Product News

What is the difference between plants led grow lights and common lights?

Author : Rachel

Update time : 2021-07-07 15:33:02

Common types of lamps is incandescent lamps, tungsten halogen lamps, fluorescent lamps, etc., let us have a look on the common lighting lamps.

1. Incandescent lamps
The incandescent lamp is an electric light source that energizes and heats the filament to an incandescent state, and emits visible light by using thermal radiation. The light color and light collection performance of the incandescent lamp is very good, but because of the low light efficiency, it has gradually withdrawn from production and sales. Its advantages are simple structure, low cost, convenient use and good brightness. The disadvantages are low luminous efficiency and short service life.

Incandescent lamps

2. Tungsten halogen lamps
The tungsten halogen lamp is a kind of lamp filled with halogenated element gas inside the lamp. Under certain temperature conditions, the tungsten and halogen-like substances evaporated at a suitable temperature will react correspondingly, and then a kind of Volatile halogen tungsten compounds. At this time, the halogen tungsten compounds are in a gaseous state. When this gaseous state is heated, it will volatilize into tungsten and halogen, so that the lamp can be recycled. Disadvantages are poor shock resistance.

Tungsten halogen lamps

3. Fluorescent lamps
Fluorescent lamps use mercury vapor to generate discharge under the action of an 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 lifetime and brightness of fluorescent lamps are better than incandescent lamps. The disadvantages are long start-up time, stroboscopic flicker will occur, affecting the service life. If the fluorescent lamp is not good quality, the damage to human eyesight will be more serious.

4. LED plant growth light
The LED is a light-emitting diode. Advantages of high efficiency, pure light color, low energy consumption; long durable life, safety and environmental protection, instant start; vibration resistance, cold light source, long-term lamp body surface with low heat and good heat dissipation. Get close to the object without feeling hot. Based on this feature, the LED can be placed horizontally or vertically above the plant.

Photosynthesis
The main reason why plant growth lamps use special lamps is that the light required for plant photosynthesis 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 and water to produce organic matter and release oxygen. This process is called photosynthesis.

Let’s take a look at the effects of different wavelengths on plants:
280-315nm: The impact on the morphology and physiological processes is minimal.
315-400nm: Less chlorophyll absorption, affects the Photoperiod effect, and prevents stem elongation.
400-520nm(Blue): Chlorophyll and carotenoids absorb the most in proportion and have the greatest impact on photosynthesis.
520-610nm(Green): The absorption rate of the pigment is not high.
610-720nm(Red): The absorption rate of chlorophyll is low, which has a significant influence on photosynthesis and photoperiod effect.
720-1000nm: Low absorption rate, stimulating cell extension, affecting flowering and seed germination.
>1000nm：720-1000nm: Converted into heat.

From the above data, the wavelength of light required for plant photosynthesis is about 400-720nm. The 400-520nm(blue) light and 610-720nm (red) contributed the most to photosynthesis. 520-610nm(green) light had low absorption of plant pigment.

It can be seen that the plant lights are basically made into red and blue combination, full blue and full red to provide the light of two wavelengths of red and blue, covering the wavelength range required for photosynthesis. In the visual effect, the red and blue combination of plant lights appear pink.

When LED plant supplement light provides plant lighting, the general power is less than 50w, 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, for different plants, the height from the main leaf surface of the plant should be 0.5-1.5 meters. In summary, LED lights are the most suitable lamps for plant lighting.

The plant light launched by CWCE LIGHTING in 2021 has better heat dissipation, lower temperature and longer life than the common LED plant lights on the market, full spectrum, dimmable, and suitable for all stages of plant growth.

Previous : How to evaluate the advantages and disadvantages of plant growth lights ？

Next : Application and Development Direction of LED Plant Lighting Market

Application scope and characteristics of LED high bay light

Mar .01.2022

The scope of use and characteristics of LED high bay lights: Widely used in hazardous environments such as oil exploration, oil refining, chemical industry, military industry, and land oil platforms, tankers and other places for general lighting and opera

Why are high bay lights widely used in industrial and mining operations?

Mar .01.2022

In recent years, a variety of different types of high bay lamps have been widely used in various places. It has an atmospheric appearance and many excellent application performances. This also promotes why high bay lights are widely used in industrial and

Knowledge of LED high bay light: the advantages of LED high bay light

Mar .01.2022

LEDs are between electrons and holes, and through pressurization, electrons jump from one hole to another. The other hole can withstand less energy, and the more energy comes out in the form of light. That is, an energy transition principle, electrons jum

Which led light specifically designed for pharmaceutical factories and food factories ?

Dec .10.2021

Choose a led highbay lights which designed specifically for pharmaceutical factories and food factories, it can be waterproof, anti-fog and anti-smoke, and it can rinse directly, it is security, reliability, energy-saving and durable.