Explanation/Reference:
Reference: http://www.cisco.com/en/US/solutions/collateral/ns669/c07-643449-00_tp_dg.pdf Explanation: In summary, Immersive Cisco TelePresence rooms should be designed with lighting that is:
● Kelvin color temperature of 4000 or 4100K to match the built-in Cisco TelePresence endpoint lighting, and to reproduce colors accurately on screen.
● CRI of 82 to 100.
● Facial lighting from 200 to 400 lux, with these values measured with the Cisco TelePresence endpoint off.
● Shoulder lighting not to exceed twice the values of the facial lighting, and also measured with the Cisco TelePresence endpoint off.
● Light in all areas of the room within the camera field of view should not fluctuate more than 100 lux within the room. In other words, lighting is evenly dispersed throughout the room. This includes lighting at the room walls, which should be equal to or less than the facial lighting and should differ no more than 100 from rest of the room.
● Implementation of a dimming lighting control system is highly recommended to adjust the intensity of light in the room without needing to precisely calculate the overall lighting levels in advance, and to ensure reproducible results with preset lighting scenes.
● Regardless of fixture choices, indirect fluorescent lighting fixtures provide the best results for ambience and amount of dispersed lighting, and asymmetric fixtures provide the most efficient and predictable option within the range of indirect fixtures available