QUESTAR POWERPAK APLANAT LENS

For those applications with either the Questar QM 100 or Questar Step Zoom SZ M100 Long Distance Microscopes where the highest resolution and magnification are necessary we offer the optional "PowerPak 100".

Right: Questar Aplanat Lens, P/N 39485 option for QM 100 and SZ M100 LDM systems (135,159 bytes).
Click on image to see enlarged view (291,583 bytes).

The Questar "PowerPak" consists of both the optional Aplanat Lens (P/N 39485) and our Achromatic 3X Barlow Lens (P/N 39495) working together in a combination that provides a twenty five increase in resolving power at a distance of 10 centimeters (3.94 inches). The Aplanat lens corrects for spherical aberration that would otherwise degrade the image quality when working at such close distances. Now you can safely observe or image your sample with sub-micron feature resolution.

For use with the Questar QM 100 models only, the complete set can be ordered as P/N 39487 which will include both the Aplanat Lens and the 3X Barlow. For use with the Step Zoom SZ M100, then order the Aplanat Lens (P/N 39485) and specify the 3X Barlow (P/N 39495) to be provided installed in one of the five magnification ports in the Step Zoom SZ M100. For operation, thread the Aplanat Lens onto the front of the Long Distance Microscope, and then install the 3X Barlow within the Camera Coupling Set hardware at the Axial Port (or within the SZ M100). Note while it is possible to use the 1.5 and 2x Barlows stacked to net the 3X instead of the 3x however, this is not as optimum a solution as using the 3X Barlow alone.

And use special care when lighting the experiment. Since the QM-100 optical tube assembly will be so close to the intended target of observation, 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. Note the different lighting techniques will reveal different features on the target. Please contact Company Seven for advice about the applications of our systems and lighting techniques.