| Space Phonics
"Space" or "Universe" is a final fronteer asmany people
said. Then the space is also important field for photonics. There are so many
things can be done with photonics technology and so many photonics technologies
required for "space" application.
Recent progress in many engineering field made "space technology" much advanced. Most of industrial devices become smaller and more functional with the size. Furthermore, they are very efficiant to avoid large energy consumption.
It is the time for us to utilize the engineering progress to the space
application. Small satelite system is the one of the application.50cm ize
with 50kg to 100kg of weight is the target size of such small satelite
system. Someone at a space related conference said that the small satelite
is like a cell phone containig camera, GPS, transmitter, sensors, and battery,
all coontroled with a tiny CPU. The small satelite has similar configuration
except it has to fly in vacule and high and low temperature enviroment.
Another important situation is that the small satelite can be transfered
to the space within a well configured rocketcargo priventing typical big
vibration during the launch. Thus the satelite is not require strong structures
which can servive in the space without any gravity.
The small stelite system requires good devices to make the system compact and functional. We are working for a telescope system with large diameter of concave primary mirror and short telescope structure. As the size of the satelite becomes smaller, the telescope having good spatial resolution must be compact enough. That is a challenge we need to do with current photonics technologies.
We work with Harada fine mechanics company inJapan to make the small telescopes
to be commertialized for sale.
On Dec.2012, there was an exibition called JA 2012. Namely, Japan Aeroscpace
We have demonstrated a proto-type of the telescope with 200mm diameter
length incorporating seberal cameras to measure variou information of the
earth from the space.
Under a collaboration with the graduate school for photonics, we have developed
a new type of ceramic concavemirror with is thermally stable in the space.
The ceramic does not expand much at around room temperature tested by a
wavefront analysis system.