Pinhole or hole detection device and method
AssigneePosco
InventorHo-Moon BAE
Life of this patent
Estimating the term…
Abstract
A detection device and a detection method for detecting a hole or a pinhole present in a material are provided. The detection device includes: an illumination unit irradiating light at one side of the material; a light receiving unit acquiring an image of the material at the other side of the material to output a detection signal; a detection unit determining whether or not the hole or the pinhole is present in the material using the detection signal; and an illumination control unit dividing the illumination unit into a plurality of regions and controlling the illumination unit to irradiate light having different intensities of illumination for each of the plurality of regions.
Claims20
A detection device for detecting a hole or a pinhole present in a material, comprising:
- an illumination unit irradiating light to one side of the material;
- a light receiving unit acquiring an image of the material on the other side of the material to output a detection signal;
- a detection unit determining whether or not the hole or the pinhole is present in the material using the detection signal;
- and
- an illumination control unit dividing the illumination unit into a plurality of regions and controlling the illumination unit to irradiate light having different intensities of illumination for each of the plurality of regions.
A detection method for detecting a hole or a pinhole present in a material using an illumination unit disposed below the material and a light receiving unit disposed above the material, comprising:
- dividing the illumination unit into a plurality of regions;
- and
- controlling the illumination unit to irradiate light having different intensities of illumination for each of the plurality of regions.
Dependencies are inferred from the claim text.