LED Lamp

 

LED Lamp

LEDs, or Light Emitting Diodes, are advanced semiconductor devices that emit light when an electric current passes through them. Constructed from materials like gallium arsenide or gallium nitride, LEDs are encased in a lens that focuses and disperses light. They produce colors based on the semiconductor materials used, with red LEDs using aluminum gallium arsenide, green LEDs employing indium gallium nitride, and blue LEDs utilizing indium gallium nitride or silicon carbide. White light is typically achieved by combining blue LEDs with phosphor coatings or mixing red, green, and blue LEDs. LEDs are known for their remarkable efficiency, using significantly less power than traditional incandescent and fluorescent bulbs while offering a longer lifespan, often exceeding 25,000 hours. This efficiency translates to substantial cost savings and reduced environmental impact due to lower energy consumption and absence of mercury. In terms of color temperature, LEDs are available in various ranges, from warm white (2700K) that mimics the soft glow of incandescent bulbs, to cool white (5000K-6500K) that resembles daylight. This flexibility allows for tailored lighting solutions across different applications, enhancing both functionality and aesthetic appeal.

LEDs come in various fitting types to accommodate different applications and fixtures. Here are some common LED fitting types:

1. Edison Screw (E26/E27): These are the most common screw-in fittings, used in many household and commercial lighting fixtures. The E26 is standard in the US, while E27 is used in Europe and other regions.

2. Bayonet (B22/B15): These fittings use a push-and-twist mechanism to secure the bulb. B22 is commonly used in the UK and other countries, while B15 is a smaller variant.

3. GU10: This fitting is used for LED spotlights and downlights. It has two pins that push and twist to secure the bulb, making it suitable for directional lighting.

4. MR16: Often used in low-voltage lighting systems, MR16 fittings have two pins and are commonly used in recessed lighting and track lighting. They typically require a transformer to operate.

5. G4/G5.3: These fittings are used in smaller, low-voltage LED bulbs for applications such as cabinet lighting or desk lamps. They feature two pins that insert into the socket.

6. T8/T5: These fittings are used for LED tube lights, often found in commercial and industrial settings. T8 and T5 refer to the diameter of the tube, with T8 being 1 inch and T5 being 5/8 inch.

7. PAR (Parabolic Aluminized Reflector): Used in floodlights and spotlight applications, PAR fittings are designed to provide focused light and are common in stage and studio lighting.

8. LED Retrofit: These are designed to fit existing incandescent or fluorescent fixtures. They are available in various shapes and sizes to match traditional bulb types, such as A19 or BR30.

Each fitting type is designed to ensure compatibility with specific fixtures and applications, allowing for flexibility in upgrading to LED technology.