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Colorimetry in perspective of the human eye

Colorimetry is the science used to quantify colour in perspective of the human eye The science of measuring colour and the appearance of colour is vital: Perception of colour is a subjective process where the brain responds to stimuli produced when incoming light reacts with the several different types of cone cells of the human […]

The Changing Landscape of Display Tests

The display sector is characterized by rapid periods of growth and innovation when competing technologies occupy large portions of the same market space. Cathode ray tube displays were supplanted by the rise of lightweight liquid crystal display (LCD) matrices, later on with light-emitting diode (LED) backlights, and now LCDs are experiencing significant market competition from […]

What is a Cuvette Holder?

A cuvette holder is a specialized light measurement accessory designed to maintain high accuracy levels during transmission measurements of liquids. Assessing the transmission spectra of a translucent material is an incredibly sensitive process that requires polymer cells or glass substrates to be handled with extreme care, mechanical stability and cleaned thoroughly between uses. Small molecules […]

Measurement Instruments for Luminous Intensity

Light measurements can be divided into a series of measurement principles, each of which is quantified according to different optical parameters. Photometric measurements, for example, are expressed according to the responses of the human eye. This is based on an averaged spectral sensitivity known as the Vλ luminosity function, which categorizes wavelengths of green-yellow light […]

Using Light- and Colorimeters for Spot Measurements

Modern displays are subject to optical variations at different stages in the production process. Colour and luminance quality can fluctuate due to light-emitting diode (LED) batch inconsistencies or quirks, but this does not necessarily constitute component failure. This could merely be a product of the rapid-throughput production cycles and the complex arrangements of LED backlights, […]

Outlining the Applications of a VIS Spectrophotometer

A VIS spectrophotometer is a quantitative tool for analyzing the visible spectral properties of a sample with outstanding degrees of accuracy. It can acquire the intensity of a light source at wavelengths of between 380 – 780 nm, with integrated processors capable of running independent calculations and providing rapid assessments of a lighting product’s spectral […]

EPIC interviews Admesy CEO Steven Goetstouwers.

Unlike most CEOs of European photonics companies, Steven Goetstouwers is neither an engineer nor does he have a technical background. A native of Belgium, he studied at the University of Hasselt in Belgium and took a degree involving a mix of business and technical courses but with the main focus on entrepreneurship. Click here to […]

The Capacities of Compact Spectrometers

The rapid pace of modern technological research, development, and manufacturing has altered the way many crucial processes are carried out. R&D measurements and quality control procedures are increasingly integrated into continuous production facilities to improve manufacturing throughputs and provide accurate product insights directly at the point of production. This requires instruments that are smaller, with […]

The 4 Most Common Spectrometer Applications

Spectroradiometers are used to separate, quantify, and analyze the spectral characteristics of a light source, providing industry-specific insights based on a light’s wavelength intensities or frequency. They use a grating to split light into wavelengths of different bandwidths and funnel that light through the spectrometer using integrated concave mirrors. These high optical throughput components ensure […]

What Causes LED Flicker?

Mains electricity for residential and commercial properties operates on the principle of alternating current (AC); the process by which an electrical current and voltage is periodically reversed in an oscillating motion known as a sine wave. The sine wave constantly moves from negative to positive values in association with the magnetic polarity of the alternator […]