Parfocalty is a property of the optical components that allows the microscope to stay in focus when changing between lenses of different magnification . This means that when the objectives of a microscope are changed from higher to lower magnification or vice versa, the sample you are viewing stays in focus.
14 июл. 2020 г.
Parfocalling compound microscope objectives is a procedure which allows you to adjust each objective lens so that it will remain in relative focus with the ... |
When a microscope is parfocal, it is easier to use. The user can work more efficiently without wasting time constantly refocusing. Just imagine trying to ... |
It is helpful for a microscope to be parfocal because the user does not have to adjust the focus when changing the power of magnification. |
8 дек. 2023 г. · A parfocal objective means you can change the objective without having to readjust the focus. That means it holds the focus with only minor or no adjustments. |
24 мар. 2022 г. · Parfocal lenses are those that are oriented in such a way that the specimen remains in focus as the objectives are rotated into place. |
Продолжительность: 1:26 Опубликовано: 27 июн. 2014 г. Не найдено: important | Нужно включить: important |
Videolar 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 too small to ... |
Long working distance objectives are particularly useful when examining specimens in vitro through thick glass walls and for chemical and metallurgical ... |
26 сент. 2021 г. · A Parfocal microscope maintains focus throughout real-time magnification changes. These microscopes also remain focused when the user rotates objectives. |
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