A Commercial Cold Reflector
Methods of reducing the temperature at the aperture of motion-picture projectors are discussed. The development of the cold reflector is outlined and its performance data on illumination and radiation are compared with those for the silver reflector, with and without a heat-reflecting filter. Field tests show that the cold reflector gives such desirable results as improved screen illumination; minimization of film buckle together with alleviation of out-of-focus problems; and a cooler aperture plate, an advantage in changing the aspect ratio.
- Print ISSN
- 0361-4573
- Published
- 1960-05
- Content type
- Original Research
- DOI
- 10.5594/J13792
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