quasi-spherical

Recover devices of samples treated under super-pressure loading by quasi-spherical converging shock wave using nitromethane liquid explosive were studied.

研究了以硝基甲烷液体炸药作为冲击波发生源的准球面汇聚冲击波超高压回收装置。

Diffraction-limited aspheric collimation lens;

衍射极限非球面准直透镜

Designing method for collimating fiber coupled laser diode is presented in the paper,aspheric collimator designed has a focal length of 50mm for Number Aperture NA=0.

从像质评定可以看出,非球面准直镜几乎接近衍射极限,整个系统的波像差小于0。

It can be used in wide range of radii so that the development of reference lens is becoming an urgent task to be solved.

标准球面透镜组能产生峰谷值优于λ／20的球面波，是微小光学系统干涉研究项目重要的研究内容之一。