Definitions for "MIRROR 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.
A lens where the light path is bent and reflected internally to increase the focal length of the lens; a simplified system that is usually less expensive than conventional super-telephoto (300mm and up) lenses.
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.
Keywords:  simpler, aperture, fixed, design
a simpler design with a fixed aperture
Keywords:  back
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