CN208901325U - A kind of lens and the lamps and lanterns using the lens - Google Patents

Abstract

The utility model relates to lighting technical fields, more particularly to a kind of lens and using the lamps and lanterns of the lens, the lens, incident area and exit area are equipped on the lens, outer side surface between the exit area and incident area is formed with reflecting region, and the exit area includes the first exit area and the second exit area for being surrounded on outside first exit area；Second exit area includes basal plane and several protrusion elements for being arranged on the basal plane, the basal plane is with a big end and a small end, the small end of the basal plane is at a distance from big end, it is H1 on the direction along the lens axis, it is D1,3 >=D1/H1 >=1.1 on the direction perpendicular to the lens axis；The protrusion element is arranged around the lens axis, and in the plane for crossing lens axis, the light positioned at the plane at least has some light and intersect after the protrusion element.

Description

A kind of lens and the lamps and lanterns using the lens

Technical field

The utility model relates to lighting technical fields, and in particular to a kind of lens and the lamps and lanterns using the lens.

Background technique

In lighting technical field, in order to make lamps and lanterns output meet illumination need light field, it usually needs setting lens or Person gives out light cup, is adjusted by the light that each optical surface on lens or reflector issues light source, what light source issued Several light beams are projected after lens or reflector, according to design optical path with same or different angle, are then shone in design The illumination spot for meeting design requirement is formed at bright position.

For example, application No. is: 201721828999.4 Chinese patent: it discloses a kind of collimation LED lens and collimations LED light, as shown in Figure 1, which includes in horn-like lens body 30, and lens body 30 is by incidence end to exit end ruler Very little increase.The incidence end of lens body 30 offers incident slot 31, and the slot bottom of incident slot 31 forms first plane of incidence 32, incident slot 31 side forms second plane of incidence 33.The lateral surface of lens body 30 offers several reflective steps 35, adjacent reflection platform Reflecting surface 36 is formed between rank 35, the light after the refraction of second plane of incidence 33 is reflected through reflecting surface 36 again, is actually made In, as shown in Figure 2, the light that LED light 20 projects, first plane of incidence of routing 32 is incident, then by the first exit facet 34 Outgoing forms collimated ray.Another way is incident by second plane of incidence 33, is reflected after refraction through reflecting surface 36, the light of reflection Line is emitted through going out light table rank 37 again, and since the light for going out light table rank 37 with reflecting is vertical, light table rank 37 is projected out Light is collimated ray, consistent with the collimated ray direction that the outgoing of the first exit facet 34 is formed.

Although above-mentioned lens arrangement, the light that can be issued to light source carries out the illumination light of shape needed for convergence is formed Spot, still, still there is also there is a deficiency, said lens structure is in the work of practical light distribution, by the light of second plane of incidence incidence, It is projected after reflective surface, then by going out light table rank, in the optic path process, goes out to exist light in reflecting surface and overflow Out the case where lens, especially when light source installation site and design position are there are when deviation, the angle of incidence of light at reflecting surface It changes, also further urgent light overflow problem, and then significantly reduces lens light efficiency, while also increasing installation In the process, the installation accuracy of light source and lens relative position requirement, brings biggish difficulty to assembly work.

So good light efficiency can either be ensured by needing to design one kind at present, and it can reduce the saturating of installation accuracy requirement Mirror structure.

Summary of the invention

The purpose of this utility model is that: for current lens arrangement there are light efficiency is lower and installation accuracy require compared with High problem, good light efficiency can either be ensured by providing one kind, and can reduce the lens arrangement of installation accuracy requirement.

To achieve the goals above, the technical solution adopted in the utility model are as follows:

A kind of lens are equipped with incident area and exit area on the lens, are located at the exit area and incidence zone Outer side surface between domain is formed with reflecting region, and the exit area includes the first exit area and is surrounded on described first and goes out Penetrate the second exit area outside region；

Second exit area includes basal plane and several protrusion elements for being arranged on the basal plane, perpendicular to lens In the plane of optical axis, the cross sectional shape of the basal plane is gradually expanded on the direction by small end to big end,

The small end of the basal plane is H1 on the direction along the lens axis, perpendicular to described at a distance from big end It is D1 on the direction of lens axis, 3 >=D1/H1 >=1.1, the protrusion element is arranged around the lens axis.

The lens of the application, in use, light source is matched with incident area, the light that light source issues has incident area refraction Into lens, part of light reflects lens by the first exit area, and some light is then to be refracted to by incident area instead Region is penetrated, then reflexes to the second exit area through reflecting region, then lens, the first outgoing area are reflected by the second exit area The light that domain reflects forms the first hot spot unit in design lighting position, and the light that the second exit area reflects shines in design Bright position forms the second hot spot unit, and the first hot spot unit is matched with the second hot spot unit, obtains the illumination light of design shape Spot；

In the scheme of the application, the fit system of the first hot spot unit and the second hot spot unit can be and overlap, It can be and partially overlap, can also be the mode mutually spliced；

Further, when carrying out lens design, the illumination spot for meeting design requirement is formed, to exit area When structural parameters are adjusted, the structural parameters of reflecting region can also change therewith, specific to saturating involved in the application Mirror structure is: adjusting to the parameter of the second exit area, the structural parameters of reflecting region also need to be adjusted therewith, and anti- The parameter variations for penetrating region are again directly closely related with light spill-out, so, in this application, by the ginseng of the second exit area Number is set as 3 >=D1/H1 >=1.1, in the parameter, reflecting region is made to form corresponding argument structure, and the reflecting region institute The light of reflecting region spilling can be greatly decreased in the structural parameters of formation, so, when the second exit area is controlled in above-mentioned ginseng When in number, it can make lens that there is better light efficiency；

Further, in the lens of the application, protrusion element is also set up in the second exit area, due to protrusion element Setting, the surface of protrusion element is as optical surface, and for smooth surface, control of second exit area to light greatly improved Ability processed, and the promotion of the second exit area light control ability, also further increase the variable of reflecting region parameter, That is, being not provided with for the lens of protrusion element compared to exit area, when forming equal illumination hot spot, it is emitted unit The adjustable amount of lens provided with protrusion element, reflecting region is more wide in range, when carrying out reflecting region parameter selection, energy Light parameter few as far as possible is overflowed in enough selections, further to reduce light spill-out with this, further increases lens light efficiency；And And due to the setting of protrusion element, additionally it is possible to the further uniformity for improving illumination spot, when the position between lens and light source When setting generation small change, illumination spot can still have good uniformity, so also reducing the peace of light source and lens Fill required precision.

Preferably, in the plane coplanar with lens axis, it is located in the plane, and reflected through the protrusion element Light, before forming illumination spot, at least exist some light intersect.

In the lens of traditional structure, after each light beam reflects lens by exit facet, to before illumination spot, do not send out It is raw to intersect, it then is radiated at corresponding position according to design optical path, when light source position, which exists, to be changed, the incidence of each light beam When angle change of reflection, the light beam that lens reflect deflects, and causes the local location in region to be illuminated dark areas occur, i.e., The non-uniform situation of hot spot, so, in current fitting structure, the installation site required precision of light source is higher；

So in this application, due to the setting of protrusion element, in the plane for crossing lens axis, positioned at the plane At least there is some light and intersect in light after protrusion element, that is, so that in the light for forming hot spot, wherein Some light is in crossing condition, in this way, when small change occurs for the relative position of light source and lens, although light refraction Angle can also change, and still, for crosslight occurs in these, the variation of refraction angle is only to hot spot marginal belt Centainly influence, that is, light spot shape is only influenced, and local dark areas can't be formed inside hot spot, so, still can The hot spot formed compared with high evenness reduces installation cost in this way, significantly reducing the requirement of lens Yu light source installation accuracy.

Preferably, in the plane coplanar with lens axis, it is located in the plane, and reflected through single protrusion element Light, before forming illumination spot, at least exist some light intersect.In the scheme of the application, so set It sets, so that intersecting between the light reflected by single protrusion element, the adequacy of light intersection greatly improved, in this way, On the one hand it is: when position changes between lens and light source, further ensures that the uniformity of hot spot；Another is also further Reduce reflecting region design difficulty, make the parameter of reflecting region as far as possible not spill over light as purpose of design.

Preferably, several micro-optics faces is additionally provided in the protrusion element.In this application, micro-optics face is The curved surface of protrusion can be can be to the optical unit that light is adjusted, these optical units, be also possible to small plane Unit further increases the adequacy of light intersection by the way that micro-optics face is arranged in protrusion element.

Preferably, in the plane coplanar with lens axis, when single protrusion element is there are when multiple section units, it is located at In the plane, and at least there is some before forming illumination spot in the light reflected through the single section units Light intersects.

In this application, when protrusion is cyclic annular or helical form or some other irregular shape, lens are being crossed On section, these shapes protrusion has multiple section units, such as when protrusion element is annular, then there are two opposite section Unit intersects between the light that same section units project in this application, in this way, further increasing light intersection Adequacy.

In this application, it is that light intersects before forming design illumination spot that above-mentioned light, which occurs to intersect,.

Preferably, the protrusion element is the ring-shaped circular around lens axis.In this application, protrusion element is arranged Make in circumferential any plane for crossing lens axis for ring-shaped, all there are the intersections of light, it is ensured that illumination spot is circumferential On it is uniform.

Preferably, the protrusion element is evenly arranged along the basal plane.It is arranged such, it is ensured that illumination spot radially equal It is even.

Preferably, mutually splice between the adjacent protrusion element.Through the light for being radiated at the region all raised single Member reflects lens, further increases the uniformity of illumination spot；For the lens arrangement of documents 1, comparing In the step exit area of file 1, for the region of draft, step is necessarily required to that there are certain inclination angle, the light of light source Beam is radiated on the incisal bevel, after reflecting lens, is distributed in illumination region, and veiling glare is formed, and the power of the part veiling glare takes Certainly in the size of the inclined surface and the size at inclination angle, the uniformity of hot spot can be greatly reduced；In this application, protrusion element Between mutually splice, avoid the problem of light beam between adjacent protrusion unit forms veiling glare, and then illumination light also greatly improved The uniformity of spot.

Preferably, 2.5 >=D1/H1 >=1.5.As 2.5 >=D1/H1 >=1.5, reflecting region is made to form corresponding structure ginseng Number is further sharply reduced in the structural parameters by the light that reflecting region is overflowed, so lens can be improved significantly Light efficiency.

Preferably, D1/H1=1.9 ± 0.1.When the second exit area is the parameter, the energy in corresponding reflecting region Enough to form more excellent parameter, when reflecting region is the parameter, light spill-out is minimum, and then greatly improves the light of lens Effect.

Preferably, the basal plane of second exit area is towards lens sunken inside, the tangent line of the basal plane and perpendicular to lens The angle of the plane of optical axis is α, and on the direction by small end to big end, α is gradually increased.The basal plane of second exit area is towards lens Sunken inside when α is gradually increased, is realized and is converged to the light that light source issues.

Preferably, the tangent line at the basal plane small end and the angle of the plane perpendicular to lens axis are α 1, the basal plane Tangent line at big end and the angle of the plane perpendicular to lens axis are 1≤35 ° of 2,0 °≤α of α；5°≤α2≤60°.When basal plane is adopted When with above-mentioned parameter, while can be realized to light convergence, additionally it is possible to which the control for further facilitating reflecting region parameter makes Light the lacking as far as possible overflowed by reflecting region.

Preferably, 1=18 ° ± 1 ° α, 2=35 ° ± 1 ° α.When the second exit area is the parameter, in corresponding reflection More excellent parameter is capable of forming in region, when reflecting region is the parameter, light spill-out is minimum, and then is greatly improved The light efficiency of lens.

Preferably, the protrusion element is covered with second exit area.After further raising light projects lens Intersect adequacy, moreover, also further expanding the shift range that relative position allows between lens and lamps and lanterns.

Preferably, the reflecting region has a big end and a small end, described anti-in the plane perpendicular to lens axis The cross sectional shape for penetrating region is gradually expanded on the direction by small end to big end, the small end of the reflecting region and big end away from From, it is H2 on the direction along the lens axis, is D2 on the direction perpendicular to the lens axis, 2 >=D2/H2 >= 0.5.When the second exit area uses above-mentioned structural parameters, the structural parameters of reflecting region are corresponding with, and in the parameter model Enclose it is interior preferably, make parameter 2 >=D2/H2 >=0.5 of reflecting region, in the range so that by reflecting region spilling light The light efficiency of lens can be further increased through few as far as possible.

It is further preferred that D2/H2=0.52 ± 0.05.When reflecting region uses the parameter, overflowed by reflecting region Light it is few, greatly improve the light efficiency of lens.

It is further preferred that the reflecting region towards far from lens direction protrude, the tangent line of the reflecting region and hang down It is directly β in the angle of the plane of lens axis, on the direction by small end to big end, β is gradually increased.

It is further preferred that the tangent line at the reflecting region small end and the angle of the plane perpendicular to lens axis are β 1, the angle of the tangent line at the exit area big end and the plane perpendicular to lens axis is β 2,1≤55 ° of 20≤β, 20≤β 2 ≤75°.When reflecting region use above-mentioned parameter, and limit β 1 and β 2 be above-mentioned numerical value when, can further reduce Overflow amount of light.

It is further preferred that 1=48 ° ± 1 ° β, 2=71 ° ± 1 ° β.When reflecting region uses the parameter, by echo area The light that domain is overflowed is few, greatly improves the light efficiency of lens.

Preferably, the reflecting region is the optical surface being spliced by several optical units, or is continuous smooth song Face, or be combination.By the way that several optical units is arranged, the control energy to reflecting region to light greatly improved Power also further improves the uniformity of illumination spot while further decreasing light spilling.

Preferably, the incident area include first incident area opposite with first exit area and with it is described anti- The second opposite incident area of region is penetrated, second incident area is surrounded on outside first incident area, and described second enters Region is penetrated with a big end and a small end, in the plane perpendicular to lens axis, the cross sectional shape of second incident area It is gradually expanded on the direction by small end to big end, the edge of the small end of second incident area and first incident area Connect.When being that light source matches, the light of light source is divided into low-angle light according to the size with optical axis included angle and is located at small High angle scattered light outside angle light, low-angle light is corresponding with the first incident area, high angle scattered light and the second incidence zone Domain is corresponding, in this way, controlling respectively low-angle light and high angle scattered light, further improves lens on light line Control ability, further, in this application, high angle scattered light is after reflecting region is reflected, and whole or part is again It is reflected by protrusion element and is gone out, and low-angle light portion is then reflected by the first exit area and is gone out, and the light of wide-angle is made It is on the one hand the beam distribution conducive to wide-angle in illumination spot periphery to intersect light beam, convenient for control light spot shape, moreover, When light source displacement, after the second exit area reflects, shooting angle can also change correspondingly wide-angle light beam, can also realize pair The adjustment of illumination spot shape, so, using the application lens when, additionally it is possible to pass through wanting to position for mobile lens and light source To adjust the shape of illumination spot.

Preferably, the second incident area small end is H3 on the direction along the lens axis at a distance from big end, It is D3,0≤D3/H3≤0.2 on the direction perpendicular to the lens axis.When the second incident area uses the parameter, energy Enough further light spill-outs for reducing reflecting region.

It is further preferred that D3/H3=0.05 ± 0.005.When the second incident area uses the parameter, by reflecting region The light of spilling is few, greatly improves the light efficiency of lens.

Preferably, the plane of the tangent line and lens axis of the end of second incident area far from the first incident area Angle is 1≤10 ° of 1,0 °≤γ of γ；Angle close to the plane of the tangent line and lens axis of the end of the first incident area is γ 2≤10 ° of 2,0 °≤γ.

It is further preferred that 1=3 ° ± 0.3 ° γ, 2=3 ° ± 0.3 ° γ.

The lens of the application, when the second exit area, reflecting region and the second incident area are respectively the knot of above-mentioned restriction When structure parameter, for conventional lenses structure, while realizing good hot spot uniformity, additionally it is possible to significantly reduce and overflow Amount light out, and then lens light efficiency is greatly improved, while also reducing the required precision of light source Yu lens relative position, easily Installation cost is installed and is reduced, also, beam angle can also be controlled by adjusting the relative position of light source and lens, And then control the shape of illumination spot.

Preferably, first exit area is the projecting surface far from the lens protrusion.The luminous energy of low-angle light is close Spend it is larger, using projecting surface, make this some light disperse, conducive to from the crosslights that protrusion element reflects carry out with shape At uniform light spots.

Preferably, first exit area is the optical surface being spliced by several optical units.

Preferably, the incident area is Fresnel optical surface.

Preferably, the incident area is corresponding with light source installation region, when any position of the light source in the installation region When setting, the light reflected by the exit area is formed with the uniform illumination spot of photic-energy transfer in design lighting position.

In the application due to being formed in the light of illumination spot, some light is crossing condition, so, when lens and light source Between relative position change, when changing value control at some region, after illumination spot shape changes, still can Guarantee the good uniformity, so, using the lens of the application, while realizing the good hot spot uniformity, light source is being installed It is moved in region, additionally it is possible to light spot shape is adjusted, so also improving the applicability of the application.

Preferably, the light source installation region is along the region that lens axis moves axially.That is, light source is along saturating When some section of mirror optical axis is mobile, illumination spot shape is changed correspondingly, and in the change procedure, and illumination spot guarantees good The uniformity.

Preferably, intersection is formed between the protrusion element and basal plane, width is between the intersection of single protrusion element D4, raised unit are H4,4≤D4/H4≤40,4≤D1/D4 relative to the height of projection of basal plane.As the D4/H4 of protrusion element When using above range with D1/D4, the second exit area has good even light effect and light control ability.

Further preferably, D4/H4=10 ± 0.1, D1/D4=36 ± 0.1.

Disclosed herein as well is a kind of lamps and lanterns, including said lens and the light source matched with the lens.

On the one hand the lamps and lanterns of the application are to significantly reduce the light overflowed by lens due to being using above-mentioned lens, Light efficiency greatly improved, on the other hand, additionally it is possible to reduce the assembly precision between light source and lens, and then reduce assembly cost and Assembly time.

Preferably, the lens have a light source installation region, when any position of the light source in the installation region, The light reflected by the exit area is formed with the uniform illumination spot of photic-energy transfer in design lighting position.So set It sets, allows the lamps and lanterns of the application by adjusting the relative position between lens and light source, obtain different shape beam angle Illumination spot, in this way, improving lamps and lanterns applicability.

Disclosed herein as well is a kind of lens design methods:

(1), according to the design requirement of target illumination hot spot, lens light-emitting window diameter and light beam angle value are determined；

(2), by the D1 of the second exit area and H1 control in the range of 3 >=D1/H1 >=1.1；

(3), under the premise of lens exit area projects light and meets step (1) beam angle requirement, echo area is adjusted The structural parameters in domain, and the light spill-out during the adjustment of simulated reflections region parameter；

(4) according to the analog result of light spill-out in reflecting region in step (3), selection light spill-out is minimum value When structural parameters of the corresponding structural parameters as reflecting region.

The illumination spot for meeting design requirement will be formed when carrying out lens design using the design method of the application, When being adjusted to the structural parameters of exit area, the structural parameters of reflecting region can also change therewith, specific to this Shen Please involved in lens arrangement, be: the parameter of the second exit area adjusted, the structural parameters of reflecting region also need therewith into Row adjustment, and the parameter variations of reflecting region are directly closely related with light spill-out, so, in this application, by second The parameter of exit area is set as 3 >=D1/H1 >=1.1, in the parameter, reflecting region is made to form corresponding argument structure, and The reflecting region is formed by the light that reflecting region spilling can be greatly decreased in structural parameters, so, when the second exit area When control is in above-mentioned parameter, it can make lens that there is better light efficiency.

Preferably, in the step (2), by the α 1 of the second exit area and α 2 control within the scope of parameters described below: 0 ° ≤α1≤35°；5°≤α2≤60°.When the second exit area is limited to the parameter value, it can further make reflecting region Light spill-out reduce, the further light efficiency for improving lens.

In conclusion by adopting the above-described technical solution, the beneficial effect of the application is:

The lens of the application can either ensure good light efficiency, and can reduce the lens arrangement of installation accuracy requirement；

The lamps and lanterns of the application can also be by adjusting opposite between lens and light source while ensuring good light efficiency Position obtains the illumination spot of different shape beam angle, in this way, improving lamps and lanterns applicability；

The lens design method of the application can greatly improve lens light efficiency.

Detailed description of the invention

Fig. 1 is to collimate LED lens in background technique and collimate the lens arrangement schematic diagram of LED light patent,

Fig. 2 is the light path schematic diagram of Fig. 1 lens,

Mark in Fig. 1 and 2: 20-LED lamp, 30- lens body, 31- incidence slot, first plane of incidence of 32-, 33- second are incident Face, the first exit facet of 34-, 35- reflective steps, 36- reflecting surface, 37- go out light table rank,

Fig. 3 is the lens arrangement that the second exit area is not provided with protrusion element,

Illumination curve distribution map when Fig. 4 is using Fig. 3 lens, when light source has displacement, at illumination spot；

Fig. 5 is the structural schematic diagram of the application lens arrangement；

Illumination curve distribution map when Fig. 6 is using the application lens arrangement, when light source has displacement, at illumination spot；

Fig. 7 is the application lens arrangement, the light path schematic diagram of the second exit area local location；

Fig. 8 is the partial enlarged view in Fig. 7 at E；

Fig. 9 is the rough schematic view that optical path is intersected on single section units in Fig. 8；

Figure 10 is the partial structural diagram of lens when micro-optics face being arranged in protrusion element；

Figure 11 is the mark schematic diagram of α, β and γ parameter in the application lens arrangement；

Figure 12 is the mark schematic diagram of H and D parameter in the application lens arrangement；

When Figure 13 is that light source is located at the position A1, A2 and A3, the simplification light path schematic diagram of lens；

Figure 14 is that the light when reflecting region spilling light of lens is more overflows schematic diagram；

Figure 15 is that the light when reflecting region spilling light of lens is less overflows schematic diagram；

Figure 16 is the mark schematic diagram of protrusion element parameter,

Marked in the figure: 1-lens, the first exit area 2-, the second exit area 3-, the reflecting region 4-, the first incidence zone 5- Domain, the second incident area of 6-, 7- protrusion element, 8- section units, 9- micro-optics face, A- optical axis, B- basal plane, C- light source.

Specific embodiment

Lower region is described in detail the utility model in conjunction with attached drawing.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

Specific embodiment:

A kind of lens, such as Fig. 5, shown in 7-13,

Incident area and exit area are equipped on the lens 1, between the exit area and incident area Outer side surface is formed with reflecting region 4, and the exit area includes the first exit area 2 and is surrounded on first exit area The second exit area 3 outside 2；

Second exit area 3 includes basal plane B and several protrusion elements 7 being arranged on the basal plane B, the basal plane B has a big end and a small end, on the plane perpendicular to 1 optical axis A of lens, the cross sectional shape of the basal plane B by small end extremely It is gradually expanded on the direction of big end, the small end of the basal plane B is on the direction along the 1 optical axis A of lens at a distance from big end H1 is D1 on the direction perpendicular to the 1 optical axis A of lens, and 3 >=D1/H1 >=1.1, the protrusion element 7 is around the lens 1 Optical axis A setting.

The lens 1 of present embodiment, in use, light source C is matched with incident area, the light that light source C is issued is by incidence Region is refracted into lens 1, and part of light reflects lens 1 by the first exit area 2, and some light is then by incidence zone Domain refracts to reflecting region 4, then reflexes to the second exit area 3 through reflecting region 4, then reflected by the second exit area 3 Lens 1, the light that the first exit area 2 reflects form the first hot spot unit, 3 folding of the second exit area in design lighting position The light of injection forms the second hot spot unit in design lighting position, and the first hot spot unit is matched with the second hot spot unit, obtained To the illumination spot of design shape；

In the scheme of present embodiment, the fit system of the first hot spot unit and the second hot spot unit can be and mutually be overlapped It is folded, it is also possible to partially overlap, can also be the mode mutually spliced；

Further, when carrying out the design of lens 1, the illumination spot for meeting design requirement is formed, to exit area Structural parameters when being adjusted, the structural parameters of reflecting region 4 can also change therewith, specific to involved by present embodiment And 1 structure of lens, be: the parameter of the second exit area 3 adjusted, the structural parameters of reflecting region 4 also need to carry out therewith Adjustment, and the parameter variations of reflecting region 4 are directly closely related with light spill-out, as shown in Figure 14 and Figure 15, so, In present embodiment, 3 >=D1/H1 >=1.1 are set by the parameter of the second exit area 3, as shown in figure 15, in the parameter It is interior, so that reflecting region 4 is formed corresponding argument structure, and the reflecting region 4 is formed by structure that echo area can be greatly decreased The light that domain 4 is overflowed, so, when the control of the second exit area 3 is in above-mentioned parameter, it can make lens 1 that there is better light Effect；Moreover, because the setting of protrusion element 7, additionally it is possible to the further uniformity for improving illumination spot, when lens 1 and light source C Between position occur small change when, illumination spot can still have good uniformity, thus also reduce light source C with The installation accuracy requirement of lens 1.

As preferred embodiment, on the basis of the said structure, further, in the plane coplanar with 1 optical axis A of lens On, it is located in the plane, and the light reflected through the protrusion element 7, before forming illumination spot, at least there are one Some light intersects, as shown in Fig. 7,8 and 9.

In the lens 1 of traditional structure, after each light beam reflects lens 1 by exit facet, to before illumination spot, not Intersect, is then radiated at corresponding position according to design optical path, when light source location of C, which exists, to be changed, each light beam When incident angle change of reflection, the light beam that lens 1 reflect deflects, and the local location in region to be illuminated is caused dark space occur The non-uniform situation in domain, i.e. hot spot, so, in current fitting structure, the installation site required precision of light source C is higher；

So in this application, due to the setting of protrusion element 7, in the plane for crossing 1 optical axis A of lens, being located at the plane Light after protrusion element 7, at least exist some light intersect, as shown in FIG. 7 and 8, that is, so that being formed In the light of hot spot, part of light is in crossing condition, in this way, when the generation of the relative position of light source C and lens 1 is smaller When variation, although light refraction angle can also change, for crosslight occurs in these, refraction angle Variation only hot spot marginal belt centainly is influenced, that is, only influence light spot shape, and can't be formed inside hot spot local Dark areas, so, it is still capable of forming the hot spot compared with high evenness, it is as shown in FIG. 6, in this way, significantly reducing lens 1 and light The requirement of source C installation accuracy, reduces installation cost.

It is on the basis of the said structure, further, as shown in FIG. 8 and 9 as preferred embodiment, with lens 1 In optical axis A coplanar plane, it is located in the plane, and the light reflected through single protrusion element 7, is forming illumination spot Before, at least there is some light and intersects.In the scheme of the application, so set, making by single protrusion element 7 It intersects between the light reflected, the adequacy of light intersection greatly improved, in this way, being on the one hand: when lens 1 and light source When position changes between C, the uniformity of hot spot is further ensured that；Another also further reduces reflecting region 4 and sets Count difficulty, make the parameter of reflecting region 4 as far as possible not spill over light as purpose of design.

As preferred embodiment, on the basis of the said structure, further, as shown in Figure 10, the protrusion is single Several micro-optics faces 9 is additionally provided in member 7.In this application, micro-optics face 9 be can be to the light that light is adjusted Unit is learned, these optical units can be the curved surface of protrusion, be also possible to small flat unit, by protrusion element 7 Micro-optics face 9 is set, the adequacy of light intersection is further increased.

It is on the basis of the said structure, further, as shown in FIG. 8 and 9 as preferred embodiment, with lens 1 In optical axis A coplanar plane, when single protrusion element 7 is there are when multiple section units 8, in the plane, and warp is single At least there is some light and intersect in the light that the section units 8 reflect before forming illumination spot.At this In embodiment, when protrusion is cyclic annular or helical form or some other irregular shape, on the section for crossing lens 1, These shapes protrusion has multiple section units 8, such as when protrusion element 7 is annular, then there are two opposite section units 8, in the present embodiment, intersect between the light that same section units 8 project, in this way, further increasing light intersection Adequacy.

In the present embodiment, it is that light is handed over before forming design illumination spot that above-mentioned light, which occurs to intersect, Fork.

Further, the protrusion element 7 is the ring-shaped circular around 1 optical axis A of lens.It in the present embodiment, will be convex It plays unit 7 and is set as ring-shaped and make in circumferential any plane for crossing 1 optical axis A of lens, all there are the intersections of light, it is ensured that It is uniform on illumination spot circumferential direction.

Further, the protrusion element 7 is evenly arranged along the basal plane B.It is arranged such, it is ensured that illumination spot is radially It is uniform.

Further, mutually splice between the adjacent protrusion element 7.The light for being radiated at the region is set all to pass through protrusion Unit 7 reflects lens 1, further increases the uniformity of illumination spot.

It is further preferred that 2.5 >=D1/H1 >=1.5.As 2.5 >=D1/H1 >=1.5, forms reflecting region 4 and correspond to Structural parameters, the light overflowed in the structural parameters by reflecting region 4 is further sharply reduced, so can be significantly Improve the light efficiency of lens 1.

It is further preferred that D1/H1=1.9.When the second exit area 3 is the parameter, in corresponding reflecting region 4 It is capable of forming more excellent parameter, when reflecting region 4 is the parameter, light spill-out is minimum, and then greatly improves lens 1 Light efficiency.

As preferred embodiment, on the basis of the said structure, further, the basal plane B of second exit area 3 Towards 1 sunken inside of lens, the tangent line of the basal plane B and the angle of the plane perpendicular to 1 optical axis A of lens are α, by small end to big end Direction on, α is gradually increased.The basal plane B of second exit area 3 is towards 1 sunken inside of lens, when α is gradually increased, realizes to light source C The light of sending converges.

It is further preferred that the tangent line at the basal plane B small end and the angle of the plane perpendicular to 1 optical axis A of lens are α 1, Tangent line at the basal plane B big end and the angle of the plane perpendicular to 1 optical axis A of lens are 1≤35 ° of 2,0 °≤α of α；5°≤α2≤ 60°.When basal plane B uses above-mentioned parameter, while can be realized to light convergence, additionally it is possible to further facilitate reflecting region The control of 4 parameters makes the light overflowed by reflecting region 4 lacking as far as possible.

It is further preferred that the protrusion element 7 is covered with second exit area 3.The further light that improves projects Intersection adequacy after lens 1, moreover, also further expanding the displacement model that relative position allows between lens 1 and lamps and lanterns It encloses.

As preferred embodiment, on the basis of the said structure, further, the reflecting region 4 has a big end With a small end, on the plane perpendicular to 1 optical axis A of lens, the cross sectional shape of the reflecting region 4 is in the side by small end to big end It being gradually expanded upwards, the small end of the reflecting region 4 is H2 on the direction along the 1 optical axis A of lens at a distance from big end, It is D2,2 >=D2/H2 >=0.5 on the direction perpendicular to the 1 optical axis A of lens.When the second exit area 3 uses above-mentioned knot When structure parameter, the structural parameters of reflecting region 4 are corresponding with, and in the parameter area preferably, make the parameter 2 of reflecting region 4 >=D2/H2 >=0.5 enables the light that is overflowed by reflecting region 4 to further increase lens 1 through few as far as possible in the range Light efficiency.

It is further preferred that D2/H2=0.52.When reflecting region 4 is using the parameter, the light that is overflowed by reflecting region 4 Line is few, greatly improves the light efficiency of lens 1.

It is further preferred that the reflecting region 4 towards far from lens 1 direction protrude, the tangent line of the reflecting region 4 with Angle perpendicular to the plane of 1 optical axis A of lens is β, and on the direction by small end to big end, β is gradually increased.

As preferred embodiment, on the basis of the said structure, further, cutting at 4 small end of reflecting region Line is β 1 with the angle of plane perpendicular to 1 optical axis A of lens, the tangent line at the exit area big end with perpendicular to 1 light of lens The angle of the plane of axis A is β 2,1≤55 ° of 20≤β, 2≤75 ° of 20≤β.When the above-mentioned parameter of the use of reflecting region 4, and limit Determine β 1 and β 2 be above-mentioned numerical value when, can further reduce spilling amount of light.

It is further preferred that β 1=48 °, β 2=71 °.When reflecting region 4 is using the parameter, overflowed by reflecting region 4 Light it is few, greatly improve the light efficiency of lens 1.

As preferred embodiment, on the basis of the said structure, further, the reflecting region 4 is by several light Learn unit spliced at optical surface, be perhaps continuous smooth surface or be combination.By the way that several optics is arranged The control ability to reflecting region 4 to light greatly improved in unit, while further decreasing light spilling, also into one The uniformity for improving illumination spot of step.

As preferred embodiment, on the basis of the said structure, further, the incident area includes and described The first opposite incident area 5 of one exit area 2 and second incident area 6 opposite with the reflecting region 4, described second enters Region 6 is penetrated to be surrounded on outside first incident area 5, second incident area 6 have a big end and a small end, perpendicular to In the plane of 1 optical axis A of lens, the cross sectional shape of the basal plane B is gradually expanded on the direction by small end to big end, and described second The side edge of the small end of incident area 6 and first incident area 5.When being that light source C is matched, the light of light source C is pressed Low-angle light and the high angle scattered light outside low-angle light, low-angle light are divided into according to the size with optical axis A angle Corresponding with the first incident area 5, high angle scattered light is corresponding with the second incident area 6, in this way, respectively to low-angle light and High angle scattered light is controlled, and further improves lens 1 to the control ability of light, further, in present embodiment In, high angle scattered light is after reflecting region 4 is reflected, and all or part is reflected by protrusion element 7 again, and small angle Degree light portion is then reflected by the first exit area 2 and is gone out, and the light of wide-angle is as light beam is intersected, and is on the one hand conducive to big The beam distribution of angle is in illumination spot periphery, convenient for control light spot shape, moreover, when light source C displacement, wide-angle light beam warp After the refraction of second exit area 3, shooting angle can also be changed correspondingly, and can also realize the adjustment to illumination light shape of spot, so, Using present embodiment lens 1 when, additionally it is possible to by mobile lens 1 and light source C want illumination spot is adjusted to position Shape.

It is further preferred that D3/H3=0.05.When the second incident area 6 is using the parameter, overflowed by reflecting region 4 Light it is few, greatly improve the light efficiency of lens 1.

It is further preferred that the tangent line of end of second incident area 6 far from the first incident area 5 and 1 light of lens The angle of the plane of axis A is 1≤10 ° of 1,0 °≤γ of γ；Tangent line close to the end of the first incident area 5 is with 1 optical axis A's of lens The angle of plane is 2≤10 ° of 2,0 °≤γ of γ.

It is further preferred that γ 1=3 °, γ 2=3 °.

The lens 1 of present embodiment, when the second exit area 3, reflecting region 4 and the second incident area 6 are respectively above-mentioned When the structural parameters of restriction, for 1 structure of conventional lenses, while realizing good hot spot uniformity, additionally it is possible to big Amount light is overflowed in the reduction of width, and then greatly improves 1 light efficiency of lens, while also reducing the essence of light source C Yu 1 relative position of lens Degree requires, and easily installs and reduce installation cost, also, can also be by adjusting the relative position pair of light source C and lens 1 Beam angle is controlled, and then controls the shape of illumination spot.

As preferred embodiment, on the basis of the said structure, further, first exit area 2 is separate The projecting surface of 1 protrusion of lens.The luminous energy density of low-angle light is larger, using projecting surface, disperses this some light, benefit It carries out cooperatively forming uniform light spots in the crosslights reflected by protrusion element 7.

It is further preferred that first exit area 2 is the optical surface being spliced by several optical units.

It is further preferred that the incident area is Fresnel optical surface.

It is further preferred that the incident area is corresponding with the installation region light source C, when light source C is in the installation region Any position when, the light that is reflected by the exit area is formed with photic-energy transfer in design lighting position and uniformly shines Mingguang City's spot.

In present embodiment due to being formed in the light of illumination spot, some light is crossing condition, so, when lens 1 Relative position changes between light source C, when changing value control is at some region, after illumination spot shape changes, It can still guarantee the good uniformity, so, using the lens 1 of present embodiment, realizing the same of the good hot spot uniformity When, light source C is moved in installation region, additionally it is possible to light spot shape is adjusted, so also improving the applicability of present embodiment.

As preferred embodiment, on the basis of the said structure, further, the installation region the light source C is along saturating The region of 1 optical axis A of mirror axial movement.That is, light source C is along 1 optical axis A some section of lens when moving, illumination spot shape Shape changes correspondingly, and in the change procedure, and illumination spot guarantees the good uniformity；As shown in figure 15, it is light source C Light path schematic diagram when 1 optical axis A of lens upper three different locations；Since in the area, light source C is for phase between lens 1 It changes to position, the illumination spot of lens 1 still has the good uniformity, only brings and changes to light spot shape Become, so be, the lens 1 of the application also have focusing action, that is, by adjust between light source C and lens 1 want to position come The size of hot spot is controlled, i.e. control beam angle.

As preferred embodiment, on the basis of the said structure, further, as shown in figure 16, the protrusion is single It is formed with intersection between 7 and basal plane B of member, width is D4 between the intersection of single protrusion element 7, and raised unit is relative to basal plane The height of projection of B is H4,4≤D4/H4≤40,4≤D1/D4.When the D4/H4 and D1/D4 of protrusion element 7 use above range When, the second exit area 3 has good even light effect and light control ability.

Further preferably, D4/H4=10, D1/D4=36.

Present embodiment also discloses a kind of lamps and lanterns,

Including above-mentioned lens 1 and the light source C matched with the lens 1.

On the one hand the lamps and lanterns of present embodiment are to significantly reduce to be overflowed by lens 1 due to being using above-mentioned lens 1 Light, light efficiency greatly improved, on the other hand, additionally it is possible to reduce the assembly precision between light source C and lens 1, and then reduce Assembly cost and assembly time.

As preferred embodiment, on the basis of the said structure, further, the lens 1 are installed with a light source C Region, when any position of the light source C in the installation region, the light reflected by the exit area is illuminated in design The uniform illumination spot of photic-energy transfer is formed at position.So set, allow the lamps and lanterns of present embodiment by adjusting Relative position between lens 1 and light source C obtains the illumination spot of different shape beam angle, such as above-mentioned, also makes the application Lamps and lanterns there is focusing ability, that is, it is as shown in figure 15, by adjust between light source C and lens 1 want light is controlled to position The size of spot, i.e. control beam angle, and then greatly improve the applicability of lamps and lanterns.

Present embodiment also discloses a kind of 1 design method of lens:

(1), according to the design requirement of target illumination hot spot, 1 light-emitting window diameter of lens and light beam angle value are determined；

(2), the D1 and H1 of the second exit area 3 are controlled in the range of 3 >=D1/H1 >=1.1；

(3), under the premise of 1 exit area of lens projects light and meets step (1) beam angle requirement, echo area is adjusted The structural parameters in domain 4, and the light spill-out in 4 parameter tuning process of simulated reflections region；

(4) according to the analog result of 4 light spill-out of reflecting region in step (3), choosing light spill-out is minimum Structural parameters of the corresponding structural parameters as reflecting region 4 when value.

The illumination spot for meeting design requirement will be formed when carrying out the design of lens 1 using the design method of the application, When the structural parameters to exit area are adjusted, the structural parameters of reflecting region 4 can also change therewith, specific to this 1 structure of lens involved in applying is: adjusting to the parameter of the second exit area 3, the structural parameters of reflecting region 4 also need It is adjusted therewith, and the parameter variations of reflecting region 4 are directly closely related with light spill-out, so, in this application, 3 >=D1/H1 >=1.1 are set by the parameter of the second exit area 3, in the parameter, reflecting region 4 are made to form corresponding parameter Structure, and the reflecting region 4 is formed by the light that the spilling of reflecting region 4 can be greatly decreased in structural parameters, so, when second When the control of exit area 3 is in above-mentioned parameter, it can make lens 1 that there is better light efficiency.

It is further preferred that in the step (2), by the α 1 of the second exit area 3 and α 2 control in parameters described below model In enclosing: 1≤35 ° of 0 °≤α；5°≤α2≤60°.When the second exit area 3 is limited to the parameter value, can further make The light spill-out of reflecting region 4 is reduced, the further light efficiency for improving lens 1.

Experimental example:

(1) when the parameter value of the second exit area 3 are as follows: 3 >=D1/H1 >=1.1 are directed to 1 exit area of lens folding For irradiant beam angle is used as 1 design object of lens for 36 °, value: at 1≤35 ° of 0 °≤α, 2≤60 ° of 5 °≤α,

The corresponding parameter in the anti-region of lens 1 are as follows: 1≤55 ° of 2 >=D2/H2 >=0.5,20 °≤β, 2≤75 ° of 20 °≤β；

The corresponding parameter of 1 second incident area of lens 6 are as follows: 1≤10 ° of 0≤D3/H3≤0.2,0 °≤γ, 0 °≤γ 2≤ 10°。

It is directed to 1 structure of lens of above-mentioned parameter, light source C is set at incident area, and the luminous diameter of light source C is Z, lens 1 optical exit bore is X, Z/X=1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1, using above-mentioned ginseng The lens 1 of table structure deduct interface reflection with after material absorption, and the theoretical luminous flux of exit area is φ=70~95.

(2) when the parameter value of the second exit area 3 are as follows: D1/H1=1.03 is directed to the refraction of 1 exit area of lens For the beam angle of light is used as 1 design object of lens for 36 ° out, value: at 1≤35 ° of 0 °≤α, 2≤60 ° of 5 °≤α,

The corresponding parameter in the anti-region of lens 1 are as follows: 1≤60 ° of D2/H2=0.49,55 °≤β, 2≤80 ° of 75 °≤β；

The corresponding parameter of 1 second incident area of lens 6 are as follows: 1≤10 ° of D3/H3=0.05,0 °≤γ, 2≤10 ° of 0 °≤γ.

It is directed to 1 structure of lens of above-mentioned parameter, light source C is set at incident area, and the luminous diameter of light source C is Z, lens 1 optical exit bore is X, Z/X=1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1, using above-mentioned ginseng The lens 1 of table structure, after deducting interface reflection and material absorption, theoretical luminous flux φ: less than 70 of exit area, such as Figure 14 institute Show.

(3) when the parameter value of the second exit area 3 are as follows: D1/H1=1.9 is directed to and is reflected with 1 exit area of lens For the beam angle of light is used as 1 design object of lens for 36 °, value: when α 1=18 °, α 2=35 °,

The corresponding parameter in the anti-region of lens 1 are as follows: 1=48 ° of D2/H2=0.52, β, β 2=71 °；

The corresponding parameter of 1 second incident area of lens 6 are as follows: 1=3 ° of D3/H3=0.05, γ, γ 2=3 °.

It is directed to 1 structure of lens of above-mentioned parameter, light source C is set at incident area, and the luminous diameter of light source C is Z, lens 1 optical exit bore is X, Z/X=1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1, using above-mentioned ginseng The lens 1 of table structure, after deducting interface reflection and material absorption, theoretical luminous flux φ: 95 of exit area, as shown in figure 15.

(4) when the parameter value of the second exit area 3 are as follows: D1/H1=3.5 is directed to and is reflected with 1 exit area of lens For the beam angle of light is used as 1 design object of lens for 36 °, value: at 1≤35 ° of 0 °≤α, 2≤60 ° of 5 °≤α,

The corresponding parameter in the anti-region of lens 1 are as follows: 1≤20 ° of D2/H2=2.5,10 °≤β, 2≤20 ° of 10 °≤β；

The corresponding parameter of 1 second incident area of lens 6 are as follows: 1≤10 ° of D3/H3=0.05,0 °≤γ, 2≤10 ° of 0 °≤γ.

It is directed to 1 structure of lens of above-mentioned parameter, light source C is set at incident area, and the luminous diameter of light source C is Z, lens 1 optical exit bore is X, Z/X=1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1, using above-mentioned ginseng The lens 1 of table structure, after deducting interface reflection and material absorption, theoretical luminous flux φ: less than 70 of exit area.

(5) when the parameter value of the second exit area 3 are as follows: 3 >=D1/H1 >=1.1 are directed to 1 exit area of lens folding For irradiant beam angle is used as 1 design object of lens for 36 °, value: when 35 °≤α, 1,60 °≤α 2,

The corresponding parameter in the anti-region of lens 1 are as follows: 0.4 ° >=D2/H2 >=0.3 °, 1≤65 ° of 55 °≤β, 2≤75 ° of 20 °≤β；

The corresponding parameter of 1 second incident area of lens 6 are as follows: 1≤10 ° of 0≤D3/H3≤0.05,0 °≤γ, 0 °≤γ 2≤ 10°。

It is directed to 1 structure of lens of above-mentioned parameter, light source C is set at incident area, and the luminous diameter of light source C is Z, lens 1 optical exit bore is X, Z/X=1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1, using above-mentioned ginseng The lens 1 of table structure, after deducting interface reflection and material absorption, theoretical luminous flux φ: less than 65 of exit area.

Through above-mentioned comparison it is found that in the design of 1 structure of lens, by controlling the second exit area 3 in 3 >=D1/H1 In >=1.1 ranges, be formed by reflecting region 4 structural parameters can reduction light spill-out as far as possible, and then have lens 1 There is higher light efficiency, and further by the α 1 of the second exit area 3 and α 2 control at 1≤35 ° of 0 °≤α, 2≤60 ° of 5 °≤α In range, the structural parameters of reflecting region 4 can be further limited, it is further to reduce light spill-out.

Hereinafter, reflecting the beam angle of light using 1 exit area of lens as 36 ° as 1 design object of lens, in incidence zone Light source C is set at domain, and light source C shines diameter as Z, and the optical exit bore of lens 1 is X, Z/X=1/7.8, and makes incidence zone The luminous flux that domain enters lens 1 is 100, deducts interface reflection with after material absorption, the theoretical luminous flux φ of exit area chooses Corresponding φ when different D1/H1 values, following table:

Through above table it is found that as 3 >=D1/H1 >=1.1, φ value is more excellent, lens 1 can be made to have good Light efficiency, as 2.5 >=D1/H1 >=1.5, φ value can reach higher level, and as D1/H1=1.9, φ value reaches 96, this When, lens 1 have extremely excellent light efficiency.

Below are as follows: the specific embodiment that light source C is moved in installation region:

As shown in fig. 13 that, there are three positions, respectively A1, A2 and A3 for tool in the illumination of lens 1:

(1) value D1/H1=1.03, D2/H2=0.49, D3/H3=0.05, the optical exit bore of lens 1 are X, Z/X =1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1,

Using the lens 1 of above-mentioned parameter structure, after deducting interface reflection and material absorption, the theoretical luminous flux of exit area For φ:

A: when light source C is located at the position A1: beam angle is 15 °, φ=96；

B: when light source C is located at the position A2: beam angle is 22 °, φ=85；

C: when light source C is located at the position A3: beam angle is 36 °, φ=75.

(2) value D1/H1=1.5, D2/H2=0.5, D3/H3=0.05, the optical exit bore of lens 1 are X, Z/X= 1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1,

Using the lens 1 of above-mentioned parameter structure, after deducting interface reflection and material absorption, the theoretical luminous flux of exit area For φ:

A: when light source C is located at the position A1: beam angle is 15 °, φ=97；

B: when light source C is located at the position A2: beam angle is 22 °, φ=93；

C: when light source C is located at the position A3: beam angle is 36 °, φ=90.

(3) value D1/H1=1.9, D2/H2=0.52, D3/H3=0.05, the optical exit bore of lens 1 are X, Z/X =1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1,

Using the lens 1 of above-mentioned parameter structure, after deducting interface reflection and material absorption, the theoretical luminous flux of exit area For φ:

A: when light source C is located at the position A1: beam angle is 15 °, φ=98；

B: when light source C is located at the position A2: beam angle is 22 °, φ=96；

C: when light source C is located at the position A3: beam angle is 36 °, φ=95.

(4) value D1/H1=2.1, D2/H2=0.55, D3/H3=0.05, the optical exit bore of lens 1 are X, Z/X =1/7.8, and incident area is made to enter the luminous fluxes 100 of lens 1,

Using the lens 1 of above-mentioned parameter structure, after deducting interface reflection and material absorption, the theoretical luminous flux of exit area For φ:

A: when light source C is located at the position A1: beam angle is 15 °, φ=98；

B: when light source C is located at the position A2: beam angle is 22 °, φ=96；

C: when light source C is located at the position A3: beam angle is 36 °, φ=95.

(5) value D1/H1=3.0, D2/H2=2, D3/H3=0.05, the optical exit bore of lens 1 are X, Z/X=1/ 7.8, and incident area is made to enter the luminous fluxes 100 of lens 1,

Using the lens 1 of above-mentioned parameter structure, after deducting interface reflection and material absorption, the theoretical luminous flux of exit area For φ:

A: when light source C is located at the position A1: beam angle is 15 °, φ=85；

B: when light source C is located at the position A2: beam angle is 22 °, φ=80；

C: when light source C is located at the position A3: beam angle is 36 °, φ=65.

By it is above-mentioned it is found that using the application lens 1, when light source C is moved in the installation region light source C, ensuring to shine Under the premise of Mingguang City's spot is uniform, the adjustment to beam angle is realized, and then realize the adjustment to illumination light shape of spot, and controlling When making 3 structural parameters of the second exit area in the range of 3 >=D1/H1 >=1.1, reflecting region 4 forms corresponding parameter, reflection Region 4 can be greatly reduced light spilling, lens 1 is made to have good light efficiency under the state modulator.

Above embodiments are only to illustrate the utility model and not limit technical solution described in the utility model, to the greatest extent Pipe this specification has been carried out detailed description to the utility model referring to above-mentioned each embodiment, but the utility model not office It is limited to above-mentioned specific embodiment, therefore any pair of the utility model is modified or equivalent replacement；And all do not depart from invention Spirit and scope technical solution and its improvement, should all cover in the scope of the claims of the utility model.

Claims (31)

1. a kind of lens are equipped with incident area and exit area on the lens, it is located at the exit area and incident area Between outer side surface be formed with reflecting region, the exit area includes the first exit area and is surrounded on first outgoing The second exit area outside region；

It is characterized in that, second exit area includes basal plane and several protrusion elements for being arranged on the basal plane, hanging down Directly in the plane of lens axis, the cross sectional shape of the basal plane is gradually expanded on the direction by small end to big end；

The small end of the basal plane is H1 on the direction along the lens axis, perpendicular to the lens at a distance from big end It is D1,3 >=D1/H1 >=1.1 on the direction of optical axis；

The protrusion element is arranged around the lens axis.

2. lens according to claim 1, which is characterized in that in the plane coplanar with lens axis, be located at the plane At least there is some light and hand in light that is interior, and reflecting through the protrusion element before forming illumination spot Fork.

3. lens according to claim 2, which is characterized in that in the plane coplanar with lens axis, be located at the plane At least there is some light and hand in light that is interior, and reflecting through single protrusion element before forming illumination spot Fork.

4. lens according to claim 2, which is characterized in that in the plane coplanar with lens axis, when single protrusion Unit is located in the plane there are when multiple section units, and the light reflected through the single section units, is being formed Before illumination spot, at least there is some light and intersect.

5. lens according to any one of claims 1-4, which is characterized in that be additionally provided in the protrusion element several Micro-optics face.

6. lens according to any one of claims 1-4, which is characterized in that the protrusion element is covered with described second and goes out Penetrate region.

7. lens according to claim 1, which is characterized in that 2.5 >=D1/H1 >=1.5.

8. lens according to claim 7, which is characterized in that D1/H1=1.9 ± 0.1.

9. lens described in -4,7 and 8 any one according to claim 1, which is characterized in that the base of second exit area Lens sunken inside is faced, the tangent line of the basal plane and the angle of the plane perpendicular to lens axis are α, by small end to big end On direction, α is gradually increased.

10. lens according to claim 7, which is characterized in that tangent line at the basal plane small end with perpendicular to lens light The angle of the plane of axis is α 1, and the tangent line at the basal plane big end and the angle of the plane perpendicular to lens axis are 2,0 °≤α of α 1≤35°；5°≤α2≤60°.

11. lens according to claim 7, which is characterized in that 1=18 ° ± 1 ° α, 2=35 ° ± 1 ° α.

12. according to claim 1-4, lens described in 7-8 and 10-11 any one, which is characterized in that the reflecting region tool Have a big end and a small end, in the plane perpendicular to lens axis, the cross sectional shape of the reflecting region by small end to big It is gradually expanded on the direction at end, the small end of the reflecting region is on the direction along the lens axis at a distance from big end H2 is D2,2 >=D2/H2 >=0.5 on the direction perpendicular to the lens axis.

13. lens according to claim 12, which is characterized in that D2/H2=0.52 ± 0.05.

14. lens according to claim 13, which is characterized in that the reflecting region is protruded towards the direction far from lens, The tangent line of the reflecting region is β with the angle of plane perpendicular to lens axis, on the direction by small end to big end, β by It is cumulative big.

15. lens according to claim 14, which is characterized in that tangent line at the reflecting region small end with perpendicular to saturating The angle of the plane of mirror optical axis is β 1, and the angle of the tangent line at the exit area big end and the plane perpendicular to lens axis is 1≤55 ° of 2,20 °≤β of β；20°≤β2≤75°.

16. lens according to claim 14, which is characterized in that 1=48 ° ± 1 ° β, 2=71 ° ± 1 ° β.

17. lens described in -4,7 or 8 any one according to claim 1, which is characterized in that the reflecting region is by several The optical surface that optical unit is spliced into perhaps is continuous smooth surface or is combination.

18. according to claim 1-4, lens described in 7-8 and 10-11 any one, which is characterized in that the incident area packet First incident area opposite with first exit area and second incident area opposite with the reflecting region are included, it is described Second incident area is surrounded on outside first incident area, and second incident area has a big end and a small end, is being hung down Directly in the plane of lens axis, the cross sectional shape of second incident area gradually expands on the direction by small end to big end Greatly, the side edge of the small end of second incident area and first incident area.

19. lens according to claim 18, which is characterized in that the second incident area small end at a distance from big end, It is H3 on the direction along the lens axis, is D3,0≤D3/H3≤0.2 on the direction perpendicular to the lens axis.

20. lens according to claim 19, which is characterized in that D3/H3=0.05 ± 0.005.

21. lens described in 9 or 20 according to claim 1, which is characterized in that second incident area is far from the first incidence zone The angle of the plane of the tangent line and lens axis of the end in domain is 1≤10 ° of 1,0 °≤γ of γ；Close to the end of the first incident area Tangent line and the angle of plane of lens axis be 2≤10 ° of 2,0 °≤γ of γ.

22. lens according to claim 19, which is characterized in that 1=3 ° ± 0.3 ° γ, 2=3 ° ± 0.3 ° γ.

23. lens described in -4,7 and 8 any one according to claim 1, which is characterized in that first exit area is court Projecting surface far from incident area side protrusion.

24. lens according to claim 23, which is characterized in that first exit area is to be spelled by several optical units The optical surface being connected into.

25. lens described in -4,7 and 8 any one according to claim 1, which is characterized in that the incident area is Fresnel Optical surface.

26. lens described in -4,7 and 8 any one according to claim 1, which is characterized in that the incident area is corresponding with light Source installation region, when any position of the light source in the installation region, the light reflected by the exit area is being set The uniform illumination spot of photic-energy transfer is formed at meter lighting position.

27. lens according to claim 26, which is characterized in that the light source installation region is axially to move along lens axis Dynamic region.

28. according to claim 1-4, lens described in 7-8 and 10-11 any one, which is characterized in that the protrusion element with Intersection is formed between basal plane, width is D4, protrusion of the raised unit relative to basal plane between the intersection of single protrusion element Height is H4,4≤D4/H4≤40,4≤D1/D4.

29. lens according to claim 28, which is characterized in that D4/H4=10 ± 0.1, D1/D4=36 ± 0.1.

30. a kind of lamps and lanterns, which is characterized in that match including lens described in claim 1-29 any one and with the lens The light source of conjunction.

31. lamps and lanterns according to claim 30, which is characterized in that the lens have a light source installation region, work as light source When any position in the installation region, the light reflected by the exit area is formed in design lighting position The uniform illumination spot of photic-energy transfer.