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公开(公告)号：JP2007331983A
公开(公告)日：2007-12-27
申请号：JP2006166328
申请日：2006-06-15
Inventor： MIZUNO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To prevent the horizontal generation of minute cracks in a glass substrate and to enable only a good groove formation in the perpendicular direction.
SOLUTION: A groove for cutting is formed on a glass surface by the sweeping bombardment of a short pulsed laser light with a pulse width of 100 ps or lower. Because the remaining stress and thermal strain accompanying plastic deformation are not generated theoretically, the generation of minute cracks can be controlled or avoided and only a perpendicular groove is formed well. Therefore, stable glass cutting is realized and a cut glass substrate having a stable and sufficient bending strength is provided.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：为了防止玻璃基板中的微小裂纹的水平产生，并且仅能够在垂直方向上形成良好的槽。 解决方案：通过对脉冲宽度为100ps或更低的短脉冲激光进行扫描轰击，在玻璃表面上形成用于切割的槽。 由于理论上不产生伴随塑性变形的剩余应力和热应变，因此可以控制或避免微小裂纹的产生，并且仅形成垂直的槽。 因此，实现了稳定的玻璃切割，并提供了具有稳定且足够的弯曲强度的切割玻璃基板。 版权所有（C）2008，JPO＆INPIT
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2.发明专利
公开(公告)号：JP2004046916A
公开(公告)日：2004-02-12
申请号：JP2002199221
申请日：2002-07-08
Inventor： MIZUNO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium reproducing device wherein the interval between recording layers can be reduced and to provide an optical recording medium. SOLUTION: The optical recording medium reproducing device is provided with the optical recording medium having a plurality of the recording layers from which information can be optically read and a tracking layer wherein a plurality of pits are formed along the track of the recording layer. Since tracking can be performed with the pits formed in the tracking layer, need for disposing a mechanism for tracking in the recording layers is reduced and the intervals between the recording layers adjacent to each other can be suitably made thin. Read-out of information from the recording layers and formation of tracking error signals from the tracking layer can be performed at first and second light emission parts and first and second light receiving parts, respectively. Since read-out of information and formation of the tracking error signals can be performed separately at the light emission part and the light receiving part, reliability of the optical recording medium reproducing device can be enhanced. COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：提供一种光记录介质再现装置，其中可以减少记录层之间的间隔并提供光记录介质。 解决方案：光记录介质再现装置设置有具有多个记录层的光学记录介质，从该记录层可以光学地读取信息，并且沿着记录层的轨道形成多个凹坑的跟踪层 。 由于可以在跟踪层中形成的凹坑进行跟踪，所以需要设置用于在记录层中进行跟踪的机构，并且彼此相邻的记录层之间的间隔可以适当地变薄。 可以在第一和第二发光部分以及第一和第二光接收部分分别执行从记录层读取信息和从跟踪层形成跟踪误差信号。 由于可以在发光部分和光接收部分分别执行信息的读出和跟踪误差信号的形成，所以可以提高光学记录介质再现装置的可靠性。 版权所有（C）2004，JPO
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3.发明专利
公开(公告)号：JP2004029050A
公开(公告)日：2004-01-29
申请号：JP2002175459
申请日：2002-06-17
Inventor： MIZUNO TAKESHI , YAMADA TAKATOSHI
CPC classification number: G11B7/1275 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
Abstract: PROBLEM TO BE SOLVED: To provide an objective lens for reproducing an optical recording medium and an optical recording medium reproducing device performing the reproduction or the like of an optical recording medium with the light beams of several kinds of wavelength with simple constitution. SOLUTION: The objective lens is constituted of 1st and 2nd lenses consisting of a crown system and a flint system respectively, whereby nearly the same optical characteristic is secured in several kinds of wavelength, especially, both in the wavelength regions of 650nm and 405nm. As a result, the single objective lens can cope with the several kinds of wavelength, and the constitution of the optical recording medium reproducing device is simplified. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2002022606A
公开(公告)日：2002-01-23
申请号：JP2000202704
申请日：2000-07-04
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI , YAMADA TAKATOSHI
Abstract: PROBLEM TO BE SOLVED: To obtain an equipment which can measure aberration even of an objective lens having a high numerical aperture of NA>1 by optical interference measurement. SOLUTION: When the optical aberration of an objective lens having a numerical aperture of NA>1 is measured by optical interference measurement, a hemispherical reference mirror is disposed such that the planar part thereof faces the bottom face of the objective lens and a matching oil is placed between the bottom face of the objective lens and the planar part of the hemispherical reference mirror. Optical axes of the objective lens and the hemispherical reference mirror are then aligned to constitute one optical path of an interference system. In case of an SIL or an SIM, incident light is totally reflected on the bottom face (recording/reproducing plane) and the light does not propagates to the outside of the lens. The hemispherical reference mirror is disposed such that the planar part thereof abuts on the bottom face in order to avoid total reflection conditions on the bottom face thus constituting a transmission optical system.
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公开(公告)号：JP2000163789A
公开(公告)日：2000-06-16
申请号：JP33288898
申请日：1998-11-24
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI , NARUI HIRONOBU , OKI YUTAKA
Abstract: PROBLEM TO BE SOLVED: To reduce the number of optical components, and simplify the alignment at the time of setting their optical arrangement, and not only simplify, miniaturize the entire device but also facilitate the manufacture thereof with respect to an optical device such as an optical pickup. SOLUTION: This optical device 10 is provided with a light emitting element LD, light receiving elements PD1, PD2A, PD2B, PD3, and an optical path control element M having at least one or more of the functions that are a function of branching or directionally controlling rays of light LF radiated from a light emitting element LD, a function of separating, branching, or directionally controlling the returned light LR reflected by an irradiated part 2, or a function of guiding the returned light LR to the light receiving elements, and is constructed by comprising optical elements 11, 12, 13 on which the light emitting element LD, the light receiving elements PD1, PD2A, PD2B, PD3, and the optical path control element M are arranged on the same substrate 1 in a prescribed relative positional relation to each other.
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Patent Agency Ranking
公开(公告)号：JPH11354889A
公开(公告)日：1999-12-24
申请号：JP15469398
申请日：1998-06-03
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To simplify and miniaturize a device as a whole and at the same time obtain an appropriate focus error signal by simplifying alignment, when reducing the number of optical components and setting optical arrangement in an optical device, such as an optical pick-up. SOLUTION: This optical device is provided with an optical element, where a semiconductor laser LD, a reflection part 4 consisting of a plurality of reflection surfaces M1 , M2 , and M3 , and a photodetector PD are formed on the same semiconductor substrate 1 and a window structure element 20 that is provided, while covering the semiconductor laser LD, the reflection part 4, and the photodetector PD. The reflection part 4 is provided with a first reflection surface M1 for reflecting emitted light at least fromm the semiconductor laser and a second reflection surface M2 for applying a portion of returning light from a convergence means to the photodetector PD. Then, the window structure element 20 is provided with a light transmitting part 20w for transmitting a portion of the returning light and a light absorption part 23 for absorbing the returning light that, is directed towards the photodetector PD directly, without going through the reflection part 4.
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公开(公告)号：JPH11120581A
公开(公告)日：1999-04-30
申请号：JP29619397
申请日：1997-10-14
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To reduce the number of optical parts, to simplify an alignment, to stabilize a tracking signal and to facilitate manufacturing by a semiconductor process. SOLUTION: This device comprises an irradiated part 2 of an optical recording medium forming a pit on its reflection surface, a semiconductor part 7 in which a semiconductor laser LD, a semiconductor structure 4 and a phtodetector element PD are formed on the same semiconductor substrate 1 and a converging means 3 irradiating the irradiated part with a transmitted light beam LF from the semiconductor laser so that the beam is made to be converged, and converging the reflected light beam LR. The semiconductor structure has three reflection surfaces in the vicinity of the confocal point of the converging means 3, the photodetector element has first and second detector elements PDR, PDL receiving reflected light beams from the second and third reflection surfaces, these detector elements are quadri-sected, a first and second phase difference detecting signals are obtained by calculating detected signals in the divided detector elements from the diffracted light from one pit edge of a pit by means of a phase difference detecting method and a tracking error signal is obtained by calculating them.
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公开(公告)号：JPH1064084A
公开(公告)日：1998-03-06
申请号：JP21755696
申请日：1996-08-19
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide an optical device such as an optical pickup, etc., capable of reducing the number of optical parts and simplifying alignment when optical arrangement is set, having a characteristic of CLC constitution simplifying and miniaturizing a whole device, and further, stably obtaining a tracking signal such as a tracking error signal, etc., and easily performing manufacture by a semiconductor process. SOLUTION: This device is provided with a light emission part 4, a convergent means 3 and a light receiving means 5, and is constituted so that the device convergently radiates outgoing light LF from the light emission part 4 on a part 2 to be irradiated by the convergent means 3, and further, converges the return light LR reflected from the part 2 to be irradiated, and arranges the light receiving part 5 in the vicinity of a confocal point related to the return light LR from the part 2 to be irradiated of the convergent means 3, and the outgoing light from the light emission part 4 passes through a coaxial path to be light received in the light receiving part 5 in before and after it is reflected by the part 2 to be irradiated, and the optical device 10 detecting a push-pull signal in the light receiving part 5 and detecting the tracking error signal by using a coefficient obtained by partial differentiating the push-pull signal by a defocus amount is constituted.
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公开(公告)号：JPH09161310A
公开(公告)日：1997-06-20
申请号：JP32182395
申请日：1995-12-11
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI , DOI MASATO
Abstract: PROBLEM TO BE SOLVED: To make the optical device applied to an optical pickup, etc., compact and nonadjustive and also to easily detect a tracking servo signal, a focusing servo signal and a magneto-optical signal or the like. SOLUTION: In this device, a light emitting part 14 and a light receiving part 15 are formed on a common semiconductor substrate 16 and the outgoing light from the light emitting part 14 is converged and radiated on an irradiated part 12 by a converging means 18 and the light receiving part 15 is arranged in the vicinity of the confocal of the converging means 18. Moreover, this device has an optical element 17 detecting the return light from the irradiated part 12 by the light receiving part 15 and a wedge prism 20 on whose surface a reflection area is formed.
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公开(公告)号：JPH0856042A
公开(公告)日：1996-02-27
申请号：JP19243794
申请日：1994-08-16
Applicant: SONY CORP
Inventor： MIZUNO TAKESHI , MASUDA HISASHI
Abstract: PURPOSE:To provide an assembly methode of a laser resonator which can miniaturize a laser resonator which causes no interference between optical elements and can sufficiently obtain thermal response. CONSTITUTION:A laser resonator is mainly constituted of a light source part 11 for pumping, a laser resonator assembling part 15, and an optical system 16 for adjustment. Firstly, the optical axes of a laser oscillator 1 for pumping, an objective 2, and a laser oscillator 7 for adjestment are aligned. Secondly, a substrate 8 for the laser resonator is set on a specified position in the assembling part 15, and a nonlinear optical crystal element 5 is positioned and adjusted on the substrate 8, by referring the reflected light obtained by irradiating the optical mirror surface of the nonlinear optical crystal element 5 with a laser beam for adjustment. Then the optical crystal element 5 is bonded and fixed. Similarly a solid-state laser element 4 is positioned and adjusted on the substrate 8 for the laser resonator, and then bonded and fixed. The positining and adjusting of a quater-wavelength plate 3 is performed by using the pumping laser light from the laser oscillator 1 for pumping, according to the state of operation. And the plate 3 is bonded and fixed.
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