Lamp for a motor vehicle headlight

A lamp ( 10, 11 ) for a motor vehicle headlight is described. The lamp ( 10, 11 ) comprises a quartz bulb ( 3, 12, 17 ) narrowly enclosing a light source ( 1, 2 ) and possibly an outer bulb ( 4 ) surrounding said quartz bulb ( 3 ). Negative lenses ( 7, 8, 14, 15, 16 ) extending in the direction of a longitudinal axis ( 1 .) of the lamp ( 10, 11 ) are present in or at the two lateral surfaces ( 6, 13 ) of the quartz bulb ( 12, 17 ) and/or of the outer bulb ( 4 ). These lenses ( 7, 8, 14, 15, 16 ) are designed such that the light source ( 1, 2 ) is optically reduced in size in at least one direction.