Title:
UNDERWATER PHOTOGRAPHING LENS DEVICE
Document Type and Number:
Japanese Patent JP2017009977
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an underwater photographing lens device that can surely anchor a correction lens to a fixed position, and does not generate disadvantageous deformation of images due to the correction lens.SOLUTION: An underwater photographing lens device comprises: an interchangeable lens 2 that is mounted to a camera main body; a dome port 3 that has a dome-shaped light transmission surface, and is provided so that the light transmission surface covers a forward part of the interchangeable lens; one piece of a correction lens 4 that is arranged between th interchangeable lens 2 and the dome port 3, and corrects a peripheral aberration of an image formation plane; a first attachment member 5 that is mounted to the interchangeable lens 4 and serves a lens barrel; and a second attachment member 6 that serves as a lens presser attaching and anchoring the correction lens 4 to a prescribed position in cooperation with the first attachment member, and is anchored thereto to anchor.SELECTED DRAWING: Figure 1
Inventors:
NAKANE AKIHIKO
ARAI KUNIO
ARAI KUNIO
Application Number:
JP2015136497A
Publication Date:
January 12, 2017
Filing Date:
June 22, 2015
Export Citation:
Assignee:
TOCAD ENERGY CO LTD
International Classes:
G02B7/02; G02B13/00; G02B15/10; G03B17/08; G03B17/14