| 摘要 |
A first lens, a first spacer ring, a second lens, a second spacer ring, and a third lens are disposed along an optical axis and from the subject side in the stated order within a holder main body. A flare stopper in the shape of a ring (a washer) is integrally formed with an inner periphery of the second spacer ring. The flare stopper is formed to protrude toward the third lens and positions a circular opening thereof close to a concave surface of the third lens, so as to cover a peripheral area of the concave surface. Accordingly, both the light toward a peripheral surface of the third lens and toward a peripheral surface of an exposure opening are blocked by the flare stopper.
|
