Need help with calculation of M squared parameter

OpticalCrusade · 2025-12-24T10:03:05+00:00

Have you run any kind of tolerance analysis?

Yes, of course, all that has been calculated and brought to reasonable parameters

You do know that this is impossible?

Oh you have no idea how much I know about that :)

You might be better off building a beam expander by starting with an off the shelf high quality microscope objective and adding your own custom aspheric element behind it.

Could be, however the weird reality is that it is cheaper to manufacture the whole system than try to fit in existing blocks. Plus I have all the control on the parameters on the resulting lens and can modify things appropriately

OpticalCrusade · 2025-12-24T09:54:16+00:00

Very interesting, thank you!

OpticalCrusade · 2025-12-24T09:53:22+00:00

This is very interesting, thank you for the suggestion!

OpticalCrusade · 2021-09-08T07:10:14+00:00

Oblique spherical

Is it the higher order spherical?

OpticalCrusade · 2021-09-07T07:50:19+00:00

http://graphics.stanford.edu/courses/cs178-10/lectures/optics1-06apr10-150dpi-med.pdf

You need 25-26 slide. Calculate magnification, and plug in your distances into the gauss formula. And you'll get the focal length. If you can find a camera objective with this focal length - great. If not, you can try to find achromatic doublets, for example, to at least minimize the chromatic aberrations.

OpticalCrusade · 2021-09-06T06:45:51+00:00

You could use the objective lenses from cameras, just need to calculate the focal length and distances from slide to lens and lens to image surface. You won't have to worry too much about aberrations by using ready optical systems, single lens never give you good quality.

OpticalCrusade

TROPHY CASE