An industrial borescope is a device used to inspect the insides of machine bores and passages, usually for maintenance and product quality control. The scopes have a handle and viewer at one end with a protruding optical tube that may be either rigid or flexible, and that easily inserts into bores.
The optical tube usually consists of two relays: one relay for the image and a second as a light source. At the insertion end of the optical tube is a lens. Industrial borescope manufacturers typically produce borescopes with one of the following four lens types:
1. Achromatic doublet, for bores of at least 5mm in diameter (no maximum).
2. Fused quartz fibers, for ultra-tiny bores and suitable for medical endoscopes.
3. Gradient index-reliable, which makes for a high quality image in small- to medium-sized bores.
4. Rod lens industrial borescopes, which produce a bright image.
Locate quality, functional industrial borescopes for saleFirst off, look for a borescope that works for your bore sizes. The main factor that determines the minimum size bore a scope will work for is the diameter of the optical tube. Also, how deep are your bores? Get a scope with enough working length. Lastly, how accessible are the bores you want to inspect, and are there any special shapes or parameters? Should you be thinking rigid, or is flexible worth the extra costs?
Find industrial borescope suppliers that carry borescopes with the right tip type for youTip type can be a little tricky. The field of view (FOV) is the size of the area imaged, usually between 50 and 100 degrees. Direction of view (DOV) can be straight on down the bore, or 90 degrees, which is called direct viewing. Forward oblique is a somewhat angled view between straight on and to the side, or 0 to 90 degrees. This is a good compromise between insertion navigation ease and detailed inspection. Retro DOV is backward or even adjustable. If they are published, pay attention to focus distances as well.
Search out an industrial borescope or industrial endoscope for rentHigh quality borescopes and endoscopes are not cheap. If you don't regularly need this type of inspection equipment, renting is a viable option. A drawback is that your product selection will be considerably smaller.
- Lens types do make a big difference, but overall design and quality is important as well. Don't base your choice of industrial borescopes solely on technology types.