Views: 0 Author: Site Editor Publish Time: 2026-05-10 Origin: Site
In thin-pipeline endoscopy, precision mechanical cavity inspection, portable on-site inspection, and low-light close-range imaging, imaging systems often need to capture real-time high-definition, wide-angle, driver-free images within channels less than 3mm in diameter. Conventional endoscope probes are either too thick to enter, have narrow fields leading to missed defects, or require complex driver installation – hindering rapid deployment. Addressing these challenges, the 2.9mm micro USB endoscope module based on the OV2740 sensor (performance comparable to the OV9734 Sensor series) features 2MP (1080P) HD, 140° ultra-wide angle, 8–80mm macro focus, USB UVC driver-free, and a separate design, making it a professional solution that balances high image quality with ease of use. This article provides a clear selection framework from five dimensions – physical size, optical performance, interface protocol, structural design, and typical applications – while incorporating key terms such as endoscope camera module, 2MP Camera Module, usb2.0 endoscope camera, UVC Camera Module, OV9734 Sensor, Wide Angle Camera Module, Separate Endoscope, 1080P Camera Module, and IP67 Waterproof to help you precisely match high-definition inspection needs in confined spaces.
First step: Precisely measure the minimum inner diameter and bend radius of the target channel.
The probe diameter is only 2.9±0.15mm with a separate design (Separate Endoscope), where only the lens and sensor are at the front end, connected to the rear circuit via a 1.5-meter flexible cable (customizable diameter). The engineering significance:
Easily accesses thin pipes, micro-channels, precision equipment cavities, and natural body orifices with inner diameter ≥3.0mm, covering most narrow spaces in medical, electronics, and machinery fields.
The separate structure makes the front end extremely small and light, facilitating navigation through tortuous paths; the rear circuit can be placed away from the inspection area, suitable for handheld devices or fixed stations.
Compared to conventional endoscopes above 3.5mm, the 2.9mm extends the detectable range downward, solving the “0.5mm too thick to enter” problem.
When selecting, verify: Is the channel inner diameter ≥3.0mm? For sharp bends, evaluate the probe’s rigid section length (typically 5-8mm) and the cable’s bend radius. The module supports custom cable length and diameter to suit different deployment environments. For wet or liquid-splash scenarios, an IP67 Waterproof steel shell version is available.
Second step: Confirm working distance, field coverage, and detail resolution requirements.
The module incorporates the OV2740 CMOS image sensor, outputting 2MP (1920×1080) HD images, making it a high-performance choice among 1080P Camera Module and 2MP Camera Module products. Optical characteristics:
140° ultra-wide angle (characteristic of Wide Angle Camera Module): Extremely wide single-frame coverage – at 20mm working distance, it covers about 110mm width, greatly reducing probe movement and improving inspection efficiency.
8–80mm dedicated macro focus: Combined with 1.05mm focal length and F5.9 aperture, it precisely covers typical endoscopic working distances from ultra-close (8mm) to medium range (80mm), delivering clear images without frequent focusing.
2MP resolution clearly reveals 0.1mm-level micro-scratches, corrosion pits, welding spatter, etc., meeting quality control requirements in precision machinery and electronics manufacturing.
As an extreme version of Wide Angle Camera Module, this module is ideal for tasks requiring “wide field + high detail.” Note: The 140° wide angle may introduce slight barrel distortion at the edges, which is acceptable for qualitative observation and defect localization; for precision measurement, software correction can be applied. Compared to OV9734 Sensor solutions, the OV2740 offers advantages in dynamic range and low-light sensitivity.
Third step: Evaluate host platform and development efficiency.
This module uses a Micro USB 5P interface, incorporates the UVC standard protocol, and requires no driver installation – plug-and-play. As a usb2.0 endoscope camera and UVC Camera Module, key advantages:
Cross-platform compatibility: Automatically recognized by Windows, Linux, Android (with OTG), macOS, etc., allowing direct connection to laptops, tablets, or industrial PCs during field inspections.
Zero driver development: Significantly shortens product integration cycles, ideal for manufacturers needing rapid delivery.
LED fill light with adjustable brightness (via I2C or external PWM) adapts to completely dark or low-light environments.
When selecting, verify: Does the target host’s USB port provide sufficient power (5V/500mA is adequate)? For long-distance transmission (>5m), consider USB extenders or custom cables with signal boosters. The module includes integrated LED illumination, eliminating the need for external light sources.
Fourth step: Assess installation space and environmental risks.
The module adopts a Separate Endoscope design, separating the front end from the rear circuit via a 1.5-meter cable. Engineering value:
The front end is only 2.9mm diameter, allowing passage through extremely narrow channels; the rear circuit can be placed in a handgrip or control box for ergonomic handling.
Cable length and diameter are customizable to suit different inspection depths and routing requirements.
Optional IP67 Waterproof rating: Steel shell sealing provides dust protection and resistance to temporary immersion, suitable for wet pipes, outdoor inspections, and medical disinfection scenarios.
Note: The base version does not claim waterproofing. For liquid-contact applications, be sure to select the IP67 Waterproof custom version; for dry, clean environments, the standard steel shell version reduces cost.
Application Scenario | Recommended Configuration | Selection Rationale |
|---|---|---|
Thin-pipe (≥Φ3mm) internal corrosion/blockage inspection | 2.9mm probe + IP67 Waterproof + long cable | 2.9mm passes through narrow ports; 140° wide angle covers circumference in one frame; 1080P clearly shows defects |
Precision machinery gearbox/engine cavity non-disassembly inspection | Separate front end + dimmable LED | Separate Endoscope light and small; 8–80mm focus adapts to different depths; 2MP records wear patterns |
Portable handheld endoscope (maintenance/archaeology) | Standard 1.5m cable + USB direct to tablet | UVC Camera Module plug-and-play; 2MP meets field documentation; low power suits battery operation |
Low-light/dark cavity inspection (fuel tanks, blind pipes) | Adjustable LED + steel shell | Dimmable LED prevents overexposure on reflective metal; 140° wide angle reduces blind spots |
Electronic component internal solder joint/foreign object inspection | Fixed mount + external ring light | 2MP resolves tiny bridging; 8mm close focus enables near-probe inspection; integrates with automated vision systems |
The core value of the 2.9mm OV2740 2MP ultra-wide-angle separate endoscope module lies in combining the high detail of a 1080P Camera Module (also a 2MP Camera Module), the ultra-wide coverage of a Wide Angle Camera Module, the plug-and-play convenience of a UVC Camera Module, the flexible installation of a Separate Endoscope, and optional IP67 Waterproof protection – providing a cost-effective, easy-to-deploy high-definition vision tool for thin pipelines, precision cavities, and portable inspections. When selecting, prioritize three questions:
How narrow is the space? If inner diameter ≥3.0mm, the 2.9mm probe fits; if smaller, custom an even smaller diameter.
How wide a field is needed? For wide-area scanning, choose 140°; for more localized detail, a smaller wide angle may reduce distortion.
Is waterproofing or high reliability needed? For wet or liquid-contact environments, IP67 Waterproof is mandatory; for dry scenes, the standard steel shell version reduces cost.
As a manufacturer with over 30 years of optical imaging experience, SincereFirst not only supplies standard endoscope camera module products but also customizes probe diameter, cable length, LED brightness, and waterproof rating according to your inspection scenario. We recommend obtaining engineering samples before mass production and conducting accessibility, image clarity, and UVC compatibility tests in real pipes or cavities to ensure your selection is both scientifically sound and forward-looking.
