Relay Lenses

There's an important trick to designing relay lenses especially when the chief ray angle at the image plane is high. You have to pay attention to how the exit pupil of the primary lens is matched to the entrance pupil of the relay lens. We go into gory detail!
0:00 Introduction
02:10 Cute Corporate Jingle
02:17 What could possibly go wrong?
07:34 Aperture of the Relay Lens
10:09 Pupil Imaging with a Field Lens
11:42 Designing the Relay Lens
14:20 Designing the Field Lens
18:53 Combining the Primary, Field and Relay Lenses
20:49 Summary

[@broadcastblk]

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

[@INCYTER]

You were missed, Mark!

[@seongjunpark7742]

Thank you for wonderful lecture!! Hope you post again

[@user-vx1mx5og4h]

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!

[@roniansiew3319]

Well done!

[@AvijitPrakash]

Very helpful. Thank you! very much

[@dehualiu2966]

Hope you can post more videos like this!

[@alexiseymery3441]

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

[@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 ;)

[@INCYTER]

Such a great video. Thank you!

[@yolklab]

wonderful! thank you very much

[@dehualiu2966]

waiting for your wide angle lenses tutorial

[@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!

[@user-kc5fg3ry6s]

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.

[@user-kc5fg3ry6s]

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

[@marknicholson5508]

@@user-kc5fg3ry6s sure. Just post here.