CN103574499A - Lens module and illuminating device provided with lens module - Google Patents
Lens module and illuminating device provided with lens module Download PDFInfo
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- CN103574499A CN103574499A CN201210250095.3A CN201210250095A CN103574499A CN 103574499 A CN103574499 A CN 103574499A CN 201210250095 A CN201210250095 A CN 201210250095A CN 103574499 A CN103574499 A CN 103574499A
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- lens
- lens unit
- lens module
- light source
- cover body
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Abstract
The invention relates to a lens module (10) for a light source. The lens module comprises a substrate (1) and at least one lens unit (2) extending out of one side of the substrate (1) and is characterized by further comprising at least one optical adjustor (3), wherein the optical adjustor (3) is perpendicular to the side direction of the optical axis (X) of the lens unit (2) and surrounds the lens unit (2) and leads light leaked from a gap between the light source and the lens unit (2) in the side direction to the lens unit (2). The invention further relates to an illuminating device provided with the lens unit.
Description
Technical field
The present invention relates to a kind of lens module and a kind of lighting device with this lens module.
Background technology
Lens in modern lighting device, have been applied widely.Lens, for example total internal reflection lens conventionally capped or be arranged on light source, particularly for example on the high power light source of LED to form lighting module, can improve illuminating effect thus, and realize good light and distribute.Utilize a plurality of lens, particularly lens arra, in the interior illuminator in being for example applied in market, household or office, can make light from light source soft and penetrate equably; In being for example applied in the outdoor illumination of street lamp, can improving photodistributed uniformity equally, and can improve the optical efficiency of lighting device.
When producing or assembling has the lighting module of lens unit and/or lens arra, owing to there being many reasons, therefore lens unit and/or lens arra precisely and closely cannot be fixed on light source, particularly LED chip or by its covering.Therefore there is inevitable gap in the meeting between light source and lens unit and/or lens arra.These gaps cause total internal reflection lens to carry out total internal reflection to the whole light from light source, parallel towards predetermined direction ejaculation.
In actual applications, lens module is arranged on circuit board 22 as shown in Figure 1, from most of light of light source 21, inject in corresponding lens unit 2, after superrefraction (and/or total internal reflection), through lens unit 2 exiting surfaces, penetrate, to form central emergent light S1.Meanwhile, another part light from light source directly passes through gap G above-mentioned at the side direction updip lens unit 2 that tiltedly directive is adjacent as escape light S2.A part of light in escape light S2 can enter adjacent lens unit 2 again through total internal reflection, and go out as the first emergent light S3, but this lens unit 2 is rear directly to be reflected to exiting surface another part light wherein entering, and as the second emergent light S4, penetrates.The second emergent light S4 disperses to surrounding dispersedly, can produce the hot spot that departs from target to be illuminated thus, seriously affects brightness and the light distribution effect of lighting device.
In order addressing the above problem, according to prior art, the exiting surface of lens module can be designed to microlens array or diffusing surface, or on the surface of lens module, additional microlens array or diffusing surface to be installed.This specially designed exiting surface can reduce the optical efficiency of lens, and has also reduced the light intensity of lens central authorities.
Summary of the invention
Therefore one object of the present invention is, propose a kind of lens module for light source, the shortcoming that it can overcome various solutions of the prior art, is conducive to improve light distribution effect, and improves optical efficiency.
The lens module for light source proposing according to the present invention, comprise substrate and from extended at least one lens unit of a side of described substrate, it is characterized in that, also comprise at least one optics adjuster, described optics adjuster surrounds described lens unit on the lateral of the optical axis perpendicular to described lens unit, and the light the described lateral that the gap leakage between described light source and described lens unit is gone out is diverted to described lens unit.Optics adjuster by means of special design for lens unit, can effectively prevent: from a part of light of light source in the situation that without affiliated lens unit carries out transmission or reflection, directly go out through the escaping slot existing between lens unit and light source on lateral." side direction " refers to the direction perpendicular to optical axis at this, at the light source being for example placed on horizontal plane, has the optical axis extending in vertical direction, and " side direction " just refers to horizontal direction at this.In side direction, surround the optics adjuster of lens unit on the one hand owing to having stopped that the escape light of side direction has interception, can also effectively adjust the light path of this part light being blocked on the other hand, make it be diverted to described lens unit, and through lens unit outgoing.In the situation that this lens unit with optics adjuster of application can be realized evenly and the higher illuminating effect of brightness, avoided especially treating that in illuminated objects, formation is positioned at hot spot fringe region, that do not expect appearance.
According to a preferred design of the present invention, described optics adjuster comprises cover body, and the side towards described lens unit of described cover body is reflecting surface.One end of the cover body part of optics adjuster can be in side direction ambient light source, and the other end at least surrounds the plane of incidence of lens unit, can be blocked in thus the light outwards penetrating in side direction.Particularly preferably, the inner surface of cover body, the face towards lens unit is designed to reflective surface, utilizes this reflective surface can change the light path of the light being blocked.By means of cover body, can reduce the light loss causing due to build-up tolerance in lighting device, and improve the situation of light skewness.
Preferably, described cover body is truncated cone shape and its symmetry axis and described optical axis coincidence.Can be that cover body is attached to completely on the outer wall of lens unit as far as possible in side direction thus, and utilize its reflecting surface advantageously to adjust the light path of side direction incident light in cover body and in lens unit.
Preferably, described optics adjuster surrounds described lens unit completely in the direction of described optical axis.Because optics adjuster has identical length with lens unit on optical axis direction, and surround lens unit completely in side direction, so optics adjuster has the structure that is matched with lens unit exterior contour.The optics adjuster of design can be manufactured and be arranged on lens unit simply like this.Certainly, the length of optics adjuster on optical axis direction also can be less than the length of lens unit.
Preferably, described optics adjuster also comprises at least one first fixture, and described the first fixture is arranged on the periphery wall of cover body.Can make thus optics adjuster as dismountable parts of lens module, be arranged in the plane at light source place together with substrate and lens unit, for example carry on the circuit board of light source.
Preferably, described the first fixture is at least one extended locating dowel in the direction away from described substrate.At least one, be preferably one or more pairs of locating dowels and can guarantee that cover body position is positioned in the plane at light source place regularly, guarantee that thus cover body can surround corresponding light source and lens unit completely exactly in side direction, prevent that cover body is offset each other with lens unit in the direction perpendicular to optical axis.
Preferably, described cover body and the first fixture are made into integration.Can simplify the manufacture of optics adjuster thus, and reduce production costs.
Preferably, the larger diameter end of described cover body is resisted against on described substrate, and described cover body is resisted against in the plane at described light source place.In the situation that cover body has applicable length, can be held in wherein by the plane holder at substrate and light source place.In the time of in lens module is arranged on to lighting device, without just can realize cover body fixing on optical axis direction by means of optional feature.
According to of the present invention another, preferred embodiment propose, a plurality of described optics adjusters are attached troops to a unit respectively in a plurality of described lens units, and described a plurality of optics adjusters are made into integration.In actual applications, a plurality of lens units are integrated on substrate to form lens arra.Attach troops to a unit and therefore also can be made into integration in a plurality of optics adjusters of lens unit, to guarantee that each cover body can accurately surround the lens unit of attaching troops to a unit in side direction.This design is also conducive to the efficient lens module of manufacturing cheaply.
Preferably, described optics adjuster is made of plastics.That plastics have is with low cost, deadweight is less, be easy to the advantages such as moulding, is therefore particularly suitable as the base material of producing optics adjuster.
Preferably, described lens unit is total internal reflection lens.This lens unit can improve the outgoing effect of light, and is conducive to obtain uniform light distribution patterns.
Preferably, described lens module also comprises extended at least one second keeper of a side from described substrate.At least one, be preferably one or more pairs of the second keepers and be evenly arranged on substrate, thus can by substrate and be formed on lens unit on substrate be fixed on carrying lens module, particularly in the plane at light source place.
Propose according to another aspect of the present invention a kind of lighting device, comprise light source, carry circuit board and the radiator of described light source, it is characterized in that, also comprise said lens module.The lighting device that this lens module is installed can obtain uniform light distribution patterns not by means of microlens array or diffusing surface in the situation that, and has energy-efficient feature.
Preferably, described optics adjuster is arranged between described substrate and described circuit board, and described optics adjuster surrounds described light source and lens unit.Can guarantee thus optics adjuster in light path between light source and lens unit, the light path with adjustment member from the light of light source.
Preferably, one end of the cover body of described optics adjuster is pressed on a side of the described light source of carrying of described circuit board, and the described other end is pressed on described substrate.In the mode of this clamping, not only can guarantee that optics adjuster is fixed between circuit board and substrate on optical axis direction, but also can make the cover body of optics adjuster surround completely and be arranged on the light source on circuit board and be formed on the lens unit on substrate in side direction.
Preferably, described lens module is arranged on described circuit board, wherein as the locating dowel of described the first fixture with as the locating dowel of the second fixture, is inserted into respectively in the perforate of described circuit board.The first and second fixtures by means of lens module self can be directly mechanically coupled together by lens module and circuit board, with the quantity of the optional feature that reduces to use in assembling process.Locating dowel can also be designed to such as other applicable structures such as snap fits.
Should be appreciated that, above generality is described and the following detailed description is all enumerated and illustrative, and object is for the further instruction that the invention provides to claimed.
Accompanying drawing explanation
Accompanying drawing forms the part of this description, for helping further to understand the present invention.These accompanying drawings illustrate embodiments of the invention, and are used for illustrating principle of the present invention together with description.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 is according to the index path of lens module in prior art;
Fig. 2 is according to the three-dimensional exploded view of the first specific embodiment of lens module of the present invention;
Fig. 3 is the stereo amplification figure of the optics adjuster shown in Fig. 2;
Fig. 4 is the sectional view of the optics adjuster shown in Fig. 2;
Fig. 5 is according to the index path of the first specific embodiment of lens module of the present invention;
Fig. 6 is the three-dimensional exploded view according to lighting device of the present invention.
The specific embodiment
Fig. 2 is according to the three-dimensional exploded view of the first specific embodiment of lens module of the present invention.Lens module 10 according to the present invention comprises lens component and for the optics adjuster 3 of lens component, and wherein lens component comprises substrate 1 and is formed on the lens unit 2 of at least one cup-shaped of one side.In order to realize good light distribution effect, select in the present embodiment a plurality of lens units 2 and substrate 1 to become one, as the lens arra for light source.
Due to will be as shown in Figure 2 lens arra be arranged on lighting device in time, between each lens unit 2 and the light source 21 under it, may there is inevitable gap G(as shown in Figure 1).Therefore can by means of in side direction, at the optical axis X(perpendicular to lens unit 2 as shown in Figure 1) direction on the optics adjuster 3 of ambient light source and lens unit 2 carry out the gap G shown in Closed Graph 1, can stop thus the escape light S2 penetrating through gap G in Fig. 1.
Optics adjuster 3 comprise cover body 4 and from cover body 4 sides extended the first fixture 5, be a pair of locating dowel.Cover body 4 has the truncated-cone profile of the lens unit 2 that is matched with cup-shaped, and its larger diameter end can be resisted against on substrate 1 and surround lens unit 2 when confined state, and its smaller diameter end is designed in side direction, to surround the light source corresponding to this lens unit 2 simultaneously.Can make thus cover body 4 in light path between light source and lens unit 2, to the light from light source is adjusted.Preferably cover body 4 can be designed to reflective surface towards a side of lens unit 2, to the light from light source is reflected towards lens unit 2, to improve the optical efficiency of the lighting device that this lens module 10 is installed.
For cover body 4 being attached to as far as possible be completely designed to, on the outer wall of lens unit 2 of total internal reflection lens, preferably make the rotation axes of symmetry of cover body 4 and the optical axis X of lens unit 2 overlap.Based on this symmetric design, also can make the inwall of cover body 4 there is the curved profile consistent with the outer wall of lens unit 2, so that the light that light source is sent reflects.
In addition, on the fringe region of substrate 1, extend a plurality of the second fixtures 6 as locating dowel, by means of these second fixtures 6, substrate 1 directly can be fixed on the parts of carrying lens module 10 with the form of pegging graft.Also can be in other regions of substrate 1, for example the second fixture 6 is set between two adjacent lens units 2, to strengthen the fixed effect of substrate 1.
In a unshowned embodiment, lens unit can have other exterior contours except basin shape, and be designed for, cover the cover body of lens unit so has the profile mating with it.
In another unshowned embodiment, the length of cover body on optical axis direction can be less than the length of lens unit.That is to say, the larger diameter end of cover body can only cover lens unit towards the subregion of light source, particularly light entrance face in side direction.
Fig. 3 is the stereo amplification figure of the optics adjuster shown in Fig. 2.Can select applicable plastic material to manufacture optics adjuster 3, make thus optics adjuster 3 there is feature with low cost, that deadweight is less.
As can be seen from Figure 3, cover body 4 has open larger diameter end and smaller diameter end, and is connected to the perisporium between larger diameter end and smaller diameter end.The inwall of perisporium is designed for the reflective surface that changes light path, is formed with a pair of the first fixture 5 extending away from larger diameter end on its outer wall.By means of the first fixture 5, optics adjuster 3 for example can be fixed on parts to be installed in the mode of pegging graft.The first fixture 5 is preferably made into integration with cover body 4.
Sectional view in conjunction with the optics adjuster 3 shown in Fig. 4 can be found out, for example, when optics adjuster 3 is fixed on circuit board 22, the first fixture 5 that is designed to locating dowel inserts in circuit board 22, to optics adjuster 3 is positioned in the horizontal direction illustrating in the drawings.The smaller diameter end of cover body 4 can be resisted against on the upper surface of circuit board 22 in the case, to the light source (not shown) being arranged on circuit board 22 can be fully enclosed in wherein, for a change the light path from the light of light source provides possibility.
In the embodiment shown in another, also the first fixture 5 can be designed to barb or other similar location structures.
Fig. 5 is according to the index path of the first specific embodiment of lens module of the present invention.For simplicity, only schematically show the light path that is positioned at central lens unit 2.When lens module 10 is fixed on circuit board 22, optics adjuster 3 can stop that the light from light source 21 outwards penetrates in side direction on the one hand, can utilize on the other hand the reflecting surface of self that the light receiving is reflected back in lens unit 2 again, to improve light emission rate.
Fig. 6 is the three-dimensional exploded view according to lighting device of the present invention.Lighting device 20 comprises circuit board 22 and the radiator 23 of light source 21, carrying light source 21, and the lens module shown in Fig. 2 10.For the sake of clarity, in Fig. 6, only show an independent optics adjuster 3.With light source 21 and lens unit (not shown) one to one optics adjuster 3 can be pressed on circuit board 22 by substrate 1, and light source 21 can be contained in the cavity himself limiting completely in the side towards circuit board 22, and lens unit can be contained in this cavity in the side towards substrate 1, with the form of cover body, in side direction, sealed the gap that may exist between circuit board 22 and lens unit 2 thus.When assembling, can by the fixed structure on optics adjuster 3 and on substrate 1, (be the first and second fixtures 5 shown in amplification in Fig. 2 respectively, 6) insert in perforate (not shown) default on circuit board 22, thus lens module 10 and circuit board 22 are fixed together.Radiator 23 can be used as base at this and carries and hold the circuit board 22 that lens module 10 is installed.
In category of the present invention, optics adjuster 3 can be made by with low cost, the less plastics of deadweight.Light source 21 can be LED light source.
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 modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Label list
1 substrate
2 lens units
3 optics adjusters
4 cover bodies
5 first fixtures
6 second keepers
10 lens modules
20 lighting devices
21 light sources
22 circuit boards
23 radiators
S1 central authorities emergent light
S2 escape light
S3 the first emergent light
S4 the second emergent light
G gap
X optical axis
Claims (16)
1. the lens module for light source (10), comprise substrate (1) and from extended at least one lens unit of a side (2) of described substrate (1), it is characterized in that, also comprise at least one optics adjuster (3), described optics adjuster (3) surrounds described lens unit (2) on the lateral of the optical axis perpendicular to described lens unit (2) (X), and the light the described lateral that the gap leakage between described light source and described lens unit (2) is gone out is diverted to described lens unit (2).
2. lens module according to claim 1 (10), is characterized in that, described optics adjuster (3) comprises cover body (4), and the side towards described lens unit (2) of described cover body (4) is reflecting surface.
3. lens module according to claim 2 (10), is characterized in that, described cover body (4) is truncated cone shape, and the symmetry axis of described cover body (4) and described optical axis (X) overlap.
4. according to the lens module (10) described in any one in claim 1-3, it is characterized in that, described optics adjuster (3) surrounds described lens unit (2) completely in the direction of described optical axis (X).
5. according to the lens module described in claim 2 or 3 (10), it is characterized in that, described optics adjuster (3) also comprises at least one first fixture (5), and described the first fixture (5) is arranged on the periphery wall of cover body (4).
6. lens module according to claim 5 (10), is characterized in that, described the first fixture (5) is at least one extended locating dowel in the direction away from described substrate (1).
7. according to the lens module (10) described in any one in claim 1-3, it is characterized in that, described cover body (4) and the first fixture (5) are made into integration.
8. according to the lens module described in claim 2 or 3 (10), it is characterized in that, it is upper that the larger diameter end of described cover body (4) is resisted against described substrate (1), and described cover body (4) is resisted against in the plane at described light source place.
9. according to the lens module (10) described in any one in claim 1-3, it is characterized in that, a plurality of described optics adjusters (3) are attached troops to a unit respectively in a plurality of described lens units (3), and described a plurality of optics adjusters (3) are made into integration.
10. according to the lens module (10) described in any one in claim 1-3, it is characterized in that, described optics adjuster (3) is made of plastics.
11. lens modules according to claim 1 and 2 (10), is characterized in that, described lens unit (2) is total internal reflection lens.
12. lens modules according to claim 1 and 2 (10), is characterized in that, also comprise extended at least one second keeper (6) of a described side from described substrate (1).
13. 1 kinds of lighting devices (20), comprise light source (21), carry circuit board (22) and the radiator (23) of described light source (21), it is characterized in that, also comprise according to the lens module (10) described in any one in claim 1-12.
14. lighting devices according to claim 13 (20), it is characterized in that, described optics adjuster (3) is arranged between described substrate (1) and described circuit board (22), and described optics adjuster (3) surrounds described light source (21) and lens unit (2).
15. lighting devices according to claim 14 (20), it is characterized in that, one end of the cover body (4) of described optics adjuster (3) is pressed on a side of the described light source of carrying (21) of described circuit board (22), and the described other end is pressed on described substrate (1).
16. lighting devices according to claim 14 (20), it is characterized in that, described lens module (10) is arranged on described circuit board (22), wherein as the locating dowel of described the first fixture (5) with as the locating dowel of the second fixture (6), is inserted into respectively in the perforate of described circuit board (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250095.3A CN103574499A (en) | 2012-07-18 | 2012-07-18 | Lens module and illuminating device provided with lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250095.3A CN103574499A (en) | 2012-07-18 | 2012-07-18 | Lens module and illuminating device provided with lens module |
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| Publication Number | Publication Date |
|---|---|
| CN103574499A true CN103574499A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210250095.3A Pending CN103574499A (en) | 2012-07-18 | 2012-07-18 | Lens module and illuminating device provided with lens module |
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| CN (1) | CN103574499A (en) |
Cited By (2)
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| WO2019014867A1 (en) * | 2017-07-19 | 2019-01-24 | 瑞仪(广州)光电子器件有限公司 | Optical lens, backlight module and display device |
| CN114981592A (en) * | 2018-05-01 | 2022-08-30 | 生态照明公司 | Lighting system and device with central silicone module |
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Application publication date: 20140212 |