CN219713149U

CN219713149U - Condensing lens group and wall washing lamp

Info

Publication number: CN219713149U
Application number: CN202321362386.1U
Authority: CN
Inventors: 董晨阳; 樊军; 仇旻
Original assignee: Zhejiang Guangcone Technology Co ltd
Current assignee: Zhejiang Guangcone Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-09-19
Anticipated expiration: 2033-05-31

Abstract

The utility model provides a spotlight lens group and wash pinup, relates to optical lens technical field, including first lens and second lens, the second lens sets up the top of first lens, first lens includes first spotlight portion and second spotlight portion, second spotlight portion sets up outside the first spotlight portion, the upper surface of first lens inwards caves in, first lens with there is first cavity between the second lens. According to the utility model, more stray light can be gathered by arranging the cavity between the first lens and the second lens, so that the light utilization rate is improved.

Description

Condensing lens group and wall washing lamp

Technical Field

The utility model relates to the technical field of optical lenses, in particular to a condensing lens group and a wall washer lamp.

Background

An LED light source is a light source which is commonly used at present, and is limited by the characteristics of the LED light source, so that the LED light source is large in radiation angle and easy to diffuse. Therefore, when an LED light source is used, it is often necessary to condense it. For example, chinese patent CN202020356947.7 discloses a condensing lens group and an LED light source comprising the condensing lens group, which includes a groove, a first lens region, a second lens region, and a light emitting surface; the first lens area is positioned in front of the groove, the second lens area is positioned on the side face of the groove, the groove is positioned at the bottom of the condensing lens group, and the light emergent surface is positioned at the top of the condensing lens group; the first lens region is a convex lens. However, when the current condensing lens condenses light, the light utilization rate is poor, stray light is difficult to collect, and the light efficiency of the lamp is poor.

Therefore, there is a need to develop a condensing lens assembly and a wall washer for solving the problems in the prior art.

Disclosure of Invention

The utility model aims to provide a condensing lens group and a wall washing lamp, which can collect part of stray light so as to solve the problem of poor light utilization rate of the existing condensing lens in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the condensing lens group comprises a first lens and a second lens, wherein the second lens is arranged above the first lens, the first lens comprises a first condensing part and a second condensing part, the second condensing part is arranged outside the first condensing part, the upper surface of the first lens is inwards concave, and a first cavity is formed between the first lens and the second lens.

Further, the upper surface of the first lens is a conical surface or a truncated cone surface.

Further, the first lens further comprises a third light condensing part, and the third light condensing part is arranged outside the second light condensing part.

Further, the upper surface of the second light condensing part is connected with the upper surface of the third light condensing part, and the upper surface of the second light condensing part and the upper surface of the third light condensing part are positioned on the same conical surface.

Further, the first light condensing portion, the second light condensing portion, and the third light condensing portion are of an integral structure.

Further, the lowest position of the third light condensing portion is lower than the lowest position of the second light condensing portion.

Further, the lens group comprises a lens group side wall, the lens group side wall is connected with the third light condensing part, and the lens group side wall is arranged outside the third light condensing part.

Further, the upper surface of the second lens is a plane, and the lower surface of the second lens is also a plane.

Further, the upper surface of the first light condensing part is a plane, and the lower surface of the first light condensing part is a convex surface.

The wall washer comprises the condensing lens group.

Compared with the prior art, the utility model has the beneficial effects that: through setting up the cavity between first lens and second lens for optics can be in the cavity multiple refraction, with gathering more stray light, promote light utilization ratio.

Other features and advantages of the present utility model will be disclosed in the following detailed description of the utility model and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the lower structure of the present utility model;

FIG. 3 is a side elevational view of the lower structure of the present utility model;

fig. 4 is a cross-sectional view of the overall structure of the present utility model.

The figure indicates: 11. a first light condensing unit; 12. a second light condensing section; 13. a third light condensing section; 2. a second lens; 3. a lens assembly sidewall.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The condensing lens group, as shown in fig. 1 to 4, comprises a first lens and a second lens 2, wherein the second lens 2 is arranged above the first lens, the upper surface of the first lens is recessed inwards, and a first cavity is arranged between the first lens and the second lens 2.

The upper surface of the first lens is a conical surface or a truncated cone surface. The first cavity is conical or truncated cone-shaped.

The first lens includes a first light condensing portion 11, a second light condensing portion 12, and a third light condensing portion 13, the second light condensing portion 12 is disposed outside the first light condensing portion 11, and the third light condensing portion 13 is disposed outside the second light condensing portion 12.

In this embodiment, the upper surface of the first light-focusing part 11 is a plane, and the lower surface of the first light-focusing part 11 is a convex surface. The third light-gathering portion 13 surrounds the second light-gathering portion 12, the height of the third light-gathering portion 13 is greater than the height of the second light-gathering portion 12, the first light-gathering portion 11 and the second light-gathering portion 12 are mainly used for gathering light on the upper portion of the LED chip, and the third light-gathering portion 13 is mainly used for gathering light on the side portion of the chip. In this embodiment, the first light-gathering portion 11, the second light-gathering portion 12, and the third light-gathering portion 13 are integrally configured, so as to facilitate light transmission and reduce manufacturing cost.

The upper surface of the second light condensing portion 12 is connected to the upper surface of the third light condensing portion 13, and the upper surface of the second light condensing portion 12 and the upper surface of the third light condensing portion 13 are located on the same conical surface. The upper surface of the second light condensing portion 12 and the upper surface of the third light condensing portion 13 are configured to refractively condense stray light.

The second light condensing part 12 is annular, and the second light condensing part 12 surrounds the first light condensing part 11 to form a second cavity; the third light condensing portion 13 is also annular, and the third light condensing portion 13 surrounds the second light condensing portion 12 to form a third cavity. The height of the third cavity is greater than that of the second cavity, the lowest position of the third light condensing part 13 is lower than that of the second light condensing part 12, the first light condensing part 11 is used for condensing light rays emitted by the upper surface of the LED chip, and the second light condensing part 12 is mainly used for condensing light rays emitted by the side part of the LED chip.

In this embodiment, the upper surface of the second lens 2 is a plane, and the lower surface of the second lens 2 is also a plane; alternatively, the second lens 2 may be a condenser lens.

In this embodiment, the optical lens assembly further includes a lens assembly sidewall 3, the lens assembly sidewall 3 is connected to the third light-gathering portion 13, and the lens assembly sidewall 3 is disposed outside the third light-gathering portion 13. The lens group side wall 3 and the first lens may be of a unitary structure or a split structure. The inside of the lens group side wall 3 may be a reflecting surface.

In this embodiment, the lower surface of the first light-condensing portion 11 is an incident surface, the inner side surface of the second light-condensing portion 12 is also an incident surface, the outer side surface of the second light-condensing portion 12 is a total reflection surface, the inner side surface of the third light-condensing portion 13 is an incident surface, and the outer side surface of the third light-condensing portion 13 is a total reflection surface.

In this embodiment, by disposing the first cavity between the first lens and the second lens 2, a part of stray light may be refracted and condensed through the upper surface of the first lens, and disposing the second lens 2 on the first lens, a part of light not perpendicularly emitted may be refracted or reflected, and condensed again.

The wall washer comprises the condensing lens group and an LED chip, wherein the LED chip is arranged in the second cavity or the third cavity of the condensing lens group.

The utility model provides a condensing lens group and a wall washing lamp, which have the advantages of simple structure, convenient use and high reliability.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The condensing lens group is characterized by comprising a first lens and a second lens, wherein the second lens is arranged above the first lens, the first lens comprises a first condensing part and a second condensing part, the second condensing part is arranged outside the first condensing part, the upper surface of the first lens is inwards concave, and a first cavity is formed between the first lens and the second lens.

2. The condensing lens group of claim 1, wherein the upper surface of the first lens is a conical surface or a truncated cone surface.

3. The condensing lens group of claim 1, wherein the first lens further comprises a third condensing portion disposed outside the second condensing portion.

4. A condensing lens group according to claim 3, characterized in that the upper surface of the second condensing part is connected with the upper surface of the third condensing part, and the upper surface of the second condensing part and the upper surface of the third condensing part are located on the same conical surface.

5. The condensing lens group according to claim 3, wherein the first condensing portion, the second condensing portion, and the third condensing portion are of a unitary structure.

6. The condensing lens group according to claim 5, wherein a lowest position of the third condensing portion is lower than a lowest position of the second condensing portion.

7. The condensing lens group of claim 5, further comprising a lens group sidewall connected to the third condensing portion, the lens group sidewall being disposed outside the third condensing portion.

8. The collection lens assembly of any one of claims 1-7, wherein the upper surface of the second lens is planar and the lower surface of the second lens is also planar.

9. The condensing lens group of claim 8, wherein an upper surface of the first condensing portion is a plane and a lower surface of the first condensing portion is a convex surface.

10. Wall washer lamp, characterized by comprising a condenser lens group according to any one of claims 1-9.