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Zoom lens and image pickup apparatus

A zoom lens and lens technology, applied in the field of zoom lens, can solve the problem of high difficulty level of zoom lens

Pending Publication Date: 2022-04-15
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the level of difficulty in manufacturing each zoom lens is high

Method used

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  • Zoom lens and image pickup apparatus
  • Zoom lens and image pickup apparatus
  • Zoom lens and image pickup apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0120] Unit: mm

[0121] Surface data

[0122] | f | = 16.45-27.50f / 2.88-2.88 (°) = 52.7-46.4

[0123]

[0124]

[0125] Aspherical data (A4, B6, C8, D10, E12, F16)

[0126] Surface 5

[0127] R = 1.86002e + 001 k = -6.34869E-001 a = -6.48612E-009 c = -2.39986E-011 D = 6.99611E-014 E = -1.79260E-016 f = 4.77894 E-022

[0128] Surface 24

[0129]r=-1.00000e+003 K=0.00000e+000 A=-1.47459e-004 B=9.59827e-007 C=-2.80979e-009 D=2.71484e-012 E=6.18596e-015 F=0.00000e+000

[0130] 表面25

[0131] r=6.00000e+001 K=0.00000e+000 A=-1.22418e-004 B=9.83492e-007 C=-3.30364e-009 D=5.32196e-012 E=0.00000e+000 F=0.00000e+000

[0132] 各种数据

[0133]

[0134]

[0135] 单元距离数据

[0136]

[0137] 单元数据

[0138]

example 2

[0140] 单位:mm

[0141] 表面数据

[0142] |f|=15.40-27.50F / 2.88-4.04 (°)=54.5-46.4

[0143]

[0144]

[0145] 非球面数据(A4,B6,C8,D10,E12,F16)

[0146] 表面5

[0147] r=1.40645e+001 K=-7.15928e-001 A=-6.98900e-006 B=-1.80701e-008 C=4.31189e-011 D=-7.79229e-013 E=3.11218e-015 F=-6.08887e-018

[0148] 表面24

[0149] r=-1.00000e+003 K=0.00000e+000 A=-1.97496e-004 B=1.33923e-006 C=-3.21312e-009 D=1.49212e-012 E=9.18149e-015 F=0.00000e+000

[0150] 表面25

[0151] r=6.13808e+001 K=0.00000e+000 A=-1.60528e-004 B=1.42133e-006 C=-4.73468e-009 D=7.84324e-012 E=0.00000e+000 F=0.00000e+000

[0152] 各种数据

[0153]

[0154] 单元距离数据

[0155]

[0156] 单元数据

[0157]

example 3

[0159] 单位:mm

[0160] 表面数据

[0161] |f|=15.40-27.50F / 2.88-4.04 (°)=54.5-46.4

[0162]

[0163]

[0164] 非球面数据(A4,B6,C8,D10,E12,F16)

[0165] 表面5

[0166] r=1.40495e+001 K=-6.90022e-001 A=-8.65412e-006 B=-3.10402e-008 C=1.43329e-011 D=1.59117e-013 E=-2.23934e-015 F=3.71371e-018

[0167] 表面25

[0168] r=-1.00000e+003 K=0.00000e+000 A=-1.68718e-004 B=8.57269e-007 C=-1.07815e-009 D=3.98433e-012 E=-2.18389e-014 F=0.00000e+000

[0169] 表面26

[0170] r=9.75488e+001 K=0.00000e+000 A=-1.32827e-004 B=9.08042e-007 C=-1.58849e-009 D=9.69538e-013 E=0.00000e+000 F=0.00000e+000

[0171] 各种数据

[0172] 单元距离数据

[0173]

[0174] 单元数据

[0175]

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PUM

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Abstract

The invention relates to a zoom lens and an image pickup apparatus. The zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, a fourth lens unit having a negative refractive power, and a rear lens unit having a positive refractive power and disposed closest to an image plane. During zooming from the wide-angle end to the telephoto end, the second lens unit moves toward the object side, and each distance between adjacent lens units varies. Predetermined conditions are met.

Description

Technical field [0001] Aspects of embodiments relate to zoom lenses used in image pickup devices such as digital cameras or video cameras. Background technique [0002] Japanese Patent Application Publication No. ("JP") 2016-118658 discloses a zoom lens including negative first lens unit, a positive second lens unit, a negative third lens unit, a negative fourth lens unit And a positive fifth lens unit. JP 2019-066654 discloses a zoom lens including a negative first lens unit, a positive second lens unit, a negative third lens unit, and a negative fourth lens unit. Both zoom lenses are wide-angle lenses of the half-angle ω greater than 35 °, but in particular in the wide-angle lens, well correction distortion and field songs are well correlated. [0003] Each of the zoom lenses disclosed in JP 2016-118658 and JP 2019-066654 is used in each of the first lens unit and the second lens unit, a non-spherical lens having a large thickness unevenness and a large aperture diameter In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/14G02B1/00
CPCG02B15/145519G02B15/1465G02B13/02G02B13/06G02B27/0025H04N23/60
Inventor 市村纯也
Owner CANON KK