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'''Ray optics''' (also known as '''geometrical optics''') is a method of the study of optics where light is represented as [[ray]]s. In reality, light is more wavy, but approximating it as straight lines makes calculation and computation much more efficient.

'''Ray optics''' (also known as '''geometrical optics''') is a method of the study of optics where light is represented as [[ray]]s.  

 

In reality, light is more wavy, but approximating it as straight lines makes calculation and computation much more efficient.

There are some things that ray optics is not sufficient for, for example sub-wavesize structures and simulation. Also ray optics does not take into account [[diffraction]].

There are some things that ray optics is not sufficient for, for example sub-wavesize structures and simulation. Also ray optics does not take into account [[diffraction]].