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Optical film

A nanostructure and nanotechnology, applied in the field of optical films, can solve problems such as reducing image quality

Inactive Publication Date: 2010-06-02
MICROSHARP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reflection of ambient light from the display surface creates scattered surface reflections or glints that degrade image quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A suitable ridge profile is formed by UV interference patterning in the photoresist. This structure is then replicated into a nickel electrochemical forming mold by hand-casting a UV curable resin film, and then this forming mold is used to prepare the nanostructure according to the present invention, and a collimated white light source, a precision keratin holder, a calibrated precision photodetector reflector and integrating sphere to measure reflectivity.

[0050] result:

[0051] The reflectance properties of the modulated nanoridge structures were measured with the nanoridges oriented parallel to the direction of the incident light and compared to:

[0052] 1. A flat structure provided on the same base film and formed of the same resin. This resin is Rad-Kote X-6JA-68-A, a lacquer marketed by Rad-Cure Corporation, 9 Audrey Place, Fairfield, New Jersey 07004. This paint has been formulated to cure by visible light and has a viscosity of 500 cP.

[0053] 2. The...

Embodiment 2

[0059] The modulated nanostructured film prepared in Example 1 was surface treated by plasma-assisted chemical vapor deposition with a few nanometer coating of highly hydrophobic fluorinated hydrocarbons to provide a hydrophobic coating.

[0060] Contact angle measurements were performed and compared with the results obtained with the corresponding flat structures. A PG-X "miniature" goniometer from Fibro System AG (Sweden) and its accompanying software was used. The system deposits liquid droplets, here deionized water droplets, on the membrane surface and uses an imaging system to measure the curvature of the droplets. The system is calibrated using a sphere of known curvature.

[0061] result:

[0062] The results of coatings according to the invention modulating nanostructures compared to flat surfaces provided with the same coatings are shown in Table 1:

[0063] Table 1 - Contact Angle Measurements

[0064] drop

[0065] Contact angle measurements on nano...

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Abstract

The present invention provides a nanostructure comprising a plurality of nanoridges wherein the height of each nanoridge is modulated whereby to form one or more peaks (e.g. a series of peaks) along the length of each nanoridge.

Description

technical field [0001] The present invention relates to nanostructures with anti-reflection properties and their application in optical films. More specifically, the present invention relates to such structures having both anti-reflection and self-cleaning properties and their use in light-harvesting devices such as solar cell modules and solar concentrators. Background technique [0002] Reflection of light from surfaces reduces the efficiency of devices used for light collection, for example for generating or generating heat, or for hydrogen production, or for capturing light for transport purposes, such as for use along light guides Transmitters transmit light to illuminate building interiors or simply illuminate dark interiors where there is little natural incident light. [0003] Solar concentrators are optional systems that focus light from a relatively wide area of ​​direct sunlight into a smaller area where energy conversion devices (e.g. photovoltaic cells) are loc...

Claims

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Application Information

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IPC IPC(8): G02B5/18G02B1/11
CPCG02B5/1809Y02E10/52G02B1/118G02B2207/101B82Y20/00Y10T428/24479Y10T428/2457Y10T428/24612
Inventor 尼古拉斯·西蒙·沃克
Owner MICROSHARP CORP LTD
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