公开(公告)号：US20210199768A1

公开(公告)日：2021-07-01

申请号：US17057631

申请日：2019-05-20

Applicant: ams AG

Inventor： Matt KROESE ,  Gerhard EILMSTEINER ,  Josef KRIEBERNEGG ,  Desislava OPPEL

IPC: G01S7/481 ,  G01S17/04

Abstract: An optical device (306) includes an internal cavity and an emitter (102) disposed in the internal cavity (210). The emitter is operable to emit a first light wave (220). The optical device also includes a detector (104) disposed in the internal cavity. The detector is operable to detect a second light wave (225) that is based on the first light wave. The second light wave is susceptible to being coupled with an undesired light wave (235) that is based on the first light wave. The optical device further includes an interference filter (310) disposed on the detector. The interference filter has a filter property that causes the interference filter to attenuate the interfering light wave.

公开(公告)号：US20210164831A1

公开(公告)日：2021-06-03

申请号：US17263244

申请日：2019-07-26

Applicant: ams AG

Inventor： Gerhard EILMSTEINER ,  Desislava OPPEL ,  Deborah MORECROFT ,  Jens HOFRICHTER

IPC: G01J1/04 ,  G01J3/02 ,  G01J3/51 ,  G01T1/20 ,  G02B5/28

Abstract: A filter assembly includes comprises an incident medium, a spacer, at least one dielectric filter and an exit medium. The spacer is arranged between the incident medium and the at least one dielectric filter such that the incident medium and the at least one dielectric filter are spaced apart by a working distance and thereby enclose a medium of lower index of refraction than the incident medium. The at least one dielectric filter is arranged on the exit medium.