专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5894345A Optical method of detecting defect and apparatus used therein 失效
标题翻译：检测缺陷的光学方法及其中使用的装置
公开(公告)号：US5894345A
公开(公告)日：1999-04-13
申请号：US859423
申请日：1997-05-20
申请人： Kenji Takamoto , Kanji Nishii , Masami Ito , Atsushi Fukui , Kazumasa Takata
发明人： Kenji Takamoto , Kanji Nishii , Masami Ito , Atsushi Fukui , Kazumasa Takata
IPC分类号： G01B11/30 , G01N21/88 , G01N21/89 , G01N21/956 , G01N21/00
CPC分类号： G01N21/8903
摘要： An array light source 1 with semiconductor laser sources disposed one-dimensionally and a projective lens 2 are used to illuminate an inspected object so that light beams projected from the array light source form a dotted line on the object. A line sensor is used to receive through an objective lens 3 light emitted from an imaging area 11 away from an illuminated area 12. An image signal, fed to an image processing unit 8 through a pre-processing unit 7 producing an image from signals from the line sensor 4 and a stage 5 is processed, while the stage 5 bearing the object 6 is being gradually moved, to inspect the object 6 for crack defects 9 and 10 by detecting an optically nonhomogeneous portion of the object. The method allows a crack defect of an object, such as a ceramic substrate or a sintered metal product, to be detected fast with high accuracy.
摘要翻译：使用具有一维设置的半导体激光源的阵列光源1和投射透镜2来照射被检查物体，使得从阵列光源投射的光束在物体上形成虚线。线传感器用于通过物镜3接收从成像区域11发出的远离照明区域12的光。图像信号，通过预处理单元7馈送到图像处理单元8，从预处理单元7产生来自在承载物体6的台架5正在逐渐移动的同时，对线传感器4和台5进行处理，通过检测物体的光学非均匀部分来检查物体6的裂纹缺陷9和10。该方法允许以高精度快速检测诸如陶瓷基板或烧结金属产品的物体的裂纹缺陷。

2. 发明授权

US5754341A Phase grating, its fabricating method, optical encoder, motor using the optical encoder, and robot using the motor 失效
标题翻译：相位光栅，其制造方法，光学编码器，使用光学编码器的电动机和使用电动机的机器人
公开(公告)号：US5754341A
公开(公告)日：1998-05-19
申请号：US661154
申请日：1996-06-10
申请人： Kazumasa Takata , Kanji Nishii , Kenji Takamoto , Masami Ito , Atsushi Fukui
发明人： Kazumasa Takata , Kanji Nishii , Kenji Takamoto , Masami Ito , Atsushi Fukui
IPC分类号： G01D5/38 , G02B5/18 , G02B27/46
CPC分类号： G02B5/1871 , G02B27/46 , Y10S359/90
摘要： A phase grating has a concave part of rectangular shape type substantially, of which grating depth is deeper in a specific range than depth d' calculated in a formula .vertline.n-n.sub.0 .vertline..times.(p-d'/e)/p.times.d'=(.lambda./2).times.(1+2m) (where m=0, .+-.1, .+-.2, . . . ) in terms of center wavelength .lambda. of light having partial interference to be diffracted by the phase grating, pitch length p of the phase grating, refractive index n of base material of the phase grating, refractive index n.sub.0 of medium surrounding the phase grating, and shape ratio e as the ratio of grating depth to width of slope of the concave part.
摘要翻译：相位光栅具有基本上为矩形形状类型的凹部，光栅深度在与公式| n-n0 | x（p-d'/ e）/ pxd'=（ λ/ 2）x（1 + 2m）（其中m = 0，+/- 1，+/- 2，...）就具有待被相位光栅衍射的部分干涉的光的中心波长λ 相位光栅的长度p，相位光栅的基材的折射率n，围绕相位光栅的介质的折射率n0，以及作为凹部的光栅深度与斜率宽度的比率的形状比e。

3. 发明授权

US5696373A Optical encoder with dual diffraction grating 失效
$Optical encoder with dual diffraction grating$
标题翻译：具有双衍射光栅的光学编码器
公开(公告)号：US5696373A
公开(公告)日：1997-12-09
申请号：US711513
申请日：1996-09-10
申请人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
发明人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
IPC分类号： G01B11/00 , G01D5/38 , G02B5/18 , G02B27/42 , G03F9/00 , H01J3/14
CPC分类号： G03F9/70 , G01D5/38
摘要： An optical encoder including a light source and a first grating plate having a first diffraction grating for diffracting a light beam emitted from the light source. The optical encoder further includes a second grating plate having a second diffraction grating including a blazed diffraction grating for further diffracting the light beam diffracted by the first diffraction grating so as to allow the light beam to be incident on the first grating plate. The optical encoder also includes a light-receiving portion for receiving the light beam reentering the first grating plate and diffracted by the first grating plate. The second diffraction grating is designed so that the greater part of the diffracted light is concentrated in diffracted light beam of a predetermined order among the light beams from the first diffraction grating, and the diffracted light beam of the predetermined order travels from the second diffraction grating in a direction which is parallel with a direction in which the light beam is incident on the second diffraction grating from the first grating plate. The light-receiving portion generates an electric signal in accordance with an amount of plus and minus mth-order diffracted light beams of the further diffracted light beam.
摘要翻译：一种光学编码器，包括光源和具有用于衍射从光源发射的光束的第一衍射光栅的第一光栅板。光学编码器还包括具有第二衍射光栅的第二光栅板，第二衍射光栅包括闪耀的衍射光栅，用于进一步衍射由第一衍射光栅衍射的光束，以允许光束入射在第一光栅板上。光学编码器还包括用于接收重新进入第一光栅板并被第一光栅板衍射的光束的光接收部分。第二衍射光栅被设计成使得衍射光的大部分集中在来自第一衍射光栅的光束之间的预定次数的衍射光束中，并且预定次数的衍射光束从第二衍射光栅行进在与第一光栅板上的光束入射到第二衍射光栅上的方向平行的方向上。光接收部分根据进一步的衍射光束的正和负的第m级衍射光束的量产生电信号。

4. 发明授权

US5986727A Back light illuminator for liquid crystal display apparatus 失效
标题翻译：背光灯用于液晶显示装置
公开(公告)号：US5986727A
公开(公告)日：1999-11-16
申请号：US833048
申请日：1997-04-03
申请人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito , Kazumasa Takata
发明人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito , Kazumasa Takata
IPC分类号： G02B6/00 , B60Q3/04 , F21V8/00 , G02B5/10 , G02F1/1335 , G02F1/13357 , B60Q1/26 , F21V7/04 , F21V9/16
CPC分类号： G02B6/0031 , B60Q3/004 , B60Q3/044 , B60Q3/046 , G02F1/133615
摘要： A back light illuminator for liquid crystal display apparatus comprises a fluorescent lamp, a light guide member, and a reflection plate enclosing the fluorescent lamp and an incident portion of the light guide member so as to reflect light rays toward the incident portion of the light guide member. The reflection plate has at least a curved portion having a parabolic cross-section or a elliptical cross-section so as not to reflect the light rays in a direction to the fluorescent lamp. Thus, absorption of reflected light by the fluorophor of the fluorescent lamp is minimized, and the luminance of the back light illuminator is increased.
摘要翻译：用于液晶显示装置的背光照明器包括荧光灯，导光构件和包围荧光灯的反射板和导光构件的入射部分，以便将光线朝向光导入射部分反射会员。反射板具有至少一个具有抛物面截面或椭圆形横截面的弯曲部分，以便不向与荧光灯的方向反射光线。因此，荧光灯的荧光体的反射光的吸收最小化，背光照射器的亮度增加。

5. 发明授权

US5980054A Panel-form illuminating system 失效
标题翻译：面板式照明系统
公开(公告)号：US5980054A
公开(公告)日：1999-11-09
申请号：US839232
申请日：1997-04-24
申请人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito , Kazumasa Takata , Ken Tatsuta , Koki Nakabayashi , Hiroshi Watanabe
发明人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito , Kazumasa Takata , Ken Tatsuta , Koki Nakabayashi , Hiroshi Watanabe
IPC分类号： F21V8/00 , G02B6/00 , F21V7/04
CPC分类号： G02B6/0038 , G02B6/0036 , G02B6/0061 , G02B6/0078 , G02B6/0046 , G02B6/0055 , G02B6/0056 , G02B6/0068
摘要： An efficient, luminous and energy-saving panel-form illuminating system suitable for mass-production, comprising at least a photoconductor, a linear light source at one side of the photoconductor, and a reflector; wherein grooves or protrusions are formed on the bottom surface of the photoconductor.
摘要翻译：一种适用于批量生产的高效，发光和节能的面板式照明系统，包括至少一个光电导体，在感光体一侧的线性光源和反射器; 其中在感光体的底表面上形成有凹槽或凸起。

6. 发明授权

US5734472A Method and appratus for measuring thickness of birefringence layer 失效
标题翻译：测量双折射层厚度的方法和应用
公开(公告)号：US5734472A
公开(公告)日：1998-03-31
申请号：US668136
申请日：1996-06-21
申请人： Masami Ito , Kanji Nishii , Kenji Takamoto , Atsushi Fukui
发明人： Masami Ito , Kanji Nishii , Kenji Takamoto , Atsushi Fukui
IPC分类号： G01B11/06 , G01M11/00 , G01N21/23 , G02F1/13 , G01N21/21
CPC分类号： G01N21/23
摘要： A liquid crystal layer is interposed between two polarizers arranged in a parallel Nicol or crossed Nicol manner, and a phase plate is set between two polarizers so that the transmission direction of the first polarizer coincides with the optical axis. Then, a rotation angle at which optical intensity transmitted through the second polarizer has an extreme value to be determined, and the thickness of the birefringence layer is calculated according to the rotation angle of the phase plate. In a different method, a half-wave plate is used. First, the liquid crystal layer is set at a position where an optical intensity of the transmission light has an extreme value, and the half-wave plate provided between the two polarizers is set so that a transmission direction of the first polarizer coincides with the optical axis. Then, a rotation angle of the phase plate is determined at which an optical intensity of light transmitted through the second polarizer has an extreme value. Then, the thickness is calculated according to the rotation angle of the half-wave plate. Thus, the thickness is measured in a short time even for a liquid crystal that does not have a twist angle of 90.degree. or in which the rubbing direction is not known.
摘要翻译：将液晶层插入以并联尼科耳或尼科尔方式排列的两个偏振器之间，将相位板设置在两个偏振器之间，使得第一偏振器的透射方向与光轴重合。然后，透过第二偏振片的光强度的旋转角度具有待确定的极值，并且根据相位板的旋转角度来计算双折射层的厚度。使用不同的方法，使用半波片。首先，将液晶层设置在透光光的光强度为极值的位置，设置在两个偏振器之间的半波片被设定为使得第一偏振器的透射方向与光轴。然后，确定透射通过第二偏振器的光的光强度具有极值的相位板的旋转角。然后，根据半波片的旋转角度来计算厚度。因此，即使对于不具有90°扭转角的液晶，或者摩擦方向不知道，也可以在短时间内测量厚度。

7. 发明授权

US5696374A Optical encoder using doubled diffraction angle based on first and second diffraction gratings 失效
$Optical encoder using doubled diffraction angle based on first and second diffraction gratings$
标题翻译：基于第一和第二衍射光栅的双重衍射角光学编码器
公开(公告)号：US5696374A
公开(公告)日：1997-12-09
申请号：US711598
申请日：1996-09-10
申请人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
发明人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
IPC分类号： G01B11/00 , G01D5/38 , G02B5/18 , G02B27/42 , G03F9/00 , G01B9/02
CPC分类号： G03F9/70 , G01D5/38
摘要： An optical encoder includes: a light source; a first grating plate having a first diffraction grating for diffracting a light beam emitted from the light source; a second grating plate having a second diffraction grating for further diffracting the light beam diffracted by the first diffraction grating; a reflector for reflecting the light beam from the second grating plate so as to allow the light beam to reenter the second grating plate; and a light-receiving portion for receiving the light beam reflected by the reflector and successively diffracted by the second and first grating plates, wherein a diffraction angle of plus and minus first-order diffracted light beams of the first diffraction grating is substantially equal to that of the plus and minus first-order diffracted light beams of the second diffraction grating, and the light-receiving portion generates an electric signal in accordance with the amount of the plus and minus first-order diffracted light beams of the first diffraction grating.
摘要翻译：光学编码器包括：光源; 第一光栅板，具有用于衍射从光源发射的光束的第一衍射光栅; 第二光栅板，具有用于进一步衍射由第一衍射光栅衍射的光束的第二衍射光栅; 用于反射来自第二光栅板的光束以使光束重新进入第二光栅板的反射器; 以及光接收部分，用于接收由反射器反射并被第二和第一光栅板连续衍射的光束，其中第一衍射光栅的正，负一级衍射光束的衍射角基本上等于第二衍射光栅的正，负一级衍射光束，并且光接收部分根据第一衍射光栅的正，负一级衍射光束的量产生电信号。

8. 发明授权

US5699153A Method and apparatus for optical inspection 失效
标题翻译：光学检测方法和装置
公开(公告)号：US5699153A
公开(公告)日：1997-12-16
申请号：US550682
申请日：1995-10-31
申请人： Kenji Takamoto , Kanji Nishii , Masami Ito , Atsushi Fukui
发明人： Kenji Takamoto , Kanji Nishii , Masami Ito , Atsushi Fukui
IPC分类号： G01B11/00 , G01N21/88 , G01N21/896 , G01N21/952 , G01N21/958
CPC分类号： G01N21/4795 , G01N21/88 , G01N2021/4735
摘要： The present invention provides an inspecting method and an apparatus therefor. A light illuminates an object to be inspected having optical diffusive characteristics such as a ceramics plate. A part of the light diffuses in the object from an illumination area is reflected at or passes through a defect such as a crack and reaches an imaging area. An image sensor detects the image of the imaging area. A signal showing a larger change is processed thereby to inspect the defect. The object is displaced stepwise relative to the light source and the image sensor. Thus, a crack or the like in an object can be inspected with high accuracy and at a high speed.
摘要翻译：本发明提供一种检查方法及其装置。光照射具有诸如陶瓷板的光漫射特性的待检查物体。来自照明区域的物体中的光的一部分被反射或穿过诸如裂纹的缺陷，并到达成像区域。图像传感器检测成像区域的图像。处理显示较大变化的信号，从而检查缺陷。物体相对于光源和图像传感器逐步移位。因此，可以高精度和高速度地检查物体中的裂纹等。

9. 发明授权

US5661295A Optical encoder with dual diffraction gratings 失效
$Optical encoder with dual diffraction gratings$
标题翻译：具有双衍射光栅的光学编码器
公开(公告)号：US5661295A
公开(公告)日：1997-08-26
申请号：US504708
申请日：1995-07-20
申请人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
发明人： Atsushi Fukui , Kanji Nishii , Kenji Takamoto , Masami Ito
IPC分类号： G01B11/00 , G01D5/38 , G02B5/18 , G02B27/42 , G03F9/00 , G01B9/02 , H01J3/12
CPC分类号： G03F9/70 , G01D5/38
摘要： An optical encoder includes: a light source; a first grating plate having a first diffraction grating for diffracting a light beam emitted from the light source; a second grating plate having a second diffraction grating for further diffracting the light beam diffracted by the first diffraction grating; a reflector for reflecting the light beam from the second grating plate so as to allow the light beam to reenter the second grating plate; and a light-receiving portion for receiving the light beam reflected by the reflector and successively diffracted by the second and first grating plates, wherein a diffraction angle of plus and minus first-order diffracted light beams of the first diffraction grating is substantially equal to that of the plus and minus first-order diffracted light beams of the second diffraction grating, and the light-receiving portion generates an electric signal in accordance with the amount of the plus and minus first-order diffracted light beams of the first diffraction grating.
摘要翻译：光学编码器包括：光源; 第一光栅板，具有用于衍射从光源发射的光束的第一衍射光栅; 第二光栅板，具有用于进一步衍射由第一衍射光栅衍射的光束的第二衍射光栅; 用于反射来自第二光栅板的光束以使光束重新进入第二光栅板的反射器; 以及光接收部分，用于接收由反射器反射并被第二和第一光栅板连续衍射的光束，其中第一衍射光栅的正，负一级衍射光束的衍射角基本上等于第二衍射光栅的正，负一级衍射光束，并且光接收部分根据第一衍射光栅的正，负一级衍射光束的量产生电信号。

10. 发明授权

US5627678A Fourier transform optical apparatus and optical information 失效
标题翻译：傅里叶变换光学装置和光学信息
公开(公告)号：US5627678A
公开(公告)日：1997-05-06
申请号：US404900
申请日：1995-03-15
申请人： Kanji Nishii , Kenji Takamoto , Masami Ito , Atsushi Fukui
发明人： Kanji Nishii , Kenji Takamoto , Masami Ito , Atsushi Fukui
IPC分类号： G02B13/00 , G02B27/46 , G03H1/16
CPC分类号： G02B27/46
摘要： A Fourier transform optical apparatus for optically Fourier transforming an input image includes a spatial light modulator for displaying an input image, a light source for irradiating the input image on the spatial light modulator, a first convex lens and a first concave lens arranged near the spatial light modulator and a second convex lens arranged at the composite focal plane of the first convex lens and first concave lens. The respective focal lengths of these three lenses are determined to satisfy conditions such that a light ray passing an intersection of the spatial light modulator and an optical axis of the Fourier transform optical apparatus becomes a light ray parallel to the optical axis after passing the second convex lens and a light ray incident to the first convex lens in parallel to the optical axis is focused at the composite focal point of the first convex lens, first concave lens and the second convex lens.
摘要翻译：用于对输入图像进行光学傅里叶变换的傅里叶变换光学装置包括用于显示输入图像的空间光调制器，用于在空间光调制器上照射输入图像的光源，布置在空间光调制器附近的第一凸透镜和第一凹透镜光调制器和布置在第一凸透镜和第一凹透镜的复合焦平面处的第二凸透镜。这三个透镜的各个焦距被确定为满足通过空间光调制器和傅里叶变换光学装置的光轴的交点的光线在通过第二凸起之后成为平行于光轴的光线在第一凸透镜，第一凹透镜和第二凸透镜的复合焦点上聚焦透镜和入射到与光轴平行的第一凸透镜的光线。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式