| 摘要 |
A sensor 20 for a missile seeker includes a primary, concave reflector 40 that is reflective to RF waves 70 and to another kind of waves 90 such as infra red rays, but that includes a transmissive region 100 through which RF waves 70 can pass. A secondary, convex reflector 50 is reflective to RF waves 70 but transmissive to IR waves 90, and is arranged facing the primary reflector 40 to further reflect RF waves 70 through the transmissive region 100 of the primary reflector 40. An RF detector 60 is arranged on the opposite side of the primary reflector 40 from the secondary reflector 50 and arranged to detect the RF waves 70 arriving through the transmissive region 100 of the primary reflector 40. A second detector 80, sensitive to the IR waves 90, is arranged on the opposite side of the secondary reflector 50 from the primary reflector 40 and is arranged to detect the IR waves 90 after they have been reflected by the primary reflector 40 and have passed through secondary reflector 50. The arrangement provides low losses to the IR rays and can double the range of the detector. |
