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1. WO2000040443 - DETECTOR OF STAINS ON A TRANSPARENT PLATE SURFACE

Publication Number WO/2000/040443
Publication Date 13.07.2000
International Application No. PCT/FR1999/003171
International Filing Date 15.12.1999
Chapter 2 Demand Filed 28.07.2000
IPC
B60S 1/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows, or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
G01N 21/88 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
84Systems specially adapted for particular applications
88Investigating the presence of flaws, defects or contamination
CPC
B60S 1/0822
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
0818including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
0822characterized by the arrangement or type of detection means
B60S 1/0837
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
0818including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
0822characterized by the arrangement or type of detection means
0833Optical rain sensor
0837with a particular arrangement of the optical elements
G01N 21/8806
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
84Systems specially adapted for particular applications
88Investigating the presence of flaws or contamination
8806Specially adapted optical and illumination features
Applicants
  • VALEO SYSTEMES D'ESSUYAGE [FR/FR]; Z.A. de l'Agiot 8, rue Louis-Lormand F-78321 La Verrière, FR (AllExceptUS)
  • LE BA, LoanMy [FR/FR]; FR (UsOnly)
  • SABATER, Jacques [FR/FR]; FR (UsOnly)
Inventors
  • LE BA, LoanMy; FR
  • SABATER, Jacques; FR
Agents
  • LEMAIRE, Marc; Valeo Management Services c/o Valeo Systèmes d'Essuyage Z.A. de L'Agiot - B.P.81 8, rue Louis Lormand F-78321 La Verrière, FR
Priority Data
98/1661530.12.1998FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) DETECTOR OF STAINS ON A TRANSPARENT PLATE SURFACE
(FR) DETECTEUR DE SALISSURES SUR LA SURFACE D'UNE PLAQUE TRANSPARENTE
Abstract
(EN)
The invention concerns a detector of stains on a transparent plate (1) surface (3). Said detector, arranged on the plate (1) internal surface (2), comprises means emitting (4) a modulated light signal (S) towards the plate (1) inside and means receiving (5) said signal, after it has been reflected on the plate (1) external surface (3). An optical unit (9), made with a material having an index substantially higher than (1), is arranged on the plate (1) internal surface (2). It is made up of at least three faces returning the light signal (14, 15, 18) and an interface (16) with the plate (1) internal surface (2) through optical coupling means (7). Means for deflecting (L1, L2, R1, R2) the signal (S) direct the signal (S) from the emitting means (4) towards the plate (1) and from the unit (9) towards the receiving means (5). At least two reflections (10 to 12), on the plate (1) external surface (1) are produced through the optical coupling means (7) without reflection on said plate (1) internal surface (2).
(FR)
L'invention propose un détecteur de salissures sur la surface (3) d'une plaque transparente (1). Ce détecteur, agencé sur la face interne (2) de la plaque (1), comporte des moyens émetteurs (4) d'un signal lumineux modulé (S) en direction de l'intérieur de la plaque (1) et des moyens récepteurs (5) de ce signal, après avoir été réfléchi sur la face externe (3) de la plaque (1). Un bloc optique (9), constitué en matériau d'indice sensiblement supérieur à (1), est disposé sur la face interne (2) de la plaque (1). Il est composé d'au moins trois faces de renvoi du signal lumineux (14, 15, 18) et d'une interface (16) avec la face interne (2) de la plaque (1) à travers des moyens de couplage optique (7). Des moyens de déviation (L1, L2, R1, R2) du signal (S) orientent le signal (S) des moyens d'émission (4) vers la plaque (1) et du bloc (9) vers des moyens de réception (5). Au moins deux réflexions (10 à 12), sur la face externe (3) de la plaque (1) sont réalisées à travers les moyens de couplage optique (7) sans réflexion sur la face interne (2) de cette plaque (1).
Also published as
Latest bibliographic data on file with the International Bureau