A zoom lens

By designing a lens group and an aspherical surface with specific optical parameters, a lens with a high zoom ratio is achieved, which solves the problem that lenses in the prior art are difficult to meet both long-range and close-up shooting, and is suitable for small portable devices.

CN112965227BActive Publication Date: 2024-12-31LIAONING ZHONGGUANG ELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202110373994.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-04-07
Publication Date
2024-12-31
Estimated Expiration
2041-04-07

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Abstract

The present invention relates to the field of imaging technology, and in particular to a zoom lens, comprising a first lens group with negative focal power, an aperture, a second lens group with positive focal power, a third lens group with positive focal power, a filter and an image plane, which are sequentially distributed from the object side to the image side; the first lens group, the second lens group, the third lens group, the filter and the image plane are distributed on the same optical axis; in the process of zooming from a wide-angle position to a telephoto position, the distance between the first lens group and the second lens group decreases, and the distance between the second lens group and the third lens group increases. The zoom lens of the present invention has the characteristics of miniaturization and high magnification, and is suitable for small portable electronic mobile devices.
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Citation Information

Patent Citations

  • Wide-angle zoom lens

    CN103176265A

  • Staged zoom lens

    CN112462506A

  • Zoom lens

    CN214427674U

  • Zoom lens system, imaging device and camera

    US20100328500A1