| 摘要 |
PROBLEM TO BE SOLVED: To obtain an optical system of a real image type finder having high finder magnification and securing long eye relief although it is made compact. SOLUTION: In this optical system of a real image type finder provided with a positive objective optical system 10, an erect optical system 20 and a positive eyepiece optical system 30, a subject image formed by the optical system 10 is reversed up and down and right and left by the optical system 20 and observed through the optical system 30. The optical system 10 includes a negative lens 13 arranged in a optical path nearer to the object side than the subject image forming position and having higher lateral magnification than 1.
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