A new calibration technique for improving the accuracy of chromaticity and luminance values obtained from a tristimulus colorimeter has been developed. Matrix manipulations similar to ASTM standard practice E 1455 are applied with a goal of minimizing the errors in x, y, and Y measurement, rather than those of the tristimulus values X, Y, Z.
UDT Instruments.com is Now Integrated with Gamma Scientific.com
This post provides an overview of key concepts in display and monitor calibration, with emphasis on general concepts and concise descriptions. Topics include photometric measurements (luminance, contrast ratio, gamma), color measurements (chromaticity, color temperature, gamut mapping, dominant wavelength and purity, white balance/gray balance) and multidimensional characteristics (uniformity, reflection, BRDF, MTF).
Radiometry is the measurement of radiation in the electromagnetic spectrum. This includes ultraviolet (UV), visible and infrared (IR) light
Specifying a photometric system is best approached in three steps. First, evaluate the source to determine which measurement technique best applies.
Scientists made a recent breakthrough that uses nanotechnology to apply LED lighting to paper.
Photometry is the science concerned with measuring human visual response to light. Because the eye is a highly complex organ, this is by no means a simple task. It involves the meeting of many disciplines: psychology, physiology, and physics among them.
Excellent blog post discussing the basic principles of refraction in optics. According to Lux Research, technology innovation in areas such as drivers, optics and thermal management will cause the price of LED packages to fall by more than 70% in the next decade.
Gamma Scientific Acknowledged as EPA-Recognized Laboratory for Third-Party ENERGY STAR™ Lighting Certification
Gamma Scientific, manufacturers of precision testing equipment for light measurement, has been acknowledged as an EPA-recognized laboratory to perform third-party ENERGY STAR™ certification testing for lighting products.
Display calibration is the process of using the display’s controls to calibrate the on screen image so that it matches the original source content, as its creator designed it. This allows the calibrated display to accurately reproduce the video signals from any source device, be it a digital signage player, cable box, satellite box or Blu-Ray player.