Liquid-crystal lens system and forming method

Abstract

The present invention relates to a liquid crystal lens system, which comprises a liquid crystal panel with a plurality of pixels, the liquid crystal panel is formed with a Fresnel concentric annular band diffraction fringe pattern, and the Fresnel concentric annular band diffraction fringe pattern is formed by the composed of pixels. The pattern on the liquid crystal panel is controlled and adjusted by a processor and a control circuit, so that it presents a variable Fresnel concentric annular band diffraction fringe pattern, thereby becoming a diffractive lens with adjustable focal length. The liquid crystal lens system has the advantages of simple structure, low cost, large focal length range, and can realize the functions of eccentricity compensation and beam shaping by adjusting the pattern on the liquid crystal panel. The present invention also relates to a method for forming a liquid crystal lens.

Description

【Technical field】

[0001] The invention relates to an optical lens, in particular to a liquid crystal lens system. 【Background technique】

[0002] Lenses are basic optical components that can be found everywhere in optical instruments and equipment. With the development of optical technology, the requirements for lenses are getting higher and higher: continuously variable focal length of lenses, lenses with large focal lengths, and small aberrations. Either way, meeting the requirements will make the optical system large and complex.

[0003] Microlens is also an important optical device. At present, the traditional manufacturing methods mainly include particle exchange method, compression molding method, photosensitive glass thermoforming method and photoresist thermoforming method. Due to the limitations of the materials used and the traditional technology, the microlenses made by these methods have a common feature, that is, the lens has only one focal length. To obtain...

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