CN102911490A - Polycarbonate resin fluorescent composite material and fluorescent LED lampshade production method - Google Patents
Polycarbonate resin fluorescent composite material and fluorescent LED lampshade production method Download PDFInfo
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- CN102911490A CN102911490A CN201210349738XA CN201210349738A CN102911490A CN 102911490 A CN102911490 A CN 102911490A CN 201210349738X A CN201210349738X A CN 201210349738XA CN 201210349738 A CN201210349738 A CN 201210349738A CN 102911490 A CN102911490 A CN 102911490A
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- polycarbonate resin
- fluorescent material
- resin composite
- led lampshade
- fluorescent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
Disclosed is a polycarbonate resin composite fluorescent LED lampshade production method, aiming to overcome defects that conventional LED lampshades are low in lighting effect and low in color rendering property. The production method includes preparing a polycarbonate resin fluorescent composite material from polycarbonate resin, YAG fluorescence powder, phosphate flame retardant, antioxidant, compatilizer, coloring agents and additives according to a certain proportion through specific technology, and then heating, extruding, molding and cooling the polycarbonate resin fluorescent composite material by an injection molding machine so as to form polycarbonate resin composite fluorescent LED lampshades. The polycarbonate resin composite fluorescent LED lampshades can prolong service lives of LED, improve energy efficiency utilization, reduce light diffusion and lower temperature of chips and enable heat sinks to be smaller, so that the LEDs can emit high light with low energy consumption, and energy efficiency is improved.
Description
Technical field
The present invention relates to a kind of LED lampshade, specifically a kind of making of polycarbonate resin composite fluorescent material and utilize the polycarbonate resin composite fluorescent material to make the method for LED lampshade.
Background technology
Nineteen ninety Japan scientist Shuji Nakamura has been invented blue-ray LED, and this lays a good foundation for the exploitation white light LEDs, and the white light LEDs of succeeding in developing in 1998 is made blue light GaN chip and yttrium aluminum garnet (YAG) fluorescent powder packaging exactly together.The blue-ray LED substrate is installed in the bowl-type reflection cavity, covers the Resins, epoxy thin layer that scribbles YAG, and the blue light part that the LED substrate sends is absorbed by fluorescent material, and the yellow light mix that another part blue light and fluorescent material send obtains high-brightness white-light.Thisly obtain the method for white light by blue-ray LED+gold-tinted fluorescent material, find to have number of drawbacks through this use in several years: 1, high calorie is decayed rapidly the fluorescent material of the being close to electrode function of being heated during electrode work, and light efficiency lowers; 2, LED is luminous directive property, and optic angle is narrow, is difficult for dispersing, enlarge shadow surface by several different methods after, power consumption can become how much levels to increase with cost; 3, do at present the epoxy encapsulation processing unit of white light LEDs professional too strong, drop into hugely, renovate too fastly, cause device resource serious waste (bankruptcy more than 50% being arranged such as the encapsulation factory in present Shenzhen); 4, lack red wavelength in the light, LED can't accomplish that below the 3000K, blue wavelength is too much in the light at present, the dazzling visual fatigue (dispute is very large at present) that causes; 5, color developing is not high, does not reach the above level of Ra94; 6, along with the increase of power, the LED heat dissipation problem is more and more outstanding, LED can emit a large amount of heat at work, the tube core junction temperature is risen rapidly, cause the Resins, epoxy yellow of encapsulation, chip functions decay, have a strong impact on LED photoelectric parameter (at present LED only have the following T4 of 15W the low-power light source of T5 straight tube and 1-7W can contend with luminescent lamp, and cost be luminescent lamp 5-10 doubly).
Blue-ray LED with the preparation of lampshade mostly is at present: adopt the methods such as the interior electrostatic spraying of glass or PC cover, its paint-on technique is by configuration placenta percreta coating liquid fluorescent material and aura agent etc. to be coated in the diffuser to reach purposes such as improving transmittance, elimination dazzle, but fluorescent material only is difficult to reach maximum homogeneity in the lampshade surface-coated, processing requirement is high and productive rate is lower, cost is expensive, and be difficult to the light efficiency that excites that reaches good, limited the use of product.On the blue-ray LED lampshade technique with the making of this kind method, granularity to the fluorescent material of blue-ray LED lampshade, the factors such as the proportioning of compound, time, temperature have very high requirement, from lampshade the colourity depth, transparent evenly, the requirement of the aspect can't the satisfy blue-ray LED fluorescent lamp shade such as granularity is big or small.Therefore develop with low costly, makes simple and easy, the even good polycarbonate resin resin composite material of light of light transmission, the special-purpose lampshade of blue-ray LED by cheap general extrusion apparatus processing once-forming is very necessary again, and throws light on significant to promoting LED.
Summary of the invention
The present invention is directed to present matrix material lampshade to the technical deficiency of the Color Conversion of blue-ray LED, a kind of polycarbonate resin composite fluorescence LED lampshade making method is provided, it has promoted homogeneity, transmittance, the soft property of LED lamp preferably.
For realizing above purpose, the present invention adopts following technical scheme:
A kind of polycarbonate resin composite fluorescence LED lampshade making method, lampshade is that polycarbonate resin fluorescent material matrix material is made.
The component of described polycarbonate resin fluorescent material matrix material is:
Polycarbonate resin PC, YAG fluorescent material, phosphate flame retardant, oxidation inhibitor, compatilizer, tinting material, processing aid; Its weight percent is: 90 ~ 98%:0.1 ~ 3%:0.5 ~ 4%:0.1 ~ 0.5%:0.1 ~ 1%:0.2 ~ 0.5%:0.1 ~ 1%.Described fluorescent material is Ce and YAG phosphor mixture, and its powder mean diameter is less than 15 μ m.
The manufacture craft of described polycarbonate resin fluorescent material matrix material is:
The first step, 90 ~ 98%:0.1 ~ 3%:0.5 ~ 4%:0.1 ~ 0.5%:0.1 ~ 1%:0.2 ~ 0.5%:0.1 ~ 1% is got polycarbonate resin PC, YAG fluorescent material, phosphate flame retardant, oxidation inhibitor, compatilizer, tinting material, processing aid by weight percentage;
Second step, polycarbonate resin and YAG fluorescent material are concentrated in high-speed mixer and are mixed 3-8 minute in will filling a prescription; Add again corresponding auxiliary agent by filling a prescription and continue the high-speed stirring mixing, the evenly rear compound that from high-speed mixer, takes out to be mixed;
The 3rd step, the mixture that step 2 obtains is sent in twin screw or the reciprocating type single screw extruder, be heated to simultaneously 260-295 ℃ of melting;
The 4th step, the melts of step 3 is extruded from twin screw or reciprocating type single screw extruder, tie rod cools off again, and pelletizing obtains polycarbonate resin fluorescent material composite finished product at last.
Described fire retardant is one or more mixtures in melamine pyrophosphate salt, polydimethylsiloxane, the polymethyl siloxane.
Described oxidation inhibitor is phosphorous acid ester or Hinered phenols, and wherein phosphite ester kind antioxidant is the one or more combination in triethyl phosphorite, tri isopropyl phosphorite, three different certain herbaceous plants with big flowers base phosphorous acid esters, March lauryl phosphorous acid ester, the triphenyl different three different certain herbaceous plants with big flowers base phosphorous acid esters; Hinered phenols antioxidant is one or both combinations in 1010,1076 and 168.
Described compatilizer is the one or more combination among titanate coupling agent TMC-201, TMC-101, TMC-311, TMC-114, TMC-TTS, aluminate coupling agent DL-411, Silane coupling agent KH550, KH570, KH792, the DL602.
Described tinting material is titanium dioxide, ferric oxide, zinc oxide, weisspiessglanz chrome vermillion, and quinacridone is red, the one or more combination in the brown red quinacridone face of gold-tinted, the brown red quinacridone of gold-tinted, purplish red quinacridone, tetrachloroisoindolinone.
Described processing aid is the one or more combination in whiteruss, stearic acid, silicone oil, methyl-silicone oil, silicone grease talcum powder, emulsification methyl-silicone oil, the various metallic soap.
Described LED lampshade making method is:
With above-mentioned polycarbonate resin fluorescent material matrix material through injection moulding machine heating, extruding, moulding, cooling, finishing a kind of polycarbonate resin composite fluorescence LED lampshade.
Compared with prior art, the present invention has following beneficial effect:
A kind of polycarbonate resin composite fluorescence LED lampshade with aforesaid method is made can be converted into white light with the blue light of blue-ray LED.
This fluorescent material and blue chip are separated, lampshade can be made arbitrary shape and color, the fluorescent material decay that former LED exists is unidirection luminous, heating causes.
This Optical manufacture technology and fluorescent material are merged, for illumination production provides arbitrarily geometricdrawing, colour temperature, for light source field has been opened up unprecedented handiness and creativeness, directly replace the epoxy encapsulation equipment of high input, greatly lowered fund input and the wasting of resources, upgraded providing the foundation for expensive LED lighting system;
The accurate proportioning of plurality of raw materials and sufficient melting mixing make the color even of lampshade consistent, at aspects such as aobvious finger and life-spans more excellent performance are arranged;
Traditional different-colour need be prepared different led chip and fluorescent material prescription with aobvious the finger, and the white light LEDs that encapsulates out has very large colour temperature deviation, good article rate is not high, the present invention only can develop multiple color temperatures and aobvious the finger with a blue-ray LED, and the blue-ray LED efficiency improves constantly, so this kind lampshade can be integrated into a new lighting system easily;
The present invention prolong LED life-span, increased the efficiency utilization, reduced light diffusion, reduced chip temperature and less heat sink, send more light with lower energy consumption, improved efficiency.
Embodiment
By the following example the present invention is described in detail, but the present invention is not construed as limiting.
Preparation method is as follows:
Adopt the polycarbonate resin fluorescence composite material such as the present invention, formed by polycarbonate resin, fluorescent material, melamine pyrophosphate salt, three different certain herbaceous plants with big flowers base phosphorous acid esters, Silane coupling agent KH550, titanium dioxide and processing aid.Each component and weight percent see the following form in specific implementation process.
Make fluorescent material with above-mentioned 5 kinds of embodiments and make lampshade, such as power 3W, lampshade wall thickness 0.8mm, fire-retardant GB50222-95 B1 level, blue-ray LED is with respect to as follows without cover lamp situation experimental result:
Weight percent and the experiment effect of various component things are different in the above-mentioned 1-5 embodiment, but the making of fluorescent material and to utilize the gained fluorescent material to make the lampshade process as follows:
The first step, percentage ratio takes by weighing polycarbonate resin, Ce doping YAG fluorescent material, melamine pyrophosphate salt, three different certain herbaceous plants with big flowers base phosphorous acid esters, Silane coupling agent KH550, titanium dioxide, processing aid by weight;
Second step, polycarbonate resin and YAG fluorescent material are concentrated in high-speed mixer and are mixed 3-8 minute in will filling a prescription; Add again corresponding auxiliary agent by filling a prescription and continue the high-speed stirring mixing, the evenly rear compound that from high-speed mixer, takes out to be mixed;
The 3rd step, the mixture that step 2 obtains is sent in twin screw or the reciprocating type single screw extruder, be heated to simultaneously 260-295 ℃ of melting;
The 4th step, the melts of step 3 is extruded from twin screw or reciprocating type single screw extruder, tie rod cools off again, and pelletizing obtains polycarbonate resin fluorescent material composite finished product at last.
Claims (8)
1. polycarbonate resin composite fluorescence LED lampshade making method is characterized in that the component of described polycarbonate resin fluorescent material matrix material is:
Polycarbonate resin PC, YAG fluorescent material, phosphate flame retardant, oxidation inhibitor, compatilizer, tinting material, processing aid; Its weight percent is: 90 ~ 98%:0.1 ~ 3%:0.5 ~ 4%:0.1 ~ 0.5%:0.1 ~ 1%:0.2 ~ 0.5%:0.1 ~ 1%;
Described fluorescent material is Ce and YAG phosphor mixture, and its powder mean diameter is less than 15 μ m;
The manufacture craft of described polycarbonate resin fluorescent material matrix material is:
The first step, 90 ~ 98%:0.1 ~ 3%:0.5 ~ 4%:0.1 ~ 0.5%:0.1 ~ 1%:0.2 ~ 0.5%:0.1 ~ 1% is got polycarbonate resin PC, YAG fluorescent material, phosphate flame retardant, oxidation inhibitor, compatilizer, tinting material, processing aid by weight percentage;
Second step, polycarbonate resin and YAG fluorescent material are concentrated in high-speed mixer and are mixed 3-8 minute in will filling a prescription; Add again corresponding auxiliary agent by filling a prescription and continue the high-speed stirring mixing, the evenly rear compound that from high-speed mixer, takes out to be mixed;
The 3rd step, the mixture that step 2 obtains is sent in twin screw or the reciprocating type single screw extruder, be heated to simultaneously 260-295 ℃ of melting;
The 4th step, the melts of step 3 is extruded from twin screw or reciprocating type single screw extruder, tie rod cools off again, and pelletizing obtains polycarbonate resin fluorescent material composite finished product at last.
2. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1 characterized by further comprising for the 5th step: with polycarbonate resin fluorescent material matrix material through injection moulding machine heating, extruding, moulding, cooling, finishing a kind of polycarbonate resin composite fluorescence LED lampshade.
3. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described fire retardant is one or more mixtures in melamine pyrophosphate salt, polydimethylsiloxane, the polymethyl siloxane.
4. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described oxidation inhibitor is phosphorous acid ester or Hinered phenols, and wherein phosphite ester kind antioxidant is the one or more combination in triethyl phosphorite, tri isopropyl phosphorite, three different certain herbaceous plants with big flowers base phosphorous acid esters, March lauryl phosphorous acid ester, the triphenyl different three different certain herbaceous plants with big flowers base phosphorous acid esters; Hinered phenols antioxidant is one or both combinations in 1010,1076 and 168.
5. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described compatilizer is the one or more combination among titanate coupling agent TMC-201, TMC-101, TMC-311, TMC-114, TMC-TTS, aluminate coupling agent DL-411, Silane coupling agent KH550, KH570, KH792, the DL602.
6. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described tinting material is titanium dioxide, ferric oxide, zinc oxide, weisspiessglanz chrome vermillion, and quinacridone is red, the one or more combination in the brown red quinacridone face of gold-tinted, the brown red quinacridone of gold-tinted, purplish red quinacridone, tetrachloroisoindolinone.
7. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described processing aid is the one or more combination in whiteruss, stearic acid, silicone oil, methyl-silicone oil, silicone grease talcum powder, emulsification methyl-silicone oil, the various metallic soap.
8. a kind of polycarbonate resin composite fluorescence LED lampshade making method according to claim 1, it is characterized in that: described fluorescent material is Ce doping YAG fluorescent material, and its mean particle size should be less than 15 μ m.
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| CN201210349738.XA CN102911490B (en) | 2012-09-20 | 2012-09-20 | The preparation method of a kind of polycarbonate resin fluorescence composite material and fluorescence LED lampshade |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279514A (en) * | 2013-07-03 | 2015-01-14 | 深圳市绎立锐光科技开发有限公司 | Wavelength conversion device, manufacturing method thereof, relevant light emitting device and relevant projection system |
| CN104650567A (en) * | 2015-02-12 | 2015-05-27 | 杭州奥普卫厨科技有限公司 | High-performance photo-diffusive PC raw material |
| CN105020673A (en) * | 2015-07-03 | 2015-11-04 | 汤绍平 | Manufacturing method of LED (Light Emitting Diode) reflecting cover |
| CN105190160A (en) * | 2013-03-04 | 2015-12-23 | 信越化学工业株式会社 | Red lamp and lighting system for vehicle |
| CN105924987A (en) * | 2016-05-23 | 2016-09-07 | 魏国营 | High-heat-dissipation combined type environment-friendly LED lamp |
| CN105968827A (en) * | 2016-05-23 | 2016-09-28 | 魏国营 | Artistic lampshade and lamp body composed of same |
| CN106025006A (en) * | 2016-07-01 | 2016-10-12 | 邓天升 | Fluorescent cover or plate for color conversion excited by blue light and manufacturing method thereof |
| CN106009535A (en) * | 2016-05-23 | 2016-10-12 | 魏国营 | Decomposition type environment-friendly lighting lampshade |
| CN106009534A (en) * | 2016-05-23 | 2016-10-12 | 魏国营 | Multifunctional environment-friendly lampshade structure |
| CN106046805A (en) * | 2016-05-23 | 2016-10-26 | 魏国营 | Three-dimensional sculpture LED decorative lamp |
| CN106046804A (en) * | 2016-05-23 | 2016-10-26 | 魏国营 | Energy-saving environment-friendly LED ceiling lamp |
| CN106122796A (en) * | 2016-05-23 | 2016-11-16 | 魏国营 | LED spotlight with convection heat dissipation function |
| CN106122850A (en) * | 2016-05-23 | 2016-11-16 | 魏国营 | Decorative accessory of LED lamp |
| CN106189840A (en) * | 2016-05-23 | 2016-12-07 | 魏国营 | Anion environmental protection LED illumination lamps and lanterns |
| CN106189273A (en) * | 2016-05-23 | 2016-12-07 | 魏国营 | Negative oxygen ion LED lampshade and lamp composed of same |
| CN106189274A (en) * | 2016-05-23 | 2016-12-07 | 魏国营 | Detachable environment-friendly lampshade |
| CN106221242A (en) * | 2016-05-23 | 2016-12-14 | 魏国营 | LED down lamp with air convection heat dissipation function |
| CN107286619A (en) * | 2017-06-21 | 2017-10-24 | 颍上昌盛电器有限公司 | A kind of environment-protecting LED lampshade formula and preparation method thereof |
| CN111892862A (en) * | 2020-07-28 | 2020-11-06 | 上海蓝宝涂料有限公司 | Finishing varnish and preparation method thereof |
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| CN105190160A (en) * | 2013-03-04 | 2015-12-23 | 信越化学工业株式会社 | Red lamp and lighting system for vehicle |
| CN104279514A (en) * | 2013-07-03 | 2015-01-14 | 深圳市绎立锐光科技开发有限公司 | Wavelength conversion device, manufacturing method thereof, relevant light emitting device and relevant projection system |
| CN104279514B (en) * | 2013-07-03 | 2015-12-02 | 深圳市绎立锐光科技开发有限公司 | Wavelength converter and preparation method thereof, related lighting fixtures and optical projection system |
| CN104650567A (en) * | 2015-02-12 | 2015-05-27 | 杭州奥普卫厨科技有限公司 | High-performance photo-diffusive PC raw material |
| CN105020673A (en) * | 2015-07-03 | 2015-11-04 | 汤绍平 | Manufacturing method of LED (Light Emitting Diode) reflecting cover |
| CN106046805A (en) * | 2016-05-23 | 2016-10-26 | 魏国营 | Three-dimensional sculpture LED decorative lamp |
| CN106122796A (en) * | 2016-05-23 | 2016-11-16 | 魏国营 | LED spotlight with convection heat dissipation function |
| CN106221242A (en) * | 2016-05-23 | 2016-12-14 | 魏国营 | LED down lamp with air convection heat dissipation function |
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