Fluorescence lens, manufacturing method thereof and white-light lighting lamp manufactured by using fluorescence lens

A lighting and lens technology, applied in the field of white light lighting, can solve the problems of inaccurate proportioning, difficult uniformity control, increased production cost, etc., and achieves the effect of good light uniformity, avoiding repeated waste, and reducing investment costs.

Inactive Publication Date: 2012-05-02
广东华燚光电科技有限公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing LED packaging technology usually mixes phosphor powder and transparent packaging glue, then uses a dispenser to dispense the phosphor powder and transparent packaging glue on the LED chip, and then adds a lens to complete the packaging, but in the actual operation process Among them, if the ratio of phosphor powder is inaccurate and the test after dispensing does not meet the requirements, the entire lamp chip can only be discarded, because the cost of LED chips accounts for more than 90% of the total cost of LED lamp chips, which increases the production cost
At present, only dispensing mode can be used on LED chips, and other methods such as evaporation and sputtering cannot be directly operated on LED chips.
The disadvantage of glue dispensing is that after the phosphor powder is mixed with the glue, it is difficult to control the uniformity
Because the phosphor powder is easy to precipitate, it leads to uneven glue distribution and poor control of glue quantity, resulting in poor light uniformity, poor color tone consistency, easy deviation of color temperature and unsatisfactory color rendering
The dispensing process cannot be processed independently
Affect the speed of LED packaging, these problems need to be solved

Method used

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  • Fluorescence lens, manufacturing method thereof and white-light lighting lamp manufactured by using fluorescence lens
  • Fluorescence lens, manufacturing method thereof and white-light lighting lamp manufactured by using fluorescence lens
  • Fluorescence lens, manufacturing method thereof and white-light lighting lamp manufactured by using fluorescence lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A fluorescent lens 2 is composed of a concave lens 2-1, a convex lens 2-2 and a phosphor layer 5 on the surface of the convex lens 2-2, see figure 1 shown. Both ends of the lens 2 are flat surfaces, and a yellow and / or green and / or red and / or blue phosphor layer 5 is vapor-deposited or sputtered or dispensed on the surface of the convex lens 2-2.

Embodiment 2

[0025] The method steps of manufacturing above-mentioned fluorescent lens 2 are:

[0026] (1) With the help of optical simulation software, input the optical characteristics of the laser diode chip or light-emitting diode chip, such as half-value angle, power, light type, and the reflectivity, refractive index, loss rate, and light transmittance of the matched optical fiber, for comprehensive Simulation, after repeated verification, the optical parameters of the fluorescent lens suitable for matching with the fiber are obtained;

[0027] (2) Make high-precision optical-grade mold cores based on the optical parameters obtained by optical simulation. Firstly, use CNC machine tools to cut the shape of the mold cores, and then make high-precision optical-grade mold cores after grinding and polishing;

[0028] (3) Assemble high-precision optical-grade mold cores and mold bases to form optical-grade injection compression molding molds, and load them on electric injection molding mac...

Embodiment 3

[0031] The first method to cover the convex lens surface of the plastic lens with a phosphor layer is dispensing:

[0032] Configure different ratios of phosphor powder and transparent encapsulant, the ratio range in parts by weight is transparent encapsulant: yellow phosphor: red phosphor: green phosphor: blue phosphor = (1—2.5): (0.1 —2.5): (0.01—2.5): (0.02—2.5): (0.03—2.5), use a dispenser to point the prepared phosphor glue onto the convex lens surface in the lens, adjust the color temperature and dry it , which becomes the fluorescent lens 2.

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Abstract

The invention discloses a fluorescence lens formed by combining a concave lens and a convex lens, and a fluorescent powder layer is filled on the surface of the convex lens. A manufacturing method of the fluorescence lens comprises the following steps: (1) acquiring optical parameters of the fluorescence lens matched with an optical fiber; (2) manufacturing an optical-grade mould core with high precision; (3) assembling and forming a mould and injection molding a transparent optical material such as optical-grade polycarbonate or acryl and the like into a plastic lens with high precision through an electric injection molding machine; and (4) covering a fluorescent powder layer on the surface of the convex lens of the plastic lens to form the fluorescence lens. A white-light lighting lamp manufactured by using the fluorescence lens comprises the optical fiber, the fluorescence lens, a diode light-emitting module and a power supply module which are sequentially matched and arranged and detachably fastened and connected through a mechanical structure. The fluorescence lens has fewer manufacturing processes and is low in cost, one light-emitting module only needs one fluorescence lens, and only the fluorescence lenses with different color fluorescent powder proportions are needed to be replaced without secondary light distribution.

Description

technical field [0001] The invention relates to the technical field of white light illuminating lamps, in particular to a fluorescent lens, a manufacturing method thereof, and a white light illuminating lamp manufactured with the fluorescent lens. Background technique [0002] The existing LED packaging technology usually mixes phosphor powder and transparent packaging glue, then uses a dispenser to dispense the phosphor powder and transparent packaging glue on the LED chip, and then adds a lens to complete the packaging, but in the actual operation process Among them, if the proportion of phosphor powder is not accurate, and the test after dispensing does not meet the requirements, the entire lamp chip can only be discarded, because the cost of LED chips accounts for more than 90% of the total cost of LED lamp chips, which increases the production cost. At present, only dispensing mode can be used on LED chips, and other methods such as evaporation and sputtering cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/58H01L33/50H01L33/00C23C14/35C23C14/24B05D1/26
Inventor 王培贤苏晋平
Owner 广东华燚光电科技有限公司
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