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DETECTORS
Overview:
Many are using array detectors like CCD cameras (CCD = charge-coupled device) to make measurements on displays. A great deal of time can be saved by using such array devices. However, it is important to not expect more of the apparatus than its capabilities permit. Because of having a rather remarkable student (NIST SURF program), we include a LabVIEW (R) implementation of controlling a luminance meter.

Publications:
Measurements of Static Noise in Display Images: (SPIE01-StaticNoiseCCD-Meas.pdf) --This publication (also found on the web page Stray-Light Management ) describes the difficulty of making accurate luminance measurements of small areas on complicated images. Measurements made on a noise pattern using a narrow-frustum SLET (stray-light-elimination tube) is compared to a typical array imaging device using a lens (a scientific-grade CCD camera). The errors can be alarming if we are not careful. This material is not to dicourage the use of such array detectors. Rather, it is intended to make people aware of  their possible limitations and offer diagnostics to determine any possible limitations. Citation: J. W. Roberts and E. F. Kelley, "Measurements of Static Noise in Display Images," Proceedings of the SPIE V4295B-27, Electronic Imaging Symposium, San Jose, CA, January 23, 2001.

Automated Luminance-Meter Control Software for Electronic-Display Measurements: -- An example of controlling a luminance meter for making and logging repeated display luminance measurements. Citation: J. Matthew Treinen, "Automated Luminance-Meter Control Software for Electronic-Display Measurements," NISTIR 6683, 11 pages, 2005. NOTE: Certain commercial equipment, instruments, materials, systems, software, and trade names may be identified throughout this site in order to specify or identify technologies adequately. Such identification is not intended to imply recommendation or endorsement by KELTEK, nor is it intended to imply that the systems or products identified are necessarily the best available for the purpose.

Updated 20111009T0833