System for 8 decade sub-bandgap QE Measurement of quantum efficiency in the sub-bandgap region allows insight into the fundamental performance of photodetectors and solar cells. There are…
Ophthalmic Instrument Safety (ANSI Z80.36 and ISO 15004-2) Ophthalmic instruments that shine light into the eye, such as the slit lamps used by opticians and optometrists, are subject to…
What is spatially-averaged radiance? Take the radiance we all know and love... Radiance is defined as the power emitted per unit area of the source into unit solid angle. The product of area and…
UV Index The global solar UV index (UVI) was developed as an easy-to-understand measure of biologically effective UV radiation with a view to promote public awareness of the risks of UV radiation…
Calculation of Spectral Mismatch I-V measurements of PV devices, used to determine amongst other things the device Jsc and Isc, should be performed under AM1.5 illumination. A…
Calculation of Theoretical Jsc The measured spectral response may be used to predict the expected device short circuit current density, Jsc, under standard testing conditions. This is simply…
Spectral Characterisation of Photovoltaic Devices Spectral Response The spectral response (A W-1) of a PV device provides information on the physics at play in the global device, taking into…
Measurement of Luminance of UV Tanning Appliances WARNING: Intense light. Do not stare at the emitter. Annex AA gives brief guidance on this measurement of the appliance, operated at the rated…
Laser Products Designed to Function as Conventional Lamps The following text refers to IEC 60825-1: 2014 "Safety of Laser Products. part 1: Equipment Classification and…
Method for determination of Cyanosis Observation Index of a Light Source The following text refers to AS/NZS 1680.2.5 Interior Lighting Part 2.5: Hospital and Medical Tasks. One should…
