Patent ID: 7880869

Claim:
A calibration apparatus for optical system assembly, applicable to a finite conjugate optical system for calibrating positions of an internal light source and a focus object lens of said finite conjugate optical system to obtain optimal image-forming position, said apparatus comprising: an external light source; a low magnification image-forming optical system; an electrical control system; and a monitor; wherein beam from said external light source entering said finite conjugate optical system and passing through said focus lens to form a first focal spot; said electrical control system activating said internal light source of said finite conjugate optical system to generate beam to pass through said focus object lens to form a second focal spot; said low magnification image-forming optical system enlarging said first focal spot and said second focal spot and monitoring through said monitor; and adjusting position of said focus object lens or any component of said internal light source of said finite conjugate optical system to obtain the optimal image-forming quality.