Bonjour adinnin,
What I would do:
Instead of creating hundreds of lights, create maybe a dozen of spot lights. Place these spots way behind the "real" source (your arrays). Like this:
The green rectangle is the actual geometrical light array.
On these spots, put a volumetric light. However, to make it appear like many small lights instead of one big cone, apply a slide projector. A slide projector is like a gobo: it is a bitmap file that you create in Photoshop and that define the opacity and color of the light. The white areas let the light pass through, and black areas block it. It is in this file that you'll design your multiple emitters.
So to apply the slide projector select your spot, and do Light > FxDirector, check Projector in the middle section of the FxDirector window, choose Slide Projector in the top menu, click on Select Picture File, and finally select your file.
Of course it will be a lot of tweaking in Photoshop to place the white spots. But the result is there.
Another of creating the multiple light beams is to cut holes into the geometry of the rectangles instead of using Slide Projectors. It's up to you.
Now, because you place the spot way behind where the beam should start, you'll have to play with the Start Distance of the Volume Light, to make it start at your arrays.
Hope this helps
Salutations - Cheers
Bernard Lebel