Infrared headlight for vehicle e.g. motor car, has filters that are passed through portion of light from light source, before filters exit headlight

摘要

The headlight (1) has a light source (2) whose intensity is less than the maximum intensity in a wavelength range of less than 800nm and/or whose intensity is less than the maximum intensity in a wavelength range of less than 750nm. The transmission amounts of the filters (6,8) are at a wavelength within a range of less than 800nm and/or transmission amounts of filters are at a wavelength within a range of less than 750nm. The filters are passed through a portion of the light from the light source, before the filters exit the headlight.