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Focusing module

A focusing and optical axis technology, applied in the field of optical modules, can solve the problems of many components of focusing modules and complex occupation of space, etc.

Inactive Publication Date: 2011-09-07
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to provide a focusing module that can easily achieve the focusing function and reduce the occupied volume in view of the defects that the focusing module components in the prior art are many and complex and occupy a large space

Method used

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Embodiment Construction

[0022] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of two preferred embodiments with accompanying drawings.

[0023] Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

[0024] refer to image 3 and Figure 4 , the first preferred embodiment of the focusing module of the present invention includes a first optical assembly 2 , a guide rail unit 3 , a first guide unit 4 and a control unit 5 .

[0025] The first optical component 2 is arranged along the optical axis L, and in this preferred embodiment, the first optical component 2 is an optical lens.

[0026] The guide rail unit 3 includes a pair of guide shafts 31 arranged parallel to the optical axis L. As shown in FIG.

[0027] The first guide unit 4 is used to guide the displacement of the first optica...

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Abstract

The invention relates to a focusing module, which comprises an optical component, a guide rail unit, a guiding unit and a control element which are arranged along an optical axis, wherein the guiding unit comprises a bearing seat for mounting the optical component, and an elastic body connected with the bearing seat; the elastic body is provided with an inside section connected with the bearing seat, an outside section and a middle control section; the control element makes displacement along a control path intersected with the optical axis; the un-deformed state of the middle control sectionis unparallel to the control path; and the control element moves from the outside section to the middle control section when moving from an initial position to a control position to force the middle control section to be deformed so as to move the optical component from an origin to a focused point along the guide rail unit. The control element slides on the elastic body to drive the optical component to move between the origin and the focused point on the guide rail unit along the optical axis, and thus linked components of the focusing module are simplified and the volume is reduced.

Description

technical field [0001] The invention relates to an optical module, in particular to a focusing module for adjusting the distance between optical components. Background technique [0002] In optical instruments such as projectors, video cameras, cameras, etc., it is often necessary to change the distance between lenses or between lenses and image sensing units to achieve zooming and focusing functions. [0003] refer to figure 1 and figure 2 , an existing focusing module 1 that can expand and contract along the optical axis L includes a zoom motor 11, a cam barrel 12 arranged along the optical axis L, a first lens group unit 13, a second lens group unit 14, and the The cam barrel 12 is coaxially arranged with a linear barrel 15 , a focus motor 16 , a lead screw 17 mounted on the focus motor 16 , a focus lens unit 18 , and an image sensing unit 19 . [0004] The first mirror group unit 13 includes a plurality of first linkage pins 131 passing through the straight-forward b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B3/02G03B3/10G02B7/04
Inventor 赵圣瑞李祖孟
Owner ASIA OPTICAL CO INC