Patent ID: 7431467
Filing Date: 2008-10-07
Classification: F21L,F21V,G01J,G01N,G02B

Abstract:
1. A portable lighting device for mobile use at a crime scene, including: a light source; a light guide for guiding light from the light source to a light output end of the light guide; a first terminal for connecting the light source to a power supply system; and a second terminal for connecting the light source to a battery, wherein the lighting device may be operated selectively with power from the power supply system or from the battery, wherein the light source is a mercury ultra high pressure lamp; an accumulator which is connectable to the second terminal of the device and supplying it with battery power; and wherein the accumulator is one of a lithium ion accumulator, a lithium polymer accumulator, a nickel-cadmium accumulator and a metal hydride accumulator.