CN211625140U

CN211625140U - Lens and lamp

Info

Publication number: CN211625140U
Application number: CN202020370347.6U
Authority: CN
Inventors: 居荣兵; 徐正旺; 李相国
Original assignee: Aupu Home Style Corp Ltd
Current assignee: Aupu Home Style Corp Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-10-02
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a lens and a lamp, belonging to the lighting technology, the lens applied to the lamp in the prior art is difficult to obtain a large-angle uniform light shape, the lens of the utility model comprises an incident surface, a first emergent surface and a second emergent surface; a part of light rays entering the lens through the incident surface are refracted to the first emergent surface, reflected to the second emergent surface through the first emergent surface and refracted and emitted through the second emergent surface; the other part of the light entering the lens through the incident surface is refracted to the second emergent surface, reflected to the first emergent surface through the second emergent surface and refracted and emitted through the first emergent surface. The utility model discloses the homogeneity is compromise on the basis that has increased optical angle to the refraction and the total reflection principle of rational utilization of light. The total reflection surface and the light emitting surface are combined skillfully, and the processing difficulty is reduced.

Description

Lens and lamp

Technical Field

The utility model belongs to the lighting technology, concretely relates to a lens for on light.

Background

On ceiling lamps, televisions and other lighting devices, an optical lens is often required to be added on the basis of the original LED to achieve the effect of increasing the optical angle. The optical lens needs to give consideration to both large angle and uniformity, and the lens in the existing market is difficult to obtain large-angle uniform light shape due to the influence of optical principles, processing materials and other factors.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model and the technical task that provides overcome the defect that the lens of current being applied to lamps and lanterns is difficult to obtain wide-angle even light shape, provide a neotype, be applicable to the lens that obtains wide-angle even light shape on the lighting device.

In order to achieve the above object, the lens of the present invention includes an incident surface, a first emergent surface, and a second emergent surface; the method is characterized in that: a part of light rays entering the lens through the incident surface are refracted to the first emergent surface, reflected to the second emergent surface through the first emergent surface and refracted and emitted through the second emergent surface; and the other part of light rays entering the lens through the incident surface are refracted to the second emergent surface, are reflected to the first emergent surface through the second emergent surface, and are refracted and emitted through the first emergent surface.

As a preferable technical means: the first emergent surface and the second emergent surface are symmetrical and face towards the first side direction and the second side direction respectively.

As a preferable technical means: the first emergent surface and the second emergent surface are intersected and connected by a transition surface at the intersection of the first emergent surface and the second emergent surface.

As a preferable technical means: the incidence plane comprises a first incidence plane and a second incidence plane; the light rays entering the lens through the first incident surface are refracted to the first emergent surface, reflected to the second emergent surface through the first emergent surface and refracted and emitted through the second emergent surface; the light rays entering the lens through the second incident surface are refracted to the second emergent surface, are reflected to the first emergent surface through the second emergent surface, and are refracted and emitted through the first emergent surface.

As a preferable technical means: the first incident surface and the second incident surface are symmetrical, the first incident surface and the first emergent surface are positioned on the same side, and the second incident surface and the second emergent surface are positioned on the same side.

As a preferable technical means: the first incident surface is a curved surface, the curvature center of the first incident surface and the first emergent surface are respectively positioned at two sides of the first incident surface, the second incident surface is a curved surface, and the curvature center of the second incident surface and the second emergent surface are respectively positioned at two sides of the second incident surface.

As a preferable technical means: the lens also comprises a third incident surface, a fourth incident surface, a third emergent surface and a fourth emergent surface; the light rays entering the lens through the third incident surface are refracted to the third emergent surface and are refracted and emitted by the third emergent surface; and the light rays entering the lens through the fourth incident surface are refracted to the fourth emergent surface and are refracted and emitted by the fourth emergent surface.

As a preferable technical means: the third incident surface is symmetrical to the fourth incident surface, and the third emergent surface is symmetrical to the fourth emergent surface; the third incident surface and the third emergent surface are positioned at the same side as the first incident surface and the first emergent surface, and the fourth incident surface and the fourth emergent surface are positioned at the same side as the second incident surface and the second emergent surface.

As a preferable technical means: the third incident surface, the first incident surface, the second incident surface and the fourth incident surface are sequentially connected to form an accommodating groove in a surrounding mode.

In order to achieve the above object, the utility model discloses a lamp, including light source, lamp body, characterized by: will the utility model discloses a lens configuration is in on the lamp body, the order the light of light source sees through behind the lens light-passing board through the lamp body is to the side direction outgoing again.

The utility model has the advantages that:

1: the principle of refraction and total reflection of light is reasonably utilized, and uniformity is considered on the basis of increasing the optical angle.

2: the total reflection surface and the light emitting surface are combined ingeniously, and the processing difficulty can be reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of one configuration of a lens of the present invention;

FIG. 2 is a schematic diagram of the light ray tendencies of the lens of FIG. 1;

FIG. 3 is a schematic view of the lens of FIG. 1 applied to a lamp;

FIG. 4 is a schematic diagram illustrating surface luminance uniformity of the lamp of FIG. 3;

the reference numbers in the figures illustrate:

100 lenses: 101 a first incident surface, 102 a second incident surface, 103 a first emergent surface, 104 a second emergent surface, 105 a transition surface connection, 106 a third incident surface, 107 a fourth incident surface, 108 a third emergent surface, 109 a fourth emergent surface, 110 a containing groove;

200 lamp bodies;

300 light source.

Detailed Description

The present invention will be further explained with reference to the drawings attached to the specification.

The lens shown in fig. 1 includes an incident surface, a first exit surface 103, and a second exit surface 104. The incident surface includes a first incident surface 101 and a second incident surface 102. The first exit surface 103 and the second exit surface 104 are symmetrical and face to a first lateral direction and a second lateral direction respectively. The first exit face 103 and the second exit face 104 intersect and are connected by a transition face 105 at the intersection. The first incident surface 101 and the second incident surface 102 are symmetrical, the first incident surface 101 and the first emergent surface 103 are located on the same side, and the second incident surface 102 and the second emergent surface 104 are located on the same side.

As shown in fig. 2, the light entering the lens through the first incident surface 101 is refracted to the first exit surface 103, reflected to the second exit surface 104 by the first exit surface 103, and refracted to exit through the second exit surface 104; the light entering the lens through the second incident surface 102 is refracted to the second exit surface 104, reflected to the first exit surface 103 by the second exit surface 104, and refracted to exit through the first exit surface 103.

The first incident surface 101 is a curved surface, and the center of curvature and the first emergent surface 103 are respectively located at two sides of the first incident surface 101, and the second incident surface 102 is a curved surface, and the center of curvature and the second emergent surface 104 are respectively located at two sides of the second incident surface 104.

As shown in fig. 2, the lens further includes a third incident surface 106, a fourth incident surface 107, a third emergent surface 108, and a fourth emergent surface 109; the light entering the lens through the third incident surface 106 is refracted to the third exit surface 108, and is refracted and emitted by the third exit surface 108; the light entering the lens through the fourth incident surface 107 is refracted to the fourth exit surface 109 and refracted by the fourth exit surface 109.

The third incident surface 106 is symmetrical to the fourth incident surface 107, and the third emergent surface 108 is symmetrical to the fourth emergent surface 109; the third incident surface 106 and the third emission surface 108 are located on the same side as the first incident surface 101 and the first emission surface 103, and the fourth incident surface 107 and the fourth emission surface 109 are located on the same side as the second incident surface 102 and the second emission surface 104.

The third incident surface 106, the first incident surface 101, the second incident surface 102, and the fourth incident surface 107 are sequentially connected to form the accommodating groove 110, and when the lamp is formed, the light source 300, such as an LED light bar, is disposed in the accommodating groove.

In the lamp shown in fig. 3, the light source 300, such as an LED light bar, is disposed in the accommodating groove of the lens and then assembled to the lamp body, so that light of the light source is emitted laterally through the transparent plate of the lamp body after passing through the lens, and the upper and lower sides of the lens 100 shown in fig. 3 are lateral emitting directions of the light. In the lamp shown in fig. 3, the brightness of the surface of the lamp is measured from the position of the transparent plate corresponding to the lens 100 to both sides of the lens, and the brightness uniformity of the surface of the lamp is shown in fig. 4. The abscissa in fig. 4 is the position of the luminaire surface, the 0 point is the position of the corresponding lens 100, and the ordinate in fig. 4 is the surface brightness. The curve shown in fig. 4 shows that the uniformity of the luminance is compromised on the basis of the increased optical angle.

Claims

1. The lens comprises an incident surface, a first emergent surface and a second emergent surface; the method is characterized in that: a part of light rays entering the lens through the incident surface are refracted to the first emergent surface, reflected to the second emergent surface through the first emergent surface and refracted and emitted through the second emergent surface; and the other part of light rays entering the lens through the incident surface are refracted to the second emergent surface, are reflected to the first emergent surface through the second emergent surface, and are refracted and emitted through the first emergent surface.

2. The lens of claim 1, wherein: the first emergent surface and the second emergent surface are symmetrical and face towards the first side direction and the second side direction respectively.

3. The lens of claim 2, wherein: the first emergent surface and the second emergent surface are intersected and connected by a transition surface at the intersection of the first emergent surface and the second emergent surface.

4. A lens according to any one of claims 1 to 3, wherein: the incidence plane comprises a first incidence plane and a second incidence plane; the light rays entering the lens through the first incident surface are refracted to the first emergent surface, reflected to the second emergent surface through the first emergent surface and refracted and emitted through the second emergent surface; the light rays entering the lens through the second incident surface are refracted to the second emergent surface, are reflected to the first emergent surface through the second emergent surface, and are refracted and emitted through the first emergent surface.

5. The lens of claim 4, wherein: the first incident surface and the second incident surface are symmetrical, the first incident surface and the first emergent surface are positioned on the same side, and the second incident surface and the second emergent surface are positioned on the same side.

6. The lens of claim 5, wherein: the first incident surface is a curved surface, the curvature center of the first incident surface and the first emergent surface are respectively positioned at two sides of the first incident surface, the second incident surface is a curved surface, and the curvature center of the second incident surface and the second emergent surface are respectively positioned at two sides of the second incident surface.

7. The lens of claim 5, wherein: the lens also comprises a third incident surface, a fourth incident surface, a third emergent surface and a fourth emergent surface; the light rays entering the lens through the third incident surface are refracted to the third emergent surface and are refracted and emitted by the third emergent surface; and the light rays entering the lens through the fourth incident surface are refracted to the fourth emergent surface and are refracted and emitted by the fourth emergent surface.

8. The lens of claim 7, wherein: the third incident surface is symmetrical to the fourth incident surface, and the third emergent surface is symmetrical to the fourth emergent surface; the third incident surface and the third emergent surface are positioned at the same side as the first incident surface and the first emergent surface, and the fourth incident surface and the fourth emergent surface are positioned at the same side as the second incident surface and the second emergent surface.

9. The lens of claim 8, wherein: the third incident surface, the first incident surface, the second incident surface and the fourth incident surface are sequentially connected to form an accommodating groove in a surrounding mode.

10. The lens of claim 1, wherein: the lens also comprises a third incident surface, a fourth incident surface, a third emergent surface and a fourth emergent surface; the light rays entering the lens through the third incident surface are refracted to the third emergent surface and are refracted and emitted by the third emergent surface; and the light rays entering the lens through the fourth incident surface are refracted to the fourth emergent surface and are refracted and emitted by the fourth emergent surface.

11. Lamps and lanterns, including light source, lamp body, characterized by: the lens of any one of claims 1-10 is disposed on the lamp body, so that the light from the light source is transmitted through the lens and then emitted out through the light-transmitting plate of the lamp body in a lateral direction.