Overhead projector with a spatial light modulator
    1.
    发明授权
    Overhead projector with a spatial light modulator 失效
    具有空间光调制器的架空投影机

    公开(公告)号:US5325137A

    公开(公告)日:1994-06-28

    申请号:US935946

    申请日:1992-08-27

    CPC classification number: G03B21/132 H04N9/3102 Y10S353/03

    Abstract: An overhead projector for irradiating a spatial light modulator with reading light to read out a subject image written in the spatial light modulator with writing light and projecting the subject image read out with the reading light, wherein the spatial light modulator consists of photoconductive layer for receiving the writing light coming from a subject to reproduce the subject image, light modulating layer formed by a liquid crystal of which molecules are arranged in a homeotropic orientation for modulating the reading light of which a waveband is limited to a prescribed range according to the subject image reproduced in the photoconductive layer, and a dielectric mirror having wavelength selectivity for reflecting the reading light with the waveband modulated by the light modulating layer.

    Abstract translation: 一种用于用读取光照射空间光调制器的高架投影仪,用写入光读出写在空间光调制器中的被摄体图像,并投射用读取光读出的被摄体图像,其中空间光调制器由用于接收的光电导层 来自被摄体的写入光再现被摄体图像,由其分子以垂直取向排列的液晶形成的光调制层,用于根据被摄体图像将波段限制在规定范围内的读取光 在光电导层中再现的介质镜和具有由光调制层调制的波段反射读取光的波长选择性的介电镜。

    Light-to-light conversion method, display unit using the same, and
light-to-light conversion element incorporated therein
    2.
    发明授权
    Light-to-light conversion method, display unit using the same, and light-to-light conversion element incorporated therein 失效
    光 - 光转换方法,使用该光转换方法的显示单元和并入其中的光 - 光转换元件

    公开(公告)号:US5299042A

    公开(公告)日:1994-03-29

    申请号:US707813

    申请日:1991-05-30

    CPC classification number: G02F1/135 H04N9/3105 G02F1/134336

    Abstract: A display unit which can be used with various sources of information includes a light-to-light conversion element composed of first and second stripe electrodes arranged to jointly form a matrix electrode, and a photoconductive layer and a light modulation layer disposed between the first and second stripe electrodes, the impedance of the photoconductive layer changes with information written to the light-to-light conversion element. The photoconductive layer is irradiated with a linear light beam deflected in a direction to intersect first stripe electrode, while at the same time successive pieces of information to be inputted to corresponding picture elements are supplied to respective stripe electrode elements of the first stripe electrode. With the use of the matrix electrode, information can be written to and read out from the light-to-light conversion element at a higher response rate with high resolution.

    Abstract translation: 可以与各种信息源一起使用的显示单元包括由布置成共同形成矩阵电极的第一和第二条带电极组成的光 - 光转换元件,以及设置在第一和第二条带电极之间的光电导层和光调制层 第二条纹电极,光电导层的阻抗随着写入光 - 光转换元件的信息而改变。 光电导层被照射在与第一条形电极相交的方向上偏转的线性光束,同时将要输入到相应的像素的连续的信息条提供给第一条形电极的各个条形电极元件。 通过使用矩阵电极,可以以较高的分辨率以较高的响应速度将光信息写入光读出转换元件。

    Driving method for photoconductive-type SLM
    3.
    发明授权
    Driving method for photoconductive-type SLM 失效
    光导型SLM的驱动方法

    公开(公告)号:US5294992A

    公开(公告)日:1994-03-15

    申请号:US878080

    申请日:1992-05-04

    CPC classification number: G09G3/002 G02F1/135 G09G3/02

    Abstract: A light-light transfer method using a spatial light modulator realizes an image display with a high utilizing of light without causing an undesirable residual image. The spatial light modulator is constituted to include two electrodes and at least a photoconductor layer member and a photo-modulation layer member used in a birefringence operating mode both being sandwiched between the two electrodes. A writing light is entered from the photoconductive layer member side so that its exposure value varies from the minimum exposure value to the maximum exposure value in a condition that a predetermined operation voltage is supplied between the two electrodes. In this instant, a voltage applied between both ends of the photo-modulation layer member corresponds to a voltage obtained by subtracting a voltage drop amount, occurring in the photoconductor layer member due to an incidence of the writing light, from said predetermined operation voltage applied in advance between said two electrodes. An operational condition of the spatial light modulator is set so that the voltage applied between both ends of the photo-modulation layer member becomes a voltage monotonously exceeding a voltage value corresponding to an extreme value of a degree of photo-modulation in a characteristic curve showing a relationship between an applied voltage and a degree of photo-modulation in the photo-modulation layer member, at the timing when the writing light of the maximum exposure value is entered into the spatial light modulator.

    Abstract translation: 使用空间光调制器的光传输方法利用光的高利用率实现图像显示,而不会引起不期望的残留图像。 空间光调制器被构造为包括两个电极和至少一个光电导体层构件和用于双折射操作模式的光调制层构件,两者都夹在两个电极之间。 在光电导层部件侧进入写入光,使得其曝光值在两个电极之间提供预定操作电压的条件下,从最小曝光值变化到最大曝光值。 在该时刻,施加在光调制层构件的两端之间的电压对应于通过从施加的预定操作电压减去由于写入光的入射而在光电导体层构件中发生的电压降量而获得的电压 提前在所述两个电极之间。 空间光调制器的操作条件被设置为使得在光电调制层部件的两端之间施加的电压在特性曲线中变为单调超过对应于光调制度的极值的电压值的电压, 在最大曝光值的写入光进入空间光调制器的时刻,光电调制层部件中的施加电压和光调制度之间的关系。

    Image processing system for display, recording and reproducing image
    5.
    发明授权
    Image processing system for display, recording and reproducing image 失效
    用于显示,记录和再现图像的图像处理系统

    公开(公告)号:US5565882A

    公开(公告)日:1996-10-15

    申请号:US401331

    申请日:1995-03-09

    Abstract: An image processing system for an image display comprising an image data producing device for producing image data corresponding to an image to be displayed and a display device for displaying the image on the basis of the produced image data. The image data producing device divides the image data into a plurality of data sections respectively corresponding to image areas constituting the image so that each of the plurality of data sections is produced as serial data and the plurality of data sections are outputted in parallel. The display device includes a number of pixel elements continuously arranged one-dimensionally or two-dimensionally and equally divided into a plurality of element sections respectively corresponding to the plurality of data sections. The display device is responsive to the image data from the image data producing device so that the plurality of data sections are inputted in parallel to the plurality of element sections, whereby the display device displays the image on a screen on the basis of the plurality of inputted data sections. This arrangement can speedily display a jointless high-grade image in real time.

    Abstract translation: 一种用于图像显示的图像处理系统,包括用于产生与要显示的图像相对应的图像数据的图像数据产生装置和用于基于所产生的图像数据显示图像的显示装置。 图像数据产生装置将图像数据分成与构成图像的图像区域对应的多个数据部分,使得多个数据部分中的每一个被生成为串行数据,并且多个数据部分被并行输出。 显示装置包括连续地一维或二维地排列并分别分别对应于多个数据部分的多个元件部分的多个像素元件。 显示装置响应于来自图像数据产生装置的图像数据,使得多个数据部分被并行地输入到多个元素部分,由此显示装置基于多个元素部分在屏幕上显示图像 输入数据部分。 这种安排可以实时快速地显示无缝高档图像。

    Light to light modulator with reading light of specified wavelength
    7.
    发明授权
    Light to light modulator with reading light of specified wavelength 失效
    具有指定波长读取光的光对光调制器

    公开(公告)号:US5381188A

    公开(公告)日:1995-01-10

    申请号:US878046

    申请日:1992-05-04

    CPC classification number: G09G3/002 G09G3/02

    Abstract: The present invention offers a display system for displaying information comprising a linear array of N light-emitting devices emitting light of predetermined wavelength, the devices are arranged respectively with N pixels, a stream of the information is divided into pieces each of which containing the N pixels, and the N light-emitting devices are caused to emit N light beams simultaneously in a form of array during a given period for every divided piece of the information, the every divided piece of information may correspond to one line of a frame of picture, the N light beams are intensity-modulated respectively with the divided piece of the information, the N light beams are deflected simultaneously in a direction perpendicular to a direction of the array of the N light beams, and a spatial light modulator having a photoconductive layer and a light modulation layer interposed between a pair of electrodes, the photoconductive layer is responsive to the deflected N light beams incident thereto through a focusing lens as a writing light, and a reading light of visible wavelength which is shorter than the predetermined wavelength of the emitted light from the linear array of the N light-emitting devices, the reading light irradiates the photomodulation layer of the spatial light modulator to read out and display the written information thereon.

    Abstract translation: 本发明提供了一种显示系统,用于显示包括发射预定波长的光的N个发光装置的线性阵列的信息,该装置分别具有N个像素,信息流被分成各自包含N个 像素,并且使N个发光器件在每个分割的信息的给定周期内以阵列的形式同时发射N个光束,每个分割的信息可以对应于一帧图像的一行 分别用分割的信息对N个光束进行强度调制,N个光束在与N个光束的阵列的方向垂直的方向上同时偏转,并且具有光导层的空间光调制器 以及插入在一对电极之间的光调制层,光电导层响应于偏转的N个光束 通过作为书写光的聚焦透镜和与N个发光器件的线阵列相比发射光的预定波长短的可见波长的读取光,读取光照射光电调制层 空间光调制器读出并显示其上的书面信息。

    Display device
    8.
    发明授权
    Display device 失效
    显示设备

    公开(公告)号:US5327229A

    公开(公告)日:1994-07-05

    申请号:US16732

    申请日:1993-02-11

    CPC classification number: H04N9/312 H04N9/3111

    Abstract: A clear color image having a high contrast ratio without particular coloration is displayed on a screen by improved display apparatus. Such display apparatus is comprised of a spatial light modulator including a photo-conductive layer, a photo-modulator layer and a dielectric mirror, a device for writing color images of different colors onto the spatial light modulator time-divisionally in a sequence of the different colors, a reading device for producing reading lights having different colors in synchronism with time-divisional writing of the color images, and for projecting the reading lights to the spatial light modulator, a driving device for supplying the spatial light modulator with different voltages and frequencies correspondingly with the reading light of different colors and in synchronism with time-divisional projections of the reading lights, and a device for projecting the color images read out from the spatial light modulator on the display device.The dielectric mirror may have a light absorbance characteristic controlled to be wavelength-selective to absorb a color of light to which the photo-conductive layer is most sensitive, so that lights having different colors leaked into the photo-conductive layer through the dielectric mirror are controlled to cause a uniform impedance of the photo-conductive layer.

    Abstract translation: 通过改进的显示装置在屏幕上显示具有没有特定着色的高对比度的清晰彩色图像。 这种显示装置由包括光电导层,光调制层和电介质镜的空间光调制器组成,用于将不同颜色的彩色图像分时地以不同的顺序分列在空间光调制器上的装置 颜色,用于产生与彩色图像的分时写入同步的具有不同颜色的读取光并且用于将读取光投影到空间光调制器的读取装置,用于向不同的电压和频率提供空间光调制器的驱动装置 对应于不同颜色的读取光并且与读取灯的时分投影同步,以及用于将从空间光调制器读出的彩色图像投影到显示装置上的装置。 电介质镜可以具有被控制为波长选择性以吸收光敏层最敏感的光的颜色的光吸收特性,使得具有不同颜色的光通过电介质镜泄漏到光导层中 被控制以导致光导层的均匀阻抗。

    Projector lens system having three lens groups for image projector
    9.
    发明授权
    Projector lens system having three lens groups for image projector 失效
    具有用于图像投影仪的三个透镜组的投影仪透镜系统

    公开(公告)号:US5357289A

    公开(公告)日:1994-10-18

    申请号:US180705

    申请日:1994-01-13

    CPC classification number: H04N9/3105 H04N5/7441 H04N7/0122

    Abstract: This specification discloses an image projector for projecting a tri-color composite optical image on a screen as a magnified optical image. A reading light beam emitted from a light source is separated into three color beams, e.g., Red, Green and Blue color beams through a tri-color separation and composition optical system. The separated color beams are irradiated on image forming devices provided correspondingly with Red, Green and Blue color images to read out color images respectively therefrom. Each of the reflected light beams from the image forming device carrying color image information impinges again on the tri-color separation and composition optical system to compose a composite image beam. The composite image beam is projected on the screen through an optical lens system comprising a first lens group, a second lens group and a third lens group disposed along an optical axis in order. The first lens group forms a composite color image on the second lens group by focusing the composite image beam from the tri-color separation and composition optical system. The second lens group converges the composite image beam therefrom to the third lens group. The third lens group projects the composite image beam on the screen as a magnified image. A focal length of the lens system is arranged shorter than a back-focal length defined as a distance between the front surface of the first lens group and a object focal point thereof.

    Abstract translation: 本说明书公开了一种用于在屏幕上投影三色复合光学图像作为放大的光学图像的图像投影仪。 从光源发射的读取光束通过三色分离和组合光学系统分离成三色光束,例如红色,绿色和蓝色光束。 分离的彩色光束照射在相应于红色,绿色和蓝色彩色图像的图像形成装置上,以分别从中读出彩色图像。 来自携带彩色图像信息的图像形成装置的每个反射光束再次入射到三色分离和组合光学系统上以构成合成图像束。 复合图像束通过包括依次设置在光轴上的第一透镜组,第二透镜组和第三透镜组的光学透镜系统投影在屏幕上。 第一透镜组通过聚焦来自三色分离和组合光学系统的合成图像束在第二透镜组上形成复合彩色图像。 第二透镜组将合成图像束从其收敛到第三透镜组。 第三透镜组将合成图像束投影在屏幕上作为放大图像。 布置透镜系统的焦距比被定义为第一透镜组的前表面和其物体焦点之间的距离的后焦距短。

    Drive apparatus for optical element array
    10.
    发明授权
    Drive apparatus for optical element array 失效
    光学元件阵列驱动装置

    公开(公告)号:US5250939A

    公开(公告)日:1993-10-05

    申请号:US787867

    申请日:1991-11-05

    CPC classification number: G06K15/1247

    Abstract: A drive apparatus for an optical element array includes a counter counting clock pulses and being periodically reset at a horizontal scanning period. The counter outputs first and second counter signals out of phase with each other. A latch holds a pixel-corresponding segment of an input image signal. One of clock signals out of phase with each other is selected in response to the pixel-corresponding input-signal segment held by the latch. A first comparator compares the first counter signal and the pixel-corresponding input-signal segment held by the latch, and outputs a first identity signal when the first counter signal and the pixel-corresponding input-signal segment are equal to each other. A second comparator compares the second counter signal and the pixel-corresponding input-signal segment held by the latch, and outputs a second identity signal when the second counter signal and the pixel-corresponding input-signal segment are equal to each other. A drive pulse is generated which starts in synchronism with a start of a horizontal scanning period and which ends in response to the selected clock signal and in response to the first and second identity signals. An optical element in the array is driven in response to the drive pulse.

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