====几何光学====
  * [[en:yanding:imaging_basics:optics:geometric_optics:law_of_rectilinear_propagation]]
  * [[en:yanding:imaging_basics:optics:geometric_optics:law_of_refraction]]
  * [[en:yanding:imaging_basics:optics:geometric_optics:law_of_reflection]]
  * [[en:yanding:imaging_basics:optics:geometric_optics:entrance_pupil]]
  * [[en:yanding:imaging_basics:optics:geometric_optics:depth_of_field]]
  * [[en:yanding:imaging_basics:optics:geometric_optics:fisheye_entrance_pupil]]