| 摘要 |
<p>An optical apparatus is provided which comprises: a semiconductor laser having first and second emitting points for light emitted in the junction plane and perpendicular thereto, respectively; a cap element covering the semiconductor laser and having an aperture therein; means to produce focused light; and at least one plane-parallel, light transmitting body arranged in the aperture of the cap element to cause the astigmatism of the optical apparatus to be substantially zero.</p> |
