A New Photometer for Measuring Screen Brightness
A new photometer has been designed for the measurement of screen brightness and other photometric parameters relating to projection quality. The photometer is a compact, handheld spot meter with see-through optics and an internal meter visible in the viewfinder. The photometer features a silicon photovoltaic cell and solid-state operational amplifiers for maximum accuracy, stability and repeatability, and a computer-designed glass filter for optimal matching to the spectral response of the human eye. The design, testing and application of the new photometer is described.
- Print ISSN
- 0361-4573
- Published
- 1974-09
- Content type
- Original Research
- DOI
- 10.5594/J06928
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