Light bulbs come in various shapes, each designed for specific purposes and aesthetics. Here are some of the most common light bulb shapes:


  1. A-Shape (A19): This is the classic bulb shape that most people are familiar with. It's rounded at the top and gradually tapers towards the base. It's used in a wide range of applications and fixtures.

  2. Pear Shape (PS): Similar to the A-shape but with a more elongated and slightly narrower body, resembling a pear. It's often used in decorative fixtures.

  3. Globe: As the name suggests, this bulb is spherical in shape. It's commonly used in bathroom vanity lights and pendant fixtures.

  4. Candle: Resembling a candle flame, this bulb is narrow at the top and gradually widens towards the base. It's often used in chandeliers, wall sconces, and decorative fixtures.

  5. Tubular: These bulbs are straight and cylindrical. They are commonly used in appliances like ovens, refrigerators, and sewing machines, as well as in some desk lamps.

  6. Flood or Reflector (BR, R): These bulbs have a reflective coating on the inside that directs light in a specific direction. They are used for floodlights, track lighting, recessed cans, and spotlights.

  7. PAR (Parabolic Aluminized Reflector): Similar to reflector bulbs, PAR bulbs have a reflective coating, and they are known for their focused and controlled beam of light. They are often used in outdoor lighting and stage lighting.

  8. MR16 (Multifaceted Reflector): These small bulbs have a multifaceted reflector, making them ideal for directional lighting, such as track lighting and landscape lighting.

  9. Spiral or Twisted: These energy-efficient compact fluorescent bulbs have a spiral or twisted shape. They are designed to replace traditional incandescent bulbs and are known for their energy savings.

  10. Edison Bulb: These bulbs are designed to replicate the look of the original Edison-style incandescent bulbs with visible filaments. They are often used in vintage or industrial-style fixtures.

  11. Flame: Resembling a flickering flame, these bulbs are often used in decorative fixtures and electric fireplaces.

  12. Decorative Bulbs: These bulbs come in various artistic and unique shapes, often meant for decorative purposes in fixtures where the bulb itself is exposed.

  13. Linear Tubes: These are long, cylindrical tubes used in fluorescent lighting fixtures. They come in different lengths and diameters, such as T5, T8, and T12.

  14. Capsule: These are small, cylindrical bulbs that are used in applications like desk lamps, under-cabinet lighting, and some appliances.

These are just some of the many light bulb shapes available. Keep in mind that bulb technology is continually evolving, with LED and other energy-efficient options becoming more common, which might influence the available shapes.