LED lamp brightness and various chip type heat problem
LED color common sense:Different colors of LED is determined by the different wavelengths of the chip, for example, the red chip is 620~630nm wavelength (nm), Green Chip wavelength is 527nm, wavelength of blue light chip is 470nm wavelength yellow light chip is 585nm, is the blue light chip white LED, only in the blue chip plus the amount of phosphor will emit white light.
LED chip size common sense:By shapes, chips are generally divided into wafers and squares. Among them, the wafer is relatively low, the performance is not stable; square tablets are generally measured by size, such as 12 mil (1 mil =0.0254 mm2). In general, the larger the chip size of the same brand, the higher the brightness. Red and yellow light in 9~12mil, white, blue and green are generally in 12~14mil, which is on the market the most commonly used chip, if more chip brightness can improve a lot, but the chip price is greatly improved, which is why large size chip why few people used.
The characteristics of LED light source:1. voltage: LED use low-voltage power supply, the supply voltage is between 1.8-3.6V, according to different products, so it is a more secure than the use of high-voltage power supply, especially for public places.2. performance: incandescent energy consumption is reduced by 80% when.3. stability: theoretically light for 100 thousand hours.4. light: with the progress of science and technology, more and more small light. Now light ordinary LED lights in one thousand hours can really control in less than 5%, even more than one thousand hours later, light is very small.5., environmental protection: no radiation, no pollution, genuine environmental protection material. When exporting, LED products are generally exempt.
What is LED?:LED is English light emitting diode (light emitting diode) abbreviation, its basic structure is an electroluminescentsemiconductor materials, placed on a wire rack, then sealed with epoxy resin around, plus the right power
Classification of LED:According to the size of power points: can be divided into small power, high power (the industry generally more than 0.5W of the lamp called high-power light)According to the Outline: can be divided into straight and patch typeLED can also be subdivided according to the size of straw for F3 (the lamp cap diameter is 3mm), F5 (head diameter 5mm); or according to the shape of the lamp holder is subdivided and boundless, thin edge, thick, round cap; according to transparency can be divided into transparent fog.Piranha LED can also according to the size of the lamp is divided into F3, F5, according to the lamp into the shape of round (that is the most common, flat piranha lights) (the head shape is very special, the light angle close to 180 degrees, generally used in the occasions need astigmatism).
