| 摘要 |
<p>A screw component provided with a lens holder (2) and a lens barrel component which are engaged with each other through threads, and also with projections (14, 15) provided to both the flanks (9, 10), respectively, of a screw thread (8) of the lens holder (2). When the lens holder (2) is engaged with the lens barrel component through threads, the screw thread (8) of the lens holder (2) makes contact with both the flanks of the screw thread of the lens barrel component, and this reliably prevents the lens holder (2) and the lens barrel component from being positionally displaced from each other.</p> |
