CN215636690U - Lens and lamp with same - Google Patents
Lens and lamp with same Download PDFInfo
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- CN215636690U CN215636690U CN202023003400.8U CN202023003400U CN215636690U CN 215636690 U CN215636690 U CN 215636690U CN 202023003400 U CN202023003400 U CN 202023003400U CN 215636690 U CN215636690 U CN 215636690U
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Abstract
The utility model discloses a lens and a lamp with the lens, wherein the lens comprises: light source department, first lateral part and second lateral part of setting, the second lateral part includes: a first light inlet surface; the first connecting surface is connected with the outer end of the first light inlet surface; the first total reflection surface is obliquely arranged outwards relative to the main optical axis and is used for totally reflecting the incident light from the first light inlet surface to the outside; a second total reflection surface, which is arranged obliquely outward relative to the main optical axis, has one end connected with the free end of the first connection surface, and is used for receiving and totally reflecting the reflected light from the first total reflection surface; one end of the third total reflection surface is connected with the free end of the second total reflection surface and is used for totally reflecting the reflected light from the second total reflection surface; and the first light-emitting surface emits the reflected light from the third total reflection surface, and the maximum light intensity direction of the second light beam emitted from the first light-emitting surface is intersected with the main optical axis.
Description
Technical Field
The utility model relates to the technical field of lighting, in particular to a lens and a lamp with the lens.
Background
With the popularization of LED lamps, more and more occasions begin to use LED lamps, such as home lighting in bedrooms, kitchens, living rooms and the like, and commercial lighting in refrigerators, cold chains, shelves and the like.
The LED chip is a point light source, and the light intensity distribution is fixed, but in actual use, it needs to focus or illuminate uniformly in a large area.
With the development of lighting technology, new requirements are also provided, in indoor lighting, particularly products such as refrigerators and shelves, efficient single-side large-area lighting is often required at corners, and meanwhile, the size is required to be miniaturized, and at the moment, the existing lamp cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a lens and a lamp with the lens to solve the above technical problems.
A lens, comprising:
the light source is arranged and provided with a main optical axis, a longitudinal axis and a transverse axis which penetrate through the center of the light source and are vertical to each other;
the first side part and the second side part are respectively positioned on two sides of the main optical axis in the plane where the main optical axis and the transverse axis are positioned, a light source arranged at the light source position emits a first light beam after light distribution of the first side part, and a reverse extension line of the maximum light intensity direction of the first light beam is intersected with the main optical axis;
the second side portion includes:
a first light inlet surface;
the first connecting surface is connected with the outer end of the first light inlet surface;
the first total reflection surface is obliquely arranged outwards relative to the main optical axis and is used for totally reflecting the incident light from the first light inlet surface to the outside;
a second total reflection surface, which is arranged obliquely outward relative to the main optical axis, has one end connected with the free end of the first connection surface, and is used for receiving and totally reflecting the reflected light from the first total reflection surface;
a third total reflection surface which is arranged in an inclined manner relative to the main optical axis, has one end connected with the free end of the second total reflection surface and is used for totally reflecting the reflected light from the second total reflection surface;
the first light-emitting surface is connected with the free ends of the second total reflection surface and the third total reflection surface and emits reflected light from the third total reflection surface, and the maximum light intensity direction of a second light beam emitted from the first light-emitting surface is intersected with the main optical axis.
Preferably, the first side portion includes:
a second light inlet surface;
the second connecting surface is connected with the outer end of the second light inlet surface;
the fourth total reflection surface is obliquely arranged outwards relative to the main optical axis and is used for totally reflecting incident light which comes from the second light inlet surface and is close to the main optical axis part outwards;
the second light-emitting surface is used for emitting the reflected light from the fourth total reflection surface to form a first light beam;
a fifth total reflection surface, which is arranged obliquely outward relative to the main optical axis, and one end of which is connected with the free end of the second connection surface, and totally reflects the incident light from the second light inlet surface far away from the main optical axis part to generate the reflected light close to the main optical axis;
and the third light-emitting surface is positioned above the fifth total reflection surface and used for emitting the reflected light from the fifth total reflection surface to form a third light beam.
Preferably, the first light inlet surface is a light-condensing curved surface.
Preferably, the second light inlet surface is a light-condensing curved surface.
Preferably, the first total reflection surface is a curved surface for improving the consistency of the light beam.
Preferably, the fourth total reflection surface is a curved surface for improving the consistency of the light beam.
Preferably, the direction of maximum light intensity of the second light beam and the first light beam is parallel or intersects at an angle of less than 5 °.
Preferably, an included angle formed by the intersection of a reverse extension line of the maximum light intensity direction of the first light beam and the main optical axis is 60-80 °.
Preferably, the first side portion and the second side portion are integrally formed, and a connecting line is located at the main optical axis.
Preferably, the lens is a strip lens extending along a longitudinal axis.
A lamp comprises a lamp holder, a lens and a light source, wherein the lens adopts the lens, and the light source is arranged at the position where the light source is arranged.
Preferably, the lamp holder is a bar-shaped lamp holder extending along the longitudinal axis, the lens is a bar-shaped lens extending along the longitudinal axis, and the light source is a linear light source extending along the longitudinal axis.
Preferably, the lamp further comprises a lampshade arranged on the lamp holder and located above the lens.
Preferably, an optical film stretching the light source along the longitudinal axis is provided between the lens and the lamp housing.
The utility model has the technical effects that:
the lens and the lamp with the lens realize uniform illumination on a large range on one side, and have the advantages of small volume and high lighting effect.
Drawings
Embodiments of the utility model are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic perspective view of a lens of this embodiment.
Fig. 2 is a schematic structural diagram of the lens of the present embodiment.
Fig. 3 is a schematic diagram illustrating the optical path of the lens of the present embodiment.
Fig. 4 is a schematic view of the optical path of the lens (with the irradiation surface) of the present embodiment.
Fig. 5 is a schematic structural diagram of the lamp of the present embodiment.
Detailed Description
Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.
As shown in FIGS. 1 to 4, the lens 100 of the present embodiment includes a light source arrangement portion 103, a first side portion 101 and a second side portion 102. The lens 100 is used for distributing light to the light source 200, the light source setting part 103 refers to a position where the light source 200 is located, the light distribution type of the light source 200 is many, and the light source 200 may be three-dimensional 360-degree light emission, or single-sided three-dimensional 180-degree light emission, or other angles, and in order to achieve efficient and directional illumination, it is more advantageous to perform secondary light distribution by using single-sided three-dimensional 180-degree light emission, so the light source 200 in this embodiment is single-sided three-dimensional 180-degree light emission, and at present, the most common light source 200 is an LED chip with a circuit board, and the direction of the maximum light intensity is perpendicular to the circuit board. For convenience of description, the light source arrangement 103 is defined with a main optical axis 104 passing through the center thereof and perpendicular to each other, a longitudinal axis 105 and a transverse axis 106, and generally, the light source 200 has a maximum light intensity direction which coincides with the main optical axis 104.
The lens 100 is divided into a first side part 101 and a second side part 102, the main optical axis 104 and the transverse axis 106 are respectively located on two sides of the main optical axis 104 in the plane, the light source 200 arranged at the light source arrangement position 103 emits a first light beam 201 after light distribution is carried out by the first side part 101, and a reverse extension line of the maximum light intensity direction of the first light beam 201 is intersected with the main optical axis 104. The first side portion 101 deflects the light emitted from the light source 200 on the side thereof, the deflection direction being away from the second side portion 102. The specific shape and configuration may be configured according to the desired deflection angle and the size of the beam angle.
When efficient single-side illumination is required, the second side portion 102 deflects the light emitted from the light source 200 on the side thereof, the deflection direction is toward the first side portion 101, and the second side portion 102 includes a first light entering surface 1021, a first connecting surface 1022, a first total reflection surface 1023, a second total reflection surface 1024, a third total reflection surface 1025 and a first light emitting surface 1026. The first light entering surface 1021 receives the light beam from the light source 200, the first connecting surface 1022 is connected with the outer end of the first light entering surface 1021, the first connecting surface 1022 is used for transition and connection, does not participate in the main light distribution work, and the shape of the first connecting surface is related to the shape of other light distribution surfaces; the first total reflection surface 1023 is obliquely arranged outwards relative to the main optical axis 104 and is used for totally reflecting the incident light from the first light incoming surface 1021 outwards, the uniformity of the light beam from the light source 200 is not good, and the first total reflection surface 1023 is a curved surface for improving the uniformity of the light beam; the second total reflection surface 1024 is disposed obliquely outward relative to the main optical axis 104, and one end of the second total reflection surface is connected to the free end of the first connection surface 1022 for receiving and totally reflecting the reflected light from the first total reflection surface 1023; the third total reflection surface 1025 is arranged in an inward inclined manner relative to the main optical axis 104, and one end of the third total reflection surface 1025 is connected with the free end of the second total reflection surface 1024 and is used for totally reflecting the reflected light from the second total reflection surface 1024; through the three total reflection surfaces, part of the light beams of the light source 200 at the side of the second side portion 102 is deflected and finally exits through the first light emitting surface 1026, the first light emitting surface 1026 is connected to the free ends of the second total reflection surface 1024 and the third total reflection surface 1025, and the maximum light intensity direction of the second light beam 202 exiting from the first light emitting surface 1026 intersects with the main optical axis 104.
The light inlet surface and the light outlet surface of the first side portion 101 are both condensing curved surfaces, so that the deflection of the light beam can be realized, but the light beam is not uniform, the deflection angle cannot be large, and the large-range illumination is difficult to realize. In this embodiment, the first side portion 101 includes a second light incident surface 1011, a second connecting surface 1012, a fourth total reflection surface 1013, a second light emitting surface 1014, a fifth total reflection surface 1015, and a third light emitting surface 1016. The second connection surface 1012 is connected to the outer end of the second light entering surface 1011, and similarly, the second connection surface 1012 is used for excessive connection and connection, does not participate in main light distribution operation, and has a shape related to the shape of other light distribution surfaces; the fourth total reflection surface 1013 is obliquely arranged outward relative to the main optical axis 104, and is configured to totally reflect to the outside the incident light from the second light entering surface 1011 near the main optical axis 104, and in order to make the emergent light more uniform, the incident light is more uniform on the irradiation surface, and the fourth total reflection surface 1013 is a curved surface that improves the uniformity of the light beam; the second light emitting surface 1014 is used for emitting the reflected light from the fourth total reflection surface 1013 to form the first light beam 201; the fifth total reflection surface 1015 is disposed obliquely outward relative to the main optical axis 104, and one end of the fifth total reflection surface 1015 is connected to the free end of the second connection surface 1012, so as to totally reflect the incident light from the portion of the second light entering surface 1011 away from the main optical axis 104 and generate the reflected light close to the main optical axis 104; the third light emitting surface 1016 is located above the fifth total reflection surface 1015, and is configured to emit the reflected light from the fifth total reflection surface 1015 to form the third light beam 203. The first side portion 101 deflects the incident light near the main optical axis 104 outward to obtain a first light beam 201, which is used for large-area illumination, and large-angle deflection can be achieved through total reflection, and in addition, in order to compensate for the illumination of the lens 100 in the direction of the main optical axis 104, in this embodiment, the incident light from the part of the second light entering surface 1011 away from the main optical axis 104 is totally reflected by the fifth total reflection surface 1015.
In order to improve the light efficiency, in this embodiment, the first light entering surface 1021 is a light condensing curved surface, a portion of the second light entering surface 1011 near the main optical axis 104 is a light condensing curved surface, a portion far away from the main optical axis 104 is a sidewall behind the counter bore 107, and the arrangement of the counter bore 107 can improve the light efficiency, which is not described in detail for conventional arrangements.
In order to improve the light efficiency, in this embodiment, the maximum light intensity directions of the second light beam 202 and the first light beam 201 are parallel or intersect at an angle smaller than 5 °.
The included angle formed by the intersection of the reverse extension line of the maximum light intensity direction of the first light beam 201 and the main light axis 104 is 60-80 degrees.
For convenience of manufacturing and calculation of light distribution, in the present embodiment, the first side portion 101 and the second side portion 102 are integrally formed, and a connecting line is located at the main optical axis 104.
With the lens 100 of this embodiment, a wide range of uniform illumination can be obtained on one side of the illumination surface 600.
The utility model is mainly used for the light distribution of a linear light source, and the lens 100 is a strip-shaped lens extending along a longitudinal axis 105.
As shown in fig. 5, the lamp of the present embodiment includes a lamp holder 300, a lens 100 and a light source 200, wherein the light source 200 is disposed on the light source disposing part 103. The lamp holder 300 is a strip lamp holder extending along the longitudinal axis 105, the lens 100 is a strip lens extending along the longitudinal axis 105, and the light source 200 is a linear light source extending along the longitudinal axis 105. The lamp further includes a lamp housing 400 disposed on the lamp holder 300 above the lens 100. An optical film 500 is disposed between the lens 100 and the lamp housing 400 that stretches the light source 200 along the longitudinal axis 105. The light source 200 comprises a strip-shaped circuit board 204 extending along the longitudinal axis 105 and a plurality of LED chips 205 arranged on the strip-shaped circuit board 204.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.
Claims (14)
1. A lens (100) comprising:
a light source arrangement (103) with a main optical axis (104), a longitudinal axis (105) and a transverse axis (106) passing through the center thereof and being perpendicular to each other;
the light source (200) arranged at the light source arrangement position (103) emits a first light beam (201) after light distribution of the first side part (101), and a reverse extension line of the maximum light intensity direction of the first light beam (201) is intersected with the main optical axis (104);
characterized in that said second side portion (102) comprises:
a first light inlet surface (1021);
a first connecting surface (1022) connected to an outer end of the first light inlet surface (1021);
a first total reflection surface (1023) which is obliquely arranged outwards relative to the main optical axis (104) and is used for totally reflecting the incident light from the first light inlet surface (1021) to the outside;
a second total reflection surface (1024) inclined outward with respect to the main optical axis (104), one end of the second total reflection surface being connected to the free end of the first connection surface (1022), for receiving and totally reflecting the reflected light from the first total reflection surface (1023);
a third total reflection surface (1025) which is arranged in an inward inclined manner relative to the main optical axis (104), and one end of the third total reflection surface is connected with the free end of the second total reflection surface (1024) and is used for totally reflecting the reflected light from the second total reflection surface (1024);
and the first light emitting surface (1026) is connected with the free ends of the second total reflection surface (1024) and the third total reflection surface (1025) and emits reflected light from the third total reflection surface (1025), and the maximum light intensity direction of the second light beam (202) emitted from the first light emitting surface (1026) is intersected with the main optical axis (104).
2. Lens (100) according to claim 1, characterized in that said first side (101) comprises: a second light entrance surface (1011);
a second connection surface (1012) connected to an outer end of the second light entrance surface (1011);
a fourth total reflection surface (1013) which is obliquely arranged outward with respect to the main optical axis (104) and totally reflects to the outside the incident light from the portion of the second light entrance surface (1011) near the main optical axis (104);
a second light emitting surface (1014) for emitting the reflected light from the fourth total reflection surface (1013) to form a first light beam (201);
a fifth total reflection surface (1015) which is arranged obliquely outward relative to the main optical axis (104), has one end connected to the free end of the second connection surface (1012), totally reflects the incident light from the part of the second light inlet surface (1011) far away from the main optical axis (104), and generates the reflected light close to the main optical axis (104);
and the third light emitting surface (1016) is positioned above the fifth total reflection surface (1015) and is used for emitting the reflected light from the fifth total reflection surface (1015) to form a third light beam (203).
3. The lens (100) of claim 1, wherein the first light inlet surface (1021) is a converging curved surface.
4. The lens (100) of claim 2, wherein a portion of the second light entering surface (1011) near the primary optical axis (104) is a light-gathering curved surface.
5. The lens (100) of claim 1, wherein the first fully reflective surface (1023) is a curved surface to improve beam uniformity.
6. The lens (100) of claim 2, wherein the fourth total reflection surface (1013) is a curved surface that improves beam uniformity.
7. A lens (100) according to any of claims 1 to 6, wherein the direction of maximum intensity of the second light beam (202) and the first light beam (201) is parallel or intersects less than 5 °.
8. The lens (100) of any of claims 1 to 6, wherein the intersection of the main optical axis (104) and a reverse extension of the direction of maximum intensity of the first light beam (201) forms an angle of 60 ° to 80 °.
9. The lens (100) of any of claims 1 to 6, wherein the first side portion (101) and the second side portion (102) are integrally formed, a connecting line being located at the main optical axis (104).
10. The lens (100) of any of claims 1 to 6, wherein the lens (100) is a strip lens extending along the longitudinal axis (105).
11. A luminaire comprising a lamp holder (300), a lens (100) and a light source (200), wherein the lens (100) is the lens (100) according to any one of claims 1 to 10, and the light source (200) is disposed on the light source disposition part (103).
12. A light fixture as claimed in claim 11, characterized in that the light fixture (300) is a strip light fixture extending along a longitudinal axis (105), the lens (100) is a strip lens extending along the longitudinal axis (105), and the light source (200) is a linear light source extending along the longitudinal axis (105).
13. A light fixture as claimed in claim 11, characterized in that the light fixture further comprises a lamp housing (400) arranged on the lamp holder (300) above the lens (100).
14. A luminaire as claimed in claim 11, characterized in that an optical film (500) stretching the light source (200) along the longitudinal axis (105) is arranged between the lens (100) and the lamp housing (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003400.8U CN215636690U (en) | 2020-12-11 | 2020-12-11 | Lens and lamp with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003400.8U CN215636690U (en) | 2020-12-11 | 2020-12-11 | Lens and lamp with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215636690U true CN215636690U (en) | 2022-01-25 |
Family
ID=79887816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023003400.8U Active CN215636690U (en) | 2020-12-11 | 2020-12-11 | Lens and lamp with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215636690U (en) |
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2020
- 2020-12-11 CN CN202023003400.8U patent/CN215636690U/en active Active
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