Patent ID: 8451878
Filing Date: 2013-05-28
Classification: G01B,H01S

Abstract:
1. A surface profile inspection device, comprising: a laser projecting unit producing a sheet of light propagating in a linear region forming a plane from a laser beam emitted from a laser light source by an optical system and irradiating the sheet of light to an object to be measured; an image capturing unit capturing an image of the object to be measured; a configuration data generating unit extracting a light section line defined by an irradiation of the sheet of light on the object to be measured from image data of the image captured by the image capturing unit and generating surface profile data of the object to be measured; the laser light source including a semiconductor laser emitting a laser beam from a light emitting layer formed in a linear direction along a boarder of a p-n junction; and wherein an attitude of the semiconductor laser is set to arrange the linear direction to be unparallel to a spread direction of the sheet of light.