CN104235755A - Lens and lighting device with same - Google Patents
Lens and lighting device with same Download PDFInfo
- Publication number
- CN104235755A CN104235755A CN201310226429.8A CN201310226429A CN104235755A CN 104235755 A CN104235755 A CN 104235755A CN 201310226429 A CN201310226429 A CN 201310226429A CN 104235755 A CN104235755 A CN 104235755A
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- Prior art keywords
- lens
- sub
- crest
- surface structure
- trough
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
-
- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lenses (AREA)
Abstract
The invention relates to a lens used for a lighting device. The lens comprises two auxiliary lenses which are mutually oppositely arranged, each auxiliary lens comprises two mutually opposite surfaces, at least one surface is designed to be a wavy surface structure, the two auxiliary lenses can mutually oppositely move between a first opposite position and a second opposite position, and parallel beams from a light source of the lighting device can achieve incidence through one auxiliary lens and achieve outgoing through the other auxiliary lens at the first opposite position to generate parallel beams and can achieve incidence through one auxiliary lens and achieve outgoing through the other auxiliary lens at the second opposite position to generate non-parallel beams. Besides, the invention further relates to the lighting device.
Description
Technical field
The present invention relates to a kind of lens for lighting device and there is the lighting device of these lens.
Background technology
LED illumination technology because its luminous efficiency is high, energy consumption is low and the advantage of greening and environmental protection and more and more by people are paid close attention to, and is widely applied in various types of lighting device.But, need the light to LED chip is launched to carry out secondary optics process, to meet different lighting demands.Usually need for LED chip is equipped with custom-designed lens, thus obtain different beam angles, to meet predetermined requirement.Make thus lighting device obtain such as can vertically, horizontal direction or the Light distribation that simultaneously changes in the two directions.
For this reason, propose a solution in the prior art, this solution is by regulating the distance between light source and optical unit, change the angle of light beam, make this angle narrow or broaden, thus change Light distribation, make Light distribation become thus and concentrate or disperse.Although this solution can regulate Light distribation to a certain extent, but when the distance between lens and light source is relatively far away, the light beam part that light source is launched without optical unit outgoing, may it reduce the illumination efficiency of the lighting device of the application program.
In another solution of prior art, propose by using zoom system, pancreatic system, after focusing to the light beam from light source, and the focal length changing this zoom system, pancreatic system is again to change the angle of this light beam, thus reaches the photodistributed object regulating light beam.But the cost of the program is higher, and optical efficiency is also lower.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of lens for lighting device, these lens can easily change the focus condition of the light beam from light source, and can change the angle of light beam, thus realize the change of the exit direction of light beam, to obtain different Light distribation.In addition, the invention allows for a kind of lighting device with the lens of the above-mentioned type.
First object of the present invention is realized by a kind of lens for lighting device, namely these lens comprise two sub-lens be arranged opposite to each other, wherein sub-lens has two surfaces opposite to each other respectively, wherein at least one surface design of each sub-lens becomes wavy surface structure, two sub-lens can move relative between the first relative position and the second relative position each other in this wise, make collimated light beam from the light source of lighting device when the first relative position through a sub-lens entrance and after another sub-lens outgoing, produce collimated light beam and at the second relative position time after another sub-lens outgoing, produce non-parallel beam through a sub-lens entrance.In design of the present invention, by changing the shooting angle of the light that light source sends at the side of the optical axis perpendicular to the light source relative position adjusted upward between two sub-lens, thus the parallel rays from light source is adjusted to parallel rays or focused ray or divergent rays, and then obtain different photodistributed possibilities.
Propose according to the present invention, wavy surface structure has at least one crest tactic and at least one trough on first direction or the second direction vertical with first direction, spacing between adjacent crest and trough is 0 to λ/2, wherein, sub-lens is relative movement in this wise each other, make the tactic in a first direction crest on a sub-lens and trough offseting in a first direction in the distance of the tactic crest of first direction and trough 0 to λ/2 relative to the wavy surface structure on another sub-lens, or make the tactic in a second direction crest on a sub-lens and trough offseting in a second direction with the distance of 0 to λ/2 at the tactic crest of second direction and trough relative to the wavy surface structure on another sub-lens.By the relativity shift in a first direction or between the sub-lens that second direction realizes, the possibility of the light beam parallel rays of incidence being adjusted to other angles can be realized, thus reach the photodistributed object changing the light exported.
Propose further according to the present invention, in the second relative position, the trough of the crest of the wavy surface structure of a sub-lens and the wavy surface structure of another sub-lens is positioned opposite.According to such design, the optical texture be made up of sub-lens has the material thickness of uniformity, and the air gap with uniform thickness can be formed between sub-lens, thus ensure that the outgoing equally abreast after passing through according to lens of the present invention of the light of parallel incidence, this results in a kind of distribution situation in adjustable Light distribation.
Propose according to the present invention, in the first relative position, the crest of the crest of the wavy surface structure of a sub-lens and the wavy surface structure of another sub-lens is positioned opposite.In this first relative position, the crest of a sub-lens is relative with the crest of another sub-lens, and by such structural design, by changing the material thickness of sub-lens entirety or changing the thickness of the air gap between sub-lens, and make incident parallel rays change the angle of its light beam, thus form the another kind distribution in adjustable Light distribation.
Preferably, a surface of sub-lens is formed with wavy surface structure and another surface design becomes smooth surface.According to the program, after the air gap through thickness different between sub-lens or the sub-lens of spending after difference, incident parallel rays can change the angle of its light beam, thus realize changing the photodistributed of emergent light may.
Preferably, sub-lens is arranged opposite to each other as making the surface with wavy surface structure be arranged opposite to each other, and wherein, the crest of wavy surface structure and trough are in first direction or the arrangement of second party upstream sequence.Because wavelike structure is designed to positioned opposite, when first direction or second direction relative movement sub-lens, the air gap with uneven gauge can be formed between sub-lens, and the beam angle of the light of outgoing can be changed at first direction or second direction, reach and change photodistributed object.
Preferably, sub-lens is arranged opposite to each other as making the described surface with wavy surface structure arrange away from each other, and wherein, the crest of wavy surface structure and trough are in first direction or the arrangement of second party upstream sequence.According to such design, along with the relative movement of sub-lens, can be combined with each other by the peak structure be distributed on different sub-lens the micro lens being formed and have such as oval cross section, can change the beam angle of the light of outgoing thus.
Preferably, two surfaces of sub-lens have wavy surface structure respectively, wherein, the crest of the wavy surface structure on a surface of same sub-lens and/or trough are arranged perpendicular to the crest of wavy surface structure on the other surface and/or trough.In present design, two sub-lens relative movements on first direction or second direction can be made, thus change the beam angle of light relative to first direction or second direction of outgoing, and two sub-lens relative movements in second direction or first direction can be made simultaneously, thus change the beam angle of light relative to second direction or first direction of outgoing, and then reach and change photodistributed possibility in a plurality of directions.
In a preferred design of the present invention, two sub-lens layout are that the crest of wavy surface structure facing with each other and/or trough are arranged perpendicular to the crest of wavy surface structure away from each other and/or trough.According to design of the present invention, due to the combination of two sub-lens, can realize after relative movement sub-lens, formed in multiple directions to photodistributed adjustment.
In a preferred design of the present invention, crest and trough are designed to the part in column face.Like this, by the relative movement of sub-lens, be arranged on crest on different sub-lens and trough structure can be combined with each other the micro lens being formed and there is the air gap of homogeneous material thickness or heterogeneous material thickness or uniform thickness or the air gap of uneven gauge, thus the object of the beam angle of the light changing outgoing can be reached.
In a preferred design of the present invention, sub-lens is made up of glass or plastics.The lens with this kind of material can have better optical effect, not only can meet the industrial protection standard of optical device, save cost, also can realize invention effect of the present invention preferably.
Another object of the present invention is realized by a kind of lighting device, comprise light source and be arranged on the collimating mirror in downstream of light direction of light source, lighting device also comprises the lens of the above-mentioned type, wherein, can be adjusted to the predetermined angle of emergence by scioptics by the parallel rays of collimating mirror outgoing.Such lighting device can realize, after the adjustment of collimation border, obtain parallel rays, and by the mutual alignment change between the sub-lens of lens of the present invention, realizes the photodistributed effect changing emergent ray.
In a preferred design of the present invention, light source design becomes LED light source.LED technology has energy-conservation, the efficient and advantage of environmental protection, can realize and ensure invention effect of the present invention.
Accompanying drawing explanation
Accompanying drawing forms the part of this description, understands the present invention further for helping.These accompanying drawings illustrate embodiments of the invention, and are used for principle of the present invention is described together with description.The identical label of parts identical in the accompanying drawings represents.Shown in figure:
Fig. 1 a-Fig. 1 e is the partial side view according to lens of the present invention;
Fig. 2 a is the Light distribation figure of the light by lens outgoing according to the present invention;
Fig. 2 b is the coordinate diagram of the hot spot of the formation of light by lens outgoing according to the present invention;
Fig. 3 a is the Light distribation figure of the light by the lens outgoing according to the first embodiment of the present invention;
Fig. 3 b is the coordinate diagram of the hot spot formed by the light of the lens outgoing according to the first embodiment of the present invention;
Fig. 4 a is the Light distribation figure of the light by lens outgoing according to a second embodiment of the present invention;
Fig. 4 b is the coordinate diagram of the hot spot formed by the light of lens outgoing according to a second embodiment of the present invention;
Fig. 5 a is the Light distribation figure of the light by lens outgoing according to the third embodiment of the invention;
Fig. 5 b is the coordinate diagram of the hot spot formed by the light of lens outgoing according to the third embodiment of the invention.
Detailed description of the invention
In being discussed in more detail below, with reference to the accompanying drawing of the part of this description of formation, wherein, showing in an exemplary manner and can implement specific embodiments of the invention.About figure, such as " top ", " end ", " on ", D score directional terms uses with reference to the direction of described accompanying drawing.Because the assembly of the embodiment of the present invention can be placed on many different directions, thus direction term only for illustration of, and without any restriction the meaning.It should be understood that and can use other embodiment, and can structure or logical changes be carried out without departing from the scope of the invention.So, be described below in detail and should be understood to the restrictive meaning, and the present invention is defined by the appended claims.
Fig. 1 a-Fig. 1 e is the partial side view according to lens 100 of the present invention.Can be made up of glass or plastics according to lens 100 of the present invention, not only environmental protection, also can realize invention effect of the present invention cost-effective simultaneously.As seen from the figure, these lens 100 being used for lighting device comprise two sub-lens 1, certainly along with the difference of application scenario, by multiple sub-lens 1, such as three or four, the lens combination of composition also can realize, and each sub-lens 1 has two surfaces opposite to each other.Wherein, visible in Fig. 1 a and Fig. 1 b, have special profile in one of them surface design of each sub-lens 1, such as, shown in figure is corrugated profile 11, and certainly, according to the actual requirements, this profile also can be designed to dentation or other similar structures.In addition, particularly, this surface texture 11 can have tactic at least one crest 111 and at least one trough 112 on first direction or the second direction vertical with first direction, spacing between adjacent crest 111 and trough 112 is λ/2, wherein, with reference to figure 1a-1e, first direction can be understood as parallel paper, from the top of sub-lens to below or from below to the direction of top, and second direction can be understood as the direction perpendicular to paper.In addition, another surface of sub-lens 1 can be designed to be smooth surface.Along with the concrete photodistributed situation needed, the peak-to-peak distance lambda of ripple that two of wavy surface structure 11 are adjacent can be changed, can reach and regulate photodistributed effect.
Two sub-lens 1 in Fig. 1 a-Fig. 1 b have the surface of wavelike structure 11 respectively, and the surface of the wavelike structure 11 of these two sub-lens 1 is arranged with deviating from each other, namely each sub-lens 1, be designed to smooth surface in the face of arrange.As shown in Figure 1a, when offseting λ/2 toward each other between two sub-lens 1, when namely moving to the second relative position from the first relative position (see Fig. 1 b) in a first direction, the crest 111 of one of them sub-lens 1 and trough 112 have the skew of λ/2 relative to the crest 111 of another sub-lens 1 and trough 112, so the crest of a sub-lens is just corresponding with the trough of another sub-lens, now, see on the whole, whole lens have uniform material thickness.In this embodiment, the air gap of uniform thickness can also be had between sub-lens 1.Now, the light launched by the such as LED as light source exports parallel rays after the collimation lens adjustment being in LED downstream, and this parallel rays still almost can remain parallel rays by the light of outgoing after lens 100 of the present invention.Like this, the Light distribation that can reach via the light of lens 100 of the present invention outgoing remains unchanged, original hot spot can be had, as illustrated in figures 2 a-2b, the coordinate diagram of the hot spot of the formation of Fig. 2 a light that to be the Light distribation figure of the light by lens 100 according to the present invention outgoing, Fig. 2 b be by lens 100 according to the present invention outgoing.
As shown in Figure 1 b, when two sub-lens 1 are for being just in time oppositely arranged, when being namely in the first relative position, now two sub-lens 1 do not have the skew of above-mentioned λ/2, and the crest 111 of the wavy surface structure 11 on one of them sub-lens 1 and trough 112 are arrange away from one another with the crest 111 on another sub-lens 1 and trough 112.Like this, because crest 111 and trough 112 are designed to the part in column face, therefore a kind of lens arrangement is constituted by the surface with wavy surface structure 11 of two sub-lens 1, the lens 100 of such design have uneven material thickness, namely material thickness now has maximum, along with the combination of two troughs 112 has minimum of a value along with the combination of two crests 111.In the present embodiment, by the parallel rays of these lens 100 at the light beam producing convergence after the region outgoing of crest, and at the light beam that the generation after the region outgoing of trough is dispersed, thus make the light of scioptics 100 outgoing after predetermined distance, produce the light beam dispersed on the whole.In the first relative position with reference to the lens 100 shown in Fig. 1 b, the light of scioptics 100 outgoing first direction or with first party in the opposite direction on deflect.As shown in Fig. 3 a-3b, Fig. 4 a-4b, when Fig. 3 a-3b shows the crest of wavy surface structure 11 and trough order arranges in a first direction, the Light distribation figure formed through the light of this lens 100 outgoing and hot spot figure.As seen from the figure, the hot spot of circle originally presents the trend extended along a specific direction, can realize the linear illuminating effect on a specific direction.When Fig. 4 a-4b shows the crest of wavy surface structure 11 and trough order arranges in a second direction, the Light distribation figure formed after the light of this lens 100 outgoing and hot spot figure.As seen from the figure, similar with Fig. 3 a-3b, the hot spot of original circle extends along another specific direction, and this direction is vertical with the bearing of trend of the hot spot in Fig. 3 a-3b.
In two sub-lens 1 in Fig. 1 c-1d, one of them surface of each sub-lens 1 has wavy surface structure 11, and the surface with this structure 11 is arranged facing with each otherly, after namely these two sub-lens 1 combine, another surface of each sub-lens 1 is parallel to each other.At the present embodiment, sub-lens 1 can relatively move each other, when namely making crest 111 on another sub-lens 1 of the crest 111 of the wavy surface structure 11 on sub-lens 1 and trough 112 and trough 112 move in a first direction, and the distance of movement is λ/2.In figure 1 c, sub-lens 1 moves to the second relative position, namely offset by λ/2 each other.Now, the lens 100 be made up of two sub-lens 1 have uniform material thickness, and the air gap between two sub-lens 1 also has uniform thickness.Like this, still can keep being parallel rays after outgoing by the parallel rays of the lens 100 of this design, as illustrated in figures 2 a-2b.
In Fig. 1 d, when two sub-lens 1 do not have the skew of λ/2, that is, two sub-lens 1 do not occur each other to offset and are in the first relative position, and the crest 111 on one of them sub-lens 1 and trough 112 are arranged in the face of ground mutually with the crest 111 on another sub-lens 1 and trough 112.Now, each another surface of two sub-lens 1 is arranged parallel to each other, but the air gap between sub-lens 1 has uneven thickness, and the air gap namely formed between trough 112 has maximum gauge, and the air gap formed between crest 111 has minimum thickness.Like this, non-parallel beam can be produced after outgoing by the directional light of the lens 100 of this design, and the Light distribation dispersed can be formed.Shown in Fig. 3 a-3b, Fig. 4 a-4b, according to this embodiment, the angle adjustment of the light beam that the directional light of scioptics 100 also can realize in a first direction or go up in the opposite direction with first party, thus realize Light distribation as shown in the figure.
In addition, as shown in fig. le, the figure shows, one of them of sub-lens 1 is designed with wavy surface structure 11 on the surface, the crest 111 of this structure 11 and/or trough 112 sequentially arrange on first direction or the second direction vertical with first direction, further, be also designed with wavy surface structure 11 on the surface at another of sub-lens 1, the crest 111 of this structure 11 and/or trough 112 be second direction or first direction on tactic.Namely, when designing this structure 11 along first direction on a surface, be design this structure 11 along the direction vertical with first direction on another surface.Like this, when the sub-lens 1 with said structure characteristic is combined into lens 100, by by two sub-lens 1 on first direction or second direction, during the distance of mutual movement 0 to λ/2, non-parallel beam can be produced after outgoing by the parallel rays of these lens 100, thus the such as similar square hot spot that first direction and second direction all present extension trend can be formed in.As such as shown in Fig. 5 a-5b, the coordinate diagram of Fig. 5 a hot spot that to be the Light distribation figure of the light by lens outgoing according to the third embodiment of the invention, Fig. 5 b be is formed by the light of lens outgoing according to the third embodiment of the invention.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Reference number
1 sub-lens
11 wavy surface structures
100 lens
111 crests
112 troughs
Claims (13)
1. the lens for lighting device (100), it is characterized in that, comprise two sub-lens be arranged opposite to each other (1), wherein said sub-lens (1) has two surfaces opposite to each other respectively, described at least one of wherein each described sub-lens (1), surface design becomes wavy surface structure (11), two described sub-lens (1) can be moved relative between the first relative position and the second relative position each other in this wise, make the collimated light beam from the light source of described lighting device when described second relative position through a described sub-lens (1) incident and after sub-lens described in another (1) outgoing, produce collimated light beam and at described first relative position time incident and produce non-parallel beam after sub-lens described in another (1) outgoing through a described sub-lens (1).
2. lens according to claim 1 (100), it is characterized in that, described wavy surface structure (11) has tactic at least one crest (111) and at least one trough (112) on first direction or the second direction vertical with described first direction, spacing between adjacent described crest (111) and described trough (112) is λ/2, wherein, described sub-lens (1) relative movement in this wise each other, make the tactic in said first direction described crest (111) on a described sub-lens (1) and described trough (112) offseting in said first direction with the distance of 0 to λ/2 the tactic described crest (111) of described first direction and described trough (112) relative to the described wavy surface structure (11) on sub-lens described in another (1), or make the tactic in this second direction described crest (111) on a described sub-lens (1) and described trough (112) offseting in this second direction with the distance of 0 to λ/2 the tactic described crest (111) of described second direction and described trough (112) relative to the described wavy surface structure (11) on sub-lens described in another (1).
3. lens according to claim 2 (100), it is characterized in that, in described second relative position, the described crest (111) of the described wavy surface structure (11) of a described sub-lens (1) is positioned opposite with the described trough (112) of the described wavy surface structure (11) of sub-lens (1) described in another.
4. lens according to claim 2 (100), it is characterized in that, in described first relative position, the described crest (111) of the described wavy surface structure (11) of a described sub-lens (1) is positioned opposite with the described crest (111) of the described wavy surface structure (11) of sub-lens (1) described in another.
5. the lens (100) according to any one of claim 2 to 4, is characterized in that, a described surface of each described sub-lens (1) are formed with described wavy surface structure (11) and surface design described in another becomes smooth surface.
6. lens according to claim 5 (100), it is characterized in that, described sub-lens (1) is arranged opposite to each other as making the described surface with described wavy surface structure be arranged opposite to each other, wherein, the described crest (111) of described wavy surface structure (11) and described trough (112) are in described first direction or the arrangement of described second party upstream sequence.
7. lens according to claim 5 (100), it is characterized in that, described sub-lens (1) is arranged opposite to each other as making the described surface with described wavy surface structure arrange away from each other, wherein, the described crest (111) of described wavy surface structure (11) and described trough (112) are in described first direction or the arrangement of described second party upstream sequence.
8. the lens (100) according to any one of claim 2 to 4, it is characterized in that, two described surfaces of described sub-lens (1) have described wavy surface structure (11) respectively, wherein, the described crest (111) of the described wavy surface structure (11) on a surface of same described sub-lens (1) and/or described trough (112) are arranged perpendicular to the described crest (111) of described wavy surface structure (11) on the other surface and/or described trough (112).
9. lens according to claim 8 (100), it is characterized in that, two described sub-lens (1) are arranged so that the described crest (111) of described wavy surface structure (11) facing with each other and/or described trough (112) are arranged perpendicular to the described crest (111) of described wavy surface structure away from each other and/or described trough (112).
10. lens according to any one of claim 1 to 4 (100), is characterized in that, described crest (111) and described trough (112) are designed to the part in column face.
11. lens according to any one of claim 1 to 4 (100), is characterized in that, described sub-lens (1) is made up of glass or plastics.
12. 1 kinds of lighting devices, comprise light source and be arranged on the collimating mirror in downstream of light direction of described light source, it is characterized in that, described lighting device (200) also comprises the lens (100) according to any one of claim 1 to 11, wherein, the predetermined angle of emergence can be adjusted to by described lens (100) by the parallel rays of described collimating mirror outgoing.
13. lighting devices according to claim 12, is characterized in that, described light source design becomes LED light source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226429.8A CN104235755A (en) | 2013-06-07 | 2013-06-07 | Lens and lighting device with same |
| PCT/EP2014/061155 WO2014195217A1 (en) | 2013-06-07 | 2014-05-28 | Lens and illuminating device having said lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226429.8A CN104235755A (en) | 2013-06-07 | 2013-06-07 | Lens and lighting device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104235755A true CN104235755A (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310226429.8A Pending CN104235755A (en) | 2013-06-07 | 2013-06-07 | Lens and lighting device with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104235755A (en) |
| WO (1) | WO2014195217A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954227A (en) * | 2018-08-20 | 2018-12-07 | 上海彩丞新材料科技有限公司 | A kind of lens subassembly of changeable spot size |
| CN110220140A (en) * | 2019-07-08 | 2019-09-10 | 北京大学第三医院（北京大学第三临床医学院） | Operating room additional illumination system and its control method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387921B (en) * | 2017-08-11 | 2024-06-18 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and assembling method thereof |
| EP3953642B1 (en) | 2019-04-08 | 2024-03-06 | Ledil Oy | An optical device for modifying light distribution |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020396A (en) * | 1957-03-29 | 1962-02-06 | Ever Ready Co | Flashlight optical system |
| WO1996016294A1 (en) * | 1994-11-17 | 1996-05-30 | Cunningham, David, W. | Lighting device incorporating a zoomable beamspreader |
| US5666564A (en) * | 1995-08-01 | 1997-09-09 | Eastman Kodak Company | Zoom flash with wave-lens |
| US6115181A (en) * | 1996-11-22 | 2000-09-05 | 3M Innovative Properties Company | Variable beam splitter having opposed alternating convex and concave lens structures |
| DE202007008430U1 (en) * | 2007-06-15 | 2008-10-16 | Heise, Sebastian | lighting device |
| GB2474921B (en) * | 2010-06-08 | 2012-11-28 | Mark Sutton-Vane | Luminaire |
| FR2975460B1 (en) * | 2011-05-16 | 2016-04-15 | Steris Surgical Tech | MEDICAL LIGHTING DEVICE FOR OPERATIVE BLOCK |
-
2013
- 2013-06-07 CN CN201310226429.8A patent/CN104235755A/en active Pending
-
2014
- 2014-05-28 WO PCT/EP2014/061155 patent/WO2014195217A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954227A (en) * | 2018-08-20 | 2018-12-07 | 上海彩丞新材料科技有限公司 | A kind of lens subassembly of changeable spot size |
| CN110220140A (en) * | 2019-07-08 | 2019-09-10 | 北京大学第三医院（北京大学第三临床医学院） | Operating room additional illumination system and its control method |
| CN110220140B (en) * | 2019-07-08 | 2024-04-09 | 北京大学第三医院（北京大学第三临床医学院） | Operating room supplementary lighting system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014195217A1 (en) | 2014-12-11 |
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Application publication date: 20141224 |