CN203501045U - Lens and light device comprising the same - Google Patents
Lens and light device comprising the same Download PDFInfo
- Publication number
- CN203501045U CN203501045U CN201320606342.9U CN201320606342U CN203501045U CN 203501045 U CN203501045 U CN 203501045U CN 201320606342 U CN201320606342 U CN 201320606342U CN 203501045 U CN203501045 U CN 203501045U
- Authority
- CN
- China
- Prior art keywords
- lens
- light
- face
- light source
- led
- 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.)
- Withdrawn - After Issue
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0071—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source adapted to illuminate a complete hemisphere or a plane extending 360 degrees around the source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model provides a lens and a lighting device comprising the same. The lens is provided with a mounting face. The lens extends in a direction parallel to the mounting face. The lens comprises a light-in face which forms the inner contour of the lens and a light-out face which forms the outer contour of the lends. The light-in face and the light-out face are connected through the mounting face. The section, perpendicular to the extending direction, of the lens is symmetrical left and right. The light-in face is an inner concave curve face, a concave part is formed, and the concave part can contain a plurality of light sources. The lens is characterized in that the outer contour line of the section is an arc line, and the inner contour line is a free curve line. Compared with the prior art, through the design of the lens, light distribution of LED emitting-out light is changed into the mode that light intensity is almost the same in the directions by 180 degrees from a Lambert mode. Compared with an existing LED lamp tube, a lamp tube with the lens is larger in light-out angle and wider in application.
Description
Technical field
The utility model relates to a kind of lens and a kind of lighting device that comprises these lens.
Background technology
Because LED has that volume is little, the life-span is long, light efficiency is high, it is low, radiationless to generate heat, low energy consumption and environmental protection be without advantages such as mercury, so belong to energy-saving and environment friendly illuminating product, national governments all pollute with the saving energy, reduction in positive encourage growth LED lighting engineering.Along with the develop rapidly of LED illumination, existing conventional light source product is just progressively substituted by LED light source product.LED fluorescent tube in the market, most white light LEDs that adopt, form a line, and then the cylindrical diffusion shell of a cloudy surface of outer surface cover, substitutes traditional fluorescent tube with this.
But fluorescent tube and LED fluorescent tube luminous intensity distribution differ greatly, and this has limited the development of LED fluorescent tube to a great extent.The luminous intensity distribution difference of fluorescent tube and LED fluorescent tube as can be seen from Figure 1, fluorescent tube is that 360 degree are all luminous, and LED lamp luminescence angle is less, and in figure, A is fluorescent tube, B, C are expressed as LED fluorescent tube.There were afterwards some products, by increasing the diffusion on lampshade surface, increased beam angle, but the problem of having brought again like this light efficiency to decline.
Utility model content
The purpose of this utility model is in order to address the above problem, and a kind of LED fluorescent tube pantoscopic lens of using and the lighting device that comprises these lens are provided.
The technical solution of the utility model is, a kind of lens are provided, there is installed surface, described lens extend along a direction that is parallel to described installed surface, described lens comprise the incidence surface that forms profile in lens and the exiting surface that forms lens outline, between described incidence surface and exiting surface, by installed surface, be connected, described lens are symmetrical perpendicular to the cross section of bearing of trend, described incidence surface is the curved surface of indent, form a sunk part, described sunk part can hold a plurality of light sources, it is characterized in that, the outer contour in described cross section is one section of circular arc line, inner outline is free curve.
Preferably, the free curve of described inner outline makes the incidence angle i of light of described incidence surface and angle of emergence γ meet following equation γ=C3i 3+C2i2+C1i+C0, C3=-6.4674744E-05 wherein, C2=1.8103132E-03, C1=1.2487639, and C0=0.16066865.
Preferably, the center of circle of described outer contour circular arc is below described light source.
Preferably, described exiting surface surface is through cloudy surface blasting treatment.
The utility model also provides a kind of lighting device, it is characterized in that, comprise said lens, two above along light source arranged in a straight line, carry the circuit board of described light source, described lens are covered on described light source.
Preferably, at described lens, also comprise a face shield outward.
Preferably, described face shield comprises phosphor powder layer or comprises fluorescent material.
Preferably, at described light source, be blue-ray LED, described fluorescent material is yellow fluorescent powder.
The utility model, owing to having adopted technique scheme, makes it compared with prior art, and the Lens Design that the utility model passes through makes LED emergent light and from lambert's type luminous intensity distribution, becomes in 180 degree directions the luminous intensity distribution that all directions light intensity is almost equal.Adopted the fluorescent tube of these lens to compare with existing LED fluorescent tube, beam angle is larger, applies wider.
Accompanying drawing explanation
Fig. 1 is the luminous intensity distribution difference diagram of fluorescent tube and LED fluorescent tube;
Fig. 2 is the structural representation of the utility model lens;
Fig. 3 is the profile of the utility model lens;
Fig. 4 is the ray tracing figure of the utility model lens;
Fig. 5 is the utility model lens incidence surface incidence angle and angle of emergence function relation figure;
Fig. 6 is the optical simulation luminous intensity distribution figure of the utility model lens.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to lens that the utility model proposes and comprise that the lighting device of these lens is described in further detail.α1?β1
Specific embodiment please refer to Fig. 2, Fig. 3, and the present embodiment is one and comprises lens 1 and LED lamp bar 2 for the lighting module of fluorescent tube, and lens 1 and LED lamp bar 2 are arranged in same plane, and LED lamp bar 2 is covered by lens 1.In some other embodiment, because lens carrier or other some mounting means, lens 1 and LED lamp bar 2 may not be arranged on same plane, and here for convenience of description, our alleged mounting plane refers to lens 1 and supports the contact plane of part.The present embodiment adopts LED as light source, and LED described here can refer to the LED of encapsulation, LED, the surface mount LED, the chip on board LED that do not encapsulate, comprise the LED of a certain type optical element.The light source of the LED lamp bar of the present embodiment adopts the LED of SMT encapsulation, as 2323,5630,3014 etc.
Lens 1 are drawing lens, its shape of cross section, as shown in Figure 3.Owing to will substituting traditional fluorescent tube, so need to realize wide-angle light distribution effect.Lens 1 are tension type lens, are along a direction horizontal-extending that is parallel to mounting plane, and its each cross section perpendicular to bearing of trend is identical.Sectional view is referring to Fig. 3, lens 1 comprise the incidence surface 101 that forms profile in lens and the exiting surface 102 that forms lens outline, described incidence surface 101 is connected by installed surface 103 with 102 of exiting surfaces, wherein the cross section of exiting surface 102 is that one section of circular arc line forms outer contour, and the cross section of incidence surface 101 is that free curve forms inner outline.Incidence surface 101 limits and can hold a plurality ofly along light source arranged in a straight line, i.e. the sinking space of LED lamp bar 2, take perpendicular to installed surface and be the plane of reference through the plane of the optical axis of LED lamp bar 2, and lens 1 are symmetric shape in described plane of reference both sides.
In order to realize the light distribution effect of wide-angle, the present embodiment adopts following design, and Fig. 4 is the ray tracing figure of the present embodiment lens.As shown in Figure 3, Figure 4, after incidence surface 101, there is unirefringence in the light that LED penetrates, the angle of incident ray and LED optical axis is i, the angle of outgoing incident ray and LED optical axis is γ, here the optical axis of said LED be one perpendicular to the virtual straight line of installed surface, incidence surface is expressed as one section of free curve on sectional view, this free curve meets following equation γ=C3i 3+C2i2+C1i+C0, C3=-6.4674744E-05 wherein, C2=1.8103132E-03, C1=1.2487639, and C0=0.16066865.Fig. 5 is the function curve of incidence angle i and angle of emergence γ in this equation.And the center of circle of the outer contour circular arc of exiting surface 102 on cross section is below described LED lamp bar 2, in the present embodiment, mounting plane and LED lamp bar 2 are at same plane, namely the center of circle is under mounting plane, the center of circle of circular arc, below LED light-emitting area, is more conducive to light towards wide-angle deviation.Fig. 6 is the optical simulation luminous intensity distribution figure of the present embodiment lens, is two distribution curve fluxs in plane, and in figure, the similar oval-shaped region of mid portion is the plane along lens draw direction, is the luminous intensity distribution of similar lambert's type; The luminous intensity distribution figure of butterfly shape is as shown in the figure the plane of vertical lens draw direction, be wide-angle luminous intensity distribution, and in 180 degree directions, in all directions, light intensity is almost equal.
In addition we can also scioptics shape the optimization of design, and do some surface treatments (as cloudy surface sandblast etc.) at the exiting surface 102 of lens, carry out the shooting angle of increasing light.
Lens in the present embodiment are used for being assembled into LED fluorescent tube, fluorescent tube comprises a plurality of LED light sources, and these LED light sources are arranged in a linear on a circuit board, and the lens in the present embodiment are covered on circuit board, as shown in Figure 2, LED light source 2 is positioned at the middle strip groove below of lens.As a fluorescent tube, at lens, also comprise a face shield outward, face shield is shaped as cylindrical, from shape and optical characteristics, all more approaches traditional fluorescent tube like this.Face shield is light-transmitting materials, can be by glass, such as the transparent resins such as Merlon and crystalline ceramics, form.As required, can be by diffusant or phosphor-coating the inner surface to face shield, or diffusant or phosphor can be included in face shield.In one embodiment, adopt remote fluorescence powder technology to solve the arrange sparse granular sensation forming and macula lutea problem due to LED.LED lamp bar light source adopts blue chip, puts the lens that a basic utility model is described on light source, and the coated one deck glass in outside or plastic face mask, apply yellow fluorescent powder on the inwall of face shield.
To the description of the utility model preferred embodiment, be above in order to illustrate and to describe, not want the utility model limit or be confined to disclosed concrete form, obviously, may make many modifications and variations, these modifications and variations may be obvious to those skilled in the art, within should being included in the scope of the present utility model being defined by appended claims.
Claims (8)
1. lens, there is installed surface, described lens extend along a direction that is parallel to described installed surface, described lens comprise the incidence surface that forms profile in lens and the exiting surface that forms lens outline, between described incidence surface and exiting surface, by installed surface, be connected, described lens are symmetrical perpendicular to the cross section of bearing of trend, described incidence surface is the curved surface of indent, form a sunk part, described sunk part can hold a plurality of light sources, it is characterized in that, the outer contour in described cross section is one section of circular arc line, and inner outline is free curve.
2. a kind of lens according to claim 1, the free curve that it is characterized in that described inner outline makes incidence angle i and the angle of emergence γ of the light of described incidence surface meet following equation γ=C3i 3+C2i2+C1i+C0, C3=-6.4674744E-05 wherein, C2=1.8103132E-03, C1=1.2487639, and C0=0.16066865.
3. a kind of lens according to claim 2, is characterized in that the center of circle of described outer contour circular arc is below described light source.
4. a kind of lens according to claim 1, is characterized in that described exiting surface surface is through cloudy surface blasting treatment.
5. a lighting device, is characterized in that, comprise according to the lens described in any one in claim 1-4, two above along light source arranged in a straight line, carry the circuit board of described light source, described lens are covered on described light source.
6. a kind of lighting device according to claim 5, is characterized in that also comprising a face shield outward at described lens.
7. a kind of lighting device according to claim 6, is characterized in that described face shield comprises phosphor powder layer or comprises fluorescent material.
8. a kind of lighting device according to claim 7, is characterized in that at described light source be blue-ray LED, and described fluorescent material is yellow fluorescent powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606342.9U CN203501045U (en) | 2013-09-29 | 2013-09-29 | Lens and light device comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606342.9U CN203501045U (en) | 2013-09-29 | 2013-09-29 | Lens and light device comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203501045U true CN203501045U (en) | 2014-03-26 |
Family
ID=50332021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320606342.9U Withdrawn - After Issue CN203501045U (en) | 2013-09-29 | 2013-09-29 | Lens and light device comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203501045U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329599A (en) * | 2014-10-17 | 2015-02-04 | 东莞勤上光电股份有限公司 | Bar-shaped LED (light-emitting diode) lamp and bar-shaped lens |
| WO2015043468A1 (en) * | 2013-09-29 | 2015-04-02 | 欧普照明股份有限公司 | Lens and lighting device comprising same |
| CN105180093A (en) * | 2015-10-23 | 2015-12-23 | 欧普照明股份有限公司 | Lens, light source module and lighting devices |
| WO2017067512A1 (en) * | 2015-10-23 | 2017-04-27 | 欧普照明股份有限公司 | Lens, light source module, and illuminating device |
| CN107461714A (en) * | 2017-08-01 | 2017-12-12 | 深圳市华星光电技术有限公司 | Light source assembly and its strip lens |
| WO2022143408A1 (en) * | 2020-12-28 | 2022-07-07 | 苏州欧普照明有限公司 | Double-curved-surface lens and led lamp |
-
2013
- 2013-09-29 CN CN201320606342.9U patent/CN203501045U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043468A1 (en) * | 2013-09-29 | 2015-04-02 | 欧普照明股份有限公司 | Lens and lighting device comprising same |
| CN104515064A (en) * | 2013-09-29 | 2015-04-15 | 苏州欧普照明有限公司 | Lens and lighting device comprising same |
| CN104515064B (en) * | 2013-09-29 | 2017-05-24 | 苏州欧普照明有限公司 | Lens and lighting device comprising same |
| CN104329599A (en) * | 2014-10-17 | 2015-02-04 | 东莞勤上光电股份有限公司 | Bar-shaped LED (light-emitting diode) lamp and bar-shaped lens |
| CN105180093A (en) * | 2015-10-23 | 2015-12-23 | 欧普照明股份有限公司 | Lens, light source module and lighting devices |
| WO2017067512A1 (en) * | 2015-10-23 | 2017-04-27 | 欧普照明股份有限公司 | Lens, light source module, and illuminating device |
| CN107461714A (en) * | 2017-08-01 | 2017-12-12 | 深圳市华星光电技术有限公司 | Light source assembly and its strip lens |
| WO2022143408A1 (en) * | 2020-12-28 | 2022-07-07 | 苏州欧普照明有限公司 | Double-curved-surface lens and led lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20170524 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20170524 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |