- #1
omg!
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hi everybody,
i would appreciate it if someone could clarify the concept of spherical aberrations in the context of high NA objectives in which use lenses are used that are not exclusively of the spherical type.
a common thing that you hear is that some objective is corrected for 0.17mm coverglass of n=1.518, or something like that. i have always interpreted it as in this example:
as the wave front that emerges from a point light source traverses the cover glass and immersion oil towards the objective, the phase relation is changed depending on angle so that the wave front gets deformed. what a "corrected" objective then does is to compensate for this deformed wave front.
is this correct?
thank you very much for your help!
i would appreciate it if someone could clarify the concept of spherical aberrations in the context of high NA objectives in which use lenses are used that are not exclusively of the spherical type.
a common thing that you hear is that some objective is corrected for 0.17mm coverglass of n=1.518, or something like that. i have always interpreted it as in this example:
as the wave front that emerges from a point light source traverses the cover glass and immersion oil towards the objective, the phase relation is changed depending on angle so that the wave front gets deformed. what a "corrected" objective then does is to compensate for this deformed wave front.
is this correct?
thank you very much for your help!