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By directing the light towards a wall or other surface, you can create a soft and diffused glow that adds depth and dimension to your outdoor area. To achieve the best results, it's important to position the lights at the right distance and angle. By placing the light fixture a few feet away from the wall and aiming it sideways, you can create a beautiful, even light that illuminates the surrounding area without overpowering it. This technique is also ideal for highlighting specific features of your outdoor space, such as trees, a beautiful garden wall or a unique architectural element. See more technique of positioning of spot lights.

There are several benefits that make them a great choice. Firstly, they are energy-efficient and use less electricity, which can lead to significant savings on your electricity bills. Additionally, they require lower maintenance compared to traditional lighting options, which also helps save money in the long run. Another advantage of flood lights is their longer life span, which means less frequent replacement and fewer expenses.Moreover, flood lights are not affected by weather or temperature fluctuations, which makes them a reliable lighting option for outdoor use. LED flood lights, in particular, are the safest alternative as they do not produce heat. Spot lights are a versatile lighting option that can be used in a variety of ways to enhance the look and function of your outdoor space. One of the main benefits of spot lights is their ability to highlight specific features, such as a beautiful garden or a unique architectural detail. In addition, spot lights are a great way to improve safety and security by illuminating dark corners or pathways. They are also highly energy-efficient, using a smaller amount of electricity. Spot lights are also easy to install and maintain, with low maintenance costs and a long lifespan. We have a lot of spot lights come in a wide range of styles, from modern to traditional, making it easy to find a design that fits your personal taste and complements the aesthetic of your outdoor space.

Upgrade your outdoor space with wall spot lights that can transform it into a breathtaking spectacle. Proper lighting not only enhances the appearance of your place, but also provides security protection.

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Explore the wealth of information, research and real-world applications we have produced while developing the most cutting-edge solar simulation technology on the planet.

Even though our eyes only perceive the visible portion of the electromagnetic spectrum, other wavelengths produced by the sun (such as UV or IR) also play an important role in many light-sensitive processes. Light-sensitive chemical reactions are also known as photochemical processes, and there are many that humans and all life rely on. For example, depending on the type of chlorophyll, plants wavelengths ranging from the UV to the IR to produce useful energy. Additionally, materials (organic or inorganic) can be designed to absorb light in a broad spectrum of wavelengths even outside of visible light.

Radiant Intensity of a light source is its radiant flux per unit of solid angle. We won’t go into too much detail here because it’s not needed for fully understanding solar simulators.

Luminous flux is measured in a unit called lumens, written as lm. Commercial indoor lights are usually expressed in lumens because regular illumination needs are only concerned with the visible part of the spectrum.

Installing landscape floodlights can enhance the appearance and safety of your outdoor spaces. Follow these steps for a successful installation: Plan the layout: Determine the areas you want to illuminate and the desired lighting effects. Consider the positioning of the floodlights, the angle, and the distance from the objects or areas you want to light up. Make sure to choose floodlights with appropriate wattage and beam angles to cover the intended area. Gather tools and materials: You will need a floodlight fixture, a mounting stake or bracket, an outdoor-rated electrical cable, a junction box, a waterproof wire connector, a screwdriver, a hammer, a shovel, and a power drill (if mounting on a wall or other hard surface). Turn off the power: Before starting the installation, ensure the power is turned off at the main electrical panel to avoid the risk of electric shock. Install the mounting stake or bracket: If using a stake, drive it into the ground using a hammer, making sure it's stable and secure. If using a bracket, drill holes and secure the bracket to the surface (e.g., wall, fence, or post) using appropriate screws or bolts. Attach the floodlight fixture: Mount the floodlight to the stake or bracket following the manual instructions. Ensure it's firmly attached and can be adjusted to the desired angle. Run the electrical cable: Dig a trench (6-12 inches deep) from the power source to the floodlight location. Lay the outdoor-rated electrical cable in the trench, leaving some slack near the floodlight for connection. Connect the floodlight: Use a waterproof wire connector to join the wires from the floodlight fixture to the electrical cable. Follow the manufacturer's instructions for proper wire connections (usually color-coded). Install a junction box: If necessary, install a junction box near the power source, following local electrical codes. Connect the electrical cable from the floodlight to the junction box. Connect to the power source: After completing all connections, restore power to the circuit and test the floodlight to ensure it's functioning correctly. Adjust the angle and direction of the beam as needed. Fill the trench and clean up: Once everything is working properly, backfill the trench and conceal the electrical cable. Clean up the area, and your landscape floodlight installation is complete. Note: If you're uncomfortable or inexperienced with electrical work, contact us or hire a licensed electrician to handle the electrical connections and ensure a safe installation.

Product innovation has always been a critical driver of LeonLite®'s business. In a highly competitive industry, we constantly strive to develop new products that offer homeowners unique advantages in terms of style, installation, and energy efficiency.

Like radiant flux, luminous flux is the emitted optical energy per unit of time. However, luminous flux is weighted by the sensitivity of the human eye, which varies as a function of wavelength. The human eye’s response is usually separated into two categories: photopic and scotopic vision. Photopic vision is the eye’s response under well-lit conditions (mediated by cone cells), whereas scotopic vision is the eye’s response under low-light conditions (mediated by rod cells). Luminous flux specifically accounts for the photopic response of the human eye. The curves that describe the human eye response are usually called luminosity functions.

As far as the solar industry is concerned, radiometric units are preferred (for example, radiant flux in W/m2 instead of luminosity in lumens).

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Illuminance is the photometric analogy to irradiance. In other words, it is the visible light power per unit area. It has units of lumens per square meter (lm/m2), also known as lux (lx).

The photopic luminosity curve of the human eye has a peak at a wavelength of 555 nm. The curve is usually normalized to that point, and we define 683 as the number of lumens per watt at 555 nm. The fall-off in the human eye’s efficiency is described by this function, where lambda is given in units of micrometers (or microns):

As we discussed earlier, though, the unit of lumens is a photometric one, which only considers wavelengths of light visible by the human eye. So, this measure is really missing out on a lot of the radiation the sun is actually emitting.

The main difference between spotlights and floodlights lies in their beam width and applications. Spotlights produce a narrow, focused beam of light, typically no more than 45 degrees wide, ideal for accentuating specific elements like artwork, architectural features, or landscape elements.Floodlights, on the other hand, cast a wider beam, up to 120 degrees, making them perfect for illuminating larger spaces such as driveways, stages, or parking lots with even light coverage.To determine the width of a light beam at a specific distance, use the formula: Beam Angle x 0.018 x Distance from Light Bulb = Beam Width. For example, an 80-degree floodlight placed 10 feet away will have a beam width of 14.4 feet (80 x 0.018 x 10). Similarly, a 30-degree spotlight positioned 15 feet away will produce a beam width of 8.1 feet (30 x 0.018 x 15).

We provide an extensive range of colors and styles for your spot lights. Additionally, we offer free shipping on orders over $35, and 30-day returns, making it simple for you to find the perfect in-stock spot light LED for home without any inconvenience.

With our extensive collection of wall spot lights and outdoor LED spot lights, you can transform your outdoor area. You can choose from a variety of colors and styles among our LED spot lights outdoors to discover the ideal match for your design tastes. Purchasing our uplights is easy and convenient, with a 30-day return policy and free shipping on purchases.

Do you need help or have any questions? Reach out to Leonlite's professionals. With our premium LED spot lights outdoor, which are made for both protection and beauty, you can turn your outdoor space into a breathtaking haven. Get the greatest outdoor lighting solutions by shopping at LeonLite right now.

One of the uses of radiance is that, because it takes distance into account through the calculation of solid angle, radiance itself doesn’t depend on distance. So you can go to other planets in the solar system and the Sun will have a different irradiance, but still have the same radiance.

For non-monochromatic sources, i.e. those sources that consist of more than a single wavelength of light, the calculation is more involved. In this case, we need to know the Spectral flux as a function of wavelength for our source (in units of W/nm). We then need to integrate (broadly speaking, sum up) the contributions over the full visible wavelength range, considering the change in photopic response at each wavelength. Mathematically this is written as

Luminance is the photometric analogy to radiance. In other words, it is the visible light power per unit area per unit solid angle. It has units of lumens per square meter per steradian (lm/m2/sr).

The luminous intensity of a source is the luminous flux per unit solid angle (remember, solid angles are a bit like two-dimensional angles). This quantity accounts for directional variances in light.

There are some online calculators to convert between lumens and watts, but most of these, if they don’t mention wavelength, are trying to convert brightness of an LED in lumens into the equivalent brightness of an incandescent light bulb.

Before anyone can start reproducing sunlight, they have to have a way of measuring and talking about it. There are two main methods of counting and quantifying light, known as radiometry and photometry.

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Radiant flux is the light energy per unit time which is emitted, transmitted reflected or received by an object. It has units of Watts (W, or Joules of energy per second, J/s). It is also sometimes called radiant power or optical power. Because this unit of measurement doesn’t depend on wavelength, it can be used to measure any kind of electromagnetic radiation.

Choosing wall wash lights, spotlights, and floodlights over recessed soffit lighting can offer several advantages for various lighting needs:

Sometimes irradiance is also referred to as intensity or optical intensity, but this naming should be avoided because it’s too easy to confuse with radiant intensity.

We provide an extensive range of colors and styles for your spot lights. Additionally, we offer free shipping on orders over $35, and 30-day returns, making it simple for you to find the perfect in-stock spot lights without any inconvenience.

Radiometry measures light of any wavelength, so comprises the most broadly-applicable measurement units when talking about the entire electromagnetic spectrum.

Radiance is defined as irradiance per unit of solid angle. If you’re not familiar with solid angle, you can think of it as a two-dimensional angle. A rough way to distinguish this from irradiance is that irradiance describes the power striking a specific surface from all angles, whereas the radiance describes the power striking a specific surface from a specific angle. It is not nearly as commonly used as irradiance.

For a single-wavelength (i.e. monochromatic) source, the computation is more straightforward. Let’s say we have a 1 mW green laser (at 532 nm).

As mentioned earlier, photometric units of light measurement are concerned with how light is perceived by the human eye, i.e. visible light. It is less useful when talking about measuring sunlight, but because it’s used so often in commercial lighting, it’s worth a brief discussion.

Spectral flux is like the radiant flux, but specific to a wavelength interval. If we want to know how much power is received, transmitted or emitted per wavelength of light, then we talk about spectral flux. This quantity is useful because it tells you how widely spread out your radiant power is over the electromagnetic spectrum. It has units of Watts per nanometer (W/nm). If the radiation is being described in terms of frequency (instead of wavelength), the spectral flux can have units of Watts per Hertz (W/Hz).

For more details on the difference between radiometric and photometric units, and what these units mean, please reference the above sections.

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Irradiance is the radiant flux shining on or received by a specific surface area. In other words, it’s the received power of light per unit area. It has units of Watts per square meter (W/m2) or other variants like mW/cm2 (because most detectors have dimensional areas in the range of cm2 rather than m2).

Radiometry is the science of measuring light of any wavelength, that is, in any portion of the electromagnetic spectrum. Photometry, on the other hand, is only concerned with the measurement of visible light, with a specific view (i.e weighting) toward how strongly or weakly the human eye responds to these wavelengths.

Because the Sun emits visible light as well as many other useful and necessary wavelengths, it makes most sense to use radiometry to measure sunlight.

Wall Wash lights, spot lights, flood lights fixtures do exactly what they sound like they do: they bathe an area with light and have “soft” or "hard" edges on the beam. They are great for evenly lighting up large areas like trees, bushes, walls, or floors.

The key units most often used (and most worth remembering!) are those of radiant flux (W) and irradiance (W/cm2). If you understand these, it’s an easy step to add the extras: spectral flux (W/nm) and spectral irradiance (W/cm2/nm). Knowing these will equip you to fully understand the coming sections.

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As an example, let’s say we have two 1 W light sources. One of them has a spectral flux of 2 W/nm, whereas the other has a spectral flux of 1 W/nm. The first source’s light is twice as concentrated in wavelength space.

The short answer is that the sun has an illuminance of about 100k lux (lumens per square meter) on a perpendicular surface at sea level.

There’s a similar quantity called spectral irradiance, which is the irradiance per unit of wavelength. As with other spectral quantities, it describes the irradiance for a given wavelength interval of the spectrum. When you see a plot of the solar spectrum, it will very often be given in spectral irradiance.

Usually, though, light sources vary in spectral flux depending on the wavelength or color of light, so you’ll see spectral flux plotted as a curve (a function of wavelength).

Similar to spectral flux’s relationship to radiant flux, spectral intensity is the radiant intensity per unit wavelength, and describes the angular dependence of light for a specific wavelength interval.

This is one of most commonly used radiometric units, simply because it’s easy to measure, report and share, for most measurements are made by a detector with a finite area. It’s hard to measure the full power (radiant flux) emitted by a source, but it’s much easier to put a detector of a given area in the path of light and make one measurement.

We’re not talking about that type of conversion here. Instead, we’re talking about how to convert the number of lumens (visible energy per unit time) to the radiant flux (total energy per unit time). For this, we need to know the wavelength range of light involved, as well as the photopic luminosity curve of the human eye.

Our dedication towards being affordable while still producing high-quality products makes Landscape Lighting possible for everyone who wants their home or business property looking its very best.