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Title:
OPTICAL FILTER SWITCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/217513
Kind Code:
A1
Abstract:
An optical filter switching device (1), said optical filter switching device (1) having: a base portion (2); a support shaft portion (3), which protrudes out from the base portion (2); a rotating disc (4), which is supported on the support shaft portion (3) in a manner that enables said disc to rotate about the center of a shaft; a plurality of optical filters (51-54), which are arranged on the rotating disc (4) along a circumferential direction; and a rotating disc driving portion (6), which is fixed on the base portion (2), and causes the rotating disc (4) to rotate about the center of the shaft; the rotating disc driving portion (6) has: a first drive source portion (61), which is formed by a first piezoelectric element (611) and a second piezoelectric element (612) which elongate by means of electrification being fit in a direction orthogonal to a direction of said elongation; and a first abutting portion (62), which is in abutment with a portion of the rotating disc (4), and moves in manner depicting an elliptical trajectory according to deformation of the first drive source portion (61).

Inventors:
UNO MASARU (JP)
Application Number:
PCT/CN2021/087303
Publication Date:
October 20, 2022
Filing Date:
April 14, 2021
Export Citation:
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Assignee:
BEIJING XIAOMI MOBILE SOFTWARE CO LTD (CN)
International Classes:
G02B7/02; G03B11/00; G03B13/00
Foreign References:
CN104317035A2015-01-28
CN110376701A2019-10-25
CN206891945U2018-01-16
CN111694143A2020-09-22
JP2014071400A2014-04-21
JP2007155965A2007-06-21
JP2003259167A2003-09-12
Attorney, Agent or Firm:
FASHENG INTELLECTUAL PROPERTY COMPANY, LTD. (CN)
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