Document Type
Thesis
Date of Award
5-31-1991
Degree Name
Master of Science in Electrical Engineering - (M.S.)
Department
Electrical and Computer Engineering
First Advisor
Walter F. Kosonocky
Second Advisor
Kenneth Sohn
Third Advisor
Edip Niver
Abstract
An optical technique was demonstrated for the detection of pinhole defects in latex condoms. To evaluate the optical inspection concept, a prototype inspection apparatus was constructed. In order to maximize contrast between pinhole transmitted signal and optical signal transmitted through the latex condom material, ultraviolet (u.v.) light of wavelength 253nm has been used. This inspection was performed during rotation of the condom, with the light source inside the condom and the photomultiplier photodetector outside. The form on which the condoms were mounted was made of quartz in order to allow the u.v. light to be transmitted through it.
Background signal due to both latex transmitted and latex scattered light was minimized by the use of a slit aperture in front of the photomultiplier tube detector. The smallest pinhole detected during the work was 4.7μm in diameter. A linear relationship was demonstrated between pinhole signal level and pinhole area.
Recommended Citation
Gelencser, Paul Micha, "Application of non-imaging optical inspection to the detection of pinhole defects in latex condoms" (1991). Theses. 2485.
https://digitalcommons.njit.edu/theses/2485
