Info center

Whats the Difference Between Rgb Flood Lights and LED Downlights?

LED DownlightWhen contacting LED equipments, sometimes we come across two different equipments, LED Downlights and rgb LED flood lights. So what is the difference between them?LED Downlight is also called LED spotlight, LED castlight, LED shoot light and so on, it mainly used for architectural decoration lighting, and commercial space lighting, decorative elements are heavier, its appearance is round and square, because generally have to consider the cause of heat dissipation, so there are some differences between the shape and the traditional spotlight.

features of LED Downlight:At present, the commonly used LED Downlight in the market basically choose 1W high-power LED(each LED component will have a high-efficiency lens made of PMMA, whose main function is to distribute the light emitted by LED, namely secondary optics). There are also a few companies that choose 3W or even higher power LED due to the good heat dissipation technology.Suitable for large occasions, such as lighting, building lighting.

rgb LED flood lightrgb LED floodlight is a point light source that can be uniformly illuminated in all directions. Its irradiation range can be adjusted arbitrarily, and it is shown as a regular octahedron in the scene.Floodlights are the most widely used light source in rendering.

Standard floodlights illuminate the entire scene. Several floodlights can be used in the scene to produce a better effect.Floodlight is a kind of illuminant with the most extensive application in effect diagram, in setting can use much floodlight to coordinate action, in order to produce better effect.

Features of rgb LED flood lights:The best analogy to a light bulb and a candle is to shine an object uniformly in all directions from a particular point. Floodlights can be placed anywhere in the scene.For example, it can be placed out of camera range or inside an object.

It is common to use many different colored flood lights at great distances in a scene. These floodlights can cast shadows and blend them into the model.Because the illuminative range of floodlight is bigger, so the illuminative effect of floodlight is very easy to predict, and this kind of lamplight still has a lot of auxiliary use, for example, place floodlight to be close to the position of object surface, can produce bright light on object surface.

Pay attention to, that rgb LED flood lights should not be built too much, or renderings will appear flat and rigid. Therefore, we should pay more attention to the effect of lighting parameters and layout on the light sense of the entire effect diagram scene in the usual rendering, and accumulate more experience to master the lighting collocation skills.The difference between LED Downlights and floodlightsThe distinction of rgb LED flood light and LED Downlight is shown not only on illume vision effect, the matters needing attention in using to rgb LED flood light and LED Downlights also differs somewhat.

The difference between rgb LED flood light and LED Downlight is that rgb LED flood light cannot be built too much, so in the visual effect will appear flat and inflexible, in the production of more attention to experience the light parameters and the effect on the whole picture scene light sense. The distinction of rgb LED flood light and LED Downlight still behaves on the illuminate range between them, LED Downlight is called again cast shoot the lamp, spotlight, shoot the lamp to wait, basically do architectural adornment illume and commercial space illume, its adornment sex composition is heavier, design kind is more on modelling design.A rgb LED flood light is a kind of uniform point light source that can shine in all directions and places, and its irradiation range can be adjusted arbitrarily.

A standard rgb LED flood light can be used to illuminate the whole scene. RELATED QUESTION I didn't get Google Glass Explorer Edition. Is trying to learn Glass dev without the hardware a futile effort?

No, you can still learn the fundamentals of Glass development without the hardware. There are three main approaches for accomplishing this: 1) Visit the Mirror API documentation, get into the playground, and start hashing up some code. Download the PHP, Java, and Python library, whichever you're most comfortable with.

Familiarize yourself with the jargon and converntions (timeline, bundles, menus, etc). Read the support documentation (second link below) to see how the Glass hardware actually functions. Build some apps to this specification.

Soon enough, you will find a friend with hardware to t

HOT PRODUCTS
no data
GET IN TOUCH WITH US
recommended articles
NEWS Info center Projects
Quality characteristics of illumination
Quality characteristics of illumination
In exterior and interior lighting, the components of illumination quality are determined by visual performance, visual comfort and the visual atmosphere. Here, visual performance comprises the level of illumination and the limitation of glare. Visual comfort determines colour rendering and a harmonious distribution of brightness. The visual atmosphere deals with light colour and light direction. Visual performance Visual performance is determined by the level of illumination. It is influenced by the degree of illuminance and the reflection properties of an illuminated surface. Here, the following applies: The lower the reflection, the higher the degree of illuminance must be. A white wall has a reflection degree of up to 85%, while a red brick facade only has up to 25%. To compensate for low visual performance, the degree of illuminance must be raised. Maintained illuminance Maintained illuminance defines the average degree of illuminance on a reference surface. In the course of the working life of a lighting system, ageing and environmental influences change lamps, luminaires and spaces. The degree of illuminance diminishes. This reduction is described by maintained illuminance. To compensate, new systems should have higher illumination values.Maintained illuminance = maintenance factor x value as new. Maintenance factor The maintenance factor is dependent on the type of lamp, the luminaires, the dirt in the environment and the maintenance intervals. In a clean environment, for example in an office, and with a maintenance cycle of three years, a value of 0.67 can be calculated, and in a dirty room situation 0.5. The surface on which the degree of illuminance is to be implemented is used as a calculation basis. In office workstations, the measurement is taken at a height of 0.75 m above the floor, in traffic areas at a maximum height of 0.1 m. The required maintained illuminance for the degree of illuminance is defined in the standard DIN EN 12464-1 for indoor work places for various types of rooms and activities and in DIN EN 12464-2 for outdoor work places.  
2021 06 12
read more
Luminance and shade
Luminance and shade
Luminance describes the brightness impression that the human eye has of a luminous or illuminated surface. Luminance L is measured in candela per square metre [cd/m²]. Here, the luminous intensity is placed in relation to the illuminated or luminous surface. To assess the quality of road lighting, the calculation of luminance is mandatory. On account of the standardised reflection properties of road surfaces and the definition of the location of the viewer, the calculation of luminance is an integral part of the planning of road lighting. The planning aid “Light for Europe’s roads“ regulates the lighting of roads, paths and squares in accordance with DIN EN 13201. It makes it clear that increasing luminance from, for example, 1 cd/m² to 2 cd/m² reduces the accident rate by about one third. The different luminous flux levels of lamps, different light distribution by the luminaires or varying geometry in lighting systems influence the illumination of a road. Another important factor here is the reflection property of the road surface.In order to evaluate the exact luminance of the carriageway, a flat part of the carriageway must be selected with uniform reflection behaviour. A representative luminaire spacing with two luminaires and an observation location 1.5 m above the centreline of the carriageway is used. Recommendation: Residential street 7.5 lx Main road 1.5 cd/m² Car park 15.0 lx Light defines our spatial environment. Light and shade give room a structure. Objects appear to be plastic, and surfaces are explained. The interplay between light and shade enables us to determine distances and dimensions. Room situations that are visually easy to understand and grasp give us a feeling of safety. There are now two extremes of illumination that cannot be ignored: Diffused light, which hardly develops any shadows, and extremely directed light, with strong shadows. In diffused light, the room does not appear plastic, it appears monotonous. Objects and dimensions are hard to detect. In extremely directed light, individual room elements are strongly emphasised and cast high-contrast, hard shadows. The rest of the room remains unilluminated. Both lighting situations can trigger discomfort and insecurity. A balanced combination of both gives the room dimension and gives objects plasticity. For this reason, many luminaires are developed to combine direct with indirect proportions of light. This leads to a significant increase in their possible applications.  
2021 06 12
read more
Glare limitation · reflected glare
Glare limitation · reflected glare
Reflected glare and direct glare are caused by bright surfaces in the field of vision and are considered to be disruptive factors. The term reflected glare is used to describe irritations that are triggered, for example, by lamps, luminaires or windows with high luminance. This occurs particularly frequently on wet asphalt roads, glossy paper or on display screens. The occurrence of such disruptive factors can be avoided with the right choice of luminaires, lamps and their arrangement in buildings or outdoors. In order to calculate reflected glare on horizontal shining surfaces, the CRF (Contrast Rendering Factor) is determined using suitable software. As a rule, an office has a minimum CRF value of 0.7, and when glossy materials are being used, a higher value must be assumed. Besides the reduction in luminance levels reflected in glossy surfaces (e. g. screens), it is also possible to change the arrangement, thus minimising the reflective surface. Depending on the degree of direct or reflected glare, physiological or psychological glare may occur. Physiological glare is accompanied by problems in perception caused by a reduction in visual performance. The recognition of shapes and depth perception are made more difficult. Psychological glare, on the other hand, is not quantifiable using technical means. Only the subjective sensation of the individual is decisive and opinion-forming. Symptoms may be discomfort, insecurity or fatigue. To ensure that such effects do not occur in the first place, it is good policy to avoid glare, particularly above the horizontal of the field of vision. In indoor illumination, psychological glare is determined by the UGR method (Unified Glare Rating). This is based on a glare formula which takes account of all luminaires in the system that lead to the glare impression. To allow a uniform evaluation to take place, UGR tables provided by the luminaire manufacturers are used.
2021 06 12
read more
Colour rendering & Light colour of lamps
Colour rendering & Light colour of lamps
Sunlight contains all of the colours visible to human beings. With lamps, there are various colour rendering properties. To be able to name these, the value CRI measures colour rendering. The higher this is, the better the colour rendering. An optimum value here is CRI 100, for here all colours are rendered naturally. Human beings experience their environment not only as light and dark, light and shade, but also through colours. The colour designation of lamps consists of three figures. The first figure identifies the colour rendering, the Raarea, the second and third figures the colour temperature in Kelvin. Colour rendering 1. figure Raarea 9 = 90 - 100 8 = 80 - 89 7 = 70 - 79 6 = 60 - 69 5 = 50 - 59 4 = 40 - 49 Light colour 2nd + 3rd figure Colour temperature 27 = 2700 K 30 = 3000 K 40 = 4000 K 50 = 5000 K 60 = 6000 K 65 = 6500 K People’s moods can be influenced by warm or cold colours. The colour impression is determined by the interaction between colour and the viewed objects (spectral reflectance). Warm light colours (up to approx. 2900 K) have a calming effect and ensure a comfortable living situation. Cool light colours, on the other hand, have a higher blue content (over 3300 K) and have an invigorating effect. These are used in places where concentration or an objective mood is to be encouraged. Colour temperatures in Kelvin: warm white < 3300 K neutral white 3300 - 5300 K daylight white > 5300 K Since the light from lamps with the same light colour may have a completely different spectral composition, it is not possible to draw conclusions from the light colour of a lamp about the quality of its colour rendering. The colour triangle defined by the International Commission on Illumination CIE shows how light sources and body colours are to be classified. Achromatic, that is, white when brightness is high and grey or black in the dark, is at x = y = 0.333. The other chromatic colours are around this achromatic point. All spectral colours of sunlight are on the straight line between achromatic and the limiting curve. Colours with the same hue, which gains in saturation in the direction of the limiting curve, can also be found there. The colour triangle thus contains all real colours. The Planckian locus describes the colours of the “black body” at the specified temperature values in Kelvin.    
2021 06 12
read more
About light and illumination
About light and illumination
Types of illumination All light planning tasks can be solved with three types of illumination. General information about illumination In the 1950s, a basic classification of types of illumination was defined by the light planner Richard Kelly (1910 –1977): General illumination “Ambient luminescence” General illumination defines the environment and clarifies room situations. The light is soft and uniform. There are no hard shadows or contrasts. Outdoors, this type of illumination can be found in car parks, pathways and streets. According to the standard, a certain degree of illuminance must be reached here. Indoors, general illumination represents the background light, to be able to grasp the dimensions of a room. Functional illumination. “Focal glow” Useful areas are illuminated with functional illumination. The light focuses on certain areas where increased attention is required by the user, for example on working surfaces, stairs and street junctions with pedestrian crossings. For functional illumination, formal requirements apply in most cases. Accent lighting. “Play of brilliants” Lighting accents illuminate highlights and set the stage for objects and architecture. This lighting should be significantly brighter than the general illumination in order to attract the attention of the viewer. However, this only works when the lighting accents are only used sparingly in the room, for example with objects, architectural details or individual wall surfaces. The three types of illumination cannot be treated independently of each other. On the contrary, it is the balanced proportion of interplay and interaction that makes good illumination. But what is considered to be good light? People feel comfortable and safe in a well-illuminated environment. The spatial dimension can be grasped easily. This demands gradations of light and dark, and the absence of dazzling brightness, light overspill and total darkness. Deliberately planned illumination allows the presence of dark areas, thus underlining its effect. Particularly with architectural lighting, details show themselves to their best advantage with this illumination principle. Indoor and outdoor spaces can be structured using light zones. These illuminated areas model the spaces and create an arc of tension for the viewer. This principle is comparable with daylight. Illuminated and shaded areas in our environment help us to find our bearings and allow us to assess spatial dimensions quickly. We need this interplay of light and shade to provide orientation. LED luminaires allow us to handle light like virtuosos. Precise reflectors, exactly calculated light emission and output classes to match the task in question offer many different design options. Specific areas can be illuminated and remodelled with light. Light is increasingly being used as a mood-forming element. Light can be used to place the focus on distinctive points in architecture or on landscape elements. Cityscapes, for example, can benefit from this. They can be given an unmistakable appearance. The important point here is to establish a visual connection between more strongly illuminated zones and their surroundings. The contrast here must not be too strong, in order to create a harmonious picture. This illumination method applies for outdoors as well as for indoors. Depending on the importance of landscape elements, structures or rooms, a differentiation in the degree of illuminance used is advisable. The light thus suggests visual axes for the viewer and defines his surroundings. The clarification of the spatial situation creates a feeling of safety. Even more specific use of light is possible through control electronics. Depending on requirements, for example events in urban environments, the intensity or the colour of the light can easily be changed. Façades, objects and structures become stage backgrounds – or parks sparkle and shine and attract visitors with an increased degree of illuminance. Light marks special features and sends distinct signals. The ability of the light to change increases the attractiveness of the room Assuming that, in an area to be illuminated, there are enough light sources to be able to cover the sum of general lighting, functional lighting and lighting accents, an enormous effect can be achieved by changing the degree of illuminance of one of the elements of the sum. The lighting atmosphere can thus be changed, favourably as well as unfavourably. Here it is important to ensure that the differences in perceived light are not too great. For the eye, strong contrasts can mean adaptation work, and this can lead to fatigue. Nevertheless, it should be possible to make a clear distinction between the three types of illumination, for only the interplay between brightness and dark zones puts us in a position to find our way in an environment. A concrete numerical definition of the relationships between the types of illumination is only possible under laboratory conditions. In practice, many factors play a role, and this can change the effect of the room considerably. The nature of the illuminated surfaces and their colour influence the reflection characteristics. Outdoors, weather conditions also have to be taken into consideration. Another aspect is that each person perceives light differently and therefore also reacts differently. Subjective feelings also play a role in the interplay between the individual types of illumination. When lighting is being installed, an on-site test should be carried out of what was previously planned through theoretical calculation.
2021 06 07
read more
Led Downlights Explained - Articles Factory
Recessed downlights or "can lights" as they are called in America, are a type of light fixture commonly found in kitchens and bathrooms. Unlike traditional fixtures, which protrude some distance from the ceiling, downlights are designed to sit up inside the ceiling so that only their front face can be seen. A typical downlight consists of a pressed steel or cast aluminium lamp holder with a decorative fascia. During installation, the downlight is inserted into a suitably sized hole where it is held in place with either spring or compression clips, depending on the type of downlight purchased. The physical size and brightness of downlights varies considerably, ranging from small decorative models measuring about 50mm in diameter to large commercial units of about 160mm or so. Downlights offer a number of aesthetic and practical advantages over traditional fixtures. Firstly, they look good, providing plenty of illumination while preserving the neat, streamlined appearance of a modern kitchen, living room or bathroom. Secondly, they are versatile, and can be installed anywhere as long as there is enough room for the housing. Finally, in terms of practicality, downlights can be used individually to create strong task lighting or in combination to create general ambience. In the latter case, many people prefer the option of a dimmer switch, with which to vary the level of light if necessary. When choosing downlights over traditional fixtures, it is important to determine how many and what brightness you need. Downlights should be evenly spaced for complete coverage and to avoid areas of the room being left in darkness. There are a number of "rules of thumb" that can hep you decide the type and number you need. There are a number of different types of downlight available, all with their own merits. Fixed downlights are non-adjustable and direct all their light downwards. Glimbal downlights have a moveable centre, which can be tilted in order to adjust the direction of the beam and create points of focus throughout the room. Eyeball downlights are similar to gimbals, but offer a greater degree of control over the beam angle. Finally, wall washers have a hinged housing that can be rotated 90 degrees for a "wall washing" effect. LED Downlights are some of the latest developments in recessed lighting technology, offering greater longevity, affordability and safety. While most traditional downlights can be retrofitted with LED Bulbs, it is often better to buy a fully integrated LED Downlight. In this case the LEDs are incorporated into the unit and cannot be removed, but offer greater performance and reliability. One of the chief issues surrounding downlights is heat. Due to their design, most of the heat produced by a downlight is directed towards the rear of the unit, which can potentially cause a fire risk, particularly in attic bedrooms where they are in close proximity to flammable insulation. As LED Downlights produce significantly less heat, they are much safer to use in these locations. Remember , check that all your downlights are fire rated and that they have a suitable IP rating when installating in the bathroom.
2021 04 06
read more
How Many Led Downlights Do I Need to Install for a Great Lighting?
You may use just one downlight if you want to highlight an object or a particular point in your room, but when you want to adequately light up your room, you need to use many downlights. The problem is to assess how many do you need! Well, there is no straight answer to that question. It depends on the size of the room and the activity to be performed therein. For instance, you'll need more lighting in kitchen as you'll be doing your cooking there, but you may not like as much light in your living room, where you might want to create a relaxed ambience. Moreover, it is also a matter of personal tastes and preferences. When you want to have ambient lighting, you should ensure to space your downlight uniformly to get grid like outline, considering the general profile of the room. You should focus on having a uniform distribution of light, in order to avoid creating shadows. Before you get started with the installation, you have to locate joists in the ceiling of the room. Having done that, you may proceed with the marking of positions where the fittings will be fixed. Keep a distance of about eight centimeters from the wall, to put off too much of light from striking against the walls, which can create undesired washing effect. You may have to increase this distance, depending on the positioning and design of furniture contained in the room. For instance, cupboards hanging on the walls of your kitchen could obstruct light and cause unnecessary shadows. The gap between two downlights is dependent on the dimensions of your fitting. Fittings having a diameter of four inches should have space of nearly four feet all round. Likewise, fittings with a diameter of five inches should have free space measuring five feet all around. You will understand that a reduction of space between any two light fittings will increase the intensity of light in your room, whereas on increasing that gap, you can create a softening effect. When including extra fittings, you can generally make up for reduced brilliance offered by smaller downlights. Otherwise, you may use a dimmer switch to easily increase or decrease the intensity of light emitted by LED downlights. However, when you want to have this kind of control over your lighting with a dimmer, you should use a Low Load Trailing Edge Dimmer Switch. Apart from having an all-purpose ambience, you can also use LED downlights for highlighting any specific area of any room. For best results, use eye-ball downlights, also known as gimbals. You have to define the area in the room that you would like to highlight, and accordingly arrange your fixtures. For instance, when the room has plenty of wall art on one of its walls, it will be appropriate to bring your downlight closer to the walls containing the exhibits you want to highlight. When you want to powerfully illuminate any area, you should try grouping your fitting together over that area.
2021 04 06
read more
Green Earth is continuously approaching different markets in various ways, we will keep on researching and designing innovative products, bring a better light to human beings. 
QUICK LINK
CONTACT US

Contact person : Pei Yin

E-mail:  yinpei@green-earth.cn

Phone : +86 13823531612

ADDRESS
5-7F, Block 1, Industrial Park 29, Makan Village, Xili Town, Nanshan District, Shenzhen,China. 518055

Copyright © 2021 GREENEARTH  |  Sitemap