| 摘要 |
<p>PURPOSE:To improve the precision of positioning a stem by forming one or more recesses or projections in agreement with recesses or projections present in an object to be incorporated for positioning use in the stem rear. CONSTITUTION:One or more positioning recesses 4A, 4B are formed in agreement with projections comprised by an object to be incorporated. When a stem 1 is incorporated in an optical pickup, an optical communication module and the like, it combines for positioning use with projections provided in an object member to be incorporated to these recesses 4A, 4B and is positioned always in place. This design allows positioning of a stem easily and precisely.</p> |
