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Why LED lamps use Fresnel lens
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Why LED lamps use Fresnel lens

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[Abstract]:
IftheLEDlamplenscomponentismadeofopticalglass,itisexpensivetomanufactureandfragile.Ifthethicknessofthecomponentcanbereduced,orevenasheetlens,thesizeoftheopticalcomponentcanbereduced,therebyreducingthe

If the LED lamp lens component is made of optical glass, it is expensive to manufacture and fragile. If the thickness of the component can be reduced, or even a sheet lens, the size of the optical component can be reduced, thereby reducing the size of the lamp or other device. It also saves materials and reduces costs. As the thickness is reduced, the light absorption is also reduced, and the efficiency of the luminaire or instrument is also increased. Therefore, making high-quality sheet-shaped optical parts has always been one of the goals pursued by optical design.

Fresnel lens is a thin film lens. It has been used in some fields because of its light, thin, low cost, arbitrary shape cutting, excellent light transmittance, light and easy to carry. Good application. In the field of LED lamps, it is widely used in various lamps such as downlights, spotlights, wall washers, and stage lamps.

LEDs are small in size, but most of the LED lenses on the market are thicker than 10mm, which is a fatal problem for LEDs in some applications, although Fresnel lenses can be used to reduce the thickness of the lens and reduce light absorption. But how to make accurate optical design is rarely seen. However, accurate ultra-thin zigzag lenses can be achieved with good optical quality and high light utilization. Zigzag lenses have a wider range of adaptability, ie they can be adapted to different application conditions and different processing conditions. Yuying can design the size of the LED lens according to the customer's needs, and the light extraction angle can be adjusted to reduce the cost of mold opening. Precision machine tool processing for accurate light transmission.

This zigzag lens is suitable for secondary optical lenses in which the LED is a light source. For a small-sized light source such as an LED, it is very meaningful to have a small and thin optical lens. The zigzag lens moves in the direction of the light while scaling, resulting in higher efficiency. LED light sources with small light source scales can achieve good results.