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QUESTAR QM 100 PHOTO-VISUAL LONG DISTANCE MICROSCOPEThe Questar QM 100 Long Distance Microscope is designed to provide resolutions of as fine as 1 µ (0.00003937007874 inch!) or less thus making it an invaluable instrument for observing materials and biological targets located too distant from the instrument to be observed with conventional microscopes. Common applications have included materials testing (crack propagation, studies of dendrites and other surface features, quality control), studies of bubble formation and flow (fuel dispersion) within a chamber, etc. The QM-100 can be used to focus on a target directly in front of it, or located behind a transparent window (in a furnace, or in a test tube, etc.). Furthermore, the QM-100 can illuminate that target using the coaxial technique, and this is among the many the advantage of these systems: one can observe the target with the Long Distance Microscope while simultaneously lighting the target through the LDM! The system is engineered to accept a diverse selection of optics to increase or decrease magnification and field of view, bandpass filter, color filters for contrast enhancement, polarizing filters, etc.
The Questar QM 100 combines the compactness and the ease of use of the Questar QM 1 with the relative aperture and resolution of the larger microscopes. For applications requiring high magnification and resolution, and which will allow the user to work from distances of 15cm (5.91 inches)* to 35cm (13.78 inches), the QM 100 is unrivaled in performance and flexibility.
*With the optional Questar PowerPak 100 then this can be reduced to 10cm (3.9 inches)!
This instrument is a completely different optical formula than the QM 1, it is not merely an adaptation of an existing design. But rather it is an evolutionary development whose concept originated with the QM 1.
Note the different lighting techniques will reveal different features on the target. And use special care when lighting the experiment when working at the closest distances. Since the QM-100 optical tube assembly will be so close to the intended target of observation then conventional lighting might be obscured by the instrument or may be located at such shallow angles to the target that they will not illuminate to the desired depths, and so we recommend coaxial illumination (Fiber Optic Light Guide attached to our optional Brightfield Adapter (P/N 39170) to pump light directly through the QM-100 focused onto the target. Or consider backlighting the object if it is either transparent material or thin enough to have light projected through it. Please contact Company Seven for advice about the applications of our systems and lighting techniques.
Right: Questar QM 100 Long Distance Microscope set for Co-Axial lamination of target (at left).
Above: Table illustrating Depth of Field, and f-number of the QM-100