The ideal of LED light source to replace the traditional light source, it has a wide range of USES, plays an significant role in automotive LED display
Summarize its ten characteristics: 1, energy saving, LED car (
Car insurance quote)
The lamp is cold light source, overall power consumption is low, the consumption of power is not more than -
W, over 70% of energy than traditional light source.
2, environmental protection, no ultraviolet and infrared spectrum, no heat, no radiation, glare small, and waste recycling, no pollution contains no mercury elements, can safely touch, belongs to typical green lighting led light source.
3, long service life: no loose parts in the body, there is no filament light easy to burn and thermal deposition, droop, such as faults, under the appropriate current and voltage, the service life of up to 60000 hours.
To 100000 hours, long service life 10 times more than traditional light.
4, high brightness, high temperature resistance.
5, small volume.
6 good, stable performance, strong led shock resistance: resin encapsulation, not easy fracture, easy storage and transportation.
7, LED lights.
Shining high purity, bright colors, no chimney filter, optical error within 10 nanometers.
8, reaction speed, no need to heat the startup time, within milliseconds, traditional light bulb glass shell is 0.
3 seconds delay, can prevent the fundation for 9 and the significance of the limit parameter
Allow power led consumption Pm: allow led on both ends are dc voltage and current flow through the maximum value of product.
More than this value, LED fever, damage.
Maximum positive dc current IFm: allows the biggest positive dc current.
More than this value can damage the diodes.
Largest reverse voltage VRm: the biggest reverse voltage is allowed to add.
More than this value, light emitting diode can be broken down.
Work environment topm: light-emitting diodes (leds) working environment temperature range.
Below or above this temperature range, the leds will not work properly, the efficiency is greatly reduced.
The significance of 10, the electric parameters (
Spectral distribution and the peak wavelength: a light of the light emitting diode is not a single wavelength.
Luminous intensity IV: the luminous intensity of leds is usually fingering led line (
) refers to the axis of cylindrical light tubes
The luminous intensity on the direction.
If the radiation intensity in the direction of (
W/sr, the luminous 1 candela (
Symbol for CD)
Due to the general LED luminous intensity is small, so the luminous intensity of commonly used candela (
As a unit.
Spectrum halfwidth & amp;
The spectral purity of lambda: it said luminous tube.
Refers to the figure 3 1/2 wavelength two peak intensity between.
Half value Angle theta 1/2 and perspectives: theta 1/2 refers to half of the axial intensity is a luminous intensity value direction and optical axis to (
The included Angle.
The view of half value Angle of 2 times,
Or a power Angle)
Are two different types of leds luminous intensity angular distribution.
What are the coordinates of the AO relative luminous intensity (
The luminous intensity and the ratio of the maximum luminous intensity)
Obviously, south displayed prominently on normal direction estates ⒐ Cha kang ren?
, out of normal direction Angle, the greater the relative luminous intensity is smaller.
This figure can get half value led Angle or perspective.
Positive working current If: it refers to the normal light-emitting light-emitting diode when the positive current value.
In the practical use should be according to the need to select the IF in 0.
Positive working voltage VF: parameters given in the table is the working voltage of positive electricity flow in a given.
Is usually measured during the IF = 20 ma.
Leds are working voltage VF in 1.
4 ~ 3 v。
At higher temperatures in the world and the VF will decline.
I characteristics: light emitting diode voltage and current, the relationship between the forward voltage is less than a certain value (
When small current, light.
When the voltage exceeds a certain value, after the forward current voltage increase rapidly, glow.
By the V -
I glow curve can draw tube forward voltage, reverse current and reverse voltage and other parameters.
Positive IR< reverse leakage current, the luminous tube;
Under 10 mu A.
Shanxi high-tech Huaye Electronic Group Co., Ltd. is always trying to better understand the led screen
of innovation, so we can help companies lead the industries.
Shanxi high-tech Huaye Electronic Group Co., Ltd. will make a healthy profit for its owners and provide a rewarding work environment for its employees.
Shanxi high-tech Huaye Electronic Group Co., Ltd. clearly knows that people often launch something and love it and want to go on and on about it, but that's too normal and mediocre. There are lots of other competing products, so we need to keep it very, very unique.