| 摘要 |
An eyepiece comprises, in the following order from the image side, a first lens unit G1 including a negative lens with a concave surface facing the image, a second lens unit G2 including a cemented lens composed of a negative lens and a positive lens arranged in the mentioned order from the image side, a third lens unit G3 including a cemented lens composed of a positive lens and a negative lens, and a fourth lens unit G4 including a positive lens.
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