The amount of light required for any of these industrial applications will depend upon the nature of the work carried out. The luminescence required for manufacturing operations is given in table below.
The size of lamp required can be calculated by considering the area to be lighted, the illuminance required,depreciation factor, and the beam factor of the particular projector to be employed.
The level of illuminance is important to ensure workers can perform their task in comfortable condition and not effected to their eyesight such as become blurred or if more serious can cause a blind. read more