| 摘要 |
<p>The invention relates to a homing seeker head for a missile, including two channels (semi active laser, SAL, and infra red, IR) for detecting light beams. The seeker head includes an entry window 101 which may be made of ZnS, a first sensor 107 for detecting the beams for a first, IR channel; a second sensor 108 for detecting the beams for a second, SAL channel and a catadioptric optical module having an optical axis V and including a primary mirror 104 and a secondary mirror 1052. The first sensor 107 is located downstream from the secondary mirror 1052. The second sensor, 108 is located coaxially with the first sensor 107 relative to the optical axis V, between the window 101 and the secondary mirror 1052. The second, SAL sensor may receive beams directly from the window (fig.4). In a further embodiment the secondary mirror 1051 (fig.3) reflects a portion of the beams towards the first, IR sensor and passes a portion of the flux from the primary mirror towards the second sensor. The invention avoids the use of laterally offset detectors and dichroic plates of prior art (fig.1).</p> |
