Vehicle headlamp system

Details Vehicle headlamp system Vehicle headlamp system

2005-07-19

2005-07-19

Lieu, Julie Bichngoc (Department: 2636)

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

C340S436000, C340S469000, C340S457200, C362S460000, C362S464000, C362S465000, C362S573000, C250S2140DC

Reexamination Certificate

active

06919820

ABSTRACT:
A vehicle headlamp system with headlamps, each of which contains a lamp unit for emitting beams forward with a predetermined luminous intensity distribution. The system carries out beam emission with a luminous intensity distribution corresponding to the travel conditions of a vehicle. In an implementation, when the speed of one's own vehicle exceeds 25 km/h, a low-beam luminous intensity distribution P(L) is varied according to a vehicle-to-vehicle distance in relation to a preceding vehicle. Remote visibility is increased by positioning a cut-off line slightly upward when the vehicle-to-vehicle distance L is long, whereas when the vehicle-to-vehicle distance L is short the cut-off line is lowered slightly in order not to give a glare to the driver of the preceding vehicle. But when the vehicle speed V is 25 km/h or lower, the low-beam luminous intensity distribution P(L) is fixed at a downward position which prevents glare and prevents an unpleasant feeling that something is wrong from being given to the driver of the preceding vehicle resulting from the change of the low-beam luminous intensity distribution P(L).

REFERENCES:
patent: 3683379 (1972-08-01), Saddler et al.
patent: 5349430 (1994-09-01), Yamamoto et al.
patent: 5430450 (1995-07-01), Holmes
patent: 5645338 (1997-07-01), Kobayashi
patent: 5796094 (1998-08-01), Schofield et al.
patent: 5914651 (1999-06-01), Smalls
patent: 6550944 (2003-04-01), Kusagaya
patent: 196 32 252 (1998-01-01), None
patent: 196 34 754 (1998-03-01), None
patent: 197 56 574 (1998-10-01), None
patent: 298 24 081 (2000-07-01), None
patent: 19953447 (2001-05-01), None
patent: 0 340 735 (1989-11-01), None
patent: 2 762 268 (1998-10-01), None
patent: WO 99/28151 (1999-06-01), None

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