| 摘要 |
PURPOSE: A fiducial lens assembly for a vision camera is provided, which corrects a color aberration and a distortion aberration, and minimizes a variation of a magnification according to a variation of a height of an object and also improves a resolution. CONSTITUTION: The fiducial lens assembly comprises a case(30), and the first lens group(I) which are installed in the case and has a positive refractive index to focus an image as to a subject, and the second lens group(II) which is installed at an upper side as to the first lens group in the case and has a positive refractive index, and an iris(1) which is arranged between the first lens group and the second lens group and controls a light intensity, and an internal illumination unit(40) illuminating the object by being installed in the case.
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