Opics: making lantern's

  • Thread starter pmmiller14
  • Start date
10
0

Main Question or Discussion Point

I am really stuck on what to do.

"The completed lantern needs to produce a tightly focussed spot of light on a stage, it is positioned 12m horizontally away from it and 5m above it. It also has to fit a box that is 30cm long"

Parts avaliable:
light bulbs
light bulb holders
wiring
convex lenses - focal lengths of 2cm, 10cm and 50cm.
concave mirrors - focal lengths of 5cm, 20cm

could anyone help me with what i have to do to create the lantern.
 

Answers and Replies

243
1
This would make an excellent Gaussian Beam Optics question using the ABCD law.
How well do you know your matrix techniques for ray propagation?
 

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