When mounting crystal blanks, crystal blanks can be mounted readily in a desired position on a mounting platform, and during pick-up, they can be readily detached from the mounting platform. To inspect scratches in a crystal blank 1, diffused oblique light is shined onto the crystal blank 1 from below by light-emitting diodes 6, and light reflected by scratches on the crystal blank 1 is detected by image capturing means 11 directly above the crystal blank 1. The crystal blank 1 is conveyed to the mounting platform 2 by a conveyor robot arm 15, and after inspection, it is conveyed away by same. A plurality of grooves are formed in the mounting surface 3 of the mounting platform 2. Thereby, during mounting, the crystal blank 1 does not slide over the mounting platform 2 and after mounting, it does not adhere tightly to the mounting platform 2.
An oblique illumination inspection system and method are described herein that are used to identify a defect (e.g., inclusion, onclusion, scratch, stain, blister, cord or other imperfection associated with a surface discontinuity or material non-homogeneity) on or within a glass sheet (e.g., LCD glass substrate).
An illumination module (20) for illuminating an object (10) comprises a number of illumination rings (62, 64, 66) each comprising a number of radiation-generating elements (50) which are all arranged on a flat plate (42). For each ring, a light guide (72, 82, 84) is provided for guiding the radiation from the ring to the exit window (60) where the radiation exits at a range of angles which are specific to said ring. The rings can be switched on individually, so that different kinds of illumination can be realized.
A random work arranging device that arranges randomly conveyed works by using a robot and carries out the arranged works, wherein the robot comprises a plurality of arms and a single robot controller for controlling respective arms independently one another to arrange and transfer the works from a conveying position to a carry-out position.
