Hi,

Yes, it depends on wavelength.
Actually it is described for visible region. This is of your interest.

Regards,
Vandana

On Mon, 4 Apr 2005, talkme wrote:

> Hii Everybody
>
> can any one tell me if i use
> Microscope's microobjctive (MO) to focus a laser
> beam,does it focus exactly according to its
> magnification number?
>
> i tell it different way,if i use He-Ne ~ 100 micron
> spot to focus with 50X MO,will it make the spot size 2
> micron in focal plane ?? is it wavelength
> dependent,like IR,VIS,UV..i am interested in VIS only.
>
> thanks in advance
>
> regards
> Dinesh
>
>
>
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