The Laboratorio Ottico Fiorentino for various decades has participated directly and indirectly in the  study and production of optical components for the maritime and railway sectors, relating to optical and  semi-optical signalling.
It cannot be denied that glass in general, whether optical, semi-optical, technical or coloured, apart from being very reliable when used for signals and other types of use, is the material that provides the greatest guarantee of stability and duration over time, especially due to its special optical properties, and excellent resistance to attacks from physical and chemical agents.
Our products include:
* ASPHERICAL LENSES for relay screen level crossing signals
* DIFFUSER for level crossing signal type "A"
* DIFFUSER for level crossing signal type "BS"
* DIFFUSER for level crossing signal type "BD"
* DIFFUSER for level crossing signal type "O"
* Elliptical MENISCUS LENS - negative
* MULTIRAY DOUBLE CONCAVE LENS
* MIRROR  for relay screen for level crossing signals
* WINDOWS for yellow oblong level crossing signals
* WINDOWS  for red oblong level crossing signals
* WINDOWS for yellow round level crossing signals
* WINDOWS for red round level crossing signals
* WINDOWS for green round level crossing signals
* LENSES Ø 103 mm. Type E.K. 12
* RED LENSES for road signals HC 91 for level crossings
* FRESNELL LENSES Ø 158 mm flat (internal) FRESNELL LENSES Ø 158 mm concave (external)    * LENSES of colourless crystal Ø 218 mm with channels for signals LENSES with white light                     * LENSES with blue light
* GLASS for white signals
* GLASS for signals coloured with red paste Ø 156 mm.
* GLASS for signals coloured with green paste Ø 156 mm.
* GLASS for signals coloured with blue paste Ø 156 mm.
* LENSES in glass for yellow signal Ø 42 mm.
* SEMICIRCULAR GLASS for Hasler tachometer lids
* LENSES for departure indication signals
* LENSES for call indication signals.