Supercharge Your Innovation With Domain-Expert AI Agents!

Zoom lens and image pickup apparatus with same

An image pickup device, zoom lens technology, applied in the field of zoom lens, can solve the problems of difficult lens unit structure, shadow brightness, drop, etc.

Inactive Publication Date: 2013-03-27
OLYMPUS CORP
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the characteristics of the image pickup element, shading (or a drop in brightness) due to a large incident angle may occur
[0011] In addition, the fourth lens unit has an excessively high negative refractive power
This makes it difficult to simplify the structure of the lens unit while achieving aberration reduction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zoom lens and image pickup apparatus with same
  • Zoom lens and image pickup apparatus with same
  • Zoom lens and image pickup apparatus with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0332] Hereinafter, embodiments of a zoom lens and an image pickup device according to the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to these embodiments.

[0333] In the following, first to seventeenth embodiments of the zoom lens according to the present invention will be described. Figure 1A , 1B and 1C to 17A, 17B, and 17C are zoom lenses according to the first to seventeenth embodiments of the present invention at the wide-angle end ( Figures 1A to 17A ), at intermediate focal lengths ( Figures 1B to 17B ) and at the telephoto end ( Figures 1C to 17C ) profile. exist Figure 1A to Figure 17C Among them, the first lens unit is denoted by G1, the second lens unit is denoted by G2, the aperture stop is denoted by S, the third lens unit is denoted by G3, and the fourth lens unit is denoted by G4. The wavelength range of light restricts the coati...

example 1

[0404] unit mm

[0405] surface data

[0406] Surface number r d nd vd

[0407]1* -9.669 7.20 1.88300 40.76

[0408] 2 ∞ 0.20

[0409] 3* 12.688 1.50 1.80610 40.92

[0410] 4* -462.757 variable

[0411] 5 -10.258 0.80 1.88300 40.76

[0412] 6 14.005 1.54 1.82114 24.06

[0413] 7* -34.185 variable

[0414] 8(S) ∞ -0.50

[0415] 9* 4.980 2.30 1.58313 59.38

[0416] 10 22.870 0.58 1.84666 23.78

[0417] 11 7.514 2.50 1.59201 67.02

[0418] 12* -75.687 variable

[0419] 13* -9.866 1.00 1.52542 55.78

[0420] 14 -18.904 variable

[0421] 15 ∞ 0.50 1.53996 59.45

[0422] 16 ∞ 0.27

[0423] 17 ∞ 0.50 1.51633 64.14

[0424] 18 ∞ 0.23

[0425] Image plane (light receiving surface)

[0426] Aspheric Data

[0427] first surface

[0428] K=-6.995, A4=8.86364e-05, A6=-1.36794e-06, A8=9.48088e-08, A10=-1.27868e-09

[0429] third surface

[0430] K=0.000, A4=-8.08906e-04, A6=4.52266e-07, A8=-1.05791e-06

[0431] fourth surface

[0432] K=13073.884, A4=-1.96823e-04, A6...

example 2

[0460] unit mm

[0461] surface data

[0462] Surface number r d nd vd

[0463] 1* -10.060 7.20 1.88300 40.76

[0464] 2 ∞ 0.20

[0465] 3* 21.209 1.50 1.80610 40.92

[0466] 4* -31.550 variable

[0467] 5 -11.016 0.80 1.88300 40.76

[0468] 6 13.255 1.54 1.82114 24.06

[0469] 7* -39.143 variable

[0470] 8(S) ∞ -0.50

[0471] 9* 4.970 2.30 1.58313 59.38

[0472] 10 22.888 0.58 1.84666 23.78

[0473] 11 7.309 2.50 1.59201 67.02

[0474] 12* -200.331 variable

[0475] 13* -7.210 1.00 1.49700 81.54

[0476] 14 -11.462 variable

[0477] 15 ∞ 0.40 1.51633 64.14

[0478] 16 ∞ 0.35

[0479] Image plane (light receiving surface)

[0480] Aspheric Data

[0481] first surface

[0482] K=-5.778, A4=1.53140e-04, A6=-1.85187e-06, A8=8.77509e-08, A10=-1.31368e-09

[0483] third surface

[0484] K=0.000, A4=-1.04142e-03, A6=-2.26093e-05, A8=-1.10204e-06

[0485] fourth surface

[0486] K=0.000, A4=-5.76267e-04, A6=-2.99028e-05, A8=-4.64492e-07, A10=9.30735e-09

[048...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a zoom lens and an image pickup apparatus with same. The apparatus comprises a zoom lens and an image pickup element distributed on an image side of the zoom lens and converting an optical image formed by the zoom lens into an electric signal. The zoom lens comprises: sequentially from an object side to the image side, a first negative lens unit, a second negative lens unit, a third positive lens unit and a fourth negative lens unit. During the zoom period from a wide angle end to a telephoto end, the distance between the first and second lens units changes, the distance between the second and third lens units changes, and the distance between the third and fourth lens units changes. The distance between the second and third lens units on the telephoto end is smaller than that on the wide angle end. The first lens unit comprises a reflection surface for deflecting light paths, and the zoom lens satisfies the following condition:-100<fg4 / ihw<-2.5.

Description

technical field [0001] The invention relates to a zoom lens having a reflective surface that deflects the optical path. The present invention also relates to an image pickup device equipped with such a zoom lens and an image pickup element. Background technique [0002] Zoom lenses for image pickup devices such as digital cameras and video cameras are required to have high performance and a high zoom ratio and to be made smaller. One of the important factors for achieving downsizing of the image pickup device is the thickness of the zoom lens (ie, the size of the lens system measured from the object side along the axial direction of light incident on the lens system). [0003] In known types of zoom lenses, in order to reduce the thickness of the image pickup device or camera when not in use, the lens system protrudes from the camera body when in use (i.e. when the device is turned on), and unit closed) into the camera body. [0004] However, in this type of zoom lens, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225H04N5/232G02B15/177G02B13/18G02B1/11G02B15/20
Inventor 片仓正弘河村一辉
Owner OLYMPUS CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com