Title:
ズームレンズ、投写型表示装置、および、撮像装置
Document Type and Number:
Japanese Patent JP6587590
Kind Code:
B2
Abstract:
Provided are a zoom lens, a projection display device including the zoom lens, and an imaging apparatus including the zoom lens. The zoom lens forms an intermediate image at a position conjugate to a reduction side imaging plane and forms the intermediate image again on a magnification side imaging plane. The zoom lens includes: a first optical system on the magnification side; and a second optical system on the reduction side. The intermediate image is formed between the magnification side and the reduction side. The second optical system includes two movable lens groups, which move by changing spacings between the groups adjacent to each other in a direction of an optical axis during zooming, and two stationary lens groups which remain stationary with respect to the reduction side imaging plane during zooming. One stationary lens group is disposed to be closest to the reduction side, and has a positive refractive power.
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Inventors:
Yukiko Nagatoshi
Kazunori Inoue
Akiko Nagahara
Kazunori Inoue
Akiko Nagahara
Application Number:
JP2016168102A
Publication Date:
October 09, 2019
Filing Date:
August 30, 2016
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B15/16; G02B13/16; G02B15/167; G03B21/14
Domestic Patent References:
| JP2014170129A | ||||
| JP2010122573A | ||||
| JP201448413A | ||||
| JP2017102239A |
Foreign References:
| WO2013005444A1 | ||||
| US20050259330 | ||||
| CN1601318A |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office