Cryogenic Deformable Mirrors, two 37-ch and one 349-ch.

1
Small Business Innovation Research
NGST Cryogenic Deformable Mirror Demonstrator
Xinxtics Inc. Devens, MA
Designed, assembled, and tested cryogenically
active deformable mirrors specific to the needs
of the NGST. Developed a cofired actuator process
specific to companys cryogenic electroceramic.
Presently, building a cryogenically active 349-ch
engineering model DM using cofired cryogenic
actuators and designing a cryogenically active
high-density modular mirror.
INNOVATION

• ACCOMPLISHMENTS
• Developed an electrostrictive electroceramic
  formulation with stroke capabilities between 35
  and 65K, specific to the needs of Next-Generation
  Space Telescope (NGST).
• Developed a piezoelectric electroceramic
  formulation with stroke capabilities between 35
  and 375K.
• Designed and built two cryogenic 37-channel (ch)
  deformable mirrors (DM) using cut bond
  cryogenically active actuators.
• Designed and built a cryogenic 349-ch engineering
  model DM using cut bond actuators (maintaining
  a 7mm actuator spacing).
• Developed a cofired actuator technology specific
  to the cryogenically active electroceramic
  formulation.
• Designed and built a cryogenic testing chamber
  capable of measuring DMs up to 15 inches in
  diameter.
• Successfully cycled the 37-ch DM to 35K,
  transitioning lessons learned to the 349-ch
  cryogenic DM with cofired actuators presently
  being assembled.
• Using one of the cryogenic deformable mirrors,
  possible mirror figure control was demonstrated
  at 50K.
• COMMERCIALIZATION
• Will market cryogenic actuator stacks,
  positioners, and stages using cofired and cut
  bond assembly technology.
• Will market deformable mirrors for cryogenic
  applications.

Cryogenic Deformable Mirrors, two 37-ch and one
349-ch.

• GOVERNMENT/SCIENCE APPLICATIONS
• Deformable mirror for the NGST.
• DM for satellite surveillance systems, general
  amateur and professional observatory use at all
  nighttime temperatures without special thermal
  control.
• Cryogenic actuators for precision alignment of
  devices in thermal vacuum chambers at all
  temperatures.
• Enhanced optical stability of cryogenic
  structures using the new generation
  electroceramic to provide subnanometer control.

Marshall Space Flight Center Subtopic 11.03,
Adapt. Optics Correction System Technology April
2001 - SS-8-047
Contacts MSFC, Tom Knight 256-544-5353 Xinetics
Inc., M.L. Mulvihill 978-772-0352 x210 1996
Phase II NAS8-98073