optical centre

0.01 sec.

centre, optical

That point (real or virtual) on the optical axis of a lens which is, or appears to be, traversed by rays emerging parallel to their original direction. Applied to an ophthalmic lens, it is commonly regarded as coinciding with the vertex of either surface (British Standard). See nodal points; vertex.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.

?Page tools

Printer friendly
Cite / link

Feedback
Add definition

Mentioned in	?		References in periodicals archive	?		Medical browser	?		Full browser	?
axometer decentration focimeter law monocentric point power prism protractor stereoscope An			The source of these rays lies precisely at the optical centre of NGC 253 and appears as a point to H. Astrophysicists detect gamma rays emitting from heart of distant ... by Asian News International Under the online service to renew a driving licence people must have an eye test and provide a passport copy along with a recent photo in either an Al Jaber Optical Centre or Yateem Optician. RTA launches site to streamline vehicle registration by XPRESS (United Arab Emirates) The optical centre of the lenses are not personalized enough to suit the prescription of each wearer of glasses. Is It Time for You Get Your Reading Glasses? by Suzanne Hughes / Business community			optic illusion optic laser optic lobe optic nerve optic nerve swelling optic neuritis optic neuropathy optic papilla optic pit optic radiation optic radiations optic righting optic righting reflex optic stalk optic system assessment optic thermometer optic tract optic vesicle optic zone diameter optical optical aberration optical activity optical allachesthesia optical appliance optical biopsy optical centre optical density optical disk optical dispensing optical image optical infinity optical interface optical isomerism optical isomers optical medium optical rotation optical surface Optical Tracking System optical wedge optical zone of cornea optically stimulated luminescence dosimeter opticele optician opticianry optico- opticochiasmatic opticociliary opticoele opticofacial reflex opticokinetic opticokinetic nystagmus			Optical Caliper Optical camera Optical camera Optical camera Optical camera Optical Carrier Optical Carrier 1 Optical Carrier 12 Optical Carrier 12 Optical Carrier 12 - 622.08 Mbps Leased Line Optical Carrier 1536 Optical Carrier 192 Optical Carrier 24 Optical Carrier 3 Optical Carrier 3 Optical Carrier 3 - 155.52 Mbps leased line Optical Carrier 3072 Optical Carrier 48 Optical Carrier 48 Optical Carrier 48 - 2.48832 Gbps Leased Line Optical Carrier 768 Optical Carrier level 3 - Concatenated Optical Carrier Level N Optical Carrier Level X Optical Carrier Levels Optical Carrier n Optical Carrier Supply Module Optical Carrier-Suppressed Single Sideband Optical cavity optical center optical centre optical channel optical channel Optical Channel Analyzer Optical Channel Data Unit Optical Channel Drop Unit Optical Channel Identification Optical Channel Identification Signaling Optical Channel Interface Optical Channel Laser Detector Optical channel monitor Optical Channel Multiplexer Optical Channel Payload Unit Optical Channel Performance Monitor Optical Channel Service Unit Optical Channel States Optical Channel Trail Optical Channel/Dedicated Protection Ring optical character reader optical character reader Optical Character Reader - Font A Optical Character Reader - Font B Optical Character Reader-Input Sub System optical character recognition optical character recognition optical character recognition Optical Character Recognition Equipment Optical Character Recognition Facility Optical character recognition software Optical character recognition software

Medical Dictionary

Free Tools:	For surfers: Free toolbar & extensions \| Word of the Day \| Help For webmasters: Free content \| Linking \| Lookup box \| Double-click lookup

Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.