Zoom lens and camera

A zoom lens and lens technology, applied in the direction of instruments, optics, diffraction grating, etc., can solve the problems of large F value and insufficient aberration correction

Active Publication Date: 2019-11-05
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the zoom lenses of Patent Documents 1 to 3 all have large F-numbers on the telephoto side, and the correction of various aberrations is insufficient.

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

[0149] Example 1 Lens data

[0150] face number radius of curvature face spacing nd vd 1 86.20982 2.210 1.84666 23.78 2 54.35200 6.000 1.61800 63.33 3 139.31177 0.100 4 53.19269 6.340 1.75500 52.32 5 200.56627 DD[5] *6 141.91654 1.400 1.85135 40.10 *7 13.47772 8.570 8 -32.15762 1.010 1.69680 55.53 9 17.98900 7.500 1.90366 31.31 10 -39.71555 1.380 11 -21.64392 1.000 1.72916 54.68 12 -56.68875 DD[12] *13 27.66531 4.000 1.68458 30.88 *14 -787.32682 2.000 15 (aperture stop) ∞ 3.440 16 35.85993 1.010 1.84666 23.78 17 15.92500 6.280 1.53775 74.70 18 -48.19335 0.500 19 396.51587 3.510 1.49700 81.54 20 -39.57800 0.800 1.79952 42.22 21 31.95551 1.810 *22 20.62352 5.760 1.61882 63.58 *23 -26.89463 DD[23] 24 ∞ 0.800 1.61800 63.33 25 22.13057 2.050 ...

Embodiment 2

[0165] Example 2 Lens data

[0166] face number radius of curvature face spacing nd vd 1 69.44254 1.810 1.84661 23.88 2 48.31867 6.000 1.61800 63.33 3 95.72888 0.100 4 49.20902 6.512 1.75500 52.32 5 154.36104 DD[5] *6 166.66082 2.000 1.85135 40.10 *7 12.87033 8.647 8 -37.26424 1.010 1.69680 55.53 9 16.63285 7.779 1.90366 31.31 10 -47.15324 1.412 11 -23.28964 1.000 1.72916 54.68 12 -53.90192 DD[12] *13 32.79803 4.000 1.68893 31.16 *14 -435.72457 2.000 15 (aperture stop) ∞ 3.250 16 25.23382 1.010 1.92286 18.90 17 17.17597 6.399 1.49700 81.54 18 -36.90322 0.500 19 -105.78645 3510 1.49700 81.54 20 -20.26114 0.800 1.79952 42.22 21 27.63093 1.254 *22 18.78974 6.322 1.62087 63.88 *23 -21.61987 DD[23] 24 972.23964 0.800 1.61800 63.33 25 21.08780 1.955 ...

Embodiment 3

[0179] Example 3 Lens data

[0180] face number radius of curvature face spacing nd vd 1 76.44802 1.810 1.84661 23.88 2 51.56054 6.024 1.61800 63.33 3 119.04201 0.100 4 55.79377 6.072 1.75500 52.32 5 205.02447 DD[5] *6 151.44478 2.000 1.85135 40.10 *7 13.37604 8.454 8 -37.83715 1.010 1.69680 55.53 9 17.12431 7.893 1.90366 31.31 10 -41.50609 1.205 11 -23.85142 1.000 1.72916 54.68 12 -96.38918 DD[12] *13 30.53747 4.000 1.68893 31.16 *14 -577.09433 2.000 15 (aperture stop) ∞ 3.652 16 30.40620 1.010 1.92286 18.90 17 19.31761 6.246 1.49700 81.54 18 -33.00050 0.500 19 -422.28074 3510 1.49700 81.54 20 -23.67547 0.800 1.79952 42.22 21 31.29122 1.671 *22 19.74958 5.839 1.62087 63.88 *23 -26.27159 DD[23] 24 -736.81576 0.800 1.61800 63.33 25 21.29420 2.23...

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Abstract

The present invention provides a zoom lens having a small F value in the entire zoom region and well correcting 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 a positive The fifth lens group (G5) configuration, 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 Always narrow, the interval between the third and fourth lens groups is always changing, the interval between the fourth and fifth lens groups is always widening, the first lens group from the object side in turn from the negative, positive, positive three The second lens group is composed of negative, negative, positive and negative lenses in sequence from the object side. The third lens group is composed of four positive lenses, two negative lenses and an aperture stop. The fifth lens A group consists of a 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 3 are known as five-group 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] In recent years, digital cameras, digital cameras with interchangeable lenses, cameras for cinematography, etc. have been increasing in pixels, and zoom lenses used in these cameras are also required to be well corrected for various aberrations in response to higher pixels. high-pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/20
CPCG02B15/163G02B15/20G02B15/145121G02B27/646
Inventor 野田大雅长伦生
Owner FUJIFILM CORP
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