CCD video camera imaging photometer
823
TRICOR Systems Inc.
The Model 823 Video Photometer measures the absolute brightness of any size sample or scene and provides quantitative data in fL or cd/m2. The 823 employs a progressive scan non-interlaced IEEE 1394 "Firewire" camera to measure the performance of lamps, LEDs, backlit panels, control switches, etc. It also quantifies paint reflectance, hemi-spherical reflectance, micro pitting, mirror reflective haze, contrast, and other appearance characteristics.
The 823 generates a 1024 x 768 pixel image with a digitized 8 or 10 bit gray scale. It uses TRICOR's Eyeppearance® software, a Windows™ compatible PC-based software system, to provide analysis tools used to establish photometric levels for an image.
A user-friendly Windows™ interface offers many menu options for analyzing the acquired gray scale image; however, the real potential of Eyeppearance® is realized when a calibration transform file is loaded for the image. The calibration transform translates the relative gray levels into absolute radiometric levels. Pixel radiance levels and histogram distributions are given in photopic units.
