CN203298189U - LED light source with COB module - Google Patents
LED light source with COB module Download PDFInfo
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- CN203298189U CN203298189U CN2013202611585U CN201320261158U CN203298189U CN 203298189 U CN203298189 U CN 203298189U CN 2013202611585 U CN2013202611585 U CN 2013202611585U CN 201320261158 U CN201320261158 U CN 201320261158U CN 203298189 U CN203298189 U CN 203298189U
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Abstract
The utility model discloses an LED light source with a COB module. The LED light source with the COB module comprises a COB module light source and a secondary optical lens, and is characterized in that at least one face of the secondary optical lens is the surface of a micro structure array. According to the technical scheme, compared with the prior art, the LED light source with the COB module can generate mixed light in a small angle range and can solve the problem that a colored spot in a light spot and the light spot is not even. When condensation in a small angle is conducted, the mixed light in the small angle of the micro structure can eliminate the image, projected by the lens, of the LED array, so that the whole light spot is an evenly-distributed round area. When flood-lighting in a large angle is conducted, the mixed-light effect can solve the problem that color temperatures of local colored spots, the middle and the edge of the projected light spot are not even is solved; the size of the beam angle of the LED light source with the COB module is continuous and adjustable, and even illumination of different beam angles from condensation to flood-lighting can be achieved simply by adjusting the relative position between the lens and the LED light source.
Description
Technical field
The utility model relates to the nonimaging optics technical field, specifically, relates to a kind of COB module LED light source with mixed light effect.
Background technology
LED light source (light emitting diode) is due to advantages such as its efficiency height and life-span length, and replacing gradually conventional light source becomes the main stream light sources of a new generation.The market of high-brightness LED illuminating product is sane growth year by year especially.Compare with the LED light source device of single-chip package, the English full name of COB(is: Chips on board, the meaning is that chip array is integrated on same printed circuit board (PCB) and forms a light source module) can save packaging cost, photo engine module cost of manufacture and the secondary light-distribution cost of device in the illumination application.The COB light source module can be avoided the drawbacks such as luminous point that the discrete light sources combination of devices produces, dazzle effectively, can also, by adding suitable red chip combination, under the prerequisite that does not reduce source efficiency and life-span, effectively improve the colour rendering of light source.But, along with update and the fast development of COB light source technology, how designing the effective and reasonable secondary optical lens that is complementary with the COB light source module, is the difficult problem that industry is needed solution badly.Beam angle size continuous adjustable aspect, the lens of prior art are difficult to deal with more.
The patent of publication number CN101018975A, a kind of continuously adjustable secondary optical lens of beam angle of the LED light source for single-chip package was once proposed, it is by the auxiliary optics of the printing opacity of a light emitting diode (LED) and a rotational symmetric single-piece, and this auxiliary optical decorum has the opening of the blind hole type at the mirror portion of the collector lens part of a inside and an outside and a back side.But the patent of publication number CN101018975A, because outside fully reflecting surface, the horn mouth exiting surface of lens is all curved surface smooth, that revolution is symmetrical, the front and rear surfaces of collector lens part and be also smooth convex surface in the middle of it in addition.Due to prism effect of dispersion and convex lens effect, this secondary optical lens has serious color spot and the inhomogeneous problem of hot spot while being applied on COB module LED light source.
When low-angle optically focused, these lens can project the picture of the LED chip array of little by little square overall alignment, in addition when the floodlight of wide-angle, the hot spot that this lens projects goes out, part has the color spot problem, in the middle of hot spot and the colour temperature at edge also inhomogeneous.Secondly, the patent of publication number CN101018975A is because this two-part focal length of the mirror portion of the collector lens of the inside part and outside is inconsistent, while causing lens to be in the position of distance L ED very near (while being floodlighting), hot spot is inhomogeneous, and spot center there will be a shadow.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned defect, and a kind of LED light source of the COB of having module is provided, and the beam angle size that has the mixed light effect in prior art is can not be continuously adjustable to solve, hot spot and inhomogeneous problem.
For addressing the above problem, the technical scheme that the utility model adopts is:
A kind of LED light source with COB module, comprise COB module light source and secondary optical lens, it is characterized in that: the face that has at least of described secondary optical lens is the micro structure array surface.
As a kind of improvement:
Described micro structure array is the scale and shell face of fly's eye microlens array or ring grain lens arra or prismatic.
Distance between described COB module light source and secondary optical lens is adjustable continuously.
As further improvement:
Described secondary optical lens is comprised of for the flange that assembles aspheric surface and the outer ring that the fly's eye microlens array that is additional to the lens bottom surface, upper surface protrude.
Described fly's eye microlens array can be hexagonal array or square arrangement or annular array, and each lenticular size is between 0.5 millimeter to 2 millimeters.
The scope of the beam angle Δ α of described light after the aspheric surface convex lens are assembled is between 3 °≤Δ α≤10 °.
As further improving:
Described secondary optical lens is comprised of the second total reflection prism of the second collector lens in the middle of lens, outer ring and the flange that is positioned at the second total reflection prism outside;
The lower surface of the second collector lens is plane, and the upper surface convex surface is ring grain micro-structural face;
The second total reflection prism is included as the incidence surface on the indent face of cylinder, outermost fully reflecting surface and is the inclined surface of output face, and the upper end of described inclined surface is the horn mouth shape.
Described the second total reflection prism and the second collector lens have identical equivalent focal length.
As further improving:
Described secondary optical lens is by the 3rd collector lens of centre, and the 3rd total reflection prism of outer ring and flange form; The 3rd collector lens be included as plane lower surface, be the upper surface of microlens array surface; The bell mouth shape exiting surface that the 3rd total reflection prism is included as the inboard incidence surface on the indent face of cylinder, tilts for the outside fully reflecting surface of prismatic scale and shell face and upper end.
Described the 3rd total reflection prism has identical focal length with the 3rd collector lens.
Owing to having adopted technique scheme, compared with prior art, the utility model can produce the mixed light of small angle range, can solve color spot in hot spot and inhomogeneous problem.When low-angle optically focused, the low-angle mixed light of micro-structural can be eliminated the out picture of LED chip array of lens projects, with spot shaping, is equally distributed circle; When the floodlight of wide-angle, light mixing effect also can solve the inhomogeneous problem of colour temperature at local color spot, centre and edge in projected spot; Its beam angle size is adjustable continuously, only needs the relative position between mobile lens and LED light source, just can realize the Uniform Illumination of various different beam angles from optically focused to the floodlight.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of secondary optical lens in the LED light source embodiment 1 of a kind of COB of having module of the utility model;
Fig. 2 is the stereogram of secondary optical lens in the LED light source embodiment 1 of a kind of COB of having module of the utility model;
Fig. 3 is the design principle figure of LED light source in the LED light source embodiment 1 of a kind of COB of having module of the utility model;
Fig. 4 is the schematic diagram when in the LED light source embodiment 1 of a kind of COB of having module of the utility model, beam angle is 10 °;
Fig. 5 is the schematic diagram when in the LED light source embodiment 1 of a kind of COB of having module of the utility model, beam angle is 37 °;
Fig. 6 is the schematic diagram when in the LED light source embodiment 1 of a kind of COB of having module of the utility model, beam angle is 80 °;
Fig. 7 is the structural representation of secondary optical lens in the LED light source embodiment 2 of a kind of COB of having module of the utility model;
Fig. 8 is the stereogram of secondary optical lens in the LED light source embodiment 2 of a kind of COB of having module of the utility model;
Fig. 9 is the design principle figure of LED light source in the LED light source embodiment 2 of a kind of COB of having module of the utility model;
Figure 10 is the schematic diagram when in the LED light source embodiment 2 of a kind of COB of having module of the utility model, beam angle is 6.8875252808231462 °;
Figure 11 is the schematic diagram when in the LED light source embodiment 2 of a kind of COB of having module of the utility model, beam angle is 34.291448788908470 °;
Figure 12 is the schematic diagram when in the LED light source embodiment 2 of a kind of COB of having module of the utility model, beam angle is 74.9005800221811460 °;
Figure 13 is the structural representation of secondary optical lens in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 14 is the stereogram of secondary optical lens in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 15 is the design principle figure of the 3rd collector lens of LED light source in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 16 is the design principle figure of the 3rd full emission prism of LED light source in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 17 is the schematic diagram during 13 ° of beam angles in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 18 is the schematic diagram during 40 ° of beam angles in the LED light source embodiment 3 of a kind of COB of having module of the utility model;
Figure 19 is the schematic diagram during 80 ° of beam angles in the LED light source embodiment 3 of a kind of COB of having module of the utility model.
In figure: 11-the first collector lens; 12-fly's eye microlens array; 21-the second total reflection prism; 22-the second collector lens; The 211-incidence surface; The 212-fully reflecting surface; The 213-inclined surface; 222-upper surface convex surface; The 3-flange; 31-the 3rd total reflection prism; The inboard incidence surface of 311-; 312-outside fully reflecting surface; The 313-exiting surface; The 321-lower surface; The 322-upper surface; 4-COB module light source.
The specific embodiment
A kind of LED light source with COB module, comprise COB module light source and secondary optical lens, and the face that has at least of described secondary optical lens is the micro structure array surface.
Described micro structure array is the scale and shell face of fly's eye microlens array or ring grain lens arra or prismatic.
Distance between described COB module light source and secondary optical lens is adjustable continuously.
Embodiment 1: as depicted in figs. 1 and 2, described secondary optical lens is comprised of for the flange 3 that assembles aspheric surface and the outer ring that the fly's eye microlens array 12 that is additional to the first collector lens 11 bottom surfaces, upper surface protrude.
Described fly's eye microlens array 12 can be hexagonal array or square arrangement or annular array, and each lenticular size is between 0.5 millimeter to 2 millimeters.
As Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the scope of the beam angle Δ α of described light after the aspheric surface convex lens are assembled is between 3 °≤Δ α≤10 °.Wherein, Δ α herein is lens minimum beam angles of (when lens focus is in the light-emitting area position of LED) when spot position, and its value equals the numerical aperture angle of lens microstructure.Because the focal length of lens has length, the lens of different focal, the beam angle during optically focused can be between 3 ° to 10 °.
The light that sends from COB module LED light source light-emitting area center O point, after the fly's eye microlens array mixed light of bottom surface 11, assemble by the aspheric surface convex lens of upper surface 12 again, export with a very little beam angle (being also the mixed light angle of fly's eye microlens array) ± Δ α after assembling, be that the beam angle full-shape is 2 Δ α, the scope of Δ α is between 3 °≤Δ α≤10 ° here.Be positioned at each lenticule of bottom surface, meet the condition of (formula 1) between its numerical aperture and mixed light angle Δ α:
According to (formula 1), and, according to required mixed light angular dimension, can draw the required numerical aperture of each lenticule, thereby calculate required lenticular radius of curvature.Wherein, the English full name of N.A. is Numerical Aperture, i.e. numerical aperture.
By the equivalent focus of bottom surface and the formed collector lens of upper surface aspheric surface, when it was positioned at the position of light-emitting area center O point of COB module LED light source, at this time lens were in the position of optically focused, and the beam angle of its output facula is minimum.When lens moved towards COB module LED light source direction, it is large that beam angle will slowly become.Here the flange diameter of preferred lens is 28 millimeters, and the aspheric effective aperture of upper surface is 26 millimeters; Preferred each lenticular numerical aperture angle Δ α=5 °; When lens were in spot position, the distance of lens bottom surface distance C OB surface of light source was 14 millimeters, and the beam angle full-shape is 10 °; When lens moved towards COB module LED light source direction, beam angle slowly became greatly, and lens are in flood position, and during from 7.5 millimeters, COB module LED light source face, the beam angle full-shape is 37 ° when the lens bottom surface; When the lens bottom surface press close to COB module LED light source face only have 1 millimeter apart from the time, the beam angle full-shape can reach 80 °, described 37 ° and 80 ° for lens the angle when flood position (focus of lens leave the position of LED light-emitting area certain apart from the time beam angle that produces.
Embodiment 2: as shown in Figure 7 and Figure 8, described secondary optical lens is comprised of the second total reflection prism 21 of the second collector lens 22 in the middle of lens, outer ring and the flange 3 that is positioned at second total reflection prism 21 outsides; The lower surface 221 of the second collector lens 22 is plane, and upper surface convex surface 222 is ring grain micro-structural face; The second total reflection prism 21 is included as incidence surface 211, the outermost fully reflecting surface 212 on the indent face of cylinder and is the inclined surface 213 of output face, and the upper end of described inclined surface 213 is the horn mouth shape.
Described the second total reflection prism 21 and the second collector lens 22 have identical equivalent focal length.
As shown in Figure 9, a part of light from the second total reflection prism 21 of the directive outer ring that COB module light source center O point sends, incide behind the indent face of cylinder 211 on the fully reflecting surface 212 in the outside, on the horn mouth beam projecting face 213 that tilts above inciding again after total reflection, collimation penetrates after refraction.the light of the remaining part of the second collector lens 22 in the middle of the directive that sends from COB module light source center O point, incide on the convex surface of upper surface after middle the second collector lens lower surface 221 refractions, if convex surface is smooth aspheric surface, so due to the imaging effect of convex lens, the picture that will there will be the chip array of a little in COB module LED light source in output facula, therefore the present embodiment has been done the mixed light processing with middle collector lens upper surface 222, be designed to have the ring grain micro-structural face of mixed light effect, after 222 pairs of incident raies of ring grain micro-structural face radially carry out low-angle mixed light, export along the direction of optical axis OZ again, it can eliminate the picture of color spot inhomogeneous in the hot spot that produces due to convex lens and the chip array of a little, and with spot shaping, be equally distributed circle.
The light OP that sends from COB module light source center O point, after lower surface 221 refractions through middle collector lens 22, incide on the mid point Q of a ring grain micro-structural section profile line of upper surface convex surface, after superrefraction, its emergent ray QR is parallel to optical axis OZ collimation and penetrates; The light OP1 that sends from COB module light source center O point, after lower surface 221 refractions through middle collector lens 22, incide the left hand edge point Q1 position of this ring grain micro-structural section profile line on the upper surface convex surface, after superrefraction, the angle of its emergent ray Q1R1 and emergent ray QR is-Δ α angle; The light OP2 that sends from COB module light source center O point, after lower surface 221 refractions through middle collector lens 22, incide the right hand edge point Q2 position of this ring grain micro-structural on the upper surface convex surface, after superrefraction, the angle of its emergent ray Q2R2 and emergent ray QR is+Δ α angle.So ± Δ α angle is the mixed light angle of this ring grain micro-structural.The upper surface of middle collector lens 22, the mixed light angle that its all ring grain micro-structural produces be all ± Δ α angle, therefore forms a beam angle after stack to be ± the uniform hot spot distribution of Δ α angular region.
Mixed light angle Δ α is the numerical aperture angle of the circular arc section profile line of ring grain micro-structural, and it also meets the condition of (formula 1):
, condition accordingly, can calculate the circular arc section profile curvature of a curve radius of all ring grain micro-structurals.
As Figure 10, Figure 11 and shown in Figure 12, preferred COB module LED light source is the undersized LED light source that only has 4 chips here, and the maximum gauge of preferred lens flange 23 is 23.9 millimeters, and the effective aperture of horn mouth exiting surface 213 is 20 millimeters; The numerical aperture angle Δ α of preferred each ring grain micro-structural circular arc section profile line=3 °; At spot position, the focus of lens is when COB module LED light source center O point when lens, and the distance of lens bottom surface distance C OB module LED light source base bottom surface is 4.5 millimeters, and at this time the beam angle full-shape is about 6.9 °; When lens moved towards COB module LED light source direction, beam angle slowly became greatly, and distance C OB module LED light source pedestal lower surface is 0 millimeter when the lens bottom surface, and when namely printed circuit board (PCB) was close in the lens bottom, the beam angle full-shape was 34 °; When lens move down 4 millimeters again, LED light source extend in the indent face of cylinder of lens, and while soon pressing close to the bottom surface 221 of middle collector lens, the beam angle full-shape can reach 75 °.
Embodiment 3: as shown in Figure 13 and Figure 14, described secondary optical lens is by the 3rd collector lens 32 of centre, and the 3rd total reflection prism 31 of outer ring and flange 3 form; The 3rd collector lens be included as plane lower surface 321, be the upper surface 322 of microlens array surface; The bell mouth shape exiting surface 313 that the 3rd total reflection prism 31 is included as the inboard incidence surface 311 on the indent face of cylinder, tilts for the outside fully reflecting surface 312 of prismatic scale and shell face and upper end.Described the 3rd total reflection prism 31 has identical focal length with the 3rd collector lens 32.
As shown in figure 15, in the 3rd middle collector lens 32 upper surface microlens arrays 322, the mixed light principle of the single ring grain micro-structural of the middle collector lens upper surface 222 of its single lenticular mixed light principle and embodiment 2 is similar.
The light OP that sends from COB module light source center O point, after lower surface 321 refractions through middle collector lens 32, incide on the mid point Q of a lenticule section profile line of upper surface convex surface 322, after superrefraction, its emergent ray QR is parallel to optical axis OZ collimation and penetrates; The light OP1 that sends from COB module light source center O point, after lower surface 321 refractions through middle collector lens 32, incide the left hand edge point Q1 position of this lenticule section profile line on upper surface convex surface 322, after superrefraction, the angle of its emergent ray Q1R1 and emergent ray QR is-Δ δ angle; The light OP2 that sends from COB module light source center O point, after lower surface 321 refractions through middle collector lens 32, incide the right hand edge point Q2 position of this lenticule section profile line on upper surface convex surface 322, after superrefraction, the angle of its emergent ray Q2R2 and emergent ray QR is+Δ δ angle.This Δ δ angle is this lenticular mixed light angle so.The upper surface 322 of middle collector lens 32, the mixed light angle that its all lenticule produces be all+Δ δ angle, therefore forms a beam angle after stack to be+the uniform light spots distribution of Δ δ angular region.
Mixed light angle Δ δ is the numerical aperture angle of lenticular circular arc section profile line, and it also meets the condition of (formula 1):
,, according to this condition, can calculate all lenticular circular arc section profile curvature of a curve radiuses.
In the present embodiment, on its outside fully reflecting surface 312, the mixed light principle of single scale and shell face T1-T-T2 as shown in figure 16.The light OS that sends from COB module LED light source center O point, after 311 refractions of the indent face of cylinder, on the mid point T of the section profile line of certain scale and shell outside inciding on fully reflecting surface 312, reenter after total reflection and be mapped on the horn mouth exiting surface 313 that top tilts in the position that U order, refraction is exported with collimated ray UV along the direction that is parallel to optical axis OZ afterwards.The light OS1 that sends from COB module LED light source center O point, after 311 refractions of the indent face of cylinder, incide the T1 position, edge, top of this scale and shell section profile line on the fully reflecting surface 312 of the outside, reenter after total reflection on the horn mouth exiting surface that is mapped to the top inclination in the position that the right U1 is ordered, after refraction, with light U1V1 output, the angle of light U1V1 and light UV is Δ δ angle.The light OS2 that sends from COB module LED light source center O point in addition, after 311 refractions of the indent face of cylinder, incide the T2 position, following edge of this scale and shell section profile line on the fully reflecting surface 312 of the outside, reenter after total reflection on the horn mouth exiting surface 313 that is mapped to the top inclination in the position that left side U2 is ordered, after refraction, with light U2V2 output, the angle of light U2V2 and light UV is-Δ δ angle.So-called+Δ δ angle, be the mixed light angle that this scale and shell produces.Suppose that the outside local radius of curvature of scale and shell T1-T-T2 section profile line on face 312 that is all-trans is rt, scale and shell is of a size of d, and its accompanying total reflection parabola basal plane radius of curvature at this place is rf, and the mixed light angle meets the following conditions so:
(formula 2)
According to the outboard wheel profile of the total reflection lens of when collimation design, and required mixed light angle delta δ, just can draw the section profile curvature of a curve radius value of needed each piece scale and shell according to (formula 2).
As Figure 17, Figure 18 and shown in Figure 19, computer simulation and photometric analysis when the focus of lens is positioned at the center O point position of COB module LED light source.Suppose that light source is the GW5SMC of the 4W of Sharp, the luminous flux of LED is 300 lumens, and the lens bottom is 5.8mm from the height of printed circuit board (PCB), and ray tracing at this moment as shown in figure 15, can find out that emergent ray is more concentrated.Figure 16 is light spot shape and the Illumination Distribution of 1 meter distant place, can see that glossing up is rounded, spot size is about 300 millimeters, the inhomogeneous color spot that does not occur in hot spot and the picture of the chip array of a little, and the illumination curve of hot spot the right and lower position is Gaussian Profile.Figure 17 is that the far field angle of light intensity distributes, i.e. distribution curve flux, and the beam angle width of half position of peak light intensity is ± 6.5 °, namely full-shape is 13 °.
Claims (10)
1. the LED light source with COB module, comprise COB module light source and secondary optical lens, it is characterized in that: the face that has at least of described secondary optical lens is the micro structure array surface.
2. a kind of LED light source with COB module according to claim 1, it is characterized in that: described micro structure array is the scale and shell face of fly's eye microlens array or ring grain lens arra or prismatic.
3. a kind of LED light source with COB module according to claim 1 and 2, it is characterized in that: the distance between described COB module light source and secondary optical lens is adjustable continuously.
4. a kind of LED light source with COB module according to claim 3 is characterized in that: the flange that the aspheric surface that described secondary optical lens is protruded by the fly's eye microlens array that is additional to the first collector lens bottom surface, upper surface and outer ring are used for assembling forms.
5. a kind of LED light source with COB module according to claim 4 is characterized in that: described fly's eye microlens array can be that hexagonal array or square are arranged or annular array, and each lenticular size is between 0.5 millimeter to 2 millimeters.
6. a kind of LED light source with COB module according to claim 5 is characterized in that: the scope of the beam angle Δ α of light after the aspheric surface convex lens are assembled is between 3 °≤Δ α≤10 °.
7. a kind of LED light source with COB module according to claim 3 is characterized in that: described secondary optical lens is comprised of second total reflection prism (21) of the second collector lens (22) in the middle of lens, outer ring and the flange (3) that is positioned at outside the second total reflection prism (21);
The lower surface (221) of the second collector lens (22) is plane, and upper surface convex surface (222) is ring grain micro-structural face;
The second total reflection prism (21) is included as the incidence surface (211) on the indent face of cylinder, outermost fully reflecting surface (212) and is the inclined surface of output face (213), and the upper end of described inclined surface (213) is the horn mouth shape.
8. a kind of LED light source with COB module according to claim 7, it is characterized in that: described the second total reflection prism (21) and the second collector lens (22) have identical equivalent focal length.
9. a kind of LED light source with COB module according to claim 3 is characterized in that: described secondary optical lens is by the 3rd collector lens (32) of centre, and the 3rd total reflection prism (31) of outer ring and flange (3) form; The 3rd collector lens be included as plane lower surface (321), be the upper surface of microlens array surface (322); The bell mouth shape exiting surface (313) that the 3rd total reflection prism (31) is included as the inboard incidence surface (311) on the indent face of cylinder, tilts for the outside fully reflecting surface (312) of prismatic scale and shell face and upper end.
10. a kind of LED light source with COB module according to claim 9, it is characterized in that: described the 3rd total reflection prism (31) has identical focal length with the 3rd collector lens (32).
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| CN104930379A (en) * | 2015-06-26 | 2015-09-23 | 深圳市爱图仕影像器材有限公司 | Lamp with variable focal lengths |
| WO2017166328A1 (en) * | 2016-03-31 | 2017-10-05 | 宁波亚茂光电股份有限公司 | Bowl-like led lamp |
| CN107859887A (en) * | 2017-11-07 | 2018-03-30 | 成都新柯力化工科技有限公司 | A kind of LED matrix cultivated for cordyceps sinensis |
| CN108132573A (en) * | 2018-01-15 | 2018-06-08 | 深圳奥比中光科技有限公司 | Floodlighting module |
| CN109654433A (en) * | 2019-01-24 | 2019-04-19 | 上海智汇电器有限公司 | Wireless charging LED straight panel lamp |
| CN110488535A (en) * | 2019-01-30 | 2019-11-22 | 友达光电股份有限公司 | Light source assembly and the backlight module for using it |
| CN112268231A (en) * | 2020-10-24 | 2021-01-26 | 中山火炬职业技术学院 | High-reliability COB light source module with variable beam angle |
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| CN112578593A (en) * | 2019-09-30 | 2021-03-30 | 宁波舜宇车载光学技术有限公司 | Illumination device, display, and illumination method |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104930379B (en) * | 2015-06-26 | 2017-05-03 | 深圳市爱图仕影像器材有限公司 | Lamp with variable focal lengths |
| CN104930379A (en) * | 2015-06-26 | 2015-09-23 | 深圳市爱图仕影像器材有限公司 | Lamp with variable focal lengths |
| WO2017166328A1 (en) * | 2016-03-31 | 2017-10-05 | 宁波亚茂光电股份有限公司 | Bowl-like led lamp |
| CN107859887A (en) * | 2017-11-07 | 2018-03-30 | 成都新柯力化工科技有限公司 | A kind of LED matrix cultivated for cordyceps sinensis |
| CN108132573A (en) * | 2018-01-15 | 2018-06-08 | 深圳奥比中光科技有限公司 | Floodlighting module |
| CN112567294A (en) * | 2018-08-16 | 2021-03-26 | 索尼公司 | Light source device and projection display device |
| CN109654433A (en) * | 2019-01-24 | 2019-04-19 | 上海智汇电器有限公司 | Wireless charging LED straight panel lamp |
| CN110488535A (en) * | 2019-01-30 | 2019-11-22 | 友达光电股份有限公司 | Light source assembly and the backlight module for using it |
| CN110488535B (en) * | 2019-01-30 | 2022-02-11 | 友达光电股份有限公司 | Light source assembly and backlight module using same |
| CN112578593A (en) * | 2019-09-30 | 2021-03-30 | 宁波舜宇车载光学技术有限公司 | Illumination device, display, and illumination method |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
| CN114766010A (en) * | 2019-12-09 | 2022-07-19 | 松下知识产权经营株式会社 | Light source device |
| CN112268231A (en) * | 2020-10-24 | 2021-01-26 | 中山火炬职业技术学院 | High-reliability COB light source module with variable beam angle |
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