BN532 - Narrow Green Bandpass Filter - narrow bandpass filter

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Update your foyer by hanging one in a unique shape over a console table. Then, step up the display with a glazed bud vase and table lamp.

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Wavelength quantifies the periods of oscillating currents of the electric and magnetic fields of the radiation (i.e., waves), and measured by frequency, which are the number of complete wave sets passing through a point at a certain time—typically measured as waves per second, or hertz. Whereas frequency can be thought of as the number of waves per unit time, wavenumber is the number of waves per unit distance, typically inverse centimeters (cm-1). Inverse cm is a wonderful way to measure light–the higher the wavelength, the greater the energy.

Farir

As you gather around with friends and family this holiday season, we at Thermo Fisher Scientific hope you will give a moment to reflect on one of most useful techniques in material science and quality control: spectroscopy. Besides lab instruments or portable analyzers, spectrometers can be found in many different places. Want to know how much sugar is in a single M&M candy? Use a spectrometer with diffuse reflection. Want to know what elements a star emits? Use a telescopic spectrometer. Want to label all the colors in Mom’s ugly sweater? Use your eyes! That’s right, your own eyesight is a spectrometer.

The range of infrared region is 12800 ~ 10 cm-1 and can be divided into near-infrared region (12800 ~ 4000 cm-1), mid-infrared region (4000 ~ 200 cm-1) and far-infrared region (50 ~ 1000 cm-1). In infrared spectroscopy, samples exposed to infrared radiation selectively absorb radiation of specific wavelengths, causing a change of dipole moment (separation of positive and negative charges) of sample molecules. Consequently, the vibrational energy levels of sample molecules transfer from ground state to excited state. The frequency of the absorption peak is determined by the vibrational energy gap. The number of absorption peaks is related to the number of vibrational modes of the molecule. The intensity of absorption peaks is related to the change of dipole moment and the possibility of the transition of energy levels. Therefore, by analyzing the infrared spectrum, one can readily obtain abundant structure information of a molecule.

Mid infrared

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Infrared light is one of the most useful forms of electromagnetic radiation. Where there is insufficient visible light, infrared enables night vision and low light devices for cameras. Infrared signals are used in certain types of data communication including television remote controls. IR radiation is used for heating in both industrial and consumer processes. In addition to night vision goggles, IR radiation has several uses in military devices for missile guidance, homing and heat seeking.

Electromagnetic radiation can be described in terms of a stream of particles with no electrical charge, called photons. They travel in a wave-like pattern at the speed of light. Each photon contains a certain amount of energy. The different types of radiation are defined by the amount of energy found in the photons, starting with radio waves with low energies. Microwave photons have a little more energy, infrared photons have still more, then visible, ultraviolet, X-rays, and, the most energetic of all, gamma-rays.

On Tuesday, December 17, 2019 at 11 am EST (4 pm GMT) we present an informative, but informal discussion asking a few questions about infrared spectroscopy, like if Rudolf’s red nose shines bright infrared radiation, what would Rudolf see? Infrared radiation sits in the middle of the electromagnetic spectrum. But what is infrared radiation and what exactly is the electromagnetic continuum? We shall explain.

Most of the earth’s heat comes from the absorption of infrared radiation. (Visible light is not absorbed or heated by the atmosphere.) Greenhouse gases, including water vapor, carbon dioxide, and methane, absorb and emit radiant energy within the thermal infrared range to maintain the Earth’s temperature. The balance between absorbed and emitted infrared radiation can affect the overall global temperature and climate.

infrared radiation中文

A photon’s energy is equal to its frequency multiplied by an important number— the Planck constant. This number is the minimum amount of an electromagnetic action, known as quantum. Or put another way: the minimal element of the energy of the electromagnetic wave itself, which is energy multiplied by time. This number describes the behavior of particles and waves on the atomic scale, including the particle aspect of light. It is the fundamental number is quantum mechanics and has led to our understanding of atomic structures and the energies of each element that is so useful in spectroscopies.

Analyze Better DataBecause using inspection windows does not increase risk of electrical hazards, inspections can be performed during peak load, when data collection is ideal, without worry of accidental process interruption.

Frequency and wavelength are inversely related. Electromagnetic waves with higher frequencies, X-rays and gamma-rays, have shorter wavelengths. Consequently, electromagnetic waves like radio waves and microwaves have lower frequencies and longer wavelengths. Each portion of the electromagnetic spectrum has its special purposes. For humans, the most purposeful portion of this spectrum is light.

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Infrared spectroscopy

An infrared spectrometer detects photons that are transmitted or absorbed when a sample is excited with infrared light. Understanding the spectral pattern of peaks at various wavenumbers allows us to determine the molecular composition of the sample. Somewhat similar to an infrared spectrometer, our eyes are instruments that sort the wavelengths of visible light in order to identify color.

Photons are elementary particles, meaning that they are the smallest piece of light possible. In physics, energy is the property that is transferred to an object in order to perform work, such as creating heat. Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object’s position in gravitational, electric or magnetic forces, the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy of an object’s temperature.

Data Quality: Industry best-practices and standards (including NFPA 70B) note that IR scans must be performed when conductors are fully loaded (or as close as possible). Yet on inspection day(s) it is quite common that at least some percentage of equipment is unloaded or lightly loaded. Consequently, data is gathered and analyzed under conditions that could easily yield false-negative results. The ease, safety and speed of inspecting through an IR window means that thermographers can schedule inspections on days and hours when equipment is "running all out" – the best time to gather data.

Easily comply with OSHA, NFPA 70E, CSA Z462 and similar electrical safety mandates by using closed-panel inspection methods. Infrared (IR) Windows allow workers to perform IR inspections of electrical components while keeping energized electrical equipment closed, and in "normal operating condition."Closed-panel inspections eliminate inherently high-risk tasks, such as removing panels or opening hinged doors, making IR inspections safer for personnel, plant assets and processes.

Compliance: Comply with insurance mandates to perform annual infrared inspections, while also complying with the regulations imposed by NFPA 70E and CSA Z462. The de-risked work process of using an IR Window eliminates the high-risk tasks (opening the enclosures) associated with typical infrared inspections. As a result elevated levels of PPE are not required, and complying with the standards is automatic.

near-infraredwavelength

POLARIZATION meaning: 1. the act of dividing something, especially something that contains different people or opinions…. Learn more.

When it comes to durability and brute strength, ExiscanTM is without peers. See it for yourself, contact your local Distributor.

Are you focused on worker safety, process improvement, operational efficiency, data improvement, cost control or all of the above? Exiscan™ would be honored to help you achieve your condition monitoring goals.

Another factor to consider is that open-panel inspections, by their nature, introduce the possibility of many variables for reflected energy (off highly reflective metallic components. Less experienced thermographers could easily misinterpret theses these reflections from hot or cold elements in the background, resulting in false-positive and false-negative reports. Because the closed doors and panels of the enclosure are a relatively uniform ambient temperature, actual differences in temperature are more easily identified.

Why Polymer? ExiscanTM designed it’s IR windows for the industrial electrical market. With this in mind, traditional laboratory crystals were not an option. After extensive testing and research, we saw that only polymer satisfies the most important demands of the industrial market:

Photometers. Smart Series. Setting the benchmark for measurement performance and value. Learn More. Conometer 80. Fast viewing angle measurements of displays.

Infrared radiation

The commonly used region for infrared spectroscopy is 4000 ~ 400 cm-1 because the absorption radiation of most organic compounds and inorganic ions is within this region. The region between 400 cm-1 and 1500 cm-1 is known as the fingerprint region, so called because it’s difficult to assign all the absorption bands, and because of the unique patterns found there. Absorption bands in the 4000 to 1450 cm-1 region are usually due to stretching vibrations of diatomic units, and this is sometimes called the group frequency region.

Infrared waves

De-Risked Work Process: Open-panel inspections are, by their nature, high risk because they introduce a host of potential variables: stirring dust, agitating a conductor or misplaced tool, scaring a rodent, possibly dropping parts into the enclosure, etc. Infrared windows maintain an enclosed and guarded state (per the standards) and remove the high-risk work tasks, thereby reducing the risk of performing thermography through an IR window. The new closed-panel work task does not expose personnel to energized conductors, and is not a task that could trigger an arc. As such, using an IR window is similar to looking in a visual inspection window {Link visual inspection window to our page for same}, reading a panel meter, or simply walking past the same equipment. Facility managers can take comfort in knowing that the new closed-panel is de-risking their inspection process. No longer does an IR inspection represent a threat of a catastrophic outage.

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Usually when we use the term light we generally mean visible light, but it can also represent ultraviolet and infrared light–whose names actually describe their positions on the electromagnetic spectrum—a number greater than the color violet (ultraviolet) and less than the color red (infrared). Most people can perceive light at roughly 400-700 nm in wavelength (25,000-14,286 cm-1 wavenumber). The infrared range covers 700-1000 nm (wavelength), or 14,286-12,800 cm-1 (wavenumber), and ultraviolet radiation has wavenumbers above these, approximately, 25,000 – 50,000 cm-1, or 100 to 400 nm (wavelength).

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Spectroscopy, spectrometry, and materials science stories and solutions about advancing research and improving product development

XIR Infrared Windows with patent-pending polymer infrared optic is uniquely suited for industrial and facilities maintenance environments: Built like a tank, resilient and warranted for life, accurate and compatible with all models of cameras, big enough to see it all with fewer windows, yet surprisingly affordable.

The Pocket Micro™ 20x-60x LED Lighted Zoom Field Microscope with Aspheric Lens System is a powerful yet easy-to-use pocket microscope with an extremely ...

Magnetism and electricity are different aspects of the same force. Photons have energy proportional to their frequency and two possible polarization states. The electric field surrounding its charge oscillates, generating an oscillating magnetic field. The result is an electromagnetic wave. The speed with which an electromagnetic wave travels is the speed of light.

Inspect the Un-Inspectable: After completing arc flash surveys / incident energy analyses, many facilities discover that some percentage of their equipment has extraordinary incident energy levels (per ANSI/IEEE 1584 or similar calculations). Such equipment receives a "Dangerous" label, and becomes off limits to thermographers. IR windows allow the thermographers to still survey desired targets in "Dangerous equipment" (through the IR window) while equipment remains closed and guarded in compliance with standards like NFPA 70E and CSA Z462.

Divergence Measurement. Beam divergence is defined in the far-field where the beam divergence is constant, but when measuring beam divergence, it's necessary to ...

Ease of Inspection: Imagine the benefits of monitoring hyper-critical applications and "bad actors" more frequently using IR windows. In just a few minutes, without requiring elaborate PPE or work processes, thermographers will troubleshoot and inspect critical electrical equipment through the specially designed IR window optic, thereby eliminating inherently risky and time-consuming tasks. The ease of inspection provides facilities with the latitude to inspect more frequently to ensure maximum facility up time.

Over-Engineered for Your SafetyThe XIR series is built to out-live your enclosure. Our window body and cover are machined from half-inch bar stock aluminum. All other components are stainless steel.

May 16, 2017 — With a MAR coating present, this light is allowed to pass through the lens, making your vision even clearer as more light is transmitted to the ...

ExiscanTM won’t compromise on safety, accuracy or usability. That’s why we over-engineer our design and only use industrial-grade materials - like polymer, aluminum and stainless steel.

In the semiconductor manufacturing process, the antireflection film has three functions. First, it has the function of absorbing the laser light reflected from ...

Access the Inaccessible:How does your facility inspect equipment that can no longer be opened while energized due to that equipment’s voltage or incident energy rating? How does your facility inspect equipment protected by switched interlocks? IR inspection windows allow maintenance engineers to monitor otherwise “inaccessible” equipment.

Radiation from the sun covers all of the electromagnetic spectrum, but mostly infrared, visible and ultraviolet light. Because this radiation is the transfer of energy, it creates heat. Owing to the distance of our planet to the sun and filtering mechanisms in the atmosphere, this radiated heat arrives at an intensity that enables habitation. It also creates photochemical reactions that are essential to life. We know, too, that some radiation can have detrimental effects. While productive to the maintenance of the ozone layer and the synthesis of vitamin D, ultraviolet light directly damages DNA and causes sunburn.

infrared中文

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Human eyesight consists of photoreceptors, which are specialized cells that convert light into electrical signals. When photons reach receptor cells that contain a protein that releases a biochemical energy when excited at a certain wavelength. Rod cells are extremely sensitive to light and are useful for monochromatic vision in the dark. Three cone cells manage color vision. Each cone sends signals to the brain to calculate colors based on the individual photoreceptor and the intensity (count) of photons receives. Shapes are determined by the location of the cell on the retina while lenses determine distance and the iris regulates light intensity—much like chemical imaging in microspectroscopy.

The modulation transfer function (MTF) is a graphical description of the spatial resolution characteristics of an imaging system or its individual components.

Just in time for the 2019 holiday season, we conduct an informative webinar presented by Dr. Mike Bradley. We will answer several burning questions such as:

Please let us know how to contact you, and someone from our team will be in touch quickly. If you have an urgent question or concern please contact us at 585-366-0333.