Optical lens and assembling method thereof, and camera module and assembling method thereof

A technology of optical lens and assembly method, which is applied in the field of optical imaging, can solve the problems that free-form surface lenses are difficult to apply to compact camera modules, and achieve the effects of reducing distortion, improving installation accuracy, and reducing volume
CN110320625APending Publication Date: 2019-10-11NINGBO SUNNY OPOTECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO SUNNY OPOTECH CO LTD
Publication Date
2019-10-11

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Abstract

The present invention provides an optical lens. The optical lens comprises: a first lens part including at least one first lens; a second lens part including a second lens barrel and at least one second lens installed in the second lens barrel, wherein the at least one first lens and the at least one second lens commonly form an optical system capable of imaging, and each of the at least one firstlens and the at least one second lens comprises at least one free-form surface lens; and a connection medium adapted to fix the first lens part and the second lens part together. The invention also provides a corresponding assembling method of an optical lens and a camera module and an assembling method thereof. The distortion of an optical lens with a small size and a large aperture can be reduced, the total optical length of the camera module can be reduced, the problem of the poor product caused by inaccurate positioning of the free-form surface lens in the rotation direction of the lens barrel can be effectively avoided, and the installation precision of the free-form surface lens can be effectively improved.
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Description

technical field

[0001] The invention relates to the technical field of optical imaging, in particular, the invention relates to an optical lens, a camera module and an assembly method thereof. Background technique

[0002] With the popularization of mobile electronic devices, related technologies of camera modules used in mobile electronic devices to help users acquire images (such as video or images) have developed rapidly and improved rapidly, and in recent years, camera modules Groups have been widely used in many fields such as medical treatment, security, industrial production and so on.

[0003] In order to meet more and more extensive market demands, high pixel, small size, and large aperture are irreversible development trends of existing camera modules. A large aperture lens can bring a large field of view, however, this also leads to the problems of longer optical length of the lens and larger distortion of the field of view. For example, for a mobile phone lens ...

Claims

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