OpticsRealm Tutorial - 12 - Stops and pupils

Aperture stop: Constrains the on axis beam. Seen from object space is the entrance pupil. Seen from image space is the exit pupil. Also shows how to telecentrate an existing lens.

[@WayneKnight_Rider]

yes. finally a clear explanation for locating entrance pupil and exit pupil locations via oject/image extended ray. thank you so much. this saved me a lot of headache and wasted time.

[@cooldin888]

Thank you Scott!
I finally know what is entrance pupil and exit pupil.

[@ucsdncmir]

Good illustration on stop and pupil. Really like the combination those locations with double gauss lens.

[@imankj]

Thanks for presentation of this challenging subject.

[@reflectarec]

Thanks for this great resource, for taking you time and share your knowledge.

[@arifmoinuddinsiddiquee197]

Thanks Scott. Looking forward to your tutes on spherical aberrations and apochromats

[@priyagusain1591]

No one can explain better than this one 👀

[@user-zn2ue3qs7i]

Hands off sir, great explanation. Can you please do a video on the design complete from scratch like design of a microscope or telescope?

[@anqiwen6997]

Thanks a lot, this is really a good explanation.

[@yushanzhang778]

Thank you so much, Scott! Can you explain how to set EPD and STO? I am confused about this when I am using Zemax. BTW, your tutorials are awesome!

[@hitheng]

hi, scott:
thanks a lot for these tutorial videos, which very detailed and informative!
A quick question, for a blackbox optical system, you have showed how to identify the size and position of entrance/exit pupil. Is there a way to know where the actual optical stop is or size? seems that we have to know where chief ray crosses optical axis...
looking forward to your insights
thanks
Jia

[@omarpasha2968]

I'm just doing an overview again! Now, I'll go back and concentrate on them all!

[@KillerTacos54]

Thank you so so much

[@harisikmal6083]

lu memang padu

[@anilkumaryadav4357]

Dear Sir many thanks for the upload, i was trying to go through the problem 1 . entrance pupil is at same location as that of aperture stop , but for finding exit pupil it was bit difficult for me as i can't trace back with the chief ray as it becomes parallel after passing through second lens. I need your help since i am not able to get the solution on your site as well, due to inactive solution link.

[@kevinfrederick8999]

Thanks for the info

[@thierrymartin8378]

event with one lens a stop can exist inside.This how Galilleo improved his telescope

[@ilkersar7087]

thx, scott, can u share answer the questions? on your site.

[@aulidemartineztapia5337]

Hello
Do you have any bibliography , please?

[@roachsalad]

Good tutorial. Can you talk about how to match the exit pupil of one optical system to the entrance pupil of another in order to make them work together.

[@opticsrealm]

Good idea! I'll do that in the next video. Next video I was planning on discussing Field stops. which can be a great place to put lenses for pupil matching. Truth be told, the original optics video #12 I had discussed pupil matching by telecentrating, but that is a sub optimal place to pupil match. A better location is at an intermediate image by using a "field lens"

[@kevinfrederick8999]

Scott Do know anyone who will do Zemax designs for $??