LED lamps General Explanation of terms

　　For the people are not familiar with the specifications of LED lamps, it's often required a long time to explain to the customer. In response to this phenomenon, put the following five kinds of LED lamps commonly used specifications To explain terminology and sharing, but also for the purchase of friends as a reference:

　　1, LED Size: 0603,0805,1210,5050 refers LED lamps use light-emitting element ---- LED's size (inch / metric), the following is a detailed description of these specifications:

　　0603: conversion to metric is 1005, it means that the length of the LED element is 1.0mm, the width is 0.5mm. Industry referred to 1005, it is called Inch 0603.

　　0805: conversion to metric is 2125, it means that the length of LED components is 2.0mm, the width is 1.25mm. Industry referred to 2125, it is called Inch 0805.

　　1210: conversion to metric is 3528, it means that the length of the LED element is 3.5mm, the width is 2.8mm. Industry referred to 3528, it is called Inch 1210.

　　5050: This is a metric called, it means that the length of LED components is 5.0mm, the width is 5.0mm. Industry referred to 5050.

　　2, LED lights: 15 lights, 30 lights, 60 lights LED lamps per meter is the length of the number of pieces of LED components soldered, general lighting 1210 specification is per meter 60 LED, 5050 size 30 lamps per meter LED, there is a special per meter 60 LED. LED Quantity of LED lamps of different prices are different, which is the price of LED lamps distinction is an important factor.

　　3, the color temperature: refers to a standard blackbody heating, the temperature rises to a certain extent, starting from the dark red color - light red - orange - white - blue, gradually changing the color of a black body light source and the same, then we will blackbody The absolute temperature is called the color temperature of the light source.

　　Color is not a general assessment of an indicator LED lamps, but many foreign customers because the use of the environment, will make a special request.

　　Different color temperature light source, the light color is also different:

　　Color temperature below 3300K, the light red color cast give a warm feeling; has solid atmosphere, warm feeling, known as Warm.

　　Color temperature 3000 - 6000K for the middle tones in this particular under no obvious visual psychological effects, there is a refreshing feeling; so called "neutral" color temperature

　　Color temperature exceeds 6000K, light color blue, gives a cool feeling, known as cold color temperature.

　　4, Brightness: cd (candela)

　　The basic unit of luminous intensity, candela is the basic unit of the International System of Units one.

　　General LED lamps of different colors have different luminous intensity, commonly used unit is mcd. The higher the value, the larger the light-emitting intensity, which is brighter. This is the assessment of an important indicator LED lamp brightness, the brightness of the lamp requires higher the price the more expensive. This is because the high-brightness LED chip prices expensive, and the brightness is higher, the greater the difficulty package.

　　5. Beam Angle:

　　This refers to the LED lights on the LED elements light angle, general use SMD LED, SMD components that are emitting angle of 120 degrees. Emitting angle increases, since astigmatism better, but relative, whose luminous intensity was correspondingly reduced. Viewing angle is small, light intensity is up, but the exposure range will shrink. Therefore, the assessment of LED lighting is another important indicator is the light angle. There are now some unscrupulous manufacturers, in order to improve the brightness of light in order to earn higher profits, deliberately light angle decreases, the slightest mistake, they will buy such shoddy components.

　　6, Voltage: This refers to the input voltage LED lamps, commonly used specification is DC 12V, also some 24V.