Views: 0 Author: Site Editor Publish Time: 2026-04-09 Origin: Site
Introduction
When you look through an endoscope camera, the first thing you notice is how much you can see. Some show a wide area; others zoom in on a small spot. That “how much” is called the field of view (FOV). For endoscope cameras used in medical diagnosis, industrial inspection, or plumbing, choosing the right FOV is critical. A too‑narrow view might miss defects; a too‑wide view can make details too small. At Sincere, we’ve been manufacturing cmos module camera solutions for over 30 years, including pipe inspection camera module and automotive inspection camera module designs. This article explains what FOV (also called View Angle) means and how to choose the best one.
What Is Field of View (View Angle)?
Field of view is the angular extent of the scene the camera captures, usually measured in degrees. The larger the angle, the more area you see. Typical View Angle values for endoscope cameras range from 70° (narrow) to 120° or even 180° (ultra‑wide/fisheye).
Why FOV Matters
Medical endoscopy: A wide FOV (90°–120°) lets a surgeon see more without moving the scope, reducing procedure time.
Automotive & pipe inspection: An automotive inspection camera module or pipe inspection camera module benefits from a wide FOV to cover more surface per insertion.
Ultra‑mini endoscopes: An ultra mini camera module (diameter <2mm) often has a slightly narrower FOV (70°–90°) due to lens size limits, but modern designs can still be effective.
How FOV Is Determined
FOV depends on:
Lens focal length: Shorter focal length = wider FOV.
Sensor size: For the same lens, a larger sensor gives a wider FOV.
Most endoscope cameras have a fixed FOV. Some advanced modules allow interchangeable tips, but that’s rare in ultra‑compact designs.
Typical FOV by Application
Application | Recommended View Angle | Reason |
|---|---|---|
Medical endoscopy | 90°–120° | Large area coverage |
Automotive engine inspection | 80°–100° | Balance of coverage and detail |
Pipe / sewer inspection | 100°–120° | See full pipe circumference |
Industrial turbine inspection | 70°–90° | Focus on specific features |
Ultra‑mini endoscope | 70°–90° | Physical lens limits |
Consumer USB endoscope | 90°–120° | Versatility |
The best camera module for your task will have an FOV matched to your working distance and target size.
Wide vs. Narrow FOV
Factor | Wide FOV (e.g., 120°) | Narrow FOV (e.g., 70°) |
|---|---|---|
Area coverage | Large | Small |
Detail on small objects | Less | More |
Distortion | Higher (barrel distortion) | Lower |
Best for | Exploring unknown cavities, large pipes | Detailed inspection of specific spots |
FOV and Distortion
Wide‑angle lenses often introduce barrel distortion (straight lines near edges look curved). In endoscopy, some distortion is acceptable because the goal is to see as much as possible. For measurement applications, lower distortion is preferred even if it means a slightly narrower FOV.
FOV in Different Module Types
Camera usb modules: Usually come with fixed wide‑angle lenses (90°–120°). Plug‑and‑play for general inspection.
CMOS module camera: FOV is a lens property. The same sensor can pair with different lenses for different FOVs.
Automotive inspection camera module: Moderate FOV (80°–100°) to see cylinder walls while keeping enough resolution for scratches.
Pipe inspection camera module: Very wide FOV (100°–120°) to see the entire inner circumference from the center.
Ultra mini camera module: 70°–90° FOV, sufficient for navigating narrow passages.
How to Choose the Right View Angle
Define working distance: At close range, a wide FOV covers more area; at long range, a narrower FOV gives better detail.
Consider target size: Large pipe or cavity → wide (100°–120°). Small weld → narrower (70°–80°).
Think about movement: A wide FOV reduces the need to move the scope in tight spaces.
Check distortion tolerance: For measurement, avoid extremely wide FOV unless distortion is corrected.
Test with a sample: The best way is to try a module on your actual target.
Sincere’s Endoscope Camera Modules
At Sincere, we manufacture endoscope camera modules with optimized FOV:
Best camera module: We help you select the optimal View Angle for your working distance and target.
Automotive inspection camera module: Wide to moderate FOV for engine and component inspection.
Camera usb modules: Plug‑and‑play endoscope cameras with 90°–120° FOV.
Cmos module camera: Precision‑matched lens and sensor for consistent FOV.
Pipe inspection camera module: Ultra‑wide FOV (100°–120°) for sewer and drain inspection.
Ultra mini camera module: Compact designs with 70°–90° FOV for tight spaces.
Our manufacturing includes Class 10/100 dust‑free facilities and Active Alignment (AA) to ensure consistent FOV across all units.
Summary
Field of view (View Angle) is the angular range an endoscope camera can see. It is determined by lens focal length and sensor size. Wide FOV (90°–120°) is best for exploring large areas, reducing scope movement, and pipe inspection. Narrower FOV (70°–80°) offers more detail for specific targets. Choosing the right FOV is essential for getting the best camera module for your medical, automotive, or pipe inspection application.
At Sincere, we offer custom View Angle options for cmos module camera‑based endoscope modules. Contact us to discuss your FOV requirements.
