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1. WO2016121955 - ZOOM LENS, OPTICAL APPARATUS, AND ZOOM LENS PRODUCTION METHOD

Publication Number WO/2016/121955
Publication Date 04.08.2016
International Application No. PCT/JP2016/052735
International Filing Date 29.01.2016
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
CPC
G02B 13/02
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
02Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
G02B 15/145527
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
145having five groups only
1455the first group being negative
145527arranged -+-++
G02B 15/177
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
177having a negative front lens or group of lenses
G02B 27/0025
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
0025for optical correction, e.g. distorsion, aberration
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
G02B 9/60
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
9Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
60having five components only
Applicants
  • 株式会社ニコン NIKON CORPORATION [JP]/[JP]
Inventors
  • 梅田 武 UMEDA Takeshi
Agents
  • 志賀 正武 SHIGA Masatake
Priority Data
2015-01721230.01.2015JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ZOOM LENS, OPTICAL APPARATUS, AND ZOOM LENS PRODUCTION METHOD
(FR) OBJECTIF À FOCALE VARIABLE, APPAREIL OPTIQUE, ET PROCÉDÉ DE FABRICATION D'UN OBJECTIF À FOCALE VARIABLE
(JA) ズームレンズ、光学機器、およびズームレンズの製造方法
Abstract
(EN) A zoom lens that has, in order along the optical axis thereof from an object side, a first lens group that has negative refractive power, a second lens group that has positive refractive power, a third lens group that has negative refractive power, a fourth lens group, and a fifth lens group. During power variation, the interval between the first lens group and the second lens group varies, the interval between the second lens group and the third lens group varies, the interval between the third lens group and the fourth lens group varies, the interval between the fourth lens group and the fifth lens group varies, the second lens group and the fourth lens group move along the optical axis across the same trajectory, and at least the third lens group moves along the optical axis.
(FR) La présente invention concerne un objectif à focale variable qui comprend, dans l'ordre le long de son axe optique en partant d'un côté objet, un premier groupe de lentilles ayant une réfringence négative, un deuxième groupe de lentilles possédant une réfringence positive, un troisième groupe de lentilles ayant une réfringence négative, un quatrième groupe de lentilles, et un cinquième groupe de lentilles. Pendant la variation de puissance, l'intervalle entre le premier groupe de lentilles et le deuxième groupe de lentilles varie, l'intervalle entre ce deuxième groupe de lentilles et le troisième groupe de lentilles varie, l'intervalle entre ledit troisième groupe de lentilles et le quatrième groupe de lentilles varie, l'intervalle entre ce quatrième groupe de lentilles et le cinquième groupe de lentilles varie, le deuxième groupe de lentilles et le quatrième groupe de lentilles se déplacent le long de l'axe optique sur la même trajectoire, et au moins le troisième groupe de lentilles se déplace le long de l'axe optique.
(JA)  ズームレンズは、光軸に沿って物体側から順に、負の屈折力を有する第1レンズ群と、正の屈折力を有する第2レンズ群と、負の屈折力を有する第3レンズ群と、第4レンズ群と、第5レンズ群とを有し、変倍の際、前記第1レンズ群と前記第2レンズ群との間隔が変化し、前記第2レンズ群と前記第3レンズ群との間隔が変化し、前記第3レンズ群と前記第4レンズ群との間隔が変化し、前記第4レンズ群と前記第5レンズ群との間隔が変化し、前記第2レンズ群と前記第4レンズ群とが光軸に沿って同じ軌跡で移動し、少なくとも前記第3レンズ群が光軸に沿って移動する。
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