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Zoom lens and camera

A zoom lens and lens technology, applied in optical components, instruments, optics, etc., can solve problems such as insufficient aberration correction, and achieve the effect of high field of view, bright field of view, and large field of view

Active Publication Date: 2019-12-03
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a tendency that aberration correction at intermediate focal lengths is not sufficient by any means

Method used

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  • Zoom lens and camera
  • Zoom lens and camera
  • Zoom lens and camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] Example 1 Lens data

[0156] face number radius of curvature face spacing nd vd 1 69.44253 1.810 1.92286 18.90 2 51.04850 5.500 1.75500 52.32 3 96.08722 0.100 4 51.06771 6.281 1.75500 52.32 5 159.70587 DD[5] *6 274.86998 2.000 1.85135 40.10 *7 13.50517 8.250 8 -44.35909 1.010 1.75500 52.32 9 21.39517 4.243 1.92286 18.90 10 114.73962 0.100 11 42.34513 4.500 1.61340 44.27 12 -39.60921 1.280 13 -23.13255 1.000 1.83481 42.72 14 -56.31648 DD[14] *15 27.59432 5.480 1.68893 31.16 *16 -46.86702 2.000 17 (stop) ∞ 3.600 18 -4504.29358 1.010 1.92286 18.90 19 21.60058 6.061 1.49700 81.54 20 -22.93351 1.000 21 -32.68892 3.510 1.80610 33.27 22 -15.99815 0.800 1.61340 44.27 23 41.96404 2.750 *24 20.89777 5.401 1.63246 63.77 *25 -33.31372 DD[25] ...

Embodiment 2

[0171] Example 2 Lens data

[0172] face number radius of curvature face spacing nd vd 1 74.77155 1.810 1.92286 18.90 2 53.10639 5.500 1.75500 52.32 3 110.48687 0.100 4 49.47665 6.500 1.75500 52.32 5 166.22242 DD[5] *6 182.33261 2.000 1.85135 40.10 *7 13.34430 8.250 8 -50.15599 1.010 1.75500 52.32 9 20.71980 4.429 1.92286 18.90 10 148.70042 0.100 11 45.09775 5.061 1.74100 52.64 12 -682.75037 2.500 13 -23.22731 1.000 1.83481 42.72 14 -37.28721 DD[14] *15 27.63063 6.000 1.68893 31.16 *16 -53.66847 2.000 17 (stop) ∞ 3.600 18 161.71665 1.010 1.92286 18.90 19 20.47699 5.962 1.49700 81.54 20 -23.87360 1.000 21 -34.00409 3.510 180610 33.27 22 -16.25557 0.800 1.61340 44.27 23 39.33211 3.110 *24 20.90754 5.360 1.59271 66.97 *25 -33.47861 DD[25] ...

Embodiment 3

[0185] Example 3 Lens Data

[0186] face number radius of curvature face spacing nd vd 1 119.99678 1.790 1.92286 18.90 2 63.93730 5.522 1.75500 52.32 3 195.05992 0.100 4 59.07860 5.463 1.88300 40.76 5 192.79122 DD[5] *6 627.02735 2.000 1.85135 40.10 *7 14.59519 8.676 8 -34.35895 1.010 1.83481 42.72 9 34.35895 3.000 2.00069 25.46 10 125.80011 0.100 11 49.82939 5.309 1.80000 29.84 12 -31.71549 0.740 13 -23.97541 1.000 1.72916 54.68 14 -55.46402 DD[14] *15 31.23616 3.860 1.68893 31.16 16 -86.11797 3.019 17 (stop) ∞ 3.350 18 70.00056 0.850 1.92286 18.90 19 21.26715 5.639 1.49700 81.54 20 -31.67454 1.500 21 -36.77591 3.587 1.80100 34.97 22 -16.15989 0.800 1.61340 44.27 23 36.11698 5.478 *24 22.66252 5.181 1.61881 63.85 *25 -31.77612 DD[25] 2...

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Abstract

The present invention provides a zoom lens with a large angle of view at the wide-angle end, a small F-number in the entire zoom area, and well-corrected various aberrations, and an imaging device including the zoom lens. The zoom lens consists of a positive first lens group (G1), a negative second lens group (G2), a positive third lens group (G3), a negative fourth lens group (G4), and The positive fifth lens group (G5) constitutes. When zooming from the wide-angle end to the telephoto end, the distance between the first and second lens groups is always widened, and the distance between the second and third lens groups is The interval is always narrowed, the interval between the third and fourth lens groups is always changed, the interval between the fourth and fifth lens groups is always widened, and the first lens group (G1) is sequentially changed from negative to positive from the object side. The second lens group is composed of negative, negative, positive, positive, and negative lenses in sequence from the object side, and the fifth lens group is composed of one lens component.

Description

technical field [0001] The present invention relates to a zoom lens particularly suitable for a digital camera, a lens interchangeable digital camera, a camera for cinematography, and the like, and an imaging device including the zoom lens. Background technique [0002] The lenses described in Patent Documents 1 to 4 are known as five-unit zoom lenses used in digital cameras, interchangeable lens digital cameras, cinematography cameras, and the like. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2003-287681 [0005] Patent Document 2: Japanese Patent Laid-Open No. 61-286813 [0006] Patent Document 3: Japanese Patent Laid-Open No. 2014-102526 [0007] Patent Document 4: Japanese Patent Laid-Open No. 2013-182246 [0008] In recent years, digital cameras, digital cameras with interchangeable lenses, cameras for cinematography, etc. have been increasing in pixel size, and zoom lenses used in these cameras are also required to respon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/16
CPCG02B15/16G02B15/163G02B15/20G02B15/145121G02B27/646G02B15/14
Inventor 野田大雅富冈领子长伦生
Owner FUJIFILM CORP
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