Invention Grant
- Patent Title: Optical sensor, optical sensor unit, optical sensor device, and information terminal device
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Application No.: US17559135Application Date: 2021-12-22
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Publication No.: US12218161B2Publication Date: 2025-02-04
- Inventor: Hideaki Fukuzawa , Dai Matsuoka , Tomohito Mizuno , Tetsuya Shibata
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2020-214583 20201224,JP2021-103981 20210623,JP2021-154423 20210922
- Main IPC: H01L27/146
- IPC: H01L27/146 ; H10B61/00 ; H10N50/10 ; H10N50/80 ; G11C11/16
Abstract:
An optical sensor includes a wavelength filter configured to transmit light in a specific wavelength range and a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The light passing through the wavelength filter is applied to the magnetic element and the light applied to the magnetic element is detected.
Public/Granted literature
- US20220208820A1 OPTICAL SENSOR, OPTICAL SENSOR UNIT, OPTICAL SENSOR DEVICE, AND INFORMATION TERMINAL DEVICE Public/Granted day:2022-06-30
Information query
IPC分类:
