What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope?
The low power objective lens on a microscope is also known as the scanning lens.
The total magnification with the scanning lens on a microscope typically ranges from 4x to 10x. This is because the scanning lens typically has a magnification power of 4x or 10x, and when combined with the magnification of the eyepiece (usually 10x), the total magnification ranges from 40x to 100x.
Scanning a specimen using a low-power objective allows you to observe the greatest number of cells within the field of view. Low-power objectives have a lower magnification but a wider field of view compared to high-power objectives, enabling a broader view of the specimen.
The lower objective on a microscope helps to provide initial magnification of the specimen. It typically has a lower magnification power compared to the higher objectives. This objective is usually used for scanning the specimen and locating areas of interest before moving to higher magnifications.
The oil immersion objective lens provides the highest magnification in a compound light microscope, typically ranging from 90x to 100x. This lens requires a drop of oil to be placed on the slide to reduce light refraction and increase image clarity and magnification.
The shortest objective lens in a microscope is typically referred to as the scanning lens.
low power objective lens
Scanning objective
40-50x
scanning objective
When using a 4x objective lens on a microscope, the total magnification is calculated by multiplying the objective lens magnification by the eyepiece magnification. If the eyepiece (ocular) lens is typically 10x, the total magnification would be 4x (objective) × 10x (eyepiece) = 40x. Therefore, when scanning with a 4x objective, the total magnification will be 40x.
Try it any other way and you'll see. The scanning objective has the largest field of view, the greatest depth of field, and the greatest working distance. It is the most forgiving objective. It is the easiest to find the specimen and focus on it.
The scanning power objective relates to the objective lens. Most microscopes provide two or more objective lenses to give a choice of magnification power. Some also include an oil immersion lens for even greater magnification.
The medium power scanning objective in a microscope typically has a magnification of around 20x to 40x. It is used to locate and focus on the specimen at a lower magnification before switching to higher magnification objectives for detailed observation.
The low power objective lens on a microscope is also known as the scanning lens.
The lowest power of a microscope is typically 4x, known as the scanning objective lens.
The shortest objective on a microscope is typically the scanning objective, which has the lowest magnification power (usually around 4x). This objective is used to locate and focus on the specimen before switching to higher magnification objectives for detailed viewing.