This is referred to as the high powered objective lens since it is ideal for observing the small details within a specimen sample. The total magnification for this lens is equal to 400x magnification (10x eyepiece lens x the 40x objective equals 400). Hence, why it is often preferred before going for a high powered lens. Since it still provides a good amount of magnification at a good distance from the slide, there is a limited risk of it breaking the glass and potentially ruining the sample. The total magnification for this lens is equal to 100x magnification (10x eyepiece lens x the 10x objective equals 100). This objective lens is the next lowest powered and is often the most helpful when it comes to analyzing glass slide samples. This objective is often referred to as the scanning objective lens since the low power provides enough magnification to give the observer a good overview of the entire slide and sample. For example, 10x eyepiece lens, multiplied by the 4x objective lens gives a total magnification of 40x. Scanning Objective Lens (4x)Ĭombined with the eyepiece lens, this lens will provide the lowest magnification power. This commonly includes 4x, 10x, 40x, and 100x objective lenses. The majority of compound microscopes come with interchangeable objective lenses, which have different magnification powers. While the total magnification is determined by both the objective and ocular lens, the resolution is determined by the objective lens alone. Resolution is defined as the ability to distinguish 2 points as two points.įor example, if you are looking down a microscope, the resolution power relates to the space you can see between two points. A very low resolution would result in a blurred image and would prevent proper observation of the specimen. Resolving power is also a very important metric since magnification power is of little importance if the resolution is not high. This means that the specimen being observed is now 100X it’s actual size. Therefore, for 10X objective and 10X ocular the total magnification = 10 X 10 = 100X Total magnification = Objective magnification X ocular magnification The objective lens and the ocular or eyepiece lens are in combination responsible for magnification of the specimen being observed. These types of microscopes are also the same in that each type has an eyepiece or ocular lens. The majority of light microscopes have an objective lens of some kind, which includes both compound microscopes and stereo microscopes. What is the Difference between Ocular and Objective lenses?.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |