LEDLight source characteristics and common problems
LED As a new fourth-generation light source, it has many unique technical advantages over traditional light sources, such as high luminous efficacy, long life, good directionality, environmental protection, energy saving, and easy control.
The main problem is the current LED The intensity of blue light in light sources is too high, especially450nm Peak blue light, characterized by high relative intensity, and the harm of this high-intensity blue light to the human retina has become a constraint to LED Lighting is a major issue that is of increasing concern worldwide.
The World Health Organization has issued a clear public notice informing the general public that LED Lighting sources are hazardous to the human retina; the relevant international LED Photobiological safety standards for lighting sources IEC/EN 62471 Has also been published. Big data from authoritative medical institutions show that the incidence of retinopathy has grown exponentially in recent years, mainly due to cell phones,iPADLCD TVs, electronic productsLEDscreen as well as the regularLEDImpact of lamps, etc.
The "Full Spectrum" has been a big hit in the market lately.LEDThe lamp only "hides" the excessive blue light in the red and green light, in fact, the harm of excessive blue light remains.
with respect tolight-emitting diodeDescription of the color rendering index of light sources
- Light source on the object's color rendering ability is called color rendering, can correctly show the original color of the material need to use the color rendering index (Ra) high light source, the sun's color rendering index is defined as 100, color rendering index (Ra) value closer to 100, the better the color rendering.
- Evaluation of light source color rendering using 15 kinds of sample colors, special color rendering R9 is to evaluate the LED on the vivid color red reproduction quality indicators, Ra, R9 is the same as a higher value is the performance of high-quality LED.
- Compared with ordinary LEDs, full-spectrum LEDs have a more continuous spectrum and a wider color gamut; the color rendering index Ra has been greatly improved and is closer to 100.
- Index (Ra) grade color rendering general application:
90-100 1A Excellent Places where accurate color contrast is required
80-89 1B / Places that require color to be judged correctly
60-79 2 General Sites requiring medium color rendering
40-59 3 / Places with low color rendering requirements
20-39 4 Poor Sites without color rendering index requirements - A good LED product manufacturer will weigh the color temperature accuracy, color rendering index, and brightness and other factors to select the right chip.
- Good LED lamps and lanterns, need to have the right color temperature, good anti-glare (weakening blue light) function, general occasions application, color rendering index color rendering 80 or more can be. But for some special applications, such as art classrooms, photo studios, operating rooms, etc., under the premise of meeting other functions, the high color rendering index has special requirements.
Advantages of high color rendering index fluorescent lamps for painting studios with weakened blue light
The company's R & D and production of studio LED fluorescent lamps products, using the industry's top high-brightness lamp beads, lamp bead derating, using long-life high redundancy power supply, combined with highly efficient heat dissipation technology, color rendering index > 97 under the premise of luminous flux up to 118lm / W or more, much higher than the industry's level of 85-90lm / W, to ensure that the continuous service life of 50,000 hours and 10 years of light degradation of less than 5%. The product supports single-ended power supply, the shell is made of modified plastic, giving up the glass shell, lightweight and safe.
The color temperature is above 5300K, the light source is close to the natural light, there is a bright feeling, make people concentrate, suitable for meeting rooms, classrooms, drawing rooms, design rooms, reading rooms in libraries, exhibition windows and other places.
1, high color rendering index: high color reproduction performance.
2. Full Spectrum: The spectrum of light is rich and details are well rendered.
3, weakened blue light: good picture reproduction, to solve the problem of excessive blue light radiation caused by picture distortion.
Test report provided by Sinotest
The blue light hazard of our LED fluorescent lamps is measured at 5.50 when 100 units of the "no hazard" indicator are allowed!
The testing standard refers to the EU standard, but the color temperature is increased from 4000K to 5600K in the EU standard!
Interpretation of selected reports
- It should be noted that: the test report "no harm" column of indicators, belonging to the current LED lighting industry can not achieve a completely ideal state, and had to set up a relatively harmless indicators!
- The corresponding indicators for our LED fluorescent lamps, listed in the red box, show a huge difference from the so-called "no hazard" indicators, reaching the highest photobiological safety level in the industry.
- Under the premise of ensuring that the color rendering index is greater than 96, and 5600k color temperature, in terms of reducing the harm of blue light, the indicators of our products currently reach the world's first level!
- Need to focus on additional information: the test report in the blue light "no harm" column, 100 or less belong to the category of no harm, but this part of the product testing data, the higher, the harm to vision or the existence of cumulative effect.
- Compared to the "speculative" method of reducing blue light radiation in the yellow light band (3500K-4000K), ours is close to the blue light radiation index in the daylight band (5500K-5800K). At present, we can guarantee that no manufacturer can use such a small power consumption, in the 5500K-5800K spectrum conditions, to achieve such a small level of blue light radiation control.
High color rendering index with low blue lightLEDFluorescent lamp parameters–production version
CIE Color Parameters.
Color coordinates : x = 0.3373 y = 0.3472 / u' = 0.2078 v' = 0.4813(duv=1.00e-03)
Correlated color temperature :Tc=5299K Main wavelength :λd=564.8nm Color purity :Purity=5.4%
Peak wavelength :λp=453nm Half width :∆λp=23.5nm Color ratio :R=18.9% G=75.1% B=5.9%
Color rendering index :Ra=96.0
r1 =96 r2 =97 r3 =99 r4 =96 r5 =96 r6 =95 r7 =95
r8 =94 r9 =86 r10=95 r11=99 r12=77 r13=96 r14=99 r15=93
Classification :OUT White Light Classification :ANSI_5000K
Optical parameters.
Luminous flux Φ = 1429 lm Luminous efficiency : 93.33 lm/W Radiant flux Φe = 5.380 W
Electrical Parameters .
Voltage V = 220.0 V Current I = 0.07400 A Power P = 15.31 W Power Factor PF = 0
5300KRelative spectrogram of color temperature
T8Comparison table of various performance indicators of lamps
Standard value for color temperature of sunlight:5500K
Electronic fluorescent tubes and photobiosecurityLEDComparison table of energy consumption of fluorescent tubes
Remarks:
1. The life of electronic fluorescent tube is generally about 1 year, 40W effective luminous flux in 1200LM
2.LED fluorescent tube life in more than 5 years, 13W effective luminous flux in 1768LM
3. Electricity at $0.5/kWh
Requirements for LED fluorescent lamps in art classrooms
High-standard art classroom is a place with precise requirements for light environment, in addition to the high apparent index (Ra>90) requirements for perfect presentation of the true color of things, the standard value of desktop illuminance in the art classroom is 500lx, the company's weakened blue full-spectrum LED fluorescent lamps to fully meet the standards of the art classroom lamps to ensure that under the premise of the lighting requirements of the art room, but also to take care of the eyes of the students, reduce eye fatigue. The core advantage lies in the performance of weakened blue light. The core advantage lies in the weakened blue light performance can ensure the degree of picture reproduction, completely solve the ordinary LED light source due to blue light radiation exceeds the standard caused by the distortion of the picture.
Weak blue light full spectrum high color rendering indexLEDFluorescent Lamps Product Advantages Summary
Bio-safety & energy-saving environmental protection It truly provides a set of LED lighting products and solutions for the art education market that take into account photobiological safety and energy saving and environmental protection.
Solving the blue light problem Full spectrum weakened blue light high color rendering index LED fluorescent lamps, completely solved the problem of excessive blue light radiation of traditional LED lighting products.
Meeting market demand Aiming at the requirement of high color rendering index of light source for the art education market, the weakened blue high color rendering index LED fluorescent lamp reaches a high level in the industry and belongs to the photobiological safety products!
Content Reviewer: Josh Xu
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