The Effect of Lamp Filament Position on Projection Screen Brightness Uniformity
Data are given on the effect of filament shift and filament rotation on the screen brightness and brightness uniformity in a high-efficiency 16-mm projection optical system. The data show that the filament location and orientation are critical for maximum brightness and best uniformity. The precision illumination-testing projection equipment used in making these tests is described.
- Print ISSN
- 0097-5834
- Published
- 1944-07
- Content type
- Original Research
- DOI
- 10.5594/J08425
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