Large Studio Backgrounds Projected from Video Sources

The projection of scenic backgrounds in television studios has not been entirely satisfactory, mainly because of the small (about 6- by 8-ft) size of the picture projected by available equipment. Improved projectors have eliminated certain drawbacks but the light output of equipment used in a conventional manner continues to limit the size of the projected picture. The principle of obtaining more efficient utilization of projected light by placing a projector in an on-axis retroreflective configuration has been known for some time. It has been found that the single-gun, single-lens video projector can be employed in this manner to produce both larger background pictures and provide the versatility of obtaining pictures transmitted via cable from a television camera or video tape playback source.

Print ISSN

0361-4573

Published

1969-10

Content type

Original Research

DOI

10.5594/J10790