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Fresnel lens and lamp with same

A Fresnel lens and lens technology, applied in the field of Fresnel lenses and lamps using the Fresnel lens, can solve the problems of increasing the difficulty of installation design, the large space occupied by the lens, and the consumption of manufacturing materials, etc., to achieve the goal of lamps Effects of volume reduction, cost reduction, lens volume reduction and space occupation

Inactive Publication Date: 2012-07-04
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a single refraction concave surface will cause the thickness of the lens to be too large (generally greater than 10mm), which will make the lens occupy a large space, incre

Method used

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  • Fresnel lens and lamp with same
  • Fresnel lens and lamp with same
  • Fresnel lens and lamp with same

Examples

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] The Fresnel lens includes an incident surface and a refraction concave surface opposite to the incident surface. The refraction concave surface is divided by a plurality of concentric ring grooves. The outer sidewall of the shaft, the inner sidewall of the annular groove are perpendicular to the incident surface, and the outer sidewall of the annular groove is inclined towards the optical axis of the lens. The radius of curvature of the outer wall of the circular groove increases successively with a fixed value.

[0025] figure 1 It is an axial sectional view of the Fresnel lens structure in one embodiment. figure 2 is a rear view of the Fresnel lens structure in one embodiment. image 3 is a side view of the Fresnel lens structure in one embodiment.

[0026] to combine Figure 1 to Figure 3 , the Fresnel lens inclu...

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Abstract

The invention relates to a Fresnel lens and a lamp with the same. The Fresnel lens comprises an incident surface and a concave refracting surface opposite to the incident surface, and is characterized in that: the concave refracting surface is formed by dividing a plurality of concentrically-formed annular grooves; each annular groove comprises an inner side wall close to an optical axis of the lens and an outer side wall far away from the optical axis of the lens; the inner side wall of each annular groove is vertical to the incident surface; and the outer side wall of each annular groove is inclined to the optical axis of the lens. The concave refracting surface is formed by dividing the concentrically-formed annular grooves and is not a single concave refracting surface, so that the thickness, volume and occupied space of the lens are greatly reduced, the volume of the lamp with the lens is also greatly reduced, installation and design difficulty is reduced, manufacturing materials are saved, and waste and cost are reduced; and meanwhile, after parallel light is emitted by the Fresnel lens, a floodlight illumination beam with a half-intensity angle of about 40 degrees is generated for floodlight illumination.

Description

【Technical field】 [0001] The invention relates to an optical lens, in particular to a Fresnel lens and a lamp using the Fresnel lens. 【Background technique】 [0002] At present, when a lamp is used for flood lighting, it is necessary to use a Fresnel lens to convert the light beam into a flood light beam. [0003] A traditional Fresnel lens has an incident surface and a single refracting concave surface (usually a concave surface). However, a single refraction concave surface will cause the thickness of the lens to be too large (generally greater than 10mm), which will make the lens occupy a large space, increase the difficulty of installation design, and cause the lamps using the flood lens to be too bulky and consume too much manufacturing. materials, causing waste and increasing costs. 【Content of invention】 [0004] In view of this, it is necessary to provide a Fresnel lens with a small thickness. [0005] In addition, a luminaire using the above-mentioned Fresnel l...

Claims

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Application Information

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IPC IPC(8): F21V5/04
Inventor 周明杰方敏
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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