Eastman-kodak Company

Skc Haas Display Films Co., Ltd.

Industrial Technology Research Institute

Moxtek, Inc.

Rohm and Haas Denmark Finance A/s

Nitto-denko Corporation

Sony Corporation

Xiang-Dong Mi

Andrew Frederick Kurtz

David D Kessler

Stanley W Stephenson

Tomohiro Ishikawa

Barry David Silverstein

David M Johnson

Rongguang Liang

Jehuda Greener

Sujatha Ramanujan

Janet Donner

Charles Chester Anderson

Lee William Tutt

Thomas M Laney

Carl Frederick Leidig

Junwon Lee

Laura A Weller-Brophy

Xinyu Zhu

Robert P Bourdelais

Joshua Monroe Cobb

Janglin Chen

Charles M Rankin

Richard Dominic Bomba

Gary E Nothhard

Robert L Walton

Stephen C Meissner

John M Palmeri

Herong Lei

Steven J Neerbasch

Joshua M Silbermann

Louis P Harasta, Jr

Ju-Hyun Lee

Michael L Ferranti

Jorge I Rangel

The present invention provides a light guide plate comprising an input surface for receiving light from a light source, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising a plurality of micro-lenses. The light guide plate further comprises micro-lens having a width w, a length l, a depth d, an orientation angle, a first base angle &#x3b1;, a second base angle &#x3b1;, a first entry angle &#x3b2;, and a second entry angle &#x3b2;such that when depth change &#x394;d is 0.1 &#x3bc;m, area change ratio, defined as is less than or equal to 0.95% and the beginning number density of the micro-lenses is greater than or equal to 8 per mm, &#x394;w being width change and &#x394;l being length change corresponding to depth change &#x394;d.

Light guide films having reduced banding levels

The present invention provides a light guide plate having reduced hot spots comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, a bottom surface opposing to the output surface, and an end surface opposing to the input surface.

Light guide plate having a reversed micro-pattern in its mixing zone

The present invention provides a light guide plate comprising a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface. At least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising micro-lenses distributed in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction.

Light guide plate having a pseudo two-dimensional pattern

The present invention provides a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern consisting of a plurality of substantially identical micro-lenses, each micro-lens having a width, a length, and an orientation angle. The light guide plate further provides an area density D(x, y) of the micro-lenses varies in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction for y between starting line yand ending line, the area density D(x, y=y) at the starting line yvarying between a minimal value Dmin and a maximum value Dmax such that Dmin&#x2267;1% and 100&#x2267;Dmax/Dmin&#x2267;2, and wherein the area density D(x,y) repeats in pitch P in the x-axis such that D(x,y)=D(x+P,y).

Light guide plates having a two-dimensional pattern comprising substantially identical micro-lenses

A watermark formed of a bistable material, and a method of forming the watermark, are described.

Method of forming a bistable watermark

Bistable watermark

A bistable display having one or more permanent hideable mark, and a method of forming the permanent hideable mark, are described. The permanent hideable mark can be hidden and revealed numerous times without loss of information.

Bistable display

The present invention provides a light redirecting article for redirecting light toward a target angle, the light redirecting article comprising: an input surface comprising a plurality of light redirecting structures each light redirecting structure having a near surface having two slopes, sloping away from normal in one direction as defined by a first inclination base angle &#x3b2;, a second inclination angle &#x3b2;, and a first half apex angle &#x3b1;, for accepting incident illumination over a range of incident angles and a far surface sloping away from normal, in the opposite direction relative to the input surface, as defined by a second base angle &#x3b3;and a second half apex angle &#x3b1;. The invention further provides an output surface opposing to the input surface wherein the near and far surfaces are opposed to each other at an angle (&#x3b1;+&#x3b1;) that is in the range from 60 to 70 degrees, and the base angle &#x3b2;is in the range from 82 to 87 degrees.

Turning film having multiple slopes

The present invention provides a diffusely-reflecting polarizer comprising:

Diffusely-reflecting polarizer having nearly isotropic continuous phase

A light redirecting article redirects light toward a target angle. The light redirecting article is made from a material having a refractive index greater than 1.6. The light redirecting article has an input surface for accepting incident illumination over a range of incident angles and an output surface with a plurality of light redirecting structures, each light redirecting structure having a near surface and an exit surface for emitting an output light at an emitted light angle, wherein the exit surface is at an oblique angle relative to the plane of the input surface. For incident illumination at either of at least two different principal angles, each principal angle being greater than 60 degrees from normal and the principal angles having a difference of 5 degrees or greater, the emitted light angle is within 5 degrees of the target angle.

Polarizing turning film

Backlight containing formed birefringence reflective polarizer

A camera apparatus () has a zoom lens () having a zoom focus setting that is adjustable over a range of focus values and control circuitry for generating a variable voltage potential according to the zoom focus setting. A flash illumination apparatus () has a light source () and a variable focus liquid crystal lens (), the variable focus liquid crystal lens () having a first and a second solid optical element (), chamber (), the two electrodes () and liquid crystal material (). A variable voltage is applied to the liquid crystal material () for the lens power according to the zoom focus setting.

Zoom flash with liquid crystal lens

The present invention provides a diffusely-reflecting polarizer having

A display system includes a display arranged to receive an image wise pattern of light to form an image, including, a pair of conductors, at least one conductor being transparent, a layer of cholesteric liquid crystal material disposed between the conductors, the liquid crystal material having multiple stable optical states at zero electrical field, and a light absorber for forming an image wise thermal pattern in the liquid crystal sufficient to change the optical state of the cholesteric liquid crystal in response to an image wise pattern of light; a display writer, including, a light source for producing a flash of light of sufficient intensity to generate sufficient heat in the light absorber to change the optical state of the cholesteric liquid crystal, a mask located between the light source and the display for defining the image wise pattern of light, a display drive connectable to the conductors for generating an electric field between the conductors for changing the optical state of the cholesteric liquid crystal, and a controller connected to the light source and the display drive for controlling the intensity of the electrical field and actuating the light source to create an image on the display.

Cholesteric liquid crystal display system

Growing community of inventors

Rochester, NY, United States of America

Xiang-Dong Mi