Design method of LED flower-shaped illuminating lens, and lens

Abstract

The invention relates to a design method of an LED flower-shaped illuminating lens, and the lens. The design method comprises the following steps of: constructing a surface type of an inner total reflection surface; constructing surface types of light distribution surfaces; performing region division on the light distribution surface; constructing an inner surface; and construction a connecting surface. The LED flower-shaped illuminating lens comprises an inner surface, light distribution surfaces, an inner total reflection surface and a connecting surface, each region is internally provided with one of the light distribution surface, and the light distribution surface is a three-dimensional free-form surface; the surface types of the light distribution surfaces are in different sections,so that light emitted by the light source can be imaged into illumination regions in different ranges; and the lighting regions in different ranges are combined together, so that light emitted by thelight source forms petal-shaped light spots after passing through the single light distribution surface. According to the design method, various flower-shaped light spots can be formed, the cost is reduced, the light energy utilization rate is increased, the requirement for decorative lighting is met, the lens adaptability is improved, the design cost is low, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of lens design, and in particular relates to a design method of an LED flower-shaped lighting lens and the lens. Background technique [0002] Due to the characteristics of small size, long life and high luminous efficiency, LEDs are used more and more widely. At the same time, its secondary optical design technology has also been rapidly developed to meet the lighting requirements of higher performance. With the application of free-form surface technology in the design of LED secondary lenses, the production of special lighting effects according to requirements has become a key issue in LED lighting. [0003] At present, when LED light sources are used to realize decorative lighting, in order to achieve star-shaped, flower-shaped and other lighting effects, hollow diaphragms are often used to produce different shapes of light spots. In this method, most of the light emitted by the light source is blocked ...

AI Technical Summary

Problems solved by technology

For example, if you want to get a five-pointed star-shaped spot, instead of using an optical lens, you need to use multiple LEDs to divide the work and be responsible for different parts of the irradiation area with a specific spot shape. This will not only make the structure of the lamp complicated, but also cost higher.

In the prior art, glass material is used for lens processing, but it is large in size, heavy in weight, single in shape, fragile, low in production efficiency, and high in cost, so it is difficult to popularize in the short term.

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