irregular shape center spot of my 9V wolfeye bulb?

picard

Flashlight Enthusiast
Joined
Dec 31, 2004
Messages
1,298
What cause the center spot to deform from perfect circle? I just bought a new wolf eye 9V bulb for my wolf eye 9MCobra from Tactical supply which has a elliptical center spot. Is it due to filament or the reflector irregular shape?
 
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