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SVETLOBA - GEOMETRIJSKA OPTIKA<br />
•VRSTE LEČ<br />
r 2<br />
r 1<br />
f – goriščna razdalja leče<br />
1/f – lomljivost leče [m -1 =dptr (dioptrija)]<br />
r 2<br />
r 1<br />
1 1 1<br />
+ =<br />
a b f<br />
1 ⎛ 1 1 ⎞<br />
= ( n − 1)<br />
⎜ + ⎟<br />
f r r<br />
⎝ 1 2 ⎠
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