RESEARCH ON OPTICAL AMPLIFICATION EMPLOYING ELECTRONIC SCANNING TECHNIQUES
Abstract
Through research, a basis was determined for subsequent development of a highly sensitive optical to electrical transducer or television camera tube for obtaining useful images at extremely low levels of illumination. An analysis of television camera tube limitations concludes that an advanced scanned optical amplifier of the image orthicon type, embodying suitable means of image intensification, is an effective approach to an ideal imaging tube performance limited only by statistical fluctuations of the input signal. Various means of intensifying the picture signal electronically, before the scanning process, are described. Image amplification approaches investigated include the use of front surface secondary electron from solid members, in order to retain the feature of low voltage operation. The feasibility of applying the principle of transmission secondary electron emission by the use of thin film dynode structures on prescanning beam electron multipliers has been successfully demonstrated. Also investigated was the feasibility of reduing the energy distribution in the electron s anning beam to minimize noise sources in the tube.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1961
- Accession Number
- AD0275319
Entities
People
- Harry Shabanowitz
- James A. Hall
Organizations
- Westinghouse Electric Corporation