公开(公告)号：US5124835A

公开(公告)日：1992-06-23

申请号：US540933

申请日：1990-06-20

Applicant: Takashi Shibaguchi ,  Hiroyoshi Funato

Inventor： Takashi Shibaguchi ,  Hiroyoshi Funato

IPC: G02F1/29 ,  H04N1/04 ,  H04N1/40

CPC classification number: H04N1/0408 ,  G02F1/29 ,  H04N1/0402 ,  H04N1/0446 ,  H04N1/40037

Abstract: An optical scanning apparatus for scanning a beam of light from a light source over a target surface by a scanning mechanism to form an image on the target surface. The optical scanning apparatus includes an electro-optic lens provided in an optical path between the light source and the scanning mechanism, a plurality of electrodes being provided on top and bottom surfaces of the electro-optic lens for producing an electric field in a direction perpendicular to the direction of the optical path, and a voltage applying unit being connected to the electrodes. The electro-optic lens is made from an electro-optic medium, and has an ingress surface and and egress surface which are ground to exhibit an adequate electro-optic effect. The beam is cast on the target surface to produce a dot having an enlarged diameter in the vertical scanning direction and in the horizontal scanning direction due to the electro-optic effect of the electro-optic medium when the electric field is produced within the electro-optic lens.

Abstract translation: 一种光学扫描装置，用于通过扫描机构在目标表面上扫描来自光源的光束，以在目标表面上形成图像。 光学扫描装置包括设置在光源和扫描机构之间的光路中的电光透镜，多个电极设置在电光透镜的顶表面和底表面上，用于在垂直方向上产生电场 到光路的方向，并且电压施加单元连接到电极。 电光透镜由电光介质制成，并且具有进入表面和出射表面，其被研磨以表现出足够的电光效应。 光束在目标表面上铸造，以在电场产生电场时由于电光介质的电光效应而在垂直扫描方向和水平扫描方向上产生具有扩大直径的点， 光学镜头。

公开(公告)号：US5119452A

公开(公告)日：1992-06-02

申请号：US534718

申请日：1990-06-07

Applicant: Kiyoshi Yokomori ,  Yoshinobu Nakayama ,  Shigeyoshi Misawa ,  Tami Isobe ,  Syunsuke Fujita ,  Hiroyoshi Funato ,  Magane Aoki

Inventor： Kiyoshi Yokomori ,  Yoshinobu Nakayama ,  Shigeyoshi Misawa ,  Tami Isobe ,  Syunsuke Fujita ,  Hiroyoshi Funato ,  Magane Aoki

IPC: G02B6/34 ,  G02B6/42

CPC classification number: G02B6/4212 ,  G02B6/34 ,  G02B6/4204

Abstract: A high efficiency prism coupling device that comprises a substrate, an optical waveguide layer disposed on the substrate, a gap adjuster layer disposed on the waveguide layer and a prism secured to the gap adjuster layer through a dielectric adhesive agent. The gap adjuster layer has a refractive index which is lower than that of the waveguide layer. The gap adjuster layer has a recess formed therein for guiding an incident beam to the waveguide layer through a bottom portion thereof. The adhesive agent is disposed in and around the recess and has a refractive index which is higher than that of the waveguide layer. The prism is made from a dielectric material and disposed above the recess of the gap adjuster layer through the adhesive agent. The prism has a refractive index which is higher than that of the waveguide layer. The incident beam is introduced from outside through the prism, the adhesive agent and the bottom portion of the recess to the waveguide layer.

Abstract translation: 一种高效率的棱镜​​耦合器件，包括衬底，设置在衬底上的光波导层，设置在波导层上的间隙调节器层和通过介电粘合剂固定到间隙调节器层的棱镜。 间隙调整层的折射率低于波导层的折射率。 间隙调整器层具有形成在其中的凹部，用于通过其底部将入射光束引导到波导层。 粘合剂设置在凹部中和周围，并且具有比波导层的折射率高的折射率。 棱镜由介电材料制成，并通过粘合剂设置在间隙调节器层的凹槽之上。 棱镜的折射率高于波导层的折射率。 入射光束从外部通过棱镜，粘合剂和凹部的底部引入波导层。

公开(公告)号：US5031978A

公开(公告)日：1991-07-16

申请号：US568409

申请日：1990-08-16

Applicant: Takashi Shibaguchi ,  Hiroyoshi Funato

Inventor： Takashi Shibaguchi ,  Hiroyoshi Funato

IPC: G06K15/12 ,  H04N1/036 ,  H04N1/113

CPC classification number: G06K15/1209 ,  H04N1/036 ,  H04N1/1135

Abstract: A recording optical system includes a semiconductor laser for emitting a light beam and a shutter device for changing the spot size of the light beam. The shutter device has a shutter array in which a plurality of shutter elements are arranged in a line, each of the shutter elements being controlled so as to be opened and shut in accordance with a gradational image. The recording optical system also has a deflection optical system for deflecting the light beam which passes through the shutter device and an image formation optical system for focusing the light beam which is deflected by the deflection optical system on a recording medium, so that the light beam scans the recording medium to form the image.

Abstract translation: 记录光学系统包括用于发射光束的半导体激光器和用于改变光束的光斑尺寸的快门装置。 快门装置具有快门阵列，其中多个快门元件被排成一行，每个快门元件根据渐变图像被控制为打开和关闭。 记录光学系统还具有用于偏转通过快门装置的光束的偏转光学系统和用于将由偏转光学系统偏转的光束聚焦在记录介质上的成像光学系统，使得光束 扫描记录介质以形成图像。

公开(公告)号：US4876680A

公开(公告)日：1989-10-24

申请号：US93368

申请日：1987-09-04

Applicant: Shigeyoshi Misawa ,  Hiroyoshi Funato

Inventor： Shigeyoshi Misawa ,  Hiroyoshi Funato

IPC: G11B7/12

CPC classification number: G11B7/124

Abstract: An optical pick-up for use in an optically information recording and reproducing apparatus is provided. The pick-up includes a substrate on which an optical waveguide layer is formed and a grating coupler is formed on the optical waveguide layer. Photosensors are also provided to receive light travelling along the waveguide from the grating coupler. A beam splitter is also formed on the substrate for splitting the light from the grating coupler into two separate light beams before reception by the photosensors. If the substrate is opaque, the substrate is formed with an opening through which light emitted from a light source passes. An objective lens is also provided for focusing the light emitted from the light source onto the information recording surface of an optical disc. A quarter wavelength plate may also be provided to change the nature of polarization of the light used.

Abstract translation: 提供了用于光学信息记录和再现装置的光学拾取器。 拾取器包括其上形成有光波导层的基板，并且在光波导层上形成光栅耦合器。 还提供光电传感器以接收从光栅耦合器沿着波导传播的光。 分束器也形成在基板上，用于在由光电传感器接收之前将来自光栅耦合器的光分成两个分开的光束。 如果基板是不透明的，则基板形成有从光源发射的光通过的开口。 还提供了一种物镜，用于将从光源发射的光聚焦到光盘的信息记录表面上。 也可以提供四分之一波长板来改变所使用的光的偏振特性。

公开(公告)号：US4712852A

公开(公告)日：1987-12-15

申请号：US870079

申请日：1986-06-03

Applicant: Hiroyoshi Funato ,  Nobuo Banba

Inventor： Hiroyoshi Funato ,  Nobuo Banba

IPC: G02B5/32 ,  G02B26/10 ,  G03H1/04

CPC classification number: G02B26/106

Abstract: A hologram disk for deflecting a light beam in a hologram scanner includes a plurality of straight-line gratings formed by holograms in an annular pattern for deflecting the light beam. The line-to-line distance d.theta. between adjacent lines of each of said straight-line gratings is determined to meet, at least approximately, the following equation when said each straight-line grating is rotated through an angle .theta.R: ##EQU1## where .lambda. is the wavelength of the light beam and .alpha. is a proportionality constant. Therefore, the angle .theta.s through which the light beam is deflected is expressed by .theta.s=.alpha..multidot..theta.R.

Abstract translation: 用于使全息扫描仪中的光束偏转的全息光盘包括由用于偏转光束的环形图案的全息图形成的多条直线光栅。 当所述每条直线光栅旋转角度θR时，确定每个所述直线光栅的相邻线之间的线间距离dθ至少近似满足以下等式： 其中λ是光束的波长，α是比例常数。 因此，光束被偏转的角度θ由θs =α×θR表示。

公开(公告)号：US4149269A

公开(公告)日：1979-04-10

申请号：US837493

申请日：1977-09-28

Applicant: Michiharu Abe ,  Hiroyoshi Funato

Inventor： Michiharu Abe ,  Hiroyoshi Funato

IPC: G11C13/04 ,  G11C7/00 ,  G11C8/00

CPC classification number: G11C13/046 ,  G11C13/04

Abstract: A large number of closely spaced holograms are formed on a sheet, each hologram comprising an information portion and an identification portion. First scan means movably position the sheet relative to a reconstruction beam and a sensor means for reading a selected hologram. The sensor means reads the identification portion of the reconstructed hologram to determine whether said hologram is the selected hologram. If said hologram is the selected hologram, a second scan means is actuated to read the information area. If said hologram is not the selected hologram, the first scan means is actuated to move to the next hologram. The process is continued until the selected hologram is located. The identification area further comprises a density reference section which is read to produce a bias reference signal for combination with the information signals. In digital applications the bias reference signal establishes the quantization threshold. In analog applications the bias reference signal establishes the bias point for differential amplification.

Abstract translation: 在片材上形成大量紧密间隔的全息图，每个全息图包括信息部分和识别部分。 第一扫描装置可移动地将纸张相对于重建光束定位，以及用于读取所选择的全息图的传感器装置。 传感器装置读取重建的全息图的识别部分，以确定所述全息图是否是所选择的全息图。 如果所述全息图是所选择的全息图，则启动第二扫描装置以读取信息区域。 如果所述全息图不是所选择的全息图，则第一扫描装置被致动以移动到下一个全息图。 该过程一直持续到所选择的全息图位于。 识别区域还包括密度参考部分，其被读取以产生用于与信息信号组合的偏置参考信号。 在数字应用中，偏置参考信号建立量化阈值。 在模拟应用中，偏置参考信号建立差分放大的偏置点。

公开(公告)号：US09188674B2

公开(公告)日：2015-11-17

申请号：US13930030

申请日：2013-06-28

Applicant: Shuichi Suzuki ,  Mitsuru Nakajima ,  Kenichi Yoshimura ,  Shigeaki Imai ,  Tadashi Nakamura ,  Hiroyoshi Funato

Inventor： Shuichi Suzuki ,  Mitsuru Nakajima ,  Kenichi Yoshimura ,  Shigeaki Imai ,  Tadashi Nakamura ,  Hiroyoshi Funato

IPC: G01C3/08 ,  G01S17/02 ,  G01S7/481

CPC classification number: G01S17/02 ,  G01S7/4817

Abstract: Disclosed is a laser radar device including a modulated light beam generator that emits light beams to a target, a photodetector that receives reflected light; a reflected light condenser that condenses the reflected light; a rotator that rotates around a rotation axis; and mirrors included in the rotator that scan the light beams, and guide the reflected light to the reflected light condenser, wherein an angular detection range in a vertical direction is divided into a plurality of layers, wherein mirror surfaces of the mirrors are tilted by corresponding tilt angles relative to the rotation axis, the tilt angles being different from each other, wherein the modulated light beam generator emits the light beams in the vertical direction, the light beams having different emission angles, and wherein a difference between the emission angles corresponds to the angular detection range of one layer in the vertical direction.

Abstract translation: 公开了一种激光雷达装置，其包括向目标发射光束的调制光束发生器，接收反射光的光电检测器; 聚光反射光的反射光聚光器; 围绕旋转轴旋转的旋转体; 以及包括在扫描光束的旋转体中的反射镜，并将反射光引导到反射光聚光器，其中垂直方向上的角度检测范围被分成多个层，其中反射镜的镜面被相应的 相对于旋转轴的倾斜角度，倾斜角度彼此不同，其中调制光束发生器沿垂直方向发射光束，光束具有不同的发射角，并且其中发射角之间的差对应于 垂直方向上一层的角度检测范围。

公开(公告)号：US08587774B2

公开(公告)日：2013-11-19

申请号：US12696216

申请日：2010-01-29

Applicant: Hiroyoshi Funato ,  Shigeaki Imai ,  Koji Masuda ,  Hidemasa Suzuki

Inventor： Hiroyoshi Funato ,  Shigeaki Imai ,  Koji Masuda ,  Hidemasa Suzuki

IPC: G01C3/08

CPC classification number: G01S17/58 ,  G01P3/68 ,  G01P3/806 ,  G03G15/011 ,  G03G15/0194 ,  G03G2215/00645 ,  G03G2215/0129 ,  G03G2215/0141 ,  G03G2215/0196

Abstract: A velocity detecting device includes an image-pattern acquiring unit that includes a laser light source and an area sensor that acquires a one-dimensional or a two-dimensional image. The image-pattern acquiring unit includes a lens between a moving member and the area sensor, irradiates a beam emitted from the laser light source to the moving member to make a scattering light of the moving member scattered from the moving member on the area sensor by using the lens, and acquires an image pattern at a predetermined time interval in association with movement of the moving member. A velocity calculating unit calculates the velocity of the moving member by computing the image pattern acquired by the image-pattern acquiring unit. The lens is a reduced optical system that projects a reduced object onto the area sensor.

Abstract translation: 速度检测装置包括图像图案获取单元，其包括激光源和获取一维或二维图像的区域传感器。 图像图案获取单元包括在移动构件和区域传感器之间的透镜，将从激光源发射的光束照射到移动构件，以使移动构件的散射光从区域传感器上的移动构件散射， 使用透镜，并且以与移动构件的移动相关联的预定时间间隔获取图像图案。 速度计算单元通过计算由图像模式获取单元获取的图像图案来计算移动构件的速度。 透镜是将减少的物体投影到区域传感器上的缩小的光学系统。

公开(公告)号：US20080297870A1

公开(公告)日：2008-12-04

申请号：US12133086

申请日：2008-06-04

Applicant: Masanori KOBAYASHI ,  Hiroyoshi Funato ,  Kazuya Miyagaki

Inventor： Masanori KOBAYASHI ,  Hiroyoshi Funato ,  Kazuya Miyagaki

IPC: G02B26/08 ,  G02F1/13

CPC classification number: G02B26/124 ,  G02F1/133377 ,  G02F2001/311

Abstract: An optical scanning device including a light source, a deflection device to deflect a light beam from the light source, an image focus optical system to focus the light beam deflected by the deflection device on a scanned surface to form an image thereon and scan a surface by the light beam deflected by the deflection device to form an image thereon, a light path switching device provided between the light source and the deflection device, which switches a light path of the light beam emitted from the light source to deflect the light beam on different timings such that the light beam scans different surfaces.

Abstract translation: 一种光学扫描装置，包括光源，用于偏转来自光源的光束的偏转装置，用于将由偏转装置偏转的光束聚焦在扫描表面上的图像聚焦光学系统，以在其上形成图像并扫描表面 通过由偏转装置偏转的光束在其上形成图像，设置在光源和偏转装置之间的光路切换装置，其切换从光源发射的光束的光路以使光束偏转 不同的定时，使得光束扫描不同的表面。

公开(公告)号：US20060083472A1

公开(公告)日：2006-04-20

申请号：US11086282

申请日：2005-03-23

Applicant: Atsushi Sakai ,  Ikuo Katoh ,  Hiroyoshi Funato ,  Toshihiko Baba

Inventor： Atsushi Sakai ,  Ikuo Katoh ,  Hiroyoshi Funato ,  Toshihiko Baba

IPC: G02B6/10 ,  G02B6/26

CPC classification number: G02B6/1225 ,  B82Y20/00

Abstract: An optical delay element including a photonic crystal line defect optical waveguide is disclosed that has a large group refractive index and has small or nearly constant wavelength dispersion of the group refractive index in a wide wavelength region for practical use. The optical delay element includes a line defect optical waveguide formed in a photonic crystal structure, and the volume of the line defect optical waveguide is less than the volume of a single line defect optical waveguide. Thereby, the waveguide band of the line defect optical waveguide has two zero points in the third order dispersion curve of the line defect optical waveguide, and the sign of the third order dispersion curve is inverted near the zero points. Therefore, the waveguide band of the line defect optical waveguide is modified, and this enables expansion of the wavelength region having a large group refractive index, small wavelength dispersion of the group refractive index, and small wavelength dispersion of the speed of optical pulses.

Abstract translation: 公开了具有大的组折射率的光子晶体线缺陷光波导的光延迟元件，并且在实际使用的宽波长区域中具有小或几乎恒定的组折射率的波长色散。 光延迟元件包括以光子晶体结构形成的线缺陷光波导，线缺陷光波导的体积小于单线缺陷光波导的体积。 因此，线缺陷光波导的波导带在线缺陷光波导的三阶色散曲线中具有两个零点，三阶色散曲线的符号在零点附近反转。 因此，线缺陷光波导的波导带被修改，能够扩大组折射率较大的波长区域，组折射率的小波长色散和光脉冲速度的小波长色散。