CN202024249U - Improved LED (light-emitted diode) light source lens with multiple optical refractions - Google Patents

Abstract

The utility model discloses an improved LED (light-emitted diode) light source lens with multiple optical refractions. The improved LED light source lens is wholly made of transparent materials, and comprises a base for fixed installation. The improved LED light source lens is characterized in that a drum-shaped convex surface is bunched on the front surface of the base, an oval concave surface is depressed inwards in the bake surface of the base, and at least one pair of olive-shaped convex surfaces symmetrically arranged is formed on the oval-shaped concave surface. According to the design, the structure is simple, the wider illuminance distribution and the better uniformity can be realized, and the cost and the energy consumption are reduced greatly, so that the improved LED light source lens is applicable to various illuminators taking LEDs as light sources.

Description

A kind of led light source camera lens of improved multiple optics refraction

Technical field

It is the illuminator of light source that the utility model belongs to LED, particularly relates to the camera lens of optical design.

Background technology

Along with the production cost of high-energy led light source reduces greatly, led light source has been generally acknowledged and has been accepted as the lighting source of at present energy-saving and environmental protection.But because led light source has unique characteristics of luminescence, angle that it is luminous and Energy distribution and traditional electric light source have very large difference.So generally speaking, for satisfying the requirement of general lighting, the eyeglass or the camera lens that need optical design cooperate with it.And in the present existing LED illuminator, almost fail on the Energy distribution of rules requires up to standardly, its main cause just is the design existing problems of light refraction.Especially in street lamp illumination system, such problem is particularly outstanding, the lens design of led light source is bad, directly influence the Illumination Distribution and the uniformity of street lamp, the spacing that people have to shorten between the street lamp is avoided problem, but this has increased the quantity of street lamp virtually, with the original intention of energy-saving and emission-reduction be opposing.

The utility model content

The purpose of this utility model is the defective that overcomes above-mentioned prior art, proposes a kind of simple in structurely, can realize the led light source camera lens of the multiple optics refraction of the wider Illumination Distribution and the preferable uniformity.

The purpose of this utility model is achieved by the following technical solution: a kind of led light source camera lens of improved multiple optics refraction, integral body is transparent material, include the pedestal of fixed installation usefulness, it is characterized in that: the positive protuberance of pedestal has dolioform convex surface, the pedestal back side oval concave surface that then caved inward, and on oval concave surface, be formed with the olive shape convex surface that at least one pair of is symmetric arrangement again.Further, dolioform convex surface is lateral arrangement, and oval concave surface is vertical layout.The olive shape convex surface has four on the oval concave surface, two big two little, be vertical symmetric arrays.

Such design by convex surfaces different inside and outside the camera lens and concave surface, reflects the multiple optics that produces of led light source when penetrating camera lens, realize the wider Illumination Distribution and the preferable uniformity.When specifically being applied to street lamp illumination system, can satisfy 8 meters high LED street lamp, its facula area that shines ground is 40 meters * 20 meters, and the uniformity is greater than 0.8, and average illumination is greater than 20Lx, at 8000-10000Lm.

Description of drawings

Fig. 1 is a front of the present utility model schematic perspective view;

Fig. 2 is a back side of the present utility model schematic perspective view;

Fig. 3 is an orthographic projection schematic diagram in the back side of the present utility model;

Fig. 4 is the A-A cross-sectional schematic of Fig. 3;

Fig. 5 is the schematic top plan view of Fig. 3;

Fig. 6 is the schematic rear view of Fig. 3.

The specific embodiment

Referring to Fig. 1 one Fig. 6, the led light source camera lens of the multiple optics refraction of present embodiment, whole material is clear polycarbonate PC, include the pedestal 1 of fixed installation usefulness, at the dolioform convex surface 2 of pedestal 1 positive protuberance, the oval concave surface 3 that caves inward at the pedestal back side, dolioform convex surface 2 is lateral arrangement, and oval concave surface 3 is vertical layout, and is formed with the olive shape convex surface 4,5,6,7 of four vertical symmetric arrays on oval concave surface 3 again.In four olive shape convex surfaces, two big olive shape convex surfaces 4,5 are arranged, in the middle of 6,7, two big olive shape convex surfaces 4,5 of two other little olive shape convex surface were sandwiched in two little olive shape convex surfaces 6,7, big olive shape convex surface 4,5 was 6: 1 with the ratio of little olive shape convex surface 6,7 sizes.What form in the pedestal back side like this is a special composite surface, and its central section presents unimodal hump shape as shown in Figure 4.When led light source was placed camera lens back side middle position, its light penetration olive shape convex surface 4,5,6,7 penetrated oval concave surface 3 again, penetrated dolioform convex surface 2 irradiations then and came out.Specifically be applied to the LED street lamp, this design department is that 30 meters street lamp is opened up and is extended down to 42 meters with general spacing, thereby reduces the street lamp quantity with required setting in equidistant, greatly reduces cost and energy consumption.

Certainly, only enumerated a kind of preferred implementation here, the protection category that other is equal to, structure roughly the same all should belong to this patent repeats no more here.

Claims (3)

1. the led light source camera lens of an improved multiple optics refraction, integral body is transparent material, include the pedestal of fixed installation usefulness, it is characterized in that: the positive protuberance of pedestal has dolioform convex surface, the pedestal back side oval concave surface that then caved inward, and on oval concave surface, be formed with the olive shape convex surface that at least one pair of is symmetric arrangement again.

2. led light source camera lens according to claim 2, its feature is characterized in that dolioform convex surface is lateral arrangement, and oval concave surface is vertical layout.

3. led light source camera lens according to claim 1 and 2 is characterized in that on the oval concave surface that the olive shape convex surface has four on the oval concave surface, two big two little, be vertical symmetric arrays.

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