LED flood lights and LED spot lights are often being confused, LED flood lights are generally no lens, light angle is relatively large, and generally 120 °. Irradiation area of LED flood lights is relatively large, but the irradiation distance is not far. LED spot lights are generally have lens, light irradiation angle can be determined by the angle of the lens size. Irradiation area of LED spotlights is generally not very large, but the irradiation distance is relatively far.
Composition of LED flood lights:
Tempered glass, reflector, LED integrated light source (COB), LED power supply, die-cast aluminum housing.
There is two processes, one is physical tempering and the other is the chemical tempering.
Physical tempering is taking the ordinary flat glass or float glass in the specified conditions and the environment, made after quenching or air-cooled fire processing.
Chemical tempering is by the ion exchange method to change the composition of the glass surface of ordinary flat glass or float glass so that the glass surface to form a layer of pressure stress layer, and processing.
Identification for good or bad: check the flatness, no bubbles, no inclusions, no scratches, no lines and fog spots, and other quality defects, the existence of such defects in the glass will occur deformation, reducing the transparency of glass, mechanical strength and thermal stability of glass in use.
Identification method: no distortion, no spin lines, no pinholes, bright surface, no obvious sand holes on the surface, electroplating gloss should be good, plating thickness should be uniform.
LED integrated light source:
Identify the good or bad: through the microscope to see whether the chip is to require manufacturers, whether the chip size is the size that required. The chip includes sorted chip, chip, chips on tape, wafer, according to specifications of LED floodlights to confirm the good or bad. Glue, support, phosphor etc. composition also can determine the quality of LED products.
LED Flood Lights
LED Power Supply:
Identify the good or bad: First, we need to start from the data. LED power conversion efficiency and power factor determine the good or bad of power, the better power supply, the higher value. Insulation protection of non-isolated power supply is very important.
Die-cast aluminum housing:
Identify the good or bad: the housing determines whether the product heat is good in the future, whether the light failure is within the normal range. At present, many manufacturers never consider the product cooling problem. In order to reduce costs, many manufacturers are very demanding in the aluminum and use some waste. Because customers simply can not distinguish between the good and bad of aluminum. The best way to identify is through stability testing.
Standard method for inspection of LED flood lights.
Brightness check, test the product illumination with the meter far from the product one meter, whether the products illumination is consistent with the data that suppliers provided.
Light failure check, check the illumination value every day regularly with a light meter, whether the illumination is within the normal attenuation range.
Temperature check, check LED integrated light source with a thermometer near the 1 cm, whether the test temperature is in the range of 80 degrees, and then use the thermometer to test the surface temperature of LED floodlights.
Whether there are scratches, deformation in the part of the surface, whether there are fingerprints on the glass. Fingerprints can reflect whether the factory management is strict and product quality requirements are harsh.
The good or bad of a product, lies in your request. Price is only a part of the product, a good product does not measure by the price, but the value.