CN108775553A - A kind of lens and light source module group - Google Patents
A kind of lens and light source module group Download PDFInfo
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- CN108775553A CN108775553A CN201810630267.7A CN201810630267A CN108775553A CN 108775553 A CN108775553 A CN 108775553A CN 201810630267 A CN201810630267 A CN 201810630267A CN 108775553 A CN108775553 A CN 108775553A
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- light
- incidence surface
- lens
- incidence
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of lens and light source module groups, lens are axially symmetric structure, its inner surface includes the first light in part and the second light in part, second light in part includes the first incidence surface and the second incidence surface, first incidence surface is connected between the first light in part and the second incidence surface, first incidence surface and the second incidence surface are plane, second incidence surface is tilted to the direction far from axis and the absolute value of its slope is between 0.36~2.75, and a points are more than the 1/2 of a points and the relative distance of c points in the axial direction with the relative distance of b points in the axial direction.Lens provided by the invention, based on the setting to the position of the second incidence surface, height and slope, so that the light sent out by the central point of luminescence unit, the incidence angle for being incident on all incident rays on the second incidence surface is less than 20 °, it is avoided the problem of Fresnel reflection occurs for the second incidence surface with this, to solve the problems, such as bright ring that the hot spot outer ring of existing TIR lens occurs.
Description
Technical field
The invention belongs to lighting technical field, more particularly to a kind of lens and light source module group.
Background technology
TIR lens are the abbreviation of total internal reflection lens, the light of light source are received light by lens, and complete through lens interior
Complete light extraction after reflection.TIR lens are widely used in the lighting systems such as searchlight, flashlight.
TIR low-angles lens (beam angle≤12 °) on the market at present, the side of inner surface is mostly inclined-plane.By in this way
Lens outgoing light, can apparent bright ring problem be caused in the outer ring of center spot due to Fresnel reflection.In order to change
It is apt to this problem, currently used solution has：1. using light output surface frosted or doing the processing modes such as micro-structure, still
Beam angle can be caused to become larger in this way, central light strength becomes smaller, and is unable to reach the effect of the high light intensity of low-angle；2. a lens sizes are done
Greatly so that beam angle is met the requirements, and is done frosted or micro-structure processing in lens light-emitting surface on this basis, is finally reached small angle
The purpose of high light intensity is spent, but the size for increasing lens just will increase the size of lamp body, to will appear small-power large scale lamp
The problem of tool.
Then, how under the premise of beam angle and central light strength are met the requirements and do not change the size of lens, lens are solved
Hot spot outer ring there is the problem of bright ring, be row those skilled in the art's urgent problem to be solved.
Invention content
The purpose of the present invention is to solve the above problems, provide a kind of lens, are wanted in beam angle and central light strength satisfaction
Under the premise of asking and not changing the sizes of lens, solves the problems, such as the bright ring that the hot spot outer ring of lens occurs.
To achieve the above object, the present invention provides a kind of lens, including inner surface, outer surface and luminous for accommodating
The wall surface of the host cavity of unit, the host cavity is the inner surface, wherein
The lens are axially symmetric structure,
The inner surface includes the first light in part and the second light in part, first light in part and the luminescence unit phase
Right, second light in part connect with first light in part and enters light relative to the axisymmetrical of the lens, described second
Portion includes the first incidence surface and the second incidence surface, and first incidence surface is connected to first light in part and described second and enters light
Between face, first incidence surface and second incidence surface are plane, and first incidence surface is relative to the luminous list
Member light-emitting surface peak be a points, second incidence surface relative to the light-emitting surface peak be b points, described second
Incidence surface is c points relative to the minimum point of the light-emitting surface, and by a points to the c points, second incidence surface is to far from institute
The direction for stating axis tilts and the absolute value of the slope of second incidence surface is between 0.36~2.75, and a points exist with b points
Relative distance on the axis direction is more than the 1/2 of a points and relative distance of the c points on the axis direction,
The outer surface includes the reflecting surface and light-emitting surface being connected, and the light-emitting surface is opposite with first light in part, institute
State the periphery that reflecting surface is set to second light in part.
Further, the angle between first incidence surface and the axis is within 5 °.
Further, first incidence surface is parallel with the axis.
Further, second light in part further includes third incidence surface, and second incidence surface is connected to described first
Between incidence surface and the third incidence surface, the angle between first incidence surface and the axis is within 5 °.
Further, the third incidence surface is parallel with the axis.
Further, first light in part is horizontal plane or is concavely formed cambered surface to the inside of the host cavity.
Further, the reflecting surface is cambered surface.
Further, the lens are rotary type lens or tension type lens.
Further, the lens using PMMA materials or use PC materials.
Further, the light sent out by the central point of the luminescence unit is incident on the incidence of second incidence surface
Angle is less than 20 °.
To achieve the above object, the present invention provides a kind of light source module groups, including light source board, setting are on the light source board
Luminescence unit and said lens, the luminescence unit be housed in the host cavity, the luminescence unit is relative to the axis
Line is symmetrical.
Further, the lens further include the bottom surface for connecting the inner surface and the outer surface, the bottom surface connection
In the light source board.
Advantageous effect：Lens provided by the invention close to the position of luminescence unit, are being arranged to far from axis on inner surface
Inclined second incidence surface in direction of line, based on the setting to the position of the second incidence surface, height and slope so that single by shining
The light that the central point of member is sent out, the incidence angle for being incident on all incident rays on the second incidence surface are less than 20 °, are avoided with this
The problem of Fresnel reflection occurs for the second incidence surface, to solve the bright of the hot spot outer rings of existing TIR lens appearance
Ring problem.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of stereoscopic schematic diagram of lighting device provided in an embodiment of the present invention；
Fig. 2 is the stereogram exploded view of the lighting device of Fig. 1；
Fig. 3 is the stereogram exploded view of another angle of the lighting device of Fig. 1；
Fig. 4 is a kind of diagrammatic cross-section of lens provided in an embodiment of the present invention.
Fig. 5 is the diagrammatic cross-section of another lens provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
In conjunction with shown in Fig. 1 to Fig. 5, the present invention provides a kind of lighting device 100, including shell 30, it is housed in shell 30
Interior light source board 21, the luminescence unit 22 being arranged on light source board 21, the optical element 10 being connect with shell 30, wherein optics
Element 10 includes several lens 1 with host cavity 14, and luminescence unit 22 is housed in host cavity 14, and luminescence unit 22 is sent out
Light be emitted after 1 light distribution of lens.The lighting device 100 can be applied to Projecting Lamp, have preferable light-out effect.
Below for the connection relation between each element and element in lighting device 100 provided in an embodiment of the present invention
It illustrates.
In the present embodiment, on the continuing surface (not indicating) that light source board 21 is fixed in shell 30, it is arranged on light source board 21
There are multiple luminescence units 22, multiple luminescence units 22 to arrange in a ring on light source board 21.Luminescence unit 22 has light-emitting surface
221.Optical element 10 includes multiple lens 1, and lens 1 are rotary type structure, and lens 1 are one-to-one to be covered in the upper of luminescence unit 22
Side.In other alternate embodiments, lens 1 can also be tension type structure, at this point, the prolonging along lens 1 of luminescence unit 22
Direction sequence is stretched to arrange.Luminescence unit 22 can be LED light source, TL light sources or other light sources.
Optical element 10 may be used PMMA materials, PC materials or other materials and be made, and may be used and snaps connection
Mode is connect with shell 30.Specifically, optical element 10 includes matrix 2 and is arranged several lens 1 in 2 side of matrix.Thoroughly
Mirror 1 has inner surface 11, outer surface 12, bottom surface 13 and the host cavity 14 for connecting inner surface 11 and outer surface 12, wherein receiving
The wall surface of chamber 14 is inner surface 11, and bottom surface 13 is connected to light source board 21 using the modes such as fitting or positioning column positioning.Lens 1 are axis
It may be tension type lens that symmetrical structure, which can be rotary type lens, when lens 1 are rotary type structure, axis 110
For its rotary shaft；When lens 1 are tension type structure, axis 110 is its symmetry axis.
Below for the structure of lens 1, explain：
Inner surface 11 includes the first light in part 111 and the second light in part 112, the first light in part 111 and 22 phase of luminescence unit
Right, the second light in part 112 is connect and symmetrical relative to axis 110 with the first light in part 111.First light in part 111 is host cavity
14 bottom surface, the first light in part 111 is plane or is concavely formed cambered surface to the inside of host cavity 14, and the second light in part 112 is to receive
The side of vessel 14.When lens 1 are rotary type lens, the second light in part 112 is periphery；When lens 1 are extended lens
When, the second light in part 112 is two extended surfaces being oppositely arranged positioned at 111 both sides of the first light in part.
Specifically, in conjunction with shown in Fig. 4, the second light in part 112 includes that the first incidence surface 1121 and second being linked in sequence enters
Smooth surface 1122, the first incidence surface 1121 are connected between the first light in part 111 and the second incidence surface 1122, that is, the second incidence surface
1122 are located at the lower section of the first incidence surface 1121.First incidence surface 1121 and the second incidence surface 1122 are plane, that is, in lens
On 1 axis section, the first incidence surface 1121 and the second incidence surface 1122 are linearly.First incidence surface 1121 and axis 110 are flat
Row, or can also be tilted within 5 ° according to actual processing needs.
The central point for defining the light-emitting surface 221 of luminescence unit 22 is origin o, and the first incidence surface 1121 is relative to luminescence unit
The peak of 22 light-emitting surface 221 is a points, and the second incidence surface 1122 is b points relative to the peak of light-emitting surface 221, and second enters
Smooth surface 1122 is c points relative to the minimum point of light-emitting surface 221, and a points are h1, b with relative distance of the b points on 110 direction of axis
Point and c points are h2 in the relative distance on 110 direction of axis, and a points are h with relative distance of the c points on 110 direction of axis.
In the present embodiment, h2 < 1/2h and h1 > 1/2h, that is to say, that the second incidence surface 1122 is located under the second light in part 112
In half portion by stages.By b points to c points, the second incidence surface 1122 is tilted to the direction far from axis 110, the second incidence surface 1122
Slope absolute value between 0.36-2.75.Based on the setting to the second incidence surface 1122 position and height, in conjunction with to second
The setting of the slope of incidence surface 1122 so that the light sent out by origin o, all incidences being incident on the second incidence surface 1122
Angle α is respectively less than 20 °.
Outer surface 12 includes the reflecting surface 121 being connected and light-emitting surface 122, and light-emitting surface 122 and the first light in part 111 are opposite,
Reflecting surface 121 is set to the periphery of the second light in part 112.In the present embodiment, light-emitting surface 122 is plane, other replaceable
Embodiment in, light-emitting surface 122 can also be curved surface.Reflecting surface 121 is cambered surface, and is total internal reflection surface.
The light that luminescence unit 22 is sent out enters lens 1 by the first light in part 111 or the second light in part 112.Entered by first
Light portion 111 enter lens 1 anaclasis to light-emitting surface 122 and by light-emitting surface 122 refraction after be emitted, by the second light in part 112 into
The light for entering lens 1 is emitted after reflecting surface 121 is reflected into light-emitting surface 122 and is reflected by light-emitting surface 122, and in the axis of lens 1
On section, the incident angle α for all incident rays being incident on the second incidence surface 1122 by origin o is respectively less than 20 °.
When incident ray is incident to the second incidence surface 1122, if incidence angle is larger, it is easy for Fresnel phenomenon occur.
So the light sent out by origin o is incident to the control of the incident angle α on the second incidence surface 1122 within 20 °, incident ray
The reflex generated by Fresnel reflection characteristic would not occur, so as to avoid the light being emitted by lens 1, surface
There is the problem of hot spot bright ring.
In conjunction with shown in Fig. 5, in one embodiment, the second light in part 112 of lens 1 includes the first incidence surface being linked in sequence
1121, the second incidence surface 1122 and third incidence surface 1123, the first incidence surface 1121 are connected to the first light in part 111 and second and enter
Between smooth surface 1122, that is, the second incidence surface 1122 is located at the lower section of the first incidence surface 1121, and third incidence surface 1123 is located at second
The lower section of incidence surface 1122.First incidence surface 1121, the second incidence surface 1122 and third incidence surface 1123 are plane.First enters
Smooth surface 1121 and third incidence surface 1123 are parallel with axis 110, or can also according to actual processing needs, tilt 5 ° with
It is interior.In the present embodiment, h2 < 1/2h and h1 > 1/2h, that is to say, that the second incidence surface 1122 is located at the second light in part 112
In the section of lower half portion.By b points to c points, the second incidence surface 1122 is tilted to the direction far from axis 110, the second incidence surface
The condition met required for 1122 gradient is：The absolute value of the slope of second incidence surface 1122 between 0.36~2.75,
The incident angle α that all incident rays on the second incidence surface 1122 are then incident on by origin o is less than 20 °.
Since the light sent out by origin o is incident to the control of the incident angle α on the second incidence surface 1122 within 20 °, enter
It is mapped to the incident ray of the second incidence surface 1122, is not in the reflex generated by Fresnel reflection characteristic.Wherein,
Three incidence surfaces 1123 are arranged in parallel to the plane of axis 110 close to light source board 21, to avoid the bottom surface 130 of lens 1 and light
When source plate 21 connects, the bottom thickness of lens 1 is excessively thin and influences the overall construction intensity of lens 1.
The lens of the embodiment of the present invention, close to the position of luminescence unit on inner surface, based on to the second incidence surface
The setting of position, height and slope so that the light sent out by the central point of luminescence unit, the institute being incident on the second incidence surface
There is the incidence angle of incident ray to be less than 20 °, is avoided the problem of Fresnel reflection occurs for the second incidence surface, to solve with this
The bright ring problem that the hot spot outer ring of existing TIR lens occurs.
Above-described specific example has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Illustrate, it should be understood that the above is only a specific embodiment of the present invention, be not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (12)
1. a kind of lens, including inner surface, outer surface and the host cavity for accommodating luminescence unit, the wall surface of the host cavity
For the inner surface, which is characterized in that
The lens are axially symmetric structure,
The inner surface includes the first light in part and the second light in part, and first light in part is opposite with the luminescence unit, institute
State that the second light in part is connect with first light in part and relative to the axisymmetrical of the lens, second light in part includes
First incidence surface and the second incidence surface, first incidence surface be connected to first light in part and second incidence surface it
Between, first incidence surface and second incidence surface are plane, and first incidence surface is relative to the luminescence unit
The peak of light-emitting surface is a points, and second incidence surface is b points relative to the peak of the light-emitting surface, and described second enters light
Face is c points relative to the minimum point of the light-emitting surface, and by a points to the c points, second incidence surface is to far from the axis
The direction of line tilts and the absolute value of the slope of second incidence surface is between 0.36~2.75, and a points are with b points described
Relative distance on axis direction is more than the 1/2 of a points and relative distance of the c points on the axis direction,
The outer surface includes the reflecting surface and light-emitting surface being connected, and the light-emitting surface is opposite with first light in part, described anti-
The face of penetrating is set to the periphery of second light in part.
2. lens according to claim 1, which is characterized in that the angle between first incidence surface and the axis exists
Within 5 °.
3. lens according to claim 2, which is characterized in that first incidence surface is parallel with the axis.
4. lens according to claim 1, which is characterized in that second light in part further includes third incidence surface, described
Second incidence surface is connected between first incidence surface and the third incidence surface, first incidence surface and the axis it
Between angle within 5 °.
5. lens according to claim 4, which is characterized in that the third incidence surface is parallel with the axis.
6. lens according to claim 1, which is characterized in that first light in part is horizontal plane or to the host cavity
Inside be concavely formed cambered surface.
7. lens according to claim 1, which is characterized in that the reflecting surface is cambered surface.
8. lens according to claim 1, which is characterized in that the lens are rotary type lens or tension type lens.
9. lens according to claim 1, which is characterized in that the lens are using PMMA materials or use PC materials.
10. lens according to claim 1, which is characterized in that the light sent out by the central point of the luminescence unit enters
The incidence angle for being mapped to second incidence surface is less than 20 °.
11. a kind of light source module group, which is characterized in that including light source board, the luminescence unit being arranged on the light source board and right
It is required that the lens described in any one of 1-10, the luminescence unit is housed in the host cavity, the luminescence unit relative to
The axisymmetrical.
12. light source module group according to claim 11, which is characterized in that the lens further include the connection inner surface and
The bottom surface of the outer surface, the bottom surface are connected to the light source board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630267.7A CN108775553B (en) | 2018-06-19 | 2018-06-19 | Lens and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630267.7A CN108775553B (en) | 2018-06-19 | 2018-06-19 | Lens and light source module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775553A true CN108775553A (en) | 2018-11-09 |
| CN108775553B CN108775553B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630267.7A Active CN108775553B (en) | 2018-06-19 | 2018-06-19 | Lens and light source module |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251383A (en) * | 2021-06-04 | 2021-08-13 | 浙江光锥科技有限公司 | TIR collimating lens |
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| CN1404630A (en) * | 2000-12-22 | 2003-03-19 | 皇家菲利浦电子有限公司 | LED module |
| JP2009009926A (en) * | 2007-03-23 | 2009-01-15 | Toshiba Lighting & Technology Corp | Light emitting diode lighting system |
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| CN105929469A (en) * | 2016-06-30 | 2016-09-07 | 成都恒坤光电科技有限公司 | Lens, lighting device and high-beam illumination optical system for motor vehicle |
| CN207018852U (en) * | 2017-07-25 | 2018-02-16 | 深圳市兆码电子有限公司 | A kind of LED reflection lens |
| CN207080826U (en) * | 2017-03-30 | 2018-03-09 | 佛山指南针光学科技有限公司 | A kind of compound total reflection LED spotlight lens |
| CN208204891U (en) * | 2018-06-19 | 2018-12-07 | 苏州欧普照明有限公司 | A kind of lens and light source module group |
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2018
- 2018-06-19 CN CN201810630267.7A patent/CN108775553B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404630A (en) * | 2000-12-22 | 2003-03-19 | 皇家菲利浦电子有限公司 | LED module |
| JP2009009926A (en) * | 2007-03-23 | 2009-01-15 | Toshiba Lighting & Technology Corp | Light emitting diode lighting system |
| CN105465627A (en) * | 2015-12-30 | 2016-04-06 | 欧普照明股份有限公司 | Light beam control device and light-emitting device |
| CN105929469A (en) * | 2016-06-30 | 2016-09-07 | 成都恒坤光电科技有限公司 | Lens, lighting device and high-beam illumination optical system for motor vehicle |
| CN207080826U (en) * | 2017-03-30 | 2018-03-09 | 佛山指南针光学科技有限公司 | A kind of compound total reflection LED spotlight lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113251383A (en) * | 2021-06-04 | 2021-08-13 | 浙江光锥科技有限公司 | TIR collimating lens |
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| Publication number | Publication date |
|---|---|
| CN108775553B (en) | 2023-07-25 |
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