Barbier, Benard, et Turenne (BBT) was a French company founded in 1862, specializing in the manufacture of spotlights, Fresnel lenses for lighthouses...

had been in use in Alaska since its construction in 1886 by Barbier, Benard, et Turenne, the oldest lens making company in the world. The lens is made...

I, manufacturing and delivering the lighthouse's light from Barbier, Benard, et Turenne in France to Aruba posed challenges. The light was particularly...

lit on 15 January 1908. The revolving optic, manufactured by Barbier, Bénard, et Turenne, displayed a flash three times every ten seconds; it remains...

spiral staircase climbs up to the lantern room, containing the Barbier, Benard, et Turenne 2nd order Fresnel lens that floats in a bath of mercury. It is...

Air Bashkortostan (ICAO code BBT), an airline based in Russia Barbier, Benard, et Turenne, a French company that specialized in the manufacture of lighthouse...

in white and black rhomboid shape. The light is equipped with Barbier, Benard, et Turenne third order Fresnel lens and emits four white flashes every 25...

Canaveral Light Station are all on display at the museum. The 1904 Barbier, Benard, et Turenne rotating third order Fresnel lens has been restored to service...

equipment was changed with the 1st order of Fresnel lens built by Barbier, Benard, et Turenne. The current lighthouse, built in 1926, is settled on a lower...

second-order with a focal length of 700mm, but from the same company of Barbier, Benard, et Turenne. Mounted within a 2m diameter green lantern room made by Sautter-Harle...

installed, with a 300 mm focal distance, by the French company Barbier, Benard, et Turenne. A medium frequency (MF) transmitter was installed in 1948. The...

equipped with a white fixed light catoptrics equipment built by Barbier, Benard, et Turenne with a range of 19 nautical miles (35 km; 22 mi). A new torch...

lantern was equipped with the 4 th order of Fresnel lens built by Barbier, Benard, et Turenne emitting a white and red light with a range of 18 nautical miles...

were used. The new device, supplied by the French company of Barbier, Benard, et Turenne, began to function definitively on November 6, 1897, making one...

original 1st order Fresnel lens from 1890, which was supplied by Barbier, Benard, et Turenne of Paris. With a focal height or elevation of 32 metres (105 ft)...

a third-order double bullseye lens manufactured in France by Barbier, Benard, et Turenne. This first Low Point Lighthouse was replaced in 1932 with an...

every 10 seconds. It was manufactured by the French company, Barbier, Benard, et Turenne, and was transferred from the Lighthouse of Cabo de São Vicente...

lens, group flashing white (5 sec.), manufactured in France by Barbier, Bénard et Turenne was installed. This replaced the 1857 fixed white, fountain lamp...

the first time. It was made in Paris by the French company, Barbier, Benard, et Turenne in 1896 and was used by the lighthouse until 1960. It was donated...

range of 21 nautical miles. The optics consist of a third order Barbier, Benard, et Turenne Fresnel lens and drive system, with a 400 watt lamp. As well...

electrified. The rotating optic which was built in Paris by Barbier, Benard, et Turenne in 1951, is equipped with a Fresnel lens, with four deflectors...