- periscopic lens
- a lens that has a 1.25D base curve.
Medical dictionary. 2011.
periscopic lens
Look at other dictionaries:
periscopic — adj. of a periscope. Phrases and idioms: periscopic lens a lens allowing distinct vision over a wide angle. Derivatives: periscopically adv … Useful english dictionary
periscopic — adjective Date: 1804 1. providing a view all around or on all sides < periscopic lens > 2. of or relating to a periscope … New Collegiate Dictionary
Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil … Medical dictionary
concavoconvex lens — a lens that has one concave surface and one convex; the concave surface is of greater curvature than the convex. Called also periscopic convex l., converging meniscus l., and positive meniscus l … Medical dictionary
convexoconcave lens — a lens that has one convex and one concave surface; the convex surface is of greater curvature than the concave. Called also periscopic concave l., diverging meniscus l., and negative meniscus l … Medical dictionary
concave lens periscopic — convexoconcave l … Medical dictionary
convex lens periscopic — concavoconvex l … Medical dictionary
Optical Instruments — (Roget s Thesaurus) < N PARAG:Optical Instruments >N GRP: N 1 Sgm: N 1 optical instruments optical instruments Sgm: N 1 lens lens meniscus magnifier Sgm: N 1 microscope microscope megascope tienoscope GRP: N 2 Sgm: N 2 spect … English dictionary for students
periscope — /per euh skohp /, n. 1. an optical instrument for viewing objects that are above the level of direct sight or in an otherwise obstructed field of vision, consisting essentially of a tube with an arrangement of prisms or mirrors and, usually,… … Universalium
lente periscópica — Eng. Periscopic lens Lente esférica cuyas superficies divergente y convergente tienen una potencia de +1,25 y 1,25 dioptrías respectivamente y cuyos meniscos se encuentran muy curvados … Diccionario de oftalmología
