CN203147628U - Zoom Multilevel Lenses for Illumination - Google Patents

Abstract

The utility model discloses a zoom multi-layer lens for lighting, which is mainly provided with a lens body, a side surface of the lens body is provided with at least one free curved surface, a plurality of zoom curved surfaces are provided on the free curved surface, and a multi-layer zoom curved surface is formed, a side surface of the zoom curved surface is set as a beveled surface, and the other side surface of the zoom curved surface is set as an arc curved surface. In this way, the lens body is designed by a combination of multiple complex free curved surfaces, and the curved surface can be divided into multiple blocks of focus. By changing the curved surface and different focal points of each zoom curved surface, the light projection of the light source can be controlled to the required lighting brightness and irradiation angle with different change combinations, so as to achieve the required lighting effect.

Description

Zoom Multilevel Lenses for Illumination

technical field

The utility model relates to a zoom multi-level lens for lighting, in particular to controlling the brightness and angle of light source projection through several zoom curved surfaces set on the lens body, which can greatly reduce the thickness and volume of the lens body, reduce the The manufacturing cost can be reduced, and the light source can be projected farther, brighter, larger in area, and can control the light projection angle.

Background technique

Lamps that are generally used to provide lighting, such as car lights, street lights, flashlights, searchlights, etc., in order to achieve environmental protection, most of the light sources are designed with LEDs instead of light bulbs, and the projected area of the LED light source is small, such as As shown in Figure 1, most of today's lighting fixtures are equipped with a hemispherical lens 11 in front of the LED 10 and a light guide cover 12 is installed on the outer peripheral cover of the LED 10 to increase the brightness and range of the projected light, or add multiple lights in the lighting fixture. LED to increase its brightness and range, but the method of increasing the light projection of the light source is more complicated to manufacture and assemble, and the cost is higher, and can only change the distance or area of the projected light, and the light is still in the shape of a ring. Scattering reference can not change the path of light projection, so most of them form a lighting effect with brighter middle parts and darker peripheral parts. The projection distance and range of the light source are limited. The thickness of the light projection range needs to be relatively thick, and the lens has a large volume, and its cost is relatively high.

In addition, the light projection of the general lens is brighter in the middle and darker around, which cannot achieve the effect of uniform light, and it is also impossible to change the path of light projection according to the needs of the intended use, so the brightness and angle of the light cannot be controlled.

Contents of the invention

The utility model provides a zoom multi-level lens for lighting, which can solve the problems of the existing lighting lenses such as small light projection range, poor brightness, short projection distance, inability to control light projection angle, thick volume and high cost. question.

The purpose of this utility model is to provide a lighting device that can greatly reduce the thickness and volume of the lens body, reduce the cost, and achieve the effects of long light source projection, excellent brightness, large lighting area and controllable light projection angle. Zoom multi-level lens.

The zoom multi-level lens for lighting of the utility model is provided with a lens body, and at least one free curved surface is provided on one side of the lens body, and several zoom curved surfaces are arranged on the free curved surface to form a multi-layered zoom curved surface. One side of the zooming curved surface is set as a beveled surface, and the other side of the zooming curved surface is set as an arc curved surface. In this way, the lens body is designed by a combination of various complex free-form surfaces, and the curved surface can be divided into multiple blocks. Focus, and by changing the curved surface of each zoom surface and different focal points, with different combinations of changes, the light projection of the light source can be controlled to the required lighting brightness and irradiation angle to achieve the required lighting effect.

In the zoom multi-layer lens for lighting of the present invention, the other side of the lens body relative to the free-form surface is set as a flat surface.

The zoom multi-layer lens for lighting of the utility model, wherein, the number and size of the zoom curved surfaces on the free curved surface of the lens body are set to be symmetrical up and down and symmetrically left and right.

The zoom multi-layer lens for lighting of the utility model, wherein, the number and size of the zoom curved surfaces on the free curved surface of the lens body are set to be asymmetrical up and down and symmetrical to the left and right.

The zoom multi-layer lens for lighting of the utility model, wherein, the number and size of the zoom curved surfaces on the free curved surface of the lens body are arranged to be symmetrical up and down and asymmetrical to the left and right.

The zoom multi-layer lens for lighting of the utility model, wherein, the lens body is composed of more than two free curved surfaces, and each of the two or more free curved surfaces is provided with several zoom curved surfaces.

The lens body of the utility model can be installed in front of light sources (such as LEDs, bulbs, etc.) of various lamps (such as car lights, street lamps, flashlights, searchlights, etc.), which can greatly improve the lighting effect of the lamps.

Description of drawings

FIG. 1 is a schematic diagram of an existing lamp and lens.

Figure 2 is a perspective view of an embodiment of the present invention.

Fig. 3 shows the front view of the utility model embodiment.

Fig. 4 shows the side view of the utility model embodiment.

Fig. 5 shows the top view of the utility model embodiment.

FIG. 6 is a schematic diagram of light projection in a side view section of a lens body according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of light projection in a top view section of a lens body according to an embodiment of the present invention.

FIG. 8 is a diagram showing the brightness distribution of light projection according to the embodiment of the present invention.

FIG. 9 is a front view of the lens body of the present invention composed of two free-form surfaces.

Fig. 10 shows a front view in which the zoom curved surface on the lens body of the present invention is asymmetrical up and down and symmetrical left and right.

Fig. 11 shows a front view in which the zoom curved surface on the lens body of the present invention is symmetrical up and down and asymmetrical in left and right.

Explanation of reference signs: 10-LED; 11-lens; 12-light guide cover; 2-lens body; 21-free curved surface; 22-zoom curved surface; - light source; 30 - light; 4 - lens body; 41 - free form surface; 42 - zoom surface.

Detailed ways

The embodiment of the present utility model, referring to Fig. 1 to 5, is mainly provided with a lens body 2, and one side of the lens body 2 is provided with at least one free curved surface 21, and several zoom curved surfaces are arranged on the free curved surface 21 22, forming a multi-level zoom curved surface 22, one side of the zoom curved surface 22 is set as a beveled surface 220, and the other side is set as an arc surface 221, and the other side of the lens body 2 is opposite to the free curved surface 21 As the flat surface 23, in this way, it is a zoom multi-level lens for illumination.

When in use, please refer to Figures 6 to 8, the lens body 2 of the present utility model is set in front of the light source 3 (such as LED), and the light source can be changed by several zooming curved surfaces 22 set on the lens body 2. 3 the traveling path of the light 30 projected, so that the setting of several zooming curved surfaces 22 of the lens body 2 can increase the projected distance of the light source 3, increase its illumination brightness, have a large illumination area and uniform brightness, and can Controlling the light projection angle and other functions can greatly reduce the thickness and volume of the lens body 2, which can reduce the cost.

The number of free-form surfaces on the lens body described in the utility model can be designed according to the required illumination brightness. As shown in FIG. 9 , a lens body 4 can be provided with a combination of more than two free-form surfaces 41 , and each free curved surface 41 is provided with several zoom curved surfaces 42, through the setting position and quantity of the zoom curved surfaces 42 set on the lens body 4, different lighting brightness requirements can be provided, as shown in Figure 9, the The middle part of the lens body 3 has more zooming curved surfaces 42 and less on both sides, so it can present a lighting effect that the middle part is brighter and the two sides are darker; and the lens body 2 of the utility model The number and size of the zoom curved surface 22 on the free curved surface 21 can be set to be symmetrical up and down and symmetrical to the left and right, which can present uniform illumination light; the zoom curved surface 21 on the lens body 2 of the present invention can also be irregular The settings, for example: up-down asymmetry, left-right symmetry (as shown in Figure 10), or up-down symmetry, left-right asymmetry (as shown in Figure 11), can change the light projection angle, and the number of zooming curved surfaces 22 on the lens body 2 is large The parts of the zoom surface 22 can show brighter light, and the parts with a small number of zoom surfaces 22 will show darker light; the utility model utilizes the refraction characteristics of light traces, and when light enters different materials, different refractive indices will be generated. The lens The main body is a combination design of a variety of complex free-form surfaces, which can be divided into multi-block focal points, and by changing the curved surfaces of each zoom surface and different focal points, the light projection of the light source can be controlled by different changes. To the required lighting brightness and irradiation angle, to achieve the required lighting effect.

The lens body of the utility model can be installed in front of light sources (such as LEDs, bulbs, etc.) of various lamps (such as car lights, street lamps, flashlights, searchlights, etc.), which can greatly improve the lighting effect of the lamps.

In summary, the utility model has indeed achieved the expected purpose and effect, and is more ideal and practical than the existing ones. However, the above-mentioned embodiments are only specific illustrations for the preferred embodiments of the utility model However, the embodiments are not intended to limit the patent scope of the utility model, and all other equal changes and modifications that do not deviate from the technical means disclosed in the utility model should be included in the application covered by the utility model within the scope of the patent.

Claims (6)

1. A zoom multi-level lens for lighting, characterized in that, a lens body is provided, one side of the lens body is provided with at least one free curved surface, and several zoom curved surfaces are provided on the free curved surface, forming a multi-level lens. One side of the zoom curved surface is set as a beveled surface, and the other side of the zoom curved surface is set as an arc curved surface. 2 . The zoom multi-level lens for illumination according to claim 1 , wherein the other side of the lens body opposite to the free-form surface is set as a flat surface. 3 . 3. The zoom multi-level lens for illumination according to claim 1, characterized in that the number and size of the zoom curved surfaces on the free curved surface of the lens body are set to be symmetrical up and down and symmetrically left and right. 4. The zoom multi-layer lens for lighting according to claim 1, characterized in that the number and size of the zoom curved surfaces on the free curved surface of the lens body are set to be asymmetrical up and down and symmetrical to the left and right. 5. The zoom multi-level lens for lighting according to claim 1, characterized in that the number and size of the zoom curved surfaces on the free curved surface of the lens body are set to be symmetrical up and down and asymmetrical in left and right. 6. The zoom multi-level lens for lighting according to claim 1, wherein the lens body is composed of more than two free-form surfaces, and each of the two or more free-form surfaces is provided with several zoom lenses. surface.

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