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1.发明授权Color projection type display apparatus having three liquid displays of same structure 失效具有三个相同结构的液体显示器的彩色投影型显示装置
公开(公告)号：US5691785A
公开(公告)日：1997-11-25
申请号：US659562
申请日：1996-06-10
IPC分类号： G02B27/28 , H04N9/31 , G02F1/1335
CPC分类号： H04N9/3105 , G02B27/283 , H04N9/3167
摘要： The present invention provides a color projector utilizing three liquid crystal display elements. The natural light is separated into illuminating rays of red, green and blue colors by a dichroic mirror, each of these illuminating rays being used to illuminate the corresponding one of the liquid crystal display elements. Each of the liquid crystal display elements is controlled by a desired image signal with respect to its transmittance at each pixel. After passed through the liquid crystal display elements, three kinds of colored illuminating rays are again synthesized by the other dichroic mirror to form a light beam which in turn is enlarged and projected by a projecting lens on a screen. By providing light source means including means for converting the natural light into the linearly polarized beam, the illuminating rays may have their polarizing angles coincide with each other without any loss of light. As the linearly polarized beam is reflected by the mirror system, the illuminating rays of red, green and blue colors are changed with respect to their polarizing angels. Depending on the changed polarizing angles, the polarizing angle of the light rays incident on each of the liquid crystal display elements may be adjusted to remove any loss of light.
摘要翻译： 本发明提供一种利用三个液晶显示元件的彩色投影仪。 通过二向色镜将自然光分离为红色，绿色和蓝色的照射光，这些照射光用于照射相应的一个液晶显示元件。 每个液晶显示元件通过相对于其在每个像素处的透射率的期望的图像信号来控制。 在通过液晶显示元件之后，再次通过另一个分色镜合成三种彩色照明光线，以形成光束，该光束又由投影透镜放大并投影在屏幕上。 通过提供包括用于将自然光转换成线偏振光束的装置的光源装置，照射光线可以使它们的偏振角度彼此一致而没有任何光损失。 当线偏振光束被反射镜系统反射时，红色，绿色和蓝色的照明光线相对于其极化天使而改变。 根据变化的偏振角，可以调整入射到每个液晶显示元件上的光线的偏振角，以消除任何光的损失。
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2.发明授权Projection display apparatus, and light guide tube/light valve for use in the same 失效投影显示装置，以及用于其的导光管/光阀
公开(公告)号：US5321789A
公开(公告)日：1994-06-14
申请号：US760887
申请日：1991-09-17
IPC分类号： G02B6/06 , G02B6/08 , G02F1/1333 , G02F1/1334 , G02F1/1335 , H04N5/74 , H04N9/31 , G02B6/12
CPC分类号： H04N5/7441 , G02B6/06 , G02B6/08 , G02F1/133524 , H04N9/3105 , G02F1/1334 , G02F2001/133302
摘要： A light valve is a planar member in which liquid crystals are hermetically sealed, and allows the transmission of light in an almost parallel direction and selectively scattering undesired light. On a rear surface of the light valve is disposed a light guide tube which contains a plurality of minute apertures. Alternatively, one of the substrates which constitute the light valve may be made of a fiber plate. The fiber plate has a structure in which short optical fibers are stacked. The light guide tube or the fiber plate converges a luminous flux emitted from the light valve to improve the contrast of an image. A projection display apparatus is constituted of a light source, a light valve, either a light guide tube or a fiber plate, a lens, and a projection lens. A luminous flux emitted from either the light guide tube or the fiber plate is incident on the pupil of the projection lens by way of the lens, and the projection lens casts this luminous flux onto a screen, thus forming a projected image. The selectively scattered undesired light cannot pass through the light guide tube or file plate.
摘要翻译： 光阀是其中液晶被气密密封的平面构件，并且允许光在几乎平行的方向上透射并选择性地散射不期望的光。 在光阀的后表面设置有包含多个微小孔的导光管。 或者，构成光阀的基板之一可以由纤维板制成。 纤维板具有堆叠短纤维的结构。 导光管或光纤板收敛从光阀发射的光通量，以改善图像的对比度。 投影显示装置由光源，光阀，导光管或光纤板，透镜和投影透镜构成。 从导光管或光纤板发出的光束通过透镜入射到投影透镜的光瞳上，并且投影透镜将该光束投射到屏幕上，从而形成投影图像。 选择性散射的不想要的光不能通过导光管或文件板。
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公开(公告)号：US5135300A
公开(公告)日：1992-08-04
申请号：US645631
申请日：1991-01-25
IPC分类号： H04N9/31
CPC分类号： H04N9/315
摘要： Three light fluxes are modulated by corresponding light valves so as to project a color image on a screen. An interference filter for selectively transmitting a light flux which is emitted in a direction perpendicular to a light emitting surface of the interference filter is disposed on the light-emitting portion so as to increase the intensity of light fluxes which are emitted in the forward direction. A light-flux-emitting portion of a light source and the light valve have approximately the same configuration so that the intensity of the light fluxes to be projected on the light valves is increased.
摘要翻译： 三个光通量由相应的光阀调制，以便将彩色图像投射在屏幕上。 用于选择性地发射在与干涉滤光器的发光表面垂直的方向上发射的光束的干涉滤光器设置在发光部分上，以便增加沿正向发射的光束的强度。 光源的光束发射部分和光阀具有大致相同的构造，使得要投射到光阀上的光束的强度增加。
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4.发明授权Projection-type display device having light source means including a first and second concave mirrors 失效具有包括第一和第二凹面镜的光源装置的投射型显示装置
公开(公告)号：US5142387A
公开(公告)日：1992-08-25
申请号：US682626
申请日：1991-04-09
CPC分类号： G02B19/0028 , F21V7/0025 , F21V7/04 , G02B19/0047 , G02B27/30 , G02B5/005 , G02B5/10 , H04N9/3152
摘要： The projection-type display device has a light source emitting a parallel luminous flux, a liquid crystal light valve disposed on the luminous flux and outputs a rectangular two-dimensional image to be projected on a screen, and a projection lens magnifying the rectangular two-dimensional image output. The light source has a first concave mirror (parabolic mirror) the reflective surface of which is oriented in the direction of emission of the luminous flux, a lamp laced in front of the first concave mirror, and a second concave mirror (parabolic mirror or spherical mirror), the reflective surface of which is oriented toward the first concave mirror. In the second concave mirror is formed an aperture window, which is a rectangle of substantially similar to that of the liquid crystal light valve and emits a rectangular luminous flux. The beam from the lamp is reflected by the first concave mirror, and one or more times by the second concave mirror, becoming a parallel beam oriented in the direction of the optical axis. The parallel light beam is made into a luminous flux of rectangular cross section by the rectangular aperture window. Accordingly, luminous flux is not blocked wastefully, but serves to increase the brightness of the projected image.
摘要翻译： 投影型显示装置具有发出平行光束的光源，配置在光束上的液晶光阀，输出要投影在屏幕上的矩形二维图像，以及放大矩形二维图像的投影透镜， 三维图像输出。 光源具有第一凹面镜（抛物面镜），其反射表面沿着光束的发射方向定向，一个位于第一凹面镜前面的灯和一个第二凹面镜（抛物面镜或球形 反射镜），其反射表面朝向第一凹面镜。 在第二凹面镜中形成有与液晶光阀基本相同的矩形的孔眼，并且发出矩形光束。 来自灯的光束被第一凹面镜反射，并且被第二凹面镜反射一次或多次，成为沿光轴方向取向的平行光束。 平行光束由矩形孔径窗形成为矩形截面的光通量。 因此，光通量不被浪费地阻挡，但是用于增加投影图像的亮度。
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5.发明授权Color projection type display apparatus having three liquid crystal displays of same structure 失效具有三个相同结构的液晶显示器的彩色投影型显示装置
公开(公告)号：US5570209A
公开(公告)日：1996-10-29
申请号：US203607
申请日：1994-02-28
CPC分类号： H04N9/3105 , G02B27/283 , H04N9/3167
摘要： The present invention provides a color projector utilizing three liquid crystal display elements. The natural light is separated into illuminating rays of red, green and blue colors by a dichroic mirror, each of these illuminating rays being used to illuminate the corresponding one of the liquid crystal display elements. Each of the liquid crystal display elements is controlled by a desired image signal with respect to its transmittance at each pixel. After passed through the liquid crystal display elements, three kinds of colored illuminating rays are again synthesized by the other dichroic mirror to form a light beam which in turn is enlarged and projected by a projecting lens on a screen. By providing light source means including means for converting the natural light into the linearly polarized beam, the illuminating rays may have their polarizing angles coincide with each other without any loss of light. As the linearly polarized beam is reflected by the mirror system, the illuminating rays of red, green and blue colors are changed with respect to their polarizing angels. Depending on the changed polarizing angles, the polarizing angle of the light rays incident on each of the liquid crystal display elements may be adjusted to remove any loss of light.
摘要翻译： 本发明提供一种利用三个液晶显示元件的彩色投影仪。 通过二向色镜将自然光分离为红色，绿色和蓝色的照射光，这些照射光用于照射相应的一个液晶显示元件。 每个液晶显示元件通过相对于其在每个像素处的透射率的期望的图像信号来控制。 在通过液晶显示元件之后，再次通过另一个分色镜合成三种彩色照明光线，以形成光束，该光束又由投影透镜放大并投影在屏幕上。 通过提供包括用于将自然光转换成线偏振光束的装置的光源装置，照射光线可以使它们的偏振角度彼此一致而没有任何光损失。 当线偏振光束被反射镜系统反射时，红色，绿色和蓝色的照明光线相对于其极化天使而改变。 根据变化的偏振角，可以调整入射到每个液晶显示元件上的光线的偏振角，以消除任何光的损失。
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公开(公告)号：US5123729A
公开(公告)日：1992-06-23
申请号：US687942
申请日：1991-04-19
CPC分类号： H04N9/3152 , H04N5/7441
摘要： In a projection display device having an illumination optical system which converts the light emitted from a point light source into a substantially parallel luminous flux, a light valve which modulates the light flux, and an optical projection system which projects images on the light valve onto a screen, the illumination optical system converts the light into a substantially parallel luminous flux having a cross section of substantially the same size and shape, e.g., rectangular shape, as the shape of the frame of the light valve.
摘要翻译： 在具有将从点光源发出的光转换为大致平行的光束的照明光学系统的投影型显示装置中，调整光通量的光阀和将光阀上的图像投影到 照明光学系统将光转换成具有与光阀的框架的形状相似的大小和形状（例如矩形）的横截面的基本平行的光束。
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公开(公告)号：US4817072A
公开(公告)日：1989-03-28
申请号：US66009
申请日：1987-06-24
申请人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
发明人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
CPC分类号： G11B7/1365 , G11B7/0903 , G11B7/0909 , G11B7/1353 , G11B7/1381 , G11B7/0956
摘要： In an optical type head device comprising a light source for emitting a light beam, a beam splitter, a condensor lens and a light detector for receiving said light beam for photoelectric conversion wherein a diffraction grating is provided to separate the light beam into a plurality of subbeams consisting of a zero-order subbeam and other subbeams so that a focussing error of the spot of the zero-order subbeam on an optical type data storing medium is detected by the fact that the light spot of the zero-order subbeam is deformed on the light detector, and a positional error of the spot of the zero-order subbeam with respect to a data track on the optical type data storing medium is detected depending on the position of the spots of the other subbeams.
摘要翻译： 在包括用于发射光束的光源的光学头部装置中，分束器，聚光透镜和用于接收所述用于光电转换的光束的光检测器，其中提供衍射光栅以将光束分离成多个 由零阶子束和其他子束组成的子束，使得零级子束的光点在光学型数据存储介质上的聚焦误差由零级子光束的光斑变形的事实被检测到 根据其他子光束的光斑的位置来检测光检测器和零级子束相对于光学型数据存储介质上的数据轨迹的位置误差。
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公开(公告)号：US4797545A
公开(公告)日：1989-01-10
申请号：US52860
申请日：1987-04-29
申请人： Shinsuke Shikama , Mitsushige Kondo , Eiichi Toide
发明人： Shinsuke Shikama , Mitsushige Kondo , Eiichi Toide
CPC分类号： G02B6/4246 , G02B6/4206 , G11B7/08 , G11B7/13925
摘要： In an optical head device, the distance between a light source, such as a semiconductor laser, and a condensing lens is altered along the optical axis thereof, so that the resulting spherical aberration may offset any component of spherical aberration that exists in an optical system as an inherent defect, whereby the wave-front aberration of the beam concentrated through the condensing lens is reduced. The device, therefore, includes an optical condensing system of improved aberration and condensation property.
摘要翻译： PCT No.PCT / JP86 / 00416 Sec。 371日期1987年4月29日 102（e）日期1987年4月29日PCT提交1986年8月14日PCT公布。 公开号WO87 / 01466 日期：1987年3月12日。在光学头装置中，诸如半导体激光器的光源和聚光透镜之间的距离沿其光轴改变，使得所得到的球面像差可以抵消球形的任何分量 存在于作为固有缺陷的光学系统中的像差，由此缩小通过聚光透镜聚集的光束的波前像差。 因此，该装置包括具有改善的像差和缩合性能的光学聚光系统。
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公开(公告)号：US5248518A
公开(公告)日：1993-09-28
申请号：US867450
申请日：1992-04-13
申请人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
发明人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
CPC分类号： H01J29/898 , H01J29/18 , H01J29/28 , H01J2229/8916
摘要： A projection cathode ray tube has an interference filter which is disposed at a boundary between a face plate and fluorescent layers. The interference filter is designed to be thinnest at the central area of the CRT and to become gradually thicker toward the peripheral area of the CRT, so that the CRT can produce a uniformly bright image over the central and peripheral areas. The fluorescent layers include a first layer composed of small fluorescent particles and a second layer composed of large fluorescent particles. With this first fluorescent layer, light beams emitted by the second fluorescent layer can be prevented from being reflected in multiple directions, thereby minimizing halo due to such multi-direction reflection of the light beams.
摘要翻译： 投影阴极射线管具有设置在面板和荧光层之间的边界处的干涉滤光器。 干涉滤光片被设计成在CRT的中心区域最薄，并且朝向CRT的周边区域逐渐变厚，使得CRT可以在中央和外围区域上产生均匀的明亮图像。 荧光层包括由小荧光颗粒构成的第一层和由大荧光颗粒组成的第二层。 利用该第一荧光层，可以防止由第二荧光层发射的光束在多个方向上被反射，从而由于光束的这种多方向反射而使晕圈最小化。
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公开(公告)号：US4811329A
公开(公告)日：1989-03-07
申请号：US58879
申请日：1987-06-05
申请人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondo
发明人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondo
CPC分类号： G11B7/126
摘要： An optical type head device comprises a laser beam source for emitting a laser beam, a light focussing means for converging the laser beam on a data storing surface of an optical type data storing medium, a laser beam detecting means which receives the laser beam reflected by the optical type data storing medium and modulated by data held by the same, and converts the data into electric signals, a driving current supplying means for supplying a driving current to the laser beam source. The driving current supplying means comprises a high frequency current generator which supplys to the laser beam source a high frequency current having a waveform ranging from the lower part of the threshold value at which the laser beam source starts emission of the laser beam to the higher part of the thresheld value, and the frequency of the high frequency current is at least twice as high as the maximum frequency component of information which is contained in the data storing medium.
摘要翻译： 一种光学头装置，包括用于发射激光束的激光束源，用于将激光束会聚在光学型数据存储介质的数据存储表面上的光聚焦装置，接收由 光学型数据存储介质，并由其保存的数据进行调制，并将数据转换为电信号;驱动电流供应装置，用于向激光束源提供驱动电流。 驱动电流供给装置包括高频电流发生器，其向激光束源提供具有从激光束源开始激光束发射到较高部分的阈值的下部的波形的高频电流 的高频电流的频率至少是包含在数据存储介质中的信息的最大频率分量的两倍。
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