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Patent Searching and Data


Title:
LENS UNIT
Document Type and Number:
WIPO Patent Application WO/2019/116881
Kind Code:
A1
Abstract:
[Problem] To provide a lens unit provided with: a lens barrel that holds a lens; and an attachment that is detachably attached to an end section of the lens barrel, wherein the attachment can be easily attached to and detached from the lens barrel. [Solution] This lens unit is provided with: a lens barrel 6 holding a lens 2; and an attachment 7 that is detachably attached to an end section of the lens barrel 6. The lens barrel 9 is provided with a magnet 11 for attaching the attachment 7 to the end section of the lens barrel 6, and the attachment 7 is provided with a magnet 16 that is attracted to the magnet 11. A contact surface 12b for determining the position of the attachment 7 with respect to the lens barrel 6 in a direction crossing the optical direction of the lens 2 is formed on the lens barrel 6, the contact surface 12b being formed as an inclined surface that is inclined relative to the optical direction of the lens 2. A contact surface 15b in contact with the contact surface 12b is formed on the attachment 7.

Inventors:
HANAOKA Takafumi (1-1538 Kamigawa Suwa-sh, Nagano 21, 〒3920021, JP)
Application Number:
JP2018/043505
Publication Date:
June 20, 2019
Filing Date:
November 27, 2018
Export Citation:
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Assignee:
NITTOH INC. (4529 ooaza-Konami, Suwa-shi Nagano, 31, 〒3920131, JP)
International Classes:
G02B7/02; G02B7/10; G03B11/04
Foreign References:
JPS5898624U1983-07-05
JP2017107210A2017-06-15
JP3771549B22006-04-26
Attorney, Agent or Firm:
KODAIRA Shin (2-7-6, Osachi-minamoto Okaya-sh, Nagano 86, 〒3940086, JP)
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