CN201621617U

CN201621617U - LED condenser lens

Info

Publication number: CN201621617U
Application number: CN2010201292625U
Authority: CN
Inventors: 陈锦定
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-08
Filing date: 2010-03-08
Publication date: 2010-11-03
Anticipated expiration: 2020-03-08

Abstract

The utility model discloses an LED condenser lens, comprising a lens body, wherein the lens body is of a frustum-shaped cup body and comprises a body lower part and a body top part; the bottom surface of the body lower part is inwards and concavely provided with an inwards concave part, the top of which is inwards and convexly provided with an incident plane towards the inwards concave part; the body top part comprises a base surface and an emergent plane; and the base is a plane, and the emergent plane consists of a first emergent plane and a second emergent plane which are respectively an inclined plane unparallel to the base surface. The LED condenser lens can effectively condenses the light emitted by an LED to the needed angle range for reflection and simultaneously improve the light-emitting intensity and brightness, and is applicable to underground and ceiling wall washing lights.

Description

The LED collector lens

Technical field

The utility model relates to lighting engineering, relates more specifically to a kind of LED collector lens.

Background technology

LED (light emitting diode) is as a kind of luminescent device that directly electric energy is converted into visible light and radiant energy, extensively thought top quality light source of 21 century, it has series of advantages, low as operating voltage, power consumption is little, the luminous efficiency height, and LED itself and manufacturing process thereof are all pollution-free, stable and reliable for performance.

At present, be that the light fixture of light source generally all adopts LED is fixed on the heat abstractor that has fin with the great power LED, and reflect with the light that reflection shield sends LED and to make light fixture, or according to the light that LED sends compare with other point light source light-emittings that front-to-back ratio is consistent, light relatively concentrates the characteristic that penetrates side in face of the light, add lens at the LED direction of illumination and change light and distribute.

Yet, most traditional optical lens such as cylindrical mirror or spherical mirror etc. that use, a general smooth flat or the smooth surface of adopting of their exiting surface, they are bigger to the rising angle of LED, illumination range is wider, and most of place needs that the little but light of illumination range is concentrated, the high illumination hot spot of brightness in the actual illumination, as bury ground, ceiling is washed wall.In these cases, if adopt to produce illumination range bigger bury ground, the design of ceiling wall lamp lens, some light can shine outside the required field of illumination, causes the waste even the light pollution of luminous energy, simultaneously also make required surround intraoral illumination intensity obviously not enough, the wall effect is washed in influence.

Therefore, be necessary to provide a kind of improved LED collector lens to overcome above-mentioned defective.

The utility model content

The purpose of this utility model provides a kind of LED collector lens, is applicable to bury ground, ceiling wall lamp, and the light that can LED be sent focuses on required angular range ejaculation and improves luminous intensity and brightness simultaneously.

For realizing above-mentioned purpose of the present utility model, the utility model adopts following technical scheme: a kind of LED collector lens, comprise lens body, described lens body is the truncated cone-shaped cup, comprise body bottom and bodies top, the bottom surface of described body bottom is concaved with inner fovea part, and the inside recess convex in the top of described inner fovea part is provided with the plane of incidence; Described bodies top comprises basal plane and exit facet, and described basal plane is the plane, and described exit facet comprises that first exit facet and second exit facet and described first exit facet and described second exit facet are and the uneven inclined plane of described basal plane.

Preferably, the angle of described first exit facet and described basal plane is greater than 0 ° and less than 90 °, and the angle of described second exit facet and described basal plane is greater than 0 ° and less than 90 °.

Preferably, described first exit facet is parallel with described second exit facet.

Preferably, described exit facet also comprises the 3rd exit facet, and described the 3rd exit facet connects described first exit facet and described second exit facet.

Preferably, described the 3rd exit facet is vertically divided described basal plane equally.

Preferably, the angle of described first exit facet and described basal plane equals 30 °; The angle of described second exit facet and described basal plane equals 30 °.

Preferably, the lateral surface of described body bottom is made of the different sphere of a plurality of curvature.

Compared with prior art, the light that LED collector lens of the present utility model adopts first exit facet and second exit facet that led light source is sent is concentrated ejaculation, thereby in required angular range, improve the brightness and the illuminance of light, therefore can avoid causing the waste even the light pollution of luminous energy, be applicable to and bury ground, ceiling wall lamp etc.

By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.

Description of drawings

Fig. 1 is the stereogram of the utility model LED collector lens.

Fig. 2 is the stereogram of the lens body of LED collector lens shown in Figure 1.

Fig. 3 is the side view of lens body shown in Figure 2.

Fig. 4 is the vertical view of lens body shown in Figure 2.

Fig. 5 is the cutaway view of lens body shown in Figure 4.

The specific embodiment

With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model provides a kind of LED collector lens, is applicable to bury ground, ceiling wall lamp, and the light that can LED be sent focuses on required angular range ejaculation and improves luminous intensity and brightness simultaneously.

To shown in Figure 5, be a kind of LED collector lens of the present utility model as Fig. 1.At first please refer to Fig. 1, be the stereogram of the utility model LED collector lens 100, this LED collector lens 100 comprises lens pedestal 10 and lens body 20.Described lens pedestal 10 bottom center positions be provided be used to hold the led chip that is installed on the circuit board 50 and with the pit (not shown) of led chip interference fit.Described lens pedestal 10 is preferably cylinder or square body.

Please refer to Fig. 2, figure is the stereogram of the lens body 20 of the utility model LED collector lens 100.The lens body 20 of described LED collector lens 100 is the truncated cone-shaped cup, and described lens body 20 comprises bodies top 21 and body bottom 22.Described bodies top 21 comprises basal plane 211 and exit facet 212.

Please refer to Fig. 5, the bottom surface 221 of described body bottom 22 is concaved with inner fovea part 222, and the lens body 20 of described LED collector lens 100 fastens by described inner fovea part 222 and described lens pedestal 10, thereby is fixed on the described lens pedestal 10.Convex with the plane of incidence 223 in the inside recess 222 in the top of described inner fovea part 222, the light that led light source sends enters described lens body 20 inside by the described plane of incidence 223.Optical principle by concavees lens can know that the LED light that is entered described lens body 20 inside by the described plane of incidence 223 can flock together through the described plane of incidence 223, and penetrates from the exit facet 212 of described bodies top 21.The lateral surface 224 of described body bottom 22 is made of the different sphere of a plurality of curvature, can carry out the refraction or the reflection of different angles to the LED light that enters described lens body 20 inside, the LED light that enters described lens body 20 inside can be gathered from the exit facet 212 of described bodies top 21 penetrate.

Please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the bodies top 21 of described lens body 20 comprises basal plane 211 and exit facet 212.Described basal plane 211 is a plane, and described exit facet 212 comprises the first exit facet 212a, the second exit facet 212b and the 3rd exit facet 212c.Wherein, described the 3rd exit facet 212c connects described first exit facet 212a and the described second exit facet 212b.In an embodiment, described the 3rd exit facet 212c vertically divides described basal plane 211 equally, be that described the 3rd exit facet 212c is perpendicular to described basal plane 211 and be positioned on the symmetry axis of described basal plane 211, and described first exit facet 212a and the described second exit facet 212b lay respectively at the both sides of described symmetry axis, and the described first exit facet 212a and the described second exit facet 212b are asymmetric distribution with respect to described symmetry axis.Described first exit facet 212a and the described second exit facet 212b are and described basal plane 211 uneven inclined planes, and the angle of described first exit facet 212a and described basal plane 211 is A1,0 °＜A1＜90 °; The angle of described second exit facet 212b and described basal plane 211 is A2,0 °＜A2＜90 °.

Preferably, as shown in Figure 3, the described first exit facet 212a is parallel to the described second exit facet 212b, and the included angle A 1 of described first exit facet 212a and described basal plane 211 equals 30 °, and the included angle A 2 of described second exit facet 212b and described basal plane 211 equals 30 °.

In sum, when entering described lens body 20 inner LED light under the effect of the plane of incidence 223 of described body bottom 22 and lateral surface 224, gather when the exit facet 212 of described bodies top 21 penetrates, described LED light mainly outwards penetrates by described first exit facet 212a and the described second exit facet 212b, outwards penetrates thereby concentrate in certain angular range; Simultaneously, have common factor from the light of described first exit facet 212a ejaculation and the light that penetrates from the described second exit facet 212b in the central area of described shooting angle scope, and the brightness of this central area is the highest, thereby in required angular range, improve the brightness and the illuminance of light, therefore can avoid causing the waste even the light pollution of luminous energy, be applicable to and bury ground, ceiling wall lamp etc.

Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to essence of the present utility model in conjunction with most preferred embodiment.

Claims

1. a LED collector lens comprises lens body, and described lens body is the truncated cone-shaped cup, comprises body bottom and bodies top, and the bottom surface of described body bottom is concaved with inner fovea part, and the inside recess convex in the top of described inner fovea part is provided with the plane of incidence; Described bodies top comprises basal plane and exit facet, and described basal plane is the plane, it is characterized in that: described exit facet comprises that first exit facet and second exit facet and described first exit facet and described second exit facet are and the uneven inclined plane of described basal plane.

2. LED collector lens as claimed in claim 1 is characterized in that: the angle of described first exit facet and described basal plane is greater than 0 ° and less than 90 °, and the angle of described second exit facet and described basal plane is greater than 0 ° and less than 90 °.

3. LED collector lens as claimed in claim 2 is characterized in that: described first exit facet is parallel with described second exit facet.

4. LED collector lens as claimed in claim 1 is characterized in that: described exit facet also comprises the 3rd exit facet, and described the 3rd exit facet connects described first exit facet and described second exit facet.

5. LED collector lens as claimed in claim 4 is characterized in that: described the 3rd exit facet is vertically divided described basal plane equally.

6. LED collector lens as claimed in claim 3 is characterized in that: the angle of described first exit facet and described basal plane equals 30 °; The angle of described second exit facet and described basal plane equals 30 °.

7. LED collector lens as claimed in claim 1 is characterized in that: the lateral surface of described body bottom is made of the different sphere of a plurality of curvature.