How to Determine the Image Quality of an Industrial Borescope?

Evaluating the image quality of an industrial Borescope involves considering several key factors:

1. Resolution

Higher resolution means clearer images. Common specifications include:

480P (SD): Basic, but details may be blurry.

720P (HD): Suitable for general industrial inspections.

1080P (Full HD): Clearer details, ideal for precise inspections.

4K Ultra HD: The clearest, but requires higher data transmission capabilities.

● How to check: Review the device’s specs or test the sharpness of the image.

2. Field of View (FOV)

The field of view determines how much area is visible, typically between 60° to 120°:

Narrow FOV (<70°): Suitable for long-distance observation.

Medium FOV (70°-90°): Balanced detail and viewing area.

Wide FOV (90°-120°): Covers a larger area but may have edge distortion.

● How to check: See if the screen captures a large enough area without losing clarity.

3. Depth of Field (DOF)

The range where objects appear sharp and clear:

Short-focus (3mm-30mm): Good for inspecting tiny cracks.

Medium-focus (10mm-100mm): Suitable for most industrial scenarios.

Long-focus (50mm-∞): Good for distant viewing, but close-up images may appear blurry.

● How to check: Test image clarity at different distances.

4. Illumination and Brightness

Borescopes typically feature LED or fiber-optic light sources:

Adjustable LED lights: Prevent overexposure or underexposure.

Fiber-optic illumination: More uniform light, ideal for precise inspections.

Infrared/UV lighting: For special material inspections.

● How to check: Test in a dark environment to evaluate brightness and evenness.

5. Image Processing and Noise Reduction

Digital noise reduction enhances clarity in low-light conditions.

HDR (High Dynamic Range) improves details in both dark and bright areas.

Auto/manual focus: Ensures sharp images at various distances.

● How to check: Test image quality in both low-light and high-brightness environments.

6. Image Stability

Frame rate (FPS): 30FPS or higher for smooth video; below 20FPS may cause lag.

Anti-shake technology: Reduces blurriness from hand movement.

● How to check: Move the Borescope and observe if the image remains smooth and clear.

7. Recording and Storage Capabilities

Photo/video recording: Ensure it supports high-quality video (1080P or higher).

Storage formats: Check if it supports SD cards, internal storage, or WiFi transmission.

● How to check: Record and playback to ensure clear and detailed footage.

Summary: How to Test the Image Quality of an Industrial Borescope?

✔ Test resolution: Capture small objects and check edge clarity.
✔ Test depth of field: Observe objects at different distances.
✔ Test illumination: Inspect in dark environments.
✔ Test field of view: Ensure the camera captures a wide enough area.
✔ Test video smoothness: Move the scope and check for delays or lag.