Light spectrum

Why is it important to calculate beam spread accurately? Accurate calculation of beam spread is essential for efficient lighting design. It ensures that light is distributed evenly across an area, avoiding dark spots and glare, which can be uncomfortable or hazardous.

Far infrared (FIR) or long wave refers to a specific range within the infrared spectrum of electromagnetic radiation. It encompasses radiation with wavelengths ranging from 15 μm (micrometers) to 1 mm, which corresponds to a frequency range of approximately 20 THz to 300 GHz. This places far infrared radiation within the CIE IR-B and IR-C bands.[1] The longer wavelengths of the FIR spectrum overlap with a range known as terahertz radiation.[2] Different sources may use different boundaries to define the far infrared range. For instance, astronomers often define it as wavelengths between 25 μm and 350 μm.[3] Infrared photons possess significantly lower energy than photons in the visible light spectrum, with tens to hundreds of times less energy.[4]

Infrared wavelength

Can beam spread be adjusted after installation? Yes, beam spread can often be adjusted after installation, depending on the type of lighting fixture used. Many modern fixtures come with adjustable optics or lenses that allow for changes in beam spread to adapt to different lighting needs.

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Infraredlight

How does the angle of a beam affect its spread? The angle of the beam significantly influences its spread; a larger angle results in a wider beam spread. This means that the light covers a broader area but with reduced intensity at any given point compared to a narrower beam.

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What is beam spread in lighting design? Beam spread refers to the width of light emitted from a source, measured at the point where the intensity of the beam falls to 50% of its maximum. It’s crucial in lighting design for determining how well an area will be illuminated.

Mid infrared

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Many sources create UV light. Some examples include the sun, or any star, which emits light in all parts of the EM spectrum, black lights, and UV sterilization ...

Near-infrared wavelength

Certain human proximity sensors utilize passive infrared sensing within the far infrared wavelength range to detect the presence of stationary[5] and/or moving human bodies.[6]

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Certain heating pads have been marketed to provide "far infrared" therapy, which is claimed to offer deeper penetration.[citation needed] However, the infrared radiation emitted by an object is determined by its temperature. Therefore, all heating pads emit the same type of infrared radiation if they are at the same temperature. Higher temperatures will result in greater infrared radiation, but caution must be exercised to avoid burns.

2021915 — Three different "colors" used for optical fiber links, although they're all colors of IR. All three have been in use pretty much since the dawn of fiber optics ...

infrared中文

Objects within a temperature range of approximately 5 K to 340 K emit radiation in the far infrared range as a result of black-body radiation, in accordance with Wien's displacement law. This characteristic is utilized in the observation of interstellar gases, which are frequently associated with the formation of new stars.

Researchers have observed that among all forms of radiant heat, only far-infrared radiation transfers energy solely in the form of heat that can be sensed by the human body.[12] They have found that this type of radiant heat can penetrate the skin up to a depth of approximately 1.5 inches (3.8 cm). In the field of biomedicine, experiments have been conducted using fabrics woven with FIR-emitting ceramics embedded in their fibers. These studies have indicated a potential delay in the onset of fatigue induced by muscle contractions in participants.[13] The researchers have suggested that the emission of far-infrared radiation by these ceramics (referred to as cFIR) could facilitate cellular repair.

To calculate Beam Spread, multiply the distance to the surface by 2, then multiply by the tangent of half the beam angle.

The brightness observed in far infrared images of the center of the Milky Way galaxy arises from the high density of stars in that region, which heats the surrounding dust and induces radiation emission in the far infrared spectrum. Excluding the center of the Milky Way galaxy, the galaxy M82 is the most prominent far-infrared object in the sky, with its central region emitting amounts of far infrared light equivalent to the combined emissions of all the stars in the Milky Way. As of 29 May 2012[update], the source responsible for heating the dust at the center of M82 remains unknown.[3]

Infrared heating (IR) is a method of heating an area through more efficient results than gas or electric convection heating. Studies show IR heats faster, more uniformly, and more efficiently than a traditional conventional system.[7][8] Increasingly, IR heating is utilised as part of scheme designs to achieve spot, zonal and smart heating within occupation zones within a building.[7] Though multiple applications of long wave or FIR heating exist, a common representation comprises radiant panel heaters. Radiant panel heaters typically contain a grid of resistance wire or ribbons which are sandwiched between a thin plate of electrical insulation on an emitting die and thermal insulation on the back side.[9] Owing to their size and flexibility,[10] infrared panel heaters can be fitted on walls and ceilings for added-space saving benefits. Electric FIR panel heaters are shown to have up to 98.5% efficiency from supply to production of heat with satisfactory thermal comfort, thermostatic control, and with low initial investment.[11]

In photography absorbing boards, or matt black card sheets, are used to dampen the light in the region of a photographic subject. As the black surface does not ...

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Light sheet fluorescence microscopy (LSFM) is a fluorescence microscopy technique with an intermediate-to-high optical resolution, but good optical ...

Enter the distance to the surface (in) and the angle of the beam (radians) into the Calculator. The calculator will evaluate the Beam Spread.