公开(公告)号：US11688998B2

公开(公告)日：2023-06-27

申请号：US16767888

申请日：2018-12-03

Applicant: ams AG

Inventor： Martin Münzer

IPC: H01S5/42 ,  G01J1/42 ,  G01S7/481 ,  G01S7/484 ,  G01S7/4865 ,  G01S17/10 ,  H01S5/042 ,  H01S5/00

CPC classification number: H01S5/423 ,  G01J1/4204 ,  G01S7/484 ,  G01S7/4813 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4865 ,  G01S17/10 ,  H01S5/005 ,  H01S5/042

Abstract: An emitter of electromagnetic radiation is configured for modes of operation providing fields of illumination of different widths, and a photodetector is configured for time-of-flight and proximity measurements by detecting electromagnetic radiation that is emitted by the emitter and reflected to the photodetector. The emitter is operated by a driver, which is configured for an alternation between the modes of operation. A time-of-flight measurement is performed when the field of illumination is narrow, and a proximity or ambient light measurement is performed when the field of illumination is wide.

公开(公告)号：US11652177B2

公开(公告)日：2023-05-16

申请号：US16638625

申请日：2018-07-27

Applicant: ams AG

Inventor： Martin Münzer ,  Peter Trattler

IPC: G01S7/486 ,  H01L31/0216 ,  H01L31/107 ,  G01S7/4865

CPC classification number: H01L31/02165 ,  G01S7/4868 ,  H01L31/107 ,  G01S7/4865

Abstract: The semiconductor device comprises an emitter of electromagnetic radiation, a photodetector enabling a detection of electromagnetic radiation of a specific wavelength, a filter having a passband including the specific wavelength, the filter being arranged on the photodetector, the emitter and/or the filter being electrically tunable to the specific wavelength, and a circuit configured to determine a time elapsed between emission and reception of a signal that is emitted by the emitter and then received by the photodetector.