8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of providing photometric data for illumination system design. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EG184A Photometric principles, vision and colour Evidence shall show an understanding of photometry, vision and colour to an extent indicated by the following aspects T1 Nature of light encompassing: dual nature of light electromagnetic spectrum frequency and wavelength (nm) T2 Photometric principles and definitions encompassing: scope and definitions from AS/NZS 1680.1 and AS ISO 1000 - 1998 luminous flux, definition and unit of measurement luminous intensity, definition and SI unit of measurement radians and steradians illuminance and luminance basic optics, reflection, refraction reflectance and transmittance diffuse surfaces the point source and the inverse square law cosine law relationship between watts and lumens older imperial measurements (These older units may include the footcandle or lumen per square foot, candlepower etc). T3 Physiology of the eye and light detection encompassing: Scotopic, mesopic and photopic vision contrast sensitivity colour vision – rods and cones light levels and recognition of colour adaptation accommodation and visual acuity brightness and lightness image detection glare and comfort cognition and visual perception T4 Colour encompassing: Munsell and CIE Colour System chromaticity coordinates black body radiation and colour temperature uniform chromaticity scale diagrams factors determining colour appearance T5 Photometry encompassing: the integrating sphere distribution photometry selected requirements of AS1680.3 (Measurement, calculation and presentation of photometric data) the goniophotometer measurement of luminous flux measurement of luminance and cut-off angle measurement of illuminance (single luminaire) graphical representation of photometric data test reports and data presentation lux meters and measuring equipment required light levels for various situations as per Australian/New Zealand Standards |