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Optical devices containing birefringent polymer fibers

A birefringence and polymer technology, applied in the direction of optics, cladding optical fiber, optical components, etc., can solve the problems of increasing cost and weight

Inactive Publication Date: 2009-08-12
3M INNOVATIVE PROPERTIES CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This lamination step adds additional cost and weight to the construction

Method used

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  • Optical devices containing birefringent polymer fibers
  • Optical devices containing birefringent polymer fibers
  • Optical devices containing birefringent polymer fibers

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Embodiment Construction

[0020] The present invention is applicable to optical systems, and more specifically to polarizing optical systems.

[0021] As used herein, the terms "specular reflection" and "specular reflectivity" refer to the reflection of light from a subject whose reflection angle is substantially equal to the angle of incidence, where these angles are measured relative to the normal to the surface of the subject. In other words, when light is incident on the main body with a certain angular distribution, the reflected light has substantially the same angular distribution. The term "diffuse reflectance" or "diffuse reflectance" refers to the reflection of light in which the angle of some reflected light is not equal to the angle of incidence. Therefore, when light is incident on the main body with a specific angular distribution, the angular distribution of the reflected light is different from the angular distribution of the incident light. The term "total reflectivity" or "total reflectio...

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Abstract

A display system has a display panel and at least one light source for producing light to illuminate the display panel. A polarizer film may be employed between the display panel and the light source. At least one of the polarizing fibers has multiple internal birefringent interfaces between a first polymer material and a second polymer material. In some embodiments, the polarizer substantially reflects normally incident light in a first polarization state and substantially transmits normally incident light, in a second polarization state orthogonal to the first polarization state, with a haze value of at least 10%.

Description

Technical field [0001] The present invention relates to an optical display system, and more specifically, to an optical display film including a polarizing film. Background technique [0002] Liquid crystal display (LCD) devices are usually equipped with a backlight that is arranged behind a liquid crystal panel for generating illuminating light. Since it is very important for the liquid crystal panel to be irradiated uniformly, a diffuser is often used to diffuse the illuminating light. This is particularly important for the case where the light source (usually an elongated fluorescent lamp extending the entire LCD) is arranged behind the display panel. The diffuser is usually a few millimeters thick and can backscatter most of the incident light back to the lamp. The reflector arranged behind the lamp is used to change the direction of the backscattered light so that it is directed toward the display panel. Therefore, a "cavity" is formed between the diffuser plate and the refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B2006/1213G02F1/133536G02B5/3008G02B6/03688G02F1/133524G02B6/0238G02B6/105G02B6/02376G02B6/023G02B5/30G02F1/1335
Inventor 格雷戈里·L·布吕姆台会文帕特里克·R·弗莱明丹尼尔·J·齐利希琼·M·弗兰克尔罗伯特·L·布劳特威廉·J·科佩基尚德恩·D·哈特克里斯廷·L·通霍斯特
Owner 3M INNOVATIVE PROPERTIES CO
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