Re: focused laser beam size on stage

Posted by Pascal Weber on
URL: http://confocal-microscopy-list.275.s1.nabble.com/focused-laser-beam-size-on-stage-tp7578908p7578936.html

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The black ring is not normally done in plastic but metal (Zeiss objectiv).
Normally the stand contains a lens that compensates for filling the pupil for
each objectiv (except Nikon ?!!). The laser power is not concentrated on this
ring.