CN202769543U - Mixed-light lens with adjustable beam angles - Google Patents
Mixed-light lens with adjustable beam angles Download PDFInfo
- Publication number
- CN202769543U CN202769543U CN2012204654006U CN201220465400U CN202769543U CN 202769543 U CN202769543 U CN 202769543U CN 2012204654006 U CN2012204654006 U CN 2012204654006U CN 201220465400 U CN201220465400 U CN 201220465400U CN 202769543 U CN202769543 U CN 202769543U
- Authority
- CN
- China
- Prior art keywords
- polyhedron
- total reflection
- lens
- light mixing
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses a mixed-light lens with adjustable beam angles. The mix-light lens with the adjustable beam angles comprises a condensation part which is placed on the center area of the lens and a total reflection part which is placed on the periphery of the condensation part. The condensation part is a micro lens array which is composed of a plurality of micro lenses, the micro lens array is sequentially arrayed outwards in a layer-by-layer mode by using an optical axis as the center, and a plurality of micro lenses arrayed in the same layer are arrayed to be in a circle in an equal angle mode. The outer side reflecting surface of the total reflection part is a scale surface which is composed of a plurality of polyhedron scales, the scale surface is formed by the fact that the plurality of polyhedron scales are arrayed along the outer surface of the total reflection part from top to bottom in a layer-by-layer mode, and a plurality of polyhedron scales in the same layer are arrayed in an equal angle mode. The mix-light lens can change the beam angles, and meanwhile a multichip light emitting diode (LED) is enabled to illuminate light spots which are rounded and even in color temperature.
Description
Technical field
The utility model relates to a kind of light mixing lens, relates in particular to a kind ofly for multi-chip LED, light mixing lens that beam angle is adjustable, belongs to optical technical field.
Background technology
Traditional light mixing lens majority is the collector lens of plano-convex or biconvex simple in structure, does not have the design of total reflection.This lens can only be used for be adjusted the beam angle of single-chip LED, make it to irradiate in some position uniform hot spot.When this light mixing lens is used for multi-chip LED, because the one-tenth image effect of convex lens, hot spot can present a plurality of regularly arranged grid shadows, and when being used for the three-primary color LED that is formed by the red, green, blue chip, then can project and contain the hot spot of not planting the color color lump, very not attractive in appearance.For this reason, need to finish by the adjustable light mixing lens of a kind of beam angle the adjustment of beam angle, make multi-chip LED can irradiate uniform hot spot.
Also there is the light mixing lens of some adjustable focus to use the structure of total reflection in the prior art, be the adjustable total reflection lens of disclosed a kind of beam angle in the Chinese utility model of CN201637870U such as notification number, convex lens, the prism of side total reflection and the flange that is positioned at the lens top edge of optically focused in the middle of comprising.Wherein, the upper surface of convex lens is non-spherical surface, and lower surface is the Fresnel surface of ring grain, and the plane of incidence of prism indent is taper seat, and the prism lateral surface is curved surface, and the upper surface of prism is quadratic surface.The total reflection lens that this beam angle is adjustable by middle optically focused convex lens and the side total reflection prism special shape so that beam angle is adjustable continuously.
But in this type of light mixing lens, middle optically focused part and the total reflection part of outer rim all are comprised of smooth curved surface.When being used for multi-colored led chip, owing to the one-tenth image effect of convex lens, still can reflect the color lump of a plurality of grid shadows or different colours, can't reach the ideal effect of uniform light spots.In addition, because the aberration of convex lens, when such light mixing lens was used for white light LEDs, the situation that colour temperature was high, the edge colour temperature is low in the middle of the hot spot that casts out had was at the yellow circle of hot spot marginal existence.Therefore, this type of light mixing lens still can't make the outgoing hot spot of multi-chip LED reach uniform effect, needs to continue to improve.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of light mixing lens that can make multi-chip LED irradiate uniform light spots.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The light mixing lens that a kind of beam angle is adjustable comprises the optically focused part that is positioned at the zone, lens centre and the total reflection part that is positioned at described light collecting part minute outer rim, it is characterized in that:
The microlens array that the upper surface of described optically focused part is comprised of many lenticules, described microlens array is outwards successively arranged centered by optical axis successively, and many lenticules that same layer is arranged are equiangularly arranged circular;
The scale face that the outside reflecting surface of described total reflection part is comprised of a plurality of polyhedron scales, described scale face is successively to be arranged from top to bottom along the outer surface of described total reflection part by a plurality of polyhedron scales to form, and a plurality of polyhedron scales in the same layer scale are equiangularly arranged.
Wherein more preferably, described lenticule has the identical angle of divergence, and described polyhedron scale has the identical angle of divergence; And the described lenticular angle of divergence is identical with the angle of divergence of described polyhedron scale.
The utility model provides a kind of beam angle adjustable light mixing lens.This light mixing lens can be when changing beam angle, so that multi-chip LED irradiates circular, the more uniform hot spot of colour temperature.In addition, in this light mixing lens, optically focused part and total reflection partly have same focal point and focal length, so that focusing is consistent in the process that changes beam angle, identical with the spot size that total reflection partly produces by the optically focused part, in any adjustable beam angle scope, all be superimposed as uniform hot spot.
Description of drawings
Fig. 1 is the generalized section of light mixing lens provided by the utility model;
Fig. 2 is the front view of the adjustable light mixing lens of beam angle shown in Figure 1;
Fig. 3 is the top view of the adjustable light mixing lens of beam angle shown in Figure 1;
Fig. 4 is the mixed light principle schematic of total reflection part in the light mixing lens.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technology contents of the present utility model is elaborated.
As shown in Figure 1 to Figure 3, the light mixing lens that a kind of beam angle is adjustable comprises the optically focused part 1 that is positioned at the zone, lens centre and the total reflection part 2 that is located in optically focused part 1 outer rim.Wherein, when the light-emitting area center O point of multi-chip LED is positioned at the focal position of light mixing lens, the light that sends from the light-emitting area center O point of multi-chip LED, the light that the angle of itself and optical axis OZ is less, collected by middle optically focused part 1, the line convergence and in the scope of the angle of divergence ± Δ θ, carry out mixed light of going forward side by side; The light that the angle of itself and optical axis OZ is larger is collected by the total reflection part 2 of outer rim, also assembles and carry out mixed light in the scope of the angle of divergence ± Δ θ.
Wherein, optically focused part 1 is rounded, comprises that upper surface 3 and lower surface 10(see Fig. 1).The upper surface 3 of optically focused part 1 is sphere or circular arc, and the lower surface 10 of optically focused part 1 is the Fresnel surface of sphere, circular arc or annular.Total reflection part 2 comprises that inboard incidence surface 9, outside reflecting surface 4 and upside exiting surface 8(see Fig. 1), the inboard incidence surface 9 of total reflection part 2 is taper seat or cylinder, outside reflecting surface 4 is the fully reflecting surface of circular arc, and upside exiting surface 8 is circular-arc exiting surface.Thereby, form a unified incidence surface that is formed by the inboard incidence surface 9 of the lower surface 10 of optically focused part 1 and total reflection part 2 in the bottom of this light mixing lens, the unified exiting surface that is formed by the upside exiting surface 8 of the upper surface 3 of optically focused part 1 and total reflection part 2 one of the top of this light mixing lens formation.
The scale face that the outside reflecting surface 4 of in conjunction with Fig. 2 as can be known, total reflection part 2 is comprised of a plurality of polyhedron scales 5.Wherein, the angle of divergence of a plurality of polyhedron scales 5 ± Δ θ 1 is identical, each polyhedron scale 5 can be in the scope of ± Δ θ 1 mixed light, namely polyhedron scale 5 can be in full-shape be the scope of 2 Δ θ 1 mixed light.A plurality of polyhedron scales 5 are arranged in order, can be so that mixed light occurs respectively in all light through 2 total reflections of total reflection part in the scope of 2 Δ θ 1.In this light mixing lens, the scale face is successively arranged from top to bottom along the outer surface of total reflection part 2 by a plurality of polyhedron scales 5 and is formed, and a plurality of polyhedron scales 5 in the same layer scale are equiangularly arranged.The shape of this polyhedron scale 5 can for rhombus, hexagon, octagon etc., wherein be preferably diamond texture shape.More preferably, Δ θ can be between 3 °～5 ° value, wherein be preferably Δ θ=4 °.The outside reflecting surface 4 of total reflection part 2 is comprised of 10 * 36 parts polyhedron scale 5, and polyhedron scale 5 is the facet of diamond texture shape.
As shown in Figure 3, the microlens array that the upper surface 3 of optically focused part 1 is comprised of many lenticules, many lenticules have the identical angle of divergence ± Δ θ 2, this angle of divergence ± Δ θ 2 and polyhedron scale 5 the angle of divergence ± Δ θ 1 is identical, this microlens array can be so that mixed light occurs respectively in all light through 1 refraction of optically focused parts in the scope of 2 Δ θ 2.The arrangement mode of microlens array is as follows: the optical axis position at the upper surface 3 of optically focused part 1 is arranged a center lenticule 7, and the residue lenticule is outwards successively arranged centered by optical axis OZ successively, and many lenticules that same layer is arranged are equiangularly arranged circular.In this embodiment, the number of lenses N of every layer of arrangement and between the arrangement number of plies n outward of center, satisfy following formula: N=6n, wherein N, n are positive integer.Specifically, it is arranged according to circular array centered by optical axis OZ, and the center has a lenticule 7, from the center lenticule 7 that is positioned at optical axis position, lenticule outwards successively every layer arrange with 6 multiple.There is a center lenticule 7 center; First lap is 6 lenticules outward from the center, and lenticule carries out uniformly-spaced array according to 60 ° of identical angles; The second circle is 12 lenticules, and lenticule carries out uniformly-spaced array according to 30 ° of identical angles; The 3rd circle is 18 lenticules, and lenticule carries out uniformly-spaced array according to 20 ° of identical angles; N circle is respectively 6n lenticule, and lenticule ° carries out array according to identical angle (360/6n); The like.
In this light mixing lens, be circular by polyhedron scale face and microlens array with spot shaping, and by polyhedron scale face and microlens array to the low-angle mixed light effect of multi-chip LED, obtained uniform hot spot.Simultaneously, optically focused part 1 adopts identical material one-body molded with total reflection part 2, and this light mixing lens has identical refractive index.Optically focused part 1 has identical focus with total reflection part 2, and has identical focal length.When multi-chip LED 6 when optical axis OZ moves, 2 pairs of multi-chip LEDs 6 of optically focused part 1 and total reflection part have identical converging action, form onesize hot spot, can guarantee in any adjustable beam angle scope, be superimposed as uniform hot spot, can not form obvious bright ring and Crape ring.
As shown in Figure 1, multi-chip LED 6 is installed on the below of this light mixing lens, the base bottom a of multi-chip LED 6 can be in light mixing lens bottom b adjusting between the H place to the b of bottom, and the height of H equals the base thickness sum of focal length F and the multi-chip LED 6 of light mixing lens.When the bottom b that leaves light mixing lens as the pedestal a of multi-chip LED 6 was the H height, its output beam had minimum beam angle, and its spot size is minimum; When this light mixing lens moves toward the LED direction in the process of (or LED moves toward the direction of light mixing lens), spot size is ascending to gradually change; Until the base bottom a of the bottom b of light mixing lens and multi-chip LED 6 is when being in same plane, its output beam has maximum beam angle.In the process that relatively moves of multi-chip LED 6 and light mixing lens, beam angle changes, and the size of hot spot is adjusted.The polyhedron scale face of the microlens array by optically focused part 1 upper surface 3 and the outside reflecting surface 4 of total reflection part 2, this light mixing lens can carry out mixed light to multi-chip LED 6.Hereinafter in connection with Fig. 4 the mixed light principle of this light mixing lens is described.
Figure 4 shows that the mixed light principle of total reflection part 2 in the light mixing lens.When multi-chip LED 6 is positioned at the focal position of total reflection part 2, suppose to have a light O S to send from the centre of luminescence O point of multi-chip LED 6, incide on the inboard incidence surface 9 of total reflection part 2, center T point position through the scale T1-T on the polyhedron scale 5 that incides outside reflecting surface 4 after 2 refractions of total reflection part-T2, after the light of T point position reflection reflected through upside exiting surface 8, its emergent ray UV penetrated with the direction that is parallel to optical axis OZ.And incide light S1T1 and the S2T2 of scale T1-T-T2 marginal position, after its reflection ray T1U1 and T2U2 reflect through upside exiting surface 8, its emergent ray U1V1 and U2V2 and center emergent ray UV become respectively the angle of divergence of Δ θ, thereby this scale is so that light in the scope of 2 Δ θ mixed light has occured.Outside reflecting surface 4 is divided into many scales 5 according to the angle of 2 identical Δ θ, various angles of divergence are ± the outgoing beam stack of the small scale of Δ θ after, the more uniform light that can be formed on ± Δ θ in (being that full-shape is 2 Δ θ) scope distributes and COLOR COMPOSITION THROUGH DISTRIBUTION.
The angle of divergence of optically focused part 1 and total reflection part 2 is ± Δ θ, wherein Δ θ can be between 3 ° ~ 5 ° value, be preferably Δ θ=4 °.Because optically focused part 1 is identical with the angle of divergence of total reflection part 2, the optically focused part and the edge total reflection part that are positioned at the zone, lens centre of light mixing lens, mixed light with same range as, therefore after this two-part output beam stack, also can be at the more uniform mixed light of formation in ± Δ θ (being that full-shape the is 2 Δ θ) scope.
In light mixing lens provided by the utility model, optically focused part 1 has identical focus and focal length with total reflection part 2, therefore when the base bottom a of multi-chip LED 6 moves from the position of b bottom secondary optics to the bottom b of light mixing lens, the beam angle of its output beam can change from small to large, and that its hot spot can keep always is even.
In sum, the utility model provides a kind of beam angle adjustable light mixing lens, partly is comprised of with the total reflection that is positioned at light collecting part minute outer rim the optically focused part that is positioned at the zone, lens centre.This light collecting part divides and comprises upper surface and lower surface, this total reflection partly comprises inboard incidence surface, outside reflecting surface and upside exiting surface, wherein, the microlens array that the upper surface of optically focused part is comprised of many lenticules, the scale face that the outside reflecting surface of total reflection part is comprised of a plurality of polyhedron scales.The light mixing lens that this beam angle is adjustable, by the microlens array of optically focused part upper surface and the polyhedron scale face of total reflection part outside reflecting surface, the spot shaping that multi-chip LED can be sent is uniform circular light spot, the low-angle mixed light effect of the light that sends in the face of multi-chip LED by microlens array and polyhedron scale simultaneously, can eliminate the grid shadow and the polychrome color lump that are caused by multi-chip LED in the hot spot, namely obtain the uniform hot spot of colour temperature.In addition, owing to adopting optically focused part and total reflection part with same focal point and focal length, the light mixing lens that this beam angle is adjustable focusing in the process that changes beam angle is consistent, guaranteed that the hot spot size in any adjustable beam angle scope that is partly produced by optically focused part and total reflection is identical, can be superimposed as uniform hot spot, eliminated in the middle of the hot spot and the colour temperature difference at hot spot edge, can not produce inhomogeneous bright ring and Crape ring.
The above has been described in detail the adjustable light mixing lens of beam angle provided by the utility model.For one of ordinary skill in the art, any apparent change of under the prerequisite that does not deviate from the utility model connotation it being done all will consist of the utility model infringement of patent right, will bear corresponding legal liabilities.
Claims (6)
1. the light mixing lens that beam angle is adjustable comprises the optically focused part that is positioned at the zone, lens centre and the total reflection part that is positioned at described light collecting part minute outer rim, it is characterized in that:
The microlens array that the upper surface of described optically focused part is comprised of many lenticules, described microlens array is outwards successively arranged centered by optical axis successively, and many lenticules that same layer is arranged are equiangularly arranged circular;
The scale face that the outside reflecting surface of described total reflection part is comprised of a plurality of polyhedron scales, described scale face is successively to be arranged from top to bottom along the outer surface of described total reflection part by a plurality of polyhedron scales to form, and a plurality of polyhedron scales in the same layer scale are equiangularly arranged.
2. light mixing lens as claimed in claim 1 is characterized in that:
The lenticule number N of every layer of arrangement and satisfy following formula: N=6n between the arrangement number of plies n outward of center, wherein N, n are positive integer.
3. light mixing lens as claimed in claim 1 is characterized in that:
Described lenticule has the identical angle of divergence, and described polyhedron scale has the identical angle of divergence; And the described lenticular angle of divergence is identical with the angle of divergence of described polyhedron scale.
4. light mixing lens as claimed in claim 3 is characterized in that:
The described angle of divergence is ± Δ θ, wherein Δ θ value between 3 °～5 °.
5. light mixing lens as claimed in claim 1 is characterized in that:
Described polyhedron scale be shaped as diamond texture shape.
6. light mixing lens as claimed in claim 1 is characterized in that:
Described optically focused part partly has identical focus and focal length with described total reflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204654006U CN202769543U (en) | 2012-09-12 | 2012-09-12 | Mixed-light lens with adjustable beam angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204654006U CN202769543U (en) | 2012-09-12 | 2012-09-12 | Mixed-light lens with adjustable beam angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202769543U true CN202769543U (en) | 2013-03-06 |
Family
ID=47776111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204654006U Expired - Lifetime CN202769543U (en) | 2012-09-12 | 2012-09-12 | Mixed-light lens with adjustable beam angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202769543U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865549A (en) * | 2012-09-12 | 2013-01-09 | 北京星光影视设备科技股份有限公司 | Secondary optical lens with adjustable beam angle |
| CN103883978A (en) * | 2014-03-07 | 2014-06-25 | 东莞市浩霖光学实业有限公司 | LED integrated reflection cup lens |
| CN103900026A (en) * | 2014-04-21 | 2014-07-02 | 江南大学 | COB type LED light gathering TIR lens system and designing method |
| CN104534287A (en) * | 2014-11-10 | 2015-04-22 | 中国计量学院 | LED flashlight lens with adjustable far and near apertures |
| CN104864360A (en) * | 2015-05-27 | 2015-08-26 | 立达信绿色照明股份有限公司 | Lens structure |
| CN105221942A (en) * | 2015-10-28 | 2016-01-06 | 欧普照明股份有限公司 | A kind of lighting |
| CN112747289A (en) * | 2019-10-31 | 2021-05-04 | 罗布照明公司 | System and method for producing a mixed light distribution from an LED luminaire |
-
2012
- 2012-09-12 CN CN2012204654006U patent/CN202769543U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865549A (en) * | 2012-09-12 | 2013-01-09 | 北京星光影视设备科技股份有限公司 | Secondary optical lens with adjustable beam angle |
| CN103883978A (en) * | 2014-03-07 | 2014-06-25 | 东莞市浩霖光学实业有限公司 | LED integrated reflection cup lens |
| CN103900026A (en) * | 2014-04-21 | 2014-07-02 | 江南大学 | COB type LED light gathering TIR lens system and designing method |
| CN103900026B (en) * | 2014-04-21 | 2017-10-31 | 江南大学 | A kind of COB types LED optically focused TIR lens combinations and design method |
| CN104534287A (en) * | 2014-11-10 | 2015-04-22 | 中国计量学院 | LED flashlight lens with adjustable far and near apertures |
| CN104864360A (en) * | 2015-05-27 | 2015-08-26 | 立达信绿色照明股份有限公司 | Lens structure |
| CN104864360B (en) * | 2015-05-27 | 2023-05-02 | 漳州立达信光电子科技有限公司 | Lens structure |
| CN105221942A (en) * | 2015-10-28 | 2016-01-06 | 欧普照明股份有限公司 | A kind of lighting |
| CN112747289A (en) * | 2019-10-31 | 2021-05-04 | 罗布照明公司 | System and method for producing a mixed light distribution from an LED luminaire |
| CN112747289B (en) * | 2019-10-31 | 2023-06-06 | 罗布照明公司 | System and method for generating a mixed light distribution from an LED luminaire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202769543U (en) | Mixed-light lens with adjustable beam angles | |
| CN102865549A (en) | Secondary optical lens with adjustable beam angle | |
| CN103292247B (en) | Secondary optical lens of polyhedron | |
| CN105556374B (en) | For generating the optical system of Uniform Illumination | |
| CN203298189U (en) | LED light source with COB module | |
| CN107209392B (en) | Optical device with collimator and microlens array | |
| CN106850062B (en) | The optical receiver antenna of angle diversity type filled type compound parabolic concentrator | |
| CN102734673B (en) | Light-emitting diode (LED) illumination module | |
| CN102853374B (en) | LED (Light-Emitting Diode) stage lamp lens assembly and LED stage lamp | |
| CN104373896A (en) | Optical lens and lamp comprising same | |
| CN104373897B (en) | A kind of LED secondary lens and LED | |
| CN202791801U (en) | Lens group of LED (light-emitting diode) stage lamp and LED stage lamp | |
| CN105221942A (en) | A kind of lighting | |
| CN107687623A (en) | Double optical lens with free curved surface for LED car high beam | |
| CN106062475A (en) | Shell integrator | |
| CN203880607U (en) | Optical lens and LED lamp | |
| CN102901045B (en) | Fresnel Lenses for high-power LED light source | |
| CN205090204U (en) | Lighting lamp | |
| CN208886676U (en) | Lens and light source module group | |
| CN206514241U (en) | A kind of secondary lens combining structure of adjustable focus | |
| CN203363991U (en) | LED (light-emitting diode) secondary optical lens | |
| CN201661987U (en) | Non-imaging uniform light distribution lens | |
| CN208620294U (en) | A kind of lens with micro- striated structure | |
| CN103775977B (en) | Surface has the Down lamp plastic optics reflector of microlens array | |
| CN107246591A (en) | A kind of secondary lens combining structure of adjustable focus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |