25mm Motorized Industrial Lens JOS823002520A, C-Mount, 80mm-1000mm Working Distance, IPRAS Passive Autofocus ROI Tracking for Automated Machine Vision

Built around integrated closed-loop stepper drive hardware, this 25mm motorized industrial lens electronically manipulates internal optical groups to alter focus and iris openings. Compatible with the IPRAS passive autofocus architecture for randomly positioned components, it delivers instant autofocus trigger and continuous ROI target tracking for parts with varying Z-axis elevations.

This optic leverages motor-actuated optical movement to achieve fine focus calibration, supported by tuned autofocus algorithms built for variable-depth machine vision deployments. System integrators can remotely set focus and iris values via USB or RS-485 communication from host controllers. It can be integrated into the IPRAS framework to run fully autonomous inspection workflows without on-site manual tuning. 

Key Specifications

· Focal Length: 25 mm

· Maximum Aperture: F2.0 (motorized adjustable iris)

· Mount Interface: Standard C-mount

· Supported Sensor Format: up to 2/3" (Φ11 mm)

· Maximum Imaging Resolution: 10 MP

· Minimum Working Distance: 80 mm

· Motorized Focus Tuning Range: 80 mm ~ 1000 mm

· Magnification Coverage: 0.0263× ~ 0.3348×

· Mechanical Back Focal Length: 13.5–19.45 mm

· Filter Thread: M27 × 0.5

· Communication Interfaces: USB 2.0, RS-485

Core Technical Advantages

1. Adjustable Magnification Across Broad Working Range: Electronic focus spans 80 mm to 1000 mm. This single lens delivers variable optical magnification from 0.0263× up to 0.3348×, removing the requirement to reposition camera hardware for different target distances.

2. IPRAS-enabled ROI Autofocus Tracking: Paired with the IPRAS passive autofocus platform, it supports instant autofocus activation and sustained closed-loop ROI tracking. It excels on production lines where part height fluctuates unpredictably as items travel along the conveyor.

3. Dual-mode Industrial Control via USB / RS-485: Dual communication ports allow two operation modes. Users can send encoder positioning commands directly from host PCs, or enable fully automatic autofocus by linking to the IPRAS system, compatible with industrial PCs and PLC hardware.

4. Encoder Closed-loop Focus Stabilization: Rotary encoder closed-loop motor control establishes consistent mapping between working distance and encoder readings, securing sub-millimeter scale repeatability for focus positioning.

5. Minimal Optical Distortion: Typical geometric distortion<0.1% 2="" over="" the="" full="">

6. Robust Industrial Thermal Design: Supports 10MP image capture and stable continuous operation within -20 ℃ ~ +60 ℃ ambient range, built to withstand factory workshop thermal conditions for long-cycle inspection jobs.

Representative Application Domains

1. Randomly Stacked Part Inspection: Accommodate inconsistent workpiece heights on unstructured conveyor paths. The IPRAS system maintains live focus lock without physically relocating the camera assembly.

2. PCB and Micro-component Quality Verification: Rapid adaptive focus response for populated circuit boards and miniature electronic assemblies with uneven Z-height, retaining crisp feature outlines and steady defect detection performance.

3. Robot-assisted Visual Positioning: Persistent ROI tracking during robotic pick-and-place cycles with changing target depth, holding optimal focus through every motion phase of the handling routine.

4. Multi-frame Focus Stacking: Acquire sequential image captures at incremental encoder steps, compatible with software-based EDOF (Extended Depth of Field) reconstruction workflows.

5. Automated Inline Metrology Inspection: Produces sharp, blur-free imagery for parts with variable heights moving on production lines, suited for high-speed AOI and automated dimensional validation.

Operational Guidelines & Precautions

· Working Distance Boundaries: Valid motorized focus range is 80 mm ~ 1000 mm. Reliable focus cannot be achieved below 80 mm; optical performance will degrade outside this defined working interval.

· Mechanical Mounting: Standard C-mount interface with 1"-32UN camera thread. Ensure coaxial alignment between lens optical axis and camera sensor plane at installation.

· Environmental Limits: Operate only within rated temperature range of -20 ℃ ~ +60 ℃. Avoid environments with condensation, relative humidity >85%, mechanical shock and persistent vibration to protect encoder integrity and autofocus stability.

· No Unauthorized Disassembly: Optical assemblies, gear trains and calibration parameters are pre-calibrated at factory. Unauthorized disassembly voids product warranty and can result in irreversible hardware damage.

· Accessory & Power Notes: Use only original cables, driver boards and supporting software. Improper wiring or incorrect voltage input may permanently damage the lens unit.

· Power-on Origin Calibration: Execute origin homing prior to activating IPRAS autofocus to synchronize encoder data and guarantee accurate focus positioning.

· Mechanical Handling Warning: Never manually twist the front lens barrel while motorized focus is active, to avoid gear wear and transmission system failure.

· ROI Configuration Tips: Define ROI bounding boxes on critical target features; avoid regions dominated by high-contrast backgrounds to reduce unintended autofocus triggers.