CN213299988U - Light mixing lens with absorption cover - Google Patents

Abstract

The utility model discloses a mixed light lens of area absorption cover, concretely relates to mixed light lens technical field to the utilization efficiency who solves lamps and lanterns light is low, and facula mixed light effect is poor in addition, appears the problem of dark spot, including the lens cup, is located the light-emitting plane of lens cup front end is located go into perforation and connection at lens cup rear end face center the light-emitting plane with go into the reflection side of perforation, go into the perforation be to the columnar structure that the light-emitting plane extends, the preceding terminal surface of going into the perforation is central transmission face, the downthehole level of incidence is provided with two at least light sources, the preceding tip of lens cup is provided with the absorption cover of type. The light around the length direction of a plurality of light sources is increased through the refraction treatment of the central transmission surface to the light and the reflection and refraction treatment of the reflection side surface and the incidence hole side surface to the light, more light is emitted on the basis of improving a plurality of dark spots and enabling light mixing light spots to be excessively natural and uniform, and therefore the light utilization efficiency is improved.

Description

Light mixing lens with absorption cover

Technical Field

The utility model provides a mixed light lens of cover is absorbed in area, the utility model belongs to the technical field of optical lens, concretely relates to mixed light lens technical field.

Background

At present, LED light sources have been widely used worldwide, and thus replace traditional lighting sources. This is because LED light sources have incomparable advantages over conventional light sources, such as ultra-long lifetime, power saving, green, and so on. However, to be able to effectively utilize such light sources, optics like lenses or reflectors are a necessity for modern lighting.

The mixed light is a light source with two or more different color temperatures.

Application number CN201721773246.8 discloses a lamp module for modularized LED tunnel lighting and a lamp for tunnel lighting composed of the lamp module, the lamp module includes a light source component and a radiator, the light source component is provided with a residual light absorbing cover. The tunnel lighting lamp adopts a unique integrated heat dissipation structure and a graphene heat dissipation technology to comprehensively improve the heat dissipation capacity of the system, solves the problems of poor heat dissipation, low lighting effect and short service life, and further improves the energy saving rate by 20%; the modular splicing type design can be combined at will according to the power requirement, and the on-site quick installation and maintenance can be realized, so that the maintenance cost is reduced, and the convenience is brought to the emergency maintenance of a tunnel section in a remote or severe environment; the light inlet surface of the lens adopts a corrugated design, and the edge of the lens is additionally provided with a residual light absorption shielding cover, so that the glare problem of the tunnel section is solved.

Above-mentioned patent increases the afterglow at the lens edge and absorbs the screening cover, solves the glare problem of tunnel section, but the utilization efficiency of lamps and lanterns light can greatly reduced, and the facula mixes the light effect poorly when mixing light in addition, appears the dark spot.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a take mixed light lens of cage to solve above-mentioned lens edge and increase the surplus light and absorb the utilization efficiency that the shield cover leads to lamps and lanterns light and can greatly reduced, facula mixed light effect is poor in addition, the problem of dark spot appears.

The utility model adopts the technical scheme as follows:

the light mixing lens with the absorption cover comprises a lens cup body, a light outlet plane, an entrance perforation and a reflection side face, wherein the light outlet plane is located at the front end of the lens cup body, the entrance perforation is located in the center of the rear end face of the lens cup body, the reflection side face is connected with the light outlet plane and the entrance perforation, the entrance perforation is of a columnar structure extending towards the light outlet plane, the front end face of the entrance perforation is a central transmission face, at least two light sources are horizontally arranged in the entrance perforation, and the front end portion of the lens cup body is provided with the absorption cover in a convex shape.

In the technical scheme of the application: light emitted from the plurality of light sources of the lens is refracted through the central transmission surface and the side surface of the incident hole, the light is refracted through the central transmission surface and directly goes out of the light-emitting plane, and the light from the side surface of the incident hole passes through the reflection side surface and then is emitted out of the light-emitting plane. The absorbing cover can block out large-angle light and prevent glare, refraction treatment is conducted on light through the central transmission surface, reflection and refraction treatment is conducted on light through the reflection side surface and the incident hole side surface, light around the length direction of the light sources is increased, more light is emitted on the basis that multiple dark spots are improved and light mixing light spots are excessively natural and uniform, and therefore light utilization efficiency is improved.

Furthermore, a circle of boss is arranged at the front end part of the lens cup body, and a groove matched with the boss is arranged on the absorption cover. The boss and the groove are matched to limit the lens cup body, so that the lens cup body is stably and firmly fixed in the absorption cover.

Further, the reflecting side surface is a free-form surface. The free-form surface is a complex, irregular and non-rotary curved surface, so that the free-form surface has larger degree of freedom, can realize more excellent optical performance, improves the effective utilization rate of light energy, and ensures that the light rays in an irradiation area are more uniform.

Further, the central transmission surface is a cambered surface protruding outwards towards the rear end of the lens cup body. The central transmission surface adopts a cambered surface to condense light and obtain a proper optical angle and light spots.

Further, the inner diameter of the entrance hole gradually becomes smaller along the direction close to the light exit plane. The mold is convenient to be demoulded.

Furthermore, the light-emitting plane is a funnel-shaped free-form surface. The light-emitting plane is a free-form surface, can be adjusted to be matched with the central transmission surface and the reflection side surface, has a proper light refraction angle, enables more light to be refracted out, and can not be shielded by the absorption cover, so that the efficiency of the whole lens is improved, and the weight of the lens can be lightened.

Further, the shape of the lens cup is oval or circular.

Furthermore, the lens cup body is made of PC or PMMA.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. in the utility model, the light is refracted by the central transmission surface, and the light is reflected and refracted by the reflection side surface and the incidence hole side surface, so that the light around the length direction of a plurality of light sources is increased, more light is emitted on the basis of improving a plurality of dark spots and enabling mixed light spots to be excessively natural and uniform, and the light utilization efficiency is improved;

2. in the utility model, through the arrangement of the reflection side surface, the light-emitting plane and the incident hole side surface, the two sides of the part of the length direction facing to the plurality of light sources are dispersed, so as to achieve the purpose of improving the light utilization efficiency;

3. in the utility model, the absorption cover can block the large-angle light and prevent glare, and the boss is matched with the groove to limit the lens cup body, so that the lens cup body is stably and firmly fixed in the absorption cover;

4. in the utility model, because of the effect of the wave-shaped curved surface on the side surface of the light-emitting plane and the incident hole, the light spots of the mixed light of various color temperatures can transit naturally and uniformly, the dark spots can be improved, and the efficiency can not be reduced too much;

5. in the utility model, the reflecting side surface is a free-form surface, and the free-form surface is a complex, irregular and non-rotary curved surface, so that the free-form surface has larger degree of freedom, can realize more excellent optical performance, improves the effective utilization rate of light energy, and ensures that the light rays in an irradiation area are more uniform;

6. the utility model discloses in, the cambered surface is adopted to the central transmission face, is for spotlight, obtains suitable optics angle and facula

7. In the utility model, the side wall of the incident hole is a curved surface formed by small cylindrical surfaces, the curvatures of the cylindrical surfaces are different, the angles of light refraction are different, the curvature of the cylindrical surface is adjusted, the light on the two rectangular sides of the two light sources is increased, and the facula is improved;

8. the light-emitting plane is a free-form surface, can be adjusted to be matched with the central transmission surface and the reflection side surface, has a proper light refraction angle, enables more light to be refracted out, and can not be shielded by the absorption cover, so that the efficiency of the whole lens is improved, and the weight of the lens can be lightened.

Drawings

Fig. 1 is a schematic structural diagram of the light mixing lens of the present invention;

fig. 2 is a cross-sectional view of the light mixing lens of the present invention;

FIG. 3 is a schematic diagram of a rear end structure of the light mixing lens of the present invention;

FIG. 4 is a schematic diagram of a front end structure of the light mixing lens of the present invention;

FIG. 5 is a diagram of the light trend of the side of the lens in the width direction of 2 light sources according to the present invention;

fig. 6 is a diagram of the light trend of the side surface of the 2 light source length direction lens of the present invention.

The labels in the figure are: 1-reflection side surface, 2-light-emitting plane, 3-wave-shaped curved surface, 4-central transmission surface, 5-light source and 6-absorption cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 to 6, the light mixing lens with the absorbing cover 6 comprises a lens cup body, a light exit plane 2 located at the front end of the lens cup body, an entrance hole located at the center of the rear end face of the lens cup body and a reflection side face 1 connecting the light exit plane 2 and the entrance hole, wherein the entrance hole is of a cylindrical structure extending towards the light exit plane 2, the front end face of the entrance hole is a central transmission plane 4, at least two light sources 5 are horizontally arranged in the entrance hole, and the front end part of the lens cup body is provided with the absorbing cover 6 in a convex shape.

In the technical scheme of the application: light emitted from the plurality of light sources 5 of the lens is refracted through the central transmission plane 4 and the entrance aperture side, exits directly from the exit plane 2 through light refraction from the central transmission plane 4, and exits through the reflection side 1 from the entrance aperture side and then exits from the exit plane 2. The absorbing cover 6 can block out large-angle light and prevent glare, refraction treatment is conducted on light rays through the central transmission surface, reflection and refraction treatment is conducted on the light rays through the reflection side surface 1 and the incident hole side surface, light on two sides of the length direction of the light sources 5 is increased, more light rays are emitted on the basis that multiple dark spots are improved and light mixing light spots are excessively natural and uniform, and therefore light utilization efficiency is improved.

Example 2

As shown in fig. 1-2, on the basis of embodiment 1, a circle of bosses are arranged at the front end of the lens cup body, and grooves matched with the bosses are arranged on the absorption cover 6. The boss and the groove are matched to limit the lens cup body, so that the lens cup body is stably and firmly fixed in the absorption cover 6.

Example 3

As shown in fig. 1 to 2, in embodiment 1, the reflective side surface 1 is a free-form surface. The free-form surface is a complex, irregular and non-rotary curved surface, so that the free-form surface has larger degree of freedom, can realize more excellent optical performance, improves the effective utilization rate of light energy, and ensures that the light rays in an irradiation area are more uniform.

Example 4

As shown in fig. 2, on the basis of embodiment 1, the central transmission surface 4 is a curved surface. The central transmission surface 4 adopts a cambered surface to condense light and obtain a proper optical angle and light spots.

Example 5

As shown in fig. 2, in example 1, the inner diameter of the entrance hole becomes gradually smaller in the direction approaching the exit plane 2. The mold is convenient to be demoulded.

Example 6

As shown in fig. 2, based on embodiment 1, the light-exiting plane 2 is a funnel-shaped free-form surface. The light-emitting plane 2 is a free-form surface, can be adjusted to be matched with the central transmission surface 4 and the reflection side surface 1, has a proper refraction angle of light, enables more light to be refracted out, and can not be shielded by the absorption cover 6, so that the efficiency of the whole lens is improved, and the weight of the lens can be lightened.

Example 7

As shown in fig. 1 to 2, the lens cup has an elliptical or circular shape in the case of embodiment 1.

Example 8

In example 1, the lens cup is made of PC or PMMA.

In the above embodiment, the number of the light sources is 2, and there may be 3, 4 or more.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a mixed light lens of area absorption cover, includes the lens cup, is located light-emitting plane (2) of lens cup front end, is located the income perforation of lens cup rear end face center and connect light-emitting plane (2) with go into reflection side (1) of perforation, go into the perforation be to the columnar structure of light-emitting plane (2) extension, its characterized in that: the side surface of the incident hole is a wave-shaped curved surface (3), the front end surface of the incident hole is a central transmission surface (4), at least two light sources (5) are horizontally arranged in the incident hole, and the front end part of the lens cup body is provided with a convex absorption cover (6).

2. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the front end part of the lens cup body is provided with a circle of boss, and the absorption cover (6) is provided with a groove matched with the boss.

3. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the reflecting side surface (1) is a free-form surface.

4. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the central transmission surface (4) is a cambered surface protruding outwards towards the rear end of the lens cup body.

5. The light mixing lens with the absorption cover as set forth in claim 1 or 4, wherein: the inner diameter of the entrance hole is gradually reduced along the direction close to the exit plane (2).

6. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the light emergent plane (2) is a funnel-shaped free-form surface.

7. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the shape of the lens cup body is oval or round.

8. The light mixing lens with the absorption cover as set forth in claim 1, wherein: the lens cup body is made of PC or PMMA.

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