For integration into your own devices and systems, we offer a series of USB 3.0 microscopes with coaxial illumination and Metric measurement software. Thanks to their extremely small size, the USB 3.0 microscopes are perfect for installation in confined spaces. The excellent optics in combination with the 5.6 megapixel USB 3.0 camera provide perfect images. In combination with the Metric PE and Metric MT measurement software, fast and precise 2D measurements and documentation are possible. Alternatively, the system can be supplied with an HDMI camera if only visual inspections are to be carried out (connection only to a PC monitor without the use of a PC). The three models are available with a 3x, 5x and 10x lens. On request, the T-ILC versions are also available with different stands or mounted on precision guides. The technical data for the three models can be found on the following product pages.
The purpose of coaxial illumination is to illuminate surfaces with reflective properties: coaxial illumination is particularly suitable for shiny or reflective surfaces, such as metals, glass or polished semiconductors. Here, otherwise disturbing reflections are minimized, and fine details can be seen. Shadow-free imaging: Illumination is along the optical axis (coaxial with the direction of observation). This means that there are no shadows or unwanted contrasts, which can occur when light falls at an angle. Emphasizing surface structures: The special light guidance makes scratches, defects or microstructures on the surface particularly clearly visible. Inspection of transparent or semi-transparent materials: Coaxial illumination also makes it possible to visualize inclusions, cracks or other defects in transparent materials such as glass or foils.
How does coaxial illumination work? Light guidance: A light source sends the light through a beam splitter or a half mirror into the optical system. The light hits the sample perpendicularly (coaxially to the observation direction). The reflected light from the surface is then directed to the objective and to the observer via the same beam splitter. Reflection: The perpendicular incidence of light produces particularly strong reflections on flat surfaces. Structures that are not flat or are slightly inclined appear darker. The areas of application for coaxial illumination include, among others:
- examination of polished metals, alloys or ceramic samples
- Semiconductor industry
- inspection of wafers or microchips for surface defects
- Quality control
- detection of hairline cracks, dust inclusions or surface defects in reflective materials
- Medical applications
- examination of microtome specimens or reflective samples
Advantages of coaxial illumination
- Enables homogeneous, shadow-free illumination
- Optimizes the display of microscopic surface structures
- Ideal for reflective and transparent materials
- Improves the detection of defects, cracks or unevenness
Conclusion
Coaxial illumination plays a crucial role in microscopy when it comes to examining shiny, reflective, or precise surfaces without disturbing shadows or reflections. It offers clear advantages in quality control, materials testing, and the examination of fine surface structures.
