| 摘要 |
An ocular optical system comprising at least five lens elements, and including, in order from a display surface side to an exit side, a first lens unit having negative optical power, a second lens unit having positive optical power, and a third lens unit having positive optical power, wherein the second lens unit moves along an optical axis for adjustment of diopter scale, and a finder optical system comprising a display device having a display surface on which an image is displayed, and the above-mentioned ocular optical system. |
