Focal lengthof microscope

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The focal length is variable for neurosurgical, spine, and ENT procedures. For example, the objective lens combination can be configured so the focal length is from f=200 to f=450. So, any object within f=200 to f=450 will be in focus. Plus, any object outside f=200 to f=450 will never be in focus. The minimum working distance from the surgical site objective is 200 mm. So, if an instrument is 300 mm long, you would not want the microscope in the 300 to 450 mm range.

Working distance of40x objective

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Working distance of10X objective

Most C-mount lenses have a fixed focal length, making them ideal for industrial applications with fixed imaging parameters as object size and working distance. This allows for high resolution and contrast when capturing images.

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Working distance microscopedefinition

C-mount lenses are widely used in industry due to their special features and advantages. The name "C-mount" refers to the mechanical mount that attaches the lens to the camera. C-mount lenses are an ideal choice for machine vision applications due to their robustness, durability, high optical performance and affordable cost.

Working distance of4x objective

Working distance microscope4x

In addition, C-mount lenses are typically more affordable than other types of industrial lenses for larger sensors. This makes them a cost-effective solution for companies looking to automate and improve their production processes.

Working distance ofoil immersion objective

Focal length and working distance are critical. You need enough space under your microscope to accommodate your instruments. Surgical microscope focal lengths vary in two types: fixed focus and variable focus.

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The characteristics of C-mount lenses are tailored to the requirements of industrial image processing. They feature high optical performance and precise focusing to deliver detailed and sharp images over long lifetime.

The “Front Lens” of the microscope is the convergent (double convex) lens. The focal length is the distance between the front lens and the object at F. Usually, it is imprinted with f=xxx on the lens’ bezel.

Working distance ofhigh power objective

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Also, remember that with increased focal length (working distance), more of the objective will be in view. This is called Field of View (magnification aspect discussed later).

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Fixed focal length convergent lenses, usually f=175 or f=200, are used for ophthalmic procedures. Some operating microscopes for ENT procedures may also use a fixed front lens.

One of the main advantages of C-mount lenses is their ruggedness and durability. Designed specifically for use in industrial environments, they can withstand high temperatures, humidity, vibration and other adverse conditions. This makes them ideal for use in production environments.

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C-mount lenses are used in a variety of machine vision applications, including quality assurance, inspection and production process monitoring. Other applications are in the field of robotics and automation to identify, position and track objects. C-mount lenses are also used in scientific research and medical technology to capture detailed images of samples and tissues.

The working distance can then be determined. For example, if the front lens has a focal length of f=200, the object will not focus at less than 200 mm working distance. In addition, using a 300 mm instrument would not be advised.