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Lens module

A lens module and lens group technology, applied in installation, optics, instruments, etc., can solve the problems affecting the imaging quality of the lens module, the maximum diameter of the lens, and the concentricity error of the lens.

Inactive Publication Date: 2012-10-10
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

This causes the lens to easily deviate during assembly, and the concentricity error between the lenses will inevitably affect the imaging quality of the assembled lens module
In addition, for portable electronic products, in order to meet the needs of miniaturization, the diameter is made smaller and smaller, which limits the maximum diameter of the lens that can be accommodated in the same lens barrel

Method used

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Embodiment Construction

[0010] The lens module provided by the technical solution will be described in detail below with reference to the embodiments and the accompanying drawings.

[0011] see figure 1 The lens module 100 provided by the first embodiment of the technical solution includes an outer lens barrel 10 , an inner lens barrel 20 , a first lens group 40 , a second lens group 30 , a spacer ring 50 and a filter 60 . The inner lens barrel 20 , the first lens group 40 and the filter 60 are sequentially housed in the outer lens barrel 10 along the optical axis from the object side to the image side. The diameter of the lenses in the first lens group 40 is greater than the diameter of the lenses in the second lens group 30 .

[0012] The inner lens barrel 20 engages with the outer lens barrel 10 through threads, and accommodates the second lens group 30 therein. In addition, the inner lens barrel 20 can be fixed on the inner wall of the outer lens barrel 10 by other methods such as glue dispensi...

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Abstract

The invention provides a lens module which comprises an inner lens cone, an outer lens cone, a first lens set and a second lens set. The outer lens cone sequentially contains the inner lens cone and the first lens set from the object side to the image side. The second lens set is contained in the inner lens cone. The diameter of each lens in the first lens set is larger than that of each lens in the second lens set. The lens module has high concentricity.

Description

technical field [0001] The invention relates to the field of lens modules, in particular to a lens module including lenses with different diameters. Background technique [0002] As electronic products become increasingly multifunctional, lens modules are widely used in consumer electronic products such as mobile phones, notebook computers, digital cameras, and personal digital assistants. While people are pursuing multi-functionality, they also hope that electronic products will have higher and higher imaging quality. [0003] A common lens module usually includes a lens barrel and a plurality of lenses accommodated in the lens barrel. Each lens is respectively fixed on the inner wall of the lens barrel by dispensing process. This leads to the deviation of the lens during assembly, and the concentricity error between the lenses will inevitably affect the imaging quality of the assembled lens module. In addition, for portable electronic products, in order to meet the requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02G02B7/00
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD