CN202813211U

CN202813211U - Optical lens

Info

Publication number: CN202813211U
Application number: CN2012203629882U
Authority: CN
Inventors: 岑亮; 刘振
Original assignee: Shenzhen Langheng Electronic Co Ltd
Current assignee: Shenzhen Langheng Lighting Technology Co ltd
Priority date: 2012-07-25
Filing date: 2012-07-25
Publication date: 2013-03-20
Anticipated expiration: 2022-07-25

Abstract

The utility model discloses an optical lens which comprises a light source and a lens. Light emitted from the light source comes out of the lens. Centers of the lens and the light source form an optical axis. The lens comprises more than two refracting surfaces. Each refracting surface has an included angle m with the optical axis, wherein m is not smaller than 13 DEG and not larger than 72 DEG. Compared with the prior art, the optical lens is provided with the lens having more than two refracting surfaces while the angle between the refracting surfaces and the optical axis is controlled within a certain range, the light below is compensated by the light above after the light emitted from the light source is refracted, and accordingly luminous efficiency utilization rate is increased. In addition, a light spot can be formed below a main spot, approximately two light sources are realized, blind areas of the front spot are eliminated, and total luminous efficiency of an overall optical system is unaffected.

Description

Optical lens

Technical field

The utility model relates to the optical lens field, relates in particular to a kind of optical lens for bicycle.

Background technology

In the bicycle field, bicycle includes headlamp and taillight, traditional bicycle headlamp, and main spot place light is brighter, and the floodlight district is darker, and in the driving process, there is the blind area in illumination nearby, in the process of particularly running at high speed, cannot confirm fast near objects.Simultaneously, used optical system can produce wide-angle overflow light, satisfy the need upper pedestrian and bicyclist causes interference, increase accident potential, in the design of existing headlamp, what the overflow light that optical system is sent adopted usually is by rigid method of blocking overflow light to be blocked, and so just produces larger light loss.

The utility model content

The technical problems to be solved in the utility model is, produces easily the defective of light loss for optical lens of the prior art, and a kind of optical lens is provided, and this technical scheme can make overflow light by refraction, compensates to the below, and increases the light efficiency utilization rate.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of optical lens, comprise a light source and lens, the rays pass through lens that described light source penetrates and penetrating, these lens and light source center form an optical axis, wherein: described lens comprise plural plane of refraction, and the angle of each plane of refraction and optical axis is 13 °≤m≤72 °.

Implement the technical solution of the utility model, has following beneficial effect: compared with prior art, the utility model is by designing the lens with two above planes of refraction, and with the control of the angle of plane of refraction and optical axis within the specific limits, after making the folding face of the rays pass through lens that light source penetrates, do not produce overflow light, and compensate to the below, thereby increase the light efficiency utilization rate; And can also below main spot, produce a hot spot, and reach the effect of approximate two light sources, make the place ahead hot spot non-blind area, total light efficiency of whole optical system can not be affected.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the structural representation of the utility model lens;

Fig. 2 is the structural representation of the utility model optical lens;

Fig. 3 is the light channel structure schematic diagram of the light of light source ejaculation of the present utility model;

Fig. 4 is the light channel structure schematic diagram of the rays pass through lens of light source ejaculation of the present utility model;

Fig. 5 is the distribution curve flux schematic diagram of optical lens of the present utility model;

Fig. 6 is the light efficiency structural representation of the hot spot of optical lens formation of the present utility model.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

See also Fig. 1-shown in Figure 4, the utility model embodiment provides a kind of optical lens, comprise a light source 1 and lens 3, the rays pass through lens 3 that described light source 1 penetrates and penetrating, be formed centrally an optical axis 4 in this lens 3 and the light source 1, described lens 3 comprise plural plane of refraction, present embodiment be refracted as four, plane of refraction A, B, D and E are example, but are not limited to four planes of refraction; The angle of each plane of refraction A, B, D and E and optical axis 4 is m, wherein 13 °≤m≤72 °.The optical lens of the utility model embodiment design because the plane of refraction of lens has certain angle with the angle of optical axis 4, makes light compensation that light source upwards penetrates to the below, the utilization rate of increase light efficiency, as illustrated in Figures 5 and 6.

As shown in Figure 4, the described light source 1 of the utility model embodiment is installed on the speculum 2, described lens 3 and light source 1 corresponding plane of incidence C is a level crossing, be injected into again the plane of incidence C of lens 3 after the light that described light source 1 penetrates reflects through speculum 2, penetrate via plane of refraction A, B, D and E again.As shown in Figure 4, the light that light source 1 sends is through behind the speculum 2, light is similar to and optical axis 4 parallel ejaculations, and light is injected lens 3 by plane of incidence C, and light reflects through face A, the angle of face A and axis is m, straight line L is face A normal, and this normal forms two angle Q1 and Q2, and Q2＞Q1, the angle of final emergent ray and optical axial is K, and 0 °＜K＜45 °.Simultaneously, plane of refraction B, D and E that light incides lens 3 also are same principles, and therefore not to repeat here.

As shown in Figure 3, the light that the light source 1 of the utility model embodiment penetrates directly is mapped to the plane of incidence C of lens 3 without speculum 2, and its axis 4 and A face angle m satisfy large 13 °≤m≤72 °, A, B, C face are minute surface in addition, and the light of ejaculation is identical with the A face.

As shown in Figure 3, after the light that light source 1 sends directly entered lens 3, light was injected lens 3 by plane of incidence C, light reflects at plane of refraction C place, among Fig. 3, straight line I is face C normal, forms two angle P1 and P2, and P1＞p2, straight line L is face A normal, forms two angle Q1 and Q2, and Q2＞Q1, the angle of final emergent ray and optical axial is K, 0 °＜K＜45 °.

The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.

Claims

1. optical lens, comprise a light source and lens, the rays pass through lens that described light source penetrates and penetrating, these lens and light source center form an optical axis, it is characterized in that: described lens comprise plural plane of refraction, and the angle of each plane of refraction and optical axis is 13 °≤m≤72 °.

2. optical lens according to claim 1, it is characterized in that: described light source is installed on the speculum, and the light that described light source penetrates is injected in the lens through after the mirror reflects again, penetrates via plane of refraction again.

3. optical lens according to claim 1 and 2, it is characterized in that: described plane of refraction is four.

4. optical lens according to claim 3, it is characterized in that: the described lens plane of incidence corresponding with light source is a level crossing.

5. optical lens according to claim 2 is characterized in that: the light that described plane of refraction penetrates and the angle of optical axis are K, wherein, and 0 °＜K＜45 °.