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Optical films of differing refractive indices

A refractive index, optical film technology, applied in optics, optical components, nonlinear optics, etc., can solve the problems of weak light efficiency, limited axial gain, inflexible angle light distribution control, etc.

Inactive Publication Date: 2008-03-05
ROHM & HAAS DENMARK FINANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These disadvantages include poor optical efficiency, limited axial gain, and inflexible control of angular light distribution, to mention just a few

Method used

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  • Optical films of differing refractive indices
  • Optical films of differing refractive indices
  • Optical films of differing refractive indices

Examples

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Embodiment Construction

[0045] In the following detailed description, for the sake of explanation and not limitation, example implementations revealing specific details are set forth. However, for those skilled in the art who benefit from the present invention, it is obvious that other embodiments can be implemented without departing from the specific details disclosed herein. These embodiments are in the attached scope. In addition, descriptions about well-known devices and methods may be omitted so as not to unclearly express the description about the present invention. These methods and devices are clearly in the thinking of the inventor in realizing the exemplary embodiments.

[0046] Briefly, the example embodiments described herein relate to light management films having at least two layers. The first film has a first refractive index, the second film has a second refractive index, and the first and second refractive indexes are different. That is, in some example embodiments, the first refractive ...

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Abstract

An optical layer (101) includes a first optical film (107) having a first index of refraction (nl) and a second optical film (108) having a second index of refraction (n2). The first index of refraction and the second index of refraction are not the same, and a plurality of optical features (109) is disposed over each of the optical films. A light management film is also disclosed.

Description

Background technique [0001] Light valves are implemented in many display technologies. For example, microdisplay panels are becoming more and more popular in many applications, such as televisions, computer monitors, point-of-sale displays, personal digital assistants, and electronic theaters. Only some applications are mentioned. [0002] Many light valves are based on liquid crystal (LC) technology. Some LC technologies start with the light transmitting through the LC device (plate), while other LC technologies start with the light traversing the panel twice, that is, being reflected at the remote surface of the panel. [0003] An external field or voltage is used to selectively rotate the axis of the liquid crystal molecules. As we all know, by applying voltage on both sides of the LC panel, the direction of the LC molecules can be controlled and the polarization state of the transmitted light can be selectively changed. In this way, through the selective switching of the trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B5/04G02F1/1335
CPCG02F1/133606G02F2001/133607G02B5/045G02F2001/133507G02F1/133507G02F1/133607G02B5/02G02B5/04G02F1/1335
Inventor R·J·休多尔
Owner ROHM & HAAS DENMARK FINANCE
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