Difference Between Spot And Flood Light

spotlights are lamps designed to illuminate the illuminated surface higher than the surrounding environment. Also called spotlight. Generally, it can aim in any direction and has a structure that is not affected by climatic conditions. Mainly used in large-area operation fields, building outlines, stadiums, overpasses, monuments, parks and flower beds. Therefore, almost all large-area lighting fixtures used outdoors can be regarded as spotlights. The angle of the exiting beam of the spot light is wide and narrow, and the range of variation is between 0 °and 180 °. Among them, the light beam is particularly narrow and is called a searchlight.

LED spot light classification:

1.Rotationally symmetric

The lamp uses a rotationally symmetric 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 curve of these lamps is concentric circles. When this type of flood light is illuminated by a single lamp, an elliptical light spot is obtained on the illuminated surface, and the illumination is uneven; but when multiple lights are illuminated, the light spots overlap each other, which can produce a satisfactory lighting effect. For example, hundreds of rotationally symmetrical floodlights are commonly used in stadiums and installed on high towers around the stadium to obtain high-illumination and high-uniformity lighting effects.

2.Two symmetrical planar shapes

The iso-intensity curve of this type of flood light has two symmetrical planes. Most of the lamps use symmetrical cylindrical reflectors, and the linear light source is installed along the cylindrical axis.

3.A symmetrical plane shape

The isoluminance curve of the luminaire has only one plane of symmetry. The luminaire uses an asymmetric cylindrical reflector or a symmetrical cylindrical reflector plus a grid plate that restricts light. The most typical is a sharp cut-off block-type light distribution. Such a light intensity distribution single lamp can obtain a more satisfactory illumination distribution.

4.Asymmetry

The iso-intensity curve of this type of luminaire does not have a plane of symmetry. It is mainly 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.

Practical application of LED spot light

1.LED spotlight is mainly used in single building, historical building exterior wall lighting, building exterior lighting, indoor lighting, green landscape lighting, billboard lighting, medical culture and other special facilities lighting, bars, dance halls and other entertainment venues Ambient lighting. Note: High-purity aluminum reflector, the most accurate light beam, the best reflection effect, symmetrical narrow angle, wide-angle and asymmetric light distribution system, behind the open replacement bulb, easy to maintain LED flood light with scale plate adjustment Lighting angle. Projecting a certain area of a building is nothing more than the use of round and square head shaped light fixtures that control the beam angle, which is completely consistent with the traditional light fixture concept. However, due to the small and thin light source of LED flood light, the research and development of linear projection light has undoubtedly become a highlight of LED spotlight, because many buildings have no outstanding place to place traditional flood light. It is convenient to install, can be installed vertically, and better integrates with the building surface, bringing new lighting vocabulary to the lighting designer and expanding the creative space. It will have an impact on the lighting methods of modern and historical buildings.

2.As the LED spotlight is not a glass bulb like traditional light sources, it can be organically combined with urban street furniture. Can be illuminated in urban leisure spaces such as paths, stairs, decks, waterfronts, gardening. For flowers or low bushes, LED can be used as the light source for lighting. LED concealed spotlight fixtures will be particularly favored. The fixed end can be designed as a plug-in type, which is easy to adjust according to the height of the plant.

3.Places that need space limitation and guidance, such as separate display of roads and pavements, local lighting of stair steps, and instructional lighting of emergency exits, can use LED flood lights with appropriate surface brightness to illuminate underground lights or embed in vertical walls Surface lighting, such as floor guidance lights in the auditorium of a movie theater or indicator lights on the side of seats, and guidance lights on floors in shopping malls. In addition, compared with neon lights, LED flood lights are low voltage and do not have fragile glass, which will not increase costs due to bending during production. It is worth promoting in logo design. In terms of lighting quality, because LED flood lights do not have heat, ultraviolet and infrared radiation, they will not cause damage to exhibits or goods. Compared with traditional light sources, lamps do not require additional filtering devices. The lighting system is simple, low cost and easy to install. . Its precise lighting can be used as a substitute for fiber optic lighting in museums. Commercial lighting metropolises use colored LED. Indoor decorative white LED combined with interior decoration provide auxiliary lighting for the interior. LED can be used for hidden light strips, which is particularly advantageous for low spaces.

4.Due to the dynamic and digital control of color, brightness and dimming of LED flood lights, lively saturated colors can create static and dynamic lighting effects. From white light to any color in the full spectrum, the use of LED opens up new ideas in the lighting of such spaces. Long life and high lumen maintenance value (90% luminous flux after 10,000 hours), compared with the metal halide lamp’s 50-250 hours life, it reduces maintenance costs and the frequency of replacing light sources. In addition, LED flood lights overcome the color shift phenomenon of metal halide lamps after a period of use. LED spotlight has a very wide range of applications, which has brought great convenience to our work and life. Thanks to it, we can have so many colorful lighting effects at night.

Floodlight concept

A flood light is a point light source that can illuminate uniformly in all directions. Its irradiation range can be adjusted arbitrarily. The flood light creates a highly diffuse, non-directional light instead of a sharply defined beam, resulting in shadows. Soft and transparent, when used to illuminate objects, the rate of illumination diminishes much slower than when spotlights are used, and even some floodlights that diminish very slowly, look like a light source that does not produce shadows. Spotlights project a directional, well-defined beam of light to illuminate a specific area.

Application range of flood light

Flood light is the most widely used light source in the effect map. Multiple flood lights can be used to coordinate the scene to produce better results. It is to illuminate objects uniformly from a specific point in all directions. 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 range of the camera or inside an object. It is common to use many different colors of floodlights at long distances in the scene. These floodlights can cast shadows and blend on the model. Because the range of the floodlight is relatively large, the effect of the floodlight is very easy to predict, and there are many auxiliary uses for this kind of light. Produces a bright light.

It should be noted that the floodlight cannot be built too much, otherwise the rendering will look dull and dull. Therefore, in the production of the usual renderings, pay more attention to the effects of lighting parameters and layout on the light effect of the entire renderings scene, accumulate more experience, and master the lighting matching skills.

Features of flood light:

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 flood light will be red-shifted, the brightness will be reduced, and the uniformity and consistency of the light will deteriorate. In particular, the temperature rise of the dot matrix and large display has a more significant impact on the reliability and stability of LED floodlights. So thermal design is critical.

Advantages of Floodlight

1.Long life, because the floodlight has no electrodes, it emits light by combining the principle of electromagnetic induction with the principle of fluorescent discharge, so there are no life-limiting components, saving material costs and labor costs;

2.Energy-saving, 85W flood light is equivalent to 500W incandescent light source;

3. Environmental protection, the use of solid mercury agent will not cause pollution to the environment, and has a high recovery rate;

4.Good color rendering, its color rendering index is greater than 80, and light color is soft and natural;

5.No pre-heating is required, and it can be started and restarted immediately. There will be no light decay phenomenon when switching on and off repeatedly. Let’s take a look at the characteristics of floodlights:

6.No strobe, the working frequency of the flood light is very high, there is no strobe effect at all, it will not cause eye fatigue, and protect our strength and health;

7.Color temperature is optional, can be freely selected from 2700k-6500k according to needs, and can be made into colored light bulbs for use in garden lighting;

8.Excellent electrical performance, high power factor of the flood light, can output a constant luminous flux;

9.High adaptability to installation, can be installed in any orientation without restriction.

The difference between flood light and flood light

The difference between floodlights and floodlights is not only reflected in the lighting visual effects, but also the precautions in use are different. Floodlights can’t be built too much, so the visual effects will look bland and dull. Pay attention to the lighting parameters and the light effect on the entire rendering scene in the production. The spotlights need to pay attention to: the most accurate light beam, high-purity aluminum reflector, the best reflection effect, symmetrical narrow-angle, wide-angle and asymmetric light distribution system, the floodlight lamps are equipped with scale plates for convenience Adjust the irradiation angle.

Irradiation range

The difference between a flood light and a flood light is also reflected in the irradiation range between the two. Spotlights are also called spotlights, spotlights, spotlights, etc. They are mainly used for architectural decorative lighting and commercial space lighting. Their decorative components are heavier and there are more styles in the design. A flood light is a type of light source that can illuminate evenly any place in all directions. Its irradiation range can be adjusted arbitrarily. Standard flood lights can be used to illuminate the entire scene.

In the future

As technology matures and market demand gradually starts, the LED industry will enter a new round of growth, and it will develop in the direction of higher light efficiency, lower cost, higher reliability and wider application, such as intelligent lighting, optical communication technology, etc . In the near future, intelligent lighting will not only exist as a light and a switch. It will be connected with the home and become a home system, providing users with a comfortable environment and services in all directions. With the development of smart homes, smart cities, and the joining of the Internet of Things, smart integrated solutions connect different smart items into a smart blue ocean. The nature of intelligent lighting is electronic and networked, which not only can realize the intelligent control of lighting systems, realize the basic functions of automatic adjustment and scene lighting, but also an entrance to the Internet, thereby deriving more high-value-added services, such as health management , Map positioning, shopping guides and advertising. It is foreseeable that in addition to subverting the traditional appearance of future LED products, it will inevitably trigger a technological revolution in intelligent lighting.