公开(公告)号：US20080316590A1

公开(公告)日：2008-12-25

申请号：US12142428

申请日：2008-06-19

申请人： Kiminori MIZUUCHI ,  Hiroyuki Furuya ,  Koichi Kusukame ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto

发明人： Kiminori MIZUUCHI ,  Hiroyuki Furuya ,  Koichi Kusukame ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto

IPC分类号： G02F1/377

CPC分类号： G02F1/3775 ,  G02F2001/3503 ,  G02F2001/3507 ,  G02F2201/16

摘要： A short wavelength light source is provided with a fundamental wave light source for generating a fundamental wave, and a plurality of wavelength conversion elements made of nonlinear optical crystals having periodic polarization-inversion structures and adapted to convert a part of the fundamental wave into a second harmonic, and the nonlinear optical crystals of the plurality of wavelength conversion elements are different in material or composition. By converting the fundamental wave from the fundamental wave light source by the plurality of wavelength conversion elements, the generation of a thermal lens effect caused by light absorption can be suppressed to improve a high output resistance.

摘要翻译： 短波长光源设置有用于产生基波的基波光源，以及由具有周期性极化反转结构的非线性光学晶体制成的多个波长转换元件，并且适于将基波的一部分转换成第二 谐波，并且多个波长转换元件的非线性光学晶体的材料或组成不同。 通过由多个波长转换元件转换基波光源的基波，可以抑制由光吸收引起的热透镜效应的产生，从而提高高的输出电阻。

公开(公告)号：US20080158512A1

公开(公告)日：2008-07-03

申请号：US11884751

申请日：2006-02-24

申请人： Tetsuro Mizushima ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Kazuhisa Yamamoto

发明人： Tetsuro Mizushima ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Kazuhisa Yamamoto

IPC分类号： G03B21/14 ,  G02B5/30

CPC分类号： G03B21/208 ,  G02B5/3083 ,  G03B21/2033 ,  G03B21/2073 ,  G03B33/12 ,  G03B33/14 ,  H04N9/3129 ,  H04N9/3161

摘要： A two-dimensional image formation device of the present invention is provided with a spatial light modulation element (7) for modulating light having a linear polarization and emitted from a laser light source (1), and a depolarization means (21) for depolarizing the modulated light before it is incident on an image display surface. The light having a linear polarization is used before and after incidence of irradiated light to the spatial light modulation element (7), and the linear polarization of the irradiated light is depolarized after the modulation, whereby randomly polarized light is projected on a screen (11). Thereby, speckle noise is significantly reduced, and a high-definition image can be formed.

摘要翻译： 本发明的二维图像形成装置设置有用于调制具有线偏振光并从激光光源发射的光的空间光调制元件（7），以及去极化装置（21），用于使 调制光在其入射到图像显示表面之前。 具有线偏振的光在照射光入射到空间光调制元件（7）之前和之后使用，并且在调制之后照射光的线偏振被去极化，从而随机偏振光投射在屏幕（11）上 ）。 因此，斑点噪声显着降低，并且可以形成高清晰度图像。

公开(公告)号：US20050111335A1

公开(公告)日：2005-05-26

申请号：US10969919

申请日：2004-10-22

申请人： Kenichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Kenichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： G11B7/00 ,  G11B7/0065 ,  G11B7/13

CPC分类号： G11B7/131 ,  G11B7/0065

摘要： A holographic optical information playback apparatus for playing information that is recorded on a recording medium in a form of interference fringes is provided with a two-dimensional photoreceptor array which receives a two-dimensional array of light spots that is diffracted at the recording medium due to application of reference light onto the medium, and outputs a playback signal including information recorded on the recording medium. The two-dimensional photoreceptor array has a photoreceptor section in which plural photoreceptor cells for detecting the intensities of received lights are arranged so that a photoreceptive area corresponding to the light spot array is formed, and assigns plural photoreceptor cells are assigned to each light spot in the light spot array according to the irradiation position of the light spot array, whereby the light intensity of one light sport is detected using the output signals from the plural photoreceptor cells.

摘要翻译： 用于播放以干涉条纹形式记录在记录介质上的信息的全息光学信息重放设备设置有二维感光体阵列，其接收在记录介质处衍射的光点的二维阵列，因为由于 将参考光施加到介质上，并输出包括记录在记录介质上的信息的重放信号。 二维感光体阵列具有感光体部，其中配置有用于检测接收光的强度的多个感光体细胞，使得形成与光点阵列对应的感光区域，并将多个感光体细胞分配给每个光点 根据光点阵列的照射位置的光点阵列，由此使用来自多个感光体单元的输出信号来检测一次光线运动的光强度。

公开(公告)号：US06549346B2

公开(公告)日：2003-04-15

申请号：US09982278

申请日：2001-10-17

申请人： Hidenori Wada ,  Keiichi Matsuzaki ,  Seiji Nishino ,  Tetsuo Saimi ,  Kenichi Kasazumi ,  Masanari Mohri

发明人： Hidenori Wada ,  Keiichi Matsuzaki ,  Seiji Nishino ,  Tetsuo Saimi ,  Kenichi Kasazumi ,  Masanari Mohri

IPC分类号： G02B702

CPC分类号： G11B7/22 ,  G02B7/021 ,  G02B7/025

摘要： An objective lens assembly includes: at least two groups of lenses having a common optical axis: and at least two lens holders for respectively holding the at least two groups of lenses, wherein each of the lens holders has an end face perpendicular to the optical axis, and the lens holders are positioned such that the end face of one of the lens holders faces the end face of the other lens holder, and a gap between these end faces is filled with an adhesive agent for adhering the lens holders to each other.

摘要翻译： 物镜组件包括：具有共同的光轴的至少两组透镜;以及用于分别保持至少两组透镜的至少两个透镜保持器，其中每个透镜保持器具有垂直于光轴的端面 并且透镜保持器定位成使得其中一个透镜保持器的端面面对另一个透镜保持器的端面，并且这些端面之间的间隙填充有用于将透镜保持器彼此粘合的粘合剂。

公开(公告)号：US6115345A

公开(公告)日：2000-09-05

申请号：US888529

申请日：1997-07-07

申请人： Makoto Kato ,  Kenichi Kasazumi ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Kazuhisa Yamamoto

发明人： Makoto Kato ,  Kenichi Kasazumi ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Kazuhisa Yamamoto

IPC分类号： G06K7/10 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： B82Y10/00 ,  G06K7/10831 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1369 ,  G11B7/1387 ,  G11B7/1395 ,  G06K2207/1013 ,  G11B2007/13727

摘要： A linearly polarized light beam emitted from a coherent light source reaches a polarizing phase plate and is thereby divided into a primary beam and a subsidiary beam having a polarized light component perpendicular to the polarized light component of the primary beam and a double-humped pattern, in which the center position coincides with the center position of the primary beam and the principal portion is equal in size to the principal portion of the primary beam. The primary beam and the subsidiary beam are focused onto an information storage surface of an optical disk and reflected therefrom, so that they are separated again through polarization separation and individually detected by first to third optical detectors. The output signals from the first to third optical detectors are calculated by a differential calculator and outputted therefrom.

摘要翻译： 从相干光源发射的线偏振光束到达偏振相位板，从而分为初级光束和具有垂直于主光束的偏振光分量的偏振光分量的辅助光束和双峰值图案， 其中中心位置与主光束的中心位置一致，并且主要部分的大小与主光束的主要部分相等。 主光束和辅助光束被聚焦到光盘的信息存储表面上并从其反射，使得它们通过偏振分离再次分离并且由第一至第三光学检测器单独检测。 来自第一至第三光学检测器的输出信号由差分计算器计算并输出。