G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/01 (2006.01) F21V 33/00 (2006.01) G01M 17/02 (2006.01) G01N 21/88 (2006.01) G01N 21/954 (2006.01) H05B 37/02 (2006.01)
Patent
CA 2378188
There is disclosed an apparatus in which when a surface having a curved portion, for example, a tire surface is visually inspected, light is uniformly illuminated on the surface. In this apparatus, an image pickup operation is performed by a CCD for a region to be visually inspected, which is illuminated by turning on LEDs. Based on the image pickup result, a density distribution of the region to be visually inspected is prepared. A difference between a target light quantity and light quantity, which is obtained for each field angle of the density distribution at which the region to be visually inspected is illuminated by each light source unit, is calculated and corrected. This correction allows the quantity of light reflected from the region to be visually inspected on the inner peripheral surface to become uniform.
Kitajima Toru
Kokubu Takao
Bridgestone Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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