Electric control continuous zoom lens, preparation method and exposure system

Abstract

The invention discloses an electric control continuous zoom lens, a preparation method and an exposure system. The electric control continuous zoom lens comprises an upper substrate and a lower substrate; the upper substrate and the lower substrate are transparent, and the upper substrate and the lower substrate are packaged through a sealing member to form a liquid crystal box; a polymer liquid crystal material is packaged in the liquid crystal box, one surface of the upper substrate and one surface of the lower substrate are electrode surfaces, the upper substrate and the lower substrate respectively take the corresponding electrode surfaces as inner surfaces, transparent conductive films are arranged on the inner surfaces, and at least one transparent conductive film on the inner surface is plated with a Fresnel zone pattern; the focal length of the polymer liquid crystal material is continuously changed by controlling the applied voltage of the electrode surface, so light beams canbe converged or diverged according to a Fresnel wave band when penetrating through the polymer liquid crystal material. The polymer liquid crystal zoom lens has the advantages of continuous zooming,high zoom capability, simple preparation and large-scale and large-area preparation.

Description

technical field [0001] The invention relates to the field of photoelectric devices, in particular to an electronically controlled continuous zoom lens, a preparation method and an exposure system. Background technique [0002] As one of the most commonly used optical components, lenses are widely used in various optical devices or experiments. With the continuous development of optoelectronics, traditional optical components are transforming towards integration and controllability. At present, in the imaging system, the focal length of the optical element is usually adjusted by mechanical movement to change the combined focal length of the combined lens. The overall system volume is relatively large, the zoom speed is slow, and the zoom capability is small, which cannot meet the requirements of today's equipment miniaturization. [0003] Subsequently, some electronically controlled zoom liquid lenses were developed. ① The invention patent with the publication number "CN1367...

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Problems solved by technology

[0004] The above two solutions significantly reduce the size of the zoom lens, but there are also disadvantages: the former has limited zoom capability, and can only zoom between 0.5 and 2 times the effective focal length, and the clear aperture is limited; the latter is complicated by electrode control. The control difficulty is relatively high, and the continuous change of the focal length cannot be realized; the common disadvantage of both is that the liquid crystal cell is filled with liquid crystal material, although the liquid crystal cell can reach a transparent state, but the response time of pure liquid crystal is relatively long, which affects the perception, while pure liquid crystal The material will also increase the response time of the electronic control of the liquid crystal cell

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