Illumination – Supported by vehicle structure – Projection-type headlamp
Reexamination Certificate
2006-10-31
2006-10-31
O'Shea, Sandra (Department: 2875)
Illumination
Supported by vehicle structure
Projection-type headlamp
C362S538000, C362S507000, C362S509000, C362S514000
Reexamination Certificate
active
07128455
ABSTRACT:
A vehicular headlamp having a light source bulb inserted into a reflector from a side of an optical axis Ax at a position below the optical axis enables an area to the side of the optical axis of the reflective surface of the reflector to be utilized effectively for light distribution control. The shape of the reflective surface of the reflector in a vertical cross section that includes the optical axis Ax is defined by a curve, which is formed such that a normal line of each point of the reflective surface is positioned between a bisector of a line segment that joins each point with a light source and a line segment that joins each point with an upper end edge of a shade, and a bisector of the line segment and a line segment that joins each point with an upper end edge of a rear surface opening of a projection lens.
REFERENCES:
patent: 4677532 (1987-06-01), Peitz et al.
patent: 2001/0021112 (2001-09-01), Taniuchi et al.
patent: 2001/0040810 (2001-11-01), Kusagaya
patent: 2-47704 (1990-04-01), None
patent: 2001-229751 (2001-08-01), None
Koito Manufacturing Co. Ltd.
O'Shea Sandra
Tsidulko Mark
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