Hello,
Pretty new to this, and trying to design a lens package.
However, I have a problem with lenses overlapping when designing.
I like the radii to be the same, but I would like to “cut” the lens.
Changing the thickness won’t do it
Please advise.
Br, Oscar
In the Lens Data Editor, change the Clear Semi-Diameter, Chip Zone and Mech Semi-Diameter.
However your second surface probably isn’t manufacturable. Use a higher index glass so the radii are longer. Or split that first element into two elements.
And the 2nd element isn’t manufacturable, it’s too thin.
Thanks!
I keep getting this when I to change the Mech. Semi-Diameter.
Regarding lens thickness - I’m using an element that is used in another product we use, and the dimensions are correct. Tried it with a piece that was alot thicker, but it didnt work.
I can increase mech diameter, but not decrease. If I try to put a number in Chip Size, it will just go back to 0.
Are you letting the Clear SD float? You probably have to set it manually.
For a fisheye you also need to set Ray-aiming and vignetting.
Attach your file if you can.
Floating Aperture, that was it.
Now it all works. Thank you so much!
Br, Oscar
While I have you on the thread …
I’m trying to optimize the radii of some of the lenses.
Using Merit Function Editor, I’m using the operands CVGT and CVLT.
However, it seems as if these are not respected at all.
Is there some sort of conversion between numbers I need to make?
br, Oscar
That should work. Just think about the signs. And make sure the weights are high enough. What I usually do is:
CVVA
RECI of the CVVA to get radius
ABSO of the RECI
ABSO > minimum radius
Hi Oscar,
I would furthermore recommend the both operands ...
MNCA = Minimum Center Thickness of Air
MNEA = Minimum Edge Thickness of Air
… in combination with the CVVA = Curvature Value settings using Merit Function Editor (MFE).
This will avoid single elements from overlapping when applying a suitable weight for each operand.
Kind regards,
Christian
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