Check patentability & draft patents in minutes with Patsnap Eureka AI!

Light-diffusing pattern design method, manufacturing method of light-diffusing plate, and light-diffusing plate

A technology of light diffusion pattern and design method, applied in optics, optical components, lighting and heating equipment, etc., can solve problems such as the decrease of light transmittance, and achieve the effect of excellent quality reproducibility and excellent light diffusion characteristics

Active Publication Date: 2019-03-15
KURARAY CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to have light diffusing properties such that the lamp image cannot be seen in the milky white light diffusing plate, a large amount of light diffusing agent must be added, and in this case, the light transmittance will decrease

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 pattern design method, manufacturing method of light-diffusing plate, and light-diffusing plate
  • Light-diffusing pattern design method, manufacturing method of light-diffusing plate, and light-diffusing plate
  • Light-diffusing pattern design method, manufacturing method of light-diffusing plate, and light-diffusing plate

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0073] Before proceeding to the detailed description of the embodiment, the basic concept of the embodiment will be briefly described.

[0074] In this embodiment, in the process of providing the light diffusion pattern on the light diffusion plate, the unevenness of all the light diffusion patterns is designed so that desired light diffusion characteristics can be expressed, rather than relying on random irregularities formed by chance. Here, in order not to cause interference, it is sufficient to arrange irregularities of different sizes and shapes at random, but the policy of designing random patterns only by using appropriate random numbers generated by a computer cannot be implemented specifically. It should also be unclear whether the desired light diffusion characteristics can be achieved.

[0075] Therefore, after in-depth research, the present inventors have thought of such a method: starting from a small number of (for example, 1, 2 or 3) lenses as a reference, using...

Embodiment 1

[0158] As an example, the light-diffusion pattern was designed so that light-diffusion angle may become 60 degrees, and the light-diffusion plate (KLD60) 300 was manufactured by this. Figure 14 It is the SEM image (Scanning Electron Microscope: scanning electron microscope) of the light-diffusion plate (KLD60) 300.

[0159] For this pattern, according to figure 2 Flowchart for making data. Based on the reference lens 100, similar-shaped lenses were produced with the same probability within the range of similar magnifications from 0.78 times to 2.3 times. In the first disposition process, set such constraints: randomly dispose similar-shaped lenses corresponding to 80% of the pattern area, each lens does not overlap, and adjust the lens disposition by Monte Carlo method. After that, follow figure 2 The flow chart of the figure repeats each process until the porosity becomes 0. It should be understood that the concavity and convexity of the light diffusion pattern are for...

Deformed example 1

[0164]In the first embodiment described above, a case was exemplified in which one lens 410 is left intact and the other lens 420 is cut off at a surface perpendicular to the bottom surface in the process of eliminating overlapping of the lenses.

[0165] It is not limited to this, and of course other methods are also conceivable as a method of eliminating the overlap between lenses. For example like Figure 16 That way the two lenses overlap.

[0166] Set one lens to 510 and the other to 520. When the two are cut at the boundary between the outline lines of the lenses, the overlapping can be eliminated.

[0167] The intersection between the outline lines of the lenses 510 and 520 is the intersection line. The two lenses 510, 520 ( Figure 17 ).

[0168] exist Figure 17 In , the lines of intersection are indicated by bold lines. In addition, the cut surface 230 is indicated by a dashed-two dotted line. Thereby, overlapping of lenses can be eliminated. Furthermore, a ...

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

No PUM Login to View More

Abstract

The present invention provides a light diffusion pattern design method for designing a light diffusion pattern exhibiting a desired light diffusion characteristic with systematic fewer steps. Means: the light diffusion pattern design method includes: a lens data preparation process, preparing lens data with desired light diffusion characteristics; arranging a process, arranging a plurality of the lens data prepared in the lens data preparation process in a predetermined area (200). Lens data (100); cutting process, in the case where lenses (100) overlap each other (210) in the arrangement process, cut off a part of the lens shape (421) in order to eliminate the overlap (210); and re-arrange In the process, the shape of the cut part (421) is copied and redistributed at another position.

Description

technical field [0001] The present invention relates to a light diffusion plate, and more particularly to a method for designing a light diffusion pattern of the light diffusion plate. Background technique [0002] In direct lighting fixtures, a light diffuser is used to soften the light from a light source (halogen lamp, LED, laser, etc.) to the eyes. However, in order not to degrade the lighting quality, it is necessary to reduce uneven brightness and coloration caused by direct transmission of the lamp image and generation of interference patterns. A light-diffusing plate is required to have a high transmittance and to diffuse light uniformly. As a light diffusing plate, the most common one is a milky white light diffusing plate. By adding light-diffusing particles such as glass, acrylic, barium sulfate, titanium dioxide, ammonia oxide, and silicon-based rubber to base resins with high light transmittance such as acrylic resins and polycarbonate resins, the incident lig...

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 Patents(China)
IPC IPC(8): G02B5/02F21V5/04
CPCG02B3/0043G02B5/0221G02B5/0263G02B5/0268G02B27/0012
Inventor 内田厚平井政至唐井贤
Owner KURARAY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com