Improved Resolution in Sound Recording and Printing by the use of Ultraviolet Light
The resolution of sound-film records has been increased by the use of ultraviolet light in recording and printing. Because of the absorption characteristics of the emulsion, exposures made by ultraviolet light are restricted to the surface. This reduces spreading of the image. The fogging of the track that usually results from halation and reflection from objects in the path of the light is almost entirely eliminated. Since the light-energy is restricted by means of a filter to a very narrow band, chromatic aberration of the lenses is reduced. — The definition of the very fine recording light-beam is limited by diffraction. This limitation is materially decreased as a result of the decrease in wavelength of the radiant energy.
- Print ISSN
- 0097-5834
- Published
- 1936-08
- Content type
- Original Research
- DOI
- 10.5594/J08632
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