How To Find the Brightest Light Source for Your Borescope

How To Find the Brightest Light Source for Your Borescope

July 6, 2021

For most devices, a borescope specifically refers to the camera and optical array part of the device. The kind of borescope then determines the type of feed, and there are often a few options in terms of length, diameter, and specifications. Besides this, a light source is essential to provide the sensors with enough visibility while probing tight spaces. How to find the brightest light source for your borescope primarily depends on the device in use and the situation in which it will be used.

Choosing a Light Source for Your Borescope

The need for a light source depends on the make and model of the device. Certain handheld and compact units should—and often do—have a built-in independent light source. More advanced units use an LED projected light to couple with the design of the insertion feed. Rigid borescopes require a flashlight adaptor or external model directly down the barrel’s limited length. Fiber optics feeds use the light-carrying nature of fiber optic arrays to project light throughout the extent of the feed despite bends and curves in the wire. Video and fiber optic types generally use full-size external light sources that come in UV or standard LED varieties.

UV Light Sources

One of the most common applications for borescopes is in various nondestructive testing practices—namely, searching for areas of damage or casting flaws via fluorescent inks. Submersing or spraying an item in ink allows the liquid to penetrate deep into cracks and well-hidden marks in the shape or material of an object. With a borescope light source equipped with UV light, every nook and cranny is easily explored. Additionally, the UV light source will cause the ink to glow in an easy-to-spot color and thus clearly mark every flaw.

LED Light Sources

The standard for any borescope is a basic LED light source. Just like the UV light, they are commonly shaped like a traditional projector screen. The device connects into the feed to send light down and into the camera and surrounding space. The result is crisp and clear high-definition images, despite the small scale and typically darkened environments that borescopes generally probe. As long as the model parts are compatible, LED light sources are suitable for just about any borescope and type of inspecting work.

Mini Flashlight Adapters

How to find the brightest light source for your borescope ultimately comes down to the type of work it’s intended for. The final variety of light sources are those suited specifically for rigid type borescopes. Mini LED lights are ultra-bright despite their small size. While they’re not necessarily as bright as a full-scale external model, borescope flashlights are more than enough in most situations using standard rigid varieties. These adapters resemble a small but otherwise standard flashlight. The idea is to shine a beam of light down the barrel of the borescope, thus lighting up the light sensors and surrounding area. It’s a simple, lightweight, and affordable solution.