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：US20200298802A1

公开(公告)日：2020-09-24

申请号：US16821492

申请日：2020-03-17

Applicant: Littelfuse, Inc.

Inventor： Mindaugas Ketlerius ,  MANGIRDAS RASIULIS

IPC: B60S1/08 ,  G01N21/84 ,  G01N21/55

Abstract: An optical rain sensor including a plurality of light detecting elements and a plurality of peripheral light emitting elements disposed on a printed circuit board (PCB) and surrounding a central light emitting element disposed on the PCB, wherein, in a first mode of operation, the central light emitting element is configured to emit light beams toward the plurality of light detecting elements, and wherein, in a second mode of operation, each of the peripheral light emitting elements is configured to emit light beams toward the plurality of light detecting elements.

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.