asteroza + reflector   45

Interesting deployable antenna reflector using a shape memory polymer for the reflector ribs (so sorta looks like a clam shell), and an active focus subreflector to correct and beam steer.
newspace  deployable  antenna  reflector  space  cubesat  collapsible  folding  shape  memory  polymer 
march 2018 by asteroza
crowdfunded student research cubesat called mayak, which will deploy a large reflector to make an artificial star in LEO
russia  mayak  cubesat  artificial  star  solar  reflector  space  crowdfunding  student  research 
july 2017 by asteroza
MIT technology used to shrink tumor | MIT News
Omniguide is producing high power laser fiber guides for IR lasers, for use in medical applications, using advanced hollow fibers with the hollow core coated by the new omnidirectional mirrors described here.
CO2  IR  laser  fiber  tunable  mirror  reflector  omnidirectional  materials  science  research  technology  Delicious 
november 2016 by asteroza
An Overview – KYMIRA Sport
Uh, heat generally is IR, so is this some sort of selective frequency converter, or are they simply putting an IR reflector in the clothing? Reading the original copy made me think this was using some sort of fabric that emits heat when stretched, but that doesn't seem to be the case.
IR  reflector  insulating  clothing  apparel  Delicious 
june 2016 by asteroza
New laser-based aircraft tracking system could aid disaster relief efforts - EPSRC website
Some sort of LCD shutter reflector to reduce transmission power requirements for one side of the link?
laser  freespace  free  space  optical  communication  lasercomm  UAV  drone  semipassive  reflector  optics  research  technology  Delicious 
march 2016 by asteroza
Hyperion Project
Some sort of LCD shutter or modulated quantum well retroreflector to reduce transmission power requirements for one side of the link?
laser  freespace  free  space  optical  communication  lasercomm  UAV  drone  semipassive  reflector  optics  research  technology  hologram  lens  MQW  modulated  quantum  well  retroreflector  reflector  Delicious 
march 2016 by asteroza
Tailoring high-temperature radiation and the resurrection of the incandescent source : Nature Nanotechnology : Nature Publishing Group
Using an IR reflector photonic crystal rather than conventional glass in a lightbulb recycles IR energy back into the filament, making efficiency equal or potentially better than current LED's.
photonic  crystal  IR  reflector  incandescent  filament  lightbulb  materials  science  research  technology  Delicious 
january 2016 by asteroza
Black Sun Planetary Solutions
Interesting collector design, based on on a blackbody cavity concept. Reduces costs since it doesn't use a vacuum tube receiver core, along with a low precision tolerant mirror reflector geometry. Seems to still require single axis tracking though, but 10 degrees is a lot easier to implement via ratchet mechanisms rather than continuous jackscrews.
CSP  concentrating  solar  thermal  power  generator  blackbody  cavity  parabolic  reflector  collector  design  green  energy  funnel  CPV  Delicious 
december 2013 by asteroza
One Earth Designs
Apparently they have 2 patents on a 3D formable polymer mirror with 90% reflectivity (in visible/IR?)
polymer  technology  parabolic  hardware  solar  research  reflector  science  mirror  gril  gear  materials  camping  cooking  survival  cooker  Delicious 
july 2013 by asteroza
Stanford scientists develop new type of solar structure that cools buildings in full sunlight
Weird passive panel cooling utilizing high reflectivity and spectrum gaps. Won't do you a lot of good if you are directly facing the heat source in question though...
panel  technology  thermal  narrowband  solar  research  heat  reflector  nanophotonic  science  materials  passive  broadband  emitter  management  nanotechnology  Delicious 
april 2013 by asteroza
ビームダウン式太陽熱集光装置( 太陽エネルギー ) - 三鷹光器株式会社
Interesting beam down double reflector/concentrator design, which keeps the operative focus point low to the ground. Though that does constrict your heliostat field design and sight angles, plus you will probably need to cool the upper mirror.
mirror  hardware  japan  concentrator  downward  generator  power  solar  double  heliostat  reflector  design  Delicious 
march 2013 by asteroza
NASA - SpiderFab: Process for On-Orbit Construction of Kilometer-Scale Apertures
Interesting use of a 3D printer in space, but they talk abut antennas. So probably not able to do mirrors yet. Also claim radiators, which would be a neat trick.
NASA  SpiderFab  orbital  factory  3D  printer  large  gossamer  space  strucuture  manufacturing  research  deployable  antenna  radiator  reflector  arpeture  construction  infrastructure  Delicious 
september 2012 by asteroza
SpaceGroundAmalgam, LLC
Won a NewSpace business plan competition for developing large diameter inflatable satellite reflector antennas.
space  inflatable  antenna  reflector  materials  science  research  technology  communications  Delicious 
august 2012 by asteroza
Title Page
Claiming a low cost double reflector mirror arrangement lets these guys do high concentration levels. Doesn't really solve the tracking problem, at first glance, but the same plastic shape trick could be used with a trough collector. Interesting that they use a clear plastic cover lens, but what about age or dust related degradation?
energy  green  CPVT  PVT  CPV  CSP  generator  power  solar  concentrating  reflector  mirror  double  cassegrain  Delicious 
august 2012 by asteroza
Why Solar Power
Some kind of hybrid setup, using CPV with gaseous coolant driving a gas turbine, with waste heat from the turbine finally recovered in a water heater like a microturbine CHP rig.
Kalahari  tribrid  tri-brid  hybrid  CPV  concentrating  PV  solar  thermal  collector  reflector  CHP  heat  storage  turbine  power  generator  Delicious 
december 2010 by asteroza
Solar Cogeneration, Cogen, Power, Hot Water | Cogenra Solar
Basically this is a water cooled combined heat and power CHP concentrating solar PV trough design that recovers PV coolant heat for domestic hot water use. The low cost innovation seems to be the fresnel lens style segmented flat panel parabolic glass mirror array that makes up the trough, since flat mirrors in long planar sheets are cheap. New version also does AC via an adsorption chiller
photovoltaic  thermal  trough  concentrating  heat  cogeneration  trigeneration  cooler  cooling  power  generator  Cogenera  CHP  fresnel  parabolic  chiller  CSP  HVAC  green  solar  adsorption  reflector  combined  AC  PV  hybrid  energy  Delicious 
november 2010 by asteroza
A nice little system using LED lighting to also transmit data, combined with a custom small form factor retroreflector/receiver (not much bigger than existing IRda sensors). They are also doing PLC and DC PLC work, so that the overhead lamp assembly contains not only the LED and transmitter encoding circuits, but also a PLC modem for transmitting data over the power supply circuit so you can retrofit into exisitng lighting systems without running new data cables.
LED  overhead  lamp  lighting  light  japan  communication  optical  transmission  wireless  hardware  electronics  devices  parabolic  compact  retroreflector  reflector  receiver  technology  DC  PLC  data  modem  Delicious 
june 2010 by asteroza
Cool Earth Solar: Reshaping Solar Energy
Hrm, I wonder if you could make an oversized air inflated structure to support long rows of these things in an airborne pattern, like a giant inflatable wall..
technology  green  energy  power  generator  plastic  solar  concentrator  aluminum  film  inflatable  concentrating  reflector  thin  cool  balloon  earth  CSP  pet  recyclable  Delicious 
february 2009 by asteroza

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