Most seeker systems are designed for a single mission, making the cost of the seeker of prime importance. Uncooled detector arrays are significantly less expensive than their cooled counterparts but infrared optics remain a significant cost driver. We have designed and developed an optical system with a long focal length and short physical length that can be fabricated inexpensively; yet deliver the performance required of an infrared seeker. The Folded Molded Mangin is the result of several iterations that yielded a unique optical system that meets those requirements. The system can be fabricated using conventional diamond turning techniques or by molding.
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