公开(公告)号：US11084463B2

公开(公告)日：2021-08-10

申请号：US16451778

申请日：2019-06-25

Applicant: Littelfuse, Inc.

Inventor： Mindaugas Ketlerius ,  Liutauras Soliskis

IPC: G01N21/55 ,  B60S1/08

Abstract: An optical rain sensor for detecting rainfall on a transparent substrate, the optical rain sensor including a housing disposed on a surface of the transparent substrate, a plurality of photo elements disposed within the housing, each photo element capable of being selectively activated to emit light and deactivated to receive light, and a controller operatively connected to the plurality of photo elements and configured to alternatingly drive the plurality of photo elements between a first mode of operation and a second mode of operation, wherein, in the first mode of operation, at least a first photo element is activated and at least a second photo element is deactivated and, in the second mode of operation, at least the second photo element is activated and at least the first photo element is deactivated.

公开(公告)号：US20190389431A1

公开(公告)日：2019-12-26

申请号：US16451778

申请日：2019-06-25

Applicant: Littelfuse, Inc.

Inventor： Mindaugas Ketlerius ,  Liutauras Soliskis

IPC: B60S1/08

Abstract: An optical rain sensor for detecting rainfall on a transparent substrate, the optical rain sensor including a housing disposed on a surface of the transparent substrate, a plurality of photo elements disposed within the housing, each photo element capable of being selectively activated to emit light and deactivated to receive light, and a controller operatively connected to the plurality of photo elements and configured to alternatingly drive the plurality of photo elements between a first mode of operation and a second mode of operation, wherein, in the first mode of operation, at least a first photo element is activated and at least a second photo element is deactivated and, in the second mode of operation, at least the second photo element is activated and at least the first photo element is deactivated.