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Segment, Primary Mirror, Large Optics Demonstration Experiment

Object Details

Summary
This is a one-quarter segment of the primary mirror used in laboratory testing of the Large Optics Demonstration Experiment (LODE). The Department of Defense in 1977 initiated R&D into a space-based chemical laser program (SBCL), whose main efforts included development of an Alpha laser and LODE. LODE was designed to demonstrate critical beam control and optics technology to sample the laser beam and correct distortions to produce a high-quality beam. Lockheed received the LODE contract and the newly-established Strategic Defense Initiative Organization assumed responsibility for the SBCL program in 1984.
Lockheed built a laboratory bench system called a "brassboard" for LODE, which included the primary mirror and associated hardware, and a diagnostic collimator (a device that narrowed the beam). It conducted several successful tests by 1990. However, with the end of the Cold War the justification for deployment of a complete defensive shield against a Soviet ballistic missile attack no longer existed and the SBCL was cancelled.
Lockheed built this artifact and Ray Bell donated it to the Museum in 2019.
Data Source
National Air and Space Museum
Manufacturer
Lockheed Martin
Credit Line
Gift of Raymond and Carrie Bell
Materials
Non-Magnetic White Metal
Ferrous Alloy
Glass
Plastics
Reflective Coating
AdhesivePaint
Adhesive Tape
Solder
Dimensions
3-D: 27.9 × 51.4cm (11 in. × 1 ft. 8 1/4 in.)
Type
EQUIPMENT-Test
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
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