Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultraviolet LED optical system for surface curing and manufacturing method thereof

A technology of an optical system and a manufacturing method, which is applied in the field of optical systems for UV LED surface curing, and can solve problems such as poor uniformity of light spots, difficulty in packaging, and difficulty in meeting the requirements of ultraviolet curing for irradiance intensity and uniformity of light spots.

Inactive Publication Date: 2016-12-07
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many ultraviolet optical systems adopt LED array arrangement. For the light emitted by the lamp beads without light distribution directly irradiating the surface of the cured object, the light spots formed by the lamp beads will overlap with the light spots formed by the surrounding lamp beads, and the uniformity of the light spots is poor.
Through theoretical calculation, the chip spacing can be obtained. Although the illumination uniformity of the spot can be improved, the LED is a Lambertian light source, that is, the light intensity is distributed in a cosine manner. The half-value angle of the LED light source without light distribution is large, and the light diverges. Calculated The optimal chip spacing is large, it is difficult to achieve compact packaging, and the irradiance intensity and uniformity of the spot formed on the target plane are difficult to meet the requirements of UV curing, and after the working distance slightly deviates from the fixed working distance, the irradiance intensity and uniformity Significant decline

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
  • Ultraviolet LED optical system for surface curing and manufacturing method thereof
  • Ultraviolet LED optical system for surface curing and manufacturing method thereof
  • Ultraviolet LED optical system for surface curing and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] A method for manufacturing an ultraviolet LED surface curing optical system, comprising the following steps:

[0074] Step 1: If figure 1 As shown, a plane coordinate system is established with the coordinate origin O(0,0), including the X-axis and Y-axis, and the coordinate origin O is the ultraviolet LED light source. The following are the discrete inner and outer contours of the near-Lambertian LED lens Derivation of point coordinate iterative relationship;

[0075] Production of near-Lambertian LED lens outline;

[0076] The light emitted from the LED chip passes through point P on the inner surface of the lens and point Q on the outer surface of the lens, and undergoes two refractions. It can be seen from the optical theory that when the two deviation angles of the light rays are equal, the phase difference of the lens is the smallest, and it can be obtained:

[0077] θ = α + β ...

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 invention discloses an ultraviolet LED optical system for surface curing. The ultraviolet LED optical system comprises an approximate lambert light type LED lenses, LED chips and a substrate. The invention further discloses a manufacturing method applied to the ultraviolet LED optical system for surface curing. The manufacturing method includes the following steps that 1, contour lines of the approximate lambert light type LED lenses are manufactured; 2, half-value angles of the approximate lambert light type LED lenses are determined; 3, the optimal space of an approximate lambert light type LED lens array is calculated; and 4, an approximate lambert light type LED lens model is obtained, the half-value angle of an LED chip and approximate lambert light type LED lens combined light source is obtained, and the optimal light source space is obtained. The ultraviolet LED optical system for surface curing has the advantages of being compact in structure, capable of increasing ultraviolet curing light spot illumination intensity, the energy utilization rate and the illumination uniformity, and the like.

Description

technical field [0001] The invention relates to the technical field of ultraviolet LED curing, in particular to an optical system for ultraviolet LED surface curing and a manufacturing method thereof. Background technique [0002] Ultraviolet LED is a new technology emerging with LED. It is mainly used in curing fields, such as printing, ink curing, UV glue and other industries. Compared with traditional curing sources such as high-pressure mercury lamps and metal halide lamps, ultraviolet LEDs are energy-saving, environmentally friendly Long life, open or close at any time and so on. With the maturity of UV LED technology, it will soon replace the traditional curing light source. [0003] At present, many ultraviolet optical systems adopt LED array arrangement. For the light emitted by the undistributed lamp beads directly irradiating the surface of the cured object, the light spots formed by the lamp beads will overlap with the light spots formed by the surrounding lamp b...

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): F21K9/20F21K9/69F21V5/04G02B3/00G02B27/00F21Y115/10
CPCG02B27/0012F21V5/046G02B3/00
Inventor 文尚胜向昌明陈志涛陈颖聪
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com