| 摘要 |
An optical apparatus. More particularly, a laser sensitometer. The apparatus comprises: a polarized light source adapted to provide a Gaussian beam of light directed along an optical axis; a rotatable polarizer disposed in the optical axis adapted to vary an intensity of the beam of light, the polarizer being rotatable about the optical axis; and a rotatable polygon disposed in the optical axis, the polygon being rotatable about an axis perpendicular to the optical axis.
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