SED033/Y/L30-1 is unique in its ability to integrate intense flashes as brief as 5 microseconds without saturating the detector, while autoranging over 7 decades at distances over 7.62 meters (25 feet)! Since the human eye is 5 times more sensitive to a flashing source than to a steady light, we designed our flash measurement system to measure both the flash integral (cd^*s, lm^*s/ft², lux^*s), and the flash effective intensity (effective cd) of xenon flash lamps and most other types of flashing devices.

Fresnel lenses are often used to concentrate a flash in the horizontal plane. It is necessary to measure these lenses from a substantial distance to determine the proper effect of the optical system as it is normally viewed, making the total measurable energy for a short duration flash quite small. The high gain lens assembly increases the signal 30 times, improving the range down to 20 millicandela at a distance of over 25 feet from flash sources with an on-time between 6 microseconds and 10 milliseconds.

Measurement Range: 7e^-6 to 3e⁺³ lux plus the factor for cd or effective cd of a flashing source, at any distance GREATER than 7.62 meters (25 feet). Use this ILT5000 system for distances 7.62 meters (25 feet) or less.

Spectral Range: 400-700 nm
Dimensions: 51 x 42 mm dia.
Ordering part#(s): ILT5000, SED033/Y/L30.
 

FILTERS AND INPUT OPTICS ARE REMOVABLE AND MAY BE ORDERED SEPARATELY FROM DETECTOR ASSEMBLY TO ALLOW FILTER AND INPUT OPTIC SWAPPING.