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Patent Searching and Data


Title:
AUTOFOCUS DRIVE MECHANISM USING SHAPE-MEMORY-ALLOY THIN FILM ACTUATOR ARRAY
Document Type and Number:
WIPO Patent Application WO/2019/181455
Kind Code:
A1
Abstract:
The present invention provides an ultrathin autofocus drive mechanism that allows a camera module with a lower height to be achieved, facilitates assembly, and corrects for camera shake. According to the present invention, with respect to an actuator array substrate 7 which comprises a substrate 1 having an array of shape-memory-alloy thin film actuators 2 (a plurality of planarly arrayed actuators) arching therefrom, the application of a biasing force by a leaf spring 10 to the actuator array substrate 7 allows for perpendicular movement, relative to the substrate 1, of a plate 9 for supporting the object to be moved (autofocus mechanism); in addition, it is possible to tilt the plate 9 relative to the direction perpendicular to the substrate 1 by moving individual actuators 2 independently (camera-shake correction mechanism).

Inventors:
ISHIDA Akira (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
Application Number:
JP2019/008340
Publication Date:
September 26, 2019
Filing Date:
March 04, 2019
Export Citation:
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Assignee:
NATIONAL INSTITUTE FOR MATERIALS SCIENCE (2-1 Sengen 1-chome, Tsukuba-shi Ibaraki, 47, 〒3050047, JP)
International Classes:
G02B7/04; F03G7/06; G03B5/00; H04M1/02; H04N5/225
Domestic Patent References:
WO2017170046A12017-10-05
Foreign References:
JP2009089306A2009-04-23
JP2011109853A2011-06-02
JPH09127398A1997-05-16
JPH06172886A1994-06-21
JP2006348319A2006-12-28
JP2010169800A2010-08-05
JP2006055991A2006-03-02
Attorney, Agent or Firm:
TSUZUKI Noriaki (Maruishi Bldg. 3F, 1-10-4 Kajicho, Chiyoda-k, Tokyo 44, 〒1010044, JP)
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