公开(公告)号：US07554737B2

公开(公告)日：2009-06-30

申请号：US11073893

申请日：2005-03-07

申请人： Richard M. Knox ,  Kevin Hathaway ,  David Kappel ,  Robert E. Fischer ,  Biljana Tadic-Galeb

发明人： Richard M. Knox ,  Kevin Hathaway ,  David Kappel ,  Robert E. Fischer ,  Biljana Tadic-Galeb

IPC分类号： G02B5/02

CPC分类号： G02B5/32 ,  G02B5/0215 ,  G02B5/0252 ,  G02B5/0278 ,  G02B27/0927 ,  G02B27/0944 ,  G02B27/48

摘要： Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.

摘要翻译： 用于提供适合于诸如激光投影系统的成像装置的照明的系统和方法，其中照明图案可通过修改受控角度扩散器的一个或多个特性来调节。 在一个实施例中，高度准直（例如，激光）光束通过全息漫射器以产生用于从扩散器上的每个点发出的光的良好限定的锥角。 该光被聚焦成由扩散器的处方控制的照明图像。 在一个实施例中，扩散器可以被定位成在对应于照明图像的光路中交替地放置具有不同处方的不同区域。 在一个实施例中，可以连续地移动扩散器以消除照明图像中的斑点和“蠕动”。

公开(公告)号：US06771339B2

公开(公告)日：2004-08-03

申请号：US10006737

申请日：2001-10-19

申请人： Richard M. Knox ,  Austin L. Huang

发明人： Richard M. Knox ,  Austin L. Huang

IPC分类号： G02F71335

CPC分类号： G02F1/1347 ,  G02F1/141 ,  G02F2001/133638 ,  G02F2203/02 ,  G02F2203/62

摘要： In a reflective mode FLC application, a ¼-wave plate compensating FLC is used in series with a ¼-wave imaging FLC to compensate for the effects of DC balancing. Alternatively, the compensating wave plate could be any odd ¼-wave multiple, such as 3&lgr;/4, 5&lgr;/4, etc. The FLCs are driven in synchronization between on and off states with the total effective retardation for each FLC being either none or one-half wavelength in a double pass.

摘要翻译： 在反射模式FLC应用中，¼波片补偿FLC与¼波成像FLC串联使用，以补偿直流平衡的影响。 或者，补偿波片可以是任何奇数的1/4波数，例如3λ/4,5λ/ 4等.FLCs在开和关状态之间同步地被驱动，每个FLC的总有效延迟是无或者 双通道的二分之一波长。

公开(公告)号：US06535196B2

公开(公告)日：2003-03-18

申请号：US09846851

申请日：2001-05-03

申请人： Dale S. Walker ,  Richard M. Knox

发明人： Dale S. Walker ,  Richard M. Knox

IPC分类号： G09G336

CPC分类号： G09G3/3651 ,  G09G3/2014 ,  G09G3/3648 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0852 ,  G09G2310/0235 ,  G09G2310/0259 ,  G09G2310/066 ,  G09G2320/0276 ,  H04N5/66 ,  H04N9/30 ,  H04N2005/745

摘要： In a color sequential system using LCDs, the LCD must operate faster than the frame rate because red, green, and blue are done sequentially. Ferroelectric LCDs can do this, but they are not analog devices and so cannot provide analog display levels. Instead, a pulse width modulation (PWM) technique is used. In the system of the present invention, each pixel has three storage devices to hold RGB analog levels. A latch is used to load these values in parallel. Then an analog 3:1 multiplexer is used to select the proper storage device for the current sequential color. The multiplexer output goes to a comparator, which has a sawtooth waveform input at much faster than the frame rate. The comparator output changes with the sawtooth level, so that PWM control is provided for each pixel. As an alternative, standard analog LCD pixels can be sequentially switched between three color input storage devices.

摘要翻译： 在使用LCD的色彩顺序系统中，LCD必须比帧速更快，因为红，绿，蓝依次进行。 铁电LCD可以做到这一点，但它们不是模拟设备，因此不能提供模拟显示级别。 相反，使用脉宽调制（PWM）技术。 在本发明的系统中，每个像素具有三个存储装置以保持RGB模拟电平。 使用锁存器并行加载这些值。 然后使用模拟3：1多路复用器为当前顺序颜色选择正确的存储设备。 多路复用器输出转到比较器，其比锯齿波输入的速度快得多。 比较器输出随锯齿电平而变化，从而为每个像素提供PWM控制。 作为替代，标准模拟LCD像素可以在三个彩色输入存储设备之间顺序切换。

公开(公告)号：US06239780B1

公开(公告)日：2001-05-29

申请号：US09127006

申请日：1998-07-31

申请人： Dale S. Walker ,  Richard M. Knox

发明人： Dale S. Walker ,  Richard M. Knox

IPC分类号： G09G336

CPC分类号： G09G3/3651 ,  G09G3/2014 ,  G09G3/3648 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0852 ,  G09G2310/0235 ,  G09G2310/0259 ,  G09G2310/066 ,  G09G2320/0276 ,  H04N5/66 ,  H04N9/30 ,  H04N2005/745

摘要： In a color sequential system using LCDs, the LCD must operate faster than the frame rate because red, green, and blue are done sequentially. Ferroelectric LCDs can do this, but they are not analog devices and so cannot provide analog display levels. Instead, a pulse width modulation (PWM) technique is used. In the system of the present invention, each pixel has three storage devices to hold RGB analog levels. A latch is used to load these values in parallel. Then an analog 3:1 multiplexer is used to select the proper storage device for the current sequential color. The multiplexer output goes to a comparator, which has a sawtooth waveform input at much faster than the frame rate. The comparator output changes with the sawtooth level, so that PWM control is provided for each pixel. As an alternative, standard analog LCD pixels can be sequentially switched between three color input storage devices.

摘要翻译： 在使用LCD的色彩顺序系统中，LCD必须比帧速更快，因为红，绿，蓝依次进行。 铁电LCD可以做到这一点，但它们不是模拟设备，因此不能提供模拟显示级别。 相反，使用脉宽调制（PWM）技术。 在本发明的系统中，每个像素具有三个存储装置以保持RGB模拟电平。 使用锁存器并行加载这些值。 然后使用模拟3：1多路复用器为当前顺序颜色选择正确的存储设备。 多路复用器输出转到比较器，其比锯齿波输入的速度快得多。 比较器输出随锯齿电平而变化，从而为每个像素提供PWM控制。 作为替代，标准模拟LCD像素可以在三个彩色输入存储设备之间顺序切换。

公开(公告)号：US4071698A

公开(公告)日：1978-01-31

申请号：US758159

申请日：1977-01-10

申请人： Franklin V. Barger, Jr. ,  Richard M. Knox ,  Jefery R. Roberts

发明人： Franklin V. Barger, Jr. ,  Richard M. Knox ,  Jefery R. Roberts

IPC分类号： H04M3/493 ,  H04M3/51 ,  H04M11/08 ,  H04M11/00

CPC分类号： H04M11/08 ,  H04M3/493 ,  H04M3/51

摘要： A system is disclosed for marketing merchandise or services by telephone using brief prerecorded audio demonstrations stored in an audio program repeater and connected to a customer's telephone line by a switching system under control of a data processor in response to a code entered by a customer service operator via the switching system or a code entered directly by the customer through his push-button telephone. In the latter case the data processor is in direct communication with the customer who uses the telephone push buttons to respond to prerecorded messages transmitted from the audio program repeater under control of the data processor. Otherwise the customer communicates with a customer service operator through the switching system and the customer service operator in turn selects the demonstration through the data processor. Having heard the demonstration, the customer indicates whether or not he wishes to purchase the merchandise or services, either to the customer sevice operator, who enters the purchase order in the data processor, or directly to the processor by telephone push-button operation. The data processor then transfers the order to an order processing system and updates both inventory records and the customer's history record.

摘要翻译： 公开了一种用于通过电话来营销商品或服务的系统，其使用存储在音频节目中继器中的简单的预先记录的音频演示，并且响应于由客户服务运营商输入的代码，由数据处理器控制的交换系统连接到客户的电话线 通过切换系统或客户通过其按钮电话直接输入的代码。 在后一种情况下，数据处理器与使用电话按钮的客户直接通信，以响应在数据处理器的控制下从音频节目中继器发送的预先记录的消息。 否则，客户通过交换系统与客户服务运营商进行通信，客户服务运营商又通过数据处理器选择演示。 在听到演示之后，客户表示他是否希望将商品或服务购买给在数据处理器中进入采购订单的客户服务运营商，或通过电话按钮操作直接到处理器。 然后，数据处理器将订单传送到订单处理系统，并更新库存记录和客户的历史记录。

公开(公告)号：US06525750B1

公开(公告)日：2003-02-25

申请号：US08615019

申请日：1996-03-08

申请人： Richard M. Knox

发明人： Richard M. Knox

IPC分类号： G06F116

CPC分类号： G06F1/1679 ,  G06F1/1616 ,  G06F1/1626 ,  G06F1/1639 ,  Y10S345/905

摘要： A display system for a computer includes an image projector located in the computer and oriented to project a computer-generated image from the computer. Alternatively, the display system includes a screen and an image projector attached to the screen, where the screen is capable of receiving a computer-generated image projected by the image projector. Alternatively, the display system includes an image projector and a screen that is attached to the computer and that is capable of displaying an image projected by the image projector.

摘要翻译： 一种用于计算机的显示系统包括位于计算机中并定向成从计算机投影计算机生成的图像的图像投影仪。 或者，显示系统包括屏幕和附接到屏幕的图像投影仪，其中屏幕能够接收由图像投影仪投影的计算机生成的图像。 或者，显示系统包括图像投影仪和附接到计算机并且能够显示由图像投影仪投射的图像的屏幕。

公开(公告)号：US06490017B1

公开(公告)日：2002-12-03

申请号：US09238713

申请日：1999-01-28

申请人： Austin L. Huang ,  Richard M. Knox

发明人： Austin L. Huang ,  Richard M. Knox

IPC分类号： G02F11335

CPC分类号： G02B27/145 ,  G02B27/286 ,  G02F1/13473

摘要： An electro-optic shutter is provided that includes first and second liquid crystal devices located along an optical path and first and second color-selective layers located between the first and second liquid crystal devices. Each liquid crystal device is adapted to rotate the polarization of incident light to a substantially orthogonal polarization in response to being in a first state, and to not substantially change the polarization of incident light in response to being in a second state. The first color-selective layer is adapted to transmit first and second colors and a first polarization of a third color. The second color-selective layer is adapted to transmit the first and the third colors and a second polarization of the second color that is substantially orthogonal to the first polarization. An electro-optic shutter is also provided that includes a color-selective layer, a liquid crystal device to receive light from the color-selective layer and a polarizer to receive light from the liquid crystal layer. The color-selective layer is adapted to transmit a first color, a first polarization of a second color, and a substantially orthogonal polarization of a third color. The liquid crystal device is adapted to rotate the polarization of light to a substantially orthogonal polarization when in a first state and to not substantially rotate the polarization of light when in a second state. The electro-optic shutter can be employed in projection systems.

摘要翻译： 提供一种电光快门，其包括沿着光路定位的第一和第二液晶装置以及位于第一和第二液晶装置之间的第一和第二颜色选择层。 每个液晶装置适于响应于处于第一状态而将入射光的偏振旋转到基本上正交的偏振，并且响应于处于第二状态而基本上不改变入射光的偏振。 第一颜色选择层适于透射第一和第二颜色和第三颜色的第一偏振。 第二颜色选择层适于透射第一颜色和第三颜色以及基本上正交于第一偏振的第二颜色的第二偏振。 还提供一种电光快门，其包括颜色选择层，用于接收来自颜色选择层的光的液晶装置和用于接收来自液晶层的光的偏振器。 颜色选择层适于透射第一颜色，第二颜色的第一偏振和第三颜色的基本正交的偏振。 液晶装置适于在处于第一状态时将光的偏振旋转为基本上正交的偏振，并且在处于第二状态时基本不旋转光的偏振。 电光闸可用于投影系统。

公开(公告)号：US06339454B1

公开(公告)日：2002-01-15

申请号：US09715057

申请日：2000-11-20

申请人： Richard M. Knox

发明人： Richard M. Knox

IPC分类号： H04N574

CPC分类号： G02B27/283 ,  G03B21/10 ,  G03B21/606 ,  G06F1/1601 ,  G09F2013/0422 ,  G09F2013/145 ,  H04N5/7408 ,  H04N9/3141 ,  H04N9/3147

摘要： An “extra-folded” projection display system includes a selectively reflective material (e.g., a linear reflecting polarizer) placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The linear reflecting polarizer reflects the light in the image beam away from the screen. The reflected image beam then encounters a ¼-wavelength achromatic retarder which converts the linear polarization to circular polarization. The image beam next hits a mirror that reflects the light back through the ¼-wavelength achromatic retarder, which converts the circular polarization back to linear polarization, with the polarization director rotated 90° from the original polarization director. The linear reflecting polarizer then allows the light to pass through to the image screen.

摘要翻译： “折叠式”投影显示系统包括紧靠系统成像屏幕后方的选择性反射材料（例如，线性反射偏振器）。 显示系统包括将包含预定线性偏振光的图像束投影到成像屏幕的图像投影仪。 线性反射偏振器将图像束中的光反射离开屏幕。 反射的图像束然后遇到将线偏振转换为圆偏振的1/4波长消色差延迟器。 图像光束接下来将通过1/4波长消色差延迟器反射光的反射镜，其将圆偏振转换回线性偏振，偏振光导向器与原始偏振光导向器旋转90°。 线性反射偏振器然后允许光通过到图像屏幕。

公开(公告)号：US06243152B1

公开(公告)日：2001-06-05

申请号：US08773794

申请日：1996-12-17

申请人： Richard M. Knox ,  Mehdi Zeinali

发明人： Richard M. Knox ,  Mehdi Zeinali

IPC分类号： G02F11333

CPC分类号： H04N9/3167 ,  G02F1/1334 ,  H04N5/7441

摘要： A polymer dispersed liquid crystal projection display is provided that has enhanced contrast. In the projection system using a polymer dispersed liquid crystal display (PDLC), polarized light is used as the light source onto the PDLC. The reflected light maintains its polarization, while the scattered light from the off pixels of the PDLC randomize the polarization. The polarized image is then passed through a polarizing filter which eliminates half of the scattered light, whereas practically all of the polarized image is passed onto the display source. In this way, the contrast between the on and off pixels is effectively doubled.

摘要翻译： 提供了具有增强的对比度的聚合物分散液晶投影显示器。 在使用聚合物分散液晶显示器（PDLC）的投影系统中，使用偏振光作为PDLC上的光源。 反射光保持其极化，而来自PDLC的离开像素的散射光随机化偏振。 然后，偏振图像通过偏振滤光器，其消除了一半的散射光，而实际上所有的偏振图像都被传递到显示源上。 以这种方式，打开和关闭像素之间的对比度有效地加倍。

公开(公告)号：USH1876H

公开(公告)日：2000-10-03

申请号：US175126

申请日：1998-10-19

申请人： Richard M. Knox ,  Dale S. Walker ,  William Burton Mercer

发明人： Richard M. Knox ,  Dale S. Walker ,  William Burton Mercer

IPC分类号： H01J61/52 ,  H01J17/16

CPC分类号： H01J61/52 ,  H01J65/044

摘要： Light sources include an electrodeless bulb having an interior, a fill contained within the interior of the bulb, an excitation structure that transmits electromagnetic energy to the fill in the bulb, and cooling fins extending radically outward from the bulb. The fill is excited by the electromagnetic energy to a plasma state that causes light emission and generates heat energy. The cooling fins, when rotated, draw air toward the bulb to cool the bulb. Alternatively, cooling may be provided by a rotatable squirrel cage about an electrodeless bulb. The light sources can be used in display systems, such as field sequential color systems.

摘要翻译： 光源包括具有内部的无电极灯泡，容纳在灯泡内部的填充物，将电磁能传递到灯泡中的填充物的激发结构以及从灯泡向外延伸的散热片。 填充物被电磁能激发到导致发光并产生热能的等离子体状态。 冷却片旋转时，将空气朝向灯泡抽出，以冷却灯泡。 或者，可以通过围绕无电极灯泡的可旋转鼠笼来提供冷却。 光源可用于显示系统，例如现场顺序色系。