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Dark-field lighting and light hoods

planistar dark-field lighting systems offer a dark field over a much larger measuring area than other manufacturers. The oblique incidence of light allows edges, scratches, embossings, depressions and raised parts to be displayed more clearly. The optical features in the surface appear much brighter than level surfaces and are better visible, thanks to our dark-field lighting.

We are pleased to offer you custom dimensions from our in-house production
(simply enquire under sales@no-spam.planistar.de or Tel. +49 (0) 9364 8060-0).

Typical applications of a dark-field luminaire / light hood in industrial image processing

For incident light applications on glossy or textured surfaces.

Our LED dark-field luminaires are also used for visual inspection tasks. There are other selection criteria to consider in this area, for which we would be happy to advise you.

Overview of our luminaire groups

Our dark-field luminaires are available both individually and as a light hood package. The internal microprocessor technology offers various control options for continuous and flash mode.

Xled-3-SL

LED dark-field luminaire for continuous and flash mode

The single dark-field luminaire can create a dark field from one side. Depending on requirements, a second luminaire can be mounted opposite or attached to the first luminaire at an angle of 90°. It must be set appropriately depending on the test piece and the flaw to be detected.

Order codeMeasuring areaBrightnessPriceData sheetDrawing
Basic luminairemmlx at distance€ / piece.pdf.pdf.step
30-Xled-3-SL-46w300 x 10025.000 /   95.000 at 15 cm619,00PDFPDFSTEP
40-Xled-3-SL-46w400 x 10050.000 / 185.000 at 15 cm703,00PDFPDFSTEP
Possible light colours-46w (white), -47r (red)

All prices plus VAT + freight and packaging.

More information and accessories can be found in the complete catalogue.

4xXled-3-SL

LED light hood for continuous and flash mode

Our light hood consists of 4 dark-field luminaires mounted together to form a unit. A relatively large area is illuminated very evenly and without shadows. The LED light hoods were originally developed for wafer inspection of solar modules. The individual fields of the light hood can be switched/flashed one after the other, which adds the individual dark field images for industrial image processing.

Order codeMeasuring areaBrightnessPriceData sheetDrawing
Basic luminairemmlx at distance€ / piece.pdf.pdf.step
4x30-Xled-3-SL-46w + 1x-W5200 x 20035.000 / 130.000 at 5 cm2124,00PDFPDFSTEP
4x40-Xled-3-SL-46w + 1x-W5300 x 30040.000 / 150.000 at 10 cm2412,00PDFPDFSTEP
Possible light colours-46w (white), -47r (red)

All prices plus VAT + freight and packaging.

More information and accessories can be found in the complete catalogue.

Patented technology from planistar

A highly specular reflector in conjunction with a special diffusing lens directs the light of the LED indirectly onto the measuring field.

Thanks to this design, no reflections of the individual LEDs are imaged on a glossy test object. For detection in industrial image processing, visual defects in the surface are therefore easy to detect.

This technology is also used by planistar in special glare-free workplace lighting. The inspector is able to see structures on shiny surfaces (scratches, surface irregularities) without being dazzled by the luminaire.

Very uniform illumination of the light hood

Our light hood was originally developed by planistar especially for the inspection of solar wafers. It is characterised by a very uniform illumination on the measuring surface. Now this technology is used wherever shiny surfaces have to be inspected.

Fast response time with pulse/pause monitoring

The integrated microprocessor monitors the pulse/pause duration during the flash. The input signals from the customer are measured and a new signal is only released after 5 times the pause duration has elapsed. Due to the short response time from signal input to light activation, a cycle time of up to 5000 Hz is possible.

„Only 12 µs response time“
„Active pulse/pause monitoring“

Any questions?

We would be pleased to advise you about our special dark field system. With experience and an eye for detail, we will find the right dark-field lighting for you and your requirements. The lengths are often adapted to your requirements and the conditions on site.

Points of contact:

+49 (0) 9364 8060-0sales@no-spam.planistar.deComplete catalogue

We develop tailor-made solutions for you. Fast, inexpensive and individual.

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