Dimensions

Weight 0.87 kg
Sphere diameter 20 cm
Total cable length max 200 cm

Materials

Finish Glass
Material Blown crystal

Specification

Bulbs included Yes
Dimmable Yes / Triac dimmer /
Ip rating IP20
Light source 225 mm long flexible micro-led filament, 210 - 450 lumen CRI95
Note The light source is guaranteed for 15.000 hours, with a flow loss of less than 20% in the course of time.
Suitable for contract use Yes
Suitable for outdoor use No
Year of design 1957

Resources

Technical sheet (.pdf)
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This lamp is a synthesis of redesign and ready-made: a large industrial bulb without its screw cap and with a shortened neck to take the shape of a bubble.

Bulbo was designed by Achille and Pier Giacomo Castiglioni for an installation at the XI Triennale in Milan in 1957. When one lamp was connected to others in a series for this exhibition, the light output drastically reduced and the internal filament turned a reddish hue, giving off a low-intensity, warm ambient light. The 2019 edition by Flos reproduces its filament in tungsten with an LED source, preserving the same colour and intensity of the light as in the original.


Achille and Pier Giacomo Castiglioni

Achille Castiglioni

Born in Milan in 1918. As early as 1940 he dedicated himself to testing industrial production with brothers Livio (1911-1979) and Pier Giacomo (1913-1968). After graduating in architecture in 1944, he began research into shapes, techniques and new materials, aimed at developing an integral design process.

He was one of the founders of ADI in 1956. In 1969, he was authorized by the Ministry of Education to teach “Artistic Design for Industry” and was a professor at Turin´s Faculty of Architecture until 1980 and then professor of “Industrial Design ” in Milan until 1993.

Since 1950 he has worked in the area of testing and research into outfittings and presentations for exhibitions (Triennale di Milano, Montecatini, Agip, Rai). MoMA in New York features 14 of his works. Other works can be found at:Victoria and Albert Museum (London), Kunstgewerbe Museum (Zurich), Staatliches Museum fur Angewandte Kunst (Munich), Museo del Design (Prato), Uneleckoprumyslove Prague Museum, Israel Museum (Jerusalem), The Denver Art Museum, Vitra Design Museum (Weil am Rhein), Angewandte Kunst Museum (Hamburg and Cologne).

He staged a one-man show between 1984 and 1986 organized by the Museum fur Angewandte Kunst (Vienna), then at Akademie der Kunst (Berlin), Triennale di Milano (Milan), Kunstgewerbe Museum (Zurich), Haags Gemeentemuseum (the Hague), Circulo de Bellas Artes (Madrid) and at the Centre Georges Pompidou (Paris). He has been awarded 9 Compasso d´Oro awards.

Achille Castiglioni died in 2002.

Pier Giacomo Castiglioni

Born in Milan in 1913. In 1937, he established the “Architecture, Urban Buildings and Research into Industrial Design” practice with his brother Livio. In 1952 Livio left; another brother, Achille joined the practice in 1944. He graduated from the Department of Architecture at Milan Polytechnic in 1937 and co-wrote a libel on the Milan Town Planning Scheme: “Fifty Significant Squares in the Milan of the Future” with the architect Carlo Pagani in 1938.

Lecturer and Assistant in Architectural Composition, Professor in Drawing and Relief Work at the Milan Faculty of Architecture. Member of the Board at the Association of Architects and at the Milan City Council Building Commission. Member of the executive committee for the 13th Triennale in 1964. He exhibited at every Milan Triennale from 1940 on, winning many awards. For the latter, based on the theme “Leisure time, living time”, Pier Giacomo Castiglioni was a member of the Executive Committee.

He was a member of numerous juries: in 1956, 1957 and 1958 for “La Rinascente Compassod’Oro”; La Triennale of Milan; Formica-Domus Competition; Abitare-De Padova Competition; International Cantù Furniture Competition.

He was also particularly active as the curator of exhibition installations for national and international institutes and leading companies attending national and international exhibitions: Montecatini, RAI, ENI, Triennale di Milano, Mostre Esposizioni Torino, “Italia61”, AGIP. Pier Giacomo Castiglioni received numerous prizes and awards, including the “Compasso d’Oro” in 1955, 1960, 1962, 1964, 1967, 1979. He died in 1968.

His works have been displayed and are currently being exhibited at: Museum of Modern Art, New York (22 works at present), Royal Institute of British Architects (London) Musée des Arts Decoratifs (Paris), Palais du Centenaire (Brussels), Modern Art Museum, Sao Paulo (Brazil), Prima Esposicion de disegno industrial di Buenos Aires (Argentina).


For over fifty years we have been crafting objects of light and spreading brightness on generations of dreams