Ch2Sec3BW

# Ch2Sec3BW - THE FIBER FORUM Fiber Optic Communications...

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THE FIBER FORUM Fiber Optic Communications JOSEPH C. PALAIS PRESENTED BY

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Joseph C. Palais 2.3 2 Section 2.3 Imaging d o focal point β d i I α O The distance from the object O to the lens is d o The distance from the image I to the lens is d i . β
Joseph C. Palais 2.3 3 IMAGING The position of the object and focused image are related by the thin lens equation . f d d i o 1 1 1 = + (2.5) Proof: Using the diagram on the previous slide, we find the following.

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Joseph C. Palais 2.3 4 IMAGING tan , Where M is the magnification factor. Also tan (2.6) i o i o i i o O I I d M d d O d O I f d f From d I MO O d β α = = = = = = - = = (2.6)
Joseph C. Palais 2.3 5 IMAGING i o o i o i i o i i i o i i o i d d f d d f d d f d d d f f d f d d d f f d O d d f O 1 1 1 1 1 1 1 1 + = = - = - = - - = - = This proves the thin lens equation.

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Joseph C. Palais 2.3 6 1 1 1 / 1 / 1 1 1 1 1 1 - = - = + = + = + = f d M so f d M M d d f d then d d f o o i o o i o RELATIONSHIP BETWEEN OBJECT DISTANCE AND MAGNIFICATION (2.5) (2.7)

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## This note was uploaded on 05/11/2010 for the course EEE EEE-448 taught by Professor Palais during the Fall '09 term at ASU.

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Ch2Sec3BW - THE FIBER FORUM Fiber Optic Communications...

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