What is the definition of Parfocal?

A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but small enough to be considered insignificant.Click to see full answer. Correspondingly, what does the term Parfocal mean?A. Parfocal means that the microscope is binocular. B. Parfocal means that when one objective lens is in focus, then the other objectives will also be in focus.Likewise, what does it mean if a microscope is Parfocal and Parcentered? Parcentered: A microscope that is “parcentered” is one in which the object in the center of view will remain in the center when the objective is rotated. Parfocal: A microscope that is “parfocal” is one which, if it is in focus with one objective, when the objective is rotated, will remain (mostly) in focus. Also Know, what is Parfocal length? The parfocal length is the distance from the shoulder of the objective to the focal plane. By stacking two matched 15 mm adapters together, the user can also extend an objective with a parfocal length of 45 mm to one with a parfocal length of 75 mm.What does Parfocal mean quizlet?Parfocal. This is the quality of the microscope that allows you to change objective lenses without greatly altering the focus. magnification. The ability to make an object larger.

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