Co-boresighted dual-mode SAL/IR seeker including a SAL spreader

In a co-boresighted SAL/IR seeker, the optical system and particularly the secondary lens and position of the SAL detector are configured to produce a well-corrected spot of laser energy at the SAL detector. A spreader is positioned between the secondary mirror/lens and the SAL detector, possibly on...

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Bibliographische Detailangaben
Hauptverfasser:	TAYLOR BYRON B, JENKINS DAVID D, MARKASON DAVID J
Format:	Patent
Sprache:	eng
Schlagworte:	AIMING AMMUNITION ANALOGOUS ARRANGEMENTS USING OTHER WAVES BLASTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION HEATING LIGHTING LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MECHANICAL ENGINEERING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING WEAPON SIGHTS WEAPONS
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Beschreibung
Zusammenfassung:	In a co-boresighted SAL/IR seeker, the optical system and particularly the secondary lens and position of the SAL detector are configured to produce a well-corrected spot of laser energy at the SAL detector. A spreader is positioned between the secondary mirror/lens and the SAL detector, possibly on the secondary mirror, away from the aperture stop and not in the optical path to the IR detector. The spreader is configured to spatially homogenize the laser energy to increase the size of the spot of focused laser energy at the SAL detector to set the system transfer function to meet slope requirements. Spatial homogenization serves to reduce both boresight shift and slope non-linearities. This approach greatly simplifies the time and labor intensive calibration of the SAL detector's system transfer function.