Electric lamp

An Electric lamp comprising:

• a socket for mounting the lamp along an insertion direction in a lamp holder,
• a lamp bulb having a first bulb half and a second bulb half mounted on the socket, each of the first and second bulb half including at least one semiconductor light source,
• a first and a second cooling fin in facing relationship for cooling the lamp during operation, the first and second facing cooling fins separated by at least one open spacing dividing the lamp bulb into the first and second bulb half forming two discernable bulb parts,
• said first and said second bulb half each being substantially hemispherical and separated by the open spacing dividing the bulb into the first and second bulb halves;
• a lamp axis extending along the insertion direction through a central end of the socket, through said open spacing, and through an imaginary central extreme of the bulb most remote from the socket,
• said first bulb half having a first PCB with the first light source, the first PCB mounted on the first cooling fin, the second bulb half having a second PCB with the light source, the second PCB mounted on the second cooling fin, each of the first and the second PCB separated by the open spacing, and
• each of the first and second bulb halves having a light redistributing, light transmittable wall for redistributing light originating from the light source in each respective bulb half so as to obtain a predefined light distribution during operation of the lamp.