Patent ID: 7756311

Claim:
An optical image measuring device comprising: a light source; an interference light generating means for splitting the light output from said light source into a signal light directed toward an object to be measured and an reference light directed toward a reference object, and also for generating an interference light by overlaying the signal light that has passed through said object to be measured and the reference light that has passed through said reference object; a detecting means for outputting a detection signal upon receipt of said generated interference light; a scanning means for scanning the incident position of said signal light with respect to said object to be measured in a given main scanning direction and in a sub-scanning direction perpendicular to the main scanning direction respectively; and an image processing means for forming an image in the depth direction of said object to be measured at said incident position on the basis of said detection signal based on the interference light formed by said signal light that has passed through the incident position and said reference light and for forming a tomographic image along said two or more main scanning directions at different positions in said sub-scanning direction by forming the tomographic image along said main scanning direction based on said image at each of said formed incident positions, for each of a plurality of said incident positions along said main scanning direction; wherein said scanning means scans said signal light in the given direction crossing with said main scanning direction, and said image processing means forms a tomographic image for correction along said given direction and corrects the displacement of each of said two or more formed tomographic images based on said tomographic image for correction.