Patent ID: 7643746
Filing Date: 2010-01-05
Classification: G01N

Abstract:
1. A light intensity adjustment system comprising: a light irradiation device that irradiates light on a predetermined target area set up on a work piece; a photographic device that photographs the target area and outputs obtained target area images to an image processor for the purpose of a surface scan, wherein said light irradiation device has multiple light irradiation units that are independently light intensity adjustable, and the light intensity adjustment system further comprises a light intensity control unit that controls respective light intensities of said light irradiation units so that brightness of the various parts of the target area images output by said photographic device approaches a predetermined standard value; and an individual light irradiation aspect data acquisition unit, whereby light irradiation aspects on said target area based on the light irradiated from the individual light irradiation units are acquired in advance from said target area images and are memorized in a predetermined memory region as individual light irradiation aspect data, and said light intensity control unit controls the light intensities of said light irradiation units based on said individual light irradiation aspect data.