Ultrasonic Lens Development,
Abstract
The solid ultrasonic lens has received some attention as a high resolution sonar beam former in the past but until recently no detailed investigation has been undertaken. Investigations currently underway have shown that many of the techniques of optical lens design are directly applicable to ultrasonics. These techniques have been applied to design a number of lenses which should prove useful in sonar applications where large numbers of multiple beams in one or two dimensions are required. In this report, the design and performance characteristics of solid lenses are discussed, with experimental data demonstrating the performance of singlets, doublets, and a highly corrected four-element lens shown to be capable of forming 0.2-degree beams over a 20-degree field of view. Data of particular interest to the sonar designer such as insertion losses, sensor size, and image surface shape are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1974
- Accession Number
- ADA005489
Entities
People
- D. L. Folds