Stanley Electric has been granted a patent for an optical scanning device designed to prevent abnormal vibration in a micro mirror. The device includes torsion bars, a movable frame, and meander-type piezoelectric actuators. The movable frame has a rib on the rear surface, with corner regions having a removal region for improved stability. GlobalData’s report on Stanley Electric gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Stanley Electric, Under-screen biometric identification was a key innovation area identified from patents. Stanley Electric's grant share as of April 2024 was 45%. Grant share is based on the ratio of number of grants to total number of patents.
Optical scanning device with micro mirror and piezoelectric actuators
A recently granted patent (Publication Number: US11971538B2) discloses an optical scanning device comprising a mirror unit, a first drive unit for rotating the mirror unit around a first drive axis, a movable frame connected to the mirror unit and a second drive unit for rotating the mirror unit around a second drive axis perpendicular to the first drive axis. The movable frame has a rectangular shape with a rib on its rear surface, and the corner regions of the frame have an absence region where no rib is provided or a thinner rib is present.
Furthermore, the patent claims specify that the absence region is located in an overlapping section of the rib where two side sections in different directions are overlapped. The corner region is designed to ensure that the deflection angle of the second drive axis per 1 degree of deflection of the mirror unit is equal to or less than 0.0353 degrees. This innovative design of the optical scanning device aims to improve the efficiency and accuracy of light beam reflection for various applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
