isoluminescence point

They are compared by practical calculation from the equivalent luminous point , usable optical energy, focussing performance and applied situation, so as to guide the optical design.

通过具体的计算，从等效发光点、可被利用光能、聚光性能和使用场合等方面对它们进行了比较，用以指导光路设计，并提出了改进建