Guide to UV Measurement
Reflectors
The reflector is one of the workhorses in the UV system. It is estimated that 60-80% of the energy that reaches the substrate is reflected energy. In order to maximize the amount of UV reaching the cure surface, the reflector has to be properly maintained. The information that you record and track on your system will give you clues as to when the reflector(s) needs to be cleaned.
Different reflector shapes and/or distances to the substrate can be used based on what is specified in the process.
If the position of the reflector changes in relationship to the bulb or substrate, the amount and way that the UV is delivered to the substrate may vary. For an example of this, click here.
Reflectors may also use different materials or coatings to reduce the amount of infrared.