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version (8.69 KB) by Jason
Use this small app to model simple lens setups.


Updated 10 Feb 2017

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This is a small GUI for interactively modelling simple lens arrangements. Collimated and diverging rays are propagated through the lens system, where thin lenses are assumed throughout. If an real image is formed, its position and magnification are noted. An arbitrary number of lenses are supported, and may be added or removed interactively.
Click and drag to change lens focal lengths and positions.
Click the upper labels to manually alter distances, click the lower labels to manually alter focal lengths.

Cite As

Jason (2021). LensLab (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (10)

Fengfeng Jiang


Tommaso Seresini

Chris Deep

john linden

Is it possible /Can you add an option to specific the width of the input collumated beam?


Simon Levett

Great. Thank you.


The off-screen issue should be fixed now!

Simon Levett

Hi. Looks like a great app but I can't get it to run on my version of Matlab 2016b. TOnly the bottom half of the lenslab startup window appears at the top of my screen and can't be accessed. Any idea how I can rectify this? Thanks


MATLAB Release Compatibility
Created with R2016b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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