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.
Light Bulb Shape Types
- A Standard incandescent light bulb shape
- B Candelabra bulb shape
- BR Short reflector style bulb
- C Christmas tree style light bulb shape
- ER Extended reflector light bulb
- F Flame style candelabra bulb shape
- G Globe bulb or circular bulb
- K Narrow reflector light bulb
- MB Halogen bulb
- MR Quartz reflector lamp (low wattage)
- PAR Parabolic Aluminized Reflector (PAR) lamp
- PS Elongated standard incandescent bulb
- R Reflector light bulb style
- S Short bulb style
- T Tube lamp
PAR Light Bulbs: PAR16, PAR20,
PAR30 and
PAR38
 PAR light bulbs utilize a parabolic mirror or reflective surface to
focus the light. This results in a great brightness with less energy
consumption. Still several factors less efficient than an LED light
bulb.
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