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Understand the difference between LED floodlights and floodlights in one article

Update:06-02-2021

LED flood light

LED floodlights are also called spotlights, spotlights, spotlights, etc. They are mainly used for architectural decorative lighting and commercial space lighting. They have heavier decorative components and have round and square shapes. Generally, the reason for heat dissipation must be considered, so its appearance is still somewhat different from traditional floodlights.

LED flood light classification:

1. Rotational symmetry

The luminaire adopts a rotationally symmetric reflector, and the symmetry axis of the light source with rotationally symmetric light distribution is installed along the axis of the reflector. The iso-intensity curves of this kind 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 illumination is uneven;

However, in the case of multi-lamp lighting, the light spots overlap 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 illumination and high uniformity lighting effects.

2. Two symmetrical plane shapes

The iso-intensity curve of this type of projection lamp 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

There is only one symmetry plane for the equal intensity curve of the lamp. The luminaire adopts an asymmetric cylindrical reflector or a 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. Asymmetric shape
The equal intensity curve of this kind of lamps has no symmetrical plane. It mainly adopts different kinds of light sources with different light intensity distribution and special lamps designed according to the specific lighting requirements of the use place.

LED flood light features:

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, etc.

What else should be paid attention to for the flood light?

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-back light bulb replacement, easy maintenance.

4. The lamps are all attached with a scale plate to facilitate the adjustment of the irradiation angle.

LED projector is controlled by built-in microchip. In small engineering applications, it can be used without controller. It can achieve dynamic effects such as gradual change, jump, color flicker, random flicker and gradual change alternation. It can also achieve chasing, scanning and other effects through the control of DMX.

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 and cultural and other specialized facility lighting, bars, Atmosphere lighting in entertainment venues such as dance halls, etc.

LED flood light

The LED floodlight 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 effects. It is to illuminate the object uniformly in all directions from a specific point. It is best to use it as an analogy to light bulbs and candles. Floodlights can be placed anywhere in the scene.

For example, it can be placed outside the camera range or inside an object. It is common to use many different color floodlights in the scene at a long distance. These floodlights can cast shadows and mix them on the model.

Due to the large range of floodlights, the illumination effect of floodlights 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 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 light will deteriorate. In particular, the temperature rise of the dot matrix and large display screens 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 range or inside an object. It is common to use many different colored floodlights at a distance in the scene.

These floodlights can project and blend the darkness on the model. Due to the large range of floodlights, the illumination effect of floodlights 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.

Difference between floodlight and floodlight
The difference between floodlight and floodlight is not only reflected in the visual effect of lighting, but also in the matters needing attention in use.
Floodlights can not be established too much, so the visual effect will appear dull and rigid, in the production of more attention to experience the lighting parameters and the impact on the light perception of the whole rendering scene.
The matters needing attention of the projector are: the most accurate beam, high-purity aluminum reflector, the best reflection effect, symmetrical narrow angle, wide angle and asymmetric light distribution system. The projector lamps are equipped with a scale plate to facilitate the adjustment of the irradiation angle.

The difference between floodlight and floodlight is also shown in the range of illumination between them. Projection lamp is also called projection lamp, spotlight, spotlight, etc. it is mainly used for architectural decoration lighting and commercial space lighting. Its decorative component is heavy, and there are many styles in modeling design.
The floodlight is a kind of point light source that can irradiate evenly in all directions, and its illumination range can be adjusted arbitrarily. The standard floodlight can be used to illuminate the whole scene.