Auroras are one of our planet’s most rare and breath-taking natural phenomena as fluorescent light illuminates the darkness with mysterious green veils. A. Lange & Söhne decided to find the perfect setting to showcase and highlight the contrast between darkness and light in their three new luminous models. In order to do so, they recently embarked on a journey to Iceland for a first-hand experience with one of Mother Nature’s most jaw dropping extravaganzas.
The trio of light virtuosos include the GRAND LANGE 1 MOON PHASE “Lumen”, the ZEITWERK “Luminous” and the GRAND LANGE 1 “Lumen”. These watches have luminous displays that need a light source which charges the luminous compound applied to the display elements and allows them to glowThe displays of the GRAND LANGE 1 MOON PHASE “Lumen” and of the other A. Lange & Söhne “Lumen” models can be permanently charged with light energy.
The dials of these timepieces are made of blackened silver and a semi-transparent black-tinted sapphire-crystal glass wafer. . Its light-permeable coating allows the numerals to absorb a sufficient amount of light energy to uniformly glow in the dark for several hours.
The tens cross is coated with a white luminous compound and printed with black numerals. The units disc, featuring black numerals, is made of transparent glass and rotates in front of the luminous background of the date aperture.
The lunar disc that is made of glass is coated with a patented process. Then, 1164 stars and the moon are cut out with a laser beam. The luminous compound makes the moon and the stars shine. Once properly set, it only needs to be corrected one day every 122.6 years.