Patent ID: 9400369
Filing Date: 2016-07-26
CPC Classification: G02B,G03F

Claim Text:
1. An optical apparatus including an optical system having a plurality of lenses and configured to be able to adjust a part of lenses along an optical axis, the optical apparatus comprising: a first holder configured to hold the part of lenses; and a second holder configured to hold the first holder, wherein one holder of the first and second holders has a first adjustment face group and a second adjustment face group, wherein the one holder is rotatable relative to the other holder different from the one holder, wherein the first adjustment face group includes a plurality of first adjustment faces of which each position on the optical axis is different, wherein the second adjustment face group includes a plurality of second adjustment faces of which each position on the optical axis is different, wherein the second adjustment face group is provided along a first rotation direction from the first adjustment face group, wherein the other holder has a first abutting portion which abuts against any one of the plurality of first adjustment faces and a second abutting portion which abuts against any one of the plurality of second adjustment faces, and wherein a position on the optical axis of an adjustment face arranged at an end in a second rotation direction opposite to the first rotation direction among the plurality of first adjustment faces is approximately equal to a position on the optical axis of an adjustment face arranged at an end in the first rotation direction among the plurality of second adjustment faces.