Large Working Distance Microscope

Microscope objectives are usually designed with short working distances.

Large working distance microscope.

All objectives have flat image surface over 42mm field of view highest standard in the objective design. In the case of objectives designed to be used without coverslips the working distance is determined by the. The stage working distance is the vertical distance. The leica z16 apo is a fully apochromatic zoom system for high contrast high resolution detailed analysis.

Microscope objectives are generally designed with a short free working distance which is defined as the distance from the front lens element of the objective to the closest surface of the coverslip when the specimen is in sharp focus. The modular design allows an optimized configuration for the individual applications. The magnification is from 1x to 43x. Thanks to its advanced optical design including an aspherical element and optimized coatings that minimize.

Long working distance objectives are often labeled with lwd. The extra working distance and larger field of view make this series an ideal solution for tasks such as repair rework or assembly or for working with bulky objects. Microscopes use a parfocal lens that stays in focus when the magnification or focal length changes. Working distance refers to the space between the front lens element or tip of the microscope lens and the closest cover slip surface.

The objectives are called plan because they produce the flat image across the field of view. It decreases as magnification resolution and numerical aperture increase. Long working distance microscope objectives are designed around 426 to 656 nm to provide a chromatic aberration free image with flat field correction. Together with the leica dfc cameras and the leica applications suite this is ideal for digital imaging.

For tasks where extra distance to the object and a larger field of view is required dino lite offers a series of long working distance microscopes. The special designed lens offers a long working distance with larger field of view 4 inches. In general the objective working distance decreases as the magnification and numerical aperture both increase as presented in table 1 for a highly corrected series of nikon plan fluorite. Long working distance objectives these objective lenses provide a longer working distance when compared to standard objectives without compromising magnification.

Working distance can range from 50 mm for dissecting or stereo microscope objectives to less than 0 1 mm for high power oil immersion objectives. The single beam path provides 2d images and ensures parallax free imaging. Holmarc developed super long working distance microscope objective for high image quality inspection and analysis application. Presented in figure 1 is a schematic illustration of an objective showing the parfocal and working distance length specifications as well as other descriptions engraved or printed on the objective barrel.