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Zoom lens and imaging apparatus

A zoom lens and image technology, applied in optics, instruments, cameras, etc., can solve problems such as image blur

Inactive Publication Date: 2009-07-22
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the other hand, due to the adverse effects of imaging devices with reduced thickness and imaging devices with a large number of pixels, the problem of image blur is prone to occur in the process of capturing images

Method used

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  • Zoom lens and imaging apparatus
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  • Zoom lens and imaging apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 3

[0143] Conditional expression (1) -0.134 -0.180 -0.230

[0144] Conditional expression (2) 44.900 100.047 44.900

[0145] Conditional expression (3) 2.001 1.950 2.001

[0146] Conditional expression (4) 0.623 0.554 0.721

[0147] Conditional expression (5) 0.401 0.364 0.401

[0148] It can also be clearly seen from Table 10 that the zoom lenses 1 to 3 of the numerical examples 1 to 3 satisfy conditional expressions (1) to (5). In addition, as shown in the aberration diagram, each aberration is balanced at the short focal length end, at the intermediate focal length between the short focal length end and the long focal length end, and at the long focal length end while keeping the camera stable. compensation.

[0149] Next, an imaging device according to an embodiment of the present invention will be described.

[0150] An imaging device according to an embodiment of the present invention is an imaging device including a zoom lens, and an imaging device that converts an op...

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Abstract

A zoom lens includes a plurality of lens groups, and changes magnification by changing the distance between the lens groups, wherein the last lens group located at a position closest to an image side includes a negative element group having a negative refractive power, and adjacent to the image side Set and have a positive component group with a positive refractive power, wherein the positive component group moves the image by moving in a direction perpendicular to the optical axis, and satisfies the conditional formulas (1) and (2): -0.30<fgn / (Ngn fT )<-0.05 (1), νgn-νgis>30 (2). where fgn is the focal length of the negative component group, Ngn is the average refractive index of the negative component group, fT is the focal length of the entire system at the telephoto end, νgn is the resultant Abbe number of the negative part group, and νgis is the resultant Abbe number of the positive part group shell number.

Description

[0001] Cross References to Related Applications [0002] The present application contains subject matter related to Japanese Patent Applications JP 2006-130531 and JP 2006-164904 filed in the Japan Patent Office on May 9, 2006 and June 14, 2006, respectively, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to inventive zoom lenses and imaging devices. More particularly, the present invention relates to a small-sized stabilized zoom lens having a magnification of about 4× or more suitable for a compact digital camera, and an imaging device using the stabilized zoom lens. Background technique [0004] In recent years, imaging apparatuses such as digital cameras using solid-state imaging devices have become common. With the widespread use of such digital cameras, there is a need to create higher quality images. Especially in a digital camera having a large number of pixels, there is a need for a photogr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/16G02B9/60G03B5/00
Inventor 黑田大介
Owner SONY CORP
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