Unlock instant, AI-driven research and patent intelligence for your innovation.

Shaped article for use as an optical component and method of producing the shaped article

a technology of optical components and shaped articles, applied in the field of shaped articles, can solve the problems of low array accuracy and unsuitability for optical applications

Inactive Publication Date: 2006-11-23
MITSUBISHI RAYON CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] When the parallel rays are directed onto the photopolymerizable composition in accordance with this method, a periodic change in refractive index is produced in the photopolymerizable composition and, as a result, the photopolymerizable composition is polymerized into a shaped article for use as an optical component composed of a matrix and numerous columnar structure bodies arrayed in one direction within the matrix. An optical sheet, optical film or other such shaped article for use as an optical component that is capable of high-level optical control can therefore be obtained without need for complicated steps.

Problems solved by technology

No. 2 has micro-order regularity, the array accuracy is low and is therefore not suitable for use in optical applications requiring high-level optical control.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shaped article for use as an optical component and method of producing the shaped article
  • Shaped article for use as an optical component and method of producing the shaped article
  • Shaped article for use as an optical component and method of producing the shaped article

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] The photopolymerizable composition used was prepared by mixing 50 parts by mass of methymethacylate having a refractive index of 1.489 as an independent polymer and 50 parts by mass of trimethylolpropane triacrylate having a refractive index of 1.535 as an independent polymer and dissolving in the mixture 1 part by mass of 1-hydroxy cyclohexylphenyl ketone as photopolymerization initiator.

[0082] The obtained photopolymerizable composition was sealed film-like in a glass cell that resembled the one shown in FIG. 11 and measured 50 mm×50 mm and 0.1 mm in thickness. Next, an ultraviolet beam having a beam spread angle of not greater than ±0.001 rad and an illumination distribution in its optical intensity distribution in the plane perpendicular to the direction of light travel of not greater than 2.0% was directed perpendicularly onto the surface of the upper cover 15, thereby polymerization-curing the photopolymerizable composition to produce a plastic film.

[0083] The light s...

example 2

[0085] The photopolymerizable composition used was prepared by dissolving 1 part by mass of 2-benzyl-2-dimethylamino-1-(4-morpho-lenophenyl) butanone in 100 parts by mass of pentaerythritol tetraacrylate having a refractive index of 1.537 as an independent polymer.

[0086] An ultraviolet beam having a beam spread angle of ±0.001 rad and an illumination distribution in its optical intensity distribution in the plane perpendicular to the direction of light travel of not greater than 2.0% was directed onto the photopolymerizable composition, thereby polymerization-curing it into a plastic film.

[0087] The light source used was a parallel ray ultraviolet irradiator equipped with an ultra-high pressure mercury lamp having an emission spectrum like that shown in FIG. 13. An ultraviolet beam of 100 nm full width at half maximum and 250 to 400 nm wavelength was obtained for use by means of an ultraviolet pass filter.

[0088] The diffraction pattern of the obtained plastic film was evaluated i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

An optical component and a method of producing the same, which optical component is obtained by photopolymerizing a photopolymerizable composition so as to comprise a matrix and numerous columnar structure bodies oriented in one direction within the matrix, wherein the columnar structure bodies differ in refractive index from the matrix and are arrayed in a lattice in the plane perpendicular to said orientation direction to have a highly arrayed structure whose refractive index periodically changes on the order of 80 nm to 1,000 micrometer. The optical component according to the invention is imparted with a structure whose refractive index periodically changes with high regularity on the order of about 80 nm to 1,000 micrometer and, owing to this property, is usable in optical sheet, optical film and other ordinary optical applications.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to a shaped article for use as an optical component and a method of producing the shaped article, particularly to a shaped article for use as an optical component such as an optical sheet or optical film having diffraction, polarization, diffusion or other optical property, and a method of producing the shaped article. [0002] An example of the shaped article for use as an optical component of the invention is the optical low-pass filter for suppressing the occurrence of moiré fringes in an image pickup device used in a CCD detector. DESCRIPTION OF THE PRIOR ART [0003] Components made of plastic film or sheet in which portions of different optical property are arrayed to have one- or two-dimensional regularity are being studied for use as optical control panels and other optical components. [0004] For instance, an arrayed configuration imparting two-dimensional regularity has been described in Macromolecules, which gives an ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29D7/01B29D11/00C08F2/00C08F2/46C08J5/00G02B5/00G02B5/18
CPCG02B5/1857G02B27/46G02B5/1871Y10T428/249921C08F2/46C08J5/00G02B5/00
Inventor HATTORI, TOSHIAKIUOZU, YOSHIHIRO
Owner MITSUBISHI RAYON CO LTD