Feinmechanischen Werkstätten Franz Robert Neubert (Franz Robert Neubert Precision Engineering Workshops) was a camera maker in Jena, Germany, just after the Second World War. Neubert began by making the Neuca, a straightforward Leica copy. He improved on this by designing the Neucaflex, which has a prism and mirror used for reflex focusing, but which does not offer a full-frame reflex finder. This camera was only made by Neubert's workshop for a short time before production was transferred to UCA in Flensburg, close to the Danish border. It seems likely that Neubert lacked the facilities to make his camera in the volume he hoped for. UCA was restarted after financial failure as ELOP, perhaps associated with the development required to make this camera, which is much more sophisticated than their own Elca. UCA's camera is an improved model, at first named the Uniflex, but soon renamed as the Ucaflex.
- German Patent 1059282, Einaeugige Spiegelreflexkamera mit Durchsichtssucher (Single-lens reflex camera with optical viewfinder), filed 9 October 1953 and granted to Neubert 11 June 1959, describing the principle of operation of the camera. The description is general, and the mechanism described is common to the Neucaflex and the Ucaflex; however, by the time of the application, the Ucaflex was already produced. At Espacenet, the patent search facility of the European Patent Office.