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LD-MIR640-15F700

20X Continuous Zoom Infrared Thermal Camera

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Product Introduction

The MWIR continuous zoom thermal camera consists of a large zoom ratio continuous zoom lens and a high-sensitivity imaging detection component. The lens has a focal length range of 22mm to 700mm, and an optical zoom ratio of 30x. It employs a compact optical design and precision structural design, with special structural processing technology, high-precision optical-mechanical assembly techniques, and advanced servo control technology used during production. The imaging detection component has a resolution of 640x512@15μm and utilizes low-noise, high-sensitivity imaging technology. It features intelligent image processing algorithms such as adaptive non-uniformity correction, noise filtering, wide dynamic range image enhancement, and automatic light adjustment. It is characterized by its small size, lightweight, long focal length, long-range capability, large zoom ratio, high optical axis alignment accuracy, and clear imaging throughout the zoom range. The imaging detection component has excellent environmental adaptability, capable of providing clear and stable imaging for extended periods in extreme conditions such as high and low temperatures.


The large zoom ratio continuous zoom infrared thermal camera can be used in applications such as low-altitude reconnaissance, targeting design, coastal and border defense, key site protection, and target range testing.

Product Features

◆  Compact structure, small size, lightweight, long focal length, and long-range viewing.

◆  High optical axis alignment consistency , less than 2 pixels.

◆  30x optical zoom ratio.

◆  Exceptional environmental adaptability, capable of providing clear imaging for extended periods in both high and low-temperature environments.

Technical Indicators


Model NumberLD-MIR640-15F700
PerformanceResolution640x512
F/#F4
Spectral Range3.7μm~4.8μm
Cooler TypeStirling
Focal Length22mm~700mm
FOV24.0ºx19.3º~0.78ºx0.63º
FOV Switch Time≤8s
Output Accuracy≤2%
Optical Axis Consistency≤2 pixel
Optical Axis Repeatability≤1 pixel
Optical Axis StabilityVibration-induced front-to-back NFOV optical axis stability error ≤ 2 pixels
Focus Range

Wide: 5m~∞;Narrow: 100m~∞

MRTD≤300mK
NETD≤30mK(75%FOV,time domain)
Auto-focus Time≤3s
Startup Time at Normal Temperature≤7min
External SyncActive negative pulse falling edge, RS422 level standard
Weight≤9.5kg
Power SupplyDC25V~DC30V
Typical Power Consumption≤25W
Max.Power Consumption≤80W

Environmental Adaptability

Operating Temperature-45ºC~+70ºC
Storage Temperature-55ºC~+70ºC
Operating RangeUnder environmental conditions of 20±5°C temperature, 70±5% relative humidity, and visibility ≥15 km, with a target-to-background temperature difference of 3K - 5K, the detection distance for a 2.3m×2.3m target ≥ 25 km, and the recognition distance ≥ 16 km

Imaging Effect