Flexible light pipes make it easy to add additional indicators or replace a damaged assembly because the lens cap at point B can be up to 330 feet from the LED light source at point A. The light pipe and lens need far less room near the panel face than the LED and its circuitry. If a human-factors engineer finds another indicator is necessary and space is an issue, a large redesign can be avoided by adding another indicator with a flexible adapter routed from another LED that may be in a completely different location from the first LED. The coupling of design time and design space radically improve cost concerns in a variety of industries and applications. Five different POF jacket colors improve installation and visual identification in the field by technicians, as well as clarify references in user manuals.

A light pipe design includes more than the LED, pipe, and lens. Additional components are needed to make up a complete system, and there are several options for each one.

L'obiettivo è ottenere le massime prestazioni con un cablaggio rapido ed essenziale. I moduli, compatti e potenti, vengono installati esattamente dove servono. Ciò riduce i tempi di installazione e garantisce la massima disponibilità di sistema grazie alla diagnostica a LED su ciascun modulo. Ne consegue che i componenti da interno quadro, solitamente utilizzati per il collegamento delle telecamere, vengono sostituiti da sistemi di installazione decentralizzati.

L'elaborazione industriale delle immagini può migliorare di molto l'efficienza in diversi settori. I sistemi di visione sostituiscono un gran numero di sensori e sono la base per aumentare al massimo il grado di automazione di numerosi processi.

Murrelektronik ha sviluppato soluzioni di sistema efficienti ed economiche per l'integrazione plug and play dei sistemi di elaborazione industriale delle immagini.

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Serve di più? Più tensione? Più componenti? Per applicazioni che necessitano di maggiore alimentazione, Murrelektronik propone il distributore di potenza NEC Class 2. Molto utilizzato per alimentare sistemi di illuminazione, questo modulo presenta quattro porte M12 A-code, ciascuna con circuiti NEC Class 2. Il distributore NEC Class 2 è protetto da una custodia in IP67 e alimentato tramite una connessione M12 L-code in cascata. In questo modo può essere installato nella stessa area di uno switch Xelity Hybrid. I segnali di trigger ed encoder presenti sulla connessione M12 L-Code non vengono collegati sulle porte M12 A-Code, dove sono presenti solo 24 V e 0 V per l’alimentazione delle lampade.

A light pipe is a solid transparent plastic rod or an optical fiber used for transmitting light from a board-mounted LED to another location where it can conveniently be viewed, such as an indicator panel of an electronic module.

As part of the expanding infrastructure driving worldwide connectivity, light pipes direct light throughout complex systems: from servers and edge computing, to data centers and 5G system infrastructure.

Light pipes help ensure safety, reliability, and compliance in harsh environments such as those found in industrial operations. Integrated indication and illumination technologies improve manufacturing floor monitoring to safeguard assets from hazardous conditions.

Light loss, or light bleed, occurs when some of the light traveling from Point A to Point B escapes or shines elsewhere, so less light is available to shine at the exit point.

Light bleed occurs when light from the LED can be visible around the LED and light pipe area. Light bleed causes false-readings, muted and blended colors, crosstalk between adjacent light pipes, and unwanted glow in the enclosure. When a rigid light pipe is located over the LED, it allows for a certain amount of light bleed at the base of the light pipe. A flexible light pipe is designed to provide less light bleed with a coated optical fiber and a light resistant black adapter.

Note: there will always be some level of light that gets lost traveling from where the LED is located and the exit point where the end-user sees the light.

A light pipe is placed very closely to an LED light source on one end of a PCB board. Its optical-grade materials help carry the rays of light to the desired destination, typically at the user interface of a device. Light pipes transmit roughly 80 to 90 percent of the light from the LED source, depending on design and spacing. The closer the light pipes are to the LED(s), the more efficiently they can transfer light. Of course, the light pipe(s) used will need to be rated for the same amount of heat that is produced by the LED or light source, so that must be a design consideration as well that can dictate the minimum allowable distance between the light pipe and the light source.

Con le soluzioni di installazione per i sistemi di visione di Murrelektronik, si può iniziare rapidamente e facilmente a godere dei numerosi vantaggi dell'elaborazione industriale delle immagini, contando su un rapido ritorno dell'investimento.

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For clear polycarbonate, the critical angle is 39, and for acrylic, it’s 42. Understanding how the light reacts in different scenarios will lead to better, more optimized light pipe performance. For example, when using a right-angle light pipe, here’s how TIR would affect the specifications:

Murrelektronik propone anche un'ampia gamma di cavi con connettori M8, M12 e RJ45 per installazioni bus di campo. La schermatura a 360° protegge la trasmissione dati da disturbi elettromagnetici.

I connettori di potenza Murrelektronik portano l'alimentazione a macchine e impianti. La scelta è tra il compatto e potente M12 Power, l'MQ15-X-Power con tecnologia di collegamento veloce, o l'M23, la soluzione standard consolidata per la connessione di servo motori.

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Uno dei principali vantaggi è la semplificazione delle procedure di installazione, grazie a moduli decentralizzati e a innesto che possono essere montati direttamente a bordo macchina.

Rigid and flexible light pipes offer you two distinct options. Each one has advantages and disadvantages. Here are some guidelines to help you make the right choice.

Nei sistemi di visione, l'iniettore di segnale di Murrelektronik è la base di ogni collegamento in cascata dell'alimentazione. I segnali di trigger ed encoder che provengono dal Master Breakout Box, vengono trasmessi a questo modulo nello stesso collegamento usato per l'alimentazione in cascata. Fino a 4 linee da 24 V possono essere collegate all'iniettore di segnale e ciascuna linea permette un collegamento in cascata che trasmette anche i segnali di trigger ed encoder.

La nostra offerta comprende connettori preassemblati M8 e M12 e una vasta scelta di connettori per elettrovalvola precablati con cavi della lunghezza desiderata e spesso con LED e protezione integrati. Adattatori, elementi a T e chiavi dinamometriche, per garantire connessioni sempre perfette, completano il portafoglio prodotti.

It is important to pair the LED with an appropriate adapter to minimize light bleed. Bivar offers adapters that are designed to fit over existing LEDs, plus integrated solutions with a built-in SMD or through-hole LED.

Automazione e ottimizzazione significano maggiore efficienza, maggiore produttività e migliore qualità, meno revisioni e, non meno importante, una maggiore soddisfazione del cliente.

Figure 5 shows the various parts of a flexible light pipe design. The components consist of the LED at point A; a SMD-22 adapter that ensures no light bleeds into an adjacent pipe; a plastic optical fiber (POF); and a lens cap at point B that is bonded to the POF.

L'alimentatore switching Emparro67 di Murrelektronik, potente e robusto, assicura l'alimentazione dove serve, direttamente a bordo macchina.

Overall, rigid light pipes are an economical way to move light from an LED to the indication area on the front panel when direct access is available.

LED intensity. The light output (brightness intensity) of SMD LEDs and through-hole is commonly measured in millicandelas (mcd) or lumens (lm). The higher the mcd or lm rating, the brighter the light intensity.

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A flexible light pipe is preferred when light must be moved over longer distances or around obstacles between the LED and a front panel or other display location. A flexible light pipe assembly consists of an adapter, which provides less to no light bleed, and a flexible optical fiber with a lens cap. Flexible light pipes are immune to electromagnetic interference (EMI) and do not conduct or transfer electrostatic discharge (ESD) pulses.

Lo switch Xelity Hybrid di Murrelektronik garantisce una trasmissione dati senza intoppi a bordo macchina. Grazie a questo switch, si possono collegare e alimentare fino a quattro telecamere via Ethernet.

Light pipes might seem straightforward, but they fulfill a critical role in electronic equipment design; their use can simplify PCB layout, ease the job of the human factors engineer, and allow for a more compact design.

To minimize the amount of light loss, designers can use an LED with a narrow viewing angle instead of one with a wide viewing angle to help close the distance between the light pipe and LED where light could escape. The wider the gap between the light pipe and the LED, the more room for light to escape before it enters the light pipe and travels to the exit point.

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Se necessiti di trasmettere dati, segnali o alimentazione, abbiamo la soluzione giusta per te. La gamma di connettori Murrelektronik offre la massima scelta e assicura qualità di livello superiore. Ogni singolo connettore è testato al 100%!

Murrelektronik propone soluzioni di installazione efficienti ed economiche per i sistemi di visione per garantire un approccio altrettanto efficiente a questa tecnologia ad alta prestazione. In più, le nostre soluzioni in questo campo aiutano a ridurre le dimensioni dell'armadio elettrico.

Scegliere Murrelektronik è utile per le più svariate applicazioni nell’ambito di ottimizzazione degli impianti e sistemi di visione:

Rigid light pipes are available in numerous configurations, including straight, right angle, single-unit, or multiple-unit, stacked or vertical arrangements Rigid light pipes with an IP67-rated heavy-duty threaded retention provide maximum protection against liquid and dust incursion. Complete solutions are available that include the light pipe, the LED, and a surface-mount adapter.

Applications in many industries must operate in harsh environments where it is critical that the lens cap appropriately sealed against the elements with the appropriate IP rating. The IP rating of a lens cap indicates the level of protection it provides against the incursion of solids, including dust, and liquids, including moisture or water. An IP rating is expressed in the form “IPXY”, where X and Y are numeric values.

The lens is mounted or molded on the end of the light pipe; it provides a convenient visual indicator and also protects the light pipe from mechanical disturbance. Some lens parameters are:

The first digit in an IP rating indicates the level of ingress protection against solid objects: from IP0x (no protection) to IP6x (complete protection against dust). The second digit refers to protection from liquids: from IPx0 (no protection) to IPx9 (protection against water jets).

LED color. SMD LEDs and through-hole are available in a wide range of single colors. SMD LEDs have additional options, including white or single, bi-color and tri-color, in an array of color configurations. Light pipe adapters are available for use with both types of LEDs. In addition, the designer can choose an adapter with a built-in LED or one intended for use with a separate LED.

A surface mount (SMD) LED is mounted on the surface of the PCB and does not require holes. Through-hole LEDs are mounted by inserting leads through the PCB and soldering to provide a stronger connection between layers, which also can withstand some environmental stress conditions. An SMD LED tends to be smaller and brighter than the through-hole equivalent. Both through-hole and SMD LEDs are available in a wide range of sizes, colors, luminosities and lower power wattage.

They offer several benefits, including clean status indication and simpler human factors engineering. The non-conductive light path requires no solder or crimped terminations and eliminates the potential of electrical shorts due to pinched wires; no solder or crimp terminations are needed.

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Refraction is defined as the change in direction of a wave from one medium to another or from a gradual change in the medium itself.

Often, light pipes are used to guide light around corners. To help ensure that the light bounces at the critical angle and travels to the endpoint with maximum effectiveness, understanding the critical angle of various materials is essential.

This article will discuss the function of light pipes, the technology behind them, the underlying physics, and the choices and options available to the equipment designer.

The design engineer must pay close attention to the pairing of the light pipe and the LED to minimize light loss and ensure best performance. The LED must be effectively matched to the entrance of the light pipe to allow for proper light capture with minimal light loss.

Flexible light pipes are more complex and cost more than rigid light pipes; they solve accessibility challenges for engineers by giving them the flexibility to bypass components on the printed circuit board (PCB) that prevent a straight-line access to the indication area on the front panel.

Lens color. Diffused, smoked, and color (blue, black, green, gray, red, yellow) lens options are available, depending on model.

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Light pipes are critical components in many modern electronics applications. Adding a light pipe is a cost-effective solution to help eliminate many of the steps otherwise required to transport light from one place to another.

Il componente centrale di ogni applicazione di visione è il Master Breakout Box di Murrelektronik, uno sdoppiatore che raccoglie e distribuisce una varietà di segnali lungo il sistema. La combinazione di importanti funzioni all'interno di questo modulo porta molti vantaggi: semplificazione del cablaggio, velocità di installazione, diagnostica a LED e ottimizzazione degli spazi nel quadro elettrico.

In healthcare, LED Indication and Illumination solutions enable crucial Human Machine Interface (HMI) designs in a range of medical technology applications.

Light pipes enable reliable operation in the harshest of conditions. Water, extreme temperatures, and vibration demand that product designs conform to strict regulatory ISO guidelines.

Of course, light pipe position can impact the light properties. To minimize light loss, a general rule is to use an LED with a narrow viewing angle of 160 degrees or less and position the light pipe and LED no more than 0.05” apart. There’s a little more to it than that to get the best product for your design. That’s where light simulations come in. Contact our team to run a simulation and determine the ideal light pipe for your design. And, don’t forget the constraints you may have based on the type of light pipe you use: Rigid light pipe design constraints Can’t bend Length limits: Press fit: 1.20” Custom: 1.5” Standard: up to 2” with shorter versions available Flexible light pipe design constraints Bends up to 30 degrees

Lens size and shape. A variety of lens sizes is available, including diameters of 2mm, 3mm, 4mm and 5mm. Round, oval, and rectangular shapes are available.

This number represents how much of the light is bent or refracted when it hits the medium. It also calculates how much light is reflected when reaching the medium.

There are various mounting options for light pipes depending on your application and manufacturing requirements. If flexible and rigid were the only options, your options might be limited. Light pipes are designed to accommodate a wide range of mounting types. In addition to the rigid vs. flexible decision, there are several other considerations when choosing a light pipe for your design. Your power source and overall design footprint can dictate which mounting type you should use with your light pipe.

The maximum flexibility occurs when the designer can choose between designing with individual components (LED and light pipe) or using a complete solution that includes both elements.

Because light has unique properties, designing a light pipe like the right-angle illustration shown above will result in significant light loss at the TIR. To avoid light loss, incorporate the critical angle to create a geometry to guide the light around the critical angle without having the light escape. This concept also applies to light pipes with round corners (or any geometry your design includes).

Light pipes support the LED Indication and Illumination requirements of this rapidly expanding market that encompasses electric vehicles and their charging infrastructure, as well as non-automotive transportation.

Lens profile. A Fresnel lens is designed to focus light and provides reduced shadowing and glare, and a wide viewing angle. A simple flat lens profile or dome lens is also used for increased viewing angle.

There’s also total internal reflection (TIR), which is the angle at which light is reflected when none of it shines through to a surface exit, instead it is reflected from one surface to another where it is visible.

So, in addition to all the other variables that go into light pipe design (size, shape, brightness, distance to LED, viewing angle, and material used, to name a few), designers must also consider the Refractive Index.

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In a vacuum, light breaks at a rate of 1.0. But no one designs light pipes to be used in this type of vacuum, so additional consideration must be given to optimize performance.

Depending on the equipment and the design of the user interface of a device, a product can require more than one — and up to many — indicators. For designs that require multiple indicators, light pipes are an ideal solution due to their low cost, excellent visual communication and design flexibility.

LED size. Surface mount LED are based on industry standard sizes and through-hole LEDs are sized in millimeters (1.8mm, 3mm, 5mm). For example, an 0402 package (SM0402) is based on approximate dimensions (length × width) at roughly 0.4mm long by 0.2mm wide.

TIR is a phenomenon that occurs when the angle of incidence is greater than a certain limiting angle, referred to as the critical angle.

Completa il modulo seguente con i tuoi dati per ricevere il white paper "Soluzioni di installazione per sistemi di visione" per e-mail.

A rigid light pipe is designed to carry light shorter distances in moderate to high vibration conditions and in damp or dusty environments. Rigid light pipes are available in many configurations including vertical, right angle and multi-levels and are designed for distances up to 3 inches. A rigid light pipe is constructed from polycarbonate.