BS 5550-7.1.1:1980

This standard BS 5550-7.1.1:1980 Cinematography. Production and presentation. Light sources and lighting is classified in these ICS categories:

• 29.140.20 Incandescent lamps

This British Standard covers exciter lamps for 16 mm and 35 mm motion picture projectors, as shown in Table 1.

Dimensions, optical performance of five types of lamp for 16 mm and 35 mm cinematograph projectors and similar applications. Lamps with bayonet and pre-focus caps, bulbs of pear and tubular shape, transverse and axial filaments. Values for initial light output and current consumption, minimum lumen output maintenance, hours life. Sampling batch testing.