Relay Lenses

[@tgepl2069]

I also have to thank you for this. It is a lot of fundamental and subtil concepts which are packed in this 20 min + videos.

[@norcal5040]

I'm sure you're probably getting tired of hearing this, but thank you! I've been through the Fundamental Optical Design book, Coursera's/UC Boulder's online certificate program, pencilofrays, Jena lectures, just about every KZbin video I could watch on this stuff, forums, and your videos have been, by a very large margin, the most helpful. It's insane how advanced optical engineering is, but you manage to cherry pick exactly what is important, and share it in a way anyone can understand. For me, I think we both know, I still don't know lens design, but I feel your videos have put me in a position to at least start on lens design, encounter those road blocks, figure out how to overcome those obstacles, and learn how you're supposed to. This is in stark contrast to what usually feels like being taught an entire language, with all the nuance, and having no idea it's for communicating. Just a breathe of fresh air watching these videos, kudos to you man! Hope you're enjoying your retirement!! You deserve it.

[@marknicholson5508]

Thank you! And no, I don't get tired of it 🙂

[@seongjunpark7742]

Thank you for wonderful lecture!! Hope you post again

[@broadcastblk]

Welcome back after 2 years!🎉 Great video. Thanks for the explanation!

[@INCYTER]

You were missed, Mark!

[@物理学就是上帝]

Listen man. Getting taught by the ex-CEO, completely free, as an undergraduate student in applied physics, is of immeasurable value. A big thank you!

[@marknicholson5508]

My pleasure!

[@dehualiu2966]

Hope you can post more videos like this!

[@roniansiew3319]

Well done!

[@rishabdasgupta3073]

Thanks for the video mark!

[@qingfengli6981]

Thank you very much for such a great video! Waiting for a similar one talking about the condenser lens ;)

[@AvijitPrakash]

Very helpful. Thank you! very much

[@INCYTER]

Such a great video. Thank you!

[@alexiseymery3441]

Thank you very much for your video! It's very helpfull!

[@AnthonyJRobotics]

Great video. Thank you very much! Am I correct to say that if the lens I'm designing only concerns a very narrow field of view, then it is ok to use a simple relay lens e.g. an achromatic pair?

[@marknicholson5508]

It could be. Look at the chief ray angle to see how quickly the rays diverge from the image plane. It's the chief ray rather than the field of view: a telecentric lens may not need a field lens but could still have a wide field of view

[@AnthonyJRobotics]

@@marknicholson5508 Thank you!

[@yolklab]

wonderful! thank you very much

[@dehualiu2966]

waiting for your wide angle lenses tutorial

[@dairaoptical]

sir if the object close to lens or object as a self luminous components like an LED then which type of aperture will use ?

[@marknicholson5508]

You can use all of the available types, but since the object is so close to the pupil you should use cos^3 *apodization* of then pupil to correctly describe the illumination across the pupil.

[@dairaoptical]

@@marknicholson5508 you make me happy by replying thank you so much sir can i ask more question ?

[@marknicholson5508]

@@dairaoptical sure. Just post here.