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1. 发明专利

JP2003329995A Liquid crystal display device 审中-公开
标题翻译：液晶显示装置
公开(公告)号：JP2003329995A
公开(公告)日：2003-11-19
申请号：JP2003062645
申请日：2003-03-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： INAGE HISAO , KONUMA YOSHIHIRO , MATSUDA YUTAKA , DEGUCHI MASAHARU
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/13357 , G03B21/00 , G03B21/16
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal projector which takes the higher efficiency of heat radiation, lower cost, smaller size and remedy against dust of a liquid crystal display element into consideration.
SOLUTION: Sheets of transparent glass having a thickness to hardly permit focusing of dust on a screen are respectively fixed and arranged on the incident surface side and exit surface side of an image display element. The liquid crystal projector which reduces the deterioration of image quality by the dust is made possible and the promotion of the heat radiating effect of the image display element is made possible by using the image display element of such configuration.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种液晶投影仪，其考虑到更高的散热效率，更低的成本，更小的尺寸和对液晶显示元件的灰尘的补救。解决方案：具有难以将灰尘聚焦在屏幕上的厚度的透明玻璃板分别固定并布置在图像显示元件的入射表面侧和出射面侧。通过使用这种结构的图像显示元件，能够降低灰尘对图像质量劣化的液晶投影机成为可能，从而可以促进图像显示元件的散热效果。版权所有（C）2004，JPO

2. 发明专利

JP2005018007A Projector apparatus 有权
标题翻译：投影仪
公开(公告)号：JP2005018007A
公开(公告)日：2005-01-20
申请号：JP2003273894
申请日：2003-07-14
申请人： Cosina Co Ltd , Hitachi Ltd , 株式会社コシナ , 株式会社日立製作所
发明人： TSUBATA FUSAMITSU , YAMAZAKI FUTOSHI , DEGUCHI MASAHARU , SHIRAISHI MIKIO , KUROIWA TOSHIO , OGINO KAZUHIRO
IPC分类号： G03B21/14 , G03B5/06 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To easily apply an optical system correction system to a projector for home use by realizing miniaturization and cost reduction and securing an excellent operation feeling.
SOLUTION: A trapezoid correcting device for projector which corrects trapezoidal distortion of an image projected on a screen by displacing a projection lens laterally and/or longitudinally is equipped with a support mechanism part which has a mechanism for guiding a support part of the projection part laterally and/or longitudinally, an operation part which is manually operated, and a transmitting mechanism part which transmits the manipulated variable of the operation part to the support mechanism part through a gear mechanism including at least a rack and pinion to displace the lens support part laterally and/or longitudinally.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过实现小型化和成本降低并确保优良的操作感觉，容易地将光学系统校正系统应用于家用投影机。解决方案：用于通过横向和/或纵向移动投影透镜来校正投影在屏幕上的图像的梯形变形的梯形校正装置配备有支撑机构部件，该支撑机构部件具有用于引导支撑部分的机构突出部分横向和/或纵向地，手动操作的操作部分和传递机构部分，其通过包括至少齿条和小齿轮的齿轮机构将操作部分的操作变量传递到支撑机构部分，以使透镜支撑部分横向和/或纵向。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004279996A Reflector, and projection type display apparatus using the same 审中-公开
公开(公告)号：JP2004279996A
公开(公告)日：2004-10-07
申请号：JP2003074812
申请日：2003-03-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANITSU MASAHIKO , MIYATA MOTOYUKI , HODEN KAZUO , DEGUCHI MASAHARU , MAEDA AKINORI
IPC分类号： G02B5/10 , C03C3/095 , G02B1/00 , G02B5/08 , G02B27/14 , G02F1/13 , G02F1/13357 , G03B21/14
CPC分类号： C03C3/095 , G03B21/2066
摘要： PROBLEM TO BE SOLVED: To provide a reflector which uses a glass material with superior heat resistance and a projection type display device using the same. SOLUTION: A projector device comprises a light source which emits white light, a reflector which reflects the luminous flux emitted by the light source, a light valve which modulates the illuminating luminous flux, and a projection lens which projects a picture on the light valve. The reflector is made of glass containing at least one kind of rare earth element in the group of Sc, Y, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2005062592A Reflector, projection type display and floodlight device 有权
标题翻译：反射器，投影型显示器和荧光灯装置
公开(公告)号：JP2005062592A
公开(公告)日：2005-03-10
申请号：JP2003294228
申请日：2003-08-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYATA MOTOYUKI , TANITSU MASAHIKO , AKATA HIROYUKI , DEGUCHI MASAHARU , WATANABE KATSUYUKI , NAITO TAKASHI , HIRATA KOJI
IPC分类号： G03B21/14 , F21S2/00 , F21V7/00 , F21V7/22 , F21Y101/00 , H04N5/74
CPC分类号： C03C3/095 , F21S41/37 , F21V7/22 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a reflector using a glass material having excellent heat resistance and to provide a projection type display using the reflector.
SOLUTION: A projector device includes a light source which emits white light; a reflector which reflects an outgoing luminous flux from the light source; a light valve which modulates illuminating luminous flux; and a projection lens which projects images on the light valve. In the projector device, the reflector is made of glass comprising, as its main constituent, SIO
2 containing at least one rare earth element selected from a group consisting of Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. The coefficient of the thermal expansion of the glass is smaller than 40×10
-7 /°C and its transition temperature is higher than 500°C.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供使用具有优异耐热性的玻璃材料的反射器，并使用反射器提供投射型显示。解决方案：投影仪装置包括发出白光的光源; 反射来自光源的出射光束的反射器; 调节照明光通量的光阀; 以及在光阀上投影图像的投影透镜。在投影仪装置中，反射体由玻璃构成，其中包含至少一种选自Sc，Y，La，Pr，Nd的稀土元素作为其主要成分的SIO 2 Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu。玻璃的热膨胀系数小于40×10 -7 /℃，其转变温度高于500℃。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2002082310A DISPLAY DEVICE AND OPTICAL UNIT 审中-公开
公开(公告)号：JP2002082310A
公开(公告)日：2002-03-22
申请号：JP2001192344
申请日：2001-06-26
申请人： HITACHI LTD
发明人： TSUNODA TAKASHI , ARIKI YOSHIO , DEGUCHI MASAHARU , MARUYAMA TAKESUKE
IPC分类号： G02F1/1335 , G02B27/28 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a display device, capable of provided with a bright enlarged image by enlarging the effective numerical aperture of a display element. SOLUTION: A polarized beam splitter 14 for separating an indefinite polarized beam radiated from a light source into a linearly polarized P-polarized beam and an S-polarized beam and two rectangular prisms for converting either of the separated polarized beams into the other polarized beam area arranged between a display element 5 and a focusing lens group 3, and respective polarized beams radiated from the splitter 14 and two faces of the prisms 15 are made incident on respectively different pixels of the display element 5.

6. 发明专利

JP2000347153A PROJECTION TYPE VIDEO DISPLAY DEVICE 失效
公开(公告)号：JP2000347153A
公开(公告)日：2000-12-15
申请号：JP16055099
申请日：1999-06-08
申请人： HITACHI LTD
发明人： YAMAZAKI FUTOSHI , MORI SHIGERU , DEGUCHI MASAHARU , MATSUDA YUTAKA , SHIAKI TAKUYA , NAKAJIMA TSUTOMU
IPC分类号： G02B19/00 , G02F1/13 , G02F1/1335 , G03B21/00 , G03B33/12
摘要： PROBLEM TO BE SOLVED: To efficiently obtain a display device where brightness and picture quality are secured by adjusting positional relation between lens arrays in the case of forming the picture of a 1st lens array near a video display element by a 2nd lens array. SOLUTION: A distance between the 1st lens array 6 and the 2nd lens array 7 is made adjustable so as to adjust the size of a projected picture on the surface of the video display element 2 of each cell of the 1st lens array 6 by the 2nd lens array 7 and a condensing lens 9. In this device, light radiated from an electric lamp being a light source 1 is condensed by an ellipsoidal or parabolic or aspherical reflector 5 and made incident on the 1st lens array 6. After passing through the 1st lens array 6, the light passes through the 2nd lens array 7 and is made incident on a polarizing beam splitter 8. Furthermore, after passing through the splitter 8, the light is condensed by the lens 9 and irradiates the element 2.

7. 发明专利

JPH11258566A LIGHT SOURCE DEVICE FOR LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH11258566A
公开(公告)日：1999-09-24
申请号：JP5830198
申请日：1998-03-10
申请人： HITACHI LTD
发明人： KONUMA YOSHIHIRO , HASEBE TATSUMI , DEGUCHI MASAHARU , TSUNODA TAKASHI , MATSUDA YUTAKA , YAMAZAKI FUTOSHI , SHIAKI TAKUYA
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/13357 , G03B21/14
摘要： PROBLEM TO BE SOLVED: To allow a display screen of a liquid crystal panel to be illuminated uniformly as a whole by reducing the number of lenses to be used. SOLUTION: A discharge lamp 1 is installed in the center part on a lamp reflector 2, and a concave reflecting surface 3 is provided with an array of elliptical reflecting surfaces 3a, 3b,.... Moreover, a lens surface 5a of a multi-lens 5 opposing the reflecting surface 3 is provided with an array of convex lens surfaces 7a, 7b,... one-to-one corresponding to the elliptical reflecting surfaces 3a, 3b,..., and the lens surface 5b on the rear side forms a convex lens surface. Here, arbitrary elliptical reflecting surfaces 3a, 3b,... form a part of the elliptical surfaces having their focal points on the convex lens surfaces of the multi-lens 5 corresponding thereto and at a light emiting body 1a of the discharge lamp 1. Luminous fluxes divided on the elliptical reflecting surfaces 3a, 3b... are superimposed on each other through the multi-lens 5 to illuminate a liquid crystal panel 8.

8. 发明专利

JPH08211384A POLARIZER AND PROJECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME 失效
公开(公告)号：JPH08211384A
公开(公告)日：1996-08-20
申请号：JP1568795
申请日：1995-02-02
申请人： HITACHI LTD
发明人： TSUNODA TAKASHI , DEGUCHI MASAHARU , YAMAZAKI FUTOSHI , INAGE HISAO , MARUYAMA TAKESUKE
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/13357 , H04N5/74
摘要： PURPOSE: To provide a compact projection type liquid crystal display device of high reliability by reducing the temperature rise of the incident side polarizing plate of a liquid crystal display element by a thin polarizer. CONSTITUTION: The polarizer 5 is constituted by forming a large number of slender projecting parts having a right triangle shaped cross section side by side along the flat surface of a transparent plate on both sides of the thin transparent plate, and the polarizer is arranged so that the incident angle of light with respect to the oblique side of the projecting part may become an angle of polarization, plural polarizers 5 are placed one upon another. And also, the projection type liquid crystal display device is constituted of an illuminator 1, a liquid crystal display element 6 for displaying an image by transmitting the outgoing light from the illuminator 1 and a projecting lens 9 for enlarging the image displayed by the liquid crystal display element 6 on a screen 10, and the polarizer 5 is installed between the illuminator 1 and the liquid crystal display element 6.

9. 发明专利

JPH02176614A AUTOMATIC FOCUSING DEVICE 失效
公开(公告)号：JPH02176614A
公开(公告)日：1990-07-09
申请号：JP32944988
申请日：1988-12-28
申请人： HITACHI LTD
发明人： DEGUCHI MASAHARU , SANO KENJI , TANITSU MASAHIKO , TSUNODA TAKASHI , SATO HIRONOBU
IPC分类号： G02B7/28 , G02B15/14
摘要： PURPOSE:To make a zoom lens compact on the whole by providing operation for image plane position compensation by the variable power of a front lens group and incorporating the focus lens of a master lens group in a control system which performs focusing operation with a video signal. CONSTITUTION:A zoom lens system consists of the front lens group 1 which has positive refracting power and moves in the optical axis direction to hold an image plane position varying the variable power invariably constant, a variator lens group 2 which has a negative refractive index and moves in the optical axis direction to perform a variable power operation for varying the focal length of the whole zoom lens system, and the master lens group 3 which has positive refracting power and moves in the optical axis direction to perform the focusing operation. Then the focus lens 3b of the master lens group 3 as a focusing lens is incorporated in the automatic focusing control mechanism system which performs automatic focusing operation with the video signal. Consequently, there are only two lens groups except lens groups regarding the focusing operation and the zoom lens can be made compact on the whole.

10. 发明专利

JPH02106711A REAR FOCUS TYPE ZOOM LENS 失效
公开(公告)号：JPH02106711A
公开(公告)日：1990-04-18
申请号：JP25944488
申请日：1988-10-17
申请人： HITACHI LTD
发明人： TSUNODA TAKASHI , DEGUCHI MASAHARU , TANITSU MASAHIKO , MARUYAMA TAKESUKE
IPC分类号： G02B15/167
摘要： PURPOSE:To decrease the number of lens elements and to well correct various aberrations at the time of focusing by dividing a master lens group to a 1st lens group and a 2nd lens group, constituting the 2nd lens group movably on the optical axis and using this lens for focusing. CONSTITUTION:The master lens group IV is constituted of the two lens groups IV1, IV2. The lens group IV1 on the object side and the lens group IV2 on the image plane VI side are respectively constituted of 3 elements of lenses and, therefore, the master lens group is constituted of 6 elements of the lenses in total. The lens group IV2 is of the triplet configuration of convex, concave and convex and has the lens arrangement suitable for correction of various aberrations. The lens group IV1 has the effect of making the ray focused at the center of the image plane VI incident to the lens group IV2 in nearly parallel with the optical axis. The incident angle and height of the rays to this lens group IV2 are maintained nearly constant even if the lens group IV2 is moved on the optical axis for the purpose of focusing. The fluctuation in aberrations is thus decreased to the time of focusing. The various aberrations over the entire part of the zoom lens are thus well corrected over the entire focusing range by the master lens group IV in this way.

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