Definition of catoptrics

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Photonics Dictionary

catoptrics: Catoptrics is the field of optics concerned with the reflection of light from reflective surfaces such as mirrors. It encompasses the study and analysis of how light rays interact with these surfaces, including the laws of reflection and the design and use of reflective optical devices.

Laws of reflection: The fundamental principles governing the behavior of light when it reflects off a surface. According to the law of reflection, the angle of incidence (the angle at which the incoming light ray strikes the surface) is equal to the angle of reflection (the angle at which the reflected ray leaves the surface).

Mirror types:

Plane mirrors: Flat mirrors that reflect light to form virtual images that are the same size as the object.

Concave mirrors: Curved mirrors that converge light rays to a focal point, often used in telescopes and headlights.

Convex mirrors: Curved mirrors that diverge light rays, used for wide-angle viewing in vehicle side mirrors and security applications.

Applications:

Optical instruments: Telescopes, microscopes, and periscopes that use mirrors to direct and focus light.

Imaging systems: Cameras and other devices that incorporate mirrors to manipulate light paths.

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