CN216047441U

CN216047441U - Condensing lens capable of effectively improving light inlet efficiency and LED light-emitting component

Info

Publication number: CN216047441U
Application number: CN202122743540.7U
Authority: CN
Inventors: 罗阳
Original assignee: Chongqing Rebo Lighting & Electronics Co ltd
Current assignee: Chongqing Rebo Lighting & Electronics Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-15
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a condensing lens capable of effectively improving light inlet efficiency and an LED light-emitting component, wherein the condensing lens comprises a condensing lens body, one end face of the condensing lens body is an emergent face, one end face of the condensing lens body, far away from the emergent face, is provided with a first incident face, a semi-surrounding light-gathering structure and a yielding vacancy structure, the semi-surrounding light-gathering structure surrounds the first incident face in the circumferential direction, one side surface of the semi-surrounding light-gathering structure, close to the central axis of the condensing lens body, is a second incident face, and the second incident face and the first incident face surround to form a light inlet vacancy groove. Technical scheme more than adopting, have two kinds of traditional condensing lens's advantage concurrently, not only can avoid taking place to interfere with PCBA through the design that advances the light and lack the groove cooperation and let a vacancy structure, reduce the condensing lens that the slope set up and PCBA's distance to promote optical efficiency, need not to ensure the light efficiency through increase LED banks power moreover, the diversion has reduced product cost.

Description

Condensing lens capable of effectively improving light inlet efficiency and LED light-emitting component

Technical Field

The utility model relates to the technical field of optical elements, in particular to a condensing lens capable of effectively improving light inlet efficiency and an LED light-emitting component.

Background

The condensing lens is a TIR lens for short, collects and processes light by adopting a total reflection principle, and is often matched with an LED lamp bead to be used in the field of automotive interior lamps.

Due to the compact installation space and the specific lighting requirements in the interior of a motor vehicle, it is often necessary to use the condenser lens obliquely. Two traditional condenser lenses are provided, one please refer to fig. 3, a light inlet channel 16 is arranged at one end of the condenser lens close to the PCBA2, the inner end of the light inlet channel 16 is a first incident surface 12, and the circumferential side wall of the light inlet channel 16 is a second incident surface 132, because the condenser lens is used in an inclined manner, in order to avoid the condenser lens from being interfered with the PCBA2, the distance between the condenser lens and the PCBA2 needs to be increased, so that the LED lamp bead cannot extend into the light inlet channel 16, the space occupation of an optical system is increased, the light entering the condenser lens is reduced, and the light efficiency utilization rate is reduced. Referring to fig. 4, the end of the condensing lens close to the PCBA2 only has the first incident surface 12 which is an aspheric surface or a free-form surface, and although the first incident surface does not interfere with the PCBA2, a large amount of light emitted by the LED lamp beads does not enter the condensing lens due to the absence of the light inlet channel 16, so that the optical efficiency is reduced more seriously, and the light can only be compensated by increasing the power of the LED lamp beads, and the direction change increases the product cost.

It is urgent to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a condensing lens and an LED light-emitting component which can effectively improve the light inlet efficiency.

The technical scheme is as follows:

the utility model provides a can effectively promote collector lens of light efficiency, includes the collector lens body, the one end terminal surface of this collector lens body is the exit surface, and its main points lie in: the end face of one end of the condensing lens body, which is far away from the emergent face, is provided with a first incident face, a semi-surrounding condensing structure and a yielding vacancy structure, the semi-surrounding condensing structure surrounds the first incident face in the circumferential direction, the surface of one side, which is far away from the central axis of the condensing lens body, of the semi-surrounding condensing structure is a reflecting face, the surface of one side, which is close to the central axis of the condensing lens body, of the semi-surrounding condensing structure is a second incident face, one end, which is close to the emergent face, of the second incident face is connected with the circumferential outer edge of the first incident face, and a light inlet vacancy groove is formed in a surrounding manner;

the light rays incident from the first incident surface are refracted by the first incident surface, enter the condenser lens body and are refracted by the emergent surface and then are emergent from the emergent surface;

the light rays incident from the second incident surface are refracted by the second incident surface, enter the condenser lens body, are reflected to the emergent surface by the reflecting surface, are refracted by the emergent surface and then are emergent from the emergent surface.

Preferably, the method comprises the following steps: the first incidence surface is an aspheric surface or a free-form surface.

Preferably, the method comprises the following steps: the second incidence surface is a cylindrical surface or a conical surface with a part of opening.

Preferably, the method comprises the following steps: the reflecting surface is an aspheric surface or a free-form surface.

Preferably, the method comprises the following steps: the condensing lens body is integrally formed by adopting a light-transmitting material, so that the light distribution quality can be ensured, and the structural strength is high.

The utility model provides a LED light-emitting component which the main points lie in: including the PCBA that integrates the LED banks and foretell condenser lens that can effectively promote into light efficiency, the light emitting area of LED banks is towards first incident plane, and first incident plane is towards the one side slope that is close to the vacancy structure of stepping down to make LED banks at least part be arranged in advance the light and lack the groove, and all leave the clearance between first incident plane and the second incident plane.

Preferably, the method comprises the following steps: the LED lamp bank is provided with at least one LED lamp bead and can be flexibly configured according to requirements.

Compared with the prior art, the utility model has the beneficial effects that:

the condensing lens and the LED light-emitting component that can effectively promote into light efficiency who adopts above technical scheme have two kinds of traditional condensing lens's advantage concurrently, not only can avoid interfering with PCBA or other electronic components on the PCBA through the design of advancing the light and lack the slot cooperation and stepping down the vacancy structure, reduce the condensing lens that the slope set up and PCBA's distance to promote optical efficiency, need not to ensure the light efficiency through increase LED banks power moreover, the diversion has reduced product cost.

Drawings

FIG. 1 is a schematic view of a condenser lens according to the present invention;

FIG. 2 is a schematic view of the fitting relationship between the condensing lens and the PCBA according to the present invention;

FIG. 3 is a schematic diagram of a prior art combination of a condenser lens and a PCBA;

fig. 4 is a schematic diagram illustrating a fitting relationship between a condenser lens and a PCBA in the prior art.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1 and fig. 2, a condensing lens capable of effectively improving light inlet efficiency mainly includes a condensing lens body 1, the condensing lens body 1 is generally of a columnar structure, and the condensing lens body 1 is made of a transparent material, generally, the material of the condensing lens body 1 is transparent PC, transparent PMMA, Corning glass or SCHOTT glass, so that light distribution quality can be ensured, aberration is not easy to occur, and the structural strength is high.

The end face of one end of the condensing lens body 1 is an exit face 11, the exit face 11 is an optical face in any form such as a spherical face, a plane, an aspheric face or a free-form surface, and light rays exit from the exit face 11, and the exit face 11 can collimate the exiting light rays and can deflect, diffuse and collect the exiting light rays.

The end face of the condensing lens body 1, which is far away from the exit face 11, has a first incident face 12, and a semi-surrounding condensing structure 13 and a receding vacancy structure 14 which circumferentially surround the first incident face 12, that is, the semi-surrounding condensing structure 13 and the receding vacancy structure 14 together form a ring surrounding the first incident face 12. The first incident surface 12 is an aspheric surface or a free-form surface, the second incident surface 132 is a cylindrical surface or a conical surface with a partial opening, the cylindrical surface or the conical surface is semi-enclosed around the first incident surface 12, and if the second incident surface 132 is a conical surface, the conical angle of the conical surface is 0-15 degrees. The reflecting surface 131 is an aspheric surface or a free-form surface, and all the light rays incident from the second incident surface 132 can be reflected by the reflecting surface 131 to the exit surface 11 or the sidewall of the condenser lens body 1, and exit from the exit surface 11 to the outside.

The surface of one side of the semi-surrounding light-gathering structure 13, which is far away from the central axis of the light-gathering lens body 1, is a reflection surface 131, the surface of one side of the semi-surrounding light-gathering structure 13, which is near to the central axis of the light-gathering lens body 1, is a second incidence surface 132, and one end of the second incidence surface 132, which is near to the exit surface 11, is connected to the circumferential outer edge of the first incidence surface 12, and surrounds the light-entering notch 15.

Therefore, the light incident from the first incident surface 12 is refracted by the first incident surface 12, enters the condenser lens body 1, is refracted by the exit surface 11, and exits from the exit surface 11; the light incident from the second incident surface 132 is refracted by the second incident surface 132 and enters the interior of the condenser lens body 1, and is reflected to the exit surface 11 or the sidewall of the condenser lens body 1 by the reflection surface 131, and is refracted by the exit surface 11 and then exits from the exit surface 11.

Referring to fig. 2, an LED light emitting assembly includes a PCBA2 integrated with an LED lamp set 21 and the above-mentioned condensing lens capable of effectively improving light entrance efficiency, a light emitting surface of the LED lamp set 21 faces a first incident surface 12, and the first incident surface 12 is inclined toward a side close to a relief structure 14, so that at least a portion of the LED lamp set 21 is located in a light entrance slot 15, and a gap is left between the LED lamp set 21 and the first incident surface 12 and the second incident surface 132, and usually, a portion of the LED lamp set 21 is located in the light entrance slot 15 and a portion of the LED lamp set is located at the position of the relief structure 14. In this embodiment, the LED lamp set 21 has at least one LED lamp bead.

Through such design, the emergent light of LED banks 21 can penetrate into first incident plane 12 and second incident plane 132 completely, consequently, LED banks 21 can adopt the LED lamp pearl of less power, and power is less than 3W's LED lamp pearl promptly, has guaranteed optical effect, has reduced product cost. Moreover, the design of the light inlet notch 15 matched with the abdicating notch structure 14 can avoid the interference of the condensing lens body 1 with other electronic components on the LED lamp group 21 or the PCBA2, and the distance between the obliquely arranged condensing lens and the PCBA2 is reduced, so that the optical efficiency is improved.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a can effectively promote collector lens who advances light efficiency, includes collector lens body (1), and the one end terminal surface of this collector lens body (1) is emitting surface (11), its characterized in that: the end face of one end, far away from the emergent face (11), of the condensing lens body (1) is provided with a first incident face (12), a semi-surrounding condensing structure (13) and a yielding vacancy structure (14), wherein the semi-surrounding condensing structure surrounds the first incident face (12) in the circumferential direction, one side surface, far away from the central axis of the condensing lens body (1), of the semi-surrounding condensing structure (13) is a reflecting face (131), one side surface, close to the central axis of the condensing lens body (1), of the semi-surrounding condensing structure (13) is a second incident face (132), one end, close to the emergent face (11), of the second incident face (132) is connected with the circumferential outer edge of the first incident face (12), and a light entering vacancy groove (15) is formed in a surrounding manner;

the light rays incident from the first incident surface (12) are refracted by the first incident surface (12) to enter the condenser lens body (1), and then are refracted by the emergent surface (11) and then are emergent from the emergent surface (11);

the light incident from the second incident surface (132) is refracted by the second incident surface (132) and enters the interior of the condenser lens body (1), is reflected to the exit surface (11) by the reflection surface (131), is refracted by the exit surface (11), and then exits from the exit surface (11).

2. A condenser lens capable of effectively improving light entrance efficiency according to claim 1, wherein: the first incidence surface (12) is an aspheric surface or a free-form surface.

3. A condenser lens capable of effectively improving light entrance efficiency according to claim 1, wherein: the second incidence surface (132) is a cylindrical surface or a conical surface with a part of opening.

4. A condenser lens capable of effectively improving light entrance efficiency according to claim 1, wherein: the reflecting surface (131) is an aspheric surface or a free-form surface.

5. A condenser lens capable of effectively improving light entrance efficiency according to claim 1, wherein: the condensing lens body (1) is integrally formed by adopting a light-transmitting material.

6. An LED light emitting assembly, comprising: the condenser lens capable of effectively improving the light inlet efficiency comprises a PCBA (2) integrated with an LED lamp group (21) and the condenser lens capable of effectively improving the light inlet efficiency according to any one of claims 1 to 5, wherein the light emitting surface of the LED lamp group (21) faces to a first incidence surface (12), and the first incidence surface (12) is inclined towards one side close to a yielding vacancy structure (14), so that the LED lamp group (21) is at least partially located in a light inlet vacancy groove (15), and a gap is reserved between the LED lamp group and the first incidence surface (12) and a gap are reserved between the LED lamp group and a second incidence surface (132).

7. The LED lighting assembly of claim 6, wherein: the LED lamp group (21) is provided with at least one LED lamp bead.