Description
Introducing our ultra-compact 4.2mm F2.8 M12 ultra-short telephoto pinhole lens, purpose-built for zero-clearance hardware embedding and intermediate-range covert surveillance applications. Shuttering standard optical limits, this specialized short-TTL pinhole board lens features a record-breaking 11mm Total Track Length (TTL). Delivering a tight, concentrated 64° horizontal field of view and optimized for a 0.3m standard minimum object distance (M.O.D.), it captures highly natural, identity-verified megapixel video of distant subjects through microscopic panel openings, making it the premier choice for ultra-thin smart intercoms, secure cash drawers, and slim commercial kiosks.
Product Highlights
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- Record-Breaking 11mm Short TTL: The most compressed axial profile in its class, resolving extreme mechanical spacing conflicts inside ultra-slim product chassis and thin metallic faceplates.
- 4.2mm Precise Target Spotlighting: The specialized 4.2mm fixed focal length restricts the horizontal frame to a tight 64° perspective, acting like an invisible window that pulls intermediate targets closer while filtering out background clutter.
- Flawless Zero-Distortion Optics: Highly calibrated to suppress aggressive edge bending, keeping facial features and ambient environments perfectly linear to heavily assist local AI identification algorithms.
- Micro-Cone Needle Silhouette: Built with a highly tapered conical front tip, ensuring the heavy optical body remains entirely hidden behind the panel plane for absolute hidden surveillance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Image Format | 1/3″ |
| Focal Length | 4.2mm (Miniature Telephoto Design) |
| Field of View (F.O.V.) | Diagonal 83° / Horizontal 64° |
| Resolution | Megapixel (MP) |
| Aperture | F2.8 (Fixed Iris, Optimized Depth of Field) |
| Mount Type | M12 X 0.5 (Standard Micro Board Mount) |
| Focus Control | Manual |
| Zoom Control | Fixed |
| Total Track Length (TTL) | 11 mm (Extreme Low-Profile Layout) |
| Minimum Object Distance (M.O.D.) | 0.3 m (Standard Intermediate Range) |
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 & Device Compatibility
Core Application Scenarios
This industrial-grade 4.2mm ultra-short pinhole lens is explicitly engineered for intermediate-range environmental logging, commercial terminal tracking, and high-security discrete entryways. Offering a highly flat 64-degree horizontal perspective with a standard 0.3m focus range, it excels as the primary optical sensor for ultra-slim home smart video doorbells, automated bank cash-drawers, and slim secure ticketing machines where capturing a crisp, undistorted portrait of a user standing 1 to 2 meters away is required, but the space behind the outer shell is restricted to millimeters. In factory automation and machine vision lens setups, its flat 11mm form factor allows it to be embedded inside thin metallic equipment rack doors or safety valves, monitoring automated conveyor operations through micro-holes while remaining completely safe from external mechanical friction.
Compatible Device List
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- Perfectly optimized for high-sensitivity 1/3-inch CMOS image sensors (including Sony, OmniVision, and SmartSens series).
- Direct fit for ultra-short M12 hidden camera modules, micro pocket-sized IPC boards, and Tuya-powered ultra-thin smart doorbells.
- Ideal for integration into custom 工业镜头 (industrial lens) enclosures, smart safety lockers, and automated retail kiosk housings.
- Fully supports factory customization for dual-band pass filters (650nm IR cut / 850nm / 940nm IR pass) to facilitate true invisible infrared nighttime illumination.
“Designed for ultra-short enclosure terminal security and intermediate-range micro pinhole surveillance applications.”
Frequently Asked Questions
Q: What is the technical advantage of this 4.2mm lens over a standard 3.7mm pinhole lens?
A: A standard 3.7mm pinhole lens offers a wider 70° horizontal view, which can make people standing a few meters away look small. This 4.2mm pinhole lens narrows the view to 64°, acting like an invisible mini telescope. It pulls intermediate targets closer and concentrates the sensor’s pixels onto a smaller area, capturing sharper facial features or clothing details without changing the 11mm ultra-thin lens thickness.
A: A standard 3.7mm pinhole lens offers a wider 70° horizontal view, which can make people standing a few meters away look small. This 4.2mm pinhole lens narrows the view to 64°, acting like an invisible mini telescope. It pulls intermediate targets closer and concentrates the sensor’s pixels onto a smaller area, capturing sharper facial features or clothing details without changing the 11mm ultra-thin lens thickness.
Q: Why choose an F2.8 aperture and 0.3m M.O.D. for this low-profile lens?
A: The F2.8 iris and 0.3m minimum object distance are optimized to extend the lens’s Depth of Field (DoF). In smart doorbells or kiosk installations, this ensures that visitors standing at various distances from the hidden micro-aperture will remain crisply in focus, providing maximum tolerance for manual focus adjustments.
A: The F2.8 iris and 0.3m minimum object distance are optimized to extend the lens’s Depth of Field (DoF). In smart doorbells or kiosk installations, this ensures that visitors standing at various distances from the hidden micro-aperture will remain crisply in focus, providing maximum tolerance for manual focus adjustments.
Q: Will this 4.2mm lens cause any dark corners (vignetting) on a 1/3″ sensor?
A: Not at all. Despite the hyper-compressed 11mm physical profile, the optical circle is meticulously calibrated to fully cover the active area of 1/3″ image format sensors, ensuring uniform edge-to-edge brightness and stable contrast.
A: Not at all. Despite the hyper-compressed 11mm physical profile, the optical circle is meticulously calibrated to fully cover the active area of 1/3″ image format sensors, ensuring uniform edge-to-edge brightness and stable contrast.
Q: Is the focus on this micro M12 pinhole lens adjustable?
A: Yes. It features a manual focus mechanism. By rotating the lens within its thread on the M12 mount board, you can adjust the focus for targets ranging from 0.3 meters away to infinity, then lock it securely using a standard M12 retaining collar.
A: Yes. It features a manual focus mechanism. By rotating the lens within its thread on the M12 mount board, you can adjust the focus for targets ranging from 0.3 meters away to infinity, then lock it securely using a standard M12 retaining collar.
Q: Can we order this pinhole lens with built-in 940nm IR-pass filtering?
A: Yes. We offer comprehensive OEM customization. We can factory-install specific 850nm or 940nm IR filters to match your invisible infrared night-vision setups for true undercover operations.
A: Yes. We offer comprehensive OEM customization. We can factory-install specific 850nm or 940nm IR filters to match your invisible infrared night-vision setups for true undercover operations.
