公开(公告)号：US5135300A

公开(公告)日：1992-08-04

申请号：US645631

申请日：1991-01-25

申请人： Eiichi Toide ,  Shinsuke Shikama ,  Mitsushige Kondo ,  Hiroshi Kida ,  Masahiro Usui

发明人： Eiichi Toide ,  Shinsuke Shikama ,  Mitsushige Kondo ,  Hiroshi Kida ,  Masahiro Usui

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。

公开(公告)号：US5142387A

公开(公告)日：1992-08-25

申请号：US682626

申请日：1991-04-09

申请人： Shinsuke Shikama ,  Masahiro Usui ,  Eiichi Toide ,  Hiroshi Kida ,  Mitsushige Kondo

发明人： Shinsuke Shikama ,  Masahiro Usui ,  Eiichi Toide ,  Hiroshi Kida ,  Mitsushige Kondo

IPC分类号： F21S8/00 ,  F21V7/00 ,  F21V7/04 ,  G02B5/00 ,  G02B5/10 ,  G02B17/06 ,  G02B27/30 ,  H04N9/31

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。

公开(公告)号：US5321789A

公开(公告)日：1994-06-14

申请号：US760887

申请日：1991-09-17

申请人： Hiroshi Kida ,  Masahiro Usui ,  Eiichi Toide ,  Shinsuke Shikama ,  Mitsushige Kondo

发明人： Hiroshi Kida ,  Masahiro Usui ,  Eiichi Toide ,  Shinsuke Shikama ,  Mitsushige Kondo

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。

公开(公告)号：US5123729A

公开(公告)日：1992-06-23

申请号：US687942

申请日：1991-04-19

申请人： Mitsushige Kondo ,  Shinsuke Shikama ,  Eiichi Toide ,  Hiroshi Kida ,  Masahiro Usui

发明人： Mitsushige Kondo ,  Shinsuke Shikama ,  Eiichi Toide ,  Hiroshi Kida ,  Masahiro Usui

IPC分类号： G03B21/00 ,  G02B19/00 ,  G02F1/13 ,  H04N5/74 ,  H04N9/31

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。

公开(公告)号：US5691785A

公开(公告)日：1997-11-25

申请号：US659562

申请日：1996-06-10

申请人： Masahiro Usui ,  Hiroshi Kida ,  Shinsuke Shikama ,  Mitsushige Kondo

发明人： Masahiro Usui ,  Hiroshi Kida ,  Shinsuke Shikama ,  Mitsushige Kondo

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。

公开(公告)号：US5570209A

公开(公告)日：1996-10-29

申请号：US203607

申请日：1994-02-28

申请人： Masahiro Usui ,  Hiroshi Kida ,  Shinsuke Shikama ,  Mitsushige Kondo

发明人： Masahiro Usui ,  Hiroshi Kida ,  Shinsuke Shikama ,  Mitsushige Kondo

IPC分类号： G02B27/28 ,  H04N9/31 ,  G02F1/335 ,  G03B21/28

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。

公开(公告)号：US5765934A

公开(公告)日：1998-06-16

申请号：US690670

申请日：1996-07-31

申请人： Shinji Okamori ,  Akira Daijogo ,  Hiroshi Kida ,  Shinsuke Shikama ,  Eiichi Toide

发明人： Shinji Okamori ,  Akira Daijogo ,  Hiroshi Kida ,  Shinsuke Shikama ,  Eiichi Toide

IPC分类号： F21V8/00 ,  H04N5/74 ,  H04N9/31 ,  G03B21/28

CPC分类号： H04N9/3105 ,  G02B6/0006 ,  G03B21/2013 ,  H04N9/3147 ,  H04N9/315 ,  H04N9/3164

摘要： In a light source apparatus for use with a projection type display, at least one light source is provided for emitting light. A reflector is provided correspondingly to the light source in order to gather the light emitted from the light source into a small area to form a converged luminous flux. A light guide has at least one light input section into which the luminous flux is coupled. The light input section is provided correspondingly to the light source. The light guide combines the luminous flux received through the light input sections into a single beam of luminous flux. The light-guide has at least one light output section from which said luminous flux is output. The light source apparatus may also include light-refracting element provided between the reflector and the light-guide. The light-refracting element receives the converged luminous flux from the reflector to refract the converged luminous flux so as to couple the converged luminous flux, as a uniform luminous flux, into the light-guide.

摘要翻译： 在与投影型显示器一起使用的光源装置中，提供至少一个用于发光的光源。 对应于光源设置反射器，以将从光源发射的光聚集成小面积以形成会聚光束。 光导具有至少一个光输入部分，光通量耦合到光输入部分中。 光输入部分对应于光源设置。 光导将通过光输入部分接收的光通量组合成单光束。 光导具有至少一个输出所述光通量的光输出部分。 光源装置还可以包括设置在反射器和光导之间的光折射元件。 光折射元件从反射器接收会聚光束，以折射会聚光束，以将作为均匀光通量的会聚光束耦合到光导中。

公开(公告)号：US5634704A

公开(公告)日：1997-06-03

申请号：US239688

申请日：1994-05-09

申请人： Shinsuke Shikama ,  Hiroshi Kida

发明人： Shinsuke Shikama ,  Hiroshi Kida

IPC分类号： G02F1/13 ,  G02B27/00 ,  G02F1/1335 ,  G02F1/13357 ,  G03B21/14 ,  G03B21/20 ,  H04N5/74

CPC分类号： G03B21/208

摘要： A projection-type display device comprises a pillar optical element having an injection end and an emitting end, a lamp, an elliptical mirror for condensing light emitted by the lamp in the vicinity of the injection end, a first lens for forming an image of the emitting end, a light valve for forming a picture image on a surface having an image display area, and a projection lens. The image of the emitting end of the pillar optical element is projected by the first lens on the image display area within the surface of the light valve. The projection lens magnifies and projects the picture image displayed by the light valve on the screen.

摘要翻译： 投影型显示装置包括具有注射端和发射端的柱状光学元件，灯，用于聚集由灯在喷射端附近发出的光的椭圆镜，用于形成喷射端的图像的第一透镜 发光端，用于在具有图像显示区域的表面上形成图像的光阀和投影透镜。 柱状光学元件的发射端的图像被第一透镜投射在光阀表面内的图像显示区域上。 投影透镜将由光阀显示的图像放大并投影到屏幕上。

公开(公告)号：US5572362A

公开(公告)日：1996-11-05

申请号：US427815

申请日：1995-04-26

申请人： Shinsuke Shikama ,  Hiroshi Kida ,  Akira Daijogo

发明人： Shinsuke Shikama ,  Hiroshi Kida ,  Akira Daijogo

IPC分类号： G02B3/04 ,  G02B5/30 ,  G02B13/18 ,  G02B19/00 ,  H04N9/31

CPC分类号： H04N9/3105 ,  G02B13/18 ,  G02B19/0014 ,  G02B19/0047 ,  G02B3/04 ,  G02B5/3066 ,  H04N9/315 ,  H04N9/3167

摘要： A light source apparatus of reduced thickness and high extinction ratio employs a series of columnar component elements of rhomboidal cross section. Incident and emergent surfaces are formed in periodic folds with each fold arranged for light incidence at and angle equal to or greater than the Brewster angle. At the Brewster angle, P-polarized light is transmitted without loss. For incidence at an angle greater than the Brewster angle, the transmittance of the S-polarized light is decreased with a slight decrease in transmittance of the P-polarized light, for a net increase in the extinction ratio. By using a multilayer structure, the extinction ratio is further increased. By inclusion of an ultraviolet/infrared cut-off filter and forced cooling, deterioration and deformation of the polarizing element are reduced. Arrangement of the layers with spacers and air layers prevents a decrease in extinction ratio due to multiple reflections.

摘要翻译： 厚度减小，消光比高的光源装置采用菱形截面的一系列柱状构件。 事件和紧急表面以周期性折叠形成，每个折叠布置用于光入射，角度等于或大于布鲁斯特角。 在布鲁斯特角度，P偏振光无损耗地传输。 对于大于布鲁斯特角度的角度的入射，S偏振光的透射率随着P偏振光的透射率的轻微降低而降低，因为消光比的净增加。 通过使用多层结构，消光比进一步提高。 通过包含紫外/红外截止滤光器和强制冷却，偏振元件的劣化和变形减小。 具有间隔物和空气层的层的布置防止由于多次反射而引起的消光比降低。

公开(公告)号：US5760875A

公开(公告)日：1998-06-02

申请号：US780284

申请日：1997-01-08

申请人： Akira Daijogo ,  Hiroshi Kida ,  Shinji Okamori ,  Shinsuke Shikama

发明人： Akira Daijogo ,  Hiroshi Kida ,  Shinji Okamori ,  Shinsuke Shikama

IPC分类号： F21V21/10 ,  H04N9/31 ,  G03B21/28

CPC分类号： G03B21/16 ,  G03B21/2026 ,  G03B21/2053 ,  G03B33/12 ,  H04N9/3105 ,  H04N9/3144 ,  H04N9/315 ,  H04N9/3152

摘要： A projection display device comprises: a diaphragm for the illuminating system disposed in the vicinity of a focal point of the light collected by the concave mirror; a collimation lens for rendering parallel the light passing through the aperture of the first diaphragm; a scattering-type liquid crystal light valve for forming forming image on its displaying surface; a field lens for converging the light rendered parallel by the collimation lens; a projection lens having an entrance pupil disposed in the vicinity of a focal point of the light converged by the field lens; and a second diaphragm having an aperture and provided in the projection lens. An aperture varying section of the first diaphragm varies the aperture diameter of the diaphragm of the illuminating system, and the other aperture varying section varies the aperture diameter of the diaphragm of the projection lens, thereby varying the diameter of an entrance pupil.