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公开(公告)号：JPH05145148A
公开(公告)日：1993-06-11
申请号：JP30910391
申请日：1991-11-25
Applicant: SONY CORP
Inventor： KANEDA YUJI , OKA MICHIO
Abstract: PURPOSE:To enable an excitation efficiency (oscillation efficiency) to be improved and an aberration of an output laser light to be reduced by forming one of a pair of reflecting mirrors to be a curved surface mirror. CONSTITUTION:An equi-refractivity line of a refractivity distribution of a thermal lens at a part that a plurality of pumping light beams 8 of a solid state laser medium 6 are incident on becomes a concentric circle with each incidence point of the pumping light 8 as a center. Therefore, a plurality of excitation regions 7 of the solid state laser medium 6 match each oscillation region, thus enabling an excitation efficiency (oscillation efficiency) to be improved and at the same time a wave front distortion of the output laser beam 9 to be eliminated for reduced aberration of the output laser beam.
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公开(公告)号：JPH02148875A
公开(公告)日：1990-06-07
申请号：JP30254288
申请日：1988-11-30
Applicant: SONY CORP
Inventor： OKA MICHIO
Abstract: PURPOSE:To obtain coherent high power laser light by splitting first laser light in a single mode into a plurality of laser lights, injecting and synchronizing the laser lights into a plurality of laser light sources, synthesizing a plurality of emitted oscillated laser lights, and taking out the laser light. CONSTITUTION:Master laser light L14 is rotated by -90 deg. in a third HWP 20. Then, the light is inputted into the light emitting region of the edge face of a second broad area laser 22 which is arranged so that the current stripe direction and pressure vector direction are provided in the direction in parallel with the surface of the paper. In this way, fourth and fifth master laser lights L13 and L14 are injected and synchronized in the first and second broad area lasers 19 and 22. Thus, first and second oscillated laser light L20 and L21, which are oscillated at the same frequency and have the equal frequency, are emitted. The oscillated laser lights L20 and L21 are synthesized in a second PBS 16. The first synthesized laser light L22 having the polarizing direction which is rotated by +45 deg. with respect to the oscillated laser light L20 is outputted.
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公开(公告)号：JPH02148874A
公开(公告)日：1990-06-07
申请号：JP30254188
申请日：1988-11-30
Applicant: SONY CORP
Inventor： OKA MICHIO
Abstract: PURPOSE:To output high power laser light accurately by injecting and synchronizing laser light which is obtained from a single-mode laser through a polarization splitting optical system and anamorphic prisms, polarizing and splitting the laser light emitted from a broad area laser, and taking out the output laser light. CONSTITUTION:First taking light L10 obtained from a single-mode laser 3 is injected and synchronized in a broad area laser 1 through a polarization splitting optical system comprising units 12, 5 and 13 and anamorphic prisms 14. Second laser light L20 emitted from the broad area laser 1 is polarized and split in the poralization splitting optical system comprising the units 13, 5 and 12 through the anamorphic prisms 14, and output laser light L21 is taken out. In this way, the high power, coherent laser light L21 in a single mode can be outputted accurately.
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公开(公告)号：JPH0228980A
公开(公告)日：1990-01-31
申请号：JP17979188
申请日：1988-07-18
Applicant: SONY CORP
Inventor： OKA MICHIO
Abstract: PURPOSE:To improve efficiency at a time when the sum-frequency laser beams and/or difference-frequency laser beams of first and second laser beams are generated remarkably by arranging a nonlinear type optical crystal element into the resonator of first laser beams while satisfying the conditions of external resonance to second laser beams by the resonator. CONSTITUTION:Laser beams L4 for converting a wavelength emitted from a second semiconductor laser 12 for converting the wavelength are projected to a beam splitter 11 through an objective 13, and a nonlinear type optical crystal element 7 is selected at a specified azimuth phi=68-73[deg] to the oscillation laser beams L2 of an Nd:YAG laser 6 projected and the laser beams L4 for converting the wavelength emitted from the semiconductor laser 12 for converting the wavelength. Accordingly, the light intensity of the second laser beams L4 projected to the nonlinear type optical crystal element 7 can be increased remarkably, thus acquiring sum-frequency laser beams L5 and differential-frequency laser beams with high efficiency.
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公开(公告)号：JPH01143026A
公开(公告)日：1989-06-05
申请号：JP30126987
申请日：1987-11-28
Applicant: SONY CORP
Inventor： OKA MICHIO
Abstract: PURPOSE:To execute adjustment so that an optical spot can be properly formed on a pair of tripartite detectors by arranging a pair of the tripartite detectors so that respective dividing lines can be crossed. CONSTITUTION:A pair of tripartite detectors 22 and 23 are arranged with being inclined only by a prescribed angle theta10, in which a code is different, to a central line 21L of a substrate 21 to be composed by connecting the centers of the detectors so that respective dividing lines L22A, L22B, L23A and L23B can be crossed. Even when the substrate 21 and a polarizing beam splitter 9 are fit in a dislocating condition, the adjustment can be executed so that optical spots SP31 and 32 can be properly formed respectively on a pair of the three-dividing detectors 22 and 23 by wholly moving a focus photodetecting device 20 only with arbitrary adjusting quantity in X-axis and Y-axis directions on a plain to include the substrate 21.
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Patent Agency Ranking
公开(公告)号：JPH01140113A
公开(公告)日：1989-06-01
申请号：JP29883187
申请日：1987-11-26
Applicant: SONY CORP
Inventor： KUBOTA SHIGEO , OKA MICHIO
Abstract: PURPOSE:To obtain an objective lens which is small in size and light in weight, prevents the spherical aberration by windows and has a sufficient working distance by using a material having a relatively high refractive index and forming the 1st face and 2nd face of hyperboloid of revolution. CONSTITUTION:The objective lens 5 is formed to a meniscus shape by using ZnS and has 2.286 refractive index to light of lambda=0.78mum. The 2nd face 52 on the disk side of the 1st face 51 on the side opposite to the disk 2 has the distance Z expressed by equation from the reference plane in the radial distance y from the lens axis. A curvature C0, constant K and A-D, lens thickness d0 are selected. A numerical aperture NA, a focal length F and the working distance (d) are so determined as to attain prescribed values and K is set smaller than -1, the faces 51, 52 are formed of the hyperboloid of revolution. The presence of the spherical aberration is obviated and the sufficient working distance (d) is taken without making similar expansion in spite of the presence of the windows between the objective lens and the optical disk if the shape of the lens faces is designed by taking the windows 3W, 1W into consideration as well. The objective lens which is small in size and light in weight is thus obtd.
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公开(公告)号：JP2011164151A
公开(公告)日：2011-08-25
申请号：JP2010023597
申请日：2010-02-04
Inventor： FURUDATE RYO , OKA MICHIO , KIMURA KAORU
IPC: G03B21/14 , G02F1/13 , G02F1/13357 , G03B21/00
CPC classification number: H04N9/3161 , G03B21/2033 , G03B33/12
Abstract: PROBLEM TO BE SOLVED: To provide an illumination device having a constitution which is low in cost and simple in constitution, and capable of reducing visibility in an interference fringe, and to provide a projection type image display device. SOLUTION: The illumination device 1a includes: a laser light source 10; and an optical member (for example, a fly-eye lens 12 and a condenser lens 13) that spatially divides incident light based on emitted light from the laser light source 10, multiplexes the divided light along a predetermined direction (multiplexing direction) toward an emitting surface and emits the multiplexed light. An axial direction of the light entering the fly-eye lens 12 in which coherency is high and directions of multiplexing by the condenser lens 13 are different from one another, and thereby it is possible to prevent the light divided by the fly-eye lens 12 from being multiplexed along the axial direction in which the coherency is high in the condenser lens 13. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：提供一种具有成本低且构造简单并且能够降低干涉条纹的可见性的结构的照明装置，并且提供投影型图像显示装置。
解决方案：照明装置1a包括：激光光源10; 以及基于来自激光光源10的发射光空间地分离入射光的光学部件（例如，飞眼透镜12和聚光透镜13），将沿着规定方向（复用方向）的分割光朝向 并发射多路复用光。 进入透镜12的光的相干性高，聚光透镜13的复用方向彼此不同，因此可以防止由飞毛透镜12分割的光 在聚光透镜13中沿着一致性高的轴向多路复用。（C）2011年，JPO和INPIT
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公开(公告)号：JP2009010220A
公开(公告)日：2009-01-15
申请号：JP2007171009
申请日：2007-06-28
Inventor： KIMURA KAORU , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To simplify adjustment in a laser light source device.
SOLUTION: The laser light source device comprises an excitation light source 1, a pair of resonator mirrors 4 and 8, and a laser medium 5 and a wavelength conversion element 7 in a resonator 30 constituted between the resonator mirrors 4 and 8, and a reflection part 6 for turning back an optical path is provided in a resonance optical path between the laser medium 5 and the wavelength conversion element 7. The laser medium 5 and the wavelength conversion element 7 are integrated, and simultaneously moved for adjustment.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：为了简化激光光源装置的调整。 解决方案：激光光源装置包括在共振镜4和8之间构成的谐振器30中的激发光源1，一对谐振镜4和8以及激光介质5和波长转换元件7， 并且在激光介质5和波长转换元件7之间的共振光路中设置有用于折回光路的反射部分6.激光介质5和波长转换元件7被一体化，同时移动以进行调节。 版权所有（C）2009，JPO＆INPIT
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49.发明专利
公开(公告)号：JP2008185628A
公开(公告)日：2008-08-14
申请号：JP2007016652
申请日：2007-01-26
Inventor： OKA MICHIO , TAJIRI SHINICHIRO
CPC classification number: G02B19/0057 , G02B19/0014 , G02B27/0927 , G02B27/0966 , G02B27/285 , H01S3/005 , H01S5/005 , H01S5/4012 , H01S5/4025 , H01S5/4031
Abstract: PROBLEM TO BE SOLVED: To suppress the occurrence of interference fringe caused by interference between luminous fluxes in a basic cycle for splitting light rays and in the double cycle of the basic cycle when the light rays emitted from a light source is split, superposed and uniformed.
SOLUTION: The laser light source device is equipped with: the light source 1; a wavefront splitting part 21 splitting the wavefront of emitted light rays from the light source 1; a wavefront composing part 22 guiding the light from the wavefront splitting part to a body to be irradiated 11 and also superposing the split wavefront; and a polarization conversion part 5 rotating the plane of polarization of the luminous flux that is a part of the luminous flux split in the wavefront splitting part 21. The polarization conversion part 5It is provided with wavelength plates 5A1 and 5A2 different in optical axis direction.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题为了抑制当从光源发射的光线被分裂时，在用于分割光线的基本循环中的光通量与基本循环的双重循环中的光束之间的干扰的发生， 叠加和制服。
解决方案：激光光源装置配备有：光源1; 分离来自光源1的发射光线的波前的波前分割部21; 波阵面构成部分22，其将来自波前分割部分的光引导到待照射的物体11，并且还叠加分裂波前; 以及偏振转换部5，其使作为在波前分割部21中分割的光束的一部分的光束的偏振面旋转。偏振转换部5It设置有在光轴方向上不同的波长板5A1,5A2。 版权所有（C）2008，JPO＆INPIT
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50.发明专利Laser unit, optical adjusting method thereof, optical apparatus, and its assembling method 审中-公开激光单元，光学调整方法，光学装置及其组装方法
公开(公告)号：JP2006108501A
公开(公告)日：2006-04-20
申请号：JP2004295167
申请日：2004-10-07
Inventor： KIMURA KAORU , AZUMA KATSUHIRO , FUKUI TATSUO , OKA MICHIO
IPC: H01S5/022
Abstract: PROBLEM TO BE SOLVED: To provide an optical adjusting method of a laser unit which can comparatively simply obtain the laser unit in which a beam exiting position, a beam exiting direction, and a focal position of a laser output for use are highly accurately adjusted, and to provide an optical apparatus using the laser unit, and a method for assembling the optical apparatus.
SOLUTION: In the optical adjusting method of the laser unit 50 comprising at least a laser 1, an optical member 2, one or more holding members 3, 5 for holding the laser 1 and/or the optical member 2, and a heat discharging member 4, the optical member 2 is fixed on the holding member 3, the laser 1 is directly or indirectly thermally brought into contact with the heat discharging member 4, and in an exiting state of laser beam L, the exiting position and the exiting direction of the laser 1 to the optical member 2 are optically adjusted.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供一种激光单元的光学调节方法，其可以相对简单地获得激光单元，其中离开位置的光束出射方向和激光输出的焦点位置是高度的 并且提供使用激光单元的光学装置，以及组装光学装置的方法。 解决方案：在至少包括激光器1的激光单元50的光学调节方法中，光学构件2，用于保持激光器1和/或光学构件2的一个或多个保持构件3,5，以及 放热构件4，光学构件2固定在保持构件3上，激光器1直接或间接地热地与放热构件4接触，并且在激光束L的出射状态下，出射位置和 对光学构件2的激光器1的出射方向进行光学调节。 版权所有（C）2006，JPO＆NCIPI
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