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Zoom lens and image pickup apparatus equipped with same

A zoom lens and focal length technology, applied in image communication, color TV parts, TV system parts, etc., can solve the problems of unfavorable compactness of cameras

Inactive Publication Date: 2012-12-05
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is detrimental to the compactness of the entire camera when the lens barrel is retracted

Method used

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  • Zoom lens and image pickup apparatus equipped with same
  • Zoom lens and image pickup apparatus equipped with same
  • Zoom lens and image pickup apparatus equipped with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0365] unit mm

[0366] surface data

[0367] surface number r d nd vd

[0368] 1 71.917 0.80 1.92286 18.90

[0369] 2 37.529 4.00 1.61800 63.33

[0370] 3 138.659 0.10

[0371] 4 26.623 5.50 1.77250 49.60

[0372] 5 * 192621.886 variable

[0373] 6 * 47.954 0.80 1.83481 42.71

[0374] 7 * 6.341 2.50

[0375] 8 118.332 1.60 1.94595 17.98

[0376] 9 -10.823 0.80 1.83481 42.71

[0377] 10 * 14.081 variable

[0378] 11(S) ∞ 0.30

[0379] 12 * 5.438 2.96 1.49700 81.54

[0380] 13 * -20.223 0.10

[0381] 14 6.668 1.50 1.77250 49.60

[0382] 15 11.000 0.70 1.84666 23.78

[0383] 16 3.966 variable

[0384] 17 * 31.214 1.90 1.74330 49.33

[0385] 18 * -9.711 variable

[0386] 19 ∞ 0.40 1.54771 62.84

[0387] 20 ∞ 0.50

[0388] 21 ∞ 0.50 1.51633 64.14

[0389] 22 ∞ 0.37

[0390] Image plane (light receiving surface)

[0391] Aspheric coefficient

[0392] Surface 1

[0393] 5th surface

[0394] k=0.654, A4=4.7...

Embodiment 2

[0429] unit mm

[0430] surface data

[0431] surface number r d nd vd

[0432] 1 62.968 0.80 1.92286 18.90

[0433] 2 34.496 3.50 1.61800 63.33

[0434] 3 155.107 0.10

[0435] 4 29.363 4.00 1.77250 49.60

[0436] 5 * -3588.280 variable

[0437] 6 * 59.714 0.80 1.83481 42.71

[0438] 7 * 6.851 2.50

[0439] 8 190.030 1.60 1.94595 17.98

[0440] 9 -10.823 0.80 1.83481 42.71

[0441] 10 * 14.854 variable

[0442] 11(S) ∞ 0.30

[0443] 12 * 5.209 2.30 1.49700 81.54

[0444] 13 * -15.384 0.10

[0445] 14 6.338 1.50 1.77250 49.60

[0446] 15 8.181 0.70 1.90000 23.80

[0447] 16 3.690 variable

[0448] 17 * 39.261 1.90 1.74330 49.33

[0449] 18 * -10.366 variable

[0450] 19 ∞ 0.50 1.51633 64.14

[0451] 20 ∞ 0.77

[0452] Image plane (light receiving surface)

[0453] Aspheric coefficient

[0454] 5th surface

[0455] k=0.654, A4=2.62061e-06, A6=2.58535e-09,

[0456] A8=-1.90250e-11, A10=3.54...

Embodiment 3

[0490] unit mm

[0491] surface data

[0492] surface number r d nd vd

[0493]1 47.985 0.80 1.92286 18.90

[0494] 2 28.243 0.05

[0495] 3 21.248 4.08 1.77250 49.60

[0496] 4 * -116.425 variable

[0497] 5 * 165.072 0.80 1.83481 42.71

[0498] 6 * 7.304 2.03

[0499] 7 -91.810 1.91 1.94595 17.98

[0500] 8 -10.823 0.80 1.83481 42.71

[0501] 9 * 17.995 variable

[0502] 10(S) ∞ 0.30

[0503] 11 * 5.280 2.46 1.49700 81.54

[0504] 12 * -14.512 0.28

[0505] 13 6.294 1.52 1.77250 49.60

[0506] 14 8.181 0.80 2.00068 25.47

[0507] 15 3.729 variable

[0508] 16 * 473.250 3.74 1.74330 49.33

[0509] 17 * -11.842 variable

[0510] 18 ∞ 0.40 1.54771 62.84

[0511] 19 ∞ 0.50

[0512] 20 ∞ 0.50 1.51633 64.14

[0513] 21 ∞ 0.37

[0514] Image plane (light receiving surface)

[0515] Aspheric coefficient

[0516] 4th surface

[0517] k=0.654, A4=1.17011e-05, A6=-1.96762e-09,

[0518] A...

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Abstract

A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a first lens unit located closest to the object side and having a positive refracting power and a second lens unit located on the image side of the first lens unit and having a negative refracting power. The distance between the first lens unit and the second lens unit is larger at the telephoto end than at the wide angle end. The rear side lens unit includes a third lens unit located closer to the object side at the telephoto end than at the wide angle end and having a positive refracting power, the distance between the third lens unit and the second lens unit being smaller at the telephoto end than at the wide angle end. The third lens unit satisfies the following condition: 0.01(f3 / ft(0.16 . . . (1).

Description

technical field [0001] The present invention relates to a zoom lens and an image pickup device equipped with it. Background technique [0002] In recent years, digital cameras that image a subject using an image pickup element such as a CCD or a CMOS sensor have become mainstream instead of film cameras. Also, various types of digital cameras have been developed from compact types for mass prices to advanced types for professionals. Among them is a camera that has a lens with a zoom ratio of about 10 or more that is housed in the camera body when not in use so as to be compact. [0003] Known from Japanese Patent Application Laid-Open Nos. 11-5244, 11-6958, 2006-171055, 2007-10695, and 2007-3554, zoom lenses having a zoom ratio of about 10 or higher include, for example, a class of zoom lenses from The object side includes in order: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; and a third lens unit having a po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/16G02B7/04G02B13/18H04N5/225
Inventor 半川雅司
Owner OLYMPUS CORP