geometrical optics

American  

noun

1. the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.

---

Etymology

Origin of geometrical optics

First recorded in 1830–40

Example Sentences

Huygens explained how wave theory accounts for geometrical optics.

From Scientific American • Oct. 14, 2013

During his school days he had paid some attention to geometrical optics, and had constructed a microscope and telescope.

From Heroes of Science: Physicists by Garnett, William

Shortly after his degree, he devoted a considerable amount of time to the preparation of a manuscript on geometrical optics, which was intended to form a university text-book, but was never completed.

From Heroes of Science: Physicists by Garnett, William

Not only are the laws of geometrical optics merely a somewhat rough approximation, but the complicated refractions which would inevitably occur in the atmospheres of the earth and Venus would disturb the optical images.

From The Three Eyes by Leblanc, Maurice

The various elements are carefully designed according to the laws of geometrical optics.

From Artificial Light Its Influence upon Civilization by Luckiesh, Matthew