| 摘要 |
<p>PURPOSE:To support a lens easily with simple constitution and to obtain accurate information by supporting elastically the lens, which receives a reflected beam from a medium, by a supporting body. CONSTITUTION:A ball lens 26 is supported elastically by an elastic part 27 of an outer case 19 which is the supporting body. A slit 27a is formed on the elastic part 27 to increase the elastic force of the elastic part 27. When the ball lens 26 is held between elastic pieces 27b, the optical axis of the ball lens 26 and an optical axis l of an optical fiber 24 coincide with each other, and the reflected beam from the medium where optical information is recorded is led to the optical fiber accurately through the ball lens 26.</p> |
