Title:
ズームレンズ及びそれを有する撮像装置
Document Type and Number:
Japanese Patent JP6628240
Kind Code:
B2
Abstract:
A zoom lens includes, in order from an object side to an image side: a first lens unit having a negative refractive power; and a second lens unit having a positive refractive power, the interval between the adjacent lens units varying during zooming. The configuration of the first lens unit, the focal length f1 of the first lens unit, and the back focus Sk at the wide angle end are appropriately set.
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Inventors:
Tetsuichiro Okumura
Application Number:
JP2015158016A
Publication Date:
January 08, 2020
Filing Date:
August 10, 2015
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B15/16; G02B13/18; G02B15/20
Domestic Patent References:
| JP2003344764A | ||||
| JP2001021806A | ||||
| JP2014235190A | ||||
| JP2002072093A | ||||
| JP3155513A | ||||
| JP9021950A | ||||
| JP1303409A | ||||
| JP2001512844A | ||||
| JP2010170114A | ||||
| JP2000187157A | ||||
| JP2011053663A | ||||
| JP2011013469A | ||||
| JP2010266577A | ||||
| JP2013156477A |
Foreign References:
| US5900987 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa