公开(公告)号：US06987606B2

公开(公告)日：2006-01-17

申请号：US11104559

申请日：2005-04-13

申请人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

发明人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

IPC分类号： G02B26/00 ,  G02F1/29

CPC分类号： G09G3/34 ,  G02B26/105 ,  G09G3/002 ,  G09G2310/0235 ,  G09G2320/0233

摘要： An image production apparatus, an image display apparatus and an image display method are disclosed which can reduce the ununiformity in luminance and color which appears on a display screen and can be formed compact. Also optical modulation device adjustment apparatus is disclosed which can detect and correct the ununiformity in modulation characteristic of a modulation device. The image display apparatus includes a light detection apparatus in addition to a light source section, an illumination optical system, an optical modulation section, a spatial filter, a light projection section and a screen. The light detection apparatus detects the dispersion of a modulation characteristic of each pixel element of GLV devices and the ununiformity in luminance and color displayed in accordance with an illumination condition. An optimum driving voltage for minimizing the ununiformity in color and luminance to be displayed is determined based on a signal detected by the light detection apparatus.

摘要翻译： 公开了一种图像制作装置，图像显示装置和图像显示方法，可以减少出现在显示屏上并且可以紧凑地形成的亮度和颜色的不均匀性。 还公开了可以检测和校正调制装置的调制特性不均匀的光调制装置调整装置。 图像显示装置除了光源部，照明光学系统，光调制部，空间滤光片，光投影部和屏幕之外还包括光检测装置。 光检测装置根据照明条件检测GLV装置的每个像素元件的调制特性的偏差和显示的亮度和颜色的不均匀性。 基于由光检测装置检测到的信号，确定用于最小化要显示的颜色和亮度的不均匀性的最佳驱动电压。

公开(公告)号：US20050179769A1

公开(公告)日：2005-08-18

申请号：US11104504

申请日：2005-04-13

申请人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

发明人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

IPC分类号： G02B26/08 ,  G02B17/08 ,  G02B26/10 ,  G02B27/18 ,  G09G3/00 ,  G09G3/02 ,  G09G3/34 ,  H04N9/31 ,  B41J2/47

CPC分类号： G09G3/34 ,  G02B26/105 ,  G09G3/002 ,  G09G2310/0235 ,  G09G2320/0233

摘要： An image production apparatus, an image display apparatus and an image display method are disclosed which can reduce the ununiformity in luminance and color which appears on a display screen and can be formed compact. Also optical modulation device adjustment apparatus is disclosed which can detect and correct the ununiformity in modulation characteristic of a modulation device. The image display apparatus includes a light detection apparatus in addition to a light source section, an illumination optical system, an optical modulation section, a spatial filter, a light projection section and a screen. The light detection apparatus detects the dispersion of a modulation characteristic of each pixel element of GLV devices and the ununiformity in luminance and color displayed in accordance with an illumination condition. An optimum driving voltage for minimizing the ununiformity in color and luminance to be displayed is determined based on a signal detected by the light detection apparatus.

公开(公告)号：US20050174343A1

公开(公告)日：2005-08-11

申请号：US11104628

申请日：2005-04-13

申请人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

发明人： Koichi Maeyama ,  Yoshiyuki Akiyama ,  Hitoshi Tamada ,  Hiroki Kikuchi

IPC分类号： G02B26/08 ,  G02B17/08 ,  G02B26/10 ,  G02B27/18 ,  G09G3/00 ,  G09G3/02 ,  G09G3/34 ,  H04N9/31 ,  G09G5/00

CPC分类号： G09G3/34 ,  G02B26/105 ,  G09G3/002 ,  G09G2310/0235 ,  G09G2320/0233

摘要： An image production apparatus, an image display apparatus and an image display method are disclosed which can reduce the ununiformity in luminance and color which appears on a display screen and can be formed compact. Also optical modulation device adjustment apparatus is disclosed which can detect and correct the ununiformity in modulation characteristic of a modulation device. The image display apparatus includes a light detection apparatus in addition to a light source section, an illumination optical system, an optical modulation section, a spatial filter, a light projection section and a screen. The light detection apparatus detects the dispersion of a modulation characteristic of each pixel element of GLV devices and the ununiformity in luminance and color displayed in accordance with an illumination condition. An optimum driving voltage for minimizing the ununiformity in color and luminance to be displayed is determined based on a signal detected by the light detection apparatus.

公开(公告)号：US06559937B2

公开(公告)日：2003-05-06

申请号：US09727143

申请日：2000-11-30

申请人： Hitoshi Tamada ,  Yutaka Imai ,  Ayumu Taguchi ,  Hiroyuki Wada

发明人： Hitoshi Tamada ,  Yutaka Imai ,  Ayumu Taguchi ,  Hiroyuki Wada

IPC分类号： G01N2100

CPC分类号： G01N21/956 ,  G01N21/9501

摘要： An image of an inspection target having a concave and convex pattern is picked up in an off-focus state by an image pickup element 4. Further, the image of the inspection target picked up in the off-focus state is taken in by an image processing computer 6. Based on the image, the image processing computer 6 prepares a light intensity profile having a peak corresponding to a boundary portion between a concave portion and a convex portion of the concave and convex pattern of the inspection target. For example, a change of the width of the concave or convex portion of the concave and convex portion can be detected very accurately, by measuring the width of the concave or convex portion of the concave and convex portion on the basis of the intensity profile.

摘要翻译： 通过图像拾取元件4在离焦状态下拾取具有凹凸图案的检查对象的图像。此外，以离焦状态拍摄的检查对象的图像被摄像 基于图像，图像处理计算机6准备具有对应于检查对象的凹凸图案的凹部和凸部之间的边界部分的峰值的光强度分布。 例如，通过基于强度分布测量凹凸部的凹部或凸部的宽度，可以非常精确地检测凹凸部的凹部或凸部的宽度的变化。

公开(公告)号：US4898440A

公开(公告)日：1990-02-06

申请号：US244164

申请日：1988-09-14

申请人： Hitoshi Tamada ,  Masahiko Kaneko ,  Tsutomu Okamoto

发明人： Hitoshi Tamada ,  Masahiko Kaneko ,  Tsutomu Okamoto

IPC分类号： G02B6/34 ,  G02B6/12 ,  G02F1/095 ,  H01F10/24

CPC分类号： H01F10/245 ,  G02F1/095

摘要： An optical waveguide device is disclosed which utilizes an interaction between a guided optical wave and a magnetostatic wave. The optical waveguide device comprises a layer of bismuth substituted magnetic garnet which guides an optical wave. A pair of electrodes coupled to the layer of the magnetic garnet generates a magnetostatic backward volume wave in the layer of the magnetic garnet under an application of a certain bias magnetic field. The guided optical wave and the magnetostatic wave interact with each other wherein adverse effect caused by a spin effect is avoided to realize high efficiency at high frequency.

摘要翻译： 公开了一种使用引导光波和静磁波之间的相互作用的光波导器件。 光波导器件包括引导光波的铋取代的石榴石层。 耦合到磁石榴石层的一对电极在施加一定偏置磁场的情况下在磁性石榴石层中产生静磁反向体积波。 引导光波和静磁波彼此相互作用，避免了由自旋效应引起的不利影响，从而在高频下实现高效率。

公开(公告)号：US4746884A

公开(公告)日：1988-05-24

申请号：US883603

申请日：1986-07-09

申请人： Yoshikazu Murakami ,  Hideo Tanaka ,  Masami Miyake ,  Seigo Ito ,  Hitoshi Tamada ,  Toshiro Yamada

发明人： Yoshikazu Murakami ,  Hideo Tanaka ,  Masami Miyake ,  Seigo Ito ,  Hitoshi Tamada ,  Toshiro Yamada

IPC分类号： H01F10/24 ,  H01P1/218 ,  H01P7/00 ,  H01P7/08

CPC分类号： H01P1/218 ,  H01F10/245

摘要： Disclosed is a YIG thin film device utilizing ferrimagnetic resonance effect, a magnetic circuit having a gap of length lg where the YIG thin film device being provided and applying a bias magnetic field perpendicular to a film surface of the YIG thin film device, the magnetic circuit including a permanent magnet having a thickness lm and a soft magnetic plate having a thickness lx, the permanent magnet satisfying the characteristics ##EQU1## the soft magnetic plate satisfying the characteristics ##EQU2## wherein fo is resonance frequency of the YIG thin film device,.gamma. is gyromagnetic ratio of the YIG thin filmNz.sup.Y is demagnetization factor of the YIG thin film4.pi.Mso.sup.Y is saturation magnetization of the YIG thin film at room temperature,4.pi.Mso.sup.x is saturation magnetization of the soft magnetic plate,Br.sup.o is remanence of the permanent magnet at room temperature,.alpha..sub.1.sup.B is first order temperature coefficient of the remanence of the permanent magnet near room temperature,.alpha..sub.1.sup.Y is first order temperature coefficient of the saturation magnetization of the YIG thin film near room temperature,.alpha..sub.1.sup.x is first order temperature coefficient of the saturation magnetization of the soft magnetic plate near room temperatureand, the thickness lm and lx being selected to improve temperature dependency of the resonance frequency.

摘要翻译： 公开了利用亚铁磁共振效应的YIG薄膜器件，具有长度为lg的间隙的磁路，其中设置了YIG薄膜器件，并施加垂直于YIG薄膜器件的膜表面的偏置磁场，磁路 包括具有厚度lm的永磁体和厚度为lx的软磁性板，所述永磁体满足特性Bro>（fo / gamma）+ NzY4 pi MsoY＆lt; IMAGE＆gt;软磁性板满足特性4 pi MsoX fo / gamma）+ NzY4 pi MsoY 其中fo是YIG薄膜器件的谐振频率，γ是YIG薄膜的回磁比NzY是YIG薄膜4的去磁因子pi MsoY是YIG的饱和磁化 薄膜在室温下，4 pi Msox是软磁板的饱和磁化，Bro是永磁体在室温下的剩磁，α1B是一级温度系数 永久磁铁在室温附近的剩余磁通量α1Y是在室温附近的YIG薄膜的饱和磁化强度的一阶温度系数，α1x是软磁板在室内的饱和磁化强度的一阶温度系数 温度，并且选择厚度lm和lx以改善谐振频率的温度依赖性。