Remember that if containers break, you have to shut down your filler. That means a lot of downtime instead of production. There’s also a material amount of risk because you have to make sure none of the broken containers got into the product.

Nell'affascinante mondo dell'ottica, calcolare l'apertura numerica (NA) è fondamentale per determinare la capacità di una lente di raccogliere la luce e risolvere i dettagli fini del campione a una distanza fissa dell'oggetto. In sostanza, la NA è un numero adimensionale che caratterizza l'intervallo di angoli su cui il sistema può accettare o emettere luce. È definito dalla formula:

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The challenge with that sophistication is that those machines are fairly intensive to operate. If you visit a beer plant, you probably noticed that beer lines are generally configured to run one type of container. That means it’s more straightforward from the operational standpoint to run an EBI on this type of container – more than in the food industry, where you might run many products on one line and must do constant product changeover.

EBIs were originally created to solve the returnable beer bottle problem. Imagine you get a beer bottle back from a customer: you want to make sure the beer bottle is empty, that there’s nothing in it, that there is no damage from use. The beer industry has been using EBIs for a good while, and over time it’s become more sophisticated to match the broad sense of issues.

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When you combine these two machines, you get the benefit of up-front operational efficiency. And on the backend, you’re getting 100% assurance that your product is foreign material free. With our systems, we can guarantee that:

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Until recently, X-ray systems have been focused on full container inspection. But Empty Container Inspection is very viable, especially when X-ray-based. The X-ray makes the process simple. And if you’re already using an X-ray system at the end of your line, the good news is you already know how to use an X-ray on the front-end.

Immagina di utilizzare un microscopio con una lente che ha un indice di rifrazione di 1,52 (comune per le lenti a immersione in olio) e un semiangolo massimo di 70°. Inserendo questi valori nella nostra formula:

If you’re working in food and beverage, you’re probably familiar with something called “EBI”, or “Empty Bottle Inspection”. The theory of these is very simple: most food and beverage operators want to inspect the integrity and quality of their glass container before filling it with expensive product – and potentially having it break, or finding a defect that makes it unsuitable to sell. EBIs have been around for about 30 years and their primary job is to do a sophisticated inspection of this kind of container.

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Più alta è l'apertura numerica, maggiore è il potere di risoluzione del microscopio. Ciò significa che può distinguere tra due punti molto vicini tra loro, fornendo immagini più dettagliate.

The good news is that X-ray systems are great for solving these problems. At Peco InspX, we’re focused on delivering X-ray-based EBI for one-way glass. These systems are simple to operate, there’s no container handling, there’s nothing that spins the bottle – it’s a simple, straightforward capability. From a food operator standpoint, our machines will find those defects. We’re able to get containers that would break on the line out of the feed stream.

L'indice di rifrazione (n) è una misura di quanto la velocità della luce si riduce all'interno di un mezzo rispetto al vuoto. È una quantità senza unità e varia per diversi materiali. Ad esempio, l'indice di rifrazione dell'aria è in genere intorno a 1,0003, mentre per l'acqua è circa 1,33.

In food production, almost all glass is “one way”: there are not many returnable glass containers (for example you can’t return a spaghetti sauce container). That means the problem’s a little simpler because there’s less to worry about. Generally, food producers worry about the same things:

So, generally, EBIs are less prevalent in the food industry. But let’s take a moment to think about when food producers might need the most help with detection, and what might best be helpful.

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What does C/W stand for? ; C/W · Consistent With ; C/W · Coupled With ; C/W · Come With.

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Sì, soprattutto quando si usano oli per immersione con un indice di rifrazione elevato. Ad esempio, molte lenti per immersione in olio hanno NA superiori a 1.

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Assolutamente. L'indice di rifrazione del mezzo tra la lente e l'oggetto influisce in modo significativo sull'apertura numerica. Ad esempio, l'uso dell'immersione in olio (con un indice di rifrazione più elevato) può aumentare l'NA e quindi il potere di risoluzione.

In sintesi, comprendere l'apertura numerica di un sistema di lenti è fondamentale per chiunque lavori nel campo della progettazione ottica, della microscopia o della tecnologia laser. Definendola tramite l'indice di rifrazione e il semiangolo del cono di luce, l'NA fornisce una visione critica della capacità di un sistema di catturare e risolvere la luce, influenzando direttamente la chiarezza e la luminosità dell'immagine catturata.

Il simbolo θ (theta) rappresenta il semiangolo del cono di luce massimo che può entrare o uscire dalla lente. Questo angolo è misurato in gradi (°) o radianti (rad).