CN211780865U - Optical lens system of COB light source - Google Patents
Optical lens system of COB light source Download PDFInfo
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- CN211780865U CN211780865U CN201922498931.XU CN201922498931U CN211780865U CN 211780865 U CN211780865 U CN 211780865U CN 201922498931 U CN201922498931 U CN 201922498931U CN 211780865 U CN211780865 U CN 211780865U
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Abstract
The utility model discloses an optical lens system of COB light source includes from the object side in proper order: the imaging lens comprises a first aspheric lens, a second aspheric lens, a spherical lens, an imaging light through hole and an imaging lens; the object side surface of the first aspheric lens is a plane, and the image side surface of the first aspheric lens is a convex surface; the object side surface of the second aspheric lens is a plane, and the image side surface of the second aspheric lens is a convex surface; the object side surface of the spherical lens is a convex surface, and the image side surface is a plane; the imaging light-passing hole is arranged between the spherical lens and the imaging lens. The utility model provides a pair of optical lens system of COB light source has set gradually first aspheric lens, second aspheric lens and spherical lens through following the object side, carries out polymerization through first aspheric lens, second aspheric lens and spherical lens to the light of kicking into and mixes, can effectively improve the polymerization efficiency of light source to can lead to the unthreaded hole of formation of image and go out to form even facula, can be applied to the formation of image lamp.
Description
Technical Field
The utility model relates to a LED light source technical field especially relates to an optical lens system of COB light source.
Background
The LED has two packaging forms of discrete and integrated. The discrete LED device belongs to the traditional package, is widely applied to various related fields, and has formed a series of mainstream product forms after more than forty years of development. Compared with a discrete LED device, the COB light source module can save the primary packaging cost, the manufacturing cost of the light engine module and the secondary light distribution cost of the LED in application.
The COB light source lens system generally adopts a TIR lens or a reflector, and has low light condensation efficiency for the COB light source with a large light emitting surface, so that light spots on the light emitting surface are not uniform.
Disclosure of Invention
The utility model aims at providing an optical lens system of COB light source can effectively solve the inhomogeneous problem of play plain noodles facula.
In order to achieve the above object, an embodiment of the present invention provides an optical lens system of a COB light source, which includes in order from an object side: the imaging lens comprises a first aspheric lens, a second aspheric lens, a spherical lens, an imaging light through hole and an imaging lens;
the object side surface of the first aspheric lens is a plane, and the image side surface of the first aspheric lens is a convex surface;
the object side surface of the second aspheric lens is a plane, and the image side surface of the second aspheric lens is a convex surface;
the object side surface of the spherical lens is a convex surface, and the image side surface of the spherical lens is a plane;
the imaging light through hole is arranged between the spherical lens and the imaging lens.
Further, the distance between the plane of the first aspheric lens and the light-emitting surface is 3-5 mm.
Furthermore, the convex surface of the first aspheric lens is a paraboloid, the curvature radius is 20-25mm, and the diameter is 60-65 mm.
Further, the distance between the plane of the second aspheric lens and the convex vertex of the first aspheric lens is 0.5-1 mm.
Furthermore, the convex surface of the second aspheric lens is a paraboloid, the curvature radius is 35-40mm, and the diameter is 85-95 mm.
Furthermore, the convex surface of the spherical lens is a paraboloid, the curvature radius is 85-90mm, and the diameter is 85-95 mm.
The utility model provides a pair of optical lens system of COB light source has set gradually first aspheric lens, second aspheric lens and spherical lens through following the object side, carries out polymerization through first aspheric lens, second aspheric lens and spherical lens to the light of kicking into and mixes, can effectively improve the polymerization efficiency of light source to can lead to the unthreaded hole in formation of image and go out to form even facula, can be applied to the formation of image lamp
Drawings
Fig. 1 is a schematic structural diagram of an optical lens system of a COB light source in an embodiment of the present invention.
Wherein the drawings in the attached drawings of the specification are marked as follows:
1. a first aspherical lens; 2. a second aspherical lens; 3. a spherical lens; 4. imaging light-transmitting holes; 5. an imaging lens; 6. a light emitting face.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an optical lens system of a COB light source according to an embodiment of the present invention includes, in order from an object side: the imaging lens comprises a first aspheric lens 1, a second aspheric lens 2, a spherical lens, an imaging light through hole 4 and an imaging lens 5;
the object side surface of the first aspheric lens 1 is a plane, and the image side surface is a convex surface;
the object side surface of the second aspheric lens 2 is a plane, and the image side surface is a convex surface;
the object side surface of the spherical lens 3 is a convex surface, and the image side surface is a plane;
the imaging clear aperture 4 is disposed between the spherical lens 3 and the imaging lens 5.
In the embodiment of the invention, the light source power of the light-emitting surface is more than 200W, and the diameter of the light-emitting surface is 20-25 mm. Light that the light emitting area sent the COB light source loops through first aspheric lens 1, second aspheric lens 2 and spherical lens 3 and carries out the spotlight and mix to form even facula behind spherical lens 3's plane, imaging light through hole 4 sets up between spherical lens 3 and imaging lens 5, and imaging lens 5 leads to the formation of image through hole 4 with even facula and to far away, can be applied to the formation of image lamp.
It is understood that the convex lens includes a biconvex lens, a plano-convex lens and a meniscus lens, and the convex lens can converge light. The first aspherical lens 1, the second aspherical lens 2, and the spherical lens 3 in the embodiment of the present invention are each a plano-convex lens. According to the embodiment of the invention, the light-emitting surface, the first aspheric lens 1, the second aspheric lens 2, the spherical lens 3 and the imaging light-passing hole 4 are sequentially arranged from the object side, and after light rays of the light-emitting surface pass through the first aspheric lens 1, the second aspheric lens 2, the spherical lens 3 and the imaging light-passing hole 4, the light-gathering efficiency of the light rays can be effectively improved, uniform light spots are obtained, and the imaging light-passing device can be applied to an imaging lamp.
As a specific implementation mode of the embodiment of the invention, the distance between the plane of the first aspheric lens 1 and the light-emitting surface is 3-5 mm.
As a specific implementation manner of the embodiment of the invention, the convex surface of the first aspheric lens 1 is a paraboloid, the curvature radius is 20-25mm, and the diameter is 60-65 mm.
As a specific implementation mode of the embodiment of the invention, the distance between the plane of the second aspheric lens 2 and the convex vertex of the first aspheric lens 1 is 0.5-1 mm.
As a specific implementation manner of the embodiment of the invention, the convex surface of the second aspheric lens 2 is a paraboloid, the curvature radius is 35-40mm, and the diameter is 85-95 mm.
As a specific implementation manner of the embodiment of the invention, the convex surface of the spherical lens 3 is a paraboloid, the curvature radius is 85-90mm, and the diameter is 85-95 mm.
In the embodiment of the invention, the imaging light through hole 4 is arranged between the spherical lens 3 and the imaging lens 5, the imaging lens 5 can image a uniform light spot to a far distance through the imaging light through hole 4, and the imaging light through hole 4 can be applied to an imaging lamp to implement the embodiment of the invention, and has the following beneficial effects:
according to the embodiment of the invention, the light-emitting surface, the first aspheric lens 1, the second aspheric lens 2, the spherical lens 3 and the imaging light-passing hole 4 are sequentially arranged from the object side, and after light rays of the light-emitting surface pass through the first aspheric lens 1, the second aspheric lens 2 and the spherical lens 3, the light-condensing efficiency of the light rays can be effectively improved, so that uniform light spots can be obtained through the imaging light-passing hole 4. The embodiment of the invention has simple structure, and can effectively improve the light condensation efficiency, thereby obtaining uniform light spots for being applied to the imaging lamp.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (6)
1. An optical lens system of a COB light source, characterized by comprising in order from an object side: the imaging lens comprises a first aspheric lens, a second aspheric lens, a spherical lens, an imaging light through hole and an imaging lens;
the object side surface of the first aspheric lens is a plane, and the image side surface of the first aspheric lens is a convex surface;
the object side surface of the second aspheric lens is a plane, and the image side surface of the second aspheric lens is a convex surface;
the object side surface of the spherical lens is a convex surface, and the image side surface of the spherical lens is a plane;
the imaging light through hole is arranged between the spherical lens and the imaging lens.
2. The optical lens system for a COB light source of claim 1, wherein the first aspheric lens has a plane that is 3-5mm from the light emitting surface.
3. The optical lens system for a COB light source of claim 1, wherein the first aspheric lens has a convex surface that is parabolic, a radius of curvature of 20-25mm, and a diameter of 60-65 mm.
4. The optical lens system for a COB light source of claim 1, wherein the plane of the second aspheric lens is 0.5-1mm from the convex vertex of the first aspheric lens.
5. The optical lens system for a COB light source of claim 1, wherein the second aspheric lens has a convex surface that is parabolic, a radius of curvature of 35-40mm, and a diameter of 85-95 mm.
6. The optical lens system for a COB light source of claim 1, wherein the spherical lens has a convex surface that is parabolic, a radius of curvature of 85-90mm, and a diameter of 85-95 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498931.XU CN211780865U (en) | 2019-12-31 | 2019-12-31 | Optical lens system of COB light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498931.XU CN211780865U (en) | 2019-12-31 | 2019-12-31 | Optical lens system of COB light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211780865U true CN211780865U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922498931.XU Active CN211780865U (en) | 2019-12-31 | 2019-12-31 | Optical lens system of COB light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211780865U (en) |
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2019
- 2019-12-31 CN CN201922498931.XU patent/CN211780865U/en active Active
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