| 摘要 |
<p>The porro prism (1) has two interconnected reversing prisms (4,5) that are provided with two reflective inclined surfaces (6-9) for a beam path between an entry surface and an exit surface. The exit surface of one reversing prism and the entry surface of the other reversing prism form respective connecting surface. The connecting surface lies oblique to optical axes of the beam path (2,3,15,16,17) that penetrate the exposed entry and exit surfaces of the reversing prisms.</p> |
