CN1844988A - Assembled uniform area light source - Google Patents
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- CN1844988A CN1844988A CNA2006100021431A CN200610002143A CN1844988A CN 1844988 A CN1844988 A CN 1844988A CN A2006100021431 A CNA2006100021431 A CN A2006100021431A CN 200610002143 A CN200610002143 A CN 200610002143A CN 1844988 A CN1844988 A CN 1844988A
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Abstract
The invention discloses an assembled uniform surface light source, belonging to the packing technique of light-emitting diode. It is characterized in that: it is a surface light source formed by assembling several surface light source modules that based on light-emitting diode. Wherein, each surface light source module comprises light-emitting diode light source, and a light-average collimate optical device which can make the light of light-emitting diode light source, via reflect and/or refract to generate uniform luminance on the emit plane while the emit direction is parallel with the middle axis of light. The invention can attain better light uniformity with high efficiency, while it can be used as a back light source in the personal computer, vehicle navigation system, etc.
Description
Technical field
The present invention relates to a kind of assembled uniform area light source, belong to LED package and applied technical field based on light emitting diode.The present invention is applicable to the backlight of the liquid crystal indicator of installing in the equipment such as personal computer, Vehicular navigation system, cell-phone for example, also is applicable to common room lighting light fixture.
Background technology
The area source based on light emitting diode (LED) of being used widely at present, mainly contains two kinds of forms: sidewall coupled mode (side-light-type) and direct projection coupled mode (directly-under-light).
The sidewall coupled mode refers to certain mechanism of use the light that light emitting diode sends is coupled into light guide plate from the side, thereby forms uniform surface light source.Can be because outgoing and spillage of material and weaken gradually in the transmission course of light in light guide plate, therefore the area source of this form can not be done very greatly, otherwise its homogeneity can not be guaranteed.It is backlight that the area source of this form mainly is applied to the LCD of mobile phone, palm PC.Simultaneously, the manufacture craft of high-quality light guide plate is quite complicated, and its top efficiency is about 60%, thereby becomes the bottleneck of total system efficient.The data that disclose among the technology publishing documents TP29 of Lumileds Lighting company according to the U.S., the efficient of the area source of a kind of employing sidewall coupled mode based on large-power light-emitting diodes of the said firm is 50%, and wherein the leaded light efficient of light guide plate is about 60%.
The direct projection coupled mode refers to light emitting diode matrix directly is positioned over the light-emitting area below, takes the mode of direct projection luminous.The size of the area source of this form is unrestricted, has obtained in the large screen display field using widely.Yet this mechanism also just makes light-emitting area be difficult to realize good homogeneous, occurs speck, blackening easily, even makes luminous point imaging on screen.The general scheme that solves is to use one or more layers light-diffusing film (diffuser sheet) or astigmatism body (bulk diffuser) to make its homogenising, and covers the luminous point imaging.But this can cause scattering of light to absorb, and then overall system efficiency is reduced; This phenomenon is even more serious when using the multilayer light-diffusing film.
At this situation, U.S. Pat 20040080938 A1 propose to use the common uniformly light-emitting that forms system's realization direct projection coupled mode of product B EF film of reflector and Minnesota Mining and Manufacturing Company, yet this scheme can form the virtual image of led light source on the bright dipping plane, and then still is difficult to realize uniformly light-emitting under high efficiency prerequisite; According to our experimental result, use the BEF film can make system effectiveness be reduced to 60% in this case simultaneously.
U.S. Pat 20050013131A1 and Chinese utility model patent 03264908.8 are mentioned respectively and cover the purpose that reflecting plate is realized even bright dipping directly over light sources, but analog result from the former disclosure, its homogeneity makes moderate progress, but still is not less than 40%.Simultaneously, this method light mainly concentrate on after the outgoing with the bigger direction of bright dipping plane normal angle on, and be unfavorable for practicality.
In sum, existing area source is difficult to solve the contradiction that homogeneity and efficient are difficult to get both, and especially for the direct projection coupling scheme that are applied to the large tracts of land area source, homogeneity can only obtain by sacrificing efficient.Based on this, the present invention proposes a kind of area source structure of using the direct projection coupling scheme, can obtain good light-emitting uniformity under high efficiency prerequisite.
Summary of the invention
The purpose of this invention is to provide a kind of based on light emitting diode by the assembled area source of modular surface light source, it has than higher energy efficiency, the having good uniformity of bright dipping simultaneously.Its reason is that the present invention adopts the method for controlling light one by one to realize uniformly light-emitting, rather than adopt the method for traditional scattering, therefore every light is all projected in the effective coverage, and can shorten light path as much as possible to reduce absorbed.
The invention is characterized in: it is based on the assembled area source of the modular surface light source level of light emitting diode by polylith, described each piece modular surface light source contains, LED source, with the light that described LED source is sent through superrefraction and/or the reflection after, on exit plane, produce approximate uniform illumination, and the direction of the outgoing even light-collimating optics mechanism parallel with the axis of light.
Even optical mechanism and collimation mechanism are contained in described even light-collimating optics mechanism.
Described even optical mechanism is a dish-like even optical lens, and the lower surface of this dish-like even optical lens is a column type cavity that can cover light source, and upper surface is a horizontal surface; Light, from the upper surface outgoing, is radiated on the exit facet after the refraction of process lower surface and the reflection of side uniformly from the lower surface incident of described dish-like even optical lens.
Described even optical mechanism is the fully reflecting surface of a half reflection plate and placement and light source side, and on exit facet, another part light reflects back uniform irradiation on exit facet through this described fully reflecting surface to a part of light through uniform irradiation after this half reflection plate transmission.
Described collimation mechanism is a collimation panel, and its center is convex lens, is one group of prism that the cross section is a congruent triangles all around, and this prism is projected as one group of concentric circles on the plane orthogonal of axis.
Described collimation mechanism is a Fresnel lens, and even optical mechanism is positioned near the focal position or focal position of described Fresnel lens.
Described collimation mechanism is cylindrical mirror group and the non-ball cylindrical mirror group that quadrature is placed, and even optical lens is positioned near the focal position or focal position of described cylindrical mirror group or non-ball cylindrical mirror group.
Described collimation mechanism is two BEF films, and these two BEF film quadratures are placed.
Described even light-collimating optics mechanism is the even light-collimation lens of an one, uniform irradiation was on the exit facet of this even light-collimation lens after the light process that described LED source is sent was somebody's turn to do the refraction of sparing light-collimation lens plane of incidence, the exit facet of described even light-collimation lens makes the light of outgoing obtain collimation, and described LED source is encapsulated in the lens.
Described even light-collimating optics mechanism is even light-collimation lens of matrix, its inside surface is a column type, the middle part of its outside surface is a dome-type, be the skewed slot type all around, the light incident that described LED source is sent falls that this falls the column type inside surface of even light-collimation lens of matrix, after the refraction of this inside surface, incident is uniformly fallen on the outside surface, obtains collimation through the refraction once more of outside surface.
Described light emitting diode is encapsulated in the lens.
Described modular surface light source be shaped as regular polygon.
Evidence, the area source that the present invention proposes can make that the outgoing of light is even and efficient is high, have reached its intended purposes.
Description of drawings
Fig. 1 is a system function module synoptic diagram based on the modular surface light source of light emitting diode.
Fig. 2 is the cut-open view and the index path of the modular surface light source of embodiment 1 use.
Fig. 3 is the three-dimensional view of the assembled area source of the modular surface light source of embodiment 1.
Fig. 4 is the near field Illumination Distribution simulation synoptic diagram of embodiment 1.
Fig. 5 is the far field Luminance Distribution simulation synoptic diagram of embodiment 1.
Fig. 6 is the cut-open view and the index path of the modular surface light source of embodiment 2 uses.
Fig. 7 is the vertical view of embodiment 3.
Fig. 8 is the cut-open view and the index path of the modular surface light source of embodiment 3.
Fig. 9 is the vertical view of the collimation mechanism in the modular surface light source of embodiment 3.
Figure 10 is the cut-open view and the index path as the modular surface light source of collimation mechanism of the use Fresnel lens of embodiment 4.
Figure 11 is the use cylindrical mirror group of embodiment 5 or the non-ball cylindrical mirror group cut-open view as the modular surface light source of collimation mechanism.
Figure 12 is that the product B EF film of use 3M company of embodiment 6 is as the cut-open view of the modular surface light source of collimation mechanism.
Figure 13 is that use half reflection plate, reflection bottom face and the reflective side walls of embodiment 7 forms cut-open view and the index path of a system as the modular surface light source of even optical mechanism.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention is achieved in that
Fig. 1 is the system function module synoptic diagram of a modular surface light source.The 1st, even optical mechanism has wherein encapsulated one piece or many pieces of led light sources.
Because LED is a Lambertian source, therefore the light that sends from led light source can be expressed as in the Luminance Distribution of space formation:
I(θ)＝I
0·cosθ
Wherein I (θ) is a spatial brightness; θ is the angle of direction of observation and LED optical axis; I
0Be center brightness.
If without the processing of optical system, so this spatial brightness is distributed in the Illumination Distribution that forms on the light exit plane 3 of modular surface light source and can expresses with following formula:
Wherein L (r) is a brightness value, and r is the radius of the investigation point on the light exit plane 3, and h is the vertical range of led light source to the light exit plane.
Its brightness value decay rapidly radially as can be seen can not realize evenly.
Therefore, the effect of even optical mechanism is that the light that will be sent by LED source redirects, and makes it produce approximate uniform illumination on the light exit plane 3 of modular surface light source, even light is evenly distributed on the described smooth exit plane 3.
The 2nd, collimation mechanism, its effect be will the even light of irradiation process thereon light redirect, thereby light is concentrated near the light exit direction parallel with axis 4, thereby guaranteed the brightness of area source on illumination direction.
Two mechanisms that above-mentioned even optical mechanism and collimation mechanism are not necessarily separated utilize optical element to spare light and collimation as long as can reach.
Below specify several specific embodiment of the present invention.
The assembled area source of embodiment 1 based on light emitting diode, its modular surface light source comprises an even light-collimation mechanism, promptly even light-collimation lens 91, as shown in Figure 2.In this embodiment, even optical mechanism and collimation mechanism are one, promptly use and should spare the effect that light-collimation lens 91 has replaced even optical mechanism and collimation mechanism.
Fig. 2 is the sectional view and the index path of this modular surface light source.LED source 93 is used lens 92 encapsulation.The light that sends from LED source 93 incides even light-collimation lens 91 after lens 92 refractions once.Curved surface 94 makes with the smaller light of axis 90 angles and is evenly distributed on the sphere 95, and through sphere 95 collimation outgoing; The effect of curved surface 96,97 is to make light be evenly distributed on the curved surface 99 of upper surface 98 and stepped cross-section.The angle that incides the light of curved surface 98 and axis 90 is less than 10 degree, and it is bigger to incide light and axis 90 angles of curved surface 99 of stepped cross-section, through obtaining collimating after curved surface 99 refractions.Final total effect be make light on exit plane 100 evenly the angle of distribution and shooting angle and axis spend less than 10, promptly collimated substantially.Exit plane 100 among the figure is one to be narrated and the plane of structure for convenience, and in actual applications, exit plane 100 can be a transparent panel, also can be scattering film and scatterer, also can not be any entity.Only use a LED source 93 in the present embodiment, just for convenience of description, do not limited the possibility of using many pieces of LED source.
Fig. 3 is the three-dimensional view by the assembled area source of this modular surface light source, and 110 is modular surface light sources, and its vertical view is a regular hexagon.7 modular surface light source levels are assemblied to form a large-area area source.Using 7 identical regular hexagon modular surface light sources just for convenience of description, is not the restriction to the quantity and the shape of modular surface light source.
Fig. 4 be present embodiment at the illumination simulation drawing that goes out on the optical plane, can see its homogeneity greater than 80%, Fig. 5 is the far field luminance graph of present embodiment, can see its collimation effect fine, divergence half-angle less than 5 the degree.
Embodiment 2
The assembled area source based on light emitting diode of embodiment 2, its modular surface light source are another even light-collimation mechanism, promptly even light-collimation lens set 120 and 122, as shown in Figure 6.Here even light-collimation lens set 120 and 122 has replaced the effect of even optical mechanism and collimation mechanism.The light that sends from LED source 121 is through a series of refractions and the reflection on the surface of lens combination 120 and 122, evenly and the shining on the light exit plane 123 of basic collimation.This even light-collimation mechanism has different forms with embodiment 1, but principle of work is similar, does not remake here and gives unnecessary details.
Embodiment 2 based on light emitting diode by the assembled area source of modular surface light source, its vertical view is as shown in Figure 7.9 is modular surface light sources, and its vertical view is a regular hexagon.7 modular surface light source levels are assemblied to form a large-area area source.Using 7 identical regular hexagon modular surface light sources just for convenience of description, is not the restriction to the quantity and the shape of modular surface light source.
Fig. 8 is the sectional view and the index path of the modular surface light source of embodiment 3.
Even optical mechanism uses an even optical lens 23 to realize.The effect of spherical lens 22 is encapsulated LED light sources 20.The effect of even optical lens 23 is that the light that will be sent by LED source 20 is after globe lens 22 refractions, redirect again, in even optical lens 23 through superrefraction or a series of refraction and total reflection, make it on the light exit plane 12 of modular surface light source, produce approximate uniform illumination, even light is evenly distributed on the described smooth exit plane 12.Only use a LED source 20 in the present embodiment, just for convenience of description, do not limited the possibility of using many pieces of LED source.
Collimation mechanism is a collimation panel 24, and its upper surface is whole modular surface light source light exit plane 12.The cross section curve of the curved surface 25 at center is one section circular arc, and its center of circle is on the axis 13 of module; 26 is one group of prism, its cross section is the triangle of one group of congruence, its with axis 13 plane orthogonal on be projected as one group of concentric circles, the center is in the geometric center 14 of light exit plane 12, just LED source 20 is at the projected position of light exit plane 12, as shown in Figure 9.Because its cross section is the triangle of one group of congruence, is that example illustrates its concrete parameter and principle of work with one of them only below.The straight line of face 27 correspondence on the cross section and the angle of axis 13 are 10 degree, and the straight line of face 28 correspondence on the cross section and the angle of axis are 30 degree.As shown in Figure 8, light 41 obtains collimation to a certain degree in curved surface 25 generation refractions; Light 42 incides curved surface 27 and reflects, and incides curved surface 28 then and total reflection takes place and obtain collimating outgoing.Light is concentrated near axis 13 directions, thereby guaranteed the brightness on the illuminated by surface light source direction.
System's sidewall 29 and bottom surface 30 all are reflector layers.Its specific implementation can be used the method for pasting reflectance coating or evaporation reflectance coating, perhaps other method, and the present invention does not limit.The purpose of reflector layer 29,30 is to utilize the light that is not mapped to collimation mechanism 24 that sends from even optical lens 23, makes it to be able to outgoing, to improve system effectiveness.
Embodiment 4
The assembled area source based on light emitting diode of embodiment 4 is that with the difference of embodiment 3 its modular surface light source has used different collimation mechanism, stresses different parts here, and identical part is omitted repeat specification.
As shown in figure 10, the collimation mechanism of using in the present embodiment is Fresnel (Fresnel) lens 51, its effect is equivalent to a spherical mirror, even optical lens 23 is positioned on the focus of Fresnel lens or near the focus, the light of the even light of process will obtain collimation to a certain degree, guarantee the brightness of area source on illumination direction, and then realize uniform area light source.
Embodiment 5
The assembled area source of embodiment 5 based on light emitting diode, be that with the difference of embodiment 3 and embodiment 4 its modular surface light source has used the third different collimation mechanism, here stress different parts, identical part is omitted repeat specification.
As shown in figure 11, cylindrical mirror group and non-ball cylindrical mirror group that the collimation mechanism of using in the present embodiment is placed as quadrature, 61 is non-ball cylindrical mirror groups among the figure, the 62nd, the cylindrical mirror group, the two position is interchangeable, and its effect is similar to a spherical mirror, even optical lens 23 is positioned on the focus of cylindrical mirror group or non-ball cylindrical mirror group or near the focus, the light of the even light of process will obtain collimation to a certain degree, guarantee the brightness of area source on illumination direction, and then realize uniform area light source.
Embodiment 6
The assembled area source of embodiment 6 based on light emitting diode, be that with the difference of embodiment 3, embodiment 4 and embodiment 5 its modular surface light source has used the 4th kind of different collimation mechanism, here stress different parts, identical part is omitted repeat specification.
As shown in figure 12, the collimation mechanism of using in the present embodiment is the prism of one group of solid matter on its microcosmic as the product B EF film (Brightnessenhancement film) 71 of Minnesota Mining and Manufacturing Company.Two BEF film quadratures are placed, can play with the effect of the bigger light collimation of axis angle, therefore improved the brightness of area source on illumination direction to a certain extent, and then realized uniform area light source.
Embodiment 7
The assembled area source based on light emitting diode of embodiment 7 is that with the difference of embodiment 3 its modular surface light source has used different even optical mechanisms, stresses different parts here, and identical part is omitted repeat specification.
As shown in figure 13, the even optical mechanism that uses in the present embodiment is half reflection plate 81, when light incides on it, has a certain proportion of light to obtain transmission, and remaining light then obtains reflection, and its projection ratio can be determined when fabrication and processing half reflection plate as required.As Figure 13, the more intense light in center incides on the half reflection plate 81, part transmission and form illumination at light exit surface 82, all the other reflex to bottom reflection layer 83 and reflect once more, to light exit surface 82 formation illumination, therefore, half reflection plate 81 transmittivities and curve form reasonable in design, can make light project light exit surface 82 uniformly, and pass through collimation mechanism and form uniform area light source.
Embodiment 8
The assembled area source of embodiment 8 based on light emitting diode, the even optical mechanism of its modular surface light source uses the half reflection plate, and collimation mechanism is used Fresnel lens, and by the agency of is clear for its each several part principle, so no longer repeat specification.
Embodiment 8
The assembled area source of embodiment 9 based on light emitting diode, the even optical mechanism of its modular surface light source uses the half reflection plate, and collimation mechanism is used cylindrical mirror group or non-ball cylindrical mirror group, and by the agency of is clear for its each several part principle, so no longer repeat specification.
The assembled area source of embodiment 10 based on light emitting diode, the even optical mechanism of its modular surface light source uses the half reflection plate, and collimation mechanism is used the BEF film, and by the agency of is clear for its each several part principle, so no longer repeat specification.
Can realize the present invention and not leave the spirit and scope of the present invention or essential characteristic that current disclosed example only is its preferred embodiment with other form.
Claims (12)
1, a kind of area source based on light emitting diode, it is characterized in that, it is based on the assembled area source of the modular surface light source level of light emitting diode by polylith, described each piece modular surface light source contains, LED source, with the light that described LED source is sent after superrefraction and/or reflection, on exit plane, produce approximate uniform illumination, and the direction of the outgoing even light-collimating optics mechanism parallel with the axis of light.
2, the area source based on light emitting diode as claimed in claim 1 is characterized in that, even optical mechanism and collimation mechanism are contained in described even light-collimating optics mechanism.
3, the area source based on light emitting diode as claimed in claim 2 is characterized in that, described even optical mechanism is a dish-like even optical lens, and the lower surface of this dish-like even optical lens is a column type cavity that can cover light source, and upper surface is a horizontal surface; Light, from the upper surface outgoing, is radiated on the exit facet after the refraction of process lower surface and the reflection of side uniformly from the lower surface incident of described dish-like even optical lens.
4, the area source based on light emitting diode as claimed in claim 2, it is characterized in that, described even optical mechanism is a half reflection plate, fully reflecting surface with placement and light source side, on exit facet, another part light reflects back uniform irradiation on exit facet through this described fully reflecting surface to part light through uniform irradiation after this half reflection plate transmission.
5, the described area source of claim 2 based on light emitting diode, it is characterized in that described collimation mechanism is a collimation panel, its center is convex lens, be one group of prism that the cross section is a congruent triangles all around, this prism is projected as one group of concentric circles on the plane orthogonal of axis.
6, the area source based on light emitting diode as claimed in claim 2 is characterized in that, described collimation mechanism is a Fresnel lens, and even optical mechanism is positioned near the focal position or focal position of described Fresnel lens.
7, the area source based on light emitting diode as claimed in claim 2, it is characterized in that, described collimation mechanism is cylindrical mirror group and the non-ball cylindrical mirror group that quadrature is placed, and even optical lens is positioned near the focal position or focal position of described cylindrical mirror group or non-ball cylindrical mirror group.
8, the area source based on light emitting diode as claimed in claim 2 is characterized in that, described collimation mechanism is two BEF films, and these two BEF film quadratures are placed.
9, the area source based on light emitting diode as claimed in claim 1, it is characterized in that, described even light-collimating optics mechanism is the even light-collimation lens of an one, uniform irradiation is on the exit facet of this even light-collimation lens after the light process refraction of this even light-collimation lens plane of incidence that described LED source is sent, the exit facet of described even light-collimation lens makes the light of outgoing obtain collimation, and described LED source is encapsulated in the lens.
10, the area source based on light emitting diode as claimed in claim 9, it is characterized in that, described even light-collimating optics mechanism is even light-collimation lens of matrix, its inside surface is a column type, and the middle part of its outside surface is a dome-type, is the skewed slot type all around, the light incident that described LED source is sent falls that this falls the column type inside surface of even light-collimation lens of matrix, after the refraction of this inside surface, incident is uniformly fallen on the outside surface, obtains collimation through the refraction once more of outside surface.
11, a kind of area source based on light emitting diode as claimed in claim 1 is characterized in that, described light emitting diode is encapsulated in the lens.
12, the area source based on light emitting diode as claimed in claim 1 is characterized in that, described modular surface light source be shaped as regular polygon.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100021431A CN100483214C (en) | 2006-01-19 | 2006-01-19 | Assembled uniform area light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100021431A CN100483214C (en) | 2006-01-19 | 2006-01-19 | Assembled uniform area light source |
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|---|---|---|---|
| CN2008101800545A Division CN101430072B (en) | 2006-01-19 | 2006-01-19 | Assembled uniform surface light source |
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| CN1844988A true CN1844988A (en) | 2006-10-11 |
| CN100483214C CN100483214C (en) | 2009-04-29 |
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| CNB2006100021431A Expired - Fee Related CN100483214C (en) | 2006-01-19 | 2006-01-19 | Assembled uniform area light source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626055B (en) * | 2008-07-09 | 2011-03-16 | 立景光电股份有限公司 | Light-emitting diode package |
| CN101725901B (en) * | 2008-10-24 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| CN104676472A (en) * | 2013-11-29 | 2015-06-03 | 海洋王（东莞）照明科技有限公司 | Lens assembly and lamp provided with same |
| CN105579769A (en) * | 2013-06-21 | 2016-05-11 | 微软技术许可有限责任公司 | Hybrid concentrator for a backlight |
| US9810943B2 (en) | 2008-01-08 | 2017-11-07 | Dolby Laboratories Licensing Corporation | Parallax reduction |
| CN108709159A (en) * | 2018-08-16 | 2018-10-26 | 浙江彩丞照明科技有限公司 | It is a kind of that there are the aspherics lens for cutting photo structure |
| CN109483876A (en) * | 2018-12-28 | 2019-03-19 | 精唯信诚（北京）科技有限公司 | A kind of light source module group and 3D printer |
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2006
- 2006-01-19 CN CNB2006100021431A patent/CN100483214C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9810943B2 (en) | 2008-01-08 | 2017-11-07 | Dolby Laboratories Licensing Corporation | Parallax reduction |
| CN109901326A (en) * | 2008-01-08 | 2019-06-18 | 杜比实验室特许公司 | Parallax reduces |
| CN101626055B (en) * | 2008-07-09 | 2011-03-16 | 立景光电股份有限公司 | Light-emitting diode package |
| CN101725901B (en) * | 2008-10-24 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| CN105579769A (en) * | 2013-06-21 | 2016-05-11 | 微软技术许可有限责任公司 | Hybrid concentrator for a backlight |
| CN104676472A (en) * | 2013-11-29 | 2015-06-03 | 海洋王（东莞）照明科技有限公司 | Lens assembly and lamp provided with same |
| CN104676472B (en) * | 2013-11-29 | 2020-04-24 | 海洋王（东莞）照明科技有限公司 | Lens assembly and lamp applying same |
| CN108709159A (en) * | 2018-08-16 | 2018-10-26 | 浙江彩丞照明科技有限公司 | It is a kind of that there are the aspherics lens for cutting photo structure |
| CN109483876A (en) * | 2018-12-28 | 2019-03-19 | 精唯信诚（北京）科技有限公司 | A kind of light source module group and 3D printer |
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| CN100483214C (en) | 2009-04-29 |
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Granted publication date: 20090429 Termination date: 20200119 |