Patent ID: 6729752
Filing Date: 2004-05-04
Classification: F21S,F21V

Abstract:
A headlamp which comprises a light source, and a reflector obtained by combining free-form reflection surfaces in a complex manner, wherein if the light source is turned on, light from the light source is reflected by the reflector to thereby obtain a predetermined luminous intensity distribution pattern and a predetermined lateral diffusion type luminous intensity distribution pattern, and whereinthe reflector comprises a main reflector which has a light axis and obtains the predetermined luminous intensity distribution pattern, and a sub-reflector which obtains the predetermined diffusion type luminous intensity distribution pattern, the light source is arranged on the light axis, the main reflector has a longitudinal structure which has such a width near the light axis as to be able to obtain a highest light intensity and such a height as to be able to obtain the predetermined luminous intensity distribution pattern, if viewed from the front, and the sub-reflector is built on left or right of the main reflector and has a vertical wall structure which obtains the predetermined diffusion type luminous intensity distribution pattern on the left or right of the predetermined luminous intensity distribution pattern.