CN202025799U - Integrated white light LED capsulation applicable to visible light communication - Google Patents
Integrated white light LED capsulation applicable to visible light communication Download PDFInfo
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- CN202025799U CN202025799U CN2011201545712U CN201120154571U CN202025799U CN 202025799 U CN202025799 U CN 202025799U CN 2011201545712 U CN2011201545712 U CN 2011201545712U CN 201120154571 U CN201120154571 U CN 201120154571U CN 202025799 U CN202025799 U CN 202025799U
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- light led
- led chip
- condenser lens
- infrared sensor
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Abstract
Provided is an integrated white light LED capsulation having illumination function and capable of sending modulating signals and receiving infrared signals. The integrated white light LED capsulation comprises a packaging frame, a condenser lens in fixed connection with the packaging frame, and a blue light LED chip and infrared sensor chips welded upon the pad of the packaging frame, wherein the surface of the blue light LED chip is coated by a yellow fluorescent powder layer; and both the blue light LED chip and the infrared sensor chips are capsulated inside the condenser lens.
Description
Technical field
The utility model relates to the LED encapsulating structure, especially is applied to the integral type white light LEDs encapsulation of visible light communication (VLC).
Background technology
The later stage nineties 20th century, along with the development of full light access technology and people requirement to wireless broadband communication, a kind of information capacity has obtained people's very big concern greatly with flexible, easy to maintenance, the safe and secret wireless light communication technology of deployment, it provides a kind of solution flexibly for the quick deployment that WiMAX inserts, and its range of application marches toward civil area from military and space industry.The wireless light communication technology is a kind of wireless access wide band technology, is the product that optical communication technique and wireless communication technology combine, and it is carrier with the light signal, carries out light signal by atmosphere as transmission medium and transmits.The current wireless optical communication technique mainly contains following several: free space optical communication (FSO:Free SpaceOptical Communication), indoor infrared communication and visible light communication (VLC:Visible Light Communication).FSO general using wavelength is the infrared light of 850nm or 1550nm, indoor infrared communication general using LED infrared light, and VLC then utilizes the LED visible light.Wireless light communication carries out light signal with atmosphere as transmission medium and transmits, as long as have unscreened los path and enough light emitting powers between two terminals of transmitting-receiving, communication just can be carried out.
Visible light LED wireless communication technology has following advantage:
(1) visible light is as safe as a house to the mankind.Visible light communication system can use the illuminating lamp of family or office to send data;
(2) visible light communication is ubiquitous.The illuminating lamp that is used to communicate by letter can be installed in Anywhere, by illuminating lamp, can realize High Bit-rate Wireless Data Communication easily;
(3) transmitting power height.For radio communication, radiofrequency signal is harmful, can not unrestrictedly increase transmitting power.For the normal optical radio communication, owing to be subjected to the restriction of eye safety, transmitting power is very low, and systematic function is severely limited.In the VLC system, be visible light owing to what launch, so transmitting power is higher;
(4) need not the radio-frequency spectrum licence.Owing to be subjected to radio-frequency spectrum control, available radio frequency is very limited;
(5) no electromagnetic interference.Can be used for the occasion to the strict restriction of electromagnetic interference such as hospital, aircraft and space station.
In traditional light wireless communication technology, the inhibition ability that infrared communication is disturbed to external world is stronger, but because its sensing feature is very strong, therefore meeting with object in the communication on the way in a single day gets involved, with regard to the normal transmission that is easy to influence signal, so the coverage scope of infrared communication is just shorter relatively because of stopping.And infrared ray can see through cornea and be absorbed by crystalline lens, also can be absorbed by iris and ciliary body, and wherein a part can reach retina and cause amphiblestroid damage.Ultraviolet ray can produce infringement to eyeball, mainly damages corneal epithelium.On the contrary, even the visible light power output can not brought harm to eyes up to tens watts yet.
Summary of the invention
In order to realize the optical communication technique of transmitting power height, no electromagnetic interference, energy savings, the utility model provides has illumination functions, the integral type white light LEDs encapsulation that can send modulation signal again and can receive infrared signal.
The integral type white light LEDs encapsulation that is applied to visible light communication provided by the utility model, comprise package support, the condenser lens of fixedlying connected with described package support, be weldingly fixed on blue-light LED chip and infrared sensor chip on the described package support pad, described blue-light LED chip surface-coated yellow fluorescence bisque, described blue-light LED chip and infrared sensor chip all are enclosed among the condenser lens admittedly.
Need finish dual-mode owing to realize the white light communication process, be up link and down link, in this integral type White-light LED package structure, the mixed white light that produces of the yellow fluorescence bisque of blue-light LED chip and surface-coated, finish the white light signal modulation when realizing the output of illumination white light, to information receiving terminal emission information, i.e. down link operating mode.And when infrared sensor chip and LED blue chip be packaged together, must make infrared sensor do not encapsulated the influence of silica gel, because (UniformDistribution) evenly rubbing method is adopted in the encapsulation of traditional white light LEDs, fluorescent material and packaging plastic stirring back are integral chip and support sealing, so infrared sensor chip and LED blue chip are together by such rubber powder body sealing, infrared information is blocked on outside the transducer, makes the infrared signal transmission failure.For this reason, must change traditional even rubbing method encapsulation, adopt (Conformal Distribution) conformal distribution, on blue-light LED chip, apply with phosphor powder layer separately, afterwards blue-light LED chip and infrared sensor infrared sensor chip one being reinstated material such as transparent silica gel makes the condenser lens that forms and seals admittedly, so the information that infrared sensor chip just can the receiving terminal emission promptly is up link for terminal.
White light LEDs has the very high characteristics of response sensitivity, is fit to be used for carry out the ultrahigh speed data communication.Current VLC technology is in the technical emerging wireless light communication technology that grows up of white light LEDs, in the encapsulation of this integral type white light, because the brightness of white light LEDs is very high and modulation rate is very high, so have communication and the double action of throwing light on, the flicker of people's the complete imperceptible light of eyes, have advantages such as low in energy consumption, long service life, size are little, environmental protection, possess wide application prospect.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Description of drawings
Fig. 1 is the plan structure schematic diagram that is applied to the integral type white light LEDs encapsulation embodiment of visible light communication of the present utility model.
Fig. 2 is the structural representation of looking up of Fig. 1.
Embodiment
As Fig. 1, shown in Figure 2, the integral type white light LEDs encapsulation embodiment that is applied to visible light communication of the present utility model, comprise the package support of making of Metal Substrate PCB circuit board or ceramic material 1, on package support 1, etch the pad that is used for the solid welding led chip, blue-light LED chip 4 and infrared sensor chip 2 are weldingly fixed on the pad of package support 1 with the epoxy resin viscose glue respectively, adopt (ConformalDistribution) conformal distribution, at blue-light LED chip 4 surface-coated yellow fluorescence bisques, the blue light of blue-light LED chip 4 emission 450-465nm wave bands, excitation wavelength is mixed to produce white light for the 556-590nm yellow fluorescent powder.Condenser lens 3 all is encapsulated in blue-light LED chip 4 and infrared sensor chip 2 wherein admittedly, and these condenser lens 3 usefulness high viscosity silica gel instil, and through being solidificated in behind the air cooking on the package support 1.
Be working well of down link in the assurance dual-mode, at least two infrared sensor chips 2 of solid envelope are to realize redundancy of effort among condenser lens 3, a plurality of infrared sensor chip 2 concurrent workings can receive the signal of down link and carry out complementation, strengthen the serviceability of present embodiment.
Present embodiment is provided with three infrared sensor chips 2 especially in condenser lens 3, and blue-light LED chip 4 is installed in the central authorities of condenser lens 3, and three infrared sensor chips 2 are circularly and evenly distributed around blue-light LED chip 4, the 120 degree solid weldings of promptly being separated by on the circumference that with blue chip 4 is the center.This integral type white light LEDs encapsulation embodiment is installed when using needn't consider the dimensional orientation factor, but the omnibearing infrared signal of the reception of amplitude peak.
Claims (3)
1. integral type white light LEDs encapsulation that is applied to visible light communication, it is characterized in that: comprise package support, the condenser lens of fixedlying connected with described package support, be weldingly fixed on blue-light LED chip and infrared sensor chip on the described package support pad, described blue-light LED chip surface-coated yellow fluorescence bisque, described blue-light LED chip and infrared sensor chip all are enclosed among the condenser lens admittedly.
2. the integral type white light LEDs encapsulation that is applied to visible light communication according to claim 1 is characterized in that: at least two infrared sensor chips of solid envelope among the described condenser lens.
3. the integral type white light LEDs encapsulation that is applied to visible light communication according to claim 2, it is characterized in that: described blue-light LED chip is positioned at condenser lens central authorities, the individual infrared sensor chip that is circularly and evenly distributed around blue-light LED chip of solid inside back cover among the condenser lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201545712U CN202025799U (en) | 2011-05-12 | 2011-05-12 | Integrated white light LED capsulation applicable to visible light communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201545712U CN202025799U (en) | 2011-05-12 | 2011-05-12 | Integrated white light LED capsulation applicable to visible light communication |
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| Publication Number | Publication Date |
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| CN202025799U true CN202025799U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201545712U Expired - Fee Related CN202025799U (en) | 2011-05-12 | 2011-05-12 | Integrated white light LED capsulation applicable to visible light communication |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098037A (en) * | 2015-08-10 | 2015-11-25 | 南京邮电大学 | Communication and lighting multiplex LED lamp |
| CN105140363A (en) * | 2015-08-12 | 2015-12-09 | 华南师范大学 | Power type visible light communication LED device |
| CN106449864A (en) * | 2016-08-30 | 2017-02-22 | 张为凤 | Manufacturing method for optical detector |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
-
2011
- 2011-05-12 CN CN2011201545712U patent/CN202025799U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098037A (en) * | 2015-08-10 | 2015-11-25 | 南京邮电大学 | Communication and lighting multiplex LED lamp |
| CN105140363A (en) * | 2015-08-12 | 2015-12-09 | 华南师范大学 | Power type visible light communication LED device |
| CN105140363B (en) * | 2015-08-12 | 2018-03-09 | 华南师范大学 | Power-type visible light communication LED component |
| CN106449864A (en) * | 2016-08-30 | 2017-02-22 | 张为凤 | Manufacturing method for optical detector |
| CN106449864B (en) * | 2016-08-30 | 2018-05-29 | 江苏派诺光电科技股份有限公司 | A kind of manufacturing method of light-detecting device |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20140512 |