AS NZS 1680.2.5:2018 Interior and workplace lighting
8.1 OVERVIEW
This Section of AS/NZS 1680.1 applies except as follows.
8.2 APPLICATION OF GLARE CONTROL SYSTEMS
The CIE unified glare rating (UGR) evaluation system and the luminaire selection system described in Section 8 of AS/NZS 1680.1 do not apply to areas where patients normally occupy a recumbent position. The recommendations of Clause 8.3 of this Standard apply in lieu.
NOTE: The experimental basis for the recommendations of the glare evaluation system and the luminaire selection system assumes a normal viewing direction below the horizontal, typical of most workplace environments.
8.3 LUMINANCE OF SURFACES IN VISUAL FIELD OF PATIENTS
8.3.1 General
The maximum luminance at a point on a luminaire or of an illuminated surface (e.g. wall or ceiling) in the field of vision of patients should not exceed 1000 cd/m 2 .
8.3.2 Night lighting luminaires
The luminance of any luminaire intended to be left on during the night hours should not exceed 30 cd/m 2 , as seen by patients from their beds.
8.3.3 High luminance sources
High luminance sources should be avoided over cots to minimise the risk of retinal damage in infants who may fixate on the source. If luminaires are located where this can happen,diffusers or other luminance reduction methods should be employed. Consideration should be given to avoiding the use of non-diffused LED luminaires in these situations. The lighting system over a cot should conform with AS/NZS IEC 62471.
8.4 GLARE CONTROL IN OPERATING THEATRES
No maximum glare index is recommended for operating theatres due to the special nature of the lighting in these areas. However, the type of luminaires used and their arrangement should be such as to minimize discomfort glare to theatre personnel.
10.2 NIGHT LIGHTING
Night lighting should be provided in wards and associated corridors to facilitate the safe movement and general security of staff and patients. The type of luminaires used and their locations should be such as to—
(a) minimize the illuminance at the head of each bed; and
(b) limit the luminance of surfaces within the field of vision of patients and staff (see Clause 8.2.2).
10.3 OPERATING ROOMS
The general lighting within the operating room should be capable of providing the following values of illuminance in a horizontal plane, 1 m above the floor (see also Appendix B):
(a) For normal operating procedures—an average illuminance that is capable of adjustment within the range 200 lx to 800 lx.
(b) For operating procedures that require darkened conditions—an average illuminance of about 15 lx.