telecentric question

Art Adams
 

>Does having a microlens increase the need for telecentricity or decrease it?

 

I’m sure Deanan can better speak to this, but from what I’ve been told, sensors with micro lenses benefit from telecentricity, both because of possible cross talk between the lenses but more often cross talk when light rays strike a photo site after passing through another photo site’s lens.

 

The cover-glass-as-optical-element is a big deal, regardless.

 

>Does every sensor have them anyway?

 

They’ve been around for a long time. I believe the original intent was to make photo sites more efficient by compensating for the fact that there are gaps between photo sites occupied by other things, and that results in inefficiencies when gathering photons.

 

My assumption is that if micro lenses were used in 20-year-old broadcast cameras (and they were) then the technology should be common enough that there wouldn’t be a reason not to use it. But you know what happens when we assume…

 

Art Adams

Cinema Lens Specialist

 

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