公开(公告)号：US09274321B2

公开(公告)日：2016-03-01

申请号：US14505246

申请日：2014-10-02

Applicant: OLYMPUS CORPORATION

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B15/14 ,  G02B17/00 ,  G02B13/00 ,  H04N5/225 ,  H04N5/232

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

公开(公告)号：US10551617B2

公开(公告)日：2020-02-04

申请号：US15452821

申请日：2017-03-08

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro Amanai ,  Ayami Imamura ,  Shinichi Mihara

IPC: G02B27/00 ,  A61B1/04 ,  G02B13/00 ,  G02B23/24 ,  A61B1/00

Abstract: An image pickup apparatus includes an image forming optical system having an aperture stop, a first lens, and a second lens, and an imager having a light-receiving surface that is curved to be concave toward the image forming optical system, and a relative partial dispersion for a medium of the first lens differs from a relative partial dispersion for a medium of the second lens, and when a straight line indicated by θgFLA=α×υdLA+βLA (where α=−0.00163) has been set, θgFLA and υdLA for the medium of the first lens are included in both of an area determined by the following conditional expression (1) and an area determined by the following conditional expression (2), andthe following conditional expression (3) is satisfied: 0.68

公开(公告)号：US09696524B2

公开(公告)日：2017-07-04

申请号：US15001791

申请日：2016-01-20

Applicant: OLYMPUS CORPORATION

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B15/14 ,  G02B17/00 ,  G02B13/00 ,  H04N5/225 ,  H04N5/232 ,  G02B15/16

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-banding zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

公开(公告)号：US10031322B2

公开(公告)日：2018-07-24

申请号：US15608421

申请日：2017-05-30

Applicant: OLYMPUS CORPORATION

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B17/00 ,  G02B13/00 ,  H04N5/232 ,  G02B15/14 ,  H04N5/225 ,  G02B15/16

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.