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<!-- comment -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>amsikking: Microscope objectives</title>
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<section>
<a href="https://amsikking.github.io/">Home page</a>
<h1>amsikking: Microscope objectives</h1>
<a href="https://github.com/amsikking/microscope_objectives">GitHub repository</a>
<h2>Contents</h2>
<ul>
<li><a href="./numerical_aperture.html">Numerical aperture</a></li>
<li><a href="./working_distance.html">Working distance</a></li>
<li><a href="./immersion.html">Immersion</a></li>
<li><a href="./infinity_correction.html">Infinity correction</a></li>
<li><a href="./collection.html">Collection</a></li>
<li><a href="./transmission.html">Transmission</a></li>
<li><a href="./color_correction.html">Color correction</a></li>
<li><a href="./plan_correction.html">Plan correction</a></li>
<li><a href="./tube_lens.html">Tube lens</a></li>
<li><a href="./magnification.html">Magnification</a></li>
<li><a href="./field_of_view.html">Field of view</a></li>
<li><a href="./focal_length.html">Focal length</a></li>
<li><a href="./band_limit.html">Band limit</a></li>
<li><a href="./point_spread_function.html">Point spread function</a></li>
<li><a href="./optical_pixels.html">Optical pixels</a></li>
<li><a href="./mechanics.html">Mechanics</a></li>
<li><a href="./back_focal_plane.html">Back focal plane</a></li>
</ul>
<h2>Description</h2>
<p>
An introduction to <em>'infinity'</em> corrected microscope objectives.
These lenses are some of the most sophisticated and expensive 'stock' optics
around, and they make excellent building blocks for complex systems. However,
the specifics of the design and performance is usually unavailable. There are,
however, some general properties and characteristics we can infer and use for
instrument design.
</p>
<ul>
<li>To quickly see the basic properties of a particular objective lens simply edit
and run this Python script:
<a href="microscope_objective_properties.py">microscope_objective_properties.py</a></li>
</ul>
<figure>
<img src="figures/objective.png" alt="objective.png">
<figcaption>
(<a href="figures/objective_sketches.odp">.odp sketch</a>)
</figcaption>
</figure>
<p>
<strong>Note:</strong> not all objectives are <em>fully</em> infinity corrected.
According to <a class="citation" href="https://doi.org/10.1515/aot-2019-0002"
title="Systematic design of microscope objectives. Part I: System review and analysis; Y. Zhang;
p326, (2019)">Zhang 2019</a>
this limits the large manufacturers to Nikon and Olympus (Japanese), since
Zeiss and Leica (German) correct lateral color with the tube lens. The status
of Mitutoyo is unclear, since they are Japanese it is <em>assumed</em> they
adhere to full correction in the objective, although this should be verified
for sensitive applications.
</p>
</section>
</body>
</html>