How lighting can improve quality control

Working conditions vary. Perhaps you're sitting in a dark room and need a light source to properly see your object.

Or perhaps you’ve already added a ringlight, but now you’re experiencing distracting shadows on your object, which make it difficult to check whatever you’re supposed to check. Well, don’t worry. Here’s a walk-through of the different light options from TAGARNO and how they’ll make all the difference when using a TAGARNO digital microscope.

White ringlight

Okay, this one might be simple, but if you’re sitting in a dark room and you’re not able to see your object clearly, try using a white ringlight. The ring light will cast a white light on your object, making it much easier to see your object. You can of course adjust it to the appropiate intensity with a control box from TAGARNO.

Extra tip #1

Unfortunately, adding a white ringlight isn’t always bullet proof. Sometimes the bright light isn’t focused where you need it – perhaps you’re looking into an indentation or a tube and you need the light to be focused on one specific area – or maybe you’re experiencing the exact opposite – the light isn’t hitting your entire object, leaving some areas in the dark. Then a fresnel lens or diffuser might be your new best friend.

Extra tip #2

But what if the ring light is too bright and creates reflections on your object? Or maybe the light causes your object to cast shadows on your work surface, making it difficult to see the outline of your object? Try using a polarizer set or glass table to eliminate reflections and shadows.

UV ringlight

Okay, so maybe the room lighting is just fine, but you're looking at transparent or clear materials that aren't visible to the naked eye, such as conformal coating material. The coating material is a thin polymeric film, which conforms to the contours of a printed circuit board to protect the components of the board from moisture, dust, chemicals and temperature extremes. Using a UV ringlight enables you to easily check whether components are well protected or not by making areas lacking coating clearly visible.

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Coaxial light

But what if you’re working with a smooth and reflective surface? Then a coaxial light will be the option for you. The coaxial light will be transmitted from the side of a box onto a halfway mirror. The mirror then reflects the light onto the object. This results in a shadow-free picture without reflections.

This light option is excellent for scratch detection of highly reflective or glossy surface products such as metal processed parts or glass. It can also be used for engraved character detection of metal surfaces.




The final light option provided by TAGARNO is a backlight. It’s the ideal choice when you want your object illuminated from below. You can either use the backlight on its own or in combination with the white ringlight for high intensity illumination. Similarly to the other light sources mentioned here, you can of course regulate the intensity of the backlight using a TAGARNO control box.

CONTACT Get in touch
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If you have questions or want a quote, please do not hesitate to contact us and we will get back to you as soon as possible:

Talk to the team

You are also welcome to contact a person from the TAGARNO sales team directly

TAGARNO USA Country Manager, Jake Kurth
Jake Kurth Country Manager Americas
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