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1. WO2020005962 - OPTICAL RAIN SENSOR WITH DYNAMIC OPTICAL CONFIGURATION CONTROL

Publication Number WO/2020/005962
Publication Date 02.01.2020
International Application No. PCT/US2019/039015
International Filing Date 25.06.2019
IPC
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
01
Arrangements or apparatus for facilitating the optical investigation
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
75
Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
77
by observing the effect on a chemical indicator
78
producing a change of colour
81
Indicating humidity
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
G01N 21/47 (2006.01)
G01N 21/00 (2006.01)
G01N 21/01 (2006.01)
G01N 21/17 (2006.01)
G01N 21/81 (2006.01)
G01N 21/84 (2006.01)
CPC
B60S 1/0837
Applicants
  • LITTELFUSE, INC. [US/US]; 8755 West Higgins Road, Suite 500 Chicago, Illinois 60631, US
Inventors
  • KETLERIUS, Mindaugas; LT
  • SOLISKIS, Liutauras; LT
Agents
  • DAISAK, Daniel N.; US
Priority Data
16/451,77825.06.2019US
62/689,50925.06.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL RAIN SENSOR WITH DYNAMIC OPTICAL CONFIGURATION CONTROL
(FR) CAPTEUR OPTIQUE DE PLUIE À COMMANDE DE CONFIGURATION OPTIQUE DYNAMIQUE
Abstract
(EN)
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.
(FR)
L'invention concerne un capteur optique de pluie pour détecter de la pluie sur un substrat transparent, le capteur optique de pluie comprenant un boîtier prévu sur une surface du substrat transparent, une pluralité de photo-éléments prévus à l'intérieur du boîtier, chaque photo-élément pouvant être sélectivement activé pour émettre de la lumière et désactivé pour recevoir de la lumière, et un dispositif de commande fonctionnellement connecté à la pluralité de photo-éléments et conçu pour entraîner en alternance la pluralité de photo-éléments entre un premier mode de fonctionnement et un second mode de fonctionnement. Dans le premier mode de fonctionnement au moins un premier photo-élément est activé et au moins un second photo-élément est désactivé et, dans le second mode de fonctionnement, au moins le second photo-élément est activé et au moins le premier photo-élément est désactivé.
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