21
Dymax BlueWave® LED VisiCure® User Guide
Definition of Terms
Light Emitting Diode (LED)
– A solid-state, semi-conducting device that generates a specific, narrow-
band wavelength of energy.
Intensity, also known as Irradiance
– A measure of energy over the unit of surface area (measured in
W/cm
2
or mW/cm
2
).
Brightness, also known as Luminance
– A description of energy in the visible region of the spectrum
(approximately 400-700 nm). Brightness is recorded in photometric units. The “Intensity” (see below) of
visible light energy is called Illuminance.
Illuminance
– Luminous flux (energy of visible light) incident per unit area. Illuminance is measured in Lx (lux)
or Lumen/cm
2
.
Ultraviolet (UV)
– The invisible region of the spectrum just beyond the violet end of the visible region.
Wavelength ranges in general from 1-400 nm. Dymax bulbs (burners) do not radiate energy in deep
Ultraviolet; there are very minute amounts below 220 nm and practically nothing can be sensed below
200 nm. This is due to the use of an ozone-blocking quartz bulb envelope (See Ozone).
1.
Ultraviolet A (UV-A) – UV of long wavelength from within approximately 400 to 320 nm of the spectral
band.
2.
Ultraviolet B (UV-B) – UV of medium wavelength from within approximately 320-280 nm.
3.
Ultraviolet C (UV-C) – UV of short wavelength below 280 nm (typically 280-200 nm) – a large amount
of this energy is present in sunlight.
4.
Visible – Light that can be seen at 400-700 nm.
Dose
–
Irradiance integrated over time, or Irradiance (W/cm
2
) x Time (s) = Dose (Joules/cm
2
). Note: Watt
is the power that gives rise to the production of energy at the rate of 1-joule (J) per second (s).
Ozone
– An oxidizing agent (O
3
) produced by the action of Ultraviolet radiant energy (below 185 nm) or
electrical corona discharge of oxygen on air.
OSHA 1910.145:
“Regulation of Accident prevention Signs and Tags” defines the following headers as:
■
WARNING – Used when there is a hazardous situation that has some probability of severe injury.
■
CAUTION – Used to indicate a hazardous situation that may result in minor or moderate injury.
■
NOTICE – Used to convey a message related directly or indirectly to the safety of personnel or
protection of property.
