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The Application of Zoom Liquid Lens

Mar 09, 2020

Compared with traditional mechanical zoom lenses, liquid zoom lenses have the characteristics of small size, fast response, low cost, and high integration. They are widely used in image acquisition, target tracking, and feature recognition. The focus adjustment method determines the performance and application of the liquid lens.

What is the liquid lens?

We know that the ideal curve of the mirror is a parabola, and the parabola with different curvatures has different focal lengths. Traditional zoom lenses achieve zooming by adjusting the distance between two lenses with a fixed focal length. Liquid lenses are currently divided into several types as technology changes. For example: reflective liquid lens-rotating mercury to obtain an ideal paraboloid; adaptive liquid camera lens-consisting of a pair of water drops, which are exposed to high-frequency sound waves to vibrate back and forth, and then change the focal length of the lens; Type liquid lens-use liquid to focus light and change the shape of liquid through different voltages to control imaging. Some use one kind of liquid, and some use two kinds of liquids that have different emissivity and cannot be fused at all.

Application of liquid lens

In simple terms, when we need to look far away and close, the lens must be like the eye, and it can automatically zoom to adapt.

For example, reading barcodes on boxes of different sizes or reading workpieces whose focal length changes with the fixed barcode reader as the conveyor moves. Especially in the case of fast and multiple zooms, the automatic zoom capability of liquid lenses is not a star or a half higher than mechanical zoom.

The principle of the electric zoom focusing lens is based on light feedback to change the shape (curvature) of the focusing lens through current, thereby changing its focal length, and supporting 2.5D and 3D laser processing functions. It is the best for laser processing systems to achieve fast Z-axis dimming control. Selection, typical application is 3D laser scanning processing / marking. And this process can be completed in microseconds. Its unique mechanism can make the system save a series of complicated mechanical structures, and become more rapid and compact. The advantages of zoom focusing lenses, whether mechanical or electric, are encouraging compared to traditional lenses. As the industry leader in electric zoom focusing lenses, we can customize it according to your requirements, including size, adjustable focus range and speed. Please tell us your requirements and we will be happy to provide you with a comprehensive solution.

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