LighttoolS的illumination module user's guide里面第一章光源定义里有这样一段话 在P18 W=M]1hy
Sources have the following characteristics: :K#'?tH
type: $*Njvr7
shape: Sl/[9-a)
power or flux 5%rD7/7N
spectral region g7EJyA
emitting direction +Tf ,2?O
spatial distribution HC@E&t