A large target surface shutter front scanning code imaging assembly based on liquid lens focusing

CN117233942BActive Publication Date: 2026-07-24FUJIAN NEWLAND AUTO ID TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUJIAN NEWLAND AUTO ID TECH CO LTD
Filing Date
2023-10-26
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing liquid lens imaging components suffer from problems such as high production difficulty, low pixel count, and difficulty in inspection in the industrial field. In particular, the liquid lens is implanted in the middle of a fixed-focus lens, which increases the tolerance and makes it impossible to image when not installed.

Method used

Design a large target surface aperture front scanning imaging component based on liquid lens adjustable focus. The liquid lens, wire, aperture and multiple lenses are arranged sequentially from the front end to the rear end of the lens barrel. Focusing is achieved by electrically connecting the liquid lens to an external controller to meet specific optical power and curvature conditions. Dynamic focusing is achieved by using liquid lens with electro-wetting drive principle.

Benefits of technology

It achieves high-quality large target surface imaging, with increased pixel count, controlled distortion, and significant aberration and field curvature correction effects. It is compatible with 1/1.8-inch large target surface sensors, and the overall performance of the imaging components is improved.

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Abstract

The present application relates to a kind of code scanning imaging components, specifically, a kind of large target surface diaphragm front code scanning imaging component based on liquid lens adjustable focus, comprising: liquid lens, wire, diaphragm, first meniscus lens, first planoconvex lens, double concave lens, planoconcave lens, double convex lens, second planoconvex lens, second meniscus lens, the refractive power between each device meets the following conditions simultaneously:‑3<(φ1+φ3) / (φ2+φ4)<‑1;‑3<(φ3+φ5) / (φ4+φ6)<‑1;‑2<(φ1+φ2+φ5+φ6) / (φ3+φ4+φ7)<‑0.5.Double convex lens, second planoconvex lens, second meniscus lens play a good role in eliminating aberration and correcting field curvature;First meniscus lens and first planoconvex lens are matched to eliminate wavefront aberration generated by liquid lens;Double concave lens and planoconcave lens effectively modulate the dense light at the front diaphragm of imaging component, so that the situation that large-angle light grazing incidence lens does not appear in large target surface imaging imaging component with diaphragm front.
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Citation Information

Patent Citations

  • Automatic focusing lens combination

    CN105319665A

  • Small-sized photographic optical system using liquid lens for internal focusing

    CN201527509U

  • Liquid zoom group

    CN207718066U

  • Automatic focusing lens with front liquid lens assembly for scanning

    CN209946515U

  • 1'' target surface SWIR3514 high-performance short wave infrared lens

    CN105807401A