公开(公告)号：US5481334A

公开(公告)日：1996-01-02

申请号：US139174

申请日：1993-10-21

申请人： Shinobu Arimoto ,  Katsuichi Shimizu ,  Yutaka Komiya ,  Kazuo Yoshinaga ,  Toshio Hayashi ,  Takehiko Nakai ,  Tsutomu Utagawa ,  Tetsuya Nagase ,  Nobuatsu Sasanuma

发明人： Shinobu Arimoto ,  Katsuichi Shimizu ,  Yutaka Komiya ,  Kazuo Yoshinaga ,  Toshio Hayashi ,  Takehiko Nakai ,  Tsutomu Utagawa ,  Tetsuya Nagase ,  Nobuatsu Sasanuma

IPC分类号： G03G21/04 ,  H04N1/00 ,  H04N1/32

CPC分类号： H04N1/00846 ,  G03G21/046 ,  H04N1/00864 ,  H04N1/32144 ,  H04N2201/3226 ,  H04N2201/3243 ,  H04N2201/327 ,  H04N2201/3271

摘要： A specified original that is not supposed to be copied is marked with a pattern that is formed by infrared reflected light. A copying apparatus includes a detecting unit for detecting the pattern and determines that an original is the specified original in accordance with the detection by the detecting unit. A copying operation is controlled in accordance with the determination of whether the original is the specified original that is not supposed to be copied.

摘要翻译： 不应该被复制的指定原件用由红外反射光形成的图案标记。 复印装置包括：检测单元，用于检测图案，并根据检测单元的检测确定原稿是指定的原稿。 根据原件是否是不应该被复制的指定原件的确定来控制复印操作。

公开(公告)号：US5113067A

公开(公告)日：1992-05-12

申请号：US479606

申请日：1990-02-13

申请人： Takehiko Nakai ,  Michitaka Setani

发明人： Takehiko Nakai ,  Michitaka Setani

IPC分类号： H04N1/48

CPC分类号： H04N1/488

摘要： An image reading apparatus comprises a multiline sensor on which a plurality of linear sensor arrays are arranged on and a single substrate, a focusing optical system for focusing an object image on the multiline sensor. A blazed diffraction grating is disposed in an optical path between the focusing optical system and the multiline sensor, for color-separating light from the object into a plurality of light components, and for guiding the color-separated light components to the corresponding sensor arrays. The grating thickness of the blazed diffraction grating varies in correspondence with an angle of light incident on the blazed diffraction grating.

公开(公告)号：US08009355B2

公开(公告)日：2011-08-30

申请号：US11950827

申请日：2007-12-05

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B5/30

CPC分类号： G02B1/118 ,  G02B5/1809 ,  G02B5/3083 ,  G02F2201/38

摘要： An optical element includes a first periodic structure portion being formed on a base portion and having a one-dimensional periodic structure in which a first medium and a second medium with a smaller refractive index than that of the first medium are alternately disposed in a first direction, and a second periodic structure portion being formed on the first periodic structure portion and having a periodic structure in which a third medium and a fourth medium with a smaller refractive index than that of the third medium are alternately disposed in the first direction. At an interface between the first and second periodic structure portions, a ratio of the first medium in the first periodic structure portion and a ratio of the third medium in the second periodic structure portion are different from each other. The element has a good form birefringence effect and a high reflection-suppressing effect.

摘要翻译： 光学元件包括第一周期结构部分，其形成在基部上并且具有一维周期性结构，其中具有比第一介质的折射率小的折射率的第一介质和第二介质在第一方向上交替地设置 并且第二周期性结构部分形成在第一周期性结构部分上并且具有周期性结构，其中折射率小于第三介质的第三介质和第四介质在第一方向上交替设置。 在第一和第二周期性结构部分之间的界面处，第一周期性结构部分中的第一介质与第二周期性结构部分中的第三介质的比例彼此不同。 该元件具有良好的形状双折射效应和高反射抑制效果。

公开(公告)号：US07612941B2

公开(公告)日：2009-11-03

申请号：US11849971

申请日：2007-09-04

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B5/18

CPC分类号： G02B5/1895 ,  G02B5/1814 ,  G02B5/1866 ,  G02B27/0037 ,  G02B27/42 ,  G02B27/4211 ,  G02B27/4277

摘要： A diffractive optical element includes a plurality of diffraction gratings. A diffraction grating within the plurality of diffraction gratings includes a plurality of grating parts having a curved grating surface and grating tips which connect to define a curved envelope face. The grating surface has a radius of curvature larger than a radius of curvature of the envelope face. In addition, two diffraction gratings within the plurality of diffraction gratings are composed of different materials having different dispersions. Therefore, even when the radius of curvature of the envelope face is small, the degradation of the diffraction efficiency is suppressed.

公开(公告)号：US07554735B2

公开(公告)日：2009-06-30

申请号：US11874046

申请日：2007-10-17

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B5/18

CPC分类号： G02B5/1895 ,  G02B5/1814 ,  G02B5/1866 ,  G02B27/0037 ,  G02B27/42 ,  G02B27/4211 ,  G02B27/4277

摘要： A diffractive optical element includes a plurality of diffraction gratings. A diffraction grating within the plurality of diffraction gratings includes a plurality of grating parts having a curved grating surface and grating tips which connect to define a curved envelope face. The grating surface has a radius of curvature larger than a radius of curvature of the envelope face. In addition, two diffraction gratings within the plurality of diffraction gratings are composed of different materials having different dispersions. Therefore, even when the radius of curvature of the envelope face is small, the degradation of the diffraction efficiency is suppressed.

摘要翻译： 衍射光学元件包括多个衍射光栅。 多个衍射光栅内的衍射光栅包括具有弯曲光栅表面的多个光栅部分和连接以限定弯曲包络面的光栅尖端。 光栅表面的曲率半径大于信封面的曲率半径。 此外，多个衍射光栅内的两个衍射光栅由具有不同分散度的不同材料组成。 因此，即使包络面的曲率半径小，也能够抑制衍射效率的劣化。

公开(公告)号：US20070297057A1

公开(公告)日：2007-12-27

申请号：US11849971

申请日：2007-09-04

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B5/18

CPC分类号： G02B5/1895 ,  G02B5/1814 ,  G02B5/1866 ,  G02B27/0037 ,  G02B27/42 ,  G02B27/4211 ,  G02B27/4277

摘要： A diffractive optical element includes a plurality of diffraction gratings. A diffraction grating within the plurality of diffraction gratings includes a plurality of grating parts having a curved grating surface and grating tips which connect to define a curved envelope face. The grating surface has a radius of curvature larger than a radius of curvature of the envelope face. In addition, two diffraction gratings within the plurality of diffraction gratings are composed of different materials having different dispersions. Therefore, even when the radius of curvature of the envelope face is small, the degradation of the diffraction efficiency is suppressed.

摘要翻译： 衍射光学元件包括多个衍射光栅。 多个衍射光栅内的衍射光栅包括具有弯曲光栅表面的多个光栅部分和连接以限定弯曲包络面的光栅尖端。 光栅表面的曲率半径大于信封面的曲率半径。 此外，多个衍射光栅内的两个衍射光栅由具有不同分散度的不同材料组成。 因此，即使包络面的曲率半径小，也能够抑制衍射效率的劣化。

公开(公告)号：US06829093B1

公开(公告)日：2004-12-07

申请号：US09626738

申请日：2000-07-26

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B518

CPC分类号： G02B27/0037 ,  G02B5/1876 ,  G02B5/1895 ,  G02B27/4211 ,  G02B27/4216 ,  G02B27/4277

摘要： A diffraction optical element wherein a plurality of diffraction gratings formed of at least two kinds of materials differing in dispersion are laminated, at least two of the plurality of diffraction gratings are formed on a curved surface and adjacent to each other, and these two adjacent diffraction gratings are equal to each other in the shape of a curved tip plane in which the tips of respective grating portions are ranged.

摘要翻译： 衍射光学元件，其中由至少两种不同色散的材料形成的多个衍射光栅层压，多个衍射光栅中的至少两个形成在弯曲表面上并且彼此相邻，并且这两个相邻的衍射 光栅彼此相等，其形式为弯曲的尖端平面，其中各个光栅部分的尖端在其中。

公开(公告)号：US06650477B2

公开(公告)日：2003-11-18

申请号：US09871629

申请日：2001-06-04

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B518

CPC分类号： G02B5/1866

摘要： A diffractive optical element includes a diffraction optical part provided with a phase-type diffraction grating. The diffraction grating of the diffraction optical part has on the surface thereof minute uneven structure of which the period is substantially constant. The period is smaller than a wavelength used.

摘要翻译： 衍射光学元件包括具有相型衍射光栅的衍射光学部件。 衍射光学部件的衍射光栅在其表面上具有微小的不均匀结构，其周期基本上恒定。 该周期小于使用的波长。

公开(公告)号：US06480332B1

公开(公告)日：2002-11-12

申请号：US09121685

申请日：1998-07-24

申请人： Takehiko Nakai

发明人： Takehiko Nakai

IPC分类号： G02B518

CPC分类号： G02B27/4211 ,  G02B7/008 ,  G02B7/028 ,  G02B27/0037 ,  G02B27/4216 ,  G02B27/4272

摘要： In a diffractive optical element having a diffraction grating formed at an interface between different substances, a total sum of values obtained by multiplying rates of change in refractive index due to temperature variations of the substances by a grating thickness of the diffraction grating is smaller than a useful wavelength.

摘要翻译： 在具有形成在不同物质之间的界面处的衍射光栅的衍射光学元件中，通过将由于物质的温度变化引起的折射率的变化率乘以衍射光栅的光栅厚度而获得的值的总和小于 有用的波长。

公开(公告)号：US6078682A

公开(公告)日：2000-06-20

申请号：US662276

申请日：1996-06-12

申请人： Hiroshi Tanioka ,  Shinobu Arimoto ,  Yoshinobu Sato ,  Kazuo Yoshinaga ,  Toshio Hayashi ,  Takehiko Nakai ,  Tsutomu Utagawa ,  Tetsuya Nagase ,  Junko Kuramochi ,  Nobuatsu Sasanuma ,  Yoshiki Uchida

发明人： Hiroshi Tanioka ,  Shinobu Arimoto ,  Yoshinobu Sato ,  Kazuo Yoshinaga ,  Toshio Hayashi ,  Takehiko Nakai ,  Tsutomu Utagawa ,  Tetsuya Nagase ,  Junko Kuramochi ,  Nobuatsu Sasanuma ,  Yoshiki Uchida

IPC分类号： G07D7/12 ,  G07D7/20 ,  H04N1/00 ,  G06K9/00

CPC分类号： H04N1/00846 ,  G07D7/12 ,  G07D7/20 ,  H04N1/00864 ,  H04N1/00875

摘要： An object of the present invention is to provide an image processing apparatus and an image processing method both offering a high-precision and general-purpose capability of identifying an image and performing appropriate processing depending on whether identification is effected. In the image processing apparatus and image processing method, image data is detected in visible and invisible light reflected from each of a target pixel and surrounding pixels. Based on the image data detected in visible and invisible light, a specific pattern is identified. The specific pattern appears substantially the same in color as a surrounding area under visible light but different in characteristic therefrom under invisible light, which is identified using the image data of the target pixel and surrounding pixels provided by a detector. The image processing apparatus is controlled depending on whether the identification is effected.

摘要翻译： 本发明的目的是提供一种图像处理装置和图像处理方法，其提供识别图像的高精度和通用能力，并且根据是否进行识别来执行适当的处​​理。 在图像处理装置和图像处理方法中，以从目标像素和周围像素中的每一个反射的可见光和不可见光来检测图像数据。 基于在可见光和不可见光中检测到的图像数据，识别出特定的图案。 特定图案在可见光下的周围区域的颜色基本相同，但是在不可见光下的特征不同，其使用由检测器提供的目标像素和周围像素的图像数据来识别。 该图像处理装置根据该识别是否受到控制。