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
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  • Abstract
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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

Method used

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  • 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

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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 ...

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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

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Application Information

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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
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