Zoom lens group

A zoom lens and lens group technology, which is applied in the field of zoom lens groups, can solve problems such as inconvenient use, and achieve the effect of balancing high-order aberrations, small aberrations, and good imaging effects

Pending Publication Date: 2021-07-16
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the lenses were all fixed-focus lenses, which have a fixed focal length, and usually can only shoot specific subjects, which is very inconvenient to use

Method used

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  • Zoom lens group
  • Zoom lens group
  • Zoom lens group

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0097] Such as Figures 1 to 3d As shown, the structural schematic diagrams of the zoom lens group in Embodiment 1 at the telephoto end, the intermediate end, and the telephoto end, and the chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves corresponding to each schematic diagram are respectively described.

[0098] Such as figure 1 , figure 2 and image 3 As shown, the zoom lens group includes in sequence from the object side to the image side: a first lens group G1 , a second lens group G2 , a third lens group G3 , a filter E8 and an imaging surface S17 . Among them, the first lens group G1 includes the first lens E1, the second lens group G2 includes the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4 and the fifth lens E5; the third lens group G3 includes the first lens Six lenses E6 and a seventh lens E7. The lenses are not adhered to each other, and the third lens group moves alo...

specific Embodiment 2

[0122] Such as Figure 4 to Figure 6d As shown, the structural schematic diagrams of the zoom lens group in Embodiment 2 at the telephoto end, the intermediate end, and the telephoto end, and the chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves corresponding to each schematic diagram are respectively described.

[0123] Such as Figure 4 , Figure 5 and Figure 6 As shown, the zoom lens group includes in sequence from the object side to the image side: a first lens group G1 , a second lens group G2 , a third lens group G3 , a filter E8 and an imaging surface S17 . Among them, the first lens group G1 includes the first lens E1, the second lens group G2 includes the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4 and the fifth lens E5; the third lens group G3 includes the first lens Six lenses E6 and a seventh lens E7. The lenses are not adhered to each other, and the third lens group m...

specific Embodiment 3

[0144] Such as Figures 7 to 9d As shown, the structural schematic diagrams of the zoom lens group in Embodiment 3 at the telephoto end, the intermediate end, and the telephoto end, and the chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves corresponding to each schematic diagram are respectively described.

[0145] Such as Figure 7 , Figure 8 and Figure 9 As shown, the zoom lens group includes in sequence from the object side to the image side: a first lens group G1 , a second lens group G2 , a third lens group G3 , a filter E8 and an imaging surface S17 . Among them, the first lens group G1 includes the first lens E1, the second lens group G2 includes the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4 and the fifth lens E5; the third lens group G3 includes the first lens Six lenses E6 and a seventh lens E7. The lenses are not adhered to each other, and the third lens group moves a...

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Abstract

The invention relates to a zoom lens group, and the zoom lens group sequentially comprises: from an object side to an image side along an optical axis, a first lens group which comprises a first lens; a second lens group which comprises a diaphragm, a second lens with positive focal power, a third lens, a fourth lens with negative focal power, and a fifth lens; and a third lens group which comprises a sixth lens and a seventh lens which have positive focal power; the lenses are not adhered to each other, the first lens group is fixed relative to the imaging surface, and the second lens group and the third lens group can move along the optical axis to realize continuous zooming. By adopting the structure, different lenses are distributed in different lens groups, and the focal power and the surface type of each lens are reasonably distributed, so that the lens can show a better imaging effect under different focal lengths, the zoom lens group has smaller aberration, can balance the high-order aberration of a system, is beneficial to matching of main light rays and an image surface, is suitable for being applied to portable electronic products and has wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of optical imaging equipment, and in particular relates to a zoom lens group. Background technique [0002] With the development of society, electronic products such as mobile phones and tablets have become an indispensable tool in people's lives. As a part of hardware, optical imaging modules have also attracted more and more attention. Designers have also designed according to people's needs. Lenses with various characteristics. In the past, the lenses were all fixed-focus lenses, which had a fixed focal length, and usually could only shoot specific subjects, which was very inconvenient to use. Contents of the invention [0003] The present invention aims to provide a zoom lens group with multiple lens groups. The zoom lens group is easy to use, easy to carry, and has the characteristics of good imaging quality. [0004] One aspect of the present invention provides a zoom lens group, which sequentially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/167G02B15/14
CPCG02B15/167G02B15/143
Inventor 杨泉锋戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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