公开(公告)号：WO2021102504A1

公开(公告)日：2021-06-03

申请号：PCT/AU2020/051161

申请日：2020-10-28

Applicant: VERSALUX LIGHTING SYSTEMS PTY LTD

Inventor： BEAGLEY, John ,  WARNER, Greg ,  MACRI, Vince ,  CAIN, Sean ,  PHILLIPS, Andrew John Kelvin

IPC: H05B45/20 ,  H05B47/16 ,  F21K9/60 ,  A61M21/02

Abstract: Some embodiments relate to a lighting device, including a first lighting circuit and a second lighting circuit. The first lighting circuit includes at least one first light emitting device that is configured to emit light in a wavelength range of about 430 nm to about 490 nm, with a melanopic to photopic (M/P) lux ratio of about 0.8 to about 1.0 and a colour rendering index of about 80 to about 99. The second lighting circuit includes at least one second light emitting device that is configured to emit light that has a substantially reduced spectral power distribution across a wavelength range of about 430 nm to about 490 nm, with a melanopic to photopic (M/P) lux ratio of about 0.3 to about 0.4 and a colour rendering index of about 80 to about 99. The lighting device includes a switching unit to selectively switch power to the first lighting circuit and to the second lighting circuit.