Surface type analytical methodbased onaspherical lens of three-layer liquid structure

Abstract

The invention provides a surface type analytical methodbased on an aspherical lens of a three-layer liquid structure. The surface type analytical method comprises the steps that first, an aspherical lens structure model of the three-layer liquid structure is established; second, the changing situation of liquid surface type of the aspherical lens structure model at applied voltage is emulated; third, a surface type numerical value obtained from model emulation is fitted by emulation software into an aspherical surface type function to obtain a corresponding aspherical coefficient; and fourth,the applied voltage is changed, the aspherical coefficient under different voltage and the corresponding relation of the voltage are fitted into function, and the aspherical coefficient and the corresponding relation of the applied voltage are drawn into a curve chart. The surface type analytical method is based on establishment of the three-layer liquid lens structure, by fitting thesurface typeinto theasphericalfunction, multiple groups of the numerical values of the aspherical coefficient under the different voltage are calculated and fitted into the function, then drawn into the curve chart, and concrete analysis of the aspherical surface type is achieved through the curve chart.

Description

technical field [0001] The invention relates to a method for analyzing the aspherical surface type applicable to liquid lenses, in particular to a method for analyzing the surface type of aspheric surface lenses based on a three-layer liquid structure, and belongs to the field of optical technology. Background technique [0002] With the development of optical technology, the application range of zoom lens system is getting wider and wider. The complex application occasions make it more and more difficult for traditional solid lenses to adapt. Liquid lenses are not limited to spherical mirrors because of their adjustable focus. Low and many other advantages are widely used. Liquid lenses use liquid as a lens to change the focal length by changing the curvature of the liquid. The relatively mature liquid lens is a variable focus optical lens that uses the principle of electrowetting on a medium (EWOD). The shape of the droplet is changed by applying an external voltage, and t...

AI Technical Summary

Problems solved by technology

However, in the actual process, due to the complex surface shape of the aspheric surface, it is difficult to intuitively understand the structure of the lens through a few parameters like a solid spherical lens. In addition, when designing an aspheric lens, there is no external voltage. The basis for adjustment, and it is impossible to understand the influence of the applied voltage on the thickness of the liquid lens, the diameter of the light passing through and other parameters in detail.

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