Using Inventor 2015 I tried to design the holder for KAGRA QPDs that will be used for all our OpLev sensors.

Figures 1 and 2 show the 2 parts I'm forseeing to use. Basically (as in figure 1)  a vertical spacer to mount the QPD board using 4 screws, a long hole to use a L to fix to a translation stage and 2 holes on top to fix the 15pin D sub connector.

Figure 2 shows the 15 pins D sub holder.

The main point is that there will not be vertical or horizontal translation stage (similar to current situation). I'm also planning to put a laser line filter on the translation stage along the beam axis.

If this preliminary design is fine, I'll translate it into documents usable by manufacturer.