https://www.microscopyu.com/tutorials/workingdistance

In general, the objective working distance decreases as the magnification and numerical aperture both increase.

https://www.thermofisher.com/us/en/home/life-science/cell-analysis/cell-analysis-learning-center/molecular-probes-school-of-fluorescence/fundamentals-of-fluorescence-microscopy/understanding-your-objective.html

The working distance is the distance between the objective and the cover glass, or between the objective and the top (or bottom) of whatever vessel you are ...

https://www.edmundoptics.com/resources/application-notes/microscopy/understanding-microscopes-and-objectives/

Before deciding on the type of illumination setup to work with, consider the .... The JIS standard has a 170mm distance from objective flange to eyepiece flange ...

https://www.celestron.com/blogs/knowledgebase/what-is-the-working-distance-of-my-microscope

Nov 24, 2008 ... There are two working distances for microscopes: objective and stage. Together they define the space you have to work with objects and still ...

https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=9922

Thorlabs offers Mitutoyo Plan Apochromat Objectives with 5X, 10X, 20X, or 100X magnification. These plan ... The long working distance provides a wide spac.

https://www.olympus-ims.com/en/microscope/terms/working_distance/

The distance between the front edge of the objective lens and the specimen surface (with the surface of the cover glass in case of the cover glass objective lens) ...

https://www.newport.com/f/long-working-distance-objectives

These objective lenses are an M Plan Apochromatic design which offers a flat field correction, long working distances and superior optical performance.

https://www.olympus-lifescience.com/en/microscope-resource/primer/anatomy/objectives/

The objective illustrated in Figure 1 is a 250x long working distance apochromat, which contains 14 optical elements that are cemented together into three ...

http://microscopy.arizona.edu/learn/light-microscope-objective-lenses

Working distance is “… the distance between the objective front lens and the top of the cover glass when the specimen is in focus. In most instances, the working ...

http://zeiss-campus.magnet.fsu.edu/articles/basics/objectives.html

Lower power apochromat objectives (5x, 10x, and 20x) have a longer working distance than higher power (40x and 100x) apochromat objectives. Apochromats  ...