Aberration-free continuous zooming miniature liquid core cylindrical lens system based on PDMS substrate

Abstract

The invention discloses an aberration-free continuous zooming miniature liquid core cylindrical lens system based on a PDMS substrate, which comprises a double-gluing cylindrical lens and a double-convex cylindrical lens which are embedded in the PDMS substrate, a liquid core is injected into the double-gluing cylindrical lens, the double-convex cylindrical lens is embedded in the PDMS substrate at the right side of the double-gluing cylindrical lens, and a diaphragm with the width of 2.80 mm is adhered to the left side surface of the PDMS substrate. According to the aberration-free continuous zooming miniature liquid core cylindrical lens system based on the PDMS substrate, when liquid with different refractive indexes is injected into a cylindrical lens system liquid core, the liquid refractive index n liquid is changed from 1.3330 to 1.5530, the lens system designed by the invention can realize continuous change of the back focal length from 50.882 mm to 5.857 mm, and the zoom ratio is greater than 8; in the whole liquid zooming range, the root-mean-square radius of the lens system in the Y direction of the defocused spot on the focal plane is always smaller than 11.237 [mu]m.

Description

technical field [0001] The invention relates to the technical field of zoom optical systems, in particular to an aplanatic continuous zoom miniature liquid cylindrical lens system based on a PDMS substrate. Background technique [0002] As an important optical component, adjustable focus lenses are widely used in optical fields such as optical communication, optical imaging and Lab-On-a-Chip. With the vigorous development of optical technology, traditional solid zoom devices are gradually unable to meet the increasing demands of miniaturization and integration of modern optical technology, so liquid zoom lenses have become a research hotspot in recent years. At present, the liquid zoom lenses developed at home and abroad mainly include three types: zoom lenses based on electrowetting effect, zoom lenses based on polymer dispersed liquid crystals, and liquid-filled zoom lenses. Both of the first two methods require voltage control, and the electrowetting effect requires a hi...

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Problems solved by technology

Before proposing the present invention, we tried to correct the spherical aberration of the liquid core zoom lens through the method of arranging music (Sun Licun, Pu Xiaoyun, Meng Weidong, etc., Chinese invention patent ZL 201310412166.X[P]; Licun Sun, Chao Du, Qiang Li et al. al., Asymmetric liquid-core cylindrical lens used tomeasure liquid diffusion coefficient[J], "Applied Optics", 2016, 55(8), 2011-2017), but it can only play a good role in eliminating the ball for a specific focal length value Aberration effect, once departing from the focal length, the spherical aberration increases rapidly

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