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Light Bulb Shapes - vary, from pear shapes to funnel shapes to tube shapes. Each light bulb type has a designation. Examples include: PAR for parabolic aluminized reflector light bulb or T for tube. Many household halogen light bulbs are a MR16, the MR is for 'metallic reflective' light bulb.

Bulb shapes are derived from these names. Several of the more general classes of bulb types are outlined below.

• A - Standard household incandescent light bulb shape

• B - Bulged bulb shape

• BT - Bulged or Blown Tubular bulb shape

• BR - Short reflector style light bulb

• C - Candle or Conical bulb shape

• CP - Crystalline Pear bulb shape

• E - Ellipsoidal bulb shape

• ER - Extended reflector light bulb shape

• F - Flame style candelabra bulb shape

• G - Globe bulb or circular bulb

• HK - Hexagonal Candle

• K - Krypton or narrow reflector light bulb shape

• MB - Halogen bulb

• MR - Quartz reflector lamp (low wattage)

• P - Pear bulb shape

• PAR - Parabolic Aluminized Reflector (PAR) lamp

• PS - Elongated standard incandescent bulb

• R - Reflector light bulb style

• S - Strait Sided bulb style

• T - Tube lamp shape