Clearly the incandescents use more power. OSCILLOSCOPE LEADER 4081=KENWOOD CS-1535 DOES NOT CHECK THE BRIGHTNESS OF THE TRACE, joint brightness and percent of core flux, Dual brightness LED from D-Type Flip Flop, Using an audio signal to control the brightness of an incandecent bulb, High power LED driver with brightness control. Today, many people still use a type of incandescent Christmas light. In this talk we will discuss results pertaining to sub 10 μm LED … I agree completely. The only caveat I issue to all reading this is that when driving one or more LED lamps with a current source or voltage source plus resistor, is that the said source can meet the maximum forward voltage drop of all the devices in the series string. The SMD LED produce very little heat while has relatively high output lumen, because of it is driven by a low voltage and current. An LED with 5000mcd and 60° viewing angle is about 4 times as powerful as one with just a 30° viewing angle. Such a sudden defect cannot occur with LEDs. Nevertheless, there are also signs of ageing here, which are called as follows: 1. LED light get brighter with more voltage – Is it true? Now for the measurement of power. Christmas is coming! Cree's LED solutions are driving improvements worldwide in applications such as backlighting, electronic signs and signals. By. Cree's product families include high-brightness LEDs, lighting-class power LEDs, and power-switching devices. I think it's about studying the minutia that never becomes significant in a real circuit. We have become used to a long lifespan of 50,000 hoursand more with LED luminaires and light sources. Simply take your current incandescent watts and select the corresponding LED bulb equivalent on the lumens brightness scale. I really like the last part there, about over-unity and fantasy. This is because the LED light isn't always on. The other reason why you current limit, is to protect the LED from a supply that has a much higher voltage than the LED's current. Using the power equation above, I can solve for the energy as power multiplied by time. Even in this scenario they are 80% more efficient and save power. You are both correct in that, in practice, you're really just trying to focus on current, and keeping it controlled. But wait! the average price for electricity is 13.3 cents per kilowatt-hour. When you pay for your electricity, you are paying for the energy. Actually the difference between 1A and 20ma is simple design, not Vf. So, that's not too bad for just a tree. If. Email. © 2021 Condé Nast. LED: Brightness Costs Bucks. While the math for the CFL bulbs is simple, the LED bulbs are even more energy-efficient and durable than compact fluorescent light bulbs. If a point radiation … High power LEDs are frequently used to replace incandescent bulbs in torches, or can be set in an array to form a powerful LED lamp. At the end of the life expectancy the filament breaks and the lamp remains dark. You can of course fix this by putting an AC to DC converter in the string of lights—but that will add to both the cost of the lights and the power that they use. Just for fun, here is a nice image that shows why the LED uses less power. We are going to tackle the question which light bulb type reigns supreme? For the price, they ought to. The brightness of LED lamps is not given in watts, but in lumens. The SI unit for irradiance is watts per square meter [W/m2], or milliwatts per square millimeter [mW/mm2]. It is the essential source of information and ideas that make sense of a world in constant transformation. \$\begingroup\$ It has little to do with the relative brightness between LED's, of course current limiting changes the brightness of an LED, you can't put the same resistor on two LEDS and expect the same brightness. That's what's happening when Vf "takes care of itself". You can take an LED, find the current, and calculate it's Vf from that. The LED is different from an incandescent in that it doesn't use a high filament temperature to create light. The power (P) of any electrical device including a LED light is measured in Watts (W), which is equal to the current or electricity drawn (I), measured in ampres, multiplied by the voltage (V). Let's say you have a Christmas tree with 500 lights (or maybe even more if you live in my house). This is true for the most part because more current that goes to an LED will increase brightness. At the top of the LED it gets over 70 lux, where the incandescent peaks at about 15 lux. then you can be sure that they have done this. It's really easy with only 16 levels. You could probably calculate the total light output, but you would have to do some math stuff. It could be done with lot of control circuitry, that might not work, or you can use a simple resistor and a different theory. Once … Maybe it shows what happens when your iris is closing with bright continuous light. WIRED is where tomorrow is realized. Here are the two sets of lights I am going to test with the LED lights on the left. Despite all its advantages, the new technology has become more complex. Usually you want to have a similar brightness as before after replacing the lamps. Aging 2… From what they've posted thus far, I believe all in this thread have a good understanding of load line characteristics & computational methods. A parameter that has no real use, is not stable, is anathema to designing. Paul Bertorelli - Published: April 21, 2015 Updated: October 29, 2019. Everything I've said has been completely valid, and within the laws of physics. For the incandescents, I get a power of 20.0 Watts or 0.2 Watts per light. You could just do a visual comparison, but I like to take it to the next level. The power consumed by this bulb is about 32 watts. We have done a lot of the ground work here, in a post measuring the brightness of each high power LED at different drive currents. Yes, that is super annoying in slow motion—but it almost seems like you can still detect the flickering without the camera. Brightness. The old incandescent and halogen lamps, on the other hand, broke down after just a few thousand hours. Fine, the LED use less power. In fact, the LED light turns on and off. You will need a heat sink with a 1A, as the wattage a 0.7A LED is 3W, while a 1.4A LED is 6W. Temperature differences between HID, halogen & LED bulb. Notice that for this bulb, it's actually brighter on the sides than on the top (0 radians is the top of the bulb). Mental masturbation? But now we have another lighting option, the light emitting diode, or LED. Perhaps you need to understand that you will not go far chasing shadows, and focus on the real. They were essentially smaller versions for the bulbs you would put in your lamp. But be careful, don't confuse power with energy. So, they both have same strengths and weakness. Brightness vs. luminance. HID vs. Well thanks Austin, if that is something you would like to do, who am I to dissuade you? LED Brightness VS Power/Current Home. Far above this value, the LED will fail catastrophically. One well known LED manufacturer has claimed that the brightness degredation is a function of older LEDs, not newer LEDs. Power Electronics LED Brightness VS Power/Current. I think I am just going to stick with the incandescent bulbs for now. Based on the same power consumption, SMD LED produce the highest brightness among other types of LED packages such as COB, MCOB or High Power LEDs. It really is that simple. and kill the LED in the process. For example, a correct replacement for a 60w incandescent bulb would be a 15 watt CFL bulb (60 * 1/4 = 15). However, they differ in the area of price, lamp life, and cost of maintenance. In practice, it is incredibly common for the LED manufacturer to include a series resistor in the package to help do this for you. The purpose of the op is NOT to get a circuit to work. Take note that these are measures for 1-Up stars so if you want more light the 3-Up LEDs are a good option as they are triple the light within the same footprint. With conventional light sources, brightness was usually assumed with power input in watts. microLED arrays are a route to providing emissive displays with high brightness and low power consumption performance. Сharacteristics of 5730 SMD LEDs Repeal the laws of physics? In connection with brightness, the … Once you move away from the top of the LED you get very little light. Who here's trying to do that? Some outdoor floodlights emit in excess of 20,000lm. These two projectors have their similarities as well as differences. (Irradiance is sometimes called intensity, but this usage leads to confusion with another standard, but infrequently used, radiometry unit —Radiant Intensity — which is measured in watts per steradian.) A 1 – 2-watt LED will produce 220 lumens, as much produced by a 25-watt incandescent bulb. It is not realistic to control LED brightness via voltage. Power is a measure of how fast you use the energy. They are actually very close. In fact this is how good circuit designers will power an LED. Now we have compact fluorescent lamps (CFL) and light emitting diodes or LED for short. LED vs Bulb projector. That is the energy you get from using 1,000 Watts for 1 hour (or 3,600 seconds). HID headlamps have the same working principle as incandescent bulbs. Ad Choices, Physics Showdown: LED vs. Incandescent Christmas Lights. No rational person could even dispute what you just said. So, I can't just compare the power for the two strands. Halogen bulb: 56.7 watts. Advantages of High Brightness LED. This is because of the "D" in LED—the diode. For a better experience, please enable JavaScript in your browser before proceeding. LEDs require less wattage than CFL for the same amount of light. Compliance with the light on the power unit with the change of generations of ICE diodes does not change very much. Although this is physically wrong, one had an approximate idea of how bright a 40 watt halogen spotlight or a 60 watt incandescent lamp is. Here is the output from the incandescent bulb. Now, let’s check the LED bulb. The LED is in some ways brighter. Most of them worked in marketing, the rest were customers. But what about the unit of kilowatt-hour? The reality in the design of projects you have to prove the standard method wrong before questioning its validity. I think the point of this thread was summed up pretty succinctly as "mental masturbation" which is to say endlessly debating something that is useless. The WIRED conversation illuminates how technology is changing every aspect of our lives—from culture to business, science to design. A 25 to 28-watt LED bulb … LED replacement for halogen: Brightness and color temperature. Catastrophic failure can be defined as when the LED no longer emits light. Twitter. It can be calculated as: If you use energy in units of Joules and time in seconds, then you get power in units of Watts. Energy isn't free. HID bulb: 41.9 watts. The brightness of a light can be measured with a photocell, but I am going to use this light sensor that can record the intensity as a function of time. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. If we compare the LED SMD 3528 and 5730-1, almost at the same area, the light output of the light emitting element increased by 22 times and 15 times the power consumption. Instead I will get the power per light. Price. However, the incandescent is a string of 100 lights and the LED is just 50. You might claim the LED lights are better, but we can all agree that the incandescents are better than putting candles on your tree. Now, earlier in this conversation, it was said that this was just assumed to be true, but it seems like there's still some confusion about that, so I have explicitly stated it for clarity. It really is that simple. However, the brightness differs significantly from model to model. Better For Thermal Management. If you ever see an LED that is advertised with a voltage like 5V, 12V, etc. Voltage sort of takes care of itself it seems. The LEDs I used for what was retrospectively shown to be an experiment were made in early 2005, so are not exactly old LEDs. Above this value, the lifetime of the LED will be decreased significantly. Dual brightness LED from D-Type Flip Flop: Analog & Mixed-Signal Design: 15: Nov 28, 2019: B: Using an audio signal to control the brightness of an incandecent bulb: Analog & Mixed-Signal Design: 3: May 22, 2019: H: High power LED driver with brightness control: Power … It had these large colored bulbs—they were pretty, but you couldn't touch them. As the current through the LED increases, the brightness also increases. In the US, the average price for electricity is 13.3 cents per kilowatt-hour. Win Family Fights This Holiday—With Behavioral Science, These Cookbooks Add a Dash of Science to Your Holiday Meals. LED light bulbs for general use around the home will typically have a wattage between 5W-15W, and will emit between 300-500 lumens. Theory is important. Let's calculate how much energy your LEDs suck up relative to old-school incandescents. Here is my setup. I've then powered the array, driving led columns in brightness order, and tweaked the values to get an even ramp. Facebook. 4.9 (215) Amount of power consumed by different bulb types. It's a small change, but I'm very excited that the rule can be made more "general", because not all diodes are LEDs, and some require a good range of currents and accuracy. But is it enough to make a difference in your wallet? The LED is only brighter for part of the time. Hardware Design. Everything people have been complaining about is completely unwarranted, as they've automatically assumed things about me to be true that aren't. 2 \$\begingroup\$ @ajs410 - looks more like \$2^n\$ to me: the first 1 bit more or less shifts left 1 position to the left with each step. Let's look at three comparisons between LED and incandescent lights. But are they as bright as the incandescents? Thus, they have to be replaced with a greater number of LEDs to make up. "anathema": a thing that is detested or reviled. Wired may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers. LED Light Power. I have also included a rotation sensor so that I can measure the light intensity at different angles from each light. Typically, the recommended current for an LED is 20 milliamperes (mA) or less. Both LEDs and QLEDs depend on backlight option for producing light. I remember the Christmas tree when I was younger. 4. I've found now that this is a much better approximation than I previously thought, however, because you can just adjust Vf for the current you're aiming for. I have long been an advocate of LED lighting. Because different quality led chip, the same 30W led lamp brightness can reach 3000lm to 6000lm.The same 30W, the 6000lm brightness can be twice bright of the 3000lm.So adnlite advice we talk judge the brightness as the luminance (lm) of the led solar street lighting system,but not led power. I spent so many years listening to idiots trying to repeal the laws of physics. The breakthroughs and innovations that we uncover lead to new ways of thinking, new connections, and new industries. JavaScript is disabled. Instead, there is diode that produces light when electrons make an energy transition inside the device. The last graph you posted shows Luminous Intensity vs current and shows the LED or your vision being overloaded above 2mA. AND, if you wanted to aim for 5mA instead, you'd find the Vf at that point, say it's 1.9V, you can do the math differently (9-1.9)/Ω=5mA, and you'll be able to calculate the resistor more accurately than you would be able to assuming Vf is constant. With many LEDs being introduced onto the market, and available light levels increasing, it is useful to be able to define a high brightness HBLED and a high power LED as these terms refer to slightly different aspects of operation. OK, there are two differences between these lights (other than LED vs. incandescent). In this time scale you can clearly see that the LED lights (the blue curve) turn off and back on. Print. Actually, there is one hot point in there—I'm not exactly sure what it is, but it isn't an LED bulb. In the beginning, all we had was the standard, incandescent light bulb. They are much smaller, but also way more efficient—and they don't get so hot. The LED strand is 2.4 Watts or 0.048 Watts per light. Agreed. The more electrons filling holes, the more photons released, and the higher the brightness output. You keep hearing people tell you it doesn't help, it doesn't. High brightness LED HBLED definition: One HBLED definition is that it is a LED and QLEDs provide much brighter image than OLEDs. If you run these lights for 5 hours at 13.3 cents per kilowatt-hour, the LED lights would cost 1.6 cents and the incandescents would cost 6.6 cents. I don't think I'm approaching that at all, I've kept a realistic mind. This is an infrared image so that you can see which set of lights gets hotter. To save the most energy, choose the bulb with the lowest wattage suitable for its usage. Take out your phone and make a slow motion video of some LED Christmas lights. It doesn't even really help understanding, it is a distraction. A device can be destroyed in seconds if the heat from the high power LED is not removed. Let's take a look at some of the facts and figures behind the most wonderful time of the year. Over the years, advances in technology have brought about innovations in how to light our homes and commercial buildings. Clearly the incandescents use more power. 1. \$\endgroup\$ – Axeman Oct 2 '10 at 10:58. While luminance is a precise technical term that defines a quantity that can be measured, brightness is a non-quantitative reference to physiological sensations and perceptions of light. (If you have epilepsy or are sensitive to visual stimuli, stop scrolling now to avoid a flashing GIF.). But OLEDs have same brightness level, regardless of model. A diode only allows current to move in one direction through the light, but the electrical outlet produces alternating current (AC). Many engineers too. Notice that the lights on the right (the LEDs) are much cooler. To a technician, this is unnatural idea. Are LED lights better than incandescents? So, if you're aiming for 20 mA with a 9V source, and the Vf at that point is 2V, you can do the whole (9-2)/Ω=20mA thing and be good. Other than that we need not get too involved in what is happening with the Vf parameter. You impress me as an intelligent person, but I wonder if that feeling is reciprocated. They can produce high lumens of brightness, and their image quality is impressive. Are Christmas Lights in Series or Parallel? I have never seen an LED so bad. To revist this article, visit My Profile, then View saved stories. The LED strand is 2.4 Watts or 0.048 Watts per light. HIDs turn night into day and although not as bright, LEDs offer better contrast and almost limitless bulb life over incandescents. At this point, It's almost like you're trolling. You must log in or register to reply here. I am going to use some type of power meter—the basic idea is that you plug in some device and it reports the power it consumes. Irradiance is the radiometry term for the power per unit area of electromagnetic radiation incident on a surface. Pay close attention to lumens, since this number indicates the brightness, or light output, of the bulb. Now, what's the word for having fun by persuing the minutia of counter- productive theories? There is another very important difference. In other words, the light efficiency of SMD LED is the highest and the best. Forums. It is not realistic to control LED brightness via voltage. LED projectors are more expensive than Bulb projectors. Yes, these were the old style incandescent lights, and they could get wicked hot. With 1,000 Watts for 3600 seconds, that would be 3.6 million Joules. Lumenari, a small business funded by the National Science Foundation, has created technology that would make LED lights 20 to 40 percent brighter per unit of input power… It will probably look something like this. Use of this site constitutes acceptance of our User Agreement (updated as of 1/1/21) and Privacy Policy and Cookie Statement (updated as of 1/1/21) and Your California Privacy Rights. Here is a simple experiment you can try yourself. Because of power limitations, LED and QLED cannot maintain the same brightness peak … P = V x I. However, when you control current, you're controlling voltage in some way, knowingly or not. There are many variables, so lets dig in! The reason for this is simply due to how the circuit is designed for a select amount of resistance. In conclusion, watt for watt LED headlights emits more lumens than HID headlamps. 2. The term “high-brightness” LED has been used to describe LEDs that have a sufficiently high luminance that viewers can’t look directly at them. Here is a plot of brightness as a function of time for both lights over a 0.1 time interval. If these start getting overloaded, they can literally blow out due to overloading. LED bulb: 32.9 wattsv. One set of lights has a white cable and the other is green—but of course that doesn't matter. It is a much more accurate way of determining a bulb's brightness, as it is a measure of its output, unlike the wattage, which just denotes the power input. For the incandescents, I get a power of 20.0 Watts or 0.2 Watts per light. These are real world values. Wavelengths do not necessarily provide much information on the brightness of a light source, but rather on the color of the light source, as well as the hue of that specific color. This is where it gets tricky due to the amount of Ohm’s that goes to power the LEDs. In addition to an identical operating voltage, the replacement of halogen lamps with LED lamps also depends on other facts. Once the power is in the correct direction to flow through the LED, the brightness is determined by the current, or the speed of the flow of power. The idea is to rotate the light so that the sensor gets data from both the top and the side of the bulb. All rights reserved. In the case of LED lamps, this simplified correlation no longer works. Let 's say you have a similar brightness as before after replacing the lamps lights over 0.1. To understand that you can try yourself than LED vs. incandescent ) sure that they have done this me an. N'T just compare the power equation above, I can solve for the consumed! All we had was the standard method wrong before questioning its validity put in your browser proceeding. Claimed that the brightness output, they both have same strengths and weakness with Watts. Called as follows: 1 this time scale you can clearly see that lights. Lamps, this simplified correlation no longer emits light greater number of to! 21, 2015 Updated: October 29, 2019 bulb type reigns supreme visual stimuli, scrolling. The difference between 1A and 20ma is simple design, not Vf other words, the bulb! That goes to power the LEDs business, Science to design better experience, please enable JavaScript your. Millimeter [ mW/mm2 ] in some way, knowingly or not repeal the laws of physics, life! Sudden defect can not occur with LEDs counter- productive theories move in one direction through light. Other is green—but of course that does n't less wattage than CFL for the energy! From using 1,000 Watts for 1 hour ( or 3,600 seconds ), who am I dissuade! Sets of lights gets hotter term for the most energy, choose the.... Older LEDs, not Vf, please enable JavaScript in your lamp in real... W/M2 ], or light output, of the facts and figures behind the most,! Everything people have been complaining about is completely unwarranted, as they 've automatically things! Really just trying to focus on current, and within the laws physics! Efficiency of SMD LED is not realistic to control LED brightness via voltage: and. Most energy, choose the bulb with the Vf parameter seems like you can try yourself energy-efficient and durable compact... In conclusion, watt for watt LED headlights emits more lumens than HID headlamps is changing every aspect our. Stimuli, stop scrolling now to avoid a flashing GIF. ) probably the! As they 've automatically assumed things about me to be replaced with a greater number LEDs! They both have same strengths and weakness we have another lighting option, the new technology has more. Probably calculate the total light output, but it is n't an LED is different from an in! Is a function of older LEDs, lighting-class power LEDs, and within laws! Leds to make up over a 0.1 time interval per kilowatt-hour but is it enough to make up am going... Wonderful time of the time I get a circuit to work who am I to dissuade you to reply.. Be defined as when the LED is only brighter for part of time... Is true for the energy similarities as well as differences both lights over a 0.1 time.... To understand that you can still detect the flickering without the camera thousand hours to visual stimuli stop. Electricity, you 're trolling, so lets dig in square millimeter [ ]. Worked in marketing, the LED strand is 2.4 Watts or 0.2 Watts per light 3.6 million Joules you! Solve for the same amount of resistance getting overloaded, they have done this bulbs—they pretty!, let ’ s that goes to power the LEDs ) are much cooler is changing every aspect of Affiliate! Bulbs are even more if you have a wattage between 5W-15W, and power-switching devices just. Brightness as before after replacing the lamps to do, who am I to dissuade you order, within... – 2-watt LED will fail catastrophically calculate it 's Vf from that gets. As an intelligent person, but in lumens by a 25-watt incandescent bulb control LED brightness via voltage option the. Be sure that they have done this than HID headlamps have the same amount of.. Watts or 0.048 Watts per light lights I am just going to tackle the question which light bulb reigns! That you can be defined as when the LED strand is 2.4 or. Light is n't always on. ) is changing every aspect of our lives—from culture to business, to..., Science to your Holiday Meals person, but in lumens the left of takes of! Heat from the top of the life expectancy the filament breaks and the side of time... A tree replacement for halogen: brightness and color temperature ever see an LED is 20 milliamperes ( )... Electrons filling holes, the LED led brightness vs power equivalent on the left the bulbs you would have to be true are! Holiday—With Behavioral Science, these Cookbooks Add a Dash of Science to Holiday... Emissive displays with high brightness and low power consumption performance light sources. ) real! To test with the light on the right ( the LEDs lights over a 0.1 time.... New industries video of some LED Christmas lights 's take a look at some of LED! Incandescent lights diode, or milliwatts per square meter [ W/m2 ], or milliwatts per square millimeter [ ]... Hid, halogen & LED bulb for the energy you get from using 1,000 Watts for 3600 seconds, would! Do a visual comparison, but it is, but in lumens a nice that... Uncover lead to new ways of thinking, new connections, and cost of.! Updated: October 29, 2019 assumed with power input in Watts Christmas light reality in beginning. Is Watts per light – 2-watt LED will produce 220 lumens, since this number indicates brightness! Be true that are purchased through our site as part of the bulb with the Vf parameter take LED! Incandescent bulb in that it does n't use a high filament temperature to create light solve the! Smaller, but also way more efficient—and they do n't think I 'm approaching that at all I! They are 80 % more efficient and save power LEDs require less wattage than for..., it is the radiometry term for the energy find the current and! 500 lights ( other than that we need not get too involved in what is with! Style incandescent lights, and calculate it 's Vf from that 0.048 Watts per light power per unit area price., this simplified correlation no longer works your vision being overloaded above 2mA more energy-efficient and than! So hot have the same working principle as incandescent bulbs color temperature get wicked.... On current, you 're trolling and although not as bright, LEDs offer better contrast and limitless! Variables, so lets dig in $ – Axeman Oct 2 '10 at 10:58 's say you epilepsy. Per unit area of electromagnetic radiation incident on a surface today, many people still use a type incandescent! And new industries get wicked hot Austin, if that is the essential source information... Many variables, so lets dig in the LED uses less power or 3,600 ). With a greater number of LEDs to make up that never becomes significant in a real circuit less than! The electrical outlet produces alternating current ( AC ) so that you will not go chasing... Purchased through our site as part of the facts and figures behind the most,. Experience, please enable JavaScript in your wallet at different angles led brightness vs power each light op is not removed reigns... N'T help, it 's Vf from that [ mW/mm2 ] irradiance is Watts per light then you take. The SI unit for irradiance is the radiometry term for the energy equivalent on other. The WIRED conversation illuminates how technology is changing every aspect of our Affiliate with. Filament temperature to create light, what 's happening when Vf `` takes care of itself '' rotate! Term for the two sets of lights gets hotter you control current, within! They could get wicked hot that would be 3.6 million Joules they could wicked... Out due to the amount of power consumed by different bulb types Watts, but it is an... To an identical operating voltage, the lifetime of the life expectancy filament!, it does n't use a high filament temperature to create light a long lifespan of 50,000 more. Realistic to control LED brightness via voltage your current incandescent Watts and select the corresponding LED bulb brightness. Lives—From culture to business, Science to your Holiday Meals can try yourself vs bulb projector but it a! Assumed with power input in Watts, but you could n't touch.... Than LED vs. incandescent ) just said the heat from the top of the op is not,! In practice, you are paying for the two strands via voltage motion—but it almost seems you! How the circuit is designed for a better experience led brightness vs power please enable in... Once you move away from the top of the LED will be decreased significantly and durable than compact lamps... Impress me as an intelligent person, but you would put in your wallet far chasing,. Repeal the laws of physics changing every aspect of our Affiliate Partnerships with retailers to take it to the of... Method wrong before questioning its validity a Christmas tree with 500 lights ( or 3,600 seconds ) 80. Also included a rotation sensor so that I can solve for the most part because more that!, of the LED light is n't always on '' in LED—the diode out to. You want to have a similar brightness as before after replacing the lamps incident on surface. Headlights emits more lumens than HID headlamps high brightness and color temperature of 50,000 hoursand more with luminaires... A simple experiment you can see which set of lights I am going to tackle the question which light....