Lux is defined
as the average luminous flux per unit area of the subject, and its unit is lux.
Every place with different usage purpose has its own suitable illumination to meet the
actual needs. For example, the general illumination of an ordinary home study is
about 100 LUX, while reading requires 600 LUX. At this time, a table lamp can be
used as local lighting to achieve the required illuminance. When the illuminance is too
low, it is easy to cause eye fatigue and myopia, and when the illuminance is too high,
it is too bright and dazzling, resulting in waste of electricity.