The present invention relates to sunglasses and goggles, and more particularly relates to a system for adjusting optical characteristics such as the color or the optical transmittance of sunglasses or goggles lens and relates to sunglasses and goggles equipped with the adjusting system. Provided is an optical characteristics adjusting system for sunglasses or goggles lenses, the system comprising: lenses equipped with an LCD panel a lens drive unit equipped with an LCD drive unit for applying a driving voltage to the LCD panel an illuminance detecting sensor for sensing the ambient illuminance and a control unit for controlling the action of the lens drive unit in response to a signal from the illuminance detecting sensor. Also provided are sunglasses and goggles equipped with the optical characteristics adjusting system.