| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens for a microscope, which achieves a high zoom ratio and a size reduction and has high imaging performance, and to provide a microscope that has the zoom lens.SOLUTION: The zoom lens for the microscope includes, in order from an object side, a first lens group G1 with positive refractive power, a second lens group G2 with negative refractive power, a third lens group G3 with positive refractive power, and a fourth lens group G4 with negative refractive power. The fourth lens group G4 consists of, in order from the object side, an eleventh lens group G4a with positive refractive power, a twelfth lens group G4b with negative refractive power, and a thirteenth lens group G4c with positive refractive power. In varying power from a low varying power end to a high varying power end, the second and third lens groups G2 and G3 move in the direction of an optical axis. The zoom lens satisfies predetermined conditions. |
