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Optical axis (coincides with red ray) and rays symmetrical to optical axis (pair of blue and pair of green rays) propagating through different lenses. An optical axis is an imaginary line that passes through the geometrical center of an optical system such as a camera lens , microscope or telescopic sight . [ 1 ]
A burning apparatus consisting of two biconvex lens. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.
A simple lens is an optical element with perfect or approximate axial symmetry which transmits and refracts light, concentrating or diverging the beam. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element.
The two principal planes of a lens have the property that a ray emerging from the lens appears to have crossed the rear principal plane at the same distance from the optical axis that the ray appeared to have crossed the front principal plane, as viewed from the front of the lens. This means that the lens can be treated as if all of the ...
The Nikon PC-E Nikkor 24mm f/3.5D ED Lens is a tilt-shift, wide-angle prime lens that provides the equivalent of the corresponding view camera front movements on Nikon F-mount camera bodies. Its ultra-wide perspective control features tilt, shift and rotation capability, well-suited for architectural and nature photography .
An axicon is a specialized type of lens that has a conical surface. An axicon transforms a laser beam into a ring shaped distribution. [1] They can be convex or concave and be made of any optical material. The combination with other axicons or lenses allows a wide variety of beam patterns to be generated.
A photographic lens or objective is an integrated system comprising one or more simple optical lens elements, which produces an image of a distant object. The main article for this category is Photographic lens .
The TS-E 50 mm f / 2.8L MACRO was the first lens from Canon which combining Macro and tilt-shift. It was announced together with a series of lenses, the TS-E 90 mm f/2.8L MACRO and the TS-E 135mm f/4L MACRO, which introduced the same features.