System of detecting optical distortion of a...

Details System of detecting optical distortion of a... System of detecting optical distortion of a...

G - Physics

01

M

G01M 11/02 (2006.01) G01B 11/24 (2006.01) G01M 11/00 (2006.01)

Patent

CA 2095303

ABSTRACT OF THE DISCLOSURE When a predetermined region of a light- transmitting platelike member, such as a front windshield, is divided into a plurality of small parts to detect its optical distortion, and a target is sensed in turn through each small part of the region by image sensing means, according to one aspect of this invention, the target has at least three light emitting points capable of representing at least one angle, according to another aspect of this invention, the target represents at least two segments capable of forming at least one predetermined angle, and according to further aspect of this invention, a plurality of unit targets are arrayed in a predetermined direction, the image sensing means is swung along the above predetermined direction, and the platelike member is rotated in a direction across the predetermined direction.

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