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1. 发明专利

JPH07320330A OPTICAL DISC APPARATUS 失效
公开(公告)号：JPH07320330A
公开(公告)日：1995-12-08
申请号：JP12111195
申请日：1995-05-19
申请人： HITACHI LTD
发明人： YONEZAWA SEIJI , OTA NORIO , NIIHARA TOSHIO , KATAOKA KEIJI , TAKAHASHI MASAHIKO , MIYAMOTO JIICHI , SUKETA YASUSHI , TSUYOSHI TOSHIAKI
IPC分类号： G11B20/14 , G11B5/02 , G11B11/10 , G11B11/105
摘要： PURPOSE:To facilitate the high density overwriting by making a laser beam and a magnetic field synchronize with data clock signals to be modulated and controlling the laser beam and the magnetic field CONSTITUTION:A laser beam is applied to a magneto-optical disc 21 on which servo regions and data regions are alternately provided along approximately concentric tracks by a laser optical system 24 and a laser beam returned from the magneto-optical disc 21 is detected by a photodetector 29. A servo means controls the position to which the laser beam is applied in accordance with the output of the photodetector 29 which detects the laser beam which is modulated by tracking signal pits formed in the servo regions and returned. A clock circuit (PLL) 36 transmits clock signals 9 in accordance with the signals which are outputted by the photodetector 29 while the laser beam is applied to the servo region. A laser driving circuit 26 applies the laser beam to the data regions as continual pulses synchronized with the clock signals. A magnetic coil 27 applies a modulated magnetic field to the a magneto-optical disc 21 in accordance with data which are to be recorded synchronously with the clock signals.

2. 发明专利

JPH03140840A FLOW CYTOANALYSER 失效
公开(公告)号：JPH03140840A
公开(公告)日：1991-06-14
申请号：JP27948789
申请日：1989-10-26
申请人： HITACHI LTD
发明人： YAMAZAKI ISAO , OKI HIROSHI , KANEKO NORIO , KATAOKA KEIJI
IPC分类号： G01N21/64 , G01N15/14 , G01N21/01 , G01N21/21 , G01N21/53
摘要： PURPOSE:To miniaturize the title apparatus and to perform highly reliable cyto-analysis shortened in the time required in analysis by arranging a polyarizing branch element and a converging lens on the route of laser beam between an optical means and a flow cell. CONSTITUTION:Laser beam 3 passes through a beam shaping optical system constituted of a 1/2 wavelength plate 7, a Wollaston polarizing prism 8 and a converging lens system 2 to irradiate the observation point on the axis of a flow cell and is absorbed by the beam trap 11 provided in front of the observation point 5. When a cell suspension is allowed to flow through the flow cell 1 from a sheath liquid feeder 19 and a sample solution feeder 20, a cell diffuses beam at the observation point 5. The beam diffused from the observation point 5 is formed into an image on the detection surface of a photodetector 10 by a condensing lens 6 and the intensity thereof is detected. The scattering beam or fluorescence detected by the photodetector 10 is closely related to the kind or properties of a cell. Therefore, by analyzing the scattering beam or fluorescence from an individual cell, the number or ratio of various cells in a blood sample can be obtained.

3. 发明专利

JPH01198019A ALIGNER 失效
公开(公告)号：JPH01198019A
公开(公告)日：1989-08-09
申请号：JP2194788
申请日：1988-02-03
申请人： HITACHI LTD
发明人： KATAOKA KEIJI , KATAGIRI SOUICHI , KUROSAKI TOSHISHIGE
IPC分类号： G03F7/20 , G01B11/00 , G03F9/00 , H01L21/027 , H01L21/30 , H01L21/68
摘要： PURPOSE:To improve the precision in position alignment of a mask pattern, by a construction wherein beams emitted from a light source emitting two wavelength and reflected by a wafer mark and a mask mark respectively are focused on a photodetector, and a filter taking out only plus and minus primary diffracted beams of the reflected light is provided, while a slit is provided on an image-forming plane. CONSTITUTION:Exposure light 8 from an excimer laser or a mercury vapor lamp passes through a condenser lens 30 and transfers a pattern on a mask 1 onto a wafer 3. An He-Ne laser 10 having two frequencies is employed as a laser for position alignment of the wafer and the mask, and laser light thereof is reflected by a mirror 5-2 and a reflecting surface 9 of the mask and irradiates a wafer mark 4. A diffracted beam from the wafer mark is reflected by a mirror 5-3 on the reflecting surface of the mask and passes through a halved concave lens 14 operating as a chromatic aberration correcting element, so that the position of formation of an image of the wafer mark may come to the position of the mask. A lens 15-1 is a lens having a focus at the mask position, and a spatial filter for taking out only plus and minus primary diffracted beams is disposed on the focal plane on the rear side of said lens. These beams are focused on a slit 18 by a lens 15-2 and the optical intensity thereof is detected by a photodetector 13.

4. 发明专利

JPS6299927A OPTICAL PICKUP 失效
公开(公告)号：JPS6299927A
公开(公告)日：1987-05-09
申请号：JP23725185
申请日：1985-10-25
申请人： HITACHI LTD
发明人： ARIMOTO AKIRA , KATAOKA KEIJI , HIYOSHI YASUO , KANEDA AIZO , KOKUSHO SACHIKO
IPC分类号： G02B6/122 , G02B6/12 , G02F1/33 , G02F1/335 , G11B7/09 , G11B7/135
摘要： PURPOSE:To attain miniaturization and high speed accessing by forming a thin film optical guide path mode of a calcogenide on an acoustooptic crystal and applying an ultrasonic surface elastic wave to the acoustooptic crystal so as to apply optical deflection. CONSTITUTION:The waveguide path 3 made of a calcogenide glass is formed on the AO crystal delivering a surface acoustic ultrasonic wave by the sputtering or vapor deposition. The laser light from a semiconductor layer 4 is a linear collimated luminous flux by a flat lens 6 formed in the calcogenide glass guide path 5 and subject to optical deflection by an ultrasonic wave from an optical deflector 7. The light subjected to the light deflection is irradiated in air through a grating coupler 8 formed on the calcogenide guide path and stopped on an optical disc 9. The light reflected in the optical disc 9 passes again through the grating coupler 7 and the 0-th order light reaches the photodetector 10.

5. 发明专利

JPS6026905A SPHERICAL HOLOGRAM LENS 失效
公开(公告)号：JPS6026905A
公开(公告)日：1985-02-09
申请号：JP13432583
申请日：1983-07-25
申请人： HITACHI LTD
发明人： TATENO KIMIO , KATAOKA KEIJI , YONEZAWA SEIJI
IPC分类号： G02B5/32 , G03H1/02 , G11B7/135
摘要： PURPOSE:To obtain a hologram lens of a low aberration with which the aberration arises hardly even if conditions vary in the stage of recording and reproduding by forming a hologram face into the spherical face having the curvature of which the center conincides with the focus of the lens and the radius coincides with the focal length of the lens. CONSTITUTION:The hologram face of a hologram lens 4 constitutes the spherical face of which the center coincides with the focus F of the lens and the radius is the focal length (f) of the lens when incident light is parallel luminous fluxes. Coherent light is split to two beams by a beam splitter 10 or the like. One thereof is made reference parallel beams 9 which are irradiated via a beam slitter 10 onto a recording material 8 provided on a spherical base plate 7. The other is made to form the wave surface desired to be recorded by a lens 11 having a desired aperture angle and is guided as object light via the plate 7 to the material 8 where said light is interefered with the light 9 to create a hologram. The spherical hologram lens 4 is thus formed. Such lens 4 is removed of a comatic aberration near the optical axis as the sine condition h=fsintheta holds if the focal length is designated as (f), the radius of the incident luminous flux 3 as (h) and the aperture angle to determine numerical aperture NA as theta.

6. 发明专利

JPS59215033A Optical disc recording and reproducing device 失效
标题翻译：光盘记录和再现设备
公开(公告)号：JPS59215033A
公开(公告)日：1984-12-04
申请号：JP8911683
申请日：1983-05-23
申请人： Hitachi Ltd
发明人： TATENO KIMIO , KATAOKA KEIJI , TADA YOSHITO , HARA FUMIO , KAKU TOSHIMITSU
IPC分类号： G11B17/04 , G11B7/0037 , G11B7/08 , G11B7/14 , G11B7/12
CPC分类号： G11B7/0037 , G11B7/08
摘要： PURPOSE:To obtain a small-sized multi-optical head suitable for the stack system by separating a light source section and a control section comprising a head part consisting of an objective lens and a mirror moved while accessing on an optical disc, an automatic focus detecting system and a tracking signal detecting system. CONSTITUTION:A pickup part 5 (comprising an objective lens 2 and mirror 3) is supported on a guide 6 between optical discs 1, 1 arranged in the form of stack at a prescribed interval so as to be moved in the radial direction of the discs 1. A beam 4 from the light source in an optical box 15 reaches the optical discs 1 and returns to the optical box 15 after being reflected. Although the distance between the optical pickup part 5 and the optical box 15 is changed depending on the access position on the optical discs 1, a prescribed optical spot is obtained on the optical discs 1 at all times by forming the laser beam 4 in parallel.
摘要翻译：目的：通过分离光源部分和包括由物镜组成的头部和在光盘上移动的镜子的控制部分来获得适合于堆叠系统的小尺寸多光头，自动对焦检测系统和跟踪信号检测系统。构成：拾取部5（包括物镜2和反射镜3）被支撑在以规定间隔布置成堆叠形式的光盘1,1之间的引导件6上，以沿盘的径向方向移动在光学盒15中的来自光源的光束4到达光盘1并被反射回到光学盒15。虽然光拾取部件5和光学盒15之间的距离根据光盘1上的存取位置而改变，但是通过平行地形成激光束4始终在光盘1上获得规定的光点。

7. 发明专利

JPS59125A Optical system 失效
标题翻译：光学系统
公开(公告)号：JPS59125A
公开(公告)日：1984-01-05
申请号：JP8910883
申请日：1983-05-23
申请人： Hitachi Ltd
发明人： KATAOKA KEIJI , YONEZAWA SEIJI
IPC分类号： G02B27/09 , G06K7/10 , G11B7/125 , G11B7/135
CPC分类号： G06K7/10861
摘要： PURPOSE:To read out correctly information, by arranging a coupling lens between a semiconductor laser which emits an ellipsoidal beam and an objective lens and forming a minute circular spot on a disk. CONSTITUTION:A beam from a semiconductor laser light source 1 which has a luminous area of a different light-width ratio and, therefore, whose emissive light distribution forms an ellipsoidal beam pattern is irradiated upon the whole surface of an objective lens 3 by means of a coupling lens 2 and a spot 4 stopped down on the surface of a disk 5 by the lenses 2 and 3 is adjusted to a half- value width of about 1mumphi. The optical system becomes more effective when a lens of an N.A of about 0.4-0.5 having 20-30-fold magnification is used for the lens 3 and a lens having seven-fold or less magnification is used for the lens 2.
摘要翻译：目的：通过在发射椭圆光束的半导体激光器和物镜之间布置耦合透镜并在圆盘上形成微小的圆形斑点，正确地读出信息。构成：将来自半导体激光光源1的光束照射到物镜3的整个表面，半导体激光光源1具有不同的光宽比的发光区域，并且因此其发射光分布形成椭圆形的光束图案，借助于通过透镜2和3将耦合透镜2和停留在盘5的表面上的光斑4调节到约1μm的半值宽度。当透镜3使用具有20-30倍放大率的约0.4-0.5的N.A的透镜时，光学系统变得更有效，并且对透镜2使用具有七倍或更小倍率的透镜。

8. 发明专利

JPS5814661A IMAGE INPUT AND OUTPUT DEVICE 失效
公开(公告)号：JPS5814661A
公开(公告)日：1983-01-27
申请号：JP11217281
申请日：1981-07-20
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： OKADA KUNIHIRO , ENDOU HIROHIDE , SAITOU SUSUMU , KATAOKA KEIJI
IPC分类号： G03G15/22 , B41J2/44 , G03G15/04 , G06K15/12 , H04N1/113 , H04N1/23
摘要： PURPOSE:To obtain a multifunction type laser printer provided with an image input function with use of a laser beam and its optical system, by winding a paper containing an image to be inputted around a photosensitive drum, irradiating the paper with the laser beam and receiving the reflected light at a photoelectric transducer. CONSTITUTION:An original 21 is taken out of a hopper 20 and wound round a drum 101. A laser light source 12 is driven, and the laser beam 120 is condensed on the original 21. Then the original 21 is scanned horizontally. The light reflected from the original 21 is made incident to a photoelectric surface which is opposite to the reflecting surface of a photoelectric transducer 24 and has a structure long in the horizontal direction. The reflected light is converted into an electric signal corresponding to the intensity of the reflected light produced based on the contrast of the original. An electric signal W is delivered as the laser beam moves horizontally and then converted 25 into a digital signal to be stored in a memory 26 in the form of the picture information.

9. 发明专利

JPS5249840A LIGHT LINE PRINTER 失效
公开(公告)号：JPS5249840A
公开(公告)日：1977-04-21
申请号：JP12575375
申请日：1975-10-18
申请人： HITACHI LTD
发明人： KAMIYANAGI KIICHI , SAITOU SUSUMU , ARIMOTO AKIRA , KATAOKA KEIJI
IPC分类号： G02B27/00 , B41J2/44 , G02F1/29 , G03G15/04 , G03G17/00
摘要： PURPOSE:To enable a dot of a distinct boundary with less laser light by rendering a light intensity to be approximately 1/e of the central portion at the surrounding portion of a printing dot, and equal to the intensity required for the light sensitization.

10. 发明专利

JPS5230453A PATTERN MATCHING DEVICE 失效
公开(公告)号：JPS5230453A
公开(公告)日：1977-03-08
申请号：JP10653775
申请日：1975-09-04
申请人： HITACHI LTD
发明人： YAMAGUCHI HIROSHI , NAKAGAWA YASUO , OSHIDA YOSHISADA , KATAOKA KEIJI , TATENO KIMIO
IPC分类号： G02B5/32 , G02B21/18 , G02B27/02
摘要： PURPOSE:In an optical system for generating a number of images, it is intended to highly accurately effect pattern alignment by permitting the light diffracted in a lens hologram array to be bent by means of a half mirror for image formation and observing the surface of the formed image through said mirror by means of an observing optical system.

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