CN201416781Y - LED light source using optical device with COC transparent substrate - Google Patents
LED light source using optical device with COC transparent substrate Download PDFInfo
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- CN201416781Y CN201416781Y CN2009201329735U CN200920132973U CN201416781Y CN 201416781 Y CN201416781 Y CN 201416781Y CN 2009201329735 U CN2009201329735 U CN 2009201329735U CN 200920132973 U CN200920132973 U CN 200920132973U CN 201416781 Y CN201416781 Y CN 201416781Y
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The utility model provides an LED light source using an optical device with COC transparent substrate, which comprises an LED device with at least one LED chip, and the optical device which is provided on the LED device and comprises the COC transparent substrate. The optical device with the COC transparent substrate is formed by performing film coating on the transparent substrate formed by COC,and the film layer comprises a fluorescent powder film layer and a film layer for blocking the ultraviolet ray and infrared ray. When the LED light source operates, the fluorescent powder film layer on the optical device is excited by blue light or ultraviolet light; the visible lights of other wave band are generated; and the white light is formed by color mixing each partial light; and the filmlayer which blocks the ultraviolet ray and infrared ray can absorb the light that has the wavelength in the short wavelength range shorter than 445 nm and the long wavelength range larger than 700 nm.The utility model also provides the optical device with the COC transparent substrate.
Description
Technical field
The utility model belongs to the LED lighting technical field, especially the coating method of light filtering technique and LED fluorescent material.Be specifically related to the sputter coating technology.
Technical background
Along with the appearance of ultra-bright LED, its efficient is more and more higher, and price descends gradually.Simultaneously LED have life-span length, vibration resistance, luminous efficiency height, noiseless, be not afraid of characteristics such as low temperature, no mercury pollution problem and cost performance height, big potentiality commodity of the alternative traditional lighting utensil of being had an optimistic view of by semicon industry.Ultra-high brightness LED has been expanded LED greatly and has been shown and the lighting source Application for Field at various signals, as lamp, various traffic lights inside and outside the automobile, indoor and outdoor information display screen and backlight.The LED product is used for illumination, will provides more wide application space for LED.
A kind of traditional approach that forms white light LEDs is that blue light or ultraviolet chip excite the fluorescent material that covers above the chip, and the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.
Excite the led chip that forms white light to make synthetic by III-V compound semiconductor GaN material by fluorescent material.The backing material that wherein is used for the GaN chip has Al
2O
3And SiC, chip can send the light of blue light, ultraviolet light or other short-wave band.
The fluorescent material that is used to form white light LEDs generally has YAG fluorescent material (be used for blue chip and excite YAG fluorescent material) and RGB fluorescent material (be used for the ultraviolet chip and excite RGB fluorescent material).Wherein adopt YAG fluorescent material to excite the mode that forms white light the most general.
Typical White-light LED package structure: for the small-power white light LEDs, led chip is placed in the reflector in the support, and support had not only used as the carrier of reflector but also as electrode and electrode pin, and the passage of chip heat diffusion also is provided simultaneously.Chip is positioned over the central authorities of reflector, the difference that is provided with according to chip electrode, and coat elargol or insulating cement (for the unipolar chip in top in bowl cup bottom, the bottom is coated with the elargol of conduction, and for the chip of top bipolar electrode, the bottom is coated with insulating cement), they not only can stick and fixed chip but also can realize good Ohmic contact between chip and electrode; The electrode of chip links to each other with another electrode of support by metal wire welding, thick yttrium-aluminium-garnet (YAG) the yellow fluorescence bisque of the about 100um of coating on GaN blue-light-emitting chip, entire bracket and chip epoxy sealing sealing-in at last, the centre gas of not leaving a blank.Blue light that chip sends and fluorescent material effect fully and excitated fluorescent powder sends gold-tinted makes gold-tinted mix the formation white light mutually with the sodium yellow that appears from phosphor powder layer again.And aspect fluorescent powder coated technique, cause photochromic inequality owing to technology is uncontrollable by directly filling the conventional fluorescent powder application pattern that the cup bowl covers chip, and the generation of the fluorescent powder coated mode of directly filling cup bowl local heat owing to exciting makes the reduction of fluorescent material transformation efficiency.Used fluorescent material territory far away and excite in US5962971 A, US5959316 A, US6294800 a series of patents such as (B1) and document, the Lumileds of LED production firm, companies such as Osram, HP have all proposed the territory far away of fluorescent material separately excitation scheme.It is that a segment distance is arranged between fluorescent material and the chip that fluorescent material territory far away excites, and fluorescent material does not directly contact with chip, the performance that the fluorescent powder coated mode in this far field helps improving light extraction efficiency and improves white light LED part.But, adopt traditional application pattern of the accent fluorescent material of resin or silica gel on consumption, accurately to control difficulty, make that the photochromic difference of making in batch of LED is bigger, controllable color is relatively poor.
Along with the range of application of led light source more and more widely, the light radiation of led light source harm problem must be paid attention to.
The harm that the light that light radiation harm mainly is meant different-waveband causes the excessive irradiation of human body, mainly be to human eye and skin, as near ultraviolet harm, the harm of retina blue light photochemistry, the harm of retina aphacia photochemistry, the harm of retina heat and the skin heat harm etc. of the harm of the photochemistry of skin and eyes, eyes, and easier among both what come to harm is eyes.In recent years, along with the increase day by day of great power LED, the brightness of LED is more and more higher, and radiation hazard is also more and more stronger.
In the wavelength band of light radiation, the short wavelength of purple, near ultraviolet, ultraviolet and near-infrared, infrared L-band be easier to cause biohazard.
Light radiation is as follows to the harm of eyes: 1) be subjected to the ultra-violet radiation irradiation of certain hour when human body, can cause photic keratitis and photic conjunctivitis; 2) long-term UV-irradiation can cause cataract; 3) strong light radiation irradiation can cause retinal burn, and causing the most tangible wave band of effect of this harm is 435～440nm; 4) be accompanied by the harm of retina heat, radiation energy causes photochemistry harm to retina, even can cause the retinitis, and the light harm of wavelength 440nm is maximum; 5) be subjected to the infra-red radiation influence for a long time and can cause cataract, the maximum wave band of harm is 780～1400nm.
And for skin, the injury that light radiation caused has: 1) durable tanned, causing rubefaction and the most significant sore wave band is the following ultra-violet radiation of 320nm; 2) skin aging, long-term radiation energy quickens skin aging, presents drying, coarse, hide-like and the innumerable outward appearance of wrinkle; 3) cutaneum carcinoma is accepted the most serious result that ultra-violet radiation causes for a long time and is caused cutaneum carcinoma.
At present international and domesticly formulating a plurality of corresponding standard aspect the test evaluation of light radiation safety.But LED is difference and the new type light source of coherent sources such as traditional incoherent light source and laser, also is in the starting stage at present for the research of the test and evaluation method of the light radiation harm of LED.
Because LED is in the continuous development of lighting field, CIE (International Commission on Illumination) has made regulation to the security of LED in the CIE of latest edition S 009/E:2002 standard.LED is caused the spoke limit value that exposes to the sun of harm such as near ultraviolet harm, the harm of retina blue light photochemistry, the harm of retina aphacia photochemistry, the harm of retina heat and skin heat harm of photochemistry harm, the eyes of skin and eyes made regulation.After CIE S 009/E:2002 standard was put into effect, IEC all quoted in 2002, and with published new standard IEC-62471 in view of the above in 2006, in issue IEC 60825-2007 in 2007, its importance had some idea of.
Domestic, the national standard " the photoproduction thing security of lamp and lamp system " that is directed to common incoherent, broadband lamp and lamp system is in formal enforcement (GB/T 20145-2006) in 2006, and this standard instructs the photoproduction thing security of various light fixtures.
Thus, light filtering technique technology in the LED lighting technical field and material become an important subject.
The patent documentation of relevant led light source is a lot, but the patent that does not have pair purple, near ultraviolet, ultraviolet and near-infrared, infrared band to filter.
The utility model content
The utility model provides a kind of use to have the led light source of the optics of COC (Cyclic Olefin Copolymer, cyclic olefine copolymer) transparent base.
As shown in Figure 1, the utility model uses the led light source of the optics with COC transparent base, comprise LED device 1 with at least one led chip 11, and be installed in the optics with COC transparent base 2 on the LED device, wherein the light that sends of led chip is mapped to the outside through optics; Optics can just add when packaged LED device 1, also can install when the LED device being carried out the secondary encapsulation, or a plurality of LED device uses an optics jointly.
The LED device can be monochrome or polychrome, and monochrome is the led chip of a certain emission wavelength of encapsulation in the LED device, makes its light that sends a kind of color, has a led chip in the LED device at least; Polychrome then is that led chip mutual encapsulation with multiple different emission is in a LED device, as the mutual encapsulation of red, blue, green three color chip mutual encapsulation or other color chip portfolio.
Optics with COC transparent base is that the transparent base by the COC moulding carries out plated film and forms, and rete has comprised fluorescent powder film layer and ultraviolet-cutoff and ultrared rete.In led light source when work, excite fluorescent powder film layer above the optics by blue light or ultraviolet chip, and the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light; Ultraviolet-cutoff and ultrared rete can absorbing wavelength less than the short wavelength range of 445nm and wavelength greater than the light in long wavelength's scope of 700nm.
The utility model also provides a kind of optics of the COC of having transparent base.
Extremely excellent optical of COC tool, the high grade of transparency and hear resistance (high glass transition temperature), light weight, low moisture absorption, heat-resisting and excellent processing fluidity, high heat-resisting high optical characteristics, excellently block water, characteristics such as gas barrier property and acid and alkali-resistance solvent, than the optics that is more suitable for led light source.
Optics with COC transparent base carries out plated film by the transparent base of COC moulding, comprises the lens by the arbitrary surface of COC moulding, perhaps diaphragm arbitrarily, perhaps arbitrarily the solid geometry shape as transparent base; It is characterized in that: by transparent base surface plating fluorescent powder film layer and the ultraviolet-cutoff and the ultrared rete of COC moulding.
Described fluorescent powder film layer forms for the fluorescent material plated film.Fluorescent material comprises following any or following any several combinations:
1) aluminate serial fluorescent material includes but not limited to:
YAG fluorescent material, contain the YAG fluorescent material of alloy, can be used for white light LEDs, wavelength-tunable, exciting light is green, yellow green, yellow or orange fluorescent powder.
2) silicate series fluorescent material includes but not limited to:
Contain rare earth, silicon, alkaline-earth metal, halogen, oxygen, and the silicate fluorescent powder of aluminium or gallium, under blue light, purple light or ultraviolet excitation, send peak value at the broadband of 500～600nm visible light, half-peak breadth is greater than 30nm;
The fluorescent material that forms by multiple element combinations such as alkaline-earth metal, rare earth, transition metal, halogens, can be used as the light-emitting component of the emission spectrum of excitation source in ultraviolet-green glow zone of 240～510nm excites, send the emission spectrum of peak value in 430～630 scopes, can present the light of indigo plant, bluish-green, green, yellowish green, yellow, Huang Hong, red, white colour;
Europkium-activated alkaline-earth metal phosphosilicate fluorescent material, emission wavelength ranges is at the bluish-green yellow orange light that arrives;
Be suitable for the yellow fluorescent powder that 220～530nm excites; With the orange colour silicate fluorescent powder of wavelength greater than 565nm.
3) nitride/nitrous oxides series fluorescent material includes but not limited to:
Be suitable for by the led chip excited fluorescent powder of 420～470nm, produce the emission of gold-tinted-ruddiness;
Can be obtained the wide range emission of 520～780nm by the effective excited fluorescent powder of the light below the 500nm;
At ultraviolet and the blue-light excited fluorescent material that can produce yellowish red color or red emission down;
Mainly, can suitably regulate the position of emission main peak by the ratio of adjusting alkaline-earth metal based on the fluorescent material of transmitting green light;
Can (380～480nm) excite the fluorescent material that produces green-yellow light by blue light and/or ultraviolet ray;
Emission wavelength is the fluorescent material of 550～610nm;
The α of multinomial jaundice green glow, gold-tinted or ruddiness-Sai Long type fluorescent material;
Behind ultraviolet, visible light or the electron beam excitation of 250～500nm wavelength, can be emitted in the fluorescent material of the green glow of 500～600nm.
4) other fluorescent material includes but not limited to:
A kind of can be had the excitation spectrum of broad by the fluorescent material of ultraviolet light and near ultraviolet excitation, can effectively be excited by the light at 300-420nm; By changing component and doping content, can change chromaticity coordinates;
A kind of red fluorescence powder, the emission peak of its excitation band and blue light gallium nitride based LED is overlapping, can effectively be excited, and main emission wavelength is positioned near the 612nm;
A kind of can effectively being excited by ultraviolet, purple light or blue-ray LED and glow, and when burst of ultraviolel another emission peak adjustable fluorescent material from ruddiness to the green glow;
A kind of fluorescent material is that 220 to 550nm visible light or UV radiation are excited the light emission to obtain to wish effectively by wavelength, glows especially efficiently;
A kind of fluorescent material that sends peak position 612nm ruddiness when being excited by LED;
A kind ofly excite the fluorescent material that issues gold-tinted in 300～500nm ultraviolet or blue-ray LED.
Described fluorescent powder membrane layer thickness is: 10～500 microns.
Described fluorescent powder film layer is one deck incessantly, can be as required according to the identical or different fluorescent powder film layer of graded plating several layers.
Described ultraviolet-cutoff and ultrared rete comprise ultraviolet cutoff rete and infrared ray cut rete.
Described ultraviolet cutoff rete is titanium oxide-cerium oxide rete, and the mass ratio of titanium oxide and cerium oxide is 10～90%: 10～90%.Described ultraviolet cutoff thicknesses of layers is: 10～500 nanometers; Its filter wavelength scope is set at below the 445nm.
Described infrared ray cut rete is piled up by two kinds of high and low refractive index material film spaces and forms; This high-index material film is formed by tantalum pentoxide; This low-index material film is formed by silica.Described infrared ray cut thicknesses of layers is: 10～500 nanometers; Its filter wavelength scope is set at greater than 700nm.
Equal one deck incessantly of ultraviolet cutoff rete and infrared ray cut rete wherein can be as required according to graded plating several layers ultraviolet cutoff rete and infrared ray cut rete.
The utility model uses the led light source of the optics with COC transparent base, can make the lighting of Any shape, and meet IEC 60825-2007 and IEC 62471-2006, and light radiation safety national standard: GB/T 20145-2006 " the photoproduction thing security of lamp and lamp system ".Led light source of the present utility model can improve light extraction efficiency and improve the performance of white light LED part, avoids fluorescent material to be subjected to heat ageing, and improves the uniformity of bulk article on photochromic.Since led light source of the present utility model after filtration the light radiation in the higher wave band of biohazard, therefore, when this led light source uses, just do not need additional in addition filter not reduce light radiation harm.
Description of drawings
Fig. 1 is the structural profile schematic diagram that the utility model uses the led light source of the optics with COC transparent base;
Fig. 2 is the spectral component schematic diagram of an embodiment of the utility model led light source;
Fig. 3 sees through the utility model: the curve map with lambda1-wavelength-incident light percent transmission of the optics of COC transparent base;
Fig. 4 is the generalized section of the led light source of another embodiment of the utility model;
Fig. 5, Fig. 6, Fig. 7, Fig. 8 are the spectral component schematic diagrames of three kinds of embodiment of the utility model led light source;
Fig. 9 is the another embodiment of the utility model: the common schematic diagram that uses the led light source of an optics formation of a plurality of LED devices;
Figure 10 is the another embodiment of the utility model: a kind of schematic diagram of light fixture;
Figure 11 has been suitable for the schematic diagram of the utility model led light source as the LCD TV backlight source.
The specific embodiment
Embodiment one
See also Fig. 1, a LED device 1 has wherein encapsulated 11, one optics 2 of a led chip and has been positioned at led chip 11 tops, and fixing.
During work, the light that led chip 11 sends must be by just being transmitted into the outside behind the optics 2, by the fluorescent powder film layer above the blue-light excited optics, the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light; And the wavelength that led chip sends is filtered less than 445nm with greater than the light in the 700nm scope by optics.
Led chip 11 emission dominant wavelength ranges generally are 420nm～480nm, and the composition of the fluorescent powder film layer on the optics is for exciting the aluminate YAG fluorescent material of gold-tinted.The blue light that led chip sends is by optics and excite fluorescent powder film layer on the optics, and a part of blue light changes gold-tinted into; Blue light and gold-tinted are mixed just to have produced white light, and chromaticity coordinates, colour temperature depend on the ratio of blue light and gold-tinted.The spectral component of led light source as shown in Figure 2, see through optics lambda1-wavelength-incident light percent transmission curve as shown in Figure 3.
In the present embodiment, the COC transparent base is circular tabular thin slice.
Embodiment two
Basic identical with embodiment one, different is that optics is shaped to the round lens curved surface by the COC transparent base, as shown in Figure 4; Clean again and plated film again or be shaped to square lens curved surface.
Embodiment three
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of co-wavelengths, and as two blue chip mutual encapsulation, the emission dominant wavelength ranges generally is 420nm～480nm.
The blue light that led chip sends is by optics and excite fluorescent powder film layer on the optics, and a part of blue light changes gold-tinted into; Blue light and gold-tinted are mixed just to have produced white light, and chromaticity coordinates, colour temperature depend on the ratio of blue light and gold-tinted.And the wavelength that led chip sends is filtered less than 445nm with greater than the light in the 700nm scope by optics.The spectral component of led light source as shown in Figure 2.
Embodiment four
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of different wave lengths.Use red LED chip and blue-light LED chip mutual encapsulation in same device.The fluorescent powder membrane composition of layer that plates on the optics is for can be by blue-light excited silicate or the Nitride phosphor that goes out green glow.Silicate or nitride phosphor material sintering are made into target, the COC transparent base is carried out magnetron sputtering plating.
The emission dominant wavelength ranges of described blue-light LED chip generally is 380nm～480nm; The emission dominant wavelength ranges of red LED chip generally is 580nm～700nm; The peak wavelength scope of the green light of being launched by blue-light excited fluorescent material generally is: 490nm～570nm.
In the led light source, after the green light that blueness, red light and the fluorescent material that two kinds of led chips send excites is mixed, form white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 5.
The chromaticity coordinates of led light source, colour temperature depend on the ratio of several color of light in the light source.In the light component of led light source, the shared ratio of versicolor light is decided as required.Can perhaps change the luminosity of two kinds of chips by concentration, the thickness of fluorescent powder film layer on configuration quantity of two kinds of chips and the optics, to change the spectral component of whole light source by the operating current of regulating led chip respectively.In this led light source, ruddiness generally occupies greater than one of percentage ratio in total light intensity or total light flux, specifically according to using needs to decide, accounts for 5%～20% as ruddiness, or 30%～40%, or other arbitrary proportions.
Embodiment five
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of different wave lengths.Use green light LED chip and blue-light LED chip mutual encapsulation in same device.The fluorescent powder membrane composition of layer that plates on the optics is for can be by the blue-light excited Nitride phosphor that goes out ruddiness.The nitride phosphor material sintering is made into target, the COC transparent base is carried out magnetron sputtering plating.
The emission dominant wavelength ranges of described blue-light LED chip generally is 380nm～480nm; The emission dominant wavelength ranges of green light LED chip generally is 490nm～540nm; The peak wavelength scope of the red light of being launched by blue-light excited fluorescent material generally is: 580nm～655nm.
In the led light source, after the red light that blueness, green light and the fluorescent material that two kinds of led chips send excites is mixed, form white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 6.
The chromaticity coordinates of led light source, colour temperature depend on the ratio of several color of light in the light source.In the light component of led light source, the shared ratio of versicolor light is decided as required.Can perhaps change the luminosity of two kinds of chips by concentration, the thickness of fluorescent powder film layer on configuration quantity of two kinds of chips and the optics, to change the spectral component of whole light source by the operating current of regulating led chip respectively.In this led light source, green glow generally occupies greater than one of percentage ratio in total light intensity or total light flux, specifically according to using needs to decide, accounts for 5%～20% as green glow, or 30%～40%, or other arbitrary proportions.
Embodiment six
Basic identical with embodiment one, different is optics, and comprising in the fluorescent powder film layer can be by the blue-light excited Nitride phosphor that goes out ruddiness and can be by blue-light excited silicate or the Nitride phosphor that goes out green glow.Above-mentioned two kinds of phosphor material powders are mixed in proportion, and sintering is made into target, the COC transparent base is carried out magnetron sputtering plating.
During work, the light that led chip sends must be by just being transmitted into the outside behind the optics, by the fluorescent powder film layer above the blue-light excited optics, and two kinds of phosphor material powders of optical excitation that chip sends under electricity drives, produce ruddiness and green glow respectively, the each several part colour mixture forms white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 7.
Embodiment seven
Basic identical with embodiment six, different is optics, and two kinds of phosphor material powders sintering respectively are made into target, by silicate or Nitride phosphor target the COC transparent base is carried out magnetron sputtering plating earlier, on this basis, carry out magnetron sputtering plating by the Nitride phosphor target again; Or by the Nitride phosphor target COC transparent base is carried out magnetron sputtering plating earlier, carry out magnetron sputtering plating by silicate or Nitride phosphor target again; Or as required, according to graded plating several layers fluorescent powder film layer and ultraviolet-cutoff and ultrared rete.
Embodiment eight
Basic identical with embodiment six, different is optics, contain three kinds of phosphor material powders in the fluorescent powder film layer, comprise can by the blue-light excited Nitride phosphor that goes out ruddiness, can by the blue-light excited silicate that goes out green glow or Nitride phosphor, can be by the blue-light excited YAG fluorescent material that goes out gold-tinted.Above-mentioned three kinds of phosphor material powders are mixed in proportion, and sintering is made into target, the COC transparent base is carried out magnetron sputtering plating.
During work, the light that led chip sends must be by just being transmitted into the outside behind the optics, by the fluorescent powder film layer above the blue-light excited optics, and two kinds of phosphor material powders of optical excitation that chip sends under electricity drives, produce ruddiness, green glow and gold-tinted respectively, the each several part colour mixture forms white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 8.And the wavelength that led chip sends is filtered less than 445nm with greater than the light in the 700nm scope by optics.
Embodiment nine
As shown in Figure 9, a plurality of LED devices 1 are combined, and are installed on the PCB 3.At the light direction of all LED devices, an optics 2 has been installed.
Use an optics by a plurality of LED devices are common, comprise that also other must element such as PCB, shell, electronic component etc., constitute a led light source; The structure of whole LED light source is decided as required.During this led light source work, the light that led chip in all LED devices sends must be by just being transmitted into the outside behind the optics, excite fluorescent powder film layer above the optics by blue light or ultraviolet chip, the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.And the wavelength that led chip sends is filtered less than 445nm with greater than the light in the 700nm scope by optics.
Wherein LED device 1 can be monochrome or polychrome, and during for monochrome, the led chip of at least one a certain emission wavelength of encapsulation in the LED device is the blue light of 460nm as dominant wavelength for example.During for polychrome, with the led chip mutual encapsulation of multiple different emission in a LED device, for example as the mutual encapsulation of red, blue two color chip mutual encapsulation or other color chip portfolio.
Embodiment ten
As shown in figure 10, be a kind of example of light fixture, be by the common led light source that uses an optics of a plurality of LED devices equally.A plurality of LED device 1 is combined according to certain rule, and a spherical cover 2 of solid has been installed in the outside, and this cover is an optics.During this led light source work, the light that the led chip in all LED devices sends is mixed into white light through optics and is transmitted into the outside, and by optics the wavelength that led chip sends is filtered less than 445nm with greater than the light in the 700nm scope.
Figure 11 has been suitable for the schematic diagram of the led light source of embodiment one～embodiment eight of the present utility model as the LCD TV backlight origin system.
The led light source 4 that a plurality of uses have the optics of COC transparent base is installed on the PCB5, and led light source is evenly distributed.
Led light source adopts paster that the form of (SMT) is installed, and has made corresponding circuit on the PCB, makes the led light source can operate as normal.
At the light direction of led light source, be arranged in order diffuser plate 6 and a series of blooming 7.
During work, the light that led light source sent all enters diffuser plate, and through fully reflection mixing, by blooming, its effect is that the direction of light is put in order again.Last light shines the rear surface of liquid crystal panel, forms back lighting.
As backlight, present embodiment can be used for various liquid crystal displays, and for example: LCD TV, watch-dog, display are applicable to industry, field such as civilian, military.
More than be that preferred implementation of the present utility model is described, those skilled in the art is in the scheme scope of the utility model technology, and common variation and the replacement carried out all should be included in the protection domain of the present utility model.
Claims (13)
1. a use has the led light source of the optics of COC transparent base, it is characterized in that comprising LED device with at least one led chip, and be installed in optics on the LED device with COC transparent base, wherein the light that sends of led chip is transmitted into the outside through optics.
2. led light source according to claim 1 is characterized in that described optics just adds when the packaged LED device, perhaps install when the LED device being carried out the secondary encapsulation, or a plurality of LED device uses an optics jointly.
3. led light source according to claim 1 is characterized in that the LED device is monochrome or polychrome, and monochrome is the led chip of a certain emission wavelength of encapsulation in the LED device, has a led chip in the LED device at least; Polychrome is that led chip mutual encapsulation with multiple different emission is in a LED device.
4. led light source according to claim 1, the optics that it is characterized in that the described COC of having transparent base are that the transparent base by the COC moulding carries out plated film and forms, and rete has comprised fluorescent powder film layer and ultraviolet-cutoff and ultrared rete.
5. the optics with COC transparent base according to claim 4 carries out plated film by the transparent base of COC moulding, comprises the lens by the arbitrary surface of COC moulding, perhaps diaphragm arbitrarily, perhaps arbitrarily the solid geometry shape as transparent base; It is characterized in that: by transparent base surface plating fluorescent powder film layer and the ultraviolet-cutoff and the ultrared rete of COC moulding.
6. optics according to claim 5 is characterized in that described fluorescent powder film layer forms for the fluorescent material plated film.Fluorescent material comprises following any or following any several combinations:
1) aluminate serial fluorescent material includes but not limited to:
YAG fluorescent material, contain the YAG fluorescent material of alloy, can be used for white light LEDs, wavelength-tunable, exciting light is green, yellow green, yellow or orange fluorescent powder.
2) silicate series fluorescent material includes but not limited to:
Contain rare earth, silicon, alkaline-earth metal, halogen, oxygen, and the silicate fluorescent powder of aluminium or gallium, under blue light, purple light or ultraviolet excitation, send peak value at the broadband of 500～600nm visible light, half-peak breadth is greater than 30nm;
The fluorescent material that forms by multiple element combinations such as alkaline-earth metal, rare earth, transition metal, halogens, can be used as the light-emitting component of the emission spectrum of excitation source in ultraviolet-green glow zone of 240～510nm excites, send the emission spectrum of peak value in 430～630 scopes, can present the light of indigo plant, bluish-green, green, yellowish green, yellow, Huang Hong, red, white colour;
Europkium-activated alkaline-earth metal phosphosilicate fluorescent material, emission wavelength ranges is at the bluish-green yellow orange light that arrives;
Be suitable for the yellow fluorescent powder that 220～530nm excites; With the orange colour silicate fluorescent powder of wavelength greater than 565nm.
3) nitride/nitrous oxides series fluorescent material includes but not limited to:
Be suitable for by the led chip excited fluorescent powder of 420～470nm, produce the emission of gold-tinted-ruddiness;
Can be obtained the wide range emission of 520～780nm by the effective excited fluorescent powder of the light below the 500nm;
At ultraviolet and the blue-light excited fluorescent material that can produce yellowish red color or red emission down;
Mainly, can suitably regulate the position of emission main peak by the ratio of adjusting alkaline-earth metal based on the fluorescent material of transmitting green light;
Can (380～480nm) excite the fluorescent material that produces green-yellow light by blue light and/or ultraviolet ray;
Emission wavelength is the fluorescent material of 550～610nm;
The α of multinomial jaundice green glow, gold-tinted or ruddiness-Sai Long type fluorescent material;
Behind ultraviolet, visible light or the electron beam excitation of 250～500nm wavelength, can be emitted in the fluorescent material of the green glow of 500～600nm.
4) other fluorescent material includes but not limited to:
A kind of can be had the excitation spectrum of broad by the fluorescent material of ultraviolet light and near ultraviolet excitation, can effectively be excited by the light at 300-420nm; By changing component and doping content, can change chromaticity coordinates;
A kind of red fluorescence powder, the emission peak of its excitation band and blue light gallium nitride based LED is overlapping, can effectively be excited, and main emission wavelength is positioned near the 612nm;
A kind of can effectively being excited by ultraviolet, purple light or blue-ray LED and glow, and when burst of ultraviolel another emission peak adjustable fluorescent material from ruddiness to the green glow;
A kind of fluorescent material is that 220 to 550nm visible light or UV radiation are excited the light emission to obtain to wish effectively by wavelength, glows especially efficiently;
A kind of fluorescent material that sends peak position 612nm ruddiness when being excited by LED;
A kind ofly excite the fluorescent material that issues gold-tinted in 300～500nm ultraviolet or blue-ray LED
7. optics according to claim 5 is characterized in that described fluorescent powder membrane layer thickness is: 10～500 microns, fluorescent powder film layer is as required according to the identical or different fluorescent powder film layer of graded plating several layers.
8. optics according to claim 5 is characterized in that described ultraviolet-cutoff and ultrared rete comprise ultraviolet cutoff rete and infrared ray cut rete.
9. optics according to claim 5 is characterized in that described ultraviolet cutoff rete is titanium oxide-cerium oxide rete, and the mass ratio of titanium oxide and cerium oxide is 10～90%: 10～90%.
10. optics according to claim 5 is characterized in that described ultraviolet cutoff thicknesses of layers is 10～500 nanometers; Its filter wavelength scope is set at below the 445nm.
11. optics according to claim 5 is characterized in that described infrared ray cut rete is piled up by two kinds of high and low refractive index material film spaces to form; This high-index material film is formed by tantalum pentoxide; This low-index material film is formed by silica.
12. optics according to claim 5 is characterized in that described infrared ray cut thicknesses of layers is 10～500 nanometers; Its filter wavelength scope is set at greater than 700nm.
13. optics according to claim 5 is characterized in that: as required according to graded plating several layers ultraviolet cutoff rete and infrared ray cut rete.
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| CN2009201329735U CN201416781Y (en) | 2009-06-25 | 2009-06-25 | LED light source using optical device with COC transparent substrate |
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| CN2009201329735U CN201416781Y (en) | 2009-06-25 | 2009-06-25 | LED light source using optical device with COC transparent substrate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102287713A (en) * | 2011-08-16 | 2011-12-21 | 浙江晶日照明科技有限公司 | Adjustable spectrum lamp for plant irradiation |
| CN102415291A (en) * | 2011-08-16 | 2012-04-18 | 浙江晶日照明科技有限公司 | Spectrum adjusting method for plant illumination |
| CN104950515A (en) * | 2014-03-31 | 2015-09-30 | 冠捷投资有限公司 | Display panel with short wave blue light restraining function |
| CN105892145A (en) * | 2016-04-05 | 2016-08-24 | 武汉华星光电技术有限公司 | Display device and display module thereof |
| WO2019019495A1 (en) * | 2017-07-26 | 2019-01-31 | 卢旋坤 | Led-type fluorescent flexible rubber light |
| CN110067950A (en) * | 2019-05-18 | 2019-07-30 | 哈尔滨理工大学 | A kind of full-spectrum LED light mixing system |
| CN110970541A (en) * | 2018-09-29 | 2020-04-07 | 有研稀土新材料股份有限公司 | Semiconductor light source and optical device prepared by same |
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- 2009-06-25 CN CN2009201329735U patent/CN201416781Y/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102287713A (en) * | 2011-08-16 | 2011-12-21 | 浙江晶日照明科技有限公司 | Adjustable spectrum lamp for plant irradiation |
| CN102415291A (en) * | 2011-08-16 | 2012-04-18 | 浙江晶日照明科技有限公司 | Spectrum adjusting method for plant illumination |
| WO2013023468A1 (en) * | 2011-08-16 | 2013-02-21 | 浙江晶日照明科技有限公司 | Spectrum-adjustable lighting for use in plant lighting |
| WO2013023467A1 (en) * | 2011-08-16 | 2013-02-21 | 浙江晶日照明科技有限公司 | Method for adjusting spectrum of lighting for plants |
| CN104950515A (en) * | 2014-03-31 | 2015-09-30 | 冠捷投资有限公司 | Display panel with short wave blue light restraining function |
| CN105892145A (en) * | 2016-04-05 | 2016-08-24 | 武汉华星光电技术有限公司 | Display device and display module thereof |
| CN105892145B (en) * | 2016-04-05 | 2020-07-03 | 武汉华星光电技术有限公司 | Display and display module thereof |
| WO2019019495A1 (en) * | 2017-07-26 | 2019-01-31 | 卢旋坤 | Led-type fluorescent flexible rubber light |
| CN110970541A (en) * | 2018-09-29 | 2020-04-07 | 有研稀土新材料股份有限公司 | Semiconductor light source and optical device prepared by same |
| CN110970541B (en) * | 2018-09-29 | 2023-04-21 | 有研稀土新材料股份有限公司 | Semiconductor light source and optical device prepared by same |
| CN110067950A (en) * | 2019-05-18 | 2019-07-30 | 哈尔滨理工大学 | A kind of full-spectrum LED light mixing system |
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