Patent ID: 8681217
Filing Date: 2014-03-25
Classification: G01N

Abstract:
1. An inspection apparatus comprising: an insertion portion which is inserted into a device under inspection; a projection unit which projects light which forms a striped pattern onto an object inside the device, the striped pattern includes a plurality of linear patterns used to measure the object by a phase shift method; an imaging unit which is provided in the insertion portion and images the object onto which the striped pattern is projected and generates image data; a generation unit which generates first image data forming a first image not including the striped pattern and second image data forming a second image including the striped pattern from the image data generated by the imaging unit; a designation unit which designates a position in the first image based on an instruction input through an input device; a display unit which displays the first image and the second image and displays a mark at the position in the first image designated by the designation unit; and a measurement unit which measures the object using the second image data with the phase shift method based on the position indicated by the mark, wherein the projection unit comprises a first projection unit which projects observation light onto the object and a second projection unit which projects light which forms the striped pattern onto the object, wherein the observation light is in a first wavelength band and the light which forms the striped pattern is in a second wavelength band other than the first wavelength band, wherein the imaging unit comprises an imaging device having a plurality of pixels, a first one of the plurality of pixels converting the observation light into a first signal and a second one of the plurality of pixels converting the light which forms the striped pattern into a second signal, and wherein the generation unit generates the first image data based on the first signal and generates the second image data based on the second signal.