Introduction
Three-lens endoscope camera modules are easy to misunderstand.
Many customers see "three lenses" and assume the module will automatically solve every viewing problem. In real OEM projects, the result depends on the actual optical layout, working distance, lighting, host compatibility and mechanical structure.
SF-SJT720 is a D7.9 USB endoscope camera module with a three-lens structure. It uses an OV9734 1MP sensor, supports YUV / MJPEG output, includes a 2+6pcs LED arrangement, lists 80°×3 FOV, and supports a 20–60mm focusing range.
This article explains how customers should evaluate this type of module before sample approval.
Start from the Inspection Workflow
Before choosing SF-SJT720, customers should answer:
Does the operator need to see forward, side or multiple directions?
Is the target on a pipe wall or inside a cavity?
Will the probe rotate during use?
Does the user need continuous multi-direction awareness?
Is the working distance stable?
Is the environment dry or wet?
These questions decide whether a three-lens structure is useful.
If the application only needs a simple front-view image, a single-lens module may be easier and more cost-effective.
Product Overview
Confirmed product information includes:
USB output
D7.9 diameter
1MP OV9734 sensor
ALL integrated type
YUV / MJPEG format
2+6pcs LED arrangement
Plastic lens
80°×3 FOV listed
20–60mm focusing range
IP67: No
Dimming: No
Type-A connection
Three-lens structure
Output resolution and frame rate are not clearly listed in the catalog, so they should be confirmed before final specification claims.
Customer Pain Point 1: "Three Lenses Help, but Only If the Viewing Direction Matches the Task"
The three-lens structure should be evaluated according to the inspection target.
It may help when the target appears on multiple surfaces or when the operator needs broader directional awareness.
It may not help if the final device only needs one fixed front-view image.
Customers should test the module in the real direction of use, not only by checking whether the image appears on screen.
Customer Pain Point 2: "The Lighting May Not Be Balanced Across All Views"
Lighting is more complex in a three-lens module than in a single-lens camera.
The catalog lists 2+6pcs LEDs, but the practical result depends on the final structure and target surface.
Customers should test:
Whether all useful viewing areas are lit
Whether some areas are too bright
Whether some areas are too dark
Whether pipe walls reflect light
Whether the lens directions receive uneven light
Because dimming is No, this test is especially important.
Customer Pain Point 3: "20–60mm Must Be Checked for Every Viewing Direction"
A three-lens camera may observe different surfaces at different distances.
For example, a side wall may be closer than a forward target.
The listed focusing range is 20–60mm, so customers should measure the distance from each useful lens direction to the actual target surface.
If one direction is outside the focus range, that part of the image may not meet expectations.
Customer Pain Point 4: "The Product Is Not IP67"
SF-SJT720 is marked IP67 No.
This does not mean the module cannot be used in a protected final device, but it should not be sold as a waterproof probe.
For wet pipe inspection, cleaning or liquid exposure, the OEM team should discuss sealing design or select an IP67-supported alternative.
Customer Pain Point 5: "Type-A Does Not Mean Every Host Will Work Automatically"
The model lists Type-A connection.
This can support USB-based evaluation, but host compatibility still depends on:
Operating system
Viewer software
USB video support
Power supply
Cable routing
YUV / MJPEG handling
Customers should test the module with the intended host, not only a convenient test computer.
Best-Fit Project Types
SF-SJT720 is more suitable for:
Dry pipe inspection tools
Multi-direction cavity observation
Equipment internal inspection
Borescope devices needing more viewing awareness
Maintenance tools where side surfaces matter
OEM inspection devices where a single lens is not enough
It is less suitable for waterproof inspection, high-resolution documentation, AI defect recognition or applications needing confirmed frame-rate claims.
Sample Evaluation Checklist
Before approving SF-SJT720, test:
Actual three-lens viewing directions
Target visibility in each direction
Working distance from each lens to target
LED brightness and reflection
80°×3 coverage
Host compatibility
Image format behavior
Mechanical fit
Need for waterproof protection
User inspection workflow
RFQ Checklist
Provide:
Application scenario
Target direction
Cavity diameter
Surface material
Working distance for each viewing direction
Need for dry or wet use
Lighting requirement
Host device
USB software environment
Mechanical drawing
Sample quantity
Expected production volume
Conclusion
SF-SJT720 is valuable when the customer needs a three-lens USB endoscope camera module for multi-direction close-range visual inspection.
The project should not be approved only because it has three lenses. It should be approved only after confirming viewing direction, lighting behavior, 20–60mm focus distance, Type-A host compatibility and non-IP67 limitations.
CTA
Evaluating a three-lens endoscope camera for your inspection tool?
Send your viewing direction, cavity structure, target distance and host system details to SincereFull. We can help check whether SF-SJT720 is the right direction.
