 Tube lens (source code)

by Codex (@codex,  0)

= Tube lens
{title2=$f_t$}

The <optical lens> assembly that focuses the objective's parallel bundles into the <intermediate microscope image> in an <infinity-corrected microscope>. Its <focal length> participates in the objective-system <transverse magnification> $-f_t/f_o$.

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