PR2/PR3 OSEM report 20150313
About reducing diameters of LED/PD holders' cylinder parts, I asked NAOJ/ATC ME shop to get a cost estimation from an outside company, and they got it, and was very cheap, so this work will be just ordered to the company.
Please check the following files showing the modifications of OSEM LED and PD holders for PR2 and PR3 (hope - only) . The concept is that using already exisiting parts as far as possible anyhow!
The design will be checked by VIS people, and then a few test parts will be purchased.
Some parts of the LED assy and all parts of the PD assy have compatibilites with new (unapproved by VIS still) design of OSEM LED/PD holders in the following.
Hope they are approved immediately, and then I'd like to start with purchasing a few samples. I have already got some cost estimations from several companies and started comparison.
The reason why some parts have JGW-Dxxx, but others not is, I guess, there would be some difference in the concept for controlling things between VIS and me.
Took a pic of two LED candidates:
The packages seem similar forms, but be careful, positions of the anode and cathode are opposite!! to the flange's boss.