2056059-A is referenced by 20 patents.

A method of assessing the quality of a system comprising a wiper blade and the surface of a windscreen (1) by optically observing the diffusion, reflection and diffraction of light by residues of washing fluid remaining in the wiping field during the wiping operation. A light source (2) which is scattered, reflected and diffracted by the said residues is detected by an image sensor (3) and the place and time dependence thus determined are evaluated by analogue and digital electronics for the purpose of assessing the quality of the wiper blade or the quality of the surface of the screen.

Title
A method of assessing the quality of a system comprising a wiper blade and the surface of a windscreen
Application Number
GB19800025864 19800808
Publication Number
2056059 (A)
Application Date
August 8, 1980
Publication Date
March 11, 1981
Assignee
Bosch Robert
IPC
G01N 21/88
G01N 21/55
G01N 21/47
G01N 21/17
G01N 21/47
G01M 19/00
B60S 01/08
B60S 01/04
G01N 21/47
G01M 19/00
B60S 01/08
B60S 01/04
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