Autocollimation

Autocollimation

Autocollimation is a process by which the focal length of a diverging lens is determined. Autocollimation involves placing a light source at the focal length of a converging lens on one side and a screen at the same distance on the other side so that the image produced is the sharpest possible image. When this is achieved, the screen is replaced with a mirror and the diverging lens is inserted between the converging lens and the mirror so that the light rays that hit the mirror are parallel to the principal axis and when the light returns through the diverging and converging lenses, it produces a sharp image on top of the luminous object.

ee also

*Autocollimator

References

*"College Physics" by Wilson and Buffa


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  • Autocollimation — L autocollimation est une méthode permettant de déterminer la position du foyer d un système optique. Elle nécessite, en plus du système, l utilisation d un miroir plan et d une source ponctuelle de lumière. Dans le cas d une lentille convergente …   Wikipédia en Français

  • autocollimation — autokolimacija statusas T sritis fizika atitikmenys: angl. autocollimation vok. Autokollimation, f rus. автоколлимация, f pranc. autocollimation, f …   Fizikos terminų žodynas

  • autocollimation spectrograph — autokolimacinis spektrografas statusas T sritis fizika atitikmenys: angl. autocollimating spectrograph; autocollimation spectrograph vok. Autokollimationsspektrograph, m rus. автоколлимационный спектрограф, m pranc. spectrographe autocollimateur …   Fizikos terminų žodynas

  • autocollimation — /aw toh kol euh may sheuhn/, n. Optics. the process used in an autocollimator. [AUTO 1 + COLLIMATION] * * * …   Universalium

  • autocollimation — noun The collimation of a telescope by means of a plane mirror See Also: autocollimator …   Wiktionary

  • autocollimation — au·to·collimation …   English syllables

  • autocollimation — | ̷ ̷ ̷ ̷+ noun ( s) Etymology: aut + collimation : the process of collimating an instrument (as a telescope) having objective and cross hairs by directing it toward a plane mirror and adjusting the lens and cross hairs so that the latter… …   Useful english dictionary

  • spectrographe à autocollimation — autokolimacinis spektrografas statusas T sritis Standartizacija ir metrologija apibrėžtis Spektrografas su autokolimaciniu okuliaru. atitikmenys: angl. autocollimating spectrograph vok. Autokollimationsspektrograph, m; Littrow Spektrograph, m rus …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • spectrographe à autocollimation — autokolimacinis spektrografas statusas T sritis Standartizacija ir metrologija apibrėžtis Spektrografas, kuriame taikomas autokolimavimo principas, t. y. atsispindėjusios spinduliuotės grįžimas tuo pačiu keliu atgal. atitikmenys: angl.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • spectrographe à autocollimation — autokolimacinis spektrografas statusas T sritis Standartizacija ir metrologija apibrėžtis Spektrografas, kurio veikimas pagrįstas atsispindėjusio šviesos pluošto grįžimu tuo pačiu keliu atgal. atitikmenys: angl. autocollimating spectrograph vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

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