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www.mbfbioscience.com/help/nl11/Content/calibration/parcentric_parfocal.htm

Parcentric/parfocal calibration . See/Print PDF Watch a video on YouTube (2:47). Overview. Parcentric and parfocal calibration compensate for the deviations from parfocality (focal plane) and parcentricity (collimation) that are normally encountered between different microscope objective lenses.

quizlet.com/9642836/bio-lab-2-flash-cards

Start studying Bio lab 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. ... Microscopes are designed to be parfocal. ... Microscopes are designed to be parcentric. Field of view. The circle of light that is visible through the ocular of the microscope.

quizlet.com/114565312/learning-the-microscope-flash-cards

parfocal lens allow the the subject to remain in focus as the objectives are changed from low to high to oil immersion. Parcentric means an object in the center of the field of veiw using one objective will be center when another objective is used.

www.reference.com/science/mean-microscope-parfocal-d49f701201ffe9d2

What Does It Mean When a Microscope Is Parfocal? Parfocal microscopes maintain focus throughout real-time magnification changes. These microscopes also remain focused when the user rotates objectives. This capability is a function of the lens and is a particularly popular feature on field microscopes. Parfocal lenses also appear on high quality ...

www.answers.com/Q/What_is_the_advantage_of_the_parfocal_lenses

Microscope lenses that are parfocal and parcentric allows the user to changed between lenses will keeping the speicemen focused and centered, instead of having to adjust the x, y or z plane (i.e ...

www.answers.com/Q/What_is_parcentric

Microscope lenses that are parfocal and parcentric allows the user to changed between lenses will keeping the speicemen focused and centered, instead of having to adjust the x, y or z plane (i.e ...

en.wikipedia.org/wiki/Parfocal_lens

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. There is inevitably some amount of focus error, but small enough to be considered insignificant.

www.microscopyu.com/microscopy-basics/working-distance-and-parfocal-length

Working Distance and Parfocal Length. 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. In the case of objectives designed to be used without coverslips, the ...

www.merriam-webster.com/dictionary/parfocal

Parfocal definition is - being or having lenses or lens sets (such as eyepieces) with the corresponding focal points all in the same plane. being or having lenses or lens sets (such as eyepieces) with the corresponding focal points all in the same plane… See the full definition.

www.thefreedictionary.com/paracentric

Paracentric curve (Math.) a curve having the property that, when its plane is placed vertically, a body descending along it, by the force of gravity, will approach to, or recede from, a fixed point or center, by equal distances in equal times; - called also a paracentric.