Engaged in the LED industry for many years these basic knowledge do you understand?（A part）
1. The color temperature and brightness
Color Temperature (Co1or Temperature)
Unit: absolute temperature (Kelvin, K)
Color temperature in absolute temperature (K), is to a standard blackbody (such as platinum) heated, the temperature rises to a certain degree of color began to red, orange, yellow, green, blue, indigo blue purple, violet, gradual change, using the change characteristics of light color, the light source the light of the light color and black color at the same time, we call blackbody temperature at the time of the light source color temperature.Color temperature around 3000 k, smooth color slants yellow.Color temperature above 5000 k, the light blue color.The light of the different color temperature, have different lighting and visual effects.Different color temperature corresponding to different colors of light below.Different wavelengths causes different to the human eye color feeling, from red, orange, yellow, green, blue, indigo, blue and purple), and purple.The sensitivity of the eyes and strong changes along with the change of wavelength.
2. Select the LED light source need to focus on nine basic performance
As the rush market, as consumers, choose, still need to be calm, scientific analysis, choose the best cost-effective light source and lamps and lanterns, here are some basic properties:
1, brightness the brightness of the different, the price is different.Used in lamps and lanterns should comply with the laser level Ⅰ class standard.
Antistatic ability of 2, antistatic ability, long service life, thus higher prices.Antistatic usually greater than 700 v can be used for lighting.
3, wavelength wavelength consistent, the same color, such as request the same color, the price is high.No testing instrument makers are difficult to produce color products.
4, the leakage current is a one-way conductive lights, if there is a reverse current, is called the leakage, leakage current is large, short service life, low price.
5, light Angle USES different its light Angle is different.Special light Angle, the price is higher.Such as the diffuse Angle, the price is higher.
6, different life quality is the key to life, life is decided by droop.Droop small, long service life, long life, high price.
7, the light of the chip to chip, different chip, price difference is very big.Chip is more expensive, Japan, the United States generally chips in Taiwan and domestic price is lower than the day, the United States.
8 chip, chip size to the size of the side length, said big chip quality is better than that of the small chips.The price is proportional with the chip size.
9, colloid ordinary colloid for epoxy resin, with uv resistance and fire retardant more expensive, the price of high quality outdoor lighting should be uv and fire prevention.Each product can have different design, different design suitable for different purposes, the reliability of the lighting design aspects include: electrical safety, fire safety, environmental safety, mechanical safety, health and safety, security, time and other factors.From the perspective of the electrical safety shall comply with relevant international and national standards.
Because it is the new product, the Chinese national standard lag, but countries to provide product qualification testing.With international safety certification (such as GS, CE, UL, etc.) and the national product quality certification is acted the role of higher prices, because these products on the safety design is reliable.The attention of consumers is to carefully identify certificate of authenticity, now has the international safety certification and the national product certification factory is not much.
From the aspects of health, the use of non-toxic materials, design of the product price is higher, especially in indoor lighting, don't keen on gaining petty advantages to choose is faulty lamp act the role ofing, currently only a small number of manufacturers are using non-toxic materials production, to identify the method can directly use the nose, smelly products price more lower than without bad smell.Similar toxins such as lead, mercury, cadmium needs professional analysis.Look from the applicable environmental security, have reliable dustproof moistureproof design, materials, fire prevention, prevent ultraviolet ray, prevent cold cracking of high price of the product.