Method of and apparatus for inspecting a curved shape
AssigneeAsahi Glass Company, Limited
InventorIsao Saito
Life of this patent
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Abstract
It is an object of the present invention to make it possible to use the same inspection apparatus regardless of the difference of the model of the glass sheets. The present invention comprises a step of irradiating a surface of a glass sheet G with light from a patterned light source 2a having a specific pattern, a step of picking up an image of the glass sheet G, a step of analyzing the image to extract a reflected image of the light source 2a, and a step of performing a good/defective judgment of the shape of the glass sheet G based on the result of comparing data regarding to the extracted reflected image with data regarding to the reflected image by a good product which is registered in advance.
Claims12
A method of inspecting a curved shape, comprising:
- a step of irradiating a surface of an object to be inspected with light from a patterned light source;
- a step of picking up an image of the object to be inspected;
- a step of analyzing the image to extract a reflected image of the light source;
- and
- a step of performing a good/defective judgment of the shape of the object to be inspected based on the result of comparing data regarding the extracted reflected image with data regarding the reflected image from a good product which is registered in advance.
An apparatus for inspecting a curved shape, comprising:
- a light source for irradiating a surface of an object to be inspected with patterned light;
- a camera for picking up an image of the object to be inspected;
- and
- a controller for analyzing the image to extract a reflected image of the light source and performing a good/defective judgment of the shape of the object to be inspected based on the result of comparing data regarding to the extracted reflected image with data regarding to the reflected image from a good product which is registered in advance.
Dependencies are inferred from the claim text.