| 摘要 |
An optical apparatus is disclosed which includes an integrally-formed rack that can be manufactured easily even when a tooth portion of the rack has a drawing angle with respect to a lead screw. The apparatus includes a holding member holding an optical member, a rack attached to the holding member, and an actuator rotating the lead screw. The rack is integrally formed and includes an attachment portion for being attached to the holding member, first and second tooth portions engaging with the lead screw so as to sandwich the lead screw therebetween, and an elastic connecting portion connecting the attachment portion and the second tooth portion. The second tooth portion is formed to have a gap from the first tooth portion such that the gap is narrowed with distance from the attachment portion. The connecting portion is provided with a protrusion protruding toward the first tooth portion.
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