a field lens is
101Optical lens design — refers to the calculation of lens construction parameters (variables) that will meet a set of performance requirements and constraints, including cost and schedule limitations. Construction parameters include surface profile types (spherical,… …
102Telephoto lens — Portal|Photography|Large format camera lens.jpg created by a telephoto lens is the same as that created by an ordinary lens of the same specified focal length. Construction If a camera lens were to be constructed from a single lens of 200 mm… …
103Prime lens — In film and photography, a prime lens is either a photographic lens whose focal length is fixed, as opposed to a zoom lens, or it is the primary lens in a combination lens system.Confusion can sometimes result due to the two meanings of the term… …
104Canon FD 200 mm lens — Eight designs of Canon FD 200 mm lens were produced for the Canon FD lens mount. These spanned two generations (FD and New FD) and varied by aperture and macro ability. These photographic lenses were: Canon FD * 200 mm f/2.8 S.S.C.: This lens,… …
105Focus free lens — A focus free lens is a photographic lens whose focal point is fixed at its hyperfocal distance. Rather than having a method of determining the correct focusing distance and setting the lens to that focal point, a focus free lens relies on depth… …
106Canon EF-S 18-55mm lens — Infobox photographic lenses name = EF S 18 55mm USM I/II EF S 18 55mm I/II EF S 18 55 IS maker = Canon feat is = Available on the IS version feat usm = Available on the USM version but not on the kit version nor IS version feat sbf = y feat macro …
107Solid immersion lens — A solid immersion lens (SIL) has higher magnification and higher numerical aperture than common lenses by filling the object space with a high refractive index solid material. SIL was originally developed for enhancing the spatial resolution of… …
108Canon EF 200mm lens — Infobox photographic lenses name = EF 200mm f/2.8L (first edition) maker = Canon feat is = n feat usm = y feat sbf = n feat macro = n feat special = L Series type = p application = Pro telephoto prime flength = 200mm fov = 1.0 aperture = f/2.8… …
109Vector field reconstruction — [ [http://prola.aps.org/pdf/PRE/v51/i5/p4262 1 Global Vector Field Reconstruction from a Chaotic Experimental Signal in Copper Electrodissolution.] Letellier C, Le Sceller L , Maréchal E, Dutertre P, Maheu B, Gouesbet G, Fei Z, Hudson JL.… …
110magnetic lens — noun : an electron lens that focuses electron beams by means of a magnetic field * * * Physics. an electron lens using magnetic fields for focusing an electron beam. [1915 20] * * * magnetic lens noun The counterpart of an optical lens, in which… …
