EVALUATION OF EYE PROTECTION AFFORDED BY AN ELECTROMECHANICAL SHUTTER
Abstract
The project's objective was to evaluate a high-speed electromechanical shutter that was developed as a protective device against flashblindness. The shutter was tested during five shots by the use of animal and human subjects. The thermal energy incident on the shutters ranged from 0. 0347 to 0.1804 cal/sq cm. Illumination incident on the shutters ranged from 13, 200 to 120,000 lumens/sq ft. The shutter closure time was 550 = 50 micro sec. Recovery after exposure of visual effectiveness of personnel protected by the shutter was instantaneous and complete, whereas unprotected animals received chorioretinal burns. It was concluded that a shutter of the type tested during this operation offered protection from flashblindness. The electromechanical shutter was sufficiently developed to be incorporated into a goggle for service testing. A simple relationship is also given for scaling peak photometric illumination against peak thermal irradiance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 29, 1960
- Accession Number
- AD0615738
Entities
People
- Jerome A. Hirsch
- Mathew R. Wilson
- Robert D. Metcalf
- Wayne E. Gulley