公开(公告)号：US5929956A

公开(公告)日：1999-07-27

申请号：US976709

申请日：1997-11-24

Applicant: Jacobus H. M. Neijzen ,  Hugo J. Cornelissen

Inventor： Jacobus H. M. Neijzen ,  Hugo J. Cornelissen

IPC: G02F1/1333 ,  G02F1/1334 ,  G02F1/1335

CPC classification number: G02F1/133553 ,  G02F1/1334 ,  G02F2201/343

Abstract: The invention relates to a reflective flat-panel display device (1) comprising a display panel (3) which is suitable for modulating an illumination beam with image information. The display panel (3) comprises a diffusing liquid crystalline material (5) and a first and a second substrate (7, 9) enclosing the liquid crystalline material (5) and reflecting means which reflect light incident at an angle which is larger than a given angle of incidence .theta..sub.c. The device further includes an absorbing element (10) which absorbs light passed by the reflecting means.

Abstract translation: 本发明涉及一种反射式平板显示装置（1），其包括适于用图像信息调制照明光束的显示面板（3）。 显示面板（3）包括扩散液晶材料（5）和包围液晶材料（5）的第一和第二衬底（7,9）和反射以大于 给定的入射角θc。 该装置还包括吸收由反射装置通过的光的吸收元件（10）。

公开(公告)号：US5751385A

公开(公告)日：1998-05-12

申请号：US255031

申请日：1994-06-07

Applicant: William C. Heinze

Inventor： William C. Heinze

IPC: G02F1/1335 ,  G02F1/1347 ,  G09F9/35

CPC classification number: G02F1/13473 ,  G02F1/133533 ,  G02F2201/343 ,  G02F2203/34

Abstract: A subtractive color liquid crystal display employing circular polarizers. In the subtractive color display each picture element has three liquid crystal switching elements. Adjacent to each liquid crystal switching element are a circular polarizer and 1/4 wave retarder plate combination. The circular polarizer and 1/4 wave retarder plate combination create a linear notch polarizer for an isolated and steep polarization band for each of the primary colors (red, green blue). The notch polarizes are tuned to the particular backlight of the display in order to provide increased light transmittance and color gamut.

Abstract translation: 采用圆偏振器的减色液晶显示器。 在减色显示中，每个像素具有三个液晶开关元件。 与每个液晶开关元件相邻的是圆偏振器和+ E，fra 1/4 + EE波形延迟板组合。 圆偏振器和+ E，fra 1/4 + EE波形延迟板组合为每种原色（红色，绿色蓝色）创建了一个线性陷波偏振器，用于隔离和陡峭的极化带。 陷波偏振调谐到显示器的特定背光，以提供增加的透光率和色域。

公开(公告)号：US5627666A

公开(公告)日：1997-05-06

申请号：US282660

申请日：1994-07-27

Applicant: Gary D. Sharp ,  Jay E. Stockley ,  Kristina M. Johnson

Inventor： Gary D. Sharp ,  Jay E. Stockley ,  Kristina M. Johnson

IPC: G02B5/30 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/141 ,  G02F1/1335

CPC classification number: G02F1/1418 ,  G02B5/3016 ,  G02F1/13473 ,  G02F1/141 ,  G02F2201/343

Abstract: This invention provides a phase modulator comprising an electro-optically rotatable smectic liquid crystal half-wave retarder in combination with a cholesteric liquid crystal circular polarizer. Rotation of the half-wave retarder varies the phase delay of the modulator. A polarizing interferometer is provided utilizing the phase modulator of this invention in combination with a second cholesteric circular polarizer and a linear polarizer. A tunable Fabry-Perot resonator which does not require ordinary mirrors is provided utilizing the phase modulator of this invention in combination with a second cholesteric circular polarizer.

Abstract translation: 本发明提供了一种相位调制器，其包括与胆甾型液晶圆偏振器组合的电光可旋转的近晶液晶半波延迟器。 半波延迟器的旋转会改变调制器的相位延迟。 使用本发明的相位调制器与第二胆甾型圆偏振器和线性偏振器组合来提供偏振干涉仪。 利用本发明的相位调制器与第二胆甾型圆偏振器组合，提供了不需要普通反射镜的可调法布里 - 珀罗谐振器。

公开(公告)号：US5619355A

公开(公告)日：1997-04-08

申请号：US131725

申请日：1993-10-05

Applicant: Gary D. Sharp ,  Kristina M. Johnson

Inventor： Gary D. Sharp ,  Kristina M. Johnson

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/141

CPC classification number: G02F1/13473 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/139 ,  G02F1/141 ,  G02F2201/343 ,  G02F2203/055 ,  G02F2203/34

Abstract: This invention provides a liquid crystal polarization handedness switch, and optical devices employing the handedness switch in conjunction with optical elements which are sensitive to the handedness of incident light. The handedness switch receives unpolarized light and converts it into circularly polarized light with switchable handedness. In combination with cholesteric circular polarizers, switchable color filters are provided. The color filters of this invention include the analogous x-y polarization switch combined with colored partial polarizers. The liquid crystals employed in the color filter of this invention can include SmC*, SmA*, antiferroelectric, DHF, achiral ferroelectric and twisted nematic liquid crystals.

Abstract translation: 本发明提供了一种液晶偏振旋转度开关，以及采用螺旋性开关的光学装置，其结合对入射光的旋转性敏感的光学元件。 旋转度开关接收非偏振光，并将其转换成具有可切换手感度的圆偏振光。 结合胆甾型圆偏振器，提供可切换的彩色滤光片。 本发明的滤色器包括与彩色部分偏振器组合的类似的x-y偏光开关。 在本发明的滤色器中使用的液晶可以包括SmC *，SmA *，反铁电，DHF，非手性铁电和扭转向列型液晶。

公开(公告)号：US5325218A

公开(公告)日：1994-06-28

申请号：US999230

申请日：1992-12-31

Applicant: Stephen J. Willett ,  Gary L. Tritle

Inventor： Stephen J. Willett ,  Gary L. Tritle

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/1347 ,  G02F1/133 ,  G03B21/00

CPC classification number: G02F1/13473 ,  G02F1/133536 ,  G02F1/133621 ,  G02F2001/133543 ,  G02F2201/343 ,  Y10S353/03 ,  Y10S353/05

Abstract: A liquid crystal display (LCD) panel employs a cholesteric polarizer which passes light of a first circular polarization, but reflects light of a second circular polarization. The LCD panel may be monochrome or color; in the color embodiments, several different color filters are used, each having one or more cholesteric polarizers tuned to a specific bandwidth in the visible spectrum. These polarizers replace dyed (neutral or dichroic) polarizers of prior art LCD panels, and provide improved color purity. The invention may be enhanced by providing a light recycling scheme whereby the handedness of the circularly polarized light reflected by the polarizers is changed and redirected back to the polarizers. This recycling scheme may also be adapted to provide an overhead projector having a high output polarized light source, particularly useful in conjunction with an LCD panel.

Abstract translation: 液晶显示器（LCD）面板采用通过第一圆偏振光，但反射第二圆偏振光的胆甾型偏振器。 LCD面板可能是单色或彩色; 在颜色实施例中，使用几种不同的滤色器，每种滤色器具有调谐到可见光谱中的特定带宽的一个或多个胆甾型偏振器。 这些偏振器代替现有技术的LCD面板的染色（中性色或二向色）偏振片，并提供改善的色纯度。 本发明可以通过提供一种光循环方案来增强，由此偏振器反射的圆偏振光的旋转性被改变并被重定向回到偏振器。 该回收方案还可以适于提供具有高输出偏振光源的高架投影仪，其特别适用于LCD面板。

公开(公告)号：US4987410A

公开(公告)日：1991-01-22

申请号：US455896

申请日：1989-12-18

Applicant: Arthur L. Berman ,  Thomas M. Lewis

Inventor： Arthur L. Berman ,  Thomas M. Lewis

IPC: G02B5/30 ,  G02B27/00 ,  G02B27/01 ,  G02F1/1335 ,  G02F1/1347 ,  G09B9/32 ,  G09G3/00

CPC classification number: G09G3/002 ,  G02B27/01 ,  G02B5/3016 ,  G02F1/133528 ,  G02F1/13471 ,  G09B9/326 ,  G02B2027/0118 ,  G02B2027/0165 ,  G02B5/30 ,  G02F2201/343

Abstract: A head-up display (HUD)/head-down display (HDD) system capable of projecting multi-color images employs cholesteric liquid crystal elements, two-state liquid crystal devices, an image source, a beam splitter, and a combiner to, in sequence, generate HUD and HDD images. An LCD and cholesteric liquid crystal element operate together to selectively transmit or block portions of an image incident thereon. The switching frequency of the LCD-cholesteric liquid crystal element is above the flicker-fusion frequency, such that both the HUD and HDD displays appear to the observer to be simultaneously and continuously operating.

Abstract translation: 能够投影多色图像的平视显示（HUD）/俯视显示（HDD）系统使用胆甾型液晶元件，双态液晶装置，图像源，分束器和组合器， 依次生成HUD和HDD图像。 LCD和胆甾型液晶元件一起工作以选择性地传输或阻挡入射在其上的图像的部分。 LCD胆甾型液晶元件的开关频率高于闪烁融合频率，使得HUD和HDD显示器对观察者看起来是同时且连续的操作。

公开(公告)号：US3942872A

公开(公告)日：1976-03-09

申请号：US465047

申请日：1974-04-29

Applicant: Franklin D. Saeva

Inventor： Franklin D. Saeva

IPC: G02F1/137 ,  G02F1/13

CPC classification number: G02F1/137 ,  G02F2201/343 ,  Y10S359/90

Abstract: The optical transitions of extrinsically optically active insoluble materials become optically active and circularly dichroic when in contact with optically negative liquid crystalline materials thereby providing unusual and highly advantageous properties. The circularly dichroic optical properties induced in the extrinsically optically active insoluble materials can be utilized for optical display applications.

Abstract translation: 当与光学阴性液晶材料接触时，非旋光不溶性材料的光学转变变得光学活性且呈圆形二色性，从而提供不寻常的和非常有利的性质。 在光学活性不溶物质中诱发的圆二色性光学性质可用于光学显示应用。

公开(公告)号：US3836230A

公开(公告)日：1974-09-17

申请号：US37419973

申请日：1973-06-27

Applicant: XEROX CORP

Inventor： ADAMS J ,  BECKER J ,  HAAS W

IPC: G09G3/18 ,  G02F1/00 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1347 ,  G09F9/35 ,  G09F9/46 ,  G02F1/16

CPC classification number: G02F1/0063 ,  G02F1/13473 ,  G02F2201/343

Abstract: A liquid crystal color display system which utilizes a plurality of films or layers of optically negative liquid crystalline materials as passive light discriminating screens is disclosed. The display system may be operated in a two color mode or a three color mode and has the capability of producing various color hues. The system lends itself to operation at very high frequency.

Abstract translation: 公开了一种利用光学负极液晶材料的多个膜或层作为被动光鉴别屏的液晶彩色显示系统。 显示系统可以以双色模式或三色模式操作，并且具有产生各种色调的能力。 该系统适用于非常高的频率运行。

公开(公告)号：US12055802B2

公开(公告)日：2024-08-06

申请号：US17226479

申请日：2021-04-09

Applicant: FUJIFILM Corporation

Inventor： Hiroshi Sato ,  Yukito Saitoh ,  Katsumi Sasata

IPC: G02F1/11 ,  G02F1/1335

CPC classification number: G02F1/116 ,  G02F1/133541 ,  G02F1/133543 ,  G02F2201/343

Abstract: Provided are an optical laminate in which a large diffraction angle can be obtained, a light guide element, and an AR display device. The optical laminate includes, in the following order: a first optically-anisotropic layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound continuously rotates in at least one in-plane direction; a phase difference layer; and a patterned cholesteric liquid crystal layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound continuously rotates in at least one in-plane direction, the liquid crystal compound being cholesterically aligned, in which in the first optically-anisotropic layer and the patterned cholesteric liquid crystal layer, the one in-plane directions in which the direction of the optical axis derived from the liquid crystal compound continuously rotates are the same, and rotation directions of the direction of the optical axis derived from the liquid crystal compound in the one in-plane direction are the same.

公开(公告)号：US20240077664A1

公开(公告)日：2024-03-07

申请号：US18493881

申请日：2023-10-25

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Katsumi SASATA ,  Yukito SAITOH

IPC: G02B5/30 ,  G01S7/481 ,  G02B5/28 ,  G02F1/1335

CPC classification number: G02B5/3016 ,  G01S7/481 ,  G02B5/283 ,  G02B5/305 ,  G02F1/133543 ,  G02F2201/343

Abstract: Provided is a sensor having a high SN ratio. The sensor includes a light source, a band pass filter, and a light-receiving element, in which the band pass filter includes two cholesteric liquid crystal layers and a discontinuous layer disposed between the two cholesteric liquid crystal layers, in the two cholesteric liquid crystal layers, helical twisted directions and helical pitches are the same, and in a case where the discontinuous layer is a layer other than a cholesteric liquid crystal layer and a wavelength having a lowest reflectivity in a selective reflection wavelength range of the band pass filter is represented by λm [nm], a thickness [nm] is in a range of “30×(λm/550) to 150×(λm/550)”.