Aligning device of zoom lens tube

A technology of zoom lens and core adjustment, which is applied in the direction of installation, color TV parts, TV system parts, etc. It can solve the problems of unsatisfactory optical performance, large-scale lens barrel, and increased number of parts, so as to shorten the working time time, avoid oversizing, and avoid the effect of radial oversizing

Inactive Publication Date: 2010-09-29
JIEXIDI OPTICS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to make the zoom lens small and high-performance, the optical sensitivity of the relative positional relationship between each lens, lens group, and lens group that constitutes the zoom lens will increase in design. Therefore, in the past, the lens was simply embedded in the lens barrel. The structure has been unable to meet the required optical performance
[0004] Therefore, someone has proposed a method of adjusting the centering method to obtain the desired optical performance by adjusting the relative positional relationship between each lens in the lens group or adjusting the relative positional relationship between each lens group among multiple lens groups. , but a mechanism for aligning is required, resulting in problems of enlarging the lens barrel and increasing the number of parts

Method used

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  • Aligning device of zoom lens tube
  • Aligning device of zoom lens tube
  • Aligning device of zoom lens tube

Examples

Experimental program
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Embodiment Construction

[0017] Hereinafter, an example in which the present invention is applied to an internal focusing type zoom lens barrel for zooming with four groups of lenses will be described.

[0018] (1) The overall structure of the lens barrel

[0019] figure 1 A cross-sectional view showing the optical axis of an internal focus type zoom lens barrel that zooms with four lenses. figure 1 The optical system in is composed of the first lens group 1, the second lens group 2, the third lens group 3, and the fourth lens group 4. The above-mentioned first lens group 1 includes three lenses L1, L2, and L3. The above-mentioned second lens Group 2 includes three lenses L4, L5 and L6, the third lens group 3 includes two lenses L7 and L8, and the fourth lens group 4 includes four lenses L9, L10, L11 and L12. Furthermore, the first lens group 1 is stored and held in the front lens barrel 5 , while the second lens group 2 , the third lens group 3 , and the fourth lens group 4 are stored in the rear l...

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Abstract

The invention provides an aligning device of a zoom lens tube, which is a small-sized aligning device with high performance for a zoom lens tube assembled into a camera, a vidicon, a mobile phone and the like. A lens group at the forefront of a zoom lens comprising sets of lens groups moves opposite to a lens group at the back of the zoom lens along the direction perpendicular to the optical axis, and a force is applied to the lens group at the forefront of the zoom lens in the direction of the optical axis by a circular elastic member with approximately same diameter with the lens group at the forefront of the zoom lens, thereby avoiding enlarging the lens tube and being capable of aligning by using a simple structure.

Description

technical field [0001] The present invention provides a compact and high-performance alignment device for zoom lens barrels incorporated in cameras, video cameras, mobile phones, etc. Background technique [0002] In recent years, digital cameras, digital video cameras, and the like have become smaller and more functional, and accordingly, zoom lenses used in these cameras have been required to be smaller and more functional. [0003] In order to make the zoom lens compact and high-performance, the optical sensitivity of the relative positional relationship between the lenses, lens groups and lens groups that constitute the zoom lens will increase in design. Therefore, the conventional lens is simply embedded in the lens barrel. The structure has been unable to meet the required optical performance. [0004] Therefore, someone has proposed a method of adjusting the centering method to obtain the desired optical performance by adjusting the relative positional relationship b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/10H04N5/225
Inventor 若林央加纳健博
Owner JIEXIDI OPTICS
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