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

Light-diffusing film for led lamp

A technology of LED lighting and diffusion film, applied in the direction of lighting devices, lighting and heating equipment, parts of lighting devices, etc., can solve the problems of low efficiency, taking into account concealment and light utilization efficiency, etc., to achieve easy disappearance, light utilization Efficiency reduction suppression, high concealment effect

Inactive Publication Date: 2012-12-19
FUJIFILM CORP
View PDF13 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the concealment is usually improved, the efficiency will be greatly reduced, and it is difficult to achieve a balance between concealment and light utilization efficiency

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
  • Light-diffusing film for led lamp
  • Light-diffusing film for led lamp
  • Light-diffusing film for led lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0143]

[0144] An internal scattering layer coating solution 1 having the following composition was coated on a PET film (refractive index: 1.67) with a thickness of 300 μm using a wire bar, and heated and cured in an oven at 130° C. for 2 minutes.

[0145] (Composition of Internal Scattering Layer Coating Liquid 1)

[0146] ·Distilled water: 80 parts by mass

[0147] Surfactant (Sanyo Chemical Industry Co., Ltd., NAROACTY CL-95): 5 parts by mass

[0148] Particles (manufactured by Nissan Chemical Co., Ltd., OPTBEADS 2000M, silica-coated melamine particles, average particle diameter 2 μm, refractive index 1.65): 201 parts by mass

[0149] ・Ultrafine particle dispersion (manufactured by Nissan Chemical Industries, Ltd., SNOWTEX C, silica particles, average particle diameter 0.01 μm to 0.02 μm, solid content 20%): 333 parts by mass

[0150] ・Water-dispersible polymer (polyurethane resin, manufactured by DMS NeoResins Inc., NeoRez R-600, solid content 33%): 368 parts by mass ...

Embodiment 2

[0162]

[0163] The following internal scattering layer coating solution 2 was coated on a PET film (refractive index: 1.67) with a thickness of 300 μm using a wire bar, and heated and cured in an oven at 130° C. for 2 minutes. The average film thickness of the formed internal scattering layer was 12 μm.

[0164] (Composition of Internal Scattering Layer Coating Liquid 2)

[0165] ·Distilled water: 80 parts by mass

[0166] Surfactant (Sanyo Chemical Industry Co., Ltd., NAROACTY CL-95): 5 parts by mass

[0167] ・Particles (Tospel, manufactured by Momentive Co., Ltd., silicone particles, average particle diameter: 4.5 μm, refractive index: 1.45): 201 parts by mass

[0168] ・Ultrafine particle dispersion (manufactured by Nissan Chemical Industries, Ltd., SNOWTEX C, silica particles, average particle diameter 0.01-0.02 μm, solid content 20%): 333 parts by mass

[0169] ・Water-dispersible polymer (polyurethane resin, manufactured by DMS NeoResins Inc., NeoRez R-600, solid con...

Embodiment 3

[0173]

[0174] The aforementioned internal scattering layer coating solution 1 was coated on a PET film (refractive index: 1.67) with a thickness of 300 μm by a wire bar, and heated and cured in an oven at 130° C. for 2 minutes. The average film thickness of the formed internal scattering layer was 4 μm.

[0175] Furthermore, on the surface of the PET film opposite to the surface on which the internal scattering layer coating liquid was applied, the above-mentioned surface shape layer coating liquid 1 was coated with a wire bar, and heated and cured in an oven at 130° C. for 2 minutes to produce film3. The average film thickness of the surface shape layer was 6 μm.

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
particle sizeaaaaaaaaaa
mean roughnessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Provided is a light diffusion film for LED lighting that achieves a balance between concealment and light-utilization efficiency. The light diffusion film for LED lighting includes a sheet of substrate, an internal scattering layer and a surface shaping layer. The internal scattering layer contains a binder and particles; the mean particle diameter A of the particles is from 0.5 μm to 5.0 μm; the refractive index difference between the particles and the binder is from more than 0 to 0.15; and the content of the particles is from 10 parts by mass to 120 parts by mass with respect to 100 parts by mass of the binder.

Description

technical field [0001] This invention relates to the light-diffusion film for LED lighting which provided rigidity in consideration of concealment and light utilization efficiency. Background technique [0002] In the context of technological development and more efficient energy consumption in recent years, LEDs have begun to enter the lighting field. As a major difference from conventional incandescent lamps and fluorescent lamps in lighting, LED is a point light source. Therefore, when LEDs are used for lighting, a light-diffusing film is required that has high concealment, eliminates lamp images of point light sources, and has high light utilization efficiency (for example, refer to JP-A-2009-32563). However, when the concealment is generally increased, the efficiency will be greatly reduced, and it is difficult to achieve a balance between concealment and light utilization efficiency. [0003] Previously, diffusion films were mainly used for backlighting and anti-refl...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02B32B7/02B32B27/20F21V3/00F21Y101/02
CPCF21K9/00G02B5/0226G02B5/0221F21V11/00G02B5/0278F21K9/68
Inventor 细田英正黑岩果林森裕行长谷川一英
Owner FUJIFILM CORP