CN102748707A - Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens - Google Patents
Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens Download PDFInfo
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- CN102748707A CN102748707A CN2011101010384A CN201110101038A CN102748707A CN 102748707 A CN102748707 A CN 102748707A CN 2011101010384 A CN2011101010384 A CN 2011101010384A CN 201110101038 A CN201110101038 A CN 201110101038A CN 102748707 A CN102748707 A CN 102748707A
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- total reflection
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Abstract
The invention relates to a floodlight total-reflection lens. The total-reflection lens is a rotary body with a rotary bus as a folding line; the rotary bus of the rotary body is the folding line which is formed by connecting four line sections in sequence; a light source mounting hole is formed on the light incoming surface of the total-reflection lens; a conical concave surface is arranged on the center of the light emitting surface, wherein the peak of the conical concave surface is on the symmetrical shaft of the total-reflection lens; the light source mounting hole comprises a cylindrical blind hole and a conical concave hole formed by extending the cylindrical blind hole inwards; and the symmetrical shaft of the cylindrical blind hole and the symmetrical shaft of the total-reflection lens are overlapped, and the peak of the conical concave hole is on the symmetrical shaft of the total-reflection lens. According to the floodlight total-reflection lens, the rotary bus of the floodlight total-reflection lens adopts the folding line, so that the total-reflection lens meets the requirements of a lighting angle and realizes the floodlight lighting, and simultaneously, the volume is minimized; and the light angle of a light source close to an optical axis can be enlarged through the conical concave surface of the light emitting surface and the bottom conical concave hole, and the lighting uniformity of the lamp in the lighting angle is improved greatly.
Description
Technical field
The present invention relates to the lens technologies field, more particularly, relate to a kind of floodlight total reflection lens and use the LED light fixture of these lens.
Background technology
The LED lamp is generally adopted the reflector luminous intensity distribution, but this mode is not very desirable to the processing of light type, especially the light intensity along the LED optical axis direction is bigger, and always to occur the light intensity of dipped beam shaft portion again higher but carry out luminous intensity distribution through reflector.In addition, also have and adopt convex lens that LED is carried out optically focused, but this mode is lower to the utilization rate of LED luminous flux, shows that the bigger light in the luminous angle of LED can't be utilized, and finally causes the light efficiency utilization rate of light fixture low.Also has one type of floodlight lens at present; Be on the basis of LED optically focused total reflection lens (as shown in Figure 1); On its exiting surface (100 among Fig. 1), process densely covered small salient point or adopt frosted to handle the effect that realizes floodlight; The floodlight effect that these processing modes reach is all even inadequately, and the floodlight angle is little, and is low to the utilization rate of light.
In addition, the rotation bus of existing lens is generally straight line or parabola, and the lens sizes that satisfies light distribution requirements successively is all bigger.
Summary of the invention
The technical problem that the present invention will solve is, to the above-mentioned defective of prior art, a kind of floodlight total reflection lens is provided and uses the LED light fixture of this total reflection lens.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of floodlight total reflection lens; This total reflection lens rotation bus is the revolving body of broken line; The rotation bus of said revolving body is the broken line that four line segments join successively and form; The incidence surface of said total reflection lens is provided with the light source installing hole, and the exiting surface center of said total reflection lens is provided with the summit and drops on the conical concave surface on the said total reflection lens symmetry axis;
Said light source installing hole comprises blind cylindrical hole and the conical shrinkage pool that is extended internally and formed by said blind cylindrical hole; The symmetry axis of said blind cylindrical hole overlaps with the symmetry axis of said total reflection lens, and the summit of said conical shrinkage pool is dropped on the symmetry axis of said total reflection lens.
Floodlight total reflection lens of the present invention; Wherein, said four line segments are followed successively by first line segment, second line segment, the 3rd line segment and the 4th line segment, are initial point with the incidence surface center of said total reflection lens; Its symmetry axis is the X axle; The vertical straight line of also crossing initial point with the X axle is set up rectangular coordinate system for the Y axle, and the incidence surface diameter of said total reflection lens is d, then:
Said first line segment is 36.5 ° of angles to be starting point apart from initial point d/2 place on the Y axle with the X axle, is 10 ° of angles with the Y axle;
Said second line segment is a starting point with the terminal point of said first line segment, is 26.5 ° of angles with the X axle, is 20 ° of angles with the Y axle;
Said the 3rd line segment is a starting point with the terminal point of said second line segment, is 16.5 ° of angles with the X axle, is 30 ° of angles with the Y axle;
Said the 4th line segment is a starting point with the terminal point of said the 3rd line segment, is 6.5 ° of angles with the X axle, is 40 ° of angles with the Y axle.
Floodlight total reflection lens of the present invention; Wherein, The angle of the bus of said conical concave surface and said total reflection lens symmetry axis is θ, and said conical concave surface summit is L to the vertical range of said total reflection lens incidence surface, and then θ and L satisfy following formula:
θ＝90-α(η-L)/(2n-2)
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
Floodlight total reflection lens of the present invention; Wherein, The bus of said cone-shaped groove and the angle of said total reflection lens are θ, and the degree of depth of said blind cylindrical hole is
then θ and
satisfy following formula:
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
Floodlight total reflection lens of the present invention, wherein, said total reflection lens is by the transparent material injection mo(u)lding, and said transparent material comprises optical glass or optical plastic.
Floodlight total reflection lens of the present invention, wherein, the refractive index of said transparent material is greater than 1.45.
Another technical scheme that the present invention solves its technical problem employing is: construct a kind of LED light fixture, comprise LED, this light fixture also comprises above-mentioned described floodlight total reflection lens.
LED light fixture of the present invention, wherein, the luminous angle of said LED is 110-130 °.
LED light fixture of the present invention, wherein, the external diameter of said LED is less than or equal to 5mm.
LED light fixture of the present invention, wherein, the optical axis of said LED overlaps with the symmetry axis of said total reflection lens.
The floodlight total reflection lens of embodiment of the present invention; Have following beneficial effect: the rotation bus of floodlight total reflection lens of the present invention has adopted broken line, makes this total reflection lens volume when satisfying the requirement of luminous angle and realizing floodlighting can accomplish as much as possible little; The conical concave surface of its exiting surface and the conical shrinkage pool of bottom can enlarge the light angle of light source dipped beam shaft portion, have greatly improved the uniformity of illuminance of light fixture in luminous angle.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 be in the prior art floodlight lens structural representation;
Fig. 2 is the structural representation of a kind of floodlight total reflection lens of the present invention preferred embodiment;
Fig. 3 is the front view of a kind of floodlight total reflection lens of the present invention preferred embodiment;
Fig. 4 is the A-A view in the front view in a kind of floodlight total reflection lens of the present invention preferred embodiment;
Fig. 5 is the structural parameters figure of a kind of floodlight total reflection lens of the present invention preferred embodiment;
Fig. 6 is the index path of a kind of floodlight total reflection lens of the present invention preferred embodiment;
Fig. 7 is the distribution curve flux figure of a kind of floodlight total reflection lens of the present invention preferred embodiment.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are elaborated.
As shown in Figure 2, simultaneously referring to Fig. 3 and Fig. 4.In a preferred embodiment of the invention; This total reflection lens is the revolving body of broken line for the rotation bus; Wherein, The rotation bus of revolving body is joined successively by four line segments and forms, and its bottom is provided with the light source installing hole, and its exiting surface center is provided with the summit and drops on the conical concave surface 3 on the total reflection lens symmetry axis.Above-mentioned light source installing hole comprises blind cylindrical hole 1 that is positioned at total reflection lens incidence surface center and the conical shrinkage pool 2 that joins with blind cylindrical hole 1, and wherein blind cylindrical hole 1 is used to install light source.The symmetry axis of this blind cylindrical hole 1 overlaps with the symmetry axis of total reflection lens, and the summit of conical shrinkage pool 2 is dropped on the symmetry axis of total reflection lens, and understandable, and the diameter of blind cylindrical hole 1 equates with the incidence surface radius of conical shrinkage pool 2.
Further, as shown in Figure 5, the rotation bus broken line of total reflection lens is joined successively by four line segments and forms; Article four, line segment is followed successively by first line segment 101, second line segment 102, the 3rd line segment 103 and the 4th line segment 104; Incidence surface center with total reflection lens is an initial point, and its symmetry axis is the X axle, and the vertical straight line of also crossing initial point with the X axle is set up rectangular coordinate system for the Y axle; And the incidence surface diameter of definition total reflection lens is d, then:
The 3rd line segment 103 is a starting point with the terminal point of second line segment 102, is 16.5 ° of angles with the X axle, is 30 ° of angles with the Y axle;
The 4th line segment 104 is a starting point with the terminal point of the 3rd line segment 103, is 6.5 ° of angles with the X axle, is 40 ° of angles with the Y axle.
Article four, the parameter of line segment has not only determined the degree of depth h and the exiting surface diameter D of this total reflection lens, has also determined the luminous angle of this total reflection lens to a certain extent.The luminous angle of in a preferred embodiment of the invention, satisfying the total reflection lens of above-mentioned parameter is 80 °.
Further, the angle of the bus of conical concave surface 3 and total reflection lens symmetry axis is θ, and its summit is L to the vertical range of total reflection lens incidence surface, and then θ and L satisfy following formula:
θ＝90-α(η-L)/(2n-2)
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
In above-mentioned formula, L is slightly less than the degree of depth h of total reflection lens usually, generally gets L=0.6-0.8h.
Again; The bus of cone-shaped groove 2 and the angle of total reflection lens are θ, and the degree of depth of blind cylindrical hole 1 is
then θ and
satisfy following formula:
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
Above-mentioned formula is that the reverse derivation in luminous angle according to the light fixture requirement comes; The value of two θ can be the same or different; Purpose is to let cone-shaped groove 2 and conical concave surface 3 as far as possible in divergent rays, can light be reflected in the luminous angle of light fixture regulation to improve the light efficiency utilization rate of total reflection lens as far as possible.
Combine the concrete parameter of total reflection lens that the present invention is described further at present:
Suppose that total reflection lens adopts the PC material as lens material, the refractive index of PC material is 1.59, and rotation bus broken line satisfies above-mentioned parameter, and light source inserts the external diameter of blind cylindrical hole 1 less than 3mm, and other concrete structure parameters are as shown in the table:
The index path of total reflection lens that satisfies the said structure parameter is as shown in Figure 6, and the light of light source mid portion has enlarged angle through the refraction of total reflection lens, and the light of other parts is through outgoing after the total reflection.Light is towards the light of total reflection lens symmetry axis one side direction outgoing, and its exit direction is towards the opposite side direction of symmetry axis, and promptly light is the outgoing of intersection mode.Distribution curve flux figure is as shown in Figure 7.Can find out that from distribution curve flux figure the lamp luminescence angle is 80 °, and illumination is very even in this luminous angle.
Preferably, above-mentioned total reflection lens is by the transparent material injection mo(u)lding, and transparent material comprises optical glass or optical plastic, and the refractive index of transparent material is greater than 1.45.In addition, plate and increase anti-film in the side of total reflection lens again for the reflectivity that improves total reflection lens.
In another specific embodiment of the present invention, a kind of LED light fixture comprises above-mentioned floodlight total reflection lens and the LED that is located in this floodlight total reflection lens light source installing hole, and the luminous angle of this LED is 110 °, also can be 120 ° or 130 °.It should be noted that the external diameter of LED had better not surpass 5mm in order to guarantee the result of use of floodlight total reflection lens, is 4mm among this embodiment, as required, also can be 3mm.Further, when placing LED, should guarantee that the optical axis of LED overlaps with the optical axis of total reflection lens (being symmetry axis), and should let the luminescence chip of LED lamp drop on the incidence surface of total reflection lens.
Above embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement in view of the above, can not limit protection scope of the present invention.All equalizations of being done with claim scope of the present invention change and modify, and all should belong to the culvert difference scope of claim of the present invention.
Claims (10)
1. floodlight total reflection lens; It is characterized in that; This total reflection lens is the revolving body of broken line for the rotation bus; The rotation bus of this revolving body is the broken line that four line segments join successively and form, and the incidence surface of said total reflection lens is provided with the light source installing hole, and the exiting surface center of said total reflection lens is provided with the summit and drops on the conical concave surface (3) on the said total reflection lens symmetry axis;
Said light source installing hole comprises blind cylindrical hole (1) and the conical shrinkage pool (2) that is extended internally and formed by said blind cylindrical hole (1); The symmetry axis of said blind cylindrical hole (1) overlaps with the symmetry axis of said total reflection lens, and the summit of said conical shrinkage pool (2) is dropped on the symmetry axis of said total reflection lens.
2. floodlight total reflection lens according to claim 1; It is characterized in that said four line segments are respectively first line segment (101), second line segment (102), the 3rd line segment (103) and the 4th line segment (104), is initial point with the incidence surface center of said total reflection lens; The symmetry axis of said total reflection lens is the X axle; The vertical straight line of also crossing initial point with the X axle is set up rectangular coordinate system for the Y axle, and the incidence surface diameter of said total reflection lens is d, then:
Said first line segment (101) is 36.5 ° of angles to be starting point apart from initial point d/2 place on the Y axle with the X axle, is 10 ° of angles with the Y axle;
Said second line segment (102) is a starting point with the terminal point of said first line segment (101), is 26.5 ° of angles with the X axle, is 20 ° of angles with the Y axle;
Said the 3rd line segment (103) is a starting point with the terminal point of said second line segment (102), is 16.5 ° of angles with the X axle, is 30 ° of angles with the Y axle;
Said the 4th line segment (104) is a starting point with the terminal point of said the 3rd line segment (103), is 6.5 ° of angles with the X axle, is 40 ° of angles with the Y axle.
3. floodlight total reflection lens according to claim 1; It is characterized in that; The bus of said conical concave surface (3) and the angle of said total reflection lens symmetry axis are θ; The summit of said conical concave surface is L to the vertical range of said total reflection lens incidence surface, and then θ and L satisfy following formula:
θ＝90-α(η-L)/(2n-2)
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
4. floodlight total reflection lens according to claim 3; It is characterized in that; The bus of said cone-shaped groove (2) and the angle of said total reflection lens are θ, and the degree of depth of said blind cylindrical hole (1) is
then θ and
satisfy following formula:
In the formula, α=15 °, η=1.9～2.0, and η＞n, n is the refractive index of total reflection lens.
5. floodlight total reflection lens according to claim 1 is characterized in that, said total reflection lens is by the transparent material injection mo(u)lding, and said transparent material comprises optical glass or optical plastic.
6. floodlight total reflection lens according to claim 5 is characterized in that the refractive index of said transparent material is greater than 1.45.
7. a LED light fixture comprises LED, it is characterized in that, this light fixture also comprises the arbitrary described floodlight total reflection lens of claim 1 to 6.
8. LED light fixture according to claim 7 is characterized in that, the luminous angle of said LED is 110-130 °.
9. according to claim 7 or 8 described LED light fixtures, it is characterized in that the external diameter of said LED is less than or equal to 5mm.
10. LED light fixture according to claim 9 is characterized in that, the optical axis of said LED overlaps with the symmetry axis of said total reflection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110101038.4A CN102748707B (en) | 2011-04-21 | 2011-04-21 | Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110101038.4A CN102748707B (en) | 2011-04-21 | 2011-04-21 | Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens |
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| CN102748707A true CN102748707A (en) | 2012-10-24 |
| CN102748707B CN102748707B (en) | 2014-05-14 |
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| CN201110101038.4A Active CN102748707B (en) | 2011-04-21 | 2011-04-21 | Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103075710A (en) * | 2012-12-15 | 2013-05-01 | 张家港市瑞腾科技有限公司 | LED (Light-Emitting Diode) lamp plate and lamp provided with same |
| CN103335247A (en) * | 2013-06-21 | 2013-10-02 | 周玉龙 | Window washing lamp |
| CN103529498A (en) * | 2013-10-30 | 2014-01-22 | 谭光世 | Lens |
| CN103672732A (en) * | 2013-12-11 | 2014-03-26 | 深圳市华星光电技术有限公司 | Quantum dot lens and manufacturing method thereof |
| CN103672609A (en) * | 2013-12-02 | 2014-03-26 | 深圳市华星光电技术有限公司 | Light source with quantum dots and manufacturing method and application of light source with quantum dots |
| CN103883975A (en) * | 2012-12-19 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | Optical lens and lighting emitting element using same |
| CN104235759A (en) * | 2013-06-07 | 2014-12-24 | 雷笛克光学股份有限公司 | Optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103075710A (en) * | 2012-12-15 | 2013-05-01 | 张家港市瑞腾科技有限公司 | LED (Light-Emitting Diode) lamp plate and lamp provided with same |
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| CN104676468B (en) * | 2013-11-29 | 2019-10-15 | 海洋王（东莞）照明科技有限公司 | The LED lamp of lens subassembly and the application lens subassembly |
| CN103672609A (en) * | 2013-12-02 | 2014-03-26 | 深圳市华星光电技术有限公司 | Light source with quantum dots and manufacturing method and application of light source with quantum dots |
| CN103672732A (en) * | 2013-12-11 | 2014-03-26 | 深圳市华星光电技术有限公司 | Quantum dot lens and manufacturing method thereof |
| CN113310031A (en) * | 2021-05-08 | 2021-08-27 | 江苏大学 | Polarizing lens of LED blackboard lamp |
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