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Composite optical device, mold, preparation method and optical system

A technology of optical devices and molds, which is applied in the field of optical systems and composite optical devices, can solve the problems of poor uniformity of devices, poor uniformity of color temperature and light emission of powder layer thickness devices, and difficulty in ensuring the uniformity of phosphor layer thickness, etc.

Active Publication Date: 2012-03-14
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production and research, it is difficult to ensure the uniform thickness of the powder layer in the coating process of phosphor powder, which leads to poor uniformity of color temperature and luminescence of the device; especially for substrates with complex shapes and structures, the traditional phosphor coating process It is even more difficult to ensure the uniformity of the thickness of the phosphor layer, resulting in poor uniformity of the color temperature and light emission of the device

Method used

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  • Composite optical device, mold, preparation method and optical system
  • Composite optical device, mold, preparation method and optical system
  • Composite optical device, mold, preparation method and optical system

Examples

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preparation example Construction

[0030] see image 3 , the preparation method of the composite optical device 100 includes the following steps:

[0031] Step S110, weighing a certain mass of transparent matrix material or its precursor and phosphor.

[0032] Step S120, uniformly dispersing phosphor powders of different qualities in the transparent matrix or its precursors respectively to form five mixed precursors with different phosphor powder concentrations. In the five mixed precursors, the concentrations of phosphor powder are respectively 5%, 4%, 3%, 2% and 1%. The mixed precursor must meet the requirement that the fluorescent powder will not agglomerate and settle therein, so as to ensure the uniform dispersion of the fluorescent powder.

[0033] Step S130, adding the mixed precursors with different concentrations of fluorescent powder into the mold sequentially.

[0034] Please also see Figure 4 and Figure 5 , the mold 200 for manufacturing the composite optical device 100 according to an embodime...

Embodiment 1

[0046] In this embodiment, the transparent base material used is PMMA particles, the fluorescent substance used is TAG fluorescent powder, and the concentration gradient designed according to the used blue LED chip is (weight percentage of fluorescent powder) 20%, 18%, 16% , 14% and 12%. Weigh 8.0 grams of PMMA particles, 2.0 grams of TAG phosphor, and the mass ratio of PMMA to YAG is 80:20. The PMMA particles were dissolved in 20 ml of chloroform to form a PMMA chloroform solution, and then TAG phosphor was added into the PMMA chloroform solution, and the TAG phosphor was uniformly dispersed in the solution under stirring. During the continuous stirring process, due to the volatilization of chloroform, the viscosity of the solution gradually increased. When the solution forms a uniform yellow viscous colloid, pour the colloid into Figure 4 The innermost molding cavity of the mold is shown. The above preparation process was repeated to complete the preparation of viscous c...

Embodiment 2

[0048] In the present embodiment, the transparent base material used is the AB glue of epoxy resin, and the fluorescent substance used is YAG phosphor powder, and the concentration gradient designed according to the used blue LED chip is (weight percentage of phosphor powder) 40%, 50% % and 60%. Weigh 6.0 grams of epoxy resin AB glue and 4.0 grams of YAG phosphor, and the mass ratio of epoxy resin AB glue to YAG is 60:40. Add YAG phosphor powder to glue A, mix well and then add glue B to it. Continue to mix for 10 to 15 minutes, and degass after the colloid is mixed evenly. After the degassing is completed, pour the colloid into the molding cavity separated by the baffle in the mold. Repeat the above preparation process to complete the preparation of the colloids with the mass ratios of AB glue and YAG of 1:1 and 40:60 according to the concentration gradient. After the colloid is poured into the mold, let it stand still, degas and then remove the baffle, and heat it to 80 d...

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Abstract

The invention discloses a composite optical device. The composite optical device comprises a transparent substrate and fluorescent powder dispersed in the transparent substrate, wherein the transparent substrate has a central axis, and the concentration of the fluorescent powder in the transparent substrate gradually decreases along the direction away from the central axis. The composite optical device has excellent optical performance. The invention also discloses a mold for preparing the composite optical device, a method for preparing the composite optical device and an optical system applying the composite optical device.

Description

【Technical field】 [0001] The invention relates to an optical device, in particular to a composite optical device, a mold for preparing the composite optical device, a method for preparing the composite optical device and an optical system using the composite optical device. 【Background technique】 [0002] With the development of society and the improvement of people's living standards, more and more products that can facilitate people's lives are produced and used in large quantities. For people's daily life, lighting products have become a necessary tool for people's daily life. The development of new lighting sources continues to emerge. Among the many lighting products, high-efficiency and energy-saving fluorescent lamps and light-emitting diode (Light Emitting Diode, LED) light sources based on semiconductor lighting technology have become the backbone of lighting products and future development. trend. [0003] All fluorescent lamps and current commercial white LED lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/50H01L33/00
Inventor 周明杰马文波翁方轶
Owner OCEANS KING LIGHTING SCI&TECH CO LTD