Currently,mainstream medical dry films mostly include:xerothermic raster display laser imaging films、direct hot imaging films、whole digital sunlight dry films.

Some key technologies should be solved in the course of engineering applications and laser coherent imaging were analyzed.

A basic conception of laser interferometric imaging from the point of view of a hologram, when an object travels through an interference field produced with coherence light including a plane and spherical waves, is discussed.

The design and implement of calibrations system about laser image;

Restraining speckle of laser imaging system in accurate measurement;

Study on method of measuring tiny particle diameter in liquid by laser imaging;

Target detection based on laser imaging with "cat eye effect"