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1. 发明授权

US06552990B1 Optical head for two different disk thicknesses with a light beam diameter control device 有权
标题翻译：具有光束直径控制装置的两个不同光盘厚度的光头
公开(公告)号：US06552990B1
公开(公告)日：2003-04-22
申请号：US09180301
申请日：1998-11-05
申请人： Seiji Kajiyama , Yoichi Tsuchiya , Masato Yamada , Yasuyuki Kanou , Shuichi Ichiura
发明人： Seiji Kajiyama , Yoichi Tsuchiya , Masato Yamada , Yasuyuki Kanou , Shuichi Ichiura
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/08582 , G11B7/123 , G11B7/127 , G11B7/1362 , G11B7/1367 , G11B7/139 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup device which includes a semiconductor laser selectively generating a laser beam with a wavelength of 635 nm, a laser beam with a wavelength of 780 nm, and an optical device having a central region in which a hologram is formed and a peripheral region in which a diffraction grating is formed. In particular, the optical device is arranged immediately below an objective lens, and the central region allows transmission of the laser beam with the wavelength of 635 nm without any diffraction but increases the diameter of the teaser beam to the wavelength of 780 nm by diffraction. On the other hand, peripheral region allows transmission of the laser beam with the wavelength of 635 nm without any diffraction, but substantially shields the laser beam with the wavelength of 780 nm by diffraction. Thus, each laser beam with the wavelength 635 nm is transmitted through objective lens and focused on a signal recording surface of a DVD. The periphery of the laser beam with the wavelength of 780 nm is significantly diffracted by peripheral region of optical device and only the central portion of the laser beam enters objective lens while increasing its diameter. Thus, the laser beam with the wavelength of 780 nm is focused on a signal recording surface of a CD-R or a CD-ROM. Therefore, the optical pickup device is capable of compatibly reproducing the DVD, CD-R and CD-ROM.
摘要翻译：一种光拾取装置，包括选择性地产生波长为635nm的激光束的半导体激光器，波长为780nm的激光束，以及具有形成全息图的中心区域的光学元件和周边区域形成衍射光栅。特别地，光学装置被布置在物镜的正下方，并且中心区域允许透射具有635nm波长的激光束而没有任何衍射，但是通过衍射将前导光束的直径增加到780nm的波长。另一方面，外围区域允许透射波长为635nm的激光束而没有衍射，但是通过衍射基本上屏蔽了波长为780nm的激光束。因此，波长为635nm的每个激光束通过物镜透射并聚焦在DVD的信号记录表面上。波长为780nm的激光束的周围被光学器件的周边区域显着地衍射，并且只有激光束的中心部分在增加其直径的同时进入物镜。因此，将波长为780nm的激光束聚焦在CD-R或CD-ROM的信号记录面上。因此，光学拾取装置能够兼容地再现DVD，CD-R和CD-ROM。

2. 发明授权

US06181668B2 Optical pickup device and wavelength selective diffraction grating 失效
$Optical pickup device and wavelength selective diffraction grating$
标题翻译：光学拾取装置和波长选择性衍射光栅
公开(公告)号：US06181668B2
公开(公告)日：2001-01-30
申请号：US09125987
申请日：1998-08-28
申请人： Seiji Kajiyama , Yasuyuki Kanou , Masato Yamada , Yoichi Tsuchiya , Shuichi Ichiura
发明人： Seiji Kajiyama , Yasuyuki Kanou , Masato Yamada , Yoichi Tsuchiya , Shuichi Ichiura
IPC分类号： G11B712
CPC分类号： G11B7/1369 , G02B5/1828 , G11B7/0943 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B7/1372 , G11B2007/0006 , G11B2007/13727
摘要： The optical pickup device includes a two wavelength semiconductor laser (23) selectively generating a laser beam having the wavelength of 635 nm and laser beam having the wavelength of 780 nm, a collimator lens (24), a hologram (25) formed on a surface of collimator lens (24), a polarizing glass (22) having an annular polarizing region (40) and an objective lens (21). Hologram (25) does not diffract the laser beam having the wavelength of 635 nm, and diffracts outward the laser beam having the wavelength of 780 nm. Therefore, virtual light source of the laser beam having the wavelength of 780 nm comes closer to the collimator lens (24) than the light source of the laser beam having the wavelength of 635 nm. Therefore, objective lens (21) focuses the laser beam having the wavelength of 635 nm on a recording surface of a transparent substrate (31) of a DVD, and focuses the laser beam having the wavelength of 780 nm on a recording surface of a transparent substrate (32) of a CD-R. Accordingly, the optical pickup device is capable of reproducing both DVD and CD-R having transparent substrates of different thicknesses.
摘要翻译：光拾取装置包括选择性地产生波长为635nm的激光束和波长为780nm的激光束的双波长半导体激光器（23），准直透镜（24），形成在表面上的全息图（25）准直透镜（24），具有环形偏振片（40）和物镜（21）的偏光玻璃（22）。全息图（25）不会衍射具有635nm波长的激光束，并向外衍射具有780nm波长的激光束。因此，具有波长为780nm的激光束的虚拟光源比具有635nm波长的激光束的光源更靠近准直透镜（24）。因此，物镜（21）将具有635nm波长的激光束聚焦在DVD的透明基板（31）的记录表面上，并将具有780nm波长的激光束聚焦在透明的记录表面上 CD-R的底物（32）。因此，光学拾取装置能够再现具有不同厚度的透明衬底的DVD和CD-R。

3. 发明授权

US06574182B1 Optical pickup compatible with a plurality of types of optical disks having different thicknesses 失效
标题翻译：与具有不同厚度的多种类型的光盘兼容的光学拾取器
公开(公告)号：US06574182B1
公开(公告)日：2003-06-03
申请号：US09807415
申请日：2001-04-19
申请人： Masato Yamada , Seiji Kajiyama , Yasuyuki Kanou , Yoichi Tsuchiya
发明人： Masato Yamada , Seiji Kajiyama , Yasuyuki Kanou , Yoichi Tsuchiya
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/1362 , G11B7/1367 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
摘要： In an optical pickup device (10) including a laser light source (1) and an objective lens (7), an optical device (6) is provided that transmits a laser beam of 635 nm in wavelength emitted from a first semiconductor laser (1A) straightforwardly into the objective lens (7) while maintaining its incident intensity, and that selectively diffracts a laser beam of 780 nm in wavelength emitted from a second semiconductor laser (1B) to a desired direction while maintaining its incident intensity and directs only the predetermined center portion of the laser beam into the objective lens (7). The optical pickup device (10) records or reproduces a signal onto or from a plurality of types of optical disks differing in substrate thickness while directing a laser beam of sufficient intensity onto a signal recording plane.
摘要翻译：在包括激光光源（1）和物镜（7）的光学拾取装置（10）中，提供一种光学装置（6），其从第一半导体激光器（1A）发射的波长透射635nm的激光束）直接进入物镜（7），同时保持其入射强度，并且选择性地将从第二半导体激光器（1B）发射的波长的780nm的激光束衍射到期望的方向，同时保持其入射强度，并且仅引导预定的激光束的中心部分进入物镜（7）。光拾取装置（10）在将具有足够强度的激光束引导到信号记录平面上的同时，将信号记录在或不同于基板厚度不同的多种类型的光盘上。

4. 发明授权

US07351944B2 Beam irradiation device 失效
标题翻译：光束照射装置
公开(公告)号：US07351944B2
公开(公告)日：2008-04-01
申请号：US11283999
申请日：2005-11-22
申请人： Masato Yamada , Hitoshi Terasaki , Yoichi Tsuchiya , Shuichi Ichiura , Masahiro Higuchi , Mikio Ichihashi , Youichiro Goto , Yoshiaki Maeno
发明人： Masato Yamada , Hitoshi Terasaki , Yoichi Tsuchiya , Shuichi Ichiura , Masahiro Higuchi , Mikio Ichihashi , Youichiro Goto , Yoshiaki Maeno
IPC分类号： G01J1/32 , G02B27/40 , G02B26/08 , H01J3/14 , B41J2/47
CPC分类号： G01S17/42 , G01S7/4811 , G01S7/4817 , G01S7/491 , G01S17/48
摘要： In a beam irradiation device of the present invention, laser beams emitted from a semiconductor laser impinge on an irradiation lens supported by a lens actuator. The laser beams that have passed through the irradiation lens change in outgoing angle in the direction of a y-z plane as the lens actuator is driven. A laser beam scan in the target region is thus performed. A part of the laser beams that have passed through the irradiation lens is reflected and separated by a beam splitter. The separated beams are converged on a PSD through a converging lens. A DSP control circuit monitors a scan position of the laser beams that have passed through the irradiation lens based on a signal from the PSD. When an irradiation position has deviated from a scan trajectory, the DSP control circuit controls an actuator driving circuit to draw the irradiation position back onto the scan trajectory. This beam irradiation device can realize a smooth and stable beam scan operation with a simple construction.
摘要翻译：在本发明的光束照射装置中，从半导体激光器发射的激光束照射在由透镜致动器支撑的照射透镜上。当透镜致动器被驱动时，穿过照射透镜的激光束在y-z平面的方向上以出射角度改变。因此执行目标区域中的激光束扫描。已经通过照射透镜的激光束的一部分被分束器反射和分离。分离的光束通过会聚透镜会聚在PSD上。 DSP控制电路基于来自PSD的信号监视已经通过照射透镜的激光束的扫描位置。当照射位置偏离扫描轨迹时，DSP控制电路控制致动器驱动电路将照射位置反射回扫描轨迹。该光束照射装置能够以简单的结构实现平稳稳定的束扫描操作。

5. 发明申请

US20060113462A1 Beam irradiation device 失效
标题翻译：光束照射装置
公开(公告)号：US20060113462A1
公开(公告)日：2006-06-01
申请号：US11283999
申请日：2005-11-22
申请人： Masato Yamada , Hitoshi Terasaki , Yoichi Tsuchiya , Shuichi Ichiura , Masahiro Higuchi , Mikio Ichihashi , Youichiro Goto , Yoshiaki Maeno
发明人： Masato Yamada , Hitoshi Terasaki , Yoichi Tsuchiya , Shuichi Ichiura , Masahiro Higuchi , Mikio Ichihashi , Youichiro Goto , Yoshiaki Maeno
IPC分类号： H01J40/14
CPC分类号： G01S17/42 , G01S7/4811 , G01S7/4817 , G01S7/491 , G01S17/48
摘要： In a beam irradiation device of the present invention, laser beams emitted from a semiconductor laser impinge on an irradiation lens supported by a lens actuator. The laser beams that have passed through the irradiation lens change in outgoing angle in the direction of a y-z plane as the lens actuator is driven. A laser beam scan in the target region is thus performed. A part of the laser beams that have passed through the irradiation lens is reflected and separated by a beam splitter. The separated beams are converged on a PSD through a converging lens. A DSP control circuit monitors a scan position of the laser beams that have passed through the irradiation lens based on a signal from the PSD. When an irradiation position has deviated from a scan trajectory, the DSP control circuit controls an actuator driving circuit to draw the irradiation position back onto the scan trajectory. This beam irradiation device can realize a smooth and stable beam scan operation with a simple construction.
摘要翻译：在本发明的光束照射装置中，从半导体激光器发射的激光束照射在由透镜致动器支撑的照射透镜上。当透镜致动器被驱动时，穿过照射透镜的激光束在y-z平面的方向上以出射角度改变。因此执行目标区域中的激光束扫描。已经通过照射透镜的激光束的一部分被分束器反射和分离。分离的光束通过会聚透镜会聚在PSD上。 DSP控制电路基于来自PSD的信号监视已经通过照射透镜的激光束的扫描位置。当照射位置偏离扫描轨迹时，DSP控制电路控制致动器驱动电路将照射位置反射回扫描轨迹。该光束照射装置能够以简单的结构实现平稳稳定的束扫描操作。

6. 发明申请

US20060265147A1 Detection device 失效
标题翻译：检测装置
公开(公告)号：US20060265147A1
公开(公告)日：2006-11-23
申请号：US11405450
申请日：2006-04-18
申请人： Atsushi Yamaguchi , Yoshihisa Suzuki , Masato Yamada , Shuichi Ichiura
发明人： Atsushi Yamaguchi , Yoshihisa Suzuki , Masato Yamada , Shuichi Ichiura
IPC分类号： G06F19/00
CPC分类号： G01S7/481 , G01S7/497 , G01S17/936
摘要： An object of the present invention is to provide a detection device which does not cause the false detection by receiving laser light from an oncoming car. The pulse laser light modulated with a modulation pattern set every target position is irradiated at the target position from a laser irradiation portion. DSP (Digital Signal Processor) decides that there is an obstacle at the target position only when the modulation pattern of the pulse laser light emitted from the laser emitting portion matches with the modulation pattern of the pulse laser light received by the laser receiving portion. It is suppressed that the detection device misdetects the conditions of the target position when receiving laser light from an oncoming car or the like because modulation pattern of laser light from own does not match with modulation pattern of laser light from the oncoming car or the like.
摘要翻译：本发明的目的是提供一种通过接收来自迎面而来的轿厢的激光不会引起错误检测的检测装置。以每个目标位置设定的调制图案调制的脉冲激光在激光照射部分的目标位置被照射。只有当从激光发射部分发射的脉冲激光的调制图案与由激光接收部分接收的脉冲激光的调制图案匹配时，DSP（数字信号处理器）才确定目标位置处存在障碍物。抑制了当从迎面而来的轿厢等接收激光时检测装置误检目标位置的状况，因为来自其的激光的调制图案与迎面而来的轿厢等的激光的调制图案不匹配。

7. 发明授权

US07570346B2 Detection device 失效
标题翻译：检测装置
公开(公告)号：US07570346B2
公开(公告)日：2009-08-04
申请号：US11377449
申请日：2006-03-17
申请人： Atsushi Yamaguchi , Shinji Kobayashi , Masato Yamada , Shuichi Ichiura
发明人： Atsushi Yamaguchi , Shinji Kobayashi , Masato Yamada , Shuichi Ichiura
IPC分类号： G01C3/08
CPC分类号： G01S17/936 , G01C3/08 , G01S17/46
摘要： A scan trajectory of a laser beam is controlled based on external signals each related to a driving direction and a driving speed, a result obtained by detection of an obstacle, and signals related to distances to the obstacle. For example, at the time of a right turn, a scan trajectory for increasing scan frequency on a portion shifted in a right-turn direction from a center axis in a driving direction is set. At the time of high-speed driving, a scan trajectory for increasing scan frequency on a center portion in the driving direction is set. When the obstacle is detected at a position corresponding to a distance shorter than a threshold distance, a scan trajectory for increasing scan frequency in the vicinity of the obstacle is set. Detection and monitoring are performed at the time of: changing of the driving direction, the high-speed driving, and the detection of the obstacle.
摘要翻译：基于与驱动方向和驱动速度相关的外部信号，通过检测障碍物获得的结果以及与障碍物的距离相关的信号来控制激光束的扫描轨迹。例如，在右转时，设定用于增加扫描频率的扫描轨迹，该扫描轨迹用于沿着驱动方向从中心轴沿右转方向移动的部分增加扫描频率。在高速驱动时，设定用于增加驱动方向上的中心部分的扫描频率的扫描轨迹。当在对应于比阈值距离短的距离的位置处检测到障碍物时，设置用于增加障碍物附近的扫描频率的扫描轨迹。在改变驾驶方向，高速驾驶和障碍物的检测时进行检测和监视。

8. 发明申请

US20060244978A1 Detection device 失效
标题翻译：检测装置
公开(公告)号：US20060244978A1
公开(公告)日：2006-11-02
申请号：US11410049
申请日：2006-04-25
申请人： Masato Yamada , Shuichi Ichiura
发明人： Masato Yamada , Shuichi Ichiura
IPC分类号： G01B11/14
CPC分类号： G01S17/936 , G01S7/481 , G01S7/4972
摘要： An irradiation pattern of a laser beam within a target region is controlled based on external signals each related to a driving direction and a driving speed, a result obtained by detection of an obstacle, and signals related to distances to the obstacle. For example, at the time of a right turn, an irradiation pattern for increasing irradiation frequency on a portion shifted in a right-turn direction from a center axis in a driving direction is set. At the time of high-speed driving, an irradiation pattern for increasing irradiation frequency on a center portion of a forward region in the driving direction is set. When the obstacle is detected and a distance to the obstacle is shorter than a threshold distance, an irradiation pattern for increasing irradiation frequency in the vicinity of the obstacle is set. Detection of the obstacle and monitoring of a state thereof are adequately and smoothly performed at the time of changing of the driving direction, the time of high-speed driving, and the time of detection of the obstacle.
摘要翻译：基于与驱动方向和驱动速度相关的外部信号，通过检测障碍物获得的结果以及与障碍物的距离有关的信号来控制目标区域内的激光束的照射图案。例如，在右转时，设定用于增加沿着驱动方向的中心轴在右转方向上偏移的部分上的照射频率的照射图案。在高速驱动时，设定用于在驱动方向的前方区域的中心部分增加照射频率的照射图案。当检测到障碍物并且与障碍物的距离小于阈值距离时，设置用于增加障碍物附近的照射频率的照射模式。在改变行驶方向，高速行驶时间和障碍物的检测时间时，对障碍物的检测和状态的监视能够充分而平稳地进行。

9. 发明授权

US07605909B2 Detection device for detecting conditions at a target position 失效
标题翻译：用于检测目标位置的状况的检测装置
公开(公告)号：US07605909B2
公开(公告)日：2009-10-20
申请号：US11405450
申请日：2006-04-18
申请人： Atsushi Yamaguchi , Yoshihisa Suzuki , Masato Yamada , Shuichi Ichiura
发明人： Atsushi Yamaguchi , Yoshihisa Suzuki , Masato Yamada , Shuichi Ichiura
IPC分类号： G01C3/08
CPC分类号： G01S7/481 , G01S7/497 , G01S17/936
摘要： An object of the present invention is to provide a detection device which does not cause the false detection by receiving laser light from an oncoming car.The pulse laser light modulated with a modulation pattern set every target position is irradiated at the target position from a laser irradiation portion. DSP (Digital Signal Processor) decides that there is an obstacle at the target position only when the modulation pattern of the pulse laser light emitted from the laser emitting portion matches with the modulation pattern of the pulse laser light received by the laser receiving portion. It is suppressed that the detection device misdetects the conditions of the target position when receiving laser light from an oncoming car or the like because modulation pattern of laser light from own does not match with modulation pattern of laser light from the oncoming car or the like.
摘要翻译：本发明的目的是提供一种通过接收来自迎面而来的轿厢的激光不会引起错误检测的检测装置。以每个目标位置设定的调制图案调制的脉冲激光在激光照射部分的目标位置被照射。只有当从激光发射部分发射的脉冲激光的调制图案与由激光接收部分接收的脉冲激光的调制图案匹配时，DSP（数字信号处理器）才确定目标位置处存在障碍物。抑制了当从迎面而来的轿厢等接收激光时检测装置误检目标位置的状况，因为来自其的激光的调制图案与迎面而来的轿厢等的激光的调制图案不匹配。

10. 发明授权

US07566861B2 Detection device controlled by driving speed and driving direction 失效
标题翻译：检测装置由驱动速度和行驶方向控制
公开(公告)号：US07566861B2
公开(公告)日：2009-07-28
申请号：US11410049
申请日：2006-04-25
申请人： Masato Yamada , Shuichi Ichiura
发明人： Masato Yamada , Shuichi Ichiura
IPC分类号： G06M7/00 , B60Q1/00 , B62D1/24 , G01C3/08
CPC分类号： G01S17/936 , G01S7/481 , G01S7/4972
摘要： A detection device detects an obstacle within a target region by setting the target region, setting a scan trajectory, and setting a pattern of an irradiation position of a laser beam within the target region based on a signal related to a moving state of the detection device or a moving object on which the detection device is mounted.
摘要翻译：检测装置基于与检测装置的移动状态相关的信号，通过设定目标区域，设定扫描轨迹以及将目标区域内的激光束的照射位置的图案设定在目标区域内来检测目标区域内的障碍物或安装检测装置的移动物体。

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