaft 18a that is made to work in combination with the electrode 12. A rotatable conductive plate 15 is interposed between the electrode 12 and the stationary surface 14. A plate 15 has conductive lobes 16, 17 forming a butterfly part covering each part of the conductive regions 14a to 14d from lines of electric force produced by the electrode 12. A detected current does not contain components derived from drift capacitance, and this enables very accurate measurement of the motion of a rotating member. The capacitance between the excited electrode and ground can be held approximate to the capacitance formed by a detecting electrode.

4. 发明专利

JPH05326716A METHOD AND APPARATUS FOR CUTTING INTEGRATED CIRCUIT CONNECTING PASS USING PHASE-PLATE ADJUSTING TYPE LASER BEAM 失效
公开(公告)号：JPH05326716A
公开(公告)日：1993-12-10
申请号：JP28445092
申请日：1992-10-22
申请人： GEN SCANNING INC
发明人： JIEIMUZU JIEI KOODEINGURII
IPC分类号： B23K26/00 , B23K26/06 , B23K26/073 , B23K26/40 , H01L21/82 , H01L21/822 , H01L23/525 , H01L27/04
摘要： PURPOSE: To obtain a method of making uniform the intensity of a laser beam for effectively use of the laser output. CONSTITUTION: This apparatus for cutting a conductive link of an integrated circuit by a laser output uses a phase plate 26 for adjusting the output profile of the laser beam. Thus the profile given to the beam is one which approximates a Fourier transform of the desired intensity profile on a work 34. When a beam having a profile given by the phase plate 26 is received at a converging lens 32, this lens converges the beam onto a spot of the work 34, in which the spot has an intensity profile more desirable than that of the usual Gaussian laser beam profile.

5. 发明专利

JPS5476187A ELECTROSTATIC CAPACITY DETECTOR 失效
公开(公告)号：JPS5476187A
公开(公告)日：1979-06-18
申请号：JP13663878
申请日：1978-11-06
申请人： GEN SCANNING INC
发明人： BURUUSU II ROORU
IPC分类号： G01R5/18 , G01R15/16 , G01R27/26

6. 发明专利

JPS53143910A FINITEEREVOLUTION TYPE MOTOR 失效
公开(公告)号：JPS53143910A
公开(公告)日：1978-12-14
申请号：JP3354478
申请日：1978-03-23
申请人： GEN SCANNING INC
发明人： PIEERU JIEI BUROOSENSU
IPC分类号： H02K33/08 , H01F7/14 , H02K33/10 , H02K37/16 , H02K37/20

7. 发明专利

JPS5187708A 失效
公开(公告)号：JPS5187708A
公开(公告)日：1976-07-31
申请号：JP15169175
申请日：1975-12-19
申请人： GEN SCANNING INC
发明人： JEEN AI MONTAGYU
IPC分类号： H02K33/08 , H02K33/06 , H02K33/10

8. 发明专利

JPH05198877A DEVICE AND METHOD OF ADJUSTING LUMINOUS INTENSITY OF LASER DIODE 失效
公开(公告)号：JPH05198877A
公开(公告)日：1993-08-06
申请号：JP21022492
申请日：1992-08-06
申请人： GEN SCANNING INC
发明人： PIITAA TEI FURAWAAZU , ROJIYAA DEI DOUDO
IPC分类号： H01S5/06 , H01S5/0683
摘要： PURPOSE: To adjust the intensity of a generated light corresponding to an input signal by applying a part of lights emitted from a laser diode as feedback signal to an optical detector, computing an error signal, and generating a voltage control signal through an integrating amplifier, so as to adjust a current flowing in the laser diode. CONSTITUTION: When an optical feedback signal sent through a light path 36 enters a photodiode 10, a current Id is generated by the photodiode, and the current Id becomes proportional to the intensity of the incident feedback signal. The current flowing into a node 5 is the same as that flows out therefrom, and a difference between a current Idac and the current Id becomes an error current Ie . The error current Ie is integrated in a wide frequency band, and the level of the error current Ie shows a difference between the actual intensity of light emitted from the laser diode 32 and acurate intensity shown by Idac . A servo 2 controls the output of a laser diode to keep the error current Ie zero.

9. 发明专利

JPH04305614A 失效
公开(公告)号：JPH04305614A
公开(公告)日：1992-10-28
申请号：JP16678191
申请日：1991-07-08
申请人： GEN SCANNING INC
发明人： JAN AI MONTAGYUU
IPC分类号： G02B26/10 , H04N1/053 , H04N1/113
摘要： PURPOSE: To compensate pincushion distortion by varying the amplitude of the vibration of a 2nd mirror according to the position of a 1st mirror. CONSTITUTION: A two-dimensional scanner 30 makes the light beam of a stationary light source 32 impinge on a 1st (y)-directional mirror 36 along an optical path 34. The (y)-directional mirror reflects the light along an optical path 38 to direct it to a 2nd (x)-directional mirror 40 which makes it vibrate resonantly. The 2nd mirror reflects the light along a 3rd optical path 41 and directs it to a target plane 44, where a lens 43 focuses the light through an f.θfield- flattening lens 42. The 1st (y)-directional scanner 46 rotates a 1st mirror 36 on an axis 48, so as to control the (y) position of the spot obtained on the target lane 44. A controller 53 drives the scanners 46 and 50 by a raster scanning method which makes the spot scan several hundreds of times in the (x) direction with respect to each (y)-directional scan.

10. 发明专利

JPS63117655A RESONANT OSCILLATION REGULATOR 失效
公开(公告)号：JPS63117655A
公开(公告)日：1988-05-21
申请号：JP19614487
申请日：1987-08-05
申请人： GEN SCANNING INC
发明人： BURAIAN PII SUTOOKUSU
IPC分类号： H02K49/00 , B06B1/04
摘要： An element that moves resonantly has its resonant frequency dynamically tuned to a desired frequency by two components that cooperate via magnetic fields, one component being mounted for motion with the moving element.

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