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Mirror Lenses Sunglasses

mirror lenses


(Mirror lens) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics).


(Mirror Lens) A type of long telephoto lens that uses several mirror optic surfaces to “fold” the light path, resulting in a very powerful telephoto lens that is relatively small.


(Mirror lens (Reflex Lens)) Lens in which some (usually two) of the elements are curved mirrors. This construction produces comparatively lightweight short fat long focus lenses. They cannot be fitted with a normal diaphragm.

sunglasses


Glasses tinted to protect the eyes from sunlight or glare


(sunglass) a convex lens that focuses the rays of the sun; used to start a fire


Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright Sun light and high-energy visible light from damaging or discomforting the eyes.


spectacles that are darkened or polarized to protect the eyes from the glare of the sun; "he was wearing a pair of mirrored shades"