Patent ID: 6763838
Filing Date: 2004-07-20
Classification: A24C,G01N,Y10S

Abstract:
A device for detecting a filling density of filler forming a rod-shaped article, comprising:light incidence means for causing inspection light to enter the rod-shaped article, said light incidence means including a plurality of light sources disposed in a predetermined arcuate area surrounding the rod-shaped article adjacently to each other in a circumferential direction of the rod-shaped article and causing the inspection light to enter the rod-shaped article in an identical cross section of the rod-shaped article; light-receiving means for receiving the inspection light from the rod-shaped article, said light-receiving means including at least one light receiver disposed in an area other than said arcuate area in the circumferential direction of the rod-shaped article so as not to face any of said light sources, said light receiver receiving the inspection light emitted from the rod-shaped article along said cross section, and generating a signal indicative of the received-light quantity; and measuring means for measuring a filling density of the filler based on the signal from the light-receiving means.