Abstract: The new Intense Point Source (IPS) consists of the regular linear Xenon flash tube mounted in a newly patented Orthogonal Parabolic Reflector (OPR) (Patent No. 5,037,191). The system integrates the radiation for the long linear lamp into a very small point on the order of 3 to 6 millimeters in diameter, with a 90$DGR divergent angle. A diffuser and lens systems are employed to provide either a narrow beam of a few degrees for long range photography or a diffused light for close-up photography to provide softened, penetrating lighting. Light intensity distribution data for the new flash system as compared to that of the original Vivitar 285 flash lamp as measured in the Vivitar lab, are presented. !0
展开▼
