OPTICAL SYSTEMS, SPECTACLE LENS AND EYEWEAR INCLUDING THE SAME
A system is provided, which is adapted for an eyewear and/or a spectacle lens. The system may be configured to actively control an amount of light at a point at a predetermined distance of the system, for example to switch between a first light intensity and a second light intensity. A spectacle lens is provided comprising system. An eyewear is provided comprising system. The system may be an illumination system which may comprise a light source configured to emit a first light and a second light, and further configured to emit pulses of light with a pre- determined time function. The pre-determined time function may include a plurality of packets. Each packet may comprise a pulse alternation between first light and second light. The system may be an optical filter system, which may include a band-cut filter. The band-cut filter may be configured to be in a band-cut filter state under a low light condition and not in the band- cut filter state under a high light condition.