Luminous surfaces from planistar for uniform and diffuse illumination of your test objects for industrial image processing. Our special edge lighting system provides a very even illumination. Whether for continuous operation or for flash mode, our large selection of toplights includes the right incident lighting for every application.
We offer you custom dimensions from our in-house production
(simply enquire under sales@no-spam.planistar.de or Tel. +49 (0) 9364 8060-0).
Many selection criteria have to be considered, especially for incident lighting, in order to achieve the desired lighting effect. We have put together a small selection for you, according to which we also select the suitable lighting for an image processing system.
Panel luminaires must be very uniform in order to be able to reliably evaluate edges or translucent materials in conjunction with industrial image processing.
With conventional matrix systems, where the LEDs are located directly under the luminous surface, the failure of only one LED means that correct evaluation cannot take place with glossy test pieces. The dark point in the luminous surface is reflected in the test piece, and the image processing software would report a rejected part.
The LED luminous surfaces of planistar, on the other hand, remain stable in brightness and illumination over a long period of time. This means that nothing can stand in the way of image processing over the entire service life of the application.
A further advantage of edge lighting for diffuse incident light is that the light guide can be interrupted at any point and in any shape, e.g. to provide keyhole openings for grippers, oblong holes for line scan cameras or openings for other mechanisms.
Illumination selected too small
Correct LED illumination for incident light
A complex but important topic is to determine the correct size of a diffuse incident light with camera cut-out for image processing. The test piece and the inspection task must always be taken into account!
Most toplights are designed too small:
Luminous area = measuring area
Unfortunately, this does not work.
If the surface emits diffuse and uniform light, the measuring surface of the same size is not illuminated in a diffuse and uniform manner!
It is necessary to consider the light incident or reflected by the test object and not the light emitted by the luminaire. Especially with reflecting objects, it is important that the luminous area is at least twice as large as the measuring area.
This is due to the fact that the camera only sees the reflection of the luminaire in the test object. The camera angle always yields twice the size, no matter how large the camera distance is.
In the case of slightly shiny or matt test objects, the luminaire can be reduced in size by supplementing the missing reflection by the luminaire with white matt side panels. The luminaire unit must also be slightly larger than the measuring surface, otherwise there will be no more reflection in the edge area. This saves costs and reduces space requirements. At the same time, extraneous light is sealed off, which could otherwise falsify the measurement.
Our surface illumination in combination with white matt side panels is an ideal solution for many image processing tasks. Similar to a dome, diffuse light is distributed throughout the interior.
The unit can be equipped with suitable mounting options. This ensures simple assembly into the overall system.
We respond to your needs and give you individualised advice. Our selection of surface illumination systems for industrial image processing goes far beyond a standard product range. Ask us without obligation.
More information and points of contact:
| +49 (0) 9364 8060-0 | sales@no-spam.planistar.de | Complete catalogue |
We will be happy to develop tailor-made solutions for you. Fast, inexpensive and individual.
