Patent ID: 9515056
Filing Date: 2016-12-06
CPC Classification: F21S,F21Y,H01L

Claim Text:
1. A lighting device comprising a plurality of electrically activated solid state light emitters including: at least one first electrically activated solid state light emitter comprising a dominant wavelength in a range of from 485 nm to 505 nm; at least one second electrically activated solid state light emitter comprising a dominant wavelength in a range of from 526 nm to 545 nm; and at least one third electrically activated solid state light emitter comprising a dominant wavelength in a range of from 615 nm to 625 nm; wherein the at least one second electrically activated solid state light emitter comprises a narrow spectral output with a full width—half maximum emission value of no greater than 30 nm; and wherein the lighting device comprises one or more of the following features (i) to (vi): (i) the plurality of electrically activated solid state light emitters is arranged to generate aggregate emissions having a correlated color temperature, and having a scotopic/photopic ratio in at least one of the following ranges (a) to (d): (ii) the lighting device is devoid of any electrically activated solid state light emitter comprising a dominant wavelength in a range of from 546 nm to 614 nm; (iii) the lighting device is devoid of any electrically activated solid state light emitter comprising a dominant wavelength in a range of greater than 625 nm; (iv) aggregate emissions of the lighting device comprise a gamut area index (GAI) value in a range of from 80 to 100; (v) the at least one first electrically activated solid state light emitter comprises multiple first electrically activated solid state light emitters; (vi) aggregate emissions of the lighting device comprise a color rendering index (CRI Ra) value in a range not exceeding 50.