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1. WO2014129187 - ZOOM LENS SYSTEM, INTERCHANGEABLE LENS DEVICE, AND CAMERA SYSTEM

Publication Number WO/2014/129187
Publication Date 28.08.2014
International Application No. PCT/JP2014/000858
International Filing Date 19.02.2014
IPC
G02B 15/20 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
15Optical objectives with means for varying the magnification
14by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
16with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
20having an additional movable lens or lens group for varying the objective focal length
G02B 13/18 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G03B 5/00 2006.1
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
5Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
G03B 17/14 2006.1
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
17Details of cameras or camera bodies; Accessories therefor
02Bodies
12with means for supporting objectives, supplementary lenses, filters, masks, or turrets
14interchangeably
CPC
G02B 13/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 15/1461
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
15Optical objectives with means for varying the magnification
14by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
146having more than five groups
1461the first group being positive
G02B 15/17
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
15Optical objectives with means for varying the magnification
14by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
16with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
163having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
167having an additional fixed front lens or group of lenses
17arranged +--
G02B 27/646
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
64Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
646compensating for small deviations, e.g. due to vibration or shake
G03B 17/14
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
17Details of cameras or camera bodies; Accessories therefor
02Bodies
12with means for supporting objectives, supplementary lenses, filters, masks, or turrets
14interchangeably
G03B 2205/0046
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
2205Adjustment of optical system relative to image or object surface other than for focusing
0046Movement of one or more optical elements for zooming
Applicants
  • パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • 内田 恒夫 UCHIDA, Tsuneo
  • 末吉 正史 SUEYOSHI, Masafumi
Agents
  • 特許業務法人 小笠原特許事務所 OGASAWARA PATENT OFFICE
Priority Data
2013-03286822.02.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ZOOM LENS SYSTEM, INTERCHANGEABLE LENS DEVICE, AND CAMERA SYSTEM
(FR) SYSTÈME DE LENTILLES À FOCALE VARIABLE, DISPOSITIF DE LENTILLES INTERCHANGEABLES ET SYSTÈME DE CAMÉRA
(JA) ズームレンズ系、交換レンズ装置及びカメラシステム
Abstract
(EN) This zoom lens system comprises a first positive lens group, a second negative lens group, and a following lens group configured from at least three lens groups and an aperture diaphragm. The first lens group is configured from no more than two lens elements and moves along the optical axis during zooming. At least three negative lens elements are disposed between the first lens group and the aperture diaphragm. The conditions 0.30 < | BFW/YW | < 1.39 and 1.10 < SDT/SDW < 2.00 (where BFW is the back focusing at the wide end; YW is fW×tan(ωW); fW is the focal distance of the entire system at the wide end; ωW is the half field angle at the wide end; SDW is the largest aperture diaphragm diameter at the wide end; and SDT is the largest aperture diaphragm diameter at the tele end) are satisfied.
(FR) L'invention concerne un système de lentilles à focale variable comportant un premier groupe de lentilles positives, un second groupe de lentilles négatives, et un groupe de lentilles suivantes configuré à partir d'au moins trois groupes de lentilles et un diaphragme d'ouverture. Le premier groupe de lentilles est configuré à partir de deux éléments de lentilles au plus et se déplace le long de l'axe optique au cours du changement de focale. Au moins trois éléments de lentilles négatives sont disposés entre le premier groupe de lentilles et le diaphragme d'ouverture. Les conditions 0,30 < | BFW/YW | < 1,39 et 1,10 < SDT/SDW < 2,00 (où BFW est la mise au point arrière à l'extrémité de l'objectif à grand angle; YW est fW×tan(ωW); fW est la distance focale du système tout entier à l'extrémité de l'objectif à grand angle; ωW est l'angle de demi-champ à l'extrémité de l'objectif à grand angle; SDW est le diamètre le plus large du diaphragme d'ouverture à l'extrémité de l'objectif à grand angle; et SDT est le diamètre le plus large du diaphragme d'ouverture à l'extrémité de téléobjectif) sont satisfaites.
(JA)  第1正レンズ群と第2負レンズ群と3つ以上のレンズ群及び開口絞りで構成された後続レンズ群とからなり、第1レンズ群は、2枚以下のレンズ素子で構成され、ズーミングの際に光軸に沿って移動し、第1レンズ群と開口絞りとの間に3枚以上の負レンズ素子が配置され、条件:0.30<|BF/Y|<1.39及び1.10<SD/SD<2.00(BF:広角端でのバックフォーカス、Y=f×tan(ω)、f:広角端での全系の焦点距離、ω:広角端での半画角、SD:広角端での最大開口絞り径、SD:望遠端での最大開口絞り径)を満足するズームレンズ系。
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