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1. 发明申请

WO2008136315A1 OPTICAL PICKUP AND OPTICAL INFORMATION PROCESSING DEVICE 审中-公开
标题翻译：光学拾取和光学信息处理设备
公开(公告)号：WO2008136315A1
公开(公告)日：2008-11-13
申请号：PCT/JP2008/057783
申请日：2008-04-15
申请人： RICOH COMPANY, LTD. , HAMANO, Yukiko , HIRAI, Hideaki , NASUKAWA, Toshimichi , UMEKI, Kazuhiro
发明人： HAMANO, Yukiko , HIRAI, Hideaki , NASUKAWA, Toshimichi , UMEKI, Kazuhiro
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： A disclosed optical pickup includes an aberration correction unit with a phase shifter surface. On the phase shifter surface, rectangular or staircase- like steps are formed in a concentric manner around an optical axial center, in certain regions where a light beam passes through. The steps have different heights in the optical axial direction. A light beam having a wavelength of 405 nm is directly transmitted through the steps so that a phase difference is applied for correcting spherical aberration that occurs on a first optical recording medium. A light beam that passes through an annular region without any steps is focused on a second optical recording medium. A light beam that passes through an outside region is focused by an object lens on the second optical recording medium, and is not focused on the first optical recording medium.
摘要翻译：所公开的光拾取器包括具有移相器表面的像差校正单元。在移相器表面上，在光束通过的某些区域中，围绕光轴心同心地形成矩形或阶梯状台阶。台阶在光轴方向具有不同的高度。波长为405nm的光束直接透过该步骤，使得施加相位差来校正出现在第一光学记录介质上的球面像差。通过没有任何步骤的环形区域的光束被聚焦在第二光学记录介质上。通过外部区域的光束被物镜聚焦在第二光学记录介质上，并且不聚焦在第一光学记录介质上。

2. 发明申请

WO2010125901A1 OPTICAL ELEMENT, POLARIZATION FILTER, OPTICAL ISOLATOR, AND OPTICAL APPARATUS 审中-公开
标题翻译：光学元件，偏振滤光片，光学隔离器和光学设备
公开(公告)号：WO2010125901A1
公开(公告)日：2010-11-04
申请号：PCT/JP2010/056492
申请日：2010-04-06
申请人： RICOH COMPANY, LTD. , HIRAI, Hideaki , NASUKAWA, Toshimichi , UMEKI, Kazuhiro
发明人： HIRAI, Hideaki , NASUKAWA, Toshimichi , UMEKI, Kazuhiro
IPC分类号： G02B5/30 , G02B5/18 , G02B27/28
CPC分类号： G02B27/28 , G02B5/3025
摘要： An optical element transmits incident light having a particular polarization direction mainly by 0-order transmission and diffracts incident light having a perpendicular polarization direction. The optical element includes a periodic structure having a period equal to or greater than the wavelength of the incident light. The periodic structure includes first and second subwavelength concave-convex structures formed perpendicularly adjacent to each other in each period of the periodic structure. The first and the second subwavelength concave-convex structures have a period less than the wavelength of the incident light. A filling factor and a groove depth of the first and the second subwavelength concave-convex structures are determined such that they have the same effective refraction index with respect to the incident light having the particular polarization direction and a phase difference π with respect to the incident light having the particular polarization direction.
摘要翻译：光学元件主要通过0次透射来透射具有特定偏振方向的入射光，并衍射具有垂直偏振方向的入射光。光学元件包括具有等于或大于入射光的波长的周期的周期性结构。周期性结构包括在周期性结构的每个周期中彼此垂直相邻形成的第一和第二亚波长凹凸结构。第一和第二亚波长凹凸结构的周期小于入射光的波长。确定第一和第二亚波长凹凸结构的填充因子和凹槽深度，使得它们相对于具有特定偏振方向的入射光和相对于入射的相位差p具有相同的有效折射率具有特定偏振方向的光。

3. 发明申请

WO2008044781A1 IMAGE INPUT APPARATUS, IMAGE INPUT METHOD, PERSONAL AUTHENTICATION APPARATUS, AND ELECTRONIC APPARATUS 审中-公开
标题翻译：图像输入装置，图像输入方法，个人认证装置和电子装置
公开(公告)号：WO2008044781A1
公开(公告)日：2008-04-17
申请号：PCT/JP2007/070025
申请日：2007-10-05
申请人： RICOH COMPANY, LTD. , MORITA, Nobuhiro , YAMANAKA, Yuji , ISEKI, Toshiyuki , NASUKAWA, Toshimichi , KOSUGA, Shinichi , TAKAHASHI, Hiroaki , TAKAHASHI, Akira
发明人： MORITA, Nobuhiro , YAMANAKA, Yuji , ISEKI, Toshiyuki , NASUKAWA, Toshimichi , KOSUGA, Shinichi , TAKAHASHI, Hiroaki , TAKAHASHI, Akira
IPC分类号： G06T1/00 , A61B5/117 , H04N5/225 , H04N5/335
CPC分类号： A61B5/1172 , A61B5/0059 , G06K9/0004 , G06K2009/00932 , G06T1/0007 , H04N5/2254 , H04N5/2628
摘要： An image input apparatus that inputs an image of an object residing within a living body is disclosed. The image input apparatus includes a light source that irradiates near infrared light on the living body, a lens array arranged at a position facing the living body and including plural lenses each having a face with zero or negative power arranged at a side facing the living body and a face with positive power arranged at a side facing an image surface, an imaging unit arranged at the image surface side of the lens array that forms a compound-eye image corresponding to a collection of ommatidium images formed by the lenses of the lens array, and a reconstruction unit that reconstructs a single image from the compound-eye image using a parallax between the ommatidium images. The reconstructed single image is input as the image of the object.
摘要翻译：公开了输入住在生物体内的物体的图像的图像输入装置。图像输入装置包括：在生物体上照射近红外光的光源，配置在面向生物体的位置的透镜阵列，具有多个透镜，每个透镜具有配置在面向生物体的一侧的零度或负极的面以及布置在面对图像表面的一侧的具有正功率的面，成像单元，布置在透镜阵列的图像表面侧，其形成对应于由透镜阵列的透镜形成的小视野图像的集合的复眼图像以及重建单元，其使用小眼图像之间的视差从复眼图像重建单个图像。将重建的单个图像作为对象的图像输入。

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