optical flat

Also found in: Wikipedia

0.01 sec.

optical flat [′äp·tə·kəl ′flat]

(optics)

A disk of high-grade quartz glass approximately 2 centimeters thick, with a deviation in flatness usually not exceeding 0.05 micrometer all over, and a surface quality of 5 microfinish or less; used in determinations of surface contour and in comparison of lineal measurement.

A plane surface, with deviations from a plane surface generally not exceeding one-tenth of a wavelength of light, used to redirect light in a telescope or other optical instrument.

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

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found			Optical flats in glass, ceramic or metal are to 1/20 wave. Finishing services. (Materials) by Designfax Although surface finish is the same - equal to a quartz optical flat - grain structure is different because the ceramic powder grains are slightly smaller than the powder-metal chromium-carbide grains. Dueling gage blocks by Sprow, Eugene / Tooling & Production			optical diff optical diffraction velocimeter optical direction and ranging optical disc optical disc library optical disk optical disk storage optical dispersion optical distance optical Doppler effect optical Doppler tomography optical double optical double star optical drive optical electronic reproducer Optical Electronics optical element optical encoder optical exaltation optical fiber optical fiber cable Optical fibers optical fibre optical figuring optical filter optical flat optical fluid-flow measurement optical frequency Optical Frequency Standards Optical Furnace optical gage optical galaxy Optical Glass optical grep optical guided wave optical harmonic optical haze optical horizon Optical Illusions Optical Image optical indicator optical indicatrix optical information processor optical information system Optical information systems optical instrument optical interference optical isolator optical isomer optical isomerism optical Kerr effect			Optical Fiber, Conductive, Plenum Optical Fiber-Free Intravitreal Surgery System Optical fibers Optical fibers optical fibre optical fibre Optical Fibre Array Manufacture Optical Fibre Diameter Analyser Optical Fibre Ground Wire Optical fibre laser Optical Fibre Measurement Conference Optical Fibre Non-conductive Plenum Optical Fibre Non-conductive Riser Optical Fibre Plate Optical Fibre Protection Tubing Optical Fibre Technology Centre Optical fibres Optical fibres Optical Field Angle Distortion optical figuring Optical filter Optical filter Optical Filter Card Optical Filters Ltd. Optical Finger Navigation Optical Fire Detector Optical Fire Sensor Assembly Optical First Routing optical flat optical flint optical fluid-flow measurement Optical Fluorescence/Atomic Force Microscope optical frequency Optical Frequency Comb Generator Optical Frequency Comb Technology Optical Frequency Division Multiplexing Optical Frequency Domain Reflectometer Optical Frequency Interval Divider Optical Frequency Locked Loop Optical Frequency Standards Optical Front End Optical Furnace Optical Fuse optical fusion optical gage Optical Gaging Products, Inc. Optical Gain Equalization optical galaxy Optical Gateway Optical Gateway Crossconnect Optical Gateway Manager Optical Gigabit Ethernet optical glass optical glass

Encyclopedia

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.