Find the longest focus distance, f, of the lenses so that it is possible to trap a ray of light inside the circle!Click here to read the solution.
Sunday, March 1, 2009
Trapping Lenses
Some identical thin convex lenses are arranged at edge of a full circle of radius R, according to the picture below. The lenses have equal angle spacing of θ (θ<<1). Each lens has aperture length of D (D<<R).
Find the longest focus distance, f, of the lenses so that it is possible to trap a ray of light inside the circle!
Click here to read the solution.
Find the longest focus distance, f, of the lenses so that it is possible to trap a ray of light inside the circle!Click here to read the solution.
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