Patent ID: 8427311

Claim:
A lighting device comprising: a) at least one light source arranged to generate light; b) an accommodating device having an at least partly translucent external boundary arranged to accommodate the at least one light source; and c) a controller for controlling light output from the accommodating device, where 1. a first part of the external boundary and the at least one light source are adapted to provide, through the first part of the external boundary, a first flux of a first type of light having a color and a first luminous intensity; 2. a second part of the external boundary and the at least one light source are adapted to provide, through the second part of the external boundary, a second flux of a second type of light corresponding to white light and having a second luminous intensity; 3. the controller: (i) when triggered, effects said provision of the first type of light, such that the color initially has a dominant wavelength in the range of 580 to 770 nm and the first luminous intensity progressively increases, and (ii) subsequent to said triggering, progressively increases the second luminous intensity of the second type of light.