The difference between LED stadium floodlight and floodlight

The difference between LED stadium floodlight and floodlight

LED floodlights are also called spotlights, projection lights, spotlights, etc. They are mainly used for architectural decoration lighting and commercial space lighting. They have heavier decorative components and have round and square shapes. Generally, the reasons for heat dissipation must be considered, so its appearance is still somewhat different from traditional floodlights.
LED flood light classification:
1. Rotationally symmetrical shape
The luminaire adopts a rotationally symmetrical reflector, and the symmetry axis of the light source with rotationally symmetrical light distribution is installed along the axis of the reflector. The iso-intensity curves of this type of lamps are concentric circles. When this type of spotlight is illuminated by a single lamp, an elliptical spot is obtained on the illuminated surface, and the illuminance is uneven;
However, in the case of multi-lamp lighting, the light spots are superimposed on each other, which can produce satisfactory lighting effects. For example, hundreds of rotationally symmetrical floodlights are commonly used in stadiums, and they are installed on high towers around the stadium to obtain high illuminance and high uniformity lighting effects.
2. Two symmetrical plane shapes
The iso-intensity curve of this type of projector has two symmetry planes. Most luminaires use symmetrical cylindrical reflectors, and linear light sources are installed along the cylindrical axis.
3. A symmetrical plane shape
The isobaric intensity curve of the luminaire has only one symmetry plane (Figure 2). The luminaire adopts asymmetrical cylindrical reflector or symmetrical cylindrical reflector plus a grid that restricts light. The most typical is the sharp cut-off block retracted light distribution. This kind of light intensity distribution single lamp can obtain a more satisfactory illuminance distribution.
4. Asymmetrical shape
The iso-intensity curve of this type of luminaire does not have a plane of symmetry. Mainly use mixed light lamps with different types of light sources with large differences in light intensity distribution and special lamps designed according to the specific lighting requirements of the place of use.
LED flood light characteristics:
At present, the commonly used LED floodlights on the market basically use 1W high-power LEDs (each LED component will have a high-efficiency lens made of PMMA, and its main function is to secondarily distribute the light emitted by the LED, which is two Secondary optics), a few companies have chosen 3W or higher power LEDs because of the good heat dissipation technology. It is suitable for large-scale occasions, lighting, buildings and other lighting.
1. High-purity aluminum reflector, the most accurate beam and the best reflection effect.
2. Symmetrical narrow-angle, wide-angle and asymmetric light distribution systems.
3. Open the back to replace the bulb, easy to maintain.
4. The lamps and lanterns are equipped with a scale plate to facilitate the adjustment of the irradiation angle.
The LED flood light is controlled by a built-in microchip. In small-scale engineering applications, it can be used without a controller. It can achieve dynamic effects such as gradation, jump, color flashing, random flashing, and gradual alternation. It can also be controlled by DMX. Achieve effects such as chasing and scanning.
At present, its main application places are probably these: single buildings, exterior wall lighting of historical buildings, building interior and exterior lighting, indoor local lighting, green landscape lighting, billboard lighting, medical culture and other special facility lighting, bars, Atmosphere lighting in entertainment venues such as dance halls, etc.
The LED flood light is a point light source that can illuminate uniformly in all directions. Its illumination range can be adjusted arbitrarily, and it appears as a regular octahedron icon in the scene. Floodlights are the most widely used light source in the production of renderings. Standard floodlights are used to illuminate the entire scene. Multiple floodlights can be used in the scene to produce better results.
Floodlights are the most widely used light source in renderings. Multiple floodlights can be used in the scene to coordinate their effects to produce better results. It is to illuminate the object uniformly in all directions from a specific point. It is best to use it as an analogy to a light bulb and a candle. Floodlights can be placed anywhere in the scene.
For example, it can be placed outside the camera's range or inside an object. It is common to use many floodlights of different colors in the scene at a distance. These floodlights can cast shadows and mix them on the model.
Because the floodlight has a relatively large illumination range, the illumination effect of the floodlight is very easy to predict, and there are many auxiliary uses of this kind of light. For example, if the floodlight is placed close to the surface of the object, it will be on the surface of the object. It produces a bright light.
It should be noted that floodlights cannot be built too much, otherwise the renderings will appear flat and dull. Therefore, in the usual rendering of renderings, pay more attention to the impact of lighting parameters and layout on the light perception of the entire renderings scene, accumulate more experience, and master the lighting matching skills.
Features of floodlights:
Under low current, the temperature rise of the LED flood light is not obvious. If the ambient temperature is high, the dominant wavelength of the LED floodlight will be red-shifted, the brightness will decrease, and the uniformity and consistency of the luminescence will deteriorate. In particular, the temperature rise of dot matrix and large display has a more significant impact on the reliability and stability of LED floodlights. So the heat dissipation design is very important.
Floodlights illuminate objects uniformly in all directions from a specific point. It is the best analogy to light bulbs and candles. Floodlights can be placed anywhere in the scene. For example, it can be placed outside the camera's range or inside an object. It is common to use many different colored floodlights in the scene at a distance.
These floodlights can project and blend the darkness on the model. Because the floodlight has a relatively large illumination range, the illumination effect of the floodlight is very easy to predict, and there are many auxiliary uses of this kind of light. For example, if the floodlight is placed close to the surface of the object, it will be on the surface of the object. It produces a bright light.
The difference between floodlights and floodlights
The difference between floodlights and floodlights is not only reflected in the visual effects of lighting, but also different precautions in use.
Floodlights can't be built too much, so the visual effect will appear dull and dull. In the production, pay more attention to the lighting parameters and the impact on the light perception of the entire rendering scene.
The items that need to be paid attention to for the floodlight are: the most accurate beam, high-purity aluminum reflector, the best reflection effect, symmetrical narrow-angle, wide-angle and asymmetrical light distribution system, and the floodlight fixtures are equipped with scale plates for convenience Adjust the illumination angle.
The difference between floodlights and floodlights is also reflected in the range of illumination between the two. Spotlights are also called projection lights, spotlights, spotlights, etc. They are mainly used for architectural decorative lighting and commercial space lighting. They have heavier decorative components and have more styles in design.
The floodlight is a point light source that can evenly illuminate all places in all directions, and its illumination range can be adjusted arbitrarily. Standard floodlights can be used to illuminate the entire scene.
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