CN104834031A - Multi-focus dodging lens and optical system - Google Patents
Multi-focus dodging lens and optical system Download PDFInfo
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- CN104834031A CN104834031A CN201410638075.2A CN201410638075A CN104834031A CN 104834031 A CN104834031 A CN 104834031A CN 201410638075 A CN201410638075 A CN 201410638075A CN 104834031 A CN104834031 A CN 104834031A
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- curved surface
- light
- total reflection
- optical lens
- multifocal
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/10—Bifocal lenses; Multifocal lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
Abstract
The invention discloses a multi-focus dodging lens comprising a transmission unit and a total-reflection unit capable of peripherally enclosing the transmission unit. The transmission unit comprises a first collimation incident surface and a second collimation incident surface, which are provided with circular calibers, and are arranged sequentially along the central light beam transmission direction. The first collimation incident surface comprises more than two different curved surfaces, and the curved surface distribution structure of the second collimation incident surface is the same as that of the first collimation incident surface. The total -reflection unit comprises an incident side surface, a total-reflection side surface, and an outgoing side surface. The incident side surface is used for connecting the first collimation incident surface and the total-reflection side surface, and the outgoing side surface is used for connecting the total-reflection side surface with the second collimation transmission surface. The total-reflection side surface comprises more than two different curved surfaces, and the curved surface distribution structure of the outgoing side surface is the same as that of the total-reflection side surface. The invention also discloses an optical system. The multi-focus dodging lens is advantageous in that the blue edge or yellow edge phenomenon caused by the color separation can be prevented, and the dodging effect is good.
Description
Technical field
The present invention relates to optical field, particularly relate to the even optical lens of a kind of multifocal and optical system.
Background technology
The white light that we see at ordinary times is generally by producing at the surface of blue-ray LED coating yellow fluorescent powder, being the complex light of blue light and gold-tinted.The light that LED sends all is dispersed, so generally need to carry out optically focused by lens.
But the difference of light refractive index in same medium of often kind of color, causes the light of different colours through lens, blue light is by the centroclinal transmission more toward lens, and gold-tinted is more toward the edge tilt transmission of lens, thus show color separated, even light effect is poor.
Summary of the invention
Based on this, be necessary the even optical lens of multifocal providing a kind of even light effect good.
In addition, a kind of optical system is also provided.
The even optical lens of a kind of multifocal, comprise transmission units and the total reflection unit for surrounding described transmission units from surrounding, it is circular and centrally the first collimated incident face of setting gradually of direction of beam propagation and the second collimation transmission plane that described transmission units comprises bore, and described first collimated incident face comprises two or more different curves; Described second collimation transmission plane is identical with the curved surface distributed architecture in described first collimated incident face;
Described total reflection unit comprises incident side, total reflection side and outgoing side; Described incident side is used for described first collimated incident face to be connected with described total reflection side, and described outgoing side is used for that described total reflection side and described second is collimated transmission plane and is connected; Described full reflection side face comprises two or more different curves, and described outgoing side is identical with the curved surface distributed architecture of described total reflection side.
Wherein in an embodiment, described first collimated incident face comprises the first surface being positioned at center and the second curved surface be connected with described first surface; Described second collimation transmission plane comprises the 3rd curved surface being positioned at center and the 4th curved surface be connected with described 3rd curved surface accordingly; Described first surface and the second curved surface are different curve, described 3rd curved surface and the 4th curved surface are different curve.
Wherein in an embodiment, the caliber size that the bore and described second in described first collimated incident face collimates transmission plane is equal.
Wherein in an embodiment, described incident side is curved surface.
Wherein in an embodiment, described full reflection side face comprises interconnective 5th curved surface and the 6th curved surface, and described exiting side face comprises interconnective 7th curved surface and the 8th curved surface accordingly; Described 5th curved surface and the 6th curved surface are different curve, described 7th curved surface and the 8th curved surface are different curve.
Wherein in an embodiment, the surface of described transmission units is provided with scale structure or compound eye structural.
Wherein in an embodiment, the surface of described total reflection unit is provided with scale structure or compound eye structural.
A kind of optical system, comprises LED light source, also comprises the even optical lens of above-mentioned multifocal.
The even optical lens of above-mentioned multifocal and optical system, described second collimation transmission plane is identical with the curved surface distributed architecture in described first collimated incident face, by arranging the first collimated incident face and the second collimation transmission plane that comprise two or more different curves accordingly, the outgoing side and total reflection side that comprise two or more different curves are set, the light of the central light beam transmitted is made to understand surrounding's inclination of past workplace because optically focused focus changes, thus the hot spot that the hot spot making the light of central light beam be formed and the light beyond central light beam are formed mixes, simultaneously, also the less light hot spot of angle has been mixed in the hot spot that the light of the wide-angle light beam being totally reflected out through side is formed, avoid color separated and the blue limit occurred or yellow limit phenomenon, even light effect is good, the inclination of light is separated the combination that can realize the multi beam ring-shaped light spot of different brightness, circular light spot and circular light spot and ring-shaped light spot in addition, and alternately, irradiation different objects, shows different primary and secondary effects to illuminating effect light and shade.
Accompanying drawing explanation
Fig. 1 is the transmission units structural representation of conventional lenses;
The hot spot schematic diagram that Fig. 2 is formed for middle lens embodiment illustrated in fig. 1;
Fig. 3 is the transmission units structural representation of the even optical lens of multifocal in an embodiment;
The hot spot schematic diagram that Fig. 4 is formed for the even optical lens of middle multifocal embodiment illustrated in fig. 3;
Fig. 5 is the total reflection cellular construction schematic diagram of the even optical lens of middle multifocal embodiment illustrated in fig. 3;
Fig. 6 is the even lens structure schematic diagram of multifocal in another embodiment;
Fig. 7 is the hot spot schematic diagram that the even optical lens of middle multifocal embodiment illustrated in fig. 6 is formed;
Fig. 8 is the optical system of an embodiment.
Embodiment
The even optical lens of a kind of multifocal, comprise transmission units and the total reflection unit for surrounding described transmission units from surrounding, it is circular and centrally the first collimated incident face of setting gradually of direction of beam propagation and the second collimation transmission plane that described transmission units comprises bore, and described first collimated incident face comprises two or more different curves; Described second collimation transmission plane is identical with the curved surface distributed architecture in described first collimated incident face;
Described total reflection unit comprises incident side, total reflection side and outgoing side; Described incident side is used for described first collimated incident face to be connected with described total reflection side, and described outgoing side is used for that described total reflection side and described second is collimated transmission plane and is connected; Described full reflection side face comprises two or more different curves, and described outgoing side is identical with the curved surface distributed architecture of described total reflection side.
Figure 1 shows that the transmission units structural representation of conventional lenses.
In Fig. 1, curved surface 102 and curved surface 104 are the curved surface of same type, and curved surface 106 and curved surface 108 are the curved surface of same type.The light 206 of central light beam is parallel rays 208 after lens curved surface 102 and curved surface 106, and light ray parallel is propagated toward workplace 210, the border circular areas of hot spot centre circle 11 encirclement as shown in Figure 2 of formation.Light 202 outside central light beam is parallel rays 204 after lens curved surface 104 and curved surface 108, and light ray parallel is propagated toward workplace 210, the annular region between the hot spot of formation circle 11 as shown in Figure 2 and circle 12.
Please refer to Fig. 3, is the transmission units structural representation of the even optical lens of multifocal in an embodiment.
In the present embodiment, described first collimated incident face comprises the first surface 302 being positioned at center and the second curved surface 304 be connected with first surface 302.Described second collimation transmission plane comprises the 3rd curved surface 306 being positioned at center and the 4th curved surface 308 be connected with the 3rd curved surface 306 accordingly.First surface 302 and the second curved surface 304 are different curve, and the 3rd curved surface 306 and the 4th curved surface 308 are different curve, and therefore, first surface 302 is different from the optically focused focus of the second curved surface 304, and the 3rd curved surface 306 is also different from the optically focused focus of the 4th curved surface 308.
Light 402 outside central light beam is parallel rays 404 successively after the second curved surface 304, the 4th curved surface 308, and light 404 is propagated toward workplace 410, the annular region between the first hot spot of formation circle 21 as shown in Figure 4 and circle 22.The light 406 of central light beam successively after first surface 302, the 3rd curved surface 306 because optically focused focus changes, become non-parallel light 408, the both sides of light 408 past workplace 410 a little tilt, the border circular areas that the second hot spot circle 23 as shown in Figure 4 of formation surrounds.First hot spot is blended in the second hot spot, the blue limit avoiding color separated or certain color to be occurred by absorbing or yellow limit phenomenon.
The light launched from LED is lambertian distribution, and the angle of divergence of beam is less, and its brightness is higher.Relatively, large than the light 402 outside central light beam of the luminous flux of the light 406 of central light beam, makes its Ray obliquity intersect mixing, the homogeneity of overall hot spot can be made again to improve simultaneously.
By regulating the face type of first surface 302 and the 3rd curved surface 306, changing its focus, just can change size and the energy distribution of circular light spot.Equally, by regulating the face type of the second curved surface 304 and the 4th curved surface 308, changing its focus, size and the energy distribution of ring-shaped light spot can be changed.
In the present embodiment, to collimate the caliber size of transmission plane equal for the bore and described second in described first collimated incident face.Be appreciated that in other embodiments, the bore in described first collimated incident face can also be less than the bore of described second collimation transmission plane.
Please refer to Fig. 5, is the total reflection cellular construction schematic diagram of the even optical lens of middle multifocal embodiment illustrated in fig. 3.
In the present embodiment, described total reflection unit comprises incident side 502, total reflection side and outgoing side; Incident side 502 is for being connected described first collimated incident face with described total reflection side, and described outgoing side is used for that described total reflection side and described second is collimated transmission plane and is connected.
Particularly, described full reflection side face comprises interconnective 5th curved surface 504 and the 6th curved surface 506, and described exiting side face comprises interconnective 7th curved surface 508 and the 8th curved surface 510 accordingly.5th curved surface 504 and the 6th curved surface 506 are different curve, and the 7th curved surface 508 and the 8th curved surface 510 are different curve, and therefore, the 5th curved surface 504 is different from the optically focused focus of the 6th curved surface 506, and the 7th curved surface 508 is also different from the optically focused focus of the 8th curved surface 510.
In the present embodiment, different curve can be that curved surface type is different, also can be that curved surface type is identical but Surface Parameters different.
The light 602 of wide-angle light beam enters the even optical lens of this multifocal after incident side 502 reflects, be totally reflected through the 5th curved surface 504, then be light 604 after passing through the 7th curved surface 508 transmission, light 604 is non-parallel light, the both sides of light past workplace 410 a little tilt, the annular region between the 3rd hot spot of formation circle 23 as shown in Figure 4 and circle 25.The light 606 that angle is less than light 602 enters the even optical lens of this multifocal after incident side 502 reflects, be totally reflected after the 6th curved surface 506, then be light 608 after passing through the 8th curved surface 510 transmission, light 608 is non-parallel light, light past workplace 410 a little centroclinal, the annular region between the 4th hot spot of formation circle 24 as shown in Figure 4 and circle 25.4th hot spot is blended in the 3rd hot spot, the blue limit avoiding color separated or certain color to be occurred by absorbing or yellow limit phenomenon.
Relatively, large than light 602 of the luminous flux of light 606, makes its Ray obliquity intersect mixing, the homogeneity of overall hot spot can be made to improve.
By regulating the face type of the 5th curved surface 504 and the 7th curved surface 508, changing its focus, just can change size and the energy distribution of the 3rd hot spot.Equally, by regulating the face type of the 6th curved surface 506 and the 8th curved surface 510, changing its focus, just can change size and the energy distribution of the 4th hot spot.
The change of focus is exactly the separation of focus in fact, is the even light in multiple regions hot spot being divided into multi beam ring-shaped light spot and circular light spot, has the effect of overlapping intersection, the even light of mixed light.Focus is separated multi beam ring-shaped light spot and the circular light spot that can realize different brightness, irradiates different objects, shows different primary and secondary effects.In addition, no matter all light is through transmission units or is totally reflected unit, all can not lose because of light emission reason.
In the present embodiment, incident side 502 is curved surface, and above-mentioned mentioned curved surface can be sphere or aspheric surface.When curved surface is anamorphic aspherical surface, circular light spot can become ellipse light spot.Wherein, cylinder, sine and cosine curved surface, quadric surface, hyperquadric, Zernike polynomial surface belong to aspheric a kind of particular form.
Be appreciated that in other embodiments, incident side 502 can also be curved surface.Described full reflection side face comprises the different curve of more than three kinds, and described exiting side face comprises the different curve of more than three kinds accordingly, and namely described outgoing side is identical with the curved surface distributed architecture of described total reflection side.
Further, in other embodiments, the surface of described transmission units can also be provided with scale structure or compound eye structural.The surface of described total reflection unit also can be provided with scale structure or compound eye structural.
In addition, Ray obliquity intersects and mixes, and the homogeneity of overall hot spot is improved greatly.Improve traditional spot center energy high, the phenomenon that ambient energy is low, appearance of also having avoided Huang to enclose.Ray obliquity is separated, and can realize multi beam ring-shaped light spot and the circular light spot of different brightness, irradiates different objects, shows different primary and secondary effects.
Particularly, as shown in Figure 6, be the even lens structure schematic diagram of multifocal in another embodiment.
Light 802 outside central light beam is parallel rays 804 after the second curved surface 504, the 4th curved surface 508.Light 804 is parallel to be propagated toward workplace 610, the annular region between the 5th hot spot of formation circle 30 as shown in Figure 7 and circle 31.The light 806 of central light beam is light 808 after first surface 502, the 3rd curved surface 506, and light 808 is non-parallel light, and the both sides of past workplace 610 a little tilt, the border circular areas that the 6th hot spot circle 32 as shown in Figure 7 of formation surrounds.5th hot spot is blended in the 6th hot spot, the blue limit avoiding color separated or certain color to be occurred by absorbing or yellow limit phenomenon.
The light launched from LED is lambertian distribution, issues angle less, and its brightness is higher.Relatively, large than the light 802 outside middle light beam of the luminous flux of the light 806 of central light beam, makes its Ray obliquity intersect mixing, the homogeneity of overall hot spot can be made again to improve simultaneously.
The low-angle light of LED light source is through lens unit transmission, and its light is not transmitted to total reflection unit, does not thus launch total reflection and loses.
By regulating the face type of first surface 502 and the 3rd curved surface 506, changing its focus, just can change size and the energy distribution of circular light spot.Equally, by regulating the face type of the second curved surface 504 and the 4th curved surface 508, changing its focus, size and the energy distribution of ring-shaped light spot can be changed.
The light 902 of wide-angle light beam reflects and enters the even optical lens of this multifocal behind incident side 702, be totally reflected through the 5th curved surface 704, then be light 904 after passing through the 7th curved surface 708 transmission, light 904 is non-parallel light, the both sides of light past workplace 610 a little tilt, the annular region between the 7th hot spot of formation circle 33 as shown in Figure 7 and circle 34.The light 906 that angle is less than high angle scattered light 902 enters the even optical lens of this multifocal after incident side 702 reflects, be totally reflected after the 6th curved surface 706, then be light 908 after passing through the 8th curved surface 710 transmission, light 908 is non-parallel light, the both sides of light past workplace 610 a little tilt, the annular region between the 8th hot spot of formation circle 35 as shown in Figure 7 and circle 36.
8th hot spot does not overlap with the 7th hot spot, is distributed as two ring-shaped light spots.Relatively, large than light 902 of the luminous flux of light 906, but due to 906 ring-shaped light spots formed area ratio 902 want large, therefore two ring-shaped light spot corresponding illumination difference not too large, the illumination showing as center circle irradiation main body is maximum, and the illumination of the secondary main body of two ring-shaped light spot irradiations is smaller.
The light of LED light source wide-angle light beam is through total reflection unit, and its light is not transmitted to transmission units, does not thus launch total reflection and loses.
By regulating the face type of the 5th curved surface 704 and the 7th curved surface 708, changing its focus, just can change size and the energy distribution of ring-shaped light spot.Equally, by regulating the face type of the 6th curved surface 706 and the 8th curved surface 710, change its focus, thus change size and the energy distribution of ring-shaped light spot.
Ray obliquity is separated the combination that can realize the multi beam ring-shaped light spot of different brightness, circular light spot and circular light spot and ring-shaped light spot, and alternately, irradiation different objects, shows different primary and secondary effects to illuminating effect light and shade.Both added space hierarchy, and different illuminating effect in the past can be built again, can be applicable to lamp affixed to the ceiling, pendent lamp, wall lamp, advertising lamp etc.
Please refer to Fig. 8, is the optical system of an embodiment, comprises LED light source 100 and integrating rod 200, also comprises the even optical lens 300 of above-mentioned multifocal.
The even optical lens of above-mentioned multifocal and optical system, described second collimation transmission plane is identical with the curved surface distributed architecture in described first collimated incident face, by arranging the first collimated incident face and the second collimation transmission plane that comprise two or more different curves accordingly, the outgoing side and total reflection side that comprise two or more different curves are set, the light of the central light beam transmitted is made to understand surrounding's inclination of past workplace because optically focused focus changes, thus the hot spot that the hot spot making the light of central light beam be formed and the light beyond central light beam are formed mixes, simultaneously, also the less light hot spot of angle has been mixed in the hot spot that the light of the wide-angle light beam being totally reflected out through side is formed, avoid color separated and the blue limit occurred or yellow limit phenomenon, even light effect is good, the inclination of light is separated the combination that can realize the multi beam ring-shaped light spot of different brightness, circular light spot and circular light spot and ring-shaped light spot in addition, and alternately, irradiation different objects, shows different primary and secondary effects to illuminating effect light and shade.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the even optical lens of multifocal, comprise transmission units and the total reflection unit for surrounding described transmission units from surrounding, it is characterized in that, it is circular and centrally the first collimated incident face of setting gradually of direction of beam propagation and the second collimation transmission plane that described transmission units comprises bore, and described first collimated incident face comprises two or more different curves; Described second collimation transmission plane is identical with the curved surface distributed architecture in described first collimated incident face;
Described total reflection unit comprises incident side, total reflection side and outgoing side; Described incident side is used for described first collimated incident face to be connected with described total reflection side, and described outgoing side is used for that described total reflection side and described second is collimated transmission plane and is connected; Described full reflection side face comprises two or more different curves, and described outgoing side is identical with the curved surface distributed architecture of described total reflection side.
2. the even optical lens of multifocal according to claim 1, is characterized in that, described first collimated incident face comprises the first surface being positioned at center and the second curved surface be connected with described first surface; Described second collimation transmission plane comprises the 3rd curved surface being positioned at center and the 4th curved surface be connected with described 3rd curved surface accordingly; Described first surface and the second curved surface are different curve, described 3rd curved surface and the 4th curved surface are different curve.
3. the even optical lens of multifocal according to claim 1, is characterized in that, the caliber size that the bore and described second in described first collimated incident face collimates transmission plane is equal.
4. the even optical lens of multifocal according to claim 1, is characterized in that, described incident side is curved surface.
5. the even optical lens of multifocal according to claim 1, is characterized in that, described full reflection side face comprises interconnective 5th curved surface and the 6th curved surface, and described exiting side face comprises interconnective 7th curved surface and the 8th curved surface accordingly; Described 5th curved surface and the 6th curved surface are different curve, described 7th curved surface and the 8th curved surface are different curve.
6. the even optical lens of multifocal according to claim 1, is characterized in that, the surface of described transmission units is provided with scale structure or compound eye structural.
7. the even optical lens of multifocal according to claim 1, is characterized in that, the surface of described total reflection unit is provided with scale structure or compound eye structural.
8. an optical system, comprises LED light source, it is characterized in that, also comprises the even optical lens of multifocal described in any one of claim 1 ~ 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410638075.2A CN104834031B (en) | 2014-11-12 | 2014-11-12 | Multi-focus dodging lens and optical system |
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| CN201410638075.2A CN104834031B (en) | 2014-11-12 | 2014-11-12 | Multi-focus dodging lens and optical system |
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| CN104834031A true CN104834031A (en) | 2015-08-12 |
| CN104834031B CN104834031B (en) | 2017-05-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108692294A (en) * | 2018-05-28 | 2018-10-23 | 深圳市朗恒电子有限公司 | A kind of special-shaped lens |
| CN110553213A (en) * | 2018-06-01 | 2019-12-10 | 深圳市绎立锐光科技开发有限公司 | Light source module |
| CN111830722A (en) * | 2020-07-30 | 2020-10-27 | 青岛镭创光电技术有限公司 | Laser emitter with multi-pass light spots |
| CN114839787A (en) * | 2022-05-26 | 2022-08-02 | 西安炬光科技股份有限公司 | Optical element, optical module and beam shaping method |
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| CN104834031B (en) | 2017-05-17 |
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