CN103791442A - Lenses of large-angle LED (Light Emitting Diode) bulb lamp and design method thereof - Google Patents
Lenses of large-angle LED (Light Emitting Diode) bulb lamp and design method thereof Download PDFInfo
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- CN103791442A CN103791442A CN201210427911.3A CN201210427911A CN103791442A CN 103791442 A CN103791442 A CN 103791442A CN 201210427911 A CN201210427911 A CN 201210427911A CN 103791442 A CN103791442 A CN 103791442A
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Abstract
The invention discloses lenses of a large-angle LED (Light Emitting Diode) bulb lamp and a design method thereof. The lenses comprise a planoconvex lens and a plurality of collimation total-reflection lenses; circumferences of the collimation total-reflection lenses are uniformly distributed on the periphery of the planoconvex lens; every collimation total-reflection lens extends to form an incident portion in the light emergent direction, wherein the end portion of the incident portion is perpendicularly connected with an emergent portion, a total-reflection surface is formed between the incident portion and the emergent portion, and the lateral side of one end of the emergent portion is a free-form surface; the light emitted from LED light sources which are arranged in the collimation total-reflection lenses is parallel to axes of the incident portions after refraction and reflection to irradiate towards the total-reflection surfaces; the reflection light which passes through the total-reflection surfaces horizontally irradiates towards the free-form surfaces and the emergent light is emitted through the refraction of the free-form surfaces. According to the lenses of the large-angle LED bulb lamp and the design method thereof, the problem that the light emitting angle of the existing plane arrangement LED bulb lamp is not more than 150 degrees is solved, the actual requirements of different light emitting angles of LED bulb lamps can be met through adjustment of the light emitting surfaces located at the tail ends of the emergent portions, the light distribution is uniform, and the efficiency is high.
Description
[technical field]
The present invention relates to a kind of method for designing of optical element, particularly a kind of lens of large-angle LED bulb lamp and method for designing thereof.
[background technology]
Conventional incandescent power consumption is high, the life-span is short, and under the overall situation of global resources anxiety, the power consumption of LED bulb lamp is low, the life-span long and not containing environmentally harmful Pb, the harmful elements such as Hg, are the Novel energy-saving lamps that substitutes conventional incandescent bulb; The LED lighting angle of horizontal layout is generally no more than 120 degree, even if the lighting angle of the LED bulb lamp of the upper diffraction lamp shade of cover is generally also no more than 150 degree, range of exposures is narrow, and dark space, light fixture top is larger, has certain defect; The LED lighting angle of non-planar arrangement generally can exceed 300 degree, but is limited to small-power, and has brought certain difficulty to assembling, volume production.Under traditional secondary optical design method, the lighting angle of LED bulb lamp can reach 300 degree, but light efficiency is low, luminous intensity distribution is poor.
[summary of the invention]
The object of the invention is to overcome deficiency of the prior art, lens and the method for designing thereof of the large-angle LED bulb lamp that a kind of lighting angle is large, efficiency is high, luminous intensity distribution is suitable with incandescent lamp is provided.
A kind of lens of large-angle LED bulb lamp, it is characterized in that: comprise a planoconvex spotlight and several collimation total reflection lens, on the periphery that is arranged on planoconvex spotlight that described collimation total reflection lens even circumferential distributes, its exit direction in light is also extended with incident section, the end of incident section is with one outgoing portion is vertical is connected, between incident section and outgoing portion, be provided with a fully reflecting surface, the side of the other end of described outgoing portion is free form surface; The light that LED light source in described collimation total reflection lens sends is parallel to fully reflecting surface described in the directive of axle center, incident section after catadioptric, on reflection ray horizontal sheaf free form surface after fully reflecting surface, and make outgoing divergence of beam by the refraction of free form surface.
Preferably, the bottom centre of described collimation total reflection lens is provided with one for the inward recess of described LED light source is installed.
Preferably, described collimation total reflection lens adopts acrylic material to make.
Described method for designing comprises the steps:
(1) take single LEDs light source as benchmark, design a collimation total reflection lens, the nearest parallel lines of light that LED light source is sent, described collimation total reflection lens is also extended with incident section in the exit direction of light, and the end of incident section is with one outgoing portion is vertical is connected;
(2) utilize total reflection law, in the time that being greater than critical angle, incidence angle there is total reflection, in PROE or SOLIDWORKS software, design a fully reflecting surface, described fully reflecting surface designs between incident section and outgoing portion, allow on the free form surface of incident ray in the incident section reflection ray energy horizontal sheaf outgoing portion other end after described fully reflecting surface, allow divergence of beam by the refraction of free form surface, determine that by actual design requirement emergent ray is in the one-sided range of exposures of luminous intensity distribution, according to range of exposures, described emergent ray and irradiation light are carried out corresponding one by one, and then calculate free form surface,
(3) according to designing requirement, in PROE or SOLIDWORKS by described collimation total reflection lens and be connected incident section with it and circumference permutation is done around the axial line of LED bulb lamp by outgoing portion, reduced model carries out simulation analysis to optics software afterwards, the result of checking realizes luminous intensity distribution as met in the range of exposures of designing requirement and is uniformly distributed, it is output model, as be designed with deviation, repeat above-mentioned (2)-(3) step until meet designing requirement;
(4) in circumference permutation, design a planoconvex spotlight, supplement the light of one-sided 0 °-80 ° of luminous intensity distribution, and make itself and all collimation total reflection lens connect into an entirety, reduced model is SAT or STP form;
(5) block mold obtaining in step (4) is imported and in optics software, carries out optical analog analysis, the result of checking is as even in met overall luminous intensity distribution in the lighting angle in designing requirement, be output model, as be designed with deviation, repeating step (4) is until meet designing requirement.
Compared with prior art, the invention has the beneficial effects as follows: the lighting angle that solves the LED bulb lamp of existing horizontal layout is no more than the problem of 150 °, by adjusting the exiting surface of outgoing portion end, can meet the actual demand of the LED bulb lamp of different lighting angles, luminous intensity distribution is even, and efficiency is high.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of collimation total reflection lens of the present invention;
Fig. 2 is bright dipping schematic diagram of the present invention;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the LED bulb lamp distribution curve flux figure of the embodiment of the present invention 5.
[specific embodiment]
Below in conjunction with the drawings and the specific embodiments, the invention will be further described:
As shown in Figure 1 to Figure 3, the lens of large-angle LED bulb lamp of the present invention, comprise a planoconvex spotlight 6 and several collimation total reflection lens 1, on the periphery that is arranged on planoconvex spotlight 6 that described several collimation total reflection lens 1 even circumferentials distribute, the bottom centre of described collimation total reflection lens 1 is provided with one for the inward recess 11 of LED light source is installed, top is upwards extended with an incident section 2, the vertical connection of one end of the top of incident section 2 and an outgoing portion 4, between incident section 2 and outgoing portion 3, be provided with a fully reflecting surface 3, fully reflecting surface 3 is horizontal 45° angle setting, the exiting surface that the other end side of described outgoing portion 4 is light, described exiting surface is free form surface 5, the light of described LED light source is injected in incident section 2 straight up in the interior axle center that collimates total reflection lens 1 that is parallel to after catadioptric of collimation total reflection lens 1, described in reflection ray 8 horizontal sheafs of its incident ray 7 after fully reflecting surface 3 reflection on free form surface 5, and by the refraction of free form surface 5, emergent ray 9 is dispersed, form the LED bulb lamp that exceedes 180 ° of lighting angles.
The incident section of described collimation total reflection lens and connection thereof and outgoing portion adopt acrylic material to make, the cirtical angle of total reflection of acrylic material is 42.0337 °, and incident ray 7 is 45 ° with the angle of fully reflecting surface, be greater than critical angle, so generation total reflection, makes incident ray 7 horizontal reflections on free form surface 5.
Described planoconvex spotlight, for supplementing the light of one-sided 0 ° of-80 ° of scope of distribution curve flux, makes the luminous intensity distribution of whole LED bulb lamp even, and it is fixedly connected with all collimation total reflection lens, as a whole, makes its structure firm.
The method for designing of the lens of described large-angle LED bulb lamp comprises the steps:
(1) take single LEDs light source as benchmark, design a collimation total reflection lens 1, the nearest parallel lines of light 10 that LED light source is sent, described collimation total reflection lens 1 is also extended with incident section 2 in the exit direction of light 10, and the end of incident section 2 is with one outgoing portion 4 is vertical is connected;
(2) utilize total reflection law, in the time that being greater than critical angle, incidence angle there is total reflection, in PROE or SOLIDWORKS software, design a fully reflecting surface 3, described fully reflecting surface 3 designs between incident section 2 and outgoing portion 4, allow incident ray 7 in incident section 2 reflection ray 8 after described fully reflecting surface 3 can the free form surface 5 of horizontal sheaf outgoing portion 4 other ends on, allow divergence of beam by the refraction of free form surface 5, determine that by actual design requirement emergent ray 9 is in the one-sided range of exposures of luminous intensity distribution, according to range of exposures, described emergent ray 9 and irradiation light (being reflection ray 8) are carried out corresponding one by one, and then calculate free form surface 5,
(3) according to designing requirement, in PROE or SOLIDWORKS by described collimation total reflection lens 1 and be connected incident section 2 with it and circumference permutation is done around the axial line of LED bulb lamp by outgoing portion 3, reduced model carries out simulation analysis to optics software afterwards, the result of checking realizes luminous intensity distribution as met in the range of exposures of designing requirement and is uniformly distributed, it is output model, as be designed with deviation, repeat above-mentioned (2)-(3) step until meet designing requirement;
(4) in circumference permutation, design a planoconvex spotlight 6, supplement the light of one-sided 0 °-80 ° of luminous intensity distribution, and make itself and all collimation total reflection lens 1 connect into an entirety, reduced model is SAT or STP form;
(5) block mold obtaining in step (4) is imported and in optics software, carries out optical analog analysis, the result of checking is as even in met overall luminous intensity distribution in the lighting angle in designing requirement, be output model, as be designed with deviation, repeating step (4) is until meet designing requirement.
Embodiment mono-
The lighting angle of supposing large-angle LED bulb lamp is 220 degree, light source uses CREE-XPE, programme and calculate collimation total reflection lens curve by matlab, the nearest parallel lines of light that LED light source is sent, importing SOLIDWORKS or PROE carries out curve fitting, reduced model carries out simulation analysis at TRACEPRO optics software, and checking meets designing requirement; Calculate 42.0337 ° of the critical angles of acrylic material, at a plane of reflection 3 of SOLIDWORKS the inside design, make reflection ray parallel with horizontal plane; According to catadioptric law, and according to range of exposures, institute's emergent ray 9 and irradiation light (being reflection ray 8) are carried out to one-to-one relationship and set up equation, after solving, design exiting surface (being free form surface 5) in SOLIDWORKS the inside, and do circumference array, reduced model is simulated in optics software, and it is even in 60 ° of-110 ° of directions whether the result meets distribution curve flux, as do not meet, readjust exiting surface curve, until meet designing requirement; In circumference array, design a planoconvex spotlight 6, make it even at 0-60 ° of direction luminous intensity distribution; In SOLIDWORKS, planoconvex spotlight and circumference array collimation total reflection lens are linked together, reduced model carries out simulation analysis at TRACEPRO optics software, the result of checking is output model as met designing requirement, as be designed with deviation, repeat above-mentioned steps until meet designing requirement.
Embodiment bis-
The lighting angle of supposing large-angle LED bulb lamp is 240 degree, light source uses CREE-XPE, programme and calculate collimation total reflection lens curve by matlab, the nearest parallel lines of light that LED light source is sent, importing SOLIDWORKS or PROE carries out curve fitting, reduced model carries out simulation analysis at TRACEPRO optics software, and checking meets designing requirement; Calculate the critical angle of acrylic material, at a plane of reflection 3 of SOLIDWORKS the inside design, make reflection ray parallel with horizontal plane; According to catadioptric law, and according to range of exposures, institute's emergent ray 9 and irradiation light (being reflection ray 8) are carried out to one-to-one relationship and set up equation, after solving, design exiting surface (being free form surface 5) in SOLIDWORKS the inside, and do circumference array, reduced model is simulated in optics software, and it is even in 60 ° of-120 ° of directions whether the result meets distribution curve flux, as do not meet, readjust exiting surface curve, until meet designing requirement; In circumference array, design a planoconvex spotlight, make it even at 0-60 ° of direction luminous intensity distribution; In SOLIDWORKS, planoconvex spotlight and circumference array collimation total reflection lens are linked together, reduced model carries out simulation analysis at TRACEPRO optics software, the result of checking is output model as met designing requirement, as be designed with deviation, repeat above-mentioned steps until meet designing requirement.
Embodiment tri-
The lighting angle of supposing large-angle LED bulb lamp is 270 degree, light source uses CREE-XPE, programme and calculate collimation total reflection lens curve by matlab, the nearest parallel lines of light that LED light source is sent, importing SOLIDWORKS or PROE carries out curve fitting, reduced model carries out simulation analysis at TRACEPRO optics software, and checking meets designing requirement; Calculate the critical angle of acrylic material, at a plane of reflection 3 of SOLIDWORKS the inside design, make reflection ray parallel with horizontal plane; According to catadioptric law, and according to range of exposures, institute's emergent ray 9 and irradiation light (being reflection ray 8) are carried out to one-to-one relationship and set up equation, after solving, design exiting surface (being free form surface 5) in SOLIDWORKS the inside, and do circumference array, reduced model is simulated in optics software, and it is even in 60 ° of-135 ° of directions whether the result meets distribution curve flux, as do not meet, readjust exiting surface curve, until meet designing requirement; In circumference array, design a planoconvex spotlight, make it even at 0-60 ° of direction luminous intensity distribution; In SOLIDWORKS, planoconvex spotlight and circumference array collimation total reflection lens are linked together, reduced model carries out simulation analysis at TRACEPRO optics software, the result of checking is output model as met designing requirement, as be designed with deviation, repeat above-mentioned steps until meet designing requirement.
Embodiment tetra-
The lighting angle of supposing large-angle LED bulb lamp is 300 degree, light source uses CREE-XPE, programme and calculate collimation total reflection lens curve by matlab, the nearest parallel lines of light that LED light source is sent, importing SOLIDWORKS or PROE carries out curve fitting, reduced model carries out simulation analysis at TRACEPRO optics software, and checking meets designing requirement; Calculate the critical angle of acrylic material, at a plane of reflection 3 of SOLIDWORKS the inside design, make reflection ray parallel with horizontal plane; According to catadioptric law, and according to range of exposures, institute's emergent ray 9 and irradiation light (being reflection ray 8) are carried out to one-to-one relationship and set up equation, after solving, design exiting surface (being free form surface 5) in SOLIDWORKS the inside, and do circumference array, reduced model is simulated in optics software, and it is even in 60 ° of-150 ° of directions whether the result meets distribution curve flux, as do not meet, readjust exiting surface curve, until meet designing requirement; In circumference array, design a planoconvex spotlight, make it even at 0-60 ° of direction luminous intensity distribution; In SOLIDWORKS, planoconvex spotlight and circumference array collimation total reflection lens are linked together, reduced model carries out simulation analysis at TRACEPRO optics software, the result of checking is output model as met designing requirement, as be designed with deviation, repeat above-mentioned steps until meet designing requirement.
Embodiment five
The lighting angle of supposing large-angle LED bulb lamp is 310 degree, light source uses CREE-XPE, as shown in Figure 4, programme and calculate collimation total reflection lens curve by matlab, the nearest parallel lines of light that LED light source is sent, import SOLIDWORKS or PROE and carry out curve fitting, reduced model carries out simulation analysis at TRACEPRO optics software, and checking meets designing requirement; Calculate the critical angle of acrylic material, at a plane of reflection 3 of SOLIDWORKS the inside design, make reflection ray parallel with horizontal plane; According to catadioptric law, and according to range of exposures, institute's emergent ray 9 and irradiation light (being reflection ray 8) are carried out to one-to-one relationship and set up equation, after solving, design exiting surface (being free form surface 5) in SOLIDWORKS the inside, and do circumference array, reduced model is simulated in optics software, and it is even in 65 ° of-155 ° of directions whether the result meets distribution curve flux, as do not meet, readjust exiting surface curve, until meet designing requirement; In circumference array, design a planoconvex spotlight, make it even at 0-65 ° of direction luminous intensity distribution; In SOLIDWORKS, planoconvex spotlight and circumference array collimation total reflection lens are linked together, reduced model carries out simulation analysis at TRACEPRO optics software, the result of checking is output model as met designing requirement, as be designed with deviation, repeat above-mentioned steps until meet designing requirement.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the present invention is not limited to the specific embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition,, although used some specific terms in this description, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (4)
1. a lens design method for large-angle LED bulb lamp, is characterized in that, described method for designing comprises the steps:
(1) take single LEDs light source as benchmark, design a collimation total reflection lens, the nearest parallel lines of light that LED light source is sent, described collimation total reflection lens is also extended with incident section in the exit direction of light, and the end of incident section is with one outgoing portion is vertical is connected;
(2) utilize total reflection law, in the time that being greater than critical angle, incidence angle there is total reflection, in PROE or SOLIDWORKS software, design a fully reflecting surface, described fully reflecting surface designs between incident section and outgoing portion, allow on the free form surface of incident ray in the incident section reflection ray energy horizontal sheaf outgoing portion other end after described fully reflecting surface, allow divergence of beam by the refraction of free form surface, determine that by actual design requirement emergent ray is in the one-sided range of exposures of luminous intensity distribution, according to range of exposures, described emergent ray and irradiation light are carried out corresponding one by one, and then calculate free form surface,
(3) according to designing requirement, in PROE or SOLIDWORKS by described collimation total reflection lens and be connected incident section with it and circumference permutation is done around the axial line of LED bulb lamp by outgoing portion, reduced model carries out simulation analysis to optics software afterwards, the result of checking realizes luminous intensity distribution as met in the range of exposures of designing requirement and is uniformly distributed, it is output model, as be designed with deviation, repeat above-mentioned (2)-(3) step until meet designing requirement;
(4) in circumference permutation, design a planoconvex spotlight, supplement the light of one-sided 0 °-80 ° of luminous intensity distribution, and make itself and all collimation total reflection lens connect into an entirety, reduced model is SAT or STP form;
(5) block mold obtaining in step (4) is imported and in optics software, carries out optical analog analysis, the result of checking is as even in met overall luminous intensity distribution in the lighting angle in designing requirement, be output model, as be designed with deviation, repeating step (4) is until meet designing requirement.
2. the lens of a large-angle LED bulb lamp, it is characterized in that: comprise a planoconvex spotlight and several collimation total reflection lens, on the periphery that is arranged on planoconvex spotlight that described collimation total reflection lens even circumferential distributes, its exit direction in light is also extended with incident section, the end of incident section is with one outgoing portion is vertical is connected, between incident section and outgoing portion, be provided with a fully reflecting surface, the side of the other end of described outgoing portion is free form surface; The light that LED light source in described collimation total reflection lens sends is parallel to fully reflecting surface described in the directive of axle center, incident section after catadioptric, on reflection ray horizontal sheaf free form surface after fully reflecting surface, and make outgoing divergence of beam by the refraction of free form surface.
3. the lens of large-angle LED bulb lamp according to claim 2, is characterized in that: the bottom centre of described collimation total reflection lens is provided with one for the inward recess of described LED light source is installed.
4. the lens of large-angle LED bulb lamp according to claim 2, is characterized in that: described collimation total reflection lens adopts acrylic material to make.
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| CN201210427911.3A CN103791442A (en) | 2012-10-31 | 2012-10-31 | Lenses of large-angle LED (Light Emitting Diode) bulb lamp and design method thereof |
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| CN104155745A (en) * | 2014-08-28 | 2014-11-19 | 烟台纳威给申莱茨电子科技有限公司 | Light-emitting lens for beacon light |
| CN105258003A (en) * | 2015-10-29 | 2016-01-20 | 深圳市利科达光电有限公司 | Optical module capable of achieving accurate multi-unit light spot coincidence and production method |
| CN106352255A (en) * | 2016-11-02 | 2017-01-25 | 广东奥普特科技股份有限公司 | Point condensing device |
| CN107062125A (en) * | 2017-05-09 | 2017-08-18 | 上海小糸车灯有限公司 | A kind of automobile tail light and its application based on augmented reality principle |
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| CN108884978A (en) * | 2016-04-06 | 2018-11-23 | 黑拉有限责任两合公司 | For the light source of lighting device and the lighting device with such light source |
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| CN108826229A (en) * | 2018-07-04 | 2018-11-16 | 赛尔富电子有限公司 | A kind of focusing lamp lens group and corresponding lighting system |
| CN111830621A (en) * | 2019-04-16 | 2020-10-27 | 深圳明智超精密科技有限公司 | RGB light guide lens |
| CN114353013A (en) * | 2020-10-14 | 2022-04-15 | 台州市远大工业设计有限公司 | LED light distribution device and LED combined light source for replacing halogen lamp filament |
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