We have been able to test the 918 Admon lens and unfortunately the lens is definitely not optimized for the visible light spectrum. The sample images below were made with the 918 on a Sony Sony a7R IV camera at 1.55x where the lens exhibits strong pink and green chromatic aberrations. Out of focus CAs are even more pronounced. What a shame since the lens is sharp at f/2.8 and it was able to cover the entire a7R IV sensor.
Line scan cameras can be designed for use in the visible spectrum from 400 – 700 nm but there are machine vision systems are are optimized for other spectrum ranges like UV, NIR and SWIR. The wavelengths of visible light are relatively short for blue and violet (short wavelengths) and longer for red and orange (long wavelengths). When a lens is used outside its designed wavelength range, the lower the resolution and the higher the chromatic aberrations.
The Admon 918 lens could technically be designed for use at 918 nm which would be a near infrared wavelength. FYI, I have also seen 077, 604, and 732, Admon models for sale in China. There could be other types of Admon lenses out there made for visible light but I cannot find any company information online.
For some good information on line scan lenses and wavelength ranges see this page on the VST lens site: