Why do I need a motorized focus lens?

If your application requires observing targets at different distances (e.g., a PTZ camera looking at a gate 50m away, then a fence 500m away), a motorized lens is essential to refocus for maximum sharpness.

Yes, the ZV-LERV series supports "One-Push Auto Focus" via the web interface or API, locking onto the sharpest image in milliseconds.

ZV-LERV075HC | 640x512 12μm Uncooled 75mm Motorized Lens IP Thermal Imaging Core | Ethernet/USB/CVBS/SDI

640 75mm Motorized Focus Thermal Imaging Module | 640x512 VGA Core

ZV-LERV075HC | Active Focus | Radar-Linked | Built for Extremes

Sharp at 1km+, Even in Harsh Climates

Unlike athermalised lenses, the 75mm motorised optic features Active Focus—actively correcting thermal drift during extreme temperature shifts (e.g., desert day/night cycles). Delivers pixel-sharp imagery at 1km+ ranges across deserts, highlands, and coastal environments.

<1s Response for Radar Slew-to-Cue

Rapid focus acquisition (<1 second) enables seamless integration with radar tracking systems. Instant visual confirmation upon cue—critical for border surveillance, maritime domain awareness, and perimeter protection.

Key Specifications

Sensor: 640 × 512, 12μm uncooled VOx | NETD ≤35 mK @ F1.0
Lens: 75mm motorised | FOV 5.9° × 4.7°
Output: 1920 × 1080 @ 25/30fps | Network stream + CVBS | Multi-palette display
Interfaces: TTL, RS485, audio I/O, alarm I/O (reserved)
Protocols: ONVIF, VISCA, PELCO-D/P compliant

Engineered for Uncompromising Conditions

From Arabian deserts to Siberian tundra and tropical coastlines—reliable performance where thermal stability matters most.

Specifications

Camera
Detector type	Uncooled VOx Microbolometer
Effective Pixels	640 × 512
Pixel Pitch	12μm
Spectral Band	8 ～ 14μm
NETD	≤35 mK @F1.0, 300K
Lens
Focal Length	75 mm, Motorized Lens
Aperture Range	F1.0
FOV	5.9°×4.7°(Wide ~ Tele)
Focusing Range	75mm: 5M—∞
Sealing	IP67(front of lens)
Network
Video Compression	H.265 / H.264
Protocols	ONVIF (PROFILE S, PROFILE G), SDK, TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, RTP, RTSP, RTCP, NTP, SMTP, SNMP, IPv6
Intelligent Detection	Tripwire, Intrusion, Loitering, etc.
Smart Intelligence (Optional)	Human/Vehicle/Ship classification，Fire detection
Image
Max. Resolution	30/25fps (1280 × 1024)
Image Settings	Saturation, Brightness, Contrast, Sharpness, etc.
Digital Zoom	4×
Pseudo Colours	10 Modes Available
Image Enhancement	Support
Image Filtering	Support
Dead Pixel Correction	Support
Noise Reduction	Support
Mirror	Support
Interface
Ethernet	100M Network Port
Analogue	CVBS
Digital	BT.656 (Optional)
Serial Port	1 channel TTL 3.3V, 1 channel RS485
Functional Interface	Alarm (1 in / 1 out), audio (1 in / 1 out), USB
Storage	Micro SD / SDHC / SDXC card (Up to 512G), NAS (NFS, SMB / CIFS supported)
General
Operating Conditions	-30℃ ~ 60℃; Humidity ≤ 95% (non-condensing)
Power Supply	12V DC ± 10%
Power Consumption	Max: 5W
Dimensions (Unit: mm)	Φ86*139.4mm
Weight	504g

Distance Analysis

Based on EN 62676-4:2015 | The calculation results are for reference only.

	Detection (MAX. Distance: m)	Recognition (MAX. Distance: m)	Identification (MAX. Distance: m)
UAVs (0.2m)	416.7	104.2	52.1
Human (0.75m)	1562.5	390.6	195.3
Vehicle (2.0m)	4166.7	1041.7	520.8
Vessel (6.0m)	12500.0	3125.0	1562.5

FAQs

Q: Why do I need a motorized focus lens?
- A: If your application requires observing targets at different distances (e.g., a PTZ camera looking at a gate 50m away, then a fence 500m away), a motorized lens is essential to refocus for maximum sharpness.
Q: Can it auto-focus?
- A: Yes, the ZV-LERV series supports "One-Push Auto Focus" via the web interface or API, locking onto the sharpest image in milliseconds.