CN203231238U

CN203231238U - Lens and lighting system with same

Info

Publication number: CN203231238U
Application number: CN 201320182509
Authority: CN
Inventors: 张发伟; 林万炯
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2013-10-09
Anticipated expiration: 2023-03-28

Abstract

The utility model relates to a lens and a lighting system with the same. The lighting system comprises at least one lens and at least one to-be-irradiated surface. The lens comprises at least one lens unit. Each lens unit comprises an optical axis, a light source holder, a fully reflecting surface, a first emergent surface and at least one second emergent surface, wherein the light source holder is vertically disposed on the optical axis, the fully reflecting surface receives emergent light from the light source holder, the first emergent surface receives emergent light from the fully reflecting surface, and each second emergent surface receives emergent light from the light source holder. Though the emergent light from the first emergent surface has larger attenuation as compared to the emergent light from the second emergent surface due to the fact that the emergent light from the first emergent surface irradiates to places farther away from the lens, and the emergent light from the second emergent surface irradiates to places closer to the lens, the first emergent surface receives more emergent light from the light source holder as compared with the second emergent surface, the attenuation is offset, and accordingly the places farther away from and closed to the lens has basically the same illuminance.

Description

A kind of lens and use the illuminator of these lens

Technical field

The utility model relates to a kind of illuminator, particularly a kind of illuminator that the lens of even illumination can be provided and use these lens.

Background technology

In general daily life, all can see various lighting apparatus everywhere, for example, fluorescent lamp, street lamp, desk lamp, artistic lamp etc.In above-mentioned lighting apparatus, major part is as illuminating source with osram lamp traditionally.In recent years, because science and technology is maked rapid progress, utilized light emitting diode (LED) as luminous source.Very the person except lighting apparatus, for general traffic sign, billboard, car light etc., also changes into and uses light emitting diode as illuminating source.As previously mentioned, use light emitting diode as illuminating source, its benefit is power saving, and brightness is bigger, so generalization gradually on using.

As shown in Figure 1, for using LED as the light path schematic diagram of the illuminator of light source in a kind of prior art.This illuminator comprises that 1, one of a plane of illumination is arranged on the led light source 2 of these plane of illumination 1 one sides.This led light source 2 comprises an exiting surface 3, and this exiting surface 3 penetrates countless lamp wirings 4 and is radiated on the plane of illumination 1.What can expect is, no matter described led light source 2 is placed on which position of plane of illumination 1, then the be bound to far-end of directive plane of illumination 1 of the be bound to near-end of directive plane of illumination 1 of the part in the light 4 that exiting surface 3 penetrates, another part.Just because of above inevitable light irradiating structure, the light of directive plane of illumination 1 near-end with respect to the light attenuation of directive plane of illumination 1 far-end with less, and no matter be the light of directive far-end or the light of directive near-end, its original intensity value equates, therefore can cause because plane of illumination 1 is different with respect to the distance of led light source 2, its lightness is also different, i.e. plane of illumination 1 illumination difference everywhere.

This inhomogeneous lighting effect is for some occasions, as show room, exhibition, again or the illumination occasion in some markets, because lighting effect is inhomogeneous, be that the even article that are demonstrated that will reduce of uneven illumination are given visitor or buyer's visual effect, give the visual product texture of people thereby reduce displaying articles.

The utility model content

In view of this, be necessary to provide a kind of illuminator that the uniform lens of lighting effect can be provided and use these lens, to overcome above-mentioned deficiency.

A kind of lens comprise at least one lens unit.Each lens unit comprises an optical axis, a light source placement that is vertically set on the described optical axis, one is arranged on described light source placement right opposite and receives fully reflecting surface from the emergent light of light source placement, first exit facet that receives only the emergent light of described fully reflecting surface, and at least one receives second exit facet from the emergent light of light source placement.

A kind of illuminator, it comprises at least one lens, and at least one plane of illumination corresponding with corresponding lens respectively.Described lens comprise at least one lens unit.Each lens unit comprises an optical axis, a light source placement that is vertically set on the described optical axis, reception is from the fully reflecting surface of the emergent light of light source placement, first exit facet that receives the emergent light of described fully reflecting surface, and at least one receives second exit facet from the emergent light of light source placement.

Compared with prior art, directive can have bigger decay from the ejaculation light of module second exit facet more nearby than directive at a distance from the LED module though first exit facet penetrates light, but because first exit facet is compared with second exit facet, it receives from the more amount of light in light source placement, thereby the ejaculation light that has remedied this first exit facet is owing to arriving the more decay that causes from the LED module at a distance, and then can make from the LED module and essentially identical illumination is arranged more nearby with from the LED module at a distance.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described, wherein:

Fig. 1 is the light channel structure schematic diagram of the illuminator of prior art.

The light path schematic diagram of a kind of illuminator that Fig. 2 provides for the utility model.

Fig. 3 is the perspective view of the lens in the illuminator of Fig. 2.

Fig. 4 is the schematic cross-section of the lens of Fig. 3.

Fig. 5 is the light path schematic diagram of the lens of Fig. 3.

Fig. 6 is the schematic diagram of shooting angle of each exit facet of the lens of Fig. 3.

The specific embodiment

Below based on accompanying drawing specific embodiment of the utility model is further elaborated.Should be appreciated that specific embodiment described herein only as embodiment, and be not used in restriction protection domain of the present utility model.

See also Fig. 2 to Fig. 6, the structural representation of a kind of illuminator 100 that provides for the utility model.This illuminator 100 comprises at least one LED module 10, and at least one plane of illumination 20 corresponding with each LED module 10 difference.In actual applications, described LED module 10 may comprise a plurality of, and this can determine the big or small of plane of illumination 20 or what according to.In the present embodiment, only in order to describe the utility model in detail, so a LED module 10 and a plane of illumination 20 corresponding with this LED module 10 only are shown.What can expect is that this illuminator 100 also comprises other components and parts, as cabinet, for the lamp bracket that LED module 10 is set, assemblies such as lampshade, and be used for power supply to 10 power supplies of LED module etc., because suchlike assembly is not emphasis of the present utility model, do not repeat them here.

Described LED module 10 comprises lens 11 and a LED12 who uses with these lens 11 collocation.

See also Fig. 3 and Fig. 4, described lens 11 comprise at least one lens unit 13.Each lens unit 13 comprises an optical axis 131, a light source placement 132 that is used for arranging LED12, reception is from the fully reflecting surface 133 of the emergent light of light source placement 132, first exit facet 134 that receives the emergent light of described fully reflecting surface 133, and at least one receives second exit facet 135 from the emergent light of light source placement.In the present embodiment, described lens 11 comprise along optical axis 131 symmetrically arranged two lens units 13.What can expect is, according to light distribution requirements, described lens 11 can comprise a plurality of lens units 13, and these a plurality of lens units 13 can have single optical axis, also can have a plurality of optical axises.

Consistent with all lens, each lens all comprises at least one optical axis.In the present embodiment, described lens 11 include only 131, two lens units 13 of an optical axis and are symmetrical arranged along this optical axis 131.This optical axis 131 is used for arranging light source, i.e. LED12, the well-known guiding that is this optical axis 131 and also is light path design simultaneously.

Described light source placement 132 is used for light source is set, as LED12, or other light source, as fluorescent lamp.In the present embodiment, described light source is LED12.What can expect is, when the dimension scale of the dimension scale of other light sources such as fluorescent lamp and lens 11 and LED12 and lens 11 is suitable, then also can use fluorescent lamp to be used as light source, can reach the technique effect that the utility model will reach equally.In the present embodiment, described light source placement 132 is that a vertical described optical axis 131 is opened in a counterbore between two lens units 13.Described LED12 can be arranged on the inside of this counterbore, also can be arranged on the outside of this counterbore, and namely the inside of counterbore or outside all can be used as the light source placement 132 of light source.When LED12 is arranged in the counterbore, in order to make the maximized while of utilizing of lens 11, be convenient to assemble this lens 11 and LED12, the opposition side of the exiting surface of this LED12 flushes with the openend of described counterbore.When LED12 is arranged on the outside of counterbore, all can enter in the lens 11 in order to make all light of LED12, preferably, the exiting surface of this LED12 flushes with the openend of described counterbore.In the present embodiment, the exiting surface of described LED12 flushes with the openend of described counterbore.Need to prove that in addition arranging of described light source placement 132 will be by the requirement of luminous intensity distribution, the factors such as quantity of lens unit 13 determine.For example, when having only a lens unit 13, this light source placement 132 will only be arranged on this lens unit 13.And in the present embodiment, owing to have two light source placements 132, and if have only a light source led 12, all receiving the light of this light source led 12 in order to make two lens units 13, this light source placement 132 will be arranged between these two lens units 13.Simultaneously, in order to make the received light intensity unanimity of two lens units 13, this light source placement 132 is arranged on the middle of described two lens units 13.

Described fully reflecting surface 133 is used for receiving the emergent light from light source led 12, and this emergent light is reflected to first exit facet 134.This fully reflecting surface 133 is according to the design of optical total-reflection principle, and this first exit facet 134 is arranged on the right opposite of described light source placement 132, to receive many illumination as far as possible.In the present embodiment, the cross section contour of this fully reflecting surface 133 is approximate parabola.

Please in conjunction with Fig. 5, described first exit facet 134 is connected with described fully reflecting surface 133, and receives only the reverberation from this fully reflecting surface 133.Because whole reverberation that this first exit facet 134 receives from fully reflecting surface 133, and because fully reflecting surface 133 is arranged on the right opposite of described light source placement 132, receive maximum illumination, therefore, described first exit facet 134 also will receive maximum illumination.This first exit facet 134 reflects away the reverberation of the fully reflecting surface 133 that receives and be radiated on the plane of illumination.Angle of reflection by the refraction angle that utilizes these first exit facet, 134 places, described fully reflecting surface 133 places, and the setting along the factors such as position of optical axis 131 of light source led 12, the emergent light at first exit facet, 134 places and the angle of optical axis about 85 degree be can be remained on between 65 degree, a angle and b angle among Fig. 6 seen also.The meaning of here " approximately " is because the characteristic of light determines, can not strictness define a certain light preparatively, produces because light has optical phenomenas such as diffraction, scattering in communication process, so here approximately refer in desirable or theoretic angle.Also be provided with waveform projection 1341 on described first exit facet 134.The effect of this waveform projection 1341 is to enlarge the shooting angle of the emergent light of described first exit facet 134.Explained later is the meaning of this shooting angle once, and when light is radiated on the plane of illumination 20, it will form a hot spot.This hot spot is divided into the vertical and horizontal both direction, and this first exit facet 134 is visualized as a spot light, then this spot light and vertical or horizontal just can shape at an angle, this angle is vertical shooting angle or horizontal shooting angle.Therefore, this waveform projection 1341 is for the vertical shooting angle of expansion or enlarges horizontal shooting angle that its requirement according to luminous intensity distribution is set.In the present embodiment, described waveform projection 1341 is used for enlarging the horizontal shooting angle along the length direction of plane of illumination 20.Simultaneously, because the effect of this waveform projection 1341, the light of fully reflecting surface 133 reflections can be by these waveform projection 1341 reflections, namely these waveform projection 1341 some light for fully reflecting surface 133 reflections become fully reflecting surface, and the reflection of part incident light is penetrated to fully reflecting surface 133 and from this fully reflecting surface 133.The curvature of this waveform projection 1341, chord length are according to the vertical shooting angle of require or horizontal shooting angle, and the amount of light that will reflect is set.

Please in conjunction with Fig. 5, described second exit facet 135 is used for receiving the emergent light from the light source led 12 of light source placement 132, and penetrates after reflecting and shine on the plane of illumination 20.For the amount of light that guarantees first exit facet 134 amount of light greater than described second exit facet 135, the cross-sectional length of described first exit facet 134 should be greater than the cross-sectional length of described second exit facet 135.Described second exit facet 135 need be arranged on the opposite side with respect to fully reflecting surface 133 of first exit facet 134.Described second exit facet 135 can comprise a plurality of.When described second exit facet 135 comprises when a plurality of, the cross-sectional length of these a plurality of second outgoing 135 is towards successively decreasing away from the direction of first exit facet 134.When including only second exit facet 135, the refraction angle of the counterbore by the refraction angle that utilizes these second exit facet, 135 places, described light source placement 132, and the setting along the factors such as position of optical axis 131 of light source led 12, the emergent light at second exit facet, 135 places and the angle of optical axis 131 about 65 degree be can be remained on between 0 degree, c angle and d angle among Fig. 6 seen also.And when comprising a plurality of second exit facet 135, the refraction angle of refraction angle that also can be by utilizing each second exit facet, 135 place, the counterbore of described light source placement 132, and the setting along the factors such as position of optical axis 131 of light source led 12, the emergent light at each second exit facet, 135 place and the angle of optical axis 131 are arranged in order, but, must, the angle sum of the emergent light of these a plurality of second exit facets 135 and optical axis 131 will remain on about 65 degree between 0 degree.It is more even that the light that a plurality of second exit facets 135 are conducive to it is shone on the plane of illumination 20 is set, but can increase designing requirement and the precision of optical lens.With described first exit facet 134, also be provided with waveform projection 1351 on described second exit facet 135.The effect of this waveform projection 1351 is to enlarge the shooting angle of the emergent light of described second exit facet 135.

Described LED (Light Emitting Diode) the 12nd, a kind of solid-state semiconductor devices that electric energy can be converted into visible light, it can directly be converted into luminous energy to electricity.The center of this LED12 is arranged on the optical axis 111 of lens 11.Correlation technique about LED is known by those skilled in the art, does not repeat them here.

Described plane of illumination 20 is the position of described LED module 10 irradiations, and it can be the plane, also can be curved surface.In the present embodiment, the utility model only is described for example, this plane of illumination 20 is the plane.This plane of illumination 20 can be the article such as picture that will illuminate in the museum, also can be at the supermarket in the product of peddling in the refrigerator-freezer.As shown in Figure 2, when described LED module 10 is installed, should with the optical axis 131 of described lens 11 perpendicular to or can not be parallel to described plane of illumination 20 at least, thereby can make light directive plane of illumination 20 that described first exit facet 134 a penetrates side far away with respect to LED module 10, and make light directive plane of illumination 20 that second exit facet 135 a penetrates side nearer with respect to LED module 10.

Now illustrate the operation principle of this illuminator 100, for the lens among Fig. 4, when work, the index path of its illuminator 100 as shown in Figure 2.In these lens 11, the emergent light directive of described first exit facet 134 is from the side of LED module 10 away from, and the emergent light directive of second exit facet 135 is from the nearer side of LED module 10.Because fully reflecting surface 133 is arranged on the right opposite of described light source placement 132, receives maximum illumination, therefore, described first exit facet 134 also will receive maximum illumination.And second exit facet 135 receives long light with respect to first exit facet 134, therefore, though the light that first exit facet 134 penetrates is because directive can have bigger decay from the ejaculation light of LED module 10 second exit facet 135 more nearby than directive at a distance from LED module 10, but because the light quantity that the emergent light of second exit facet 135 receives is less, thereby make the exit facet 134 of winning remedy the ejaculation light of first exit facet 134 with respect to second exit facet 135 owing to arriving the more decay that causes from LED module 10 at a distance.So this illuminator 100 can make from LED module 10 has essentially identical illumination at a distance more nearby with from LED module 10.Here, the meaning that needs explanation " basic identical ", though this is basic identical refer to the illumination apparatus measures from LED module 10 away from or the both sides of nearer plane of illumination 20, its brightness value may be not exclusively the same, but then be difficult to discover this difference for people's perusal, thereby reach the vision for people, the lighting effect of plane of illumination 20 is that illumination is consistent.In addition, because first exit facet 134 is provided with waveform projection 1341, making has part light to penetrate towards fully reflecting surface 133 reflections, and the light that this part is reflected out can illuminate the plane of illumination 20 of described lens 11 right opposites.Thereby can reach the purpose that illuminates whole plane of illumination 20.

In sum, compared with prior art, directive can have bigger decay from the ejaculation light of LED module 10 second exit facet 114 more nearby than directive at a distance from LED module 10 though first exit facet 134 penetrates light, but because first exit facet 134 is compared with second exit facet 135, it receives from light source placement 132 more amount of lights, thereby the ejaculation light that has remedied this first exit facet 134 is owing to arriving the more decay that causes from LED module 10 at a distance, and then can make from LED module 10 and essentially identical illumination is arranged more nearby with from LED module 10 at a distance.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all interior any modifications of doing in spirit of the present utility model and principle, be equal to and replace and improvement etc., all should be included in protection domain of the present utility model in.

Claims

1. lens, it comprises at least one lens unit, each lens unit comprises an optical axis, a light source placement that is vertically set on the described optical axis, it is characterized in that: described each lens unit comprises that also one is arranged on described light source placement right opposite and receives fully reflecting surface from the emergent light of light source placement, first exit facet that receives only the emergent light of described fully reflecting surface, and at least one receives second exit facet from the emergent light of light source placement.

2. lens as claimed in claim 1, it is characterized in that: described lens comprise two lens units, these two lens units are with described symmetrical setting.

3. lens as claimed in claim 1, it is characterized in that: the cross-sectional length of described first exit facet is greater than the cross-sectional length of described second exit facet.

4. lens as claimed in claim 1, it is characterized in that: the described first exit facet upper edge optical axis direction is provided with the waveform projection, and this waveform projection is used for enlarging the shooting angle of the emergent light of described first exit facet.

5. lens as claimed in claim 4 is characterized in that: described waveform projection penetrates the reflection of part incident light to fully reflecting surface and from this fully reflecting surface.

6. lens as claimed in claim 1, it is characterized in that: the described second exit facet upper edge optical axis direction is provided with the waveform projection, and this waveform projection is used for enlarging the shooting angle of the emergent light of described second exit facet.

7. lens as claimed in claim 1 is characterized in that: when described lens unit comprised a plurality of second exit facet, the cross-sectional length of these a plurality of second exit facets was towards successively decreasing away from the direction of first exit facet.

8. illuminator, it comprises at least one lens, and at least one plane of illumination corresponding with corresponding lens respectively, described lens comprise at least one lens unit, each lens unit comprises an optical axis, a light source placement that is vertically set on the described optical axis, it is characterized in that: described each lens unit comprises that also a reception is from the fully reflecting surface of the emergent light of light source placement, first exit facet that receives the emergent light of described fully reflecting surface, and at least one receives second exit facet from the emergent light of light source placement.

9. illuminator as claimed in claim 8 is characterized in that: the light directive plane of illumination side far away with respect to lens that described first exit facet penetrates, the light directive plane of illumination side nearer with respect to lens that described second exit facet penetrates.

10. illuminator as claimed in claim 8, it is characterized in that: when described lens unit comprises a plurality of second exit facet, the cross-sectional length of these a plurality of second exit facets is towards successively decreasing away from the direction of first exit facet, and the emergent light of these a plurality of second exit facets is a directive plane of illumination side nearer with respect to lens one by one.