CN208204891U - 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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- CN208204891U CN208204891U CN201820945040.7U CN201820945040U CN208204891U CN 208204891 U CN208204891 U CN 208204891U CN 201820945040 U CN201820945040 U CN 201820945040U CN 208204891 U CN208204891 U CN 208204891U
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Abstract
The utility model 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 point and the relative distance of b point in the axial direction are greater than the 1/2 of a point and the relative distance of c point in the axial direction.Lens provided by the utility model, setting based on position, height and slope to the second incidence surface, so that the light issued by the central point of luminescence unit, the incidence angle of all incident rays on the second incidence surface is incident on less than 20 °, it is avoided with this problem of Fresnel reflection occurs for the second incidence surface, to solve the problems, such as the bright ring that the hot spot outer ring of existing TIR lens occurs.
Description
Technical field
The utility model belongs to lighting technical field, in particular to a kind of lens and light source module group.
Background technique
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
Go out light after reflection completely.TIR lens are widely used in the lighting systems such as searchlight, flashlight.
TIR low-angle 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, apparent bright ring problem can be caused in the outer ring of center spot due to Fresnel reflection.In order to change
Kind this problem, currently used solution have: 1. use light output surface frosted or do the processing modes such as micro-structure, still
It will lead to beam angle in this way to become larger, 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, frosted or micro-structure processing is done in lens light-emitting surface on this basis, finally reaches 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.
Utility model content
Purpose of the utility model is to solve the above problems, provide a kind of lens, full in beam angle and central light strength
Under the premise of foot requires and do not change the size 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 utility model provides a kind of lens, including inner surface, outer surface and for accommodating
The accommodating chamber of luminescence unit, the wall surface of the accommodating chamber are 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 is connect with first light in part and the axisymmetrical relative to the lens, and described second enters light
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 highest point be a point, second incidence surface relative to the light-emitting surface highest point be b point, described second
Incidence surface is c point relative to the minimum point of the light-emitting surface, and by a point to the c point, second incidence surface is to far from institute
The direction inclination of axis and the absolute value of the slope of second incidence surface are stated between 0.36~2.75, a point and b point exist
Relative distance on the axis direction is greater than the 1/2 of a point and relative distance of the c point on the axis direction,
The outer surface includes connected reflecting surface and light-emitting surface, 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 accommodating chamber.
Further, the reflecting surface is cambered surface.
Further, the lens are rotary type lens or tension type lens.
Further, the lens using PMMA material or use PC material.
Further, the light issued 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 utility model provides a kind of light source module group, including light source board, setting in the light source
Luminescence unit and said lens on plate, the luminescence unit are housed in the accommodating chamber, and the luminescence unit is relative to institute
State axisymmetrical.
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.
The utility model has the advantages that lens provided by the utility model, in the position close to luminescence unit, setting on inner surface
To inclined second incidence surface in direction far from axis, based on the position to the second incidence surface, height and slope
Setting, so that the light issued by the central point of luminescence unit, is incident on the incidence of all incident rays on the second incidence surface
Angle is avoided with this problem of Fresnel reflection occurs for the second incidence surface, to solve existing TIR lens less than 20 °
The bright ring problem that occurs of hot spot outer ring.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is a kind of stereoscopic schematic diagram of lighting device provided by the embodiment of the utility model；
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 by the embodiment of the utility model.
Fig. 5 is the diagrammatic cross-section of another lens provided by the embodiment of the utility model.
Specific embodiment
It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment
It is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to the utility model
The range of protection.
In conjunction with shown in Fig. 1 to Fig. 5, the utility model provides a kind of lighting device 100, including shell 30, is housed in shell
Light source board 21 in body 30, the luminescence unit 22 being arranged on light source board 21, the optical element 10 being connect with shell 30, wherein
Optical element 10 includes several lens 1 with accommodating chamber 14, and luminescence unit 22 is housed in accommodating chamber 14, luminescence unit 22
The light of sending is 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 between each element and element in lighting device 100 provided by the embodiment of the utility model
Relationship 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 are arranged 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 source or other light sources.
Optical element 10 can be made of PMMA material, PC material or other materials, can be used and be snapped connection
Mode is connect with shell 30.Specifically, optical element 10 includes matrix 2 and several lens 1 that 2 side of matrix is arranged in.Thoroughly
Mirror 1 has inner surface 11, outer surface 12, bottom surface 13 and the accommodating chamber 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
Symmetrical structure can may be tension type lens for 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 accommodating chamber
14 bottom surface, the first light in part 111 is plane or is concavely formed cambered surface to the inside of accommodating chamber 14, and the second light in part 112 is to receive
The side of cavity 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 two sides of the first light in part.
Specifically, as shown in connection with 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 highest point of 22 light-emitting surface 221 is a point, and the second incidence surface 1122 is b point relative to the highest point of light-emitting surface 221, and second enters
Smooth surface 1122 is c point relative to the minimum point of light-emitting surface 221, and a point and relative distance of the b point on 110 direction of axis are h1, b
Point and c point are h2 in the relative distance on 110 direction of axis, and a point and relative distance of the c point on 110 direction of axis are h.
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 point to c point, 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 issued by origin o, all incidences being incident on the second incidence surface 1122
Angle α is respectively less than 20 °.
Outer surface 12 includes connected reflecting surface 121 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 issues 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, 20 ° are respectively less than by the incident angle α of the origin o all incident rays being incident on the second incidence surface 1122.
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 issued 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.
As shown in connection with 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 point to c point, 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 the second incidence surface 1122 between 0.36~2.75,
The incident angle α of all incident rays on the second incidence surface 1122 is then incident on by origin o less than 20 °.
Since the light issued 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 structural strength of lens 1.
The lens of the utility model embodiment, in the position close to luminescence unit on inner surface, based on entering light to second
The setting of the position, height and slope in face, so that the light issued by the central point of luminescence unit, is incident on the second incidence surface
All incident rays incidence angle less than 20 °, with this avoid the second incidence surface occur Fresnel reflection the problem of, thus
Solves the problems, such as the bright ring that the hot spot outer ring of existing TIR lens occurs.
Above-described specific example has carried out further the purpose of this utility model, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this reality the foregoing is merely specific embodiment of the utility model
With novel, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all include
It is within the protection scope of the utility model.
Claims (12)
1. a kind of lens, including inner surface, outer surface and accommodating chamber for accommodating luminescence unit, the wall surface of the accommodating chamber
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 the axisymmetrical relative to the lens, second light in part include
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 highest point of light-emitting surface is a point, and second incidence surface is b point relative to the highest point of the light-emitting surface, and described second enters light
Face is c point relative to the minimum point of the light-emitting surface, and by a point to the c point, 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 point is with b point described
Relative distance on axis direction is greater than the 1/2 of a point and relative distance of the c point on the axis direction,
The outer surface includes connected reflecting surface and light-emitting surface, 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 accommodating chamber
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 material or use PC material.
10. lens according to claim 1, which is characterized in that the light issued by the central point of the luminescence unit enters
The incidence angle of second incidence surface is mapped to 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 lens described in any one of 1-10, the luminescence unit is housed in the accommodating chamber, 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 connect the 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 |
|---|---|---|---|
| CN201820945040.7U CN208204891U (en) | 2018-06-19 | 2018-06-19 | A kind of lens and light source module group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820945040.7U CN208204891U (en) | 2018-06-19 | 2018-06-19 | A kind of lens and light source module group |
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| Publication Number | Publication Date |
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| CN208204891U true CN208204891U (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820945040.7U Active CN208204891U (en) | 2018-06-19 | 2018-06-19 | A kind of lens and light source module group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775553A (en) * | 2018-06-19 | 2018-11-09 | 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 CN201820945040.7U patent/CN208204891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775553A (en) * | 2018-06-19 | 2018-11-09 | 苏州欧普照明有限公司 | A kind of lens and light source module group |
| CN108775553B (en) * | 2018-06-19 | 2023-07-25 | 苏州欧普照明有限公司 | Lens and light source module |
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