Light emitting diode (LED) secondary optical lens

A technology of secondary optical lens and total reflection surface, applied in the direction of light source, point light source, lighting device, etc., can solve the problems affecting LED lighting performance, luminous flux attenuation, etc., to achieve high effective light energy utilization, high uniformity, Even lighting effect
CN102401319AInactive Publication Date: 2012-04-04东莞市耀富实业投资有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
东莞市耀富实业投资有限公司
Publication Date
2012-04-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a light emitting diode (LED) secondary optical lens, which is simple in structure and uniform in illumination. The LED secondary optical lens comprises an incident surface, a fully reflecting surface and an exit surface, wherein the exit surface is a cross curved surface, and the cross curved surface consists of concave surfaces which have the same structure and are in smooth transition in the horizontal direction and the vertical direction and convex surfaces which are positioned between the concave surfaces in the horizontal direction and the vertical direction and convex surfaces and are in smooth transition; and the exit surface is arranged right above the fully reflecting surface, and the fully reflecting surface has conical structure and covers the whole incident surface. The LED secondary optical lens is reasonable in structural design and good in condensation effect, forms a square light spot in an irradiation plane, is uniform in illumination, effectively restrains glare, is more uniform in illumination, and can effectively improve the utilization rate of light.
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Description

technical field

[0001] The invention relates to a secondary optical lens of an LED lamp, in particular to an LED secondary optical lens with a square light spot. Background technique

[0002] With the continuous advancement of LED manufacturing technology, compared with traditional light sources, LEDs are small in size, and can even be treated as electric light sources in many applications, which brings great convenience to the optical design of lamps. At the same time, the use of large The shading and absorption effects of light sources that occur in traditional light source lamps and lanterns do not exist. At present, the luminous efficacy of high-power white LEDs has reached 100lm / w, and the luminous efficacy of stable products is also above 90lm / w. This light effect makes it possible for LEDs to enter general lighting, especially in road lighting and other directional lighting fields that have gradually been applied. However, because the current price of LEDs is much hi...

Claims

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