Light source. The light source shall be an incandescent lamp with a colour temperature in the range of 2800 to 3250 K or a green light-emitting diode (LED) with a spectral peak between 550 and 570 nm. The light source shall be protected against sooting by means that do not influence the optical path length beyond the manufacturer’s specifications.
Appears in 3 contracts
Light source. The light source shall be an incandescent lamp with a colour temperature in the range of 2800 to 3250 K or a green light-light- emitting diode (LED) with a spectral peak between 550 and 570 nm. The light source shall be protected against sooting by means that do not influence the optical path length beyond the manufacturer’s specifications."
Appears in 2 contracts
Samples: digitallibrary.un.org, unece.org
