点てん光こう源げん

noun

point light source; positional light source

Technical term used in optics, physics, and 3D computer graphics to describe an idealized light source that emits from a single point.

• 点てん光こう源げんからの光ひかりは四し方ほう八はっ方ぽうに広ひろがる。

  Light from a point light source spreads out in all directions.

• CGでは点てん光こう源げんを使つかって影かげを計けい算さんする。

  In computer graphics, point light sources are used to calculate shadows.