CN204962618U

CN204962618U - Lens with rectangle illuminance

Info

Publication number: CN204962618U
Application number: CN201520526799.8U
Authority: CN
Inventors: 赵维; 王卫国
Original assignee: Shenzhen Cgx Optoelectronic Technology Inc
Current assignee: Shenzhen Cgx Optoelectronic Technology Inc
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2016-01-13
Anticipated expiration: 2025-07-20

Abstract

The utility model is suitable for a lighting technology field provides a lens with rectangle illuminance, lens include a light incidence portion, a light reflection portion, a light outgoing portion along the light path direction, the one side of light incidence portion has a recess that is used for placing the light source, and the border of another side has four basic points, four basic points are and radially extend into four arriss to the light path orientation, are arc surface connection between each arris, form light reflection portion. The utility model provides a lens enable light form a rectangle illuminance behind lens reflections that the light source sent, have both solved dead angle and solid phenomenon that traditional lens exist, have practiced thrift the resource again, avoid extravagant.

Description

A kind of lens with rectangle illumination

Technical field

The utility model belongs to lighting technical field, particularly relates to a kind of lens with rectangle illumination.

Background technology

LED semiconductor lighting is the revolution again of lighting source after incandescent lamp, fluorescent lamp.LED as new and effective solid light source, the advantage such as principle has energy-saving and environmental protection, long-life, volume is little, occupation mode is various.In recent years, the development of LED semiconductor illumination technique rapidly, application is extensive, industry drive property is strong, energy-saving potential is large, being known as the most promising by various countries, is also few in number may grasp key core technology and one of emerging strategic industries of tool broad mass market prospect in China.

According to emission wavelength, LED can divide and makes ultraviolet LED, visible LED, infrared LED.The various fields such as room lighting, outdoor lighting, Landscape Lighting, FPD, sterilizing, infrared security protection can be widely used in.Because LED is Lambertian source.At present in most application, the illumination of LED is all circular.But in the such as field such as street lamp, infrared monitoring, the circular irradiation area of adjacent light source can not realize seamless spliced, there is dead angle and blackening, as seamless spliced in realized, then there is a large portion region to there is overlapping irradiation, great waste can be caused.

In sum, design a difference according to application places, the lens forming rectangle illumination in the region needing illumination are necessary very much.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of lens with rectangle illumination, is intended to the dead angle of existence when solution conventional lenses is irradiated, blackening phenomenon and wasting of resources situation.

The utility model is achieved in that a kind of lens with rectangle illumination, and described lens comprise a light portion, a light reflection portion, a beam projecting portion along optical path direction; The one side in described light portion has the groove for placing light source, and the edge of another side has four basic points, and described four basic points radially extend into four ribs to optical path direction, for cambered surface is connected to form described light reflection portion between each rib.

Further, with the center of the another side in described light portion be initial point, with the plane at its place for XY face, take light direction as Z-direction, the XZ profile of lens and YZ profile are by beam projecting limit, light reflection limit, light limit composition, and two profiles are all symmetrical along Z axis.

Further, described light limit comprises 2 straight lines and 1 curve, and described light reflection limit comprises 2 curves, and described beam projecting limit comprises straight line.

Further, described light portion, light reflection portion, beam projecting portion are formed after revolving turnback by the light limit of described YZ profile or XZ profile, light reflection limit, beam projecting edge Z axis, described light limit, light reflection limit, beam projecting limit in rotary course with the mode consecutive variations of linear interpolation.

Further, the rotational trajectory on described beam projecting limit is non-ellipse, hyperbola or parabolical smooth gradient ramp.

Further, after described YZ profile 90-degree rotation, form XZ profile, after described XZ profile 90-degree rotation, form YZ profile.

Further, described lens are made up of PMMA, PC, ABS, PP, PVC or glass material.

Further, described light source is LED light source.

The utility model compared with prior art, beneficial effect is: the lens of rectangle illumination that what the utility model provided have, the light that light source can be made to send forms rectangle illumination after reflection from lens, both the dead angle and blackening phenomenon that exist when conventional lenses is irradiated had been solved, again save resource, avoid waste.

Accompanying drawing explanation

Fig. 1 is front, the side perspective view with the lens of rectangle illumination that the utility model embodiment 1 provides;

Fig. 2 a is the YZ profile of front, the side stereogram that the utility model embodiment 1 provides;

Fig. 2 b is the XZ profile of front, the side stereogram that the utility model embodiment 1 provides;

Fig. 3 a is the light intensity Illumination Distribution figure of light in irradiated plane of this embodiment, and its transverse axis and longitudinal axis unit are millimeter; Shinny part is the region that light is irradiated to, and irradiation area is the rectangle of length-width ratio 3:4, and the brightness of figure represents illumination power, brightlyer shows that illumination is stronger; Have the straight line that a horizontal linear is vertical with in Fig. 3 a, these two lines are at the central crossbar of irradiation area;

Fig. 3 b measures the light intensity Illumination Distribution schematic diagram along the straight line of two in Fig. 3 a respectively, and transverse axis is length, unit millimeter, and the longitudinal axis is that illumination is strong and weak, unit W/m ², all concentrated in rectangular light spot by illumination that is vertical and horizontal direction as seen from the figure, the light intensity change on irradiation area border is very precipitous, and after being beyond the boundary, light intensity declines rapidly.

Fig. 4 is front, the side perspective view with the lens of rectangle illumination that the utility model embodiment 2 provides;

Fig. 5 is the YZ profile of front, the side stereogram that the utility model embodiment 2 provides;

Fig. 6 a is the light intensity Illumination Distribution figure of light in irradiated plane of this embodiment, and its transverse axis and longitudinal axis unit are millimeter; Shinny part is the region that light is irradiated to, and irradiation area is the rectangle of length-width ratio 1:1; The brightness of figure represents illumination power, brightlyer shows that illumination is stronger; Have the straight line that a horizontal linear is vertical with in Fig. 6 a, these two lines are at the central crossbar of irradiation area;

Fig. 6 b measures the light intensity Illumination Distribution schematic diagram along the straight line of two in Fig. 6 a respectively, and transverse axis is length, unit millimeter, and the longitudinal axis is that illumination is strong and weak, unit W/m ², all concentrated in rectangular light spot by illumination that is vertical and horizontal direction as seen from the figure, the light intensity change on irradiation area border is very precipitous, and after being beyond the boundary, light intensity declines rapidly.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, 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 explain the utility model, and be not used in restriction the utility model.

The utility model provides a kind of lens with rectangle illumination, is illustrated in figure 1 its front, side three-dimensional structure diagram, and described lens comprise beam projecting portion 11 of 12, one, light reflection portion of 13, one, a light portion along optical path direction; The one side in described light portion 13 has the groove for placing light source, light source is positioned in the groove of incident section, the edge of another side has four basic points, described four basic points radially extend into four ribs to optical path direction, for cambered surface connects between each rib, form described light reflection portion 12.The light that light source sends is injected in the middle of lens by light portion 13, after the reflection in light reflection portion 12, from beam projecting portion 11 outgoing, its emergent light spot has the illumination of rectangle, and the length-width ratio of rectangle is determined by the length ratio on the XZ profile of lens and the beam projecting limit of YZ profile; In addition, described lens are made up of PMMA, PC, ABS, PP, PVC or glass material.

Lift two specific embodiments below and introduce this lens with rectangle illumination:

Embodiment 1:

As shown in Figure 2, Fig. 2 a is the YZ profile of Fig. 1, Fig. 2 b is the XZ profile of Fig. 1, with the center of the another side in described light portion 11 be initial point, with the plane at its place for XY face, take light direction as Z-direction, described lens are LED lens, and its YZ profile is made up of beam projecting limit 14, light reflection limit 15, light limit 16; XZ profile is made up of beam projecting limit 17, light reflection limit 18, light limit 19.In two profiles, light reflection limit is all made up of 2 curves, and beam projecting limit is all by 1 rectilinear(-al), and light limit is all made up of 2 straight lines and 1 curve.The beam projecting edge lengths of YZ profile and XZ profile is than being 4:3.YZ profile rotates along Z axis, in rotary course, light reflection limit 15 and light limit 16 form transition with the mode consecutive variations of linear interpolation, XZ profile is formed after 90-degree rotation, along with the change of light reflection limit 15 length, beam projecting limit 14 also corresponding consecutive variations forms transition, then XZ profile finally forms light portion 13, light reflection portion 12 and beam projecting portion 11 with identical direction 90-degree rotation, and its generation type is linear interpolation mode; In addition, the rotational trajectory on described beam projecting limit is non-ellipse, hyperbola or parabolical smooth gradient ramp.

Described lens are made up of polymethyl methacrylate (PMMA) material, and as shown in Figure 3 a and Figure 3 b shows, emergent light spot is the rectangular light spot of length-width ratio 4:3 to the Illumination Distribution effect schematic diagram of the light that light source described in the present embodiment sends after reflection from lens.

Embodiment 2:

As shown in Figure 4, the lens described in the present embodiment are LED lens, and it is made up of beam projecting portion 21, light reflection portion 22 and light portion 23, and light source is placed in the groove that light portion 23 surrounds.

Fig. 5 is the YZ profile of Fig. 4, with the center of the another side in described light portion be initial point, with the plane at its place for XY face, take light direction as Z-direction, YZ profile is made up of light limit 26,25, one, light reflection limit, 24, one, a beam projecting limit; XZ profile shape is consistent with the shape of YZ profile.Light reflection limit in two profiles is all made up of 2 curves, and beam projecting limit is by 1 rectilinear(-al).Light limit is all made up of 2 straight lines and 1 curve.

YZ profile rotates along Z axis, in rotary course, light reflection limit and light limit form transition with the mode consecutive variations of linear interpolation, XZ profile is formed after 90-degree rotation, along with the change of light reflection edge lengths, beam projecting limit also corresponding consecutive variations forms transition, then XZ profile finally forms light portion 23, light reflection portion 22 and beam projecting portion 21 with identical direction 90-degree rotation, its generation type is linear interpolation mode, and the YZ profile of described lens and the beam projecting edge lengths of XZ profile are than being 1:1.

Described lens are made up of Merlon (PC) material.As shown in figures 6 a and 6b, emergent light spot is the rectangular light spot of length-width ratio 1:1 to the Illumination Distribution effect schematic diagram of the light that light source described in the present embodiment sends after reflection from lens.

The lens of rectangle illumination that what the utility model provided have, had both solved dead angle and blackening phenomenon that conventional lenses exists, and had again saved resource, avoid waste.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.

Claims

1. have lens for rectangle illumination, it is characterized in that, described lens comprise a light portion, a light reflection portion, a beam projecting portion along optical path direction; The one side in described light portion has the groove for placing light source, and the edge of another side has four basic points, and described four basic points radially extend into four ribs to optical path direction, for cambered surface connects between each rib, forms described light reflection portion.

2. there are the lens of rectangle illumination as claimed in claim 1, it is characterized in that, with the center of the another side in described light portion be initial point, with the plane at its place for XY face, take light direction as Z-direction, the XZ profile of lens and YZ profile are by beam projecting limit, light reflection limit, light limit composition, and two profiles are all symmetrical along Z axis.

3. have the lens of rectangle illumination as claimed in claim 2, it is characterized in that, described light limit comprises 2 straight lines and 1 curve, and described light reflection limit comprises 2 curves, and described beam projecting limit comprises straight line.

4. there are the lens of rectangle illumination as claimed in claim 2, it is characterized in that, described light portion, light reflection portion, beam projecting portion are formed after revolving turnback by the light limit of described YZ profile or XZ profile, light reflection limit, beam projecting edge Z axis, described light limit, light reflection limit, beam projecting limit in rotary course with the mode consecutive variations of linear interpolation.

5. have the lens of rectangle illumination as claimed in claim 4, it is characterized in that, the rotational trajectory on described beam projecting limit is non-ellipse, hyperbola or parabolical smooth gradient ramp.

6. there are the lens of rectangle illumination as claimed in claim 4, it is characterized in that, after described YZ profile 90-degree rotation, form XZ profile, after described XZ profile 90-degree rotation, form YZ profile.

7. have the lens of rectangle illumination as claimed in claim 1, it is characterized in that, described lens are made up of PMMA, PC, ABS, PP, PVC or glass material.

8. have the lens of rectangle illumination as claimed in claim 1, it is characterized in that, described light source is LED light source.