Patent ID: 7623223

Claim:
Stress measurement method comprising a reference stress related data obtaining step that measures a Raman spectrum by irradiating energy lines on an entire predetermined area of a reference specimen, and obtains data (hereinafter called as reference stress related data) regarding stress of the entire predetermined area from the Raman spectrum, a local stress originated data obtaining step that measures local stress applying to each of multiple positions in the predetermined area, and obtains local stress originated data as being data that can be obtained based on the local stress, a correlation data storage step that analyzes a correlation between the reference stress related data and the local stress originated data, and stores correlation data indicating the correlation, a measurement stress related data obtaining step that measures a Raman spectrum by irradiating energy lines on an entire area (hereinafter called as a measurement area), corresponding to the predetermined area, of a measurement specimen, and obtains data (hereinafter called as measurement stress related data) regarding stress of the entire measurement area from the Raman spectrum, and a calculation step that calculates local stress originated data in the measurement area based on the correlation data and the measurement stress related data.