公开(公告)号：US07221507B2

公开(公告)日：2007-05-22

申请号：US11325521

申请日：2006-01-05

申请人： Koji Hirata ,  Shigeru Inaoka

发明人： Koji Hirata ,  Shigeru Inaoka

IPC分类号： G03B21/56

CPC分类号： G03B21/625 ,  G03B17/50 ,  G03B21/60

摘要： A screen for use in a projection-type image display apparatus having an image displaying element which includes a plurality of pixels for modulating light from a light source so as to form an enlarged picture on the screen. The screen includes a Fresnel lens sheet having Fresnel lenses on a light emission side, a first sheet disposed on the light emission side of the Fresnel lens sheet, and a second sheet disposed on a light emission side of the first sheet and adhered thereto. The first sheet includes a plurality of lenticular lenses formed on a light incident side which extend in a longitudinal direction and are arranged in a horizontal direction, with light passing window portions being formed at positions opposing the lenticular lenses and with light absorbing portions provided therebetween. The second sheet includes a light scattering element therein.

摘要翻译： 一种用于具有图像显示元件的投影型图像显示装置的屏幕，该图像显示元件包括用于调制来自光源的光的多个像素，以便在屏幕上形成放大图像。 屏幕包括在发光侧具有菲涅尔透镜的菲涅尔透镜片，设置在菲涅耳透镜片的发光侧的第一片和设置在第一片的发光侧并附着于其上的第二片。 第一片包括形成在沿着纵向方向延伸并且沿水平方向布置的光入射侧的多个双凸透镜，其中透光窗部分形成在与双凸透镜相对的位置处，并且设置在其间的光吸收部分。 第二片在其中包括光散射元件。

公开(公告)号：US20060114559A1

公开(公告)日：2006-06-01

申请号：US11325521

申请日：2006-01-05

申请人： Koji Hirata ,  Shigeru Inaoka

发明人： Koji Hirata ,  Shigeru Inaoka

IPC分类号： G03B21/60

CPC分类号： G03B21/625 ,  G03B17/50 ,  G03B21/60

摘要： A screen for use in a projection-type image display apparatus having an image displaying element which includes a plurality of pixels for modulating light from a light source so as to form an enlarged picture on the screen. The screen includes a Fresnel lens sheet having Fresnel lenses on a light emission side, a first sheet disposed on the light emission side of the Fresnel lens sheet, and a second sheet disposed on a light emission side of the first sheet and adhered thereto. The first sheet includes a plurality of lenticular lenses formed on a light incident side which extend in a longitudinal direction and are arranged in a horizontal direction, with light passing window portions being formed at positions opposing the lenticular lenses and with light absorbing portions provided therebetween. The second sheet includes a light scattering element therein.

摘要翻译： 一种用于具有图像显示元件的投影型图像显示装置的屏幕，该图像显示元件包括用于调制来自光源的光的多个像素，以便在屏幕上形成放大图像。 屏幕包括在发光侧具有菲涅尔透镜的菲涅尔透镜片，设置在菲涅耳透镜片的发光侧的第一片和设置在第一片的发光侧并附着于其上的第二片。 第一片包括形成在沿着纵向方向延伸并且沿水平方向布置的光入射侧的多个双凸透镜，其中透光窗部分形成在与双凸透镜相对的位置处，并且设置在其间的光吸收部分。 第二片在其中包括光散射元件。

公开(公告)号：US20050001970A1

公开(公告)日：2005-01-06

申请号：US10898978

申请日：2004-07-27

申请人： Toru Numata ,  Yasuo Otsuka ,  Mikio Shiraishi ,  Koji Hirata ,  Naoyuki Ogura ,  Shigeru Inaoka ,  Kazunari Nakagawa ,  Shigeru Mori ,  Masahiko Yatsu

发明人： Toru Numata ,  Yasuo Otsuka ,  Mikio Shiraishi ,  Koji Hirata ,  Naoyuki Ogura ,  Shigeru Inaoka ,  Kazunari Nakagawa ,  Shigeru Mori ,  Masahiko Yatsu

IPC分类号： G02F1/1333 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1335 ,  G03B21/16 ,  H04N5/74 ,  H04N9/31

CPC分类号： H04N9/3141 ,  G02F1/133308 ,  G02F1/133385 ,  G02F1/133528 ,  H04N5/7441 ,  H04N9/3102

摘要： For obtaining both high brightness under condition of small-sized and simplified structure and suppression of increase in temperature of liquid crystal display elements and polarizing elements, in a liquid crystal display apparatus, comprising: a liquid crystal display element 2 for converting light from a light source into display picture depending on a driving signal; an optical projection system 1b containing a first optical element 1a and for projecting said light signal toward an object of projection; exit side polarizing elements 3b; a holding member 6 for holding them with the liquid crystal display element 2; and cooling medium 5; incident side polarizing elements 3a, wherein, a space is defined by either one of the incident side polarizing elements 3a and the liquid crystal display element 2, the first optical element 1a, between the liquid crystal display element 2 and the first optical element 1a, and the holding member 6, and said space is filled up with the cooling medium 5.

摘要翻译： 为了在液晶显示装置和液晶显示装置的液晶显示装置和液晶显示装置的温度升高的条件下获得高亮度，并且抑制液晶显示元件和偏振元件的温度升高，包括：液晶显示元件2，用于将来自光的光 根据驱动信号将其输入显示图像; 包含第一光学元件1a并用于将所述光信号投射到投影物体的光学投影系统1b; 出射侧偏振元件3b; 用于将其保持在液晶显示元件2上的保持构件6; 和冷却介质5; 入射侧偏振元件3a，其中，由液晶显示元件2和第一光学元件1a之间的入射侧偏振元件3a和液晶显示元件2中的任一个，第一光学元件1a， 和保持构件6，并且所述空间被冷却介质5填充。

公开(公告)号：US4948237A

公开(公告)日：1990-08-14

申请号：US188482

申请日：1988-04-29

申请人： Koji Hirata ,  Kyohei Fukuda ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Masayuki Muranaka ,  Isao Yoshizaki ,  Shigeru Inaoka ,  Hiroshi Jitsukata

发明人： Koji Hirata ,  Kyohei Fukuda ,  Hiroki Yoshikawa ,  Shigeru Mori ,  Masayuki Muranaka ,  Isao Yoshizaki ,  Shigeru Inaoka ,  Hiroshi Jitsukata

IPC分类号： G02B13/16 ,  G02B9/34 ,  G02B13/18

CPC分类号： G02B13/18

摘要： In a projection system wherein an optical system comprising a first lens for correcting a spherical aberration dependent on the aperture length, a second lens for enlargement and a third lens for correcting a field curvature, projects an image reproduced on a CRT having a curved phosphor surface, onto a screen, the third lens is spaced from the CRT so that the region of the phosphor surface which again totally reflects a light which has been totally reflected by a screen-side surface of the third lens is limited to the edge portion of an effective region of the phosphor surface.

摘要翻译： 在一种投影系统中，其中包括用于校正取决于孔径长度的球面像差的第一透镜的光学系统，用于放大的第二透镜和用于校正场曲率的第三透镜，投影在具有弯曲荧光粉表面的CRT上再现的图像 在屏幕上，第三透镜​​与CRT间隔开，使得再次完全反射已被第三透镜的屏幕侧表面完全反射的光的荧光体表面的区域被限制到第三透镜的边缘部分 荧光粉表面的有效区域。