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Playing with gang lens of PLPM4L MDP chip

Light superglue

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This is to continue the old thread with proper name of the chip what was not on ebay 1 year ago when I got it from taobao and started playing: https://laserpointerforums.com/threads/osram-60w-multilaser-chip-with-24-beams-jlm450nm.106325/
Now its commercial name is PLPM4L.

In an attempt to make beams parallel from this MDP (Multi Dye Package) I took off the gang lens and installed it on a custom made 2´´ Al round into Thorlabs slip plate positioner allowing to shift 2mm along X and Y axes.
Then tried to find a good position shifting all ways (circular and along Z axis as well) but all I could get was separation of lines at the wall while all beams became not parallel any more.

This means that the gang lens is at optimum position and there is no use to remove it.
 

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Light superglue

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Now I did similar experiments with NUBM35 MDP chip.

But all pics are in the thread about NUBM38 (which is almost the same as NUBM35):
 

aaronnoraa

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Jun 20, 2015
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So I'm guessing that this has shown that the diodes themselves are mounted at angles to one another, not parallel, making it impossible to remedy for a bad array?
 

Light superglue

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Yes, impossible for this array because there are no such small lenses to put over beams.
However maybe possible with bigger MDP like NUBM36. The problem is that optic shop in ali which is selling small lenses does not answer my questions...
 




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