Modern optical microscopes are high-tech devices with complex functions and operations. So that not just specialists can get the best out of these advanced instruments, Leica have produced a microscope which automatically selects the optimal combination of optical components.
Many modern items of equipment can do too much. It is not only when operating a video recorder or a mobile phone that you can quickly end up in the depths of some menu full of unclear functions. New features are overlooked, and even useful standard functions are often neglected - and this applies to optical microscopes too. For a long time now these magnifying instruments have incorporated a selection of contrast modes for transparent or opaque samples. Non-transparent ones are viewed using direct light. To use the various modes, lots of lenses, apertures and filters have to be selected and skillfully combined. “You have to be an expert to coax the best image out the microscope,” affirms Christian Knoll, designer and engineer at the Fraunhofer Institute for Industrial Engineering IAO.
Leica have made things simpler with their new “DM5000 B” instrument: Its electronic control system links up all the interdependent optical components. The user decides on a contrast mode and the microscope automatically selects the matching optical components and their settings. “A microscope normally has lots of levers and switches, which the user has to operate by hand,” explains Knoll. “For the fully automatic device we have developed a central user interface: 80 percent of the functions can be controlled by using a touch-screen in the base of the instrument.” No standards existed for this type of control, however, and so the research scientists also designed the structure of the operating menus. Here they had to deal with such problems as which symbols would be best for a language-independent system, or what happens if the user makes mutually incompatible entries. They tested the intelligibility of the control system and pictograms on people in Germany, France, the USA and Japan.
Johannes Ehrlenspiel | alfa
Cell Division at High Speed
19.06.2019 | Julius-Maximilians-Universität Würzburg
Monitoring biodiversity with sound: how machines can enrich our knowledge
18.06.2019 | Georg-August-Universität Göttingen
The quality of additively manufactured components depends not only on the manufacturing process, but also on the inline process control. The process control ensures a reliable coating process because it detects deviations from the target geometry immediately. At LASER World of PHOTONICS 2019, the Fraunhofer Institute for Laser Technology ILT will be demonstrating how well bi-directional sensor technology can already be used for Laser Material Deposition (LMD) in combination with commercial optics at booth A2.431.
Fraunhofer ILT has been developing optical sensor technology specifically for production measurement technology for around 10 years. In particular, its »bd-1«...
The well-known representation of chemical elements is just one example of how objects can be arranged and classified
The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...
Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.
Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...
Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.
The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...
Discovery by Brazilian and US researchers could change the classification of two species, which appear more akin to jellyfish than was thought.
The tube anemone Isarachnanthus nocturnus is only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923 base pairs....
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
19.06.2019 | Physics and Astronomy
19.06.2019 | Information Technology
19.06.2019 | Materials Sciences