MICROSCOPE DESIGN

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MICROSCOPE DESIGN
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beam expander and objective
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• Why do we need a beam expander?
• What facts about the laser do we need to know?
• How much expansion do we need?
• What is lens J for? K? L?
• What physical constraints are important to keep
  in mind?
• How do we focus?

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• (beam size on sample)
• ------------------------------
• (beam size at lens L)
• (apparent focal length of objective)
• ------------------------------
• (focal length of lens L)
• note apparent focal length of objective 200
  mm/(magnification)

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for a 40x objective
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• What if we want to use the 100x objective? Do we
  have to change everything or start over?

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dichroic mirror, filter, and mirror
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• What is the dichroic mirror for?
• What is the filter for?
• Why is that mirror there? What does it do?

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lens Q and the CCD
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• What facts about the CCD do you need to know?
• Why must lens Q be 200 mm?