17
7 Intensity of the Radiation
BlueCure lamps are flood lamps. Therefore, the highest intensity is achieved a
close as possible to the radiation window of the lamp. A typical distance between
the light source and the substrate to be exposed is approx. 5 mm.
Lamps with a wavelength-peak of 395 nm emit light within the wavelength range of
380 to 420 nm.
With an increasing distance between the light source and the substrate, the
intensity of the radiation as a function decreases. The specified maximum intensity
is measured directly on the glass surface of the light-emitting window.
The output capacity of the water-cooled lamps is directly influenced by the
temperature of the coolant and the water through-flow quantity. The irradiance will
slightly increase with cooler operational temperatures, e.g. when first turning the
lamp on.
Because the coolant extensively cools the cooling element of the lamp in certain
operating conditions (for expelling heat), condensation may form in the lamp behind
the glass of the light-emitting window after the lamp is turned off and the cooler
continues to run.
We recommend monitoring the temperature continually via pin 15 of the DB15 plug
(Output Temperature Monitor). If the measured temperature deviates from the usual
operational conditions by more than 10 to 15 °C, this could be an indication that
significant changes have occurred in the operating environment of the lamp.
Every lamp is additionally equipped with an internal temperature switch in order to
prevent overheating and, thus, damaging the lamp. If the maximum temperature is
exceeded, the lamp will automatically shut off. After re-cooling, it will automatically
turn back on when it has reached a lower temperature level. It is imperative to
comply with the operational temperature and coolant temperature at the inlet
specified (see
4 Technical Specifications
).
Содержание BlueCure FL
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