Light output – Total light output measured in lumens. Lumens has become the most commonly used unit of measure for total light output in portable lighting devices such as flashlights, headlamps and lanterns. Wattage, on the other hand, is a measurement of power consumption, not light output. With today’s super efficient LED technology, it’s very possible to have a 1 watt LED flashlight with a greater light output than another flashlight with a higher wattage rating, particularly if the higher wattage light source is less efficient.
Beam distance – The distance, measured in meters, at which the light projects a useful amount of light, measured at 0.25 lux. (0.25 lux is approximately the equivalent of light emitted from a full moon “on a clear night in an open field.”)
Run time – Tested with fresh batteries from 30 seconds after the light is turned on until the light output reaches 10% of the initial measurement.
Peak beam intensity – The brightest point in the beam measured in candela. Candela is the modern unit of measure for light intensity replacing the now-obsolete unit known as candlepower. Although candlepower was replaced by candela in 1948, it is still in common use.
Impact resistance – The height, measured in meters, from which the light can be dropped onto cured concrete and still work properly. Dropped samples cannot have any visible cracks or breaks and must remain fully functional to receive this rating.
Water resistance – This icon indicates an IPX4 rating which means the sample is tested against splashing water from all angles. If this test is performed it must be done after impact resistance testing is completed to ensure water resistance under real-life conditions.
Water resistance – Water submersion depth rating, measured in meters. This icon indicates at least an IPX7 rating which means the sample is submerged to a minimum of 1 meter depth for 30 minutes. If this test is performed it must be done after impact resistance testing is completed to ensure water resistance under real-life conditions.
With the adoption of these new standards, we’ll be able to more easily compare apples to apples (or flashlights to flashlights). Whether you’re looking for a light for your workshop, camping and outdoor use, emergency use, or just around the house, you’re sure to get the best flashlight, headlamp, or lantern to suit your needs by comparing lights that use the ANSI FL1 flashlight standards in their packaging and advertising. Happy hunting!
The answers to the most commonly asked questions on loudspeakers.
All the things you want to know about the diference between hazers, fazers and Fog Machines
Lumen is the international (SL) unit of luminous flux, a measure of overall light emitted by a light source.
Candela is the international (sl) unit of luminuous intensity, a measure of light emitted by a light source in a particular direction. Any given light source will have different luminous intensities in different directions considered. [candela = lumen/solid angle]
Beam angle is the angle between two directions for which the luminous intensity is 50% of the maxmum intensity as measured in a plan through the nominal beam centerline. Beam angle of a bulb gives an idea of how the light beam spreads away from the beam center.
Lux is the international (SL) unit of illuminance, a measure of light arriving at a surface, 1 lumen per square foot equals 1 footcandle, while 1 lumen per square meter equals 1 lux .
[lux = lumen/m2]
A black-Body radiator will have a different color whent it is heated up to different temperatures (in kevin).The Temperature at which the heated black-body radiator matches the color of the light source is the color temperature of the light source.
Color rendering index ranges from 0-100 ,measures a light source's ability to reproduce the color of various objects being lit by a reference light source, black body radiator (CRI=100)
Eifficacy is the effciency of a light source to concert electricity energy to light energy which is expressed in lumen output per unit power input (watt). [Efficacy = lumen / wattage]
8) Design Life Time
Design life time is the average life of a lighting product when it is operated at nominal lamp voltage,current and controlled working environment. Actual lamp life varies because of any different from those rating condition.
Not all lighting prodcuts is designed for dimming function. Dimming a non-dimmable LED lighting product will cause un-predictable result and may affect the life time of the products. The below figure shows the typical input current variation while adjusting the DC voltage input to dimmable and non-dimmable product.
View outdoor LED Screens and LED Displays
1. What dimension will your LED screen display or LED sign be that you want to install?The size of the outdoor LED screen displays and LED signs are very important to know to determine the resolution per square meter we have to set for the screen. This is to avoid low quality video with very little detail or a very high quality video that is not necessary (in some cases it depends on the customer´s project type). The variable that decides the LED screen resolution per square meter is called the pixel pitch, which tells us the distance between the LED´s in millimeters. The shorter the distance of the LED´s, the higher the screen resolution per square meter, and a greater distance, the resolution will be less. In other words, small LED screen displays require a higher resolution per square meter to achieve complete resolution of the screen (Our recommendation would be a minimal of 43,000 pixels for video standard quality without losing detail) and among the largest LED screen displays less resolution m² is needed to reach a total of 43,000 pixels resolution. Remember that LED screen displays that will show videos with a normal quality standard must have a minimall of at least 43,000 physical pixels (or real pixels) in total, and high definition LED display screens at least a total of 60,000 physical pixels (or real pixels). If you require a glarge LED screen display where the closest viewing distance is very small, 8 meters for example, we recommend LED screen displays with virtual pixels. With virtual pixels, the number of physical pixels will be multiplied with a factor of 4. This means that if a LED display screen has a total of 50000 physical pixels has a total of 200,000 virtual pixels. The minimal viewing distance will be half of the distance of a LED screen display with real pixels. 2. What will be the minimal viewing distance from your LED screen display to the closest spectators?The minimal viewing distance is the distance from where the closest pectators will be viewing the LED display and the LED screen display itself, taking the hypotenuse (a hypotenuse is the longest side of a right triangle, the side opposite of the right angle) in this case. How can we calculate the hypotenuse? It's easy; the length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two other sides. That means H² = L² + A², and in practice would be as follows: if H = Hypotenuse, L = Length, A = Altitude: We want to set a screen at a height of 12 meters where the nearest spectator will see the screen from a distance of 5 meters. The calculation would be following: H² = 5² + 12² ⇒ H² = 25 + 144 ⇒ H² = 169 ⇒ H = √169 ⇒ 13 meters. So we need to find a LED display screen of 15 sqm with a configuration that will give us a minimal viewing distance of approximately 13 meters. 3. What will be the total resolution of the LED screen display?To find out if we have the right configuration for your LED screen display, that will show videos of normal quality or high-definition videos, we have to make another kind of simple calculation. In point two we mentioned an important point about showing videos with a normal standard definition, where we consider a screen with at least 43,000 pixels, or a screen with a high-definition video, with at least 60,000 pixels or more. Now we have to calculate this, the calculation is as follows: the total size of the LED screen display multiplied by the resolution per square meter of the configuration you chose with point 2. For example, if we want to install a 15 square meter LED display screen, and the closest viewing distance is 13 meters (like we calculated in point 2) we can choose a LED display screen of 16mm with physical pixels and virtual pixels, or 20mm with virtual pixels. Why 16mm real pixel and 20mm virtual pixel? Because the closest viewing distance of these configurations are about > 15 meters. So in this case, (1) for the 16mm real pixel LED display the total number of physical pixels is 3,906 per sqm, (2) for the 16mm virtual pixels 3,906 x 4 = 15,624 total virtual pixels, (3) and for the 20mm virtual pixel LED display it will be 2,500 physical pixels per sqm x 4 = 10,000 virtual pixels per sqm. So the final calculation will be:
How can I become a dealer?
Generally every potential client has to fill in an application form (press here) and send it back together with their Chamber of Commerce papers.
After we’ve received all documents we wil contact the applicant with all possibilites.
Do you sell to end-users?
No, we only sell to our appointed dealers and to our selected b-2-b clients. For any inquiries you can contact our dealers, who you’ll find here.
They will assist you from preliminary product and installation advice, guide you through the purchasing process and provide you with all necessary after-sales service.
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