| 摘要 |
A relay zoom system ZL includes, in order from an object side, a first lens group G1 having a positive refractive power and a second lens group G2 having a positive refractive power. Furthermore, in the relay zoom system ZL, the first lens group G1 and the second lens group G2 are each made up of at least two positive lenses and one negative lens. The first lens group G1 and the second lens group G2 in the relay zoom system ZL are configured so as to move along an optical axis when magnification is varied from a lower magnification edge state to a higher magnification edge state.
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