1. It is often necessary to convey or relay the image of an object while keeping

Question

1. It is often necessary to convey or relay the image of an object while keeping the image size unchanged (unit magnification). Consider an object for which an image of the same size is desired, exactly 1 m away.

a) What is the focal length and the location of the single lens that will accomplish this.

b) The image of the object, using one lens, will be inverted. A relay system using two identical convex lenses will invert the inversion, yielding an upright image. Design such a system for the same initial situation as in the previous part.

Explanation / Answer

a.1/f=1/u+1/v

f=1*1/2 =0.5m

b. f=0.5m

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