Convex+lens
41positive lens — noun : a lens that is thickest at its center and thinner toward its outer portions thus causing light which passes through it to converge : converging lens * * * Optics. See converging lens. * * * positive lens, a convex lens that converges light …
42plano-convex — pla·no con·vex (.)kän veks, kän ., kən adj flat on one side and convex on the other <a plano convex lens> …
43fisheye lens — fish′eye lens [[t]ˈfɪʃˌaɪ[/t]] n. pht a hemispherical plano convex lens for photographing in a full 180° in front of the camera …
44fisheye lens — Photog. a hemispherical plano convex lens for photographing in a full 180° in all directions in front of the camera, creating a circular image having an increasing amount of distortion from the center to the periphery. [1960 65] * * * …
45plus lens — convex l …
46Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …
47concavo-convex — [kän kā′vōkän veks′] adj. 1. concave on one side and convex on the other 2. Optics designating a lens whose concave face has a greater degree of curvature than its convex face, so that the lens is thinnest in the middle …
48Fresnel lens — A Fresnel lens (pronounced [ frɛz.nəl] or [freɪ nɛl] ) is a type of lens invented by French physicist Augustin Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large aperture and short focal… …
49Double-Gauss lens — The double Gauss design with optical ray traces The double Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane. Contents 1 Design …
50Fisheye lens — In photography, a fisheye lens is a wide angle lens that takes in an extremely wide, hemispherical image. Originally developed for use in meteorology [Hill, R. 1924. A lens for whole sky photographs. Quarterly Journal of the Royal Meteorological… …
