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Zoom lens

A zoom lens and lens technology, applied in the field of zoom lenses, can solve the problems of low imaging resolution, small imaging surface, and large number of lenses

Pending Publication Date: 2022-02-18
DONGGUAN YUTONG OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]However, there are still many deficiencies in the zoom lenses used in security monitoring, drone aerial photography and other fields on the market, such as a large number of lenses, low imaging resolution, and Face is small, volume is large, etc., so it needs to be improved

Method used

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Examples

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Embodiment Construction

[0042] The present invention is further detailed below with reference to the accompanying drawings and examples. It will be appreciated that the specific embodiments described herein are merely illustrative of the invention and are not limited thereto. It will also be also to be described, and only the parts associated with the present invention are shown in the drawings rather than all structures.

[0043] The terms used in the embodiments of the present invention are for the purpose of describing particular embodiments, not intended to limit the invention. It should be noted that "upper", "lower", "left", "right" or equal correspondence of the present invention will be described by the angle shown in the drawings, and should not be understood to be implemented to the present invention. Limitation of example. Further, in the context, it is also understood that when a component is mentioned in another element "on" or "down", it can not only be directly formed in another element ",...

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Abstract

The embodiment of the invention discloses a zoom lens. The zoom lens comprises a first lens group with positive focal power, a second lens group with negative focal power, a third lens group with positive focal power and a fourth lens group with positive focal power which are sequentially arranged from an object space to an image space along an optical axis, wherein the second lens group and the third lens group reciprocate along the optical axis during zooming; the first lens group comprises a first lens and a second lens, the second lens group comprises a third lens, a fourth lens and a fifth lens, the third lens group comprises a sixth lens, a seventh lens and an eighth lens, and the fourth lens group comprises a ninth lens and a tenth lens; and the zoom lens also includes a diaphragm which is positioned between the sixth lens and the seventh lens. According to the scheme provided by the embodiment of the invention, the high-performance zoom lens with the diagonal field angle from about 10 degrees to 50 degrees under the 1 / 2 inch CMOS target surface can be realized, and the imaging requirement can be met when the zoom lens is used in the environment of-40 DEG C to 80 DEG C.

Description

Technical field [0001] Embodiments of the present invention relate to lens techniques, and more particularly to a zoom lens. Background technique [0002] With the continuous development of society and the continuous improvement of science and technology, the optical imaging lens has also been rapidly developed, and the optical imaging lens is widely used in video conferencing, security monitoring, car monitoring, drone aerial photography, smart transportation, etc. each field. [0003] Due to the fixed angle of view of the fixed-focus lens, a product can only be applied to a specific scene, resulting in a number of fixed-focus lenses that cannot meet usage requirements in many scenarios. The zoom lens can change the shooting range by fluctuating the focal length without changing the shooting distance, so it is increasingly widely used. [0004] However, there are still many deficiencies in the market for security monitoring, drone aerial photography, such as many lenses, low ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/173
CPCG02B15/173
Inventor 张磊刘峥嵘张占军金永红
Owner DONGGUAN YUTONG OPTICAL TECH