Illumination via LEDs can be dangerous at high light intensities. The risk groups are used to assess the security or risk.
Free group:
Luminaires do not pose a photobiological hazard.
Risk group 1:
Luminaires do not pose a hazard due to normal restrictions caused by user behavior.
Risk group 2:
Due to the normal human reactions of turning away from bright sources of light and withdrawing from thermal discomfort, bright light sources do not represent any danger.
Risk group 3:
Luminaires are already a danger for volatile or short-term radiation. Use in general illumination is not permitted.
M3DS sensors are rated in risk group 2.
A 3D point cloud is a set of points that define the point in the space using the three spatial coordinates.
The triangulation angle between the light source and the camera causes illuminated objects to cast shadows. The object obstructs the light and creates what is known as shading.
If the background is obscured by an object, it is no longer visible to the camera. This is the so-called obstruction.
Depth information can only be output for areas that are neither shaded nor obstructed. The greater the triangulation angle, the more intense the shading or obstruction.
Structured light is an illumination technology where the light creates a defined pattern such as stripes, lines or grids.
Triangulation is a measuring method with which the distance to an object is calculated based on angular relationships. The distance of the object can be determined by the known distance between the light source and the camera (baseline) and the triangulation angle.
LEDs are most efficient here and the shorter wavelength improves scatter behavior on metal surfaces.
The 3D sensor operates reliably in workshops with standard conditions, but cold light with a color temperature >5500 K (e.g. neon tubes) can interfere with the absorption process and should be avoided.
We use filters to block out as much ambient light as possible. However, the 3D sensor is only suitable for outdoor use to a limited extent.
The blue wavelength used is reflected much less effectively by red and orange surfaces than most others. To compensate for this, appropriate exposure time, gain and LED power settings must be made until a suitable setting is found.
SDK stands for Software Development Kit. An SDK is a collection of programming examples, tools or libraries that makes integration or use of the hardware easier.
The sensor should be firmly mounted and not subject to vibrations. Avoid direct sunlight. There should be no direct reflections from the illumination into the camera.
The sensor should be aligned vertically to the object and have as clear a view of the object as possible.
No, the blue light does not pose a danger to eyesight. Nevertheless, we recommend that you do not look into the “light engine” for long periods.
The maximum measuring volume is defined for each 3D sensor during calibration. However, the ROI function can be used to reduce the measuring volume in Z.
Yes, our 3D sensors are compatible with GenICam. The 3D point cloud can be forwarded to third-party software via the standardized interface.
The specified resolution in the measuring range Z is in similar ranges. The resolution in the measuring range X and Y reduces towards the end of the measuring volume.
No, the corresponding standard – risk group 2 (EN 62471) – does not provide for measures for the combination of wavelength and radiation intensity.
Yes, that's possible. The interface adapts to the speed of the receiving system.
Yes, the sensor is suitable for industrial use and can be used on moving components.
No, there is no compatibility.
Yes, there is an SDK in C++.
The pattern projection process works very well with a camera. The advantage of a second camera in the sensor to avoid shadowing has rarely proven to be necessary in most applications.
