Lens protection structure of lens focusing drive unit

Abstract

The invention discloses a lens protection structure of a lens focusing drive unit, comprising a lens, a lens driving mechanism and protective glass, wherein the lens can focus light on an image sensor for imaging; the lens driving mechanism is in a hollowed-out cylinder shape and can hold the lens for driving the lens to linearly move in an optical axis direction to focus light; and the protective glass is arranged at the lens inlet of the lens driving mechanism and is provided with a plurality of protruding baffle plates at the lens inlet for fixedly holding the protective glass, and the protective glass can protect the lens against damage caused by an external force during the assembling process or in case of the semi-finished product.

Description

technical field [0001] The invention relates to a lens protection structure of a lens focus drive device, in particular to a micro lens focus drive device, in which glass for lens protection and a positioning structure thereof are provided at the entrance of the optical axis of the lens. Background technique [0002] Due to the progress of science and technology, the volume of digital cameras has been reduced quite small, and most of the current mobile phones are equipped with the functions of digital cameras. These are all due to the modularization and miniaturization of camera lenses. Many kinds of AF drive structures. [0003] Such as figure 1 As shown, it is a three-dimensional exploded schematic diagram of a prior art lens focusing drive device, and its structure includes an upper cover 10, a bottom cover 11, a lens holder 12 and an outer frame 13, and four outer peripheries of the outer frame 13 are respectively embedded in four Magnet 14, this lens support 12 is pro...

AI Technical Summary

Problems solved by technology

[0004] Because the entrance of the lens 16 of the lens focusing drive device in the prior art is hollowed out to facilitate the screwing of the lens, generally a light-permeable flat plate is arranged on the outer cover of the camera device (such as a mobile phone or a camera) The lens (such as glass) is used to protect the lens, but it may cause the lens to be damaged or stained by external force during the assembly process of the semi-finished product. If a glass is directly installed on the lens focusing drive device to protect the lens, Not only does the semi-finished product assembly process not have any chance of damage or damage, but also the shell of the camera device does not need to be equipped with a flat lens, so as to save the cost of the camera, and thus reduce the thickness of the camera device (such as a mobile phone)

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