What is the difference between led plant growth lights and ordinary lights

Why do we need to use LED plant-specific fill light for plant growth instead of other lights? What is the difference between led plant growth light and ordinary LED light? First of all, let's first understand the various types of lights.
Incandescent lamp, the most commonly used lighting in life. The principle of luminescence is based on the phenomenon of thermal radiation luminescence caused by a filament in a vacuum or neutral gas heated to an incandescent state by an electric current. The advantages are simple structure, low cost, convenient use and good brightness. Disadvantages: high heat generation, low luminous efficiency; short service life.
The tungsten halogen lamp is filled with inert gas containing halogen element (iodide) in the incandescent lamp body, and the principle of tungsten halogen cycle is used to improve the luminous intensity and service life. Disadvantages are poor shock resistance.
The principle of fluorescent lamp (fluorescent lamp and energy-saving lamp) is to use mercury vapor to generate electric discharge under the action of applied voltage, which emits a little visible light and a large amount of ultraviolet rays. The ultraviolet rays stimulate the fluorescent powder coated on the inner wall of the tube to make it emit bright light. The service life and brightness are better than incandescent lamps. Disadvantages Long start-up time, stroboscopic will appear; affect the service life.

LED fill light
LED (Light Emitting Diode): Use solid semiconductor chips to produce light-emitting materials. When a forward voltage is applied to both ends, the carrier fluid in the semiconductor recombines, releasing excess energy and causing photons to emit visible light. Advantages: high efficiency, pure light color, low energy consumption; durable and long life; safe and environmentally friendly, instant start-up; anti-vibration, cold light source; long-term lamp body surface heat is low and good heat dissipation. Get close to the object without making it anxious. Based on this feature, the LED can be placed above the plant horizontally or vertically. Disadvantages: Weak brightness and high cost.
The main reason is that the light required for photosynthesis of plants is different from the light we use for daily lighting. Plant growth requires the use of the sun's light energy to assimilate carbon dioxide (CO2) and water (H2O) to produce organic matter and release oxygen. This process is called photosynthesis.
And only LED lights can meet the above conditions, because only LED lights can emit the spectrum needed for plant growth, and plants must have suitable light rays for photosynthesis. The spectrum range has an important impact on plant physiology.
When LED plant light supplements light to plants, the general power is less than 50w LED plant light supplement light. For different plants, the height from the main leaf surface of the plant should be 0.2 ~ 0.8 meters; the power is higher than 50w LED plant light supplement Lamps, for different plants, should be 0.5 to 1.5 meters away from the main leaf surface of the plants when in use; in combination with the above conditions, LED lamps are the most suitable lamps for plants to supplement light.