Optical lens for LED lamp and LED lamp

Abstract

The invention discloses an optical lens for an LED lamp and the LED lamp. The optical lens comprises a light guide part and a light-emitting part, the light guide part is provided with a cavity for containing a plurality of LED lamp beads, and the light guide part is provided with a first surface and a second surface which are opposite to each other. The first surface and the second surface are fully reflecting faces which can transmit light emitted by the LED lamp beads contained in the cavity to the light-emitting part in a total internal reflection mode, and the light-emitting part is provided with an exit face and emits the light transmitted by the light guide part. Compared with a traditional optical lens, the light guide part of the optical lens transmits the light emitted by the LED lamp beads to the light-emitting part, different optical requirements are met by changing the height of the light guide part and the curved surface structure of the light-emitting part, the structure is simple, the requirement for the assembling technology is low, the defect that in order to meet the optical demand, the requirement for assembling precision of the traditional optical lens is high is greatly overcome, and practical significance is achieved.

Description

technical field [0001] The invention relates to the field of optics, in particular to an optical lens for an LED lamp and the LED lamp. Background technique [0002] LED has superior characteristics such as long life, environmental protection and energy saving. At present, the use of LED as a lighting source has been vigorously promoted and applied. However, due to the Lambertian light emission characteristics of a single LED itself, it cannot meet the requirements of actual lighting for light distribution of lamps and lanterns. It is necessary to use lenses for secondary optical processing on multiple LEDs to meet the use requirements. At present, most of the lenses used in LED lamps are designed for secondary light distribution based on a single LED. The biggest defect of this method is that the light-emitting angle of LED lamps is small (less than 150 degrees), which cannot be compared with traditional incandescent lamps. Compared with the wide light distribution angle o...

AI Technical Summary

Problems solved by technology

However, due to the Lambertian light emission characteristics of a single LED itself, it cannot meet the requirements of actual lighting for light distribution of lamps and lanterns. It is necessary to use lenses for secondary optical treatment on multiple LEDs to meet the use requirements.

At present, most of the lenses used in LED lamps are designed for secondary light distribution based on a single LED. The biggest defect of this method is that the light-emitting angle of LED lamps is small (less than 150 degrees), which cannot be compared with traditional incandescent lamps. Compared with the wide light distribution angle of energy-saving lamps, it cannot meet the needs of actual use

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