complicated optical system

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• Optical aberration — v · d · e Optical aberration …   Wikipedia

• Optical landing system — The Fresnel Lens Optical Landing System of Charles de Gaulle An optical landing system (OLS) (nicknamed meatball or simply, Ball ) is used to give glidepath information to pilots in the terminal phase of landing on an aircraft carrier.[1] From… …   Wikipedia

• Optical character recognition — Optical character recognition, usually abbreviated to OCR, is the mechanical or electronic translation of scanned images of handwritten, typewritten or printed text into machine encoded text. It is widely used to convert books and documents into… …   Wikipedia

• Optical mark recognition — (also called Optical Mark Reading and OMR) is the process of capturing human marked data from document forms such as surveys and tests. Contents 1 OMR background 2 OMR software 2.1 Open Source …   Wikipedia

• Optical power meter — in use An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually… …   Wikipedia

• Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …   Wikipedia

• Optical turnstile — An optical turnstile is a physical security device designed to restrict or control access to a building or secure area. Optical turnstiles are usually a part of an access control system, which also consists of software, card readers, and… …   Wikipedia

• system — noun 1 set of ideas/rules for organizing sth ADJECTIVE ▪ current, existing ▪ We re looking to replace the existing system. ▪ modern, new ▪ old fashioned …   Collocations dictionary

• Catadioptric system — A 150 mm aperture catadioptric telescope (Maksutov) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric… …   Wikipedia

• postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… …   Universalium

• Electro-optical MASINT — is a subdiscipline of Measurement and Signature Intelligence, (MASINT) and refers to intelligence gathering activities which bring together disparate elements that do not fit within the definitions of Signals Intelligence (SIGINT), Imagery… …   Wikipedia