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VK-X210, Vorm meten laser microscoop, VK-X-reeks, KEYENCE, Belgium.

FOVtofocal length calculator

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Field of viewvs angleof view

The camera field of view (FoV) is a crucial concept in photography that determines the area visible to the camera lens. Measured in degrees, the FoV is influenced by both the lens focal length and the sensor size.

The purpose of a microscope is to magnify small objects, and both lenses contribute to the final magnification.

Viewangle

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This calculator provides the camera's field of view based on an image sensor and a lens. The field of view of a camera is dependent upon the focal length of the lens, the image sensor size, the lens distortion, and the lens image circle. We also have a wide angle lens FoV calculator which provides the field of view for our lenses on your camera's sensor.

The lens focal length is a critical factor in determining the camera’s field of view. A shorter focal length, such as 2mm, provides a wider field of view, allowing you to capture expansive scenes. On the other hand, a longer focal length, like 50mm, offers a narrower field of view, which is perfect for zooming in on distant subjects. It’s important to note that the focal length of the lens is used to calculate the FoV. Changing the focal length of the lens will directly alter the FoV, even if the sensor size remains the same.

fov和焦距的关系

Lenses can be thought of as a series of tiny refracting prisms, each of which refracts light to produce their own image. ... meaning is firmly internalized in ...

1.) The effective focal length of the lens (EFL)The EFL of a lens is a first order optical parameter. It should not be confused with the Back Focal Length (BFL) or the Flange Focal Distance (FFD) which are mechanical parameters. 2.) The image sensor active area The image sensor active area is calculated by using the pixel size and the total number pixels in the resulting image/video. If the output image or video is cropped, the field of view will change. 3.) The relative illumination of a lens The relative illumination is the reduction of light transmitted through a lens, as a function of position in image space. The camera industry loosely uses the term “Image Circle” as the position in image space where relative illumination is ~50%. 4.) The distortion of a lens Lens distortion is an aberration that occurs in optical design. Distortion is common in wide angle and fisheye lenses, but can occur in normal field of view lenses. Distortion increases the Field of View of a lens by compressing the angular resolution.

Hyperfocal distance calculator

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Microscope eyepieces can also correct image errors or prevent reflections - thanks to anti-glare coatings. Some of them are also equipped with a millimeter scale, which allows precise measurement of the object under examination.

field ofview中文

Microscope eyepieces are very diverse in terms of quality and price. It is worthwhile to have at least 2-3 eyepieces of different magnification, as it is then possible to observe different objects. Choosing a good quality eyepiece, with a wide angle of view, will provide you with a sharp and detailed image. However, much depends on the type and advancement of your research. Professional and most expensive eyepieces are microscope accessories used by scientists who conduct observations at the cellular level. Amateurs do not need such advanced eyepieces. So do professional contractors who use microscopes, for example, to repair equipment, so they work on larger objects.

Dec 17, 2023 — Objective lenses are the primary lenses closest to the object being looked at in a microscope. They are like the eyes of the microscope.

Thus, when choosing eyepieces, it is necessary to consider their purpose, as well as the skills of the microscope user. If it is a school microscope, that is, for example, an OPTICON Biolife or OPTICON Investigator XSP-48 microscope, then even cheaper models of eyepieces will work fine. Remember, also, that the eyepiece should also be matched to the type and model of the telescope.

DOF calculator

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The sensor size of the camera also plays a significant role in determining the field of view. A larger sensor size will provide a wider field of view for the same lens, capturing more of the scene.Conversely, a smaller sensor size will result in a narrower field of view. The crop factor, which is the ratio of the sensor size to a standard full-frame sensor, further impacts the FoV. A larger crop factor means a narrower FoV, effectively magnifying the image. Understanding how sensor size and crop factor affect your FoV can help you choose the right camera and lens combination for your camera hardware design project.

Let's now turn to magnification. Microscope eyepieces can magnify the image 2, 10, 16 or even 20 times. This information is usually found on the eyepiece tube and looks like this: WF 10x. This means that the given microscope eyepieces magnify the image 10 times. Sometimes next to this value there is also a number indicating the field of view. The larger it is, the better the visibility of a given object and comfort of observation.

Microscope eyepieces can vary in diameter, field of view, magnification, and also additional features. If you are planning to buy a new eyepiece, its diameter should be adjusted to the particular microscope model. How to do it? The tube of each optical microscope is equipped with eyepiece slots. New microscope eyepieces should be matched to their design and diameter.

Field of view

The microscope eyepiece, as well as the objective lens, magnifies the image seen and affects the magnification value of the whole device. Microscope eyepieces can offer us different magnifications. So, you only need to replace this element to get a higher or lower magnification, and adjust it to the object you are observing at the moment. In this way, you can also increase the field of view by choosing a better quality eyepiece. A wider field of view provides more comfort and makes it easier to conduct research.

Click for more information on depth-of-field, and how it impacts microscope performance from KEYENCE.

Microscope eyepieces are the moving parts that make up the optics of any microscope. They are used to magnify the image received through the lens. By replacing them in a simple way, we can increase the class of our equipment. It is through the eyepiece that we look at the object being studied under the microscope, so its parameters and quality also affect the observations being made. It is worthwhile to be equipped with at least a few eyepieces and replace them depending on your needs, as well as the type of sample to be analyzed.