Changchun Zhongyou Precision Zoom Optics

120 mm diameter 48× zoom 1200 mm near-infrared motorized zoom lens

Near-infrared military high zoom ultra-long focal length: 48×1200 mm zoom lens

Model: SK120/48X-1200NIR

Spectral transmission peak: 700nm-1100nm

Focal Length Range: f25mm - 1200mm

Image size: Φ12.9mm (adapted to 1/1.2" sensor)

Maximum resolution: 800 × ten thousand pixels

Unique focus mode: motorized focus/auto focus/fixed focus

Overall dimensions: length 472mm× width 175mm× height 139mm

Product details

120mm diameter 48× zoom 1200mm near-infrared motorized zoom lens technical specifications

I. Product Model

Model: SK120/48X-1200NIR

Name: 120mm diameter 48× zoom 1200mm near-infrared motorized zoom lens

Data Release Date: July 1, 2026

II. Main Optical Specifications

Focal Length Range (mm): f25 - 1200

Zoom ratio: 48×

Image size: Φ12.9mm (adapted to 1/1.2" sensor)

Relative aperture: F4.8 (wide-angle end) - F10 (telephoto end)

Spectral response: 700nm - 1100nm

Spectral transmission peak: 700nm-1100nm

III. Imaging performance indicators

Pixel definition: ≥2.5μm

Maximum resolution: 800 × ten thousand pixels (based on 1/1.2" image sensor format)

Optical axis stability: ≥4 pixels (calculated according to 4μm pixels)

IV. Control system

Zoom mode: motorized zoom/preset zoom

Zoom time:-

Focus mode: motorized focus/auto focus/fixed focus

Focus time:-

Back focus adjustment function: ±0.5 mm precision adjustment

Numerical feedback mode: magnetically encoded numerical feedback

Feedback accuracy: ±5%

Power supply: DC12V,<10W

Data interface: RS422 full-duplex communication

V. Structural design

Mechanical interface: standard C interface (supports customized interface)

Overall dimensions (mm): including bracket: 472×175×139

Weight (kg): ≤7.5 (including drive mechanism)

VI. Environmental Specifications

Impact resistance standard: GJB150.18A-2009 standard

Anti-vibration standard: GJB150.16A-2009 standard

Working temperature: -45℃ - +60℃

VII. Optional Functions

Filter system: 2/3/4 filter electric switching

Technical support

Contact person: Dong You

Phone/WeChat: 13331697285

E-mail: 312282332@qq.com

120 series 1200mm lens size chart