Method for measuring scanning pattern of optical scanning apparatus, apparatus for measuring scanning pattern, and method for calibrating image

An apparatus for measuring a scanning pattern of an optical scanning apparatus that scans an object being illuminated with illumination light and generates a display image of the object being illuminated, the apparatus comprising:

• a screen scanned by the illumination light;
• and
• an optical position detector configured to detect a position of an irradiation spot of the illumination light on the screen, wherein
• the apparatus for measuring a scanning pattern sequentially detects the position of the irradiation spot at a predetermined plurality of time points with the optical position detector during scanning of the screen to measure the scanning pattern of the illumination light.

A method for calibrating an image in an optical scanning apparatus that calibrates pixel positions of an image of an object being illuminated, and generates a display image of the object being illuminated, the method comprising:

• acquiring a scanning pattern of the illumination light before scanning of the object being illuminated;
• and
• generating the display image by calibrating pixel positions of the image of the object being illuminated based on the scanning pattern acquired in the step of acquiring a scanning pattern, wherein
• the step of acquiring a scanning pattern comprises
• scanning a screen with the illumination light;
• and
• acquiring irradiation position information by sequentially detecting, with an optical position detector, a position of an irradiation spot of the illumination light on the screen at a predetermined plurality of time points during scanning of the screen.