Description
Maximize optical precision in dynamic lighting with our industrial-grade 5MP 15-30mm C-mount varifocal lens. Masterfully engineered for large-format 2/3″ image sensors, this high-resolution zoom lens provides a versatile 15-30mm telephoto range with a targeted 34° to 18° horizontal field of view. Integrating an ultra-bright F1.4 large aperture, responsive DC auto iris, and advanced IR corrected lens technology, it guarantees exceptional geometric fidelity with distortion under 1%, delivering crystal-clear images from daytime glare to infrared night illumination.
Key Product Highlights
- Flexible 15-30mm Telephoto Zoom: Offers seamless adjustment between a 34° mid-range overview and a focused 18° telephoto frame, allowing precise on-site target framing.
- Virtually Distortion-Free Optics (<1%): Keeps optical distortion under 1% across the entire zoom range, ensuring superb geometric linearity for metrology and automated inspection.
- Advanced DC Auto Iris & F1.4 Aperture: The massive F1.4 opening floods the sensor with light, while the automated DC iris adjusts instantly to shifting, high-contrast outdoor sun.
- Seamless IR-Corrected Day/Night Tracking: Specialized multi-coatings eliminate focus shift when transitioning between visible light and active infrared night vision, maintaining crisp 5MP clarity 24/7.
Detailed Specifications
| Parameter | Specification |
|---|---|
| Image Format | 2/3″ (Highly compatible with 1/1.8″, 1/2″, 1/2.8″, etc.) |
| Focal Length | 15-30mm |
| Horizontal F.O.V. | 34° ~ 18° |
| Resolution | 5 Megapixel |
| Aperture | F1.4 |
| Optical Distortion | < 1% |
| Mount Type | C Mount |
| B.F.L. (Back Focal Length) | 11.05 ~ 9.15mm |
| Iris Type | DC Auto Iris |
| Focus Control | Manual |
| Zoom Control | Manual |
| M.O.D. (Min. Object Distance) | 0.2m |
| Infrared Technology | IR Corrected |
This product is certified by RoHS and ISO9001 quality management system, supports third-party testing, and complies with EU and domestic security equipment access standards, ensuring reliable quality and full compliance.
Applications & Compatible Equipment
This professional varifocal day&night lens is custom-built for high-end industrial automation, intelligent transit setups, and wide-perimeter tracking. It serves as an elite ITS lens for electronic toll plazas, multi-lane speed compliance, and multi-lane license plate recognition (LPR/ANPR) where lighting drops instantly at night. Furthermore, its pixel-perfect 5MP clarity and tight close-up focus make it an exceptional machine vision lens for automated optical inspection (AOI), long-distance packaging validation, logistics cargo scanning, and robotic vision stations requiring compact C-mount lenses with automated exposure control.
Compatible Equipment List:
- Sensors: Optimized for premium 2/3″ sensors and fully backward compatible with 1/1.8″, 1/2″, and 1/2.8″ high-density CMOS imaging chips.
- Industrial & Security Cameras: Universally fits C-mount industrial GigE/USB3.0 cameras, specialized ANPR camera modules, and professional HD box surveillance systems.
- Mainstream Brands: Perfectly matches high-performance smart imaging hardware from Basler, FLIR, Hikvision, Dahua, Axis, and IDS.
- Iris Control: Outfitted with a standard industrial DC-drive auto iris cable connection for automatic camera-board lens adjustment.
“Designed for high-precision factory automation, intelligent traffic systems, and low-distortion telephoto surveillance applications.”
Frequently Asked Questions
- Q: Why is “<1% Distortion” remarkable for a 15-30mm varifocal lens?
- A: Varifocal zoom lenses typically suffer from severe barrel or pincushion distortion as the focal length changes. Keeping distortion under 1% classifies this model as a professional low distortion lens, ensuring shapes and measurements stay geometrically true.
- Q: How does the DC Auto Iris system benefit industrial or outdoor cameras?
- A: An auto iris lens automatically optimizes the aperture blades using signals from the camera. In outdoor traffic setups or factories with shifting glass reflections, it instantly stops down to prevent image burnout and opens wide to F1.4 under dim night lighting.
- Q: Can I use this C-mount lens on a CS-mount camera?
- A: Yes, but you must use a standard 5mm C-to-CS mount adapter ring. Since a C-mount lens requires a longer back focal distance, adding the adapter allows it to focus correctly on a CS-mount sensor housing.
- Q: What is the benefit of an IR corrected lens during 24/7 operations?
- A: Visible light and Infrared light focus at different optical points. Standard optics go blurry when night-vision IR lamps click on. This IR corrected lens targets both wavelengths onto the exact same focal plane, keeping night footage perfectly crisp.
- Q: How do the manual focus and zoom rings lock during machine operation?
- A: The lens barrel is equipped with dedicated industrial thumb locking screws. Once you manually dial the zoom (15-30mm) and set the focal sharpness during calibration, tightening these screws prevents settings drift from heavy machinery vibrations.
- Q: What is the Minimum Object Distance (M.O.D.) for this lens?
- A: The M.O.D. is an impressive 0.2 meters (20cm / approx. 8 inches). This remarkably close focus allows the lens to perform detailed macro inspection on manufacturing lines even when utilizing the 30mm telephoto focal length.
