Anti reflectiveglasses meaning

Courtney Dryer, OD, received her doctor of optometry degree from Southern College of Optometry in 2011. She is the owner of Autarchic Spec Shop in Charlotte, NC. She has worked with Eyes on Eyecare since its founding and regularly contributes to optometric publications and vision care websites.

Anti reflectiveglasses benefits

Anti-reflective coatings have vastly improved in recent years. There are now hundreds of different types for each kind of lifestyle and patient need.

One of the characteristics of a microscope eyepiece is the microscopic Field of View commonly abbreviated FOV. The size of the FOV is expressed numerically in millimeters and is directly proportional to the combination of the eyepiece and the objective in use.

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The process of creating premium anti-reflective coatings requires substantial technology, and looks something like this:

anti-reflective coating是什么

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The eyepiece, also referred to as an ocular, has a field stop as part of its design. The FOV is limited by this field stop and is defined as the diameter of the circle of light seen when looking into a microscope. The actual FOV is calculated by dividing the field number (FN) by the objective magnification. An eyepiece with FN=20 used with a 10X objective would have an FOV of 2.0 mm while an eyepiece where FN=26 would have an FOV of 2.6 mm. Widefield oculars have the advantage of showing a larger area of the sample at a given total magnification. Stereoscopic microscopes tend to offer a larger FOV even though their total magnification capabilities are less than compound microscope.