| 摘要 |
A micro-cavity measuring method and equipment based on micro focal-length collimation are provided. The equipment can be used to measure irregular micro-cavities and“sub-macro”micro-cavities. Wherein a cylindrical or spherical lens with micro focal-length is combined with a fiber probe(11,12) to form a collimating and imaging optical system of a point light source(8), and the collimating and imaging optical system transforms the two or three dimensional movement of the fiber probe(11,12) into a change in image ultra-highly sensitively. A lot of advantages are obtained, i.e., micro measuring force, high aspect ratio, easy miniaturization, high resolution, simple construction and high speed.
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