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New led total reflection lens for monitoring infrared lighting at night

A total reflection and infrared lighting technology, which is applied to the components of lighting devices, lenses, lighting devices, etc., can solve the problems of low light energy utilization rate, small range of field angle change, poor lighting effect, etc., and achieve large viewing angles. Field angle change range, uniform irradiance distribution, and the effect of improving light energy utilization

Inactive Publication Date: 2014-10-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low energy utilization rate of existing infrared lighting, poor lighting effect, and small change range of viewing angle, the present invention provides a new type of LED total reflection lens for monitoring infrared lighting at night

Method used

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  • New led total reflection lens for monitoring infrared lighting at night
  • New led total reflection lens for monitoring infrared lighting at night
  • New led total reflection lens for monitoring infrared lighting at night

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Embodiment Construction

[0016] The specific implementation will be further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 to Figure 3 As shown, a new type of LED total reflection lens for monitoring infrared lighting at night, including a bottom cavity formed by a circular plane 1 and a cylindrical surface 2; the surface of the bottom cavity, three sections of tapered total reflection surface, and the upper peripheral ring A closed entity formed by the surface 6 and the upper central transmissive surface 7. The three-stage tapered total reflection surface includes a lower tapered total reflection surface 3 , a middle tapered total reflection surface 4 and an upper tapered total reflection surface 5 , and the three tapered total reflection surfaces are all free-form surfaces. The upper central transmission surface 7 is a free-form surface. A, B, and C represent the three positions of the light source.

[0018] The lens material of the present invention is PC,...

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Abstract

A novel LED total-reflection lens used for night monitoring and infrared illumination belongs to the field of semiconductor illumination. In order to solve the problems that the present infrared illumination lamp is low in efficiency for solar energy utilization, poor in illumination effect, and small in field angle change range, the invention provides the novel LED total-reflection lens used for night monitoring and infrared illumination, and the novel LED total-reflection lens includes a bottom cavity formed by a round plane and a cylindrical surface, and a sealed solid formed by the surface of the bottom cavity, a three-section taper total-reflection surface, an upper end peripheral toroidal surface and an upper end center transmission surface. The continuous zooming illumination effect is realized by adopting a graded illumination manner, and a larger field angle change range is also realized; and the total-reflection lens structure not only improves the solar energy utilization efficiency of a system, but also enables the irradiance distribution on a target surface to be evener.

Description

technical field [0001] The invention belongs to the field of semiconductor lighting, in particular to a novel LED total reflection lens for monitoring infrared lighting at night. Background technique [0002] With the continuous upgrading of the security monitoring system, people's requirements for night monitoring are gradually increasing, and the corresponding infrared auxiliary lighting equipment is required to be adjusted between the far field, the middle field and the near field, so as to meet the monitoring needs of different situations at any time, namely The zoom optical system is required to perform secondary light distribution on the infrared illumination source. [0003] Existing infrared illuminators often use traditional lenses as light distribution components. There are three main problems with this light distribution method: First, this form of light distribution can only control the central part of the beam emitted by the light source, and the large-angle be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04G02B3/06F21Y101/02
Inventor 刘华辛迪卢振武
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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