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Lens module

A lens module and lens barrel technology, applied in installation, optics, instruments, etc., can solve the problem of large size of the lens module, and achieve the effect of small size and reduced eccentricity

Inactive Publication Date: 2012-05-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the lens module needs a larger housing space to accommodate the coil, magnet, elastic structure and drive unit, so that the volume of the entire lens module is larger; in addition, the deformation of the elastic structure is used to adjust the lens module The focal length of the lens barrel will cause eccentricity between the lens barrel and the lens barrel ring during the movement

Method used

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] see figure 1 and figure 2 The lens module 10 provided by the first embodiment of the present invention includes a lens barrel 11 , a lens barrel ring 12 , a lens mount 13 , a first lens 14 , a second lens 15 and an image sensor 16 .

[0014] The first lens 14 and the second lens 15 are accommodated in the lens barrel 11 . The lens barrel 11 includes a cylindrical body 120 and an edge portion 110 , one end of the body 120 extends away from the central axis L of the body 120 to form the edge portion 110 , and the lens barrel 11 is made of plastic.

[0015] The edge portion 110 has a first surface 111 and a second surface 112 opposite to each other. A plurality of accommodating grooves 114 for fixing the MEMS driving unit 17 are disposed on the first surface 111 , two in this embodiment. The second surface 112 protrudes to form two latches 113 , and ...

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Abstract

The invention discloses a lens module, which comprises a cylindrical lens barrel, a lens accommodated in the lens barrel, a lens barrel ring surrounding the lens barrel and a lens seat with a through hole, wherein the inner wall of the through hole is provided with internal thread; the inner wall of the lens barrel ring is provided with a plurality of circular grooves which are parallelly arranged; the outer wall of the lens barrel is convexly provided with at least two clamp plugs which have the same distance to the central shaft of the lens barrel; the clamp plugs are clamped in the groovesand fix the lens barrel in the lens barrel ring; the outer surface of the lens barrel ring is provided with external thread; and the lens barrel ring is accommodated in the lens seat through the internal thread and the external thread.

Description

technical field [0001] The invention relates to a lens module, in particular to a lens module with small volume and reduced eccentricity during the movement of the lens barrel. Background technique [0002] In order to achieve the zoom and focus functions, the optical module of the digital camera needs to drive the lens to move to achieve the purpose of zoom and focus. [0003] At present, there are many ways to focus and zoom, such as mechanical focus and zoom lens using stepping motor or servo motor as the power source, or using the principle of magnetic field interaction for focusing and zooming. Although these methods have relatively mature precise positioning technology, such zoom and focus lenses generally require quite a lot of precise mechanical transmission mechanisms. Not only is the mechanical structure complex, but it also has the disadvantages of cumbersome assembly steps, large volume and high cost, as well as the disadvantages of high power consumption and no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02G02B7/04
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD