Okay, now I see what you're saying. That's a very silly mistake indeed. :oops:
When I fix the order of the equations for power, everything is correct, without messing around with any extra signs.
Attaching final and corrected ray traces here for future readers. Many thanks for your assistance!
I agree that phi must get another negative, but I'm wondering how to justify the change.
The sign convention for ray tracing left-to-right says that curvatures with the center of radius to the right are positive. Curvatures with the center to the left are negative. If we flip the direction of...
Many thanks for your reply. I apologize for the indices at 1.51. That was a carry over from an earlier version that I failed to revise.
You're onto something when you say the signs should be flipped. I suspect now that the curvature values must be negative when moving from right to left, which...
Per the description given in the book, one can trace rays FROM the physical aperture stop into object space to find the size and location of the entrance pupil (EP). Also, one can trace rays FROM the physical aperture stop into image space to find the size and location of the exit pupil (XP). In...
Since my last post, I think I better understand why one would want to conduct a PRT using system marginal and chief rays through pupils.
Many aberration values can be computed using ray heights and angles resulting from a PRT of marginal and chief rays. Tracing rays in this way will also reveal...
I see. In that case, perhaps the use of paraxial ray tracing to locate the EP or XP is probably just an exercise.
Thanks for your time, much appreciated!
In recent coursework, I was taught that one locates the image and identifies the image height using the marginal and chief rays. These descriptions are:
Marginal ray: that ray traced from [top or bottom] of the object, through the outermost edge of the stop. The place where that ray crosses the...
Many thanks for the insightful replies. We are actually already conducting IV curve testing and simultaneously measuring flux.
We were concerned about the resistance of the diode when unpowered for tangential reasons. I think it's safe to say, though, that manufacturers don't characterize...
Using the diode check function, I see about 2.1V across 14 of these diodes wired in parallel. This is consistent with my expectations, but I'm not sure it tells me much about the resistance when no power is applied to the diode. I thought that measuring the diode resistance with no power across...
By operating point, are you referring to the range of voltages sufficient to forward bias the diode? Why then do I see large resistance for some and small for others? I'm simply measuring with an ohmmeter from anode to cathode with no power source connected.
I'm working with some bare chip diodes for an application where I need extreme luminosity. These are the diodes here:
https://www.irtronix.com/leuv-v625a6
I notice that some of the diodes have very significant resistance (on the order of megaohms) from anode to cathode and some have very small...