公开(公告)号：EP2815228A4

公开(公告)日：2015-10-07

申请号：EP13749832

申请日：2013-02-12

申请人： RICOH CO LTD

发明人： ITOH IZUMI ,  HIRAI HIDEAKI ,  KOBAYASHI MASANORI

IPC分类号： G01N21/17 ,  B60S1/08

CPC分类号： G02B5/0816 ,  B60R11/04 ,  B60R2011/0026 ,  B60S1/0844 ,  G01N21/21 ,  G01N2021/435 ,  H04N7/18

公开(公告)号：EP2536997A4

公开(公告)日：2018-01-17

申请号：EP11742149

申请日：2011-01-26

申请人： RICOH CO LTD

发明人： HIRAI HIDEAKI ,  AOKI SHIN ,  KOBAYASHI MASANORI ,  LI XUE

IPC分类号： G01B11/00 ,  G01B11/26 ,  G01N21/21 ,  G01N21/90 ,  G01N21/958 ,  G01V8/10 ,  G06T1/00

CPC分类号： G01N21/84 ,  B25J9/1697 ,  G01N21/21 ,  G01N21/23 ,  G01N21/9018 ,  G01N21/9027 ,  G01N21/958

摘要： A disclosed transparent body detection system includes an image acquisition unit acquiring a vertical polarization image and a horizontal polarization image by acquiring an image of a first region, the image including a transparent body having characteristics in which a polarization direction of transmission light changes; a placing table on which the transparent body is to be placed; a polarization filter disposed opposite to the image acquisition unit across the placing table and at a position including a second region, an image of the second region including at least the transparent body in the first region and being acquired; and an image processing apparatus detecting the transparent body based on distribution of vertical/lateral polarization degree of a vertical/lateral polarization degree image based on the vertical polarization image and the horizontal polarization image.

公开(公告)号：EP1756660A4

公开(公告)日：2011-01-19

申请号：EP05741376

申请日：2005-05-11

申请人： RICOH CO LTD

发明人： FUJITA KAZUHIRO ,  OSAKA TAKANOBU ,  MIYAGAKI KAZUYA ,  TAKAURA ATSUSHI ,  KOBAYASHI MASANORI ,  SUGIMOTO HIROYUKI ,  NAMIE KENJI ,  MATSUKI YUMI ,  TOKITA TOSHIAKI

IPC分类号： G02B26/08 ,  G03B21/20 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/29 ,  G03B21/00 ,  G03B21/28 ,  G09G3/00 ,  G09G3/20 ,  H04N5/74 ,  H04N9/31

CPC分类号： H04N5/7416 ,  G02F1/13 ,  G02F1/29 ,  G03B21/005 ,  G03B21/28 ,  G09G3/001 ,  G09G3/007 ,  H04N9/3141

摘要： An image display apparatus acquires a high-quality image by suppressing positional fluctuation of projected dots due to a positional offset of an optical path deflecting element. A spatial light modulation element (1) displays an image by projecting a light from an illumination light source. A projection optical system (3) enlarges and projects the image formed on the spatial light modulation element (1). An optical path deflecting element (2) is provided between the spatial light modulation element (1) and the image formed on a screen (4) so as to deflect an optical path in accordance with a screen frame period. The optical path deflecting element (2) shifts the optical path for the image projected on the screen (4) at a high rate so as to apparently increase a number of picture elements. The optical path deflecting element (2) is located within the projection optical system.

摘要翻译： 图像显示装置通过抑制由于光路偏转元件的位置偏移引起的投影点的位置变动来获取高质量图像。 空间光调制元件（1）通过投射来自照明光源的光来显示图像。 投影光学系统（3）放大并投影形成在空间光调制元件（1）上的图像。 光路偏转元件（2）设置在空间光调制元件（1）和形成在屏幕（4）上的图像之间，以便根据屏幕帧周期偏转光路。 光路偏转元件（2）以高速率移动投影在屏幕（4）上的图像的光路，从而显着增加像素的数量。 光路偏转元件（2）位于投影光学系统内。

公开(公告)号：EP2517175A4

公开(公告)日：2018-01-10

申请号：EP10839429

申请日：2010-12-15

申请人： RICOH CO LTD

发明人： HIRAI HIDEAKI ,  AOKI SHIN ,  KOBAYASHI MASANORI ,  LI XUE ,  KASAHARA RYOSUKE

IPC分类号： G06T7/00 ,  B60R1/00 ,  G01V8/10 ,  G06T1/00

CPC分类号： G06K9/00798 ,  B60R2300/307 ,  B60R2300/8093 ,  G06K9/00805 ,  G06K9/2036 ,  G06T7/11 ,  G06T7/12 ,  G06T7/136 ,  G06T7/73 ,  G06T2207/10016 ,  G06T2207/10152 ,  G06T2207/20224 ,  G06T2207/30252 ,  G06T2207/30256 ,  G06T2207/30261

摘要： An object identifying apparatus is disclosed, including: an imaging part, and an object identification processing part. The imaging part receives two polarized lights having a different polarization direction included in light reflected from the object existing in the image pickup area and captures two polarization images. The object identification processing part conducts an identification process for identifying the object existing at a place corresponding to each of multiple process areas in the image pickup area by using the two polarization images captured by the imaging part.