Patent ID: 9019487
Filing Date: 2015-04-28
Classification: G01M,G02B

Abstract:
1. A method for detecting a parfocality of a zoom-stereo microscope, comprising: {circle around (1)} turning a magnification knob of the zoom-stereo microscope, and adjusting a magnification thereof to M; {circle around (2)} turning a focusing knob of the zoom-stereo microscope, particularly turning clockwise or counterclockwise from a benchmark position, and then acquiring Q groups of images corresponding to Q different focusing knob angles, wherein each group consists of T images, a No. k image in the T images acquired at the magnification of M and the focusing knob angle of θ {circle around (3)} respectively calculating definitions of the Q×T images acquired at Q different focusing knob angles and the magnification of M, according to four definition judging functions, then figuring out a highest definition of the Q×T definitions calculated according to each of the definition judging functions, and in the four focusing knob angles respectively corresponding to the four highest definitions, judging whether at least three focusing knob angles in the four focusing knob angles are in a same position, if yes, defining the focusing knob angles in the same position corresponding to the highest definitions as a relatively clearest position at the magnification of M, and if no, defining the focusing knob angle corresponding to the highest definition calculated according to the first definition judging function as the relatively clearest position at the magnification of M; and {circle around (4)} according to operations of step {circle around (1)} to step {circle around (3)}, acquiring P relatively clearest positions respectively corresponding to P different magnifications, and then judging whether the P relatively clearest positions are all parfocal positions via a parfocality judging method, if yes, confirming a success of a parfocality detection and judging that the zoom-stereo microscope is a qualified product, if no, confirming a failure of the parfocality detection and judging that the zoom-stereo microscope is an unqualified product, wherein P≧6.