A spatially-resolved spectrometer is used to measure streaking in molded sample plastic parts produced using a molding tool with various mold inserts which produce certain desired topological surface features upon these sample plastic parts. The measurements from one or more of these sample plastic parts...http://www.google.com.hk/patents/US6868371?utm_source=gb-gplus-share專利 US6868371 - System and method to quantify appearance defects in molded plastic parts
