by Gast
Electronics for laser scanning devices
Circuits or LEDs in 3D sensors for geometry, surface inspection and scanning
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For geometric component inspection, for position determination, for presence inspection and for flatness or planarity measurement - 3D sensors and laser scanners are used for inline applications, on robots and also for offline inspection. But also in industrial design and manufacturing, even in forensics, science and medicine, excellent quality 3D scanners form the basis for 3D models and quality inspections.
This involves the optical detection of the position and dimension of objects. Human 3D vision is based on the so-called stereoscopic effect. It refers to the process of viewing an object from two different positions. In this process, the image seen by each eye is similar but slightly shifted. The amount of shift depends on the depth (distance) between the eyes and the object, while the image tends to shift for closer objects. Through accommodation, that is, adjusting to distance with the help of the eye's lens, the eye sets the correct focus, or sharpness. The brain evaluates the light that hits the retina from the object, the "data," and then "calculates" a sharp three-dimensional image from it.
Surface scanners technically implement biological 3D vision and must deliver fast measurements with high precision. In addition, a wide variety of measurement ranges must be covered. The capture of the smallest details and structures is just as important as the measurement of large objects at the same time as a large base distance. This is an optical challenge for the electronics in 3D laser scanners and surface sensors.
HR Individual assembly and connection technology is what counts
IR LEDs in the scanner interact with LED markers installed separately in the room to detect the position in the room. In this process, it may be necessary to dissipate heat. Here, the use of ceramic carrier material or housings is an option:
- SMD assembly,
- Chip-on-board technologies,
- Protection of the circuit by housing or coatings, such as Parylene
The exact positioning of the components in the housing or substrate is important here, especially in the case of optical components.
Advantages of ceramic substrates
- High resistance to thermal and mechanical stresses, such as vibration and oscillation
- Heat dissipation enables stable function
Our sales team will be happy to advise you during all phases of project development, working with you to develop the most suitable component for your application.
