Videoscopes or video borescopes are equipped with a CCD chip and focusable lens assembly that relays images from bores and cavities to a display. The camera is embedded in the tip of the scope and uses CCD technology rather than optical relay components (borescopes) or fiber optics (fiberscopes). Charge coupled device (CCD) chips contain micro circuitry that transfers a detected signal along a row of discrete picture elements or pixels. Often, videoscopes are connected to an external media recording device such as a computer hard drive.
Videoscopes carry specifications for tube or sheath diameter, working length, field of view, minimum focus distance, and operating temperature. Tube or sheath diameter is the diameter of the probe that is inserted into the bore or cavity for inspection. Typically, this measurement determines the minimum-sized hole with which the video borescope can be used. Working length is the length of the probe. It effectively determines the depth of the videoscope’s inspection capability.
Viewing angle is an important specification to consider when choosing videoscopes. Direct devices are limited to straight-on viewing, but are suitable for inspecting straight lengths of pipe, engine cylinders, and fuel injectors. Forward-oblique videoscopes have a viewing angle 0° and 90° for a combination of forward navigation and side visibility. Inspection tools with side viewing permit the visual inspection of greater detail on bore, cylinder, or pipe walls. Devices with a retrospective or backward-oblique viewing angle are also available.
Configurations and Features
Videoscopes are available in a wide range of configurations, with many optional features that may allow for easier use and more clearly produced images. Some of the more common configurations include the viewing angle of the device, its resolution, frame production rate, and video format and color output type. Optional features include whether the device has a 2-way or 4-way articulating tip, or whether the device can accommodate interchangeable tips; whether the tip can rotate or is fixed; is the entire device flexible or just its neck and tip; and the adjustability of the light source to provide brighter, higher resolution images without edge fading or hot spots.
Videoscopes are widely used in medical fields, including cardiology, dentistry, and reproductive analysis. In industrial applications, videoscopes are often used for visual inspection of the internal surfaces, or inner diameter (I.D.) of tubes, piping, cylinders and castings, and for examination of engines and structures, and quality assurance testing. Videoscopes can also be found in security applications, most notably airport security.Read user Insights about Videoscopes
Related Products & Services
Borescopes are optical inspection tools that consist of a rigid or flexible tube, an eyepiece on one end, and an objective lens on the other. They use optical relay components to transfer images of bores and cylinders from a tip to an eyepiece.
Fiberscopes are flexible borescopes that use fiber optic technology, an eyepiece at one end, and a lens at the other to inspect bores and cavities. They house fiber optic bundles in a flexible tube that allows users to change the viewing angle or navigate curved paths.