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

Engineering diffusion sheet and random microlens array boundary processing method

A micro-lens array, micro-lens technology, applied in the direction of lenses, instruments, optics, etc., can solve the problems of high sudden change and low utilization of light energy.

Active Publication Date: 2021-09-10
SVG TECH GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art. On the one hand, it provides an engineering diffuser to solve the problem that the engineering diffuser with a microlens array produced in the prior art has a high degree of difficulty in the microlens structure. sudden change, leading to the problem of low utilization rate of light energy, the technical solution adopted is as follows:

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
  • Engineering diffusion sheet and random microlens array boundary processing method
  • Engineering diffusion sheet and random microlens array boundary processing method
  • Engineering diffusion sheet and random microlens array boundary processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] See figure 1 , is the design grayscale image of a random microlens array designed according to the existing scheme and the local enlarged image of the specified position. The design grayscale image is randomly filled into a random quadrilateral by a single microlens unit. Since the quadrilateral border to the lens center The distance between the points is not equal, so even if the parameters such as the curvature and aperture of the microlens on both sides of the boundary are the same, the gray values ​​​​on both sides of the boundary cannot be made equal, and because the quadrilaterals are random, the larger the size difference of the quadrilaterals on both sides of the boundary, The difference in gray value is also larger. If multiple microlens units are used to fill, the gray value on both sides of the boundary is different due to the difference in curvature and conic coefficient, that is, the gray value changes suddenly. At this time, the boundary processing method ...

Embodiment 2

[0054] In another aspect, the present invention also provides a random microlens array boundary processing method, which can reduce the sudden change in height between two adjacent microlenses, reduce the processing difficulty of the diffuser, and improve the obtained The optical effect of the diffuser, the method comprising:

[0055] Provide a grayscale image of the initial design of the random microlens array;

[0056] performing convolution processing on the initial design grayscale image of the random microlens array to obtain an optimized design grayscale image;

[0057] The random microlens array is manufactured based on the optimized design grayscale image, and an engineering diffusion sheet is obtained.

[0058] In the above method, the initial design grayscale image of the random microlens array needs to be convoluted according to the precision of the lithography equipment, and the convolution processing can be realized by the following method:

[0059] First, a con...

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
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an engineering diffusion sheet and a random microlens array boundary processing method. The diffusion sheet comprises an optical substrate and a microlens array formed on the optical substrate, the microlens array comprises a plurality of distributed microlenses, the junctions of every two adjacent microlenses are in transition connection through an adjacent transition curved surface, a top curved surface protrusion is formed in the intersection area of the adjacent transition curved surfaces. The random microlens array boundary processing method comprises the following steps: performing convolution processing on an initial design grayscale image of a random microlens array to obtain an optimal design grayscale image; and manufacturing the engineering diffusion sheet based on the optimal design grayscale image. By using the engineering diffusion sheet and the random microlens array boundary processing method provided by the invention, the height mutation between the lenses on the diffusion sheet can be eliminated, the processing difficulty is reduced, and the light utilization rate is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an engineering diffuser and a random microlens array boundary processing method. Background technique [0002] The demand for high-quality light sources in fields such as face recognition and three-dimensional detection that have emerged in recent years is also increasing. As a high-quality light source, laser is also used in various application scenarios. From the characteristics of semiconductor lasers, it can be known that the emitted laser beam has a Gaussian distribution with a large divergence angle, and the divergence angles of the fast and slow axes are different, resulting in the intensity distribution in the direction of the fast and slow axes. Asymmetry reduces the quality of the beam, thereby limiting the development and application of semiconductor lasers, so it is very important to homogenize the beam of semiconductor lasers. Microlens array is a kind of engineeri...

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): G02B3/00G02B27/00G02B5/02G02B27/09
CPCG02B3/0037G02B3/0043G02B27/0012G02B5/0221G02B27/0927G02B27/0961
Inventor 李瑞彬罗明辉乔文徐越成堂东陈林森
Owner SVG TECH GRP 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