Changchun Zhongyou Precision Zoom Optics

Short-wave infrared minimal lightweight::20Times500mm zoom lens

Model: SK40/20-500SWIR   

Adaptation sensor:IMX991   IMX990

Spectral transmission range:400nm-1700nm

Focal Length Range: f25mm - 500mm

Image Format: φ16.6mm

Maximum resolution:1200 × ten thousand pixels

Unique focus mode: Fixed Focus

Dimensions:  L 197mm× W  80mm× H  80mm

Main features and advantages

Military use · Scientific research · Lightweight · Compact · 1200 million definition · 4K definition · 2K definition · Broad spectrum · No chromatic aberration · Multispectral · Impact resistance · Fixed focus · High coaxiality · Standardization · Serialization · Dataization · Support customization · Nationwide production · Mature and reliable

I. Product Model

SK40/20-500SWIR   

II. Main Optical Specifications

Focal Length Range: f25mm – 500mm

Zoom ratio: 20×

Image size: φ16.6mm (adapted to 1″ sensor)

Relative aperture: F7.1 (wide-angle end) – F13.3 (telephoto end)

Spectral transmission range: 400nm-1700nm

III. Imaging performance indicators

Pixel definition: ≥3.05μm

Maximum resolution: 1200 × ten thousand pixels (based on 1″ image sensor format)

Optical axis stability: ≥3 pixels (calculated according to 4μm pixels)

IV. Control system

Zoom mode: motorized zoom/preset zoom

Focus mode: motorized focus/auto focus/fixed focus

Back focus adjustment function: ±4 mm precision adjustment

Numerical feedback mode: magnetically encoded numerical feedback

Feedback accuracy: ±5%

Power supply: DC12V,<10W

V. Structural design

Mechanical interface: standard C interface (supports customized interface)

Overall dimensions: length 197mm× width 80mm× height 80mm

Overall machine weight: > 0.95kg (including drive mechanism)

VI. Environmental Specifications

Impact resistance standard: GJB150.18A – 2009 standard

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

Operating temperature: -45°C – +60°C

VII. Optional Functions

Filter system: 2/3/4 filter switching (electric drive)

Data communication interface: controlled by RS422 protocol

 Technical support: Dong You Telephone/WeChat 13331697285 E-mail:312282332@qq.com    

Data Release Date: July 1, 2026