Quick and easy calculate a bunch of optical functions
About this app
The Aalener Optik-Formelrechner enables a quick and easy option to calculate a bunch of optical functions.
At the moment the following features are implemented:
- Paraxial raytracing - Exact raytracing for an object on the opitcal axis - Calculation of oblique crossed cylinders with optional sphere - Calculation of refraction index. - Calculation of relative transmission - Calculation of radii for lenses which are free of spherical aberration or coma - Calculation and visualization for error of refraction, astigmatism, distortion, volume, weight and dimensions of spherical toric lenses - Conversion of Back Vertex Distances (eg. glasses to contact lenses)
This application was part of a bachelor thesis for the study program opthalmic optics and audiology at Aalen University. It is meant to check calculations and takes part in the interactive lectures.
Please be advised that the whole application is in german only. If you are an optician it is highly possible that you will understand most of the functions by their formula symbols.
Licensed under GPL-3.0-or-later.
What's New in v1.12
Imported from the F-Droid repository index.
Version history
Aug 9, 2024 · 1.9 MB · Android API 21–35 · code 6
Imported from the F-Droid repository index.
SHA-256 bad6f886478eb8e3c75059b6dc85e8fddcca6ae8d13d767d7954d13d07477039
Sep 11, 2018 · 2 MB · Android API 15–26 · code 4
Imported from the F-Droid repository index.
SHA-256 3d7ea1625aedb445faed5327ccc6c10c7d6d5a17602a1357c1a39c7271775c7f
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
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How to roll back to an earlier version
If the current release misbehaves, 1.10 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Aalener Optik-Formelrechner first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
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Get Aalener Optik-Formelrechner
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Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
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SHA-256 Hash
bad6f886478eb8e3c75059b6dc85e8fddcca6ae8d13d767d7954d13d07477039
Signing certificate
3f4cb6a2ee088e6866b9c88dc7512ae6cff21bbbf07d5d02e1bf9cac2e3ff6b3
Previous Versions
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