ThermTec Ventus 635L

State-of-the-art thermal imaging and night optics for hunting

With the ThermTec Ventus 635L, hunters receive a powerful 5-in-1 observation system that combines thermal imaging technology, 4K optics, IR night vision, and laser rangefinder in one device. Designed for demanding hunting grounds, this high-end observation device delivers razor-sharp images even in the most challenging light and weather conditions – from early identification to accurate distance measurement.

Perfect for hunting during the day, twilight, and night

Especially in hunting situations, every piece of information counts. The Ventus 635L combines a highly sensitive thermal imaging sensor (NETD < 15 mK) with a powerful 4K-CMOS optic and switchable IR illumination (850 nm / 940 nm). This allows you to reliably detect game – even in fog, rain, or complete darkness.

• Detection range: up to 1,800 m – ideal for large hunting grounds
• Laser rangefinder: up to 1,000 m with ±1 m accuracy
• Night vision range: up to 400 m (850 nm) or 350 m (940 nm)
• Thermal image resolution: 640 × 512 pixels with 12 µm pixel pitch
• Frame rate: 50 Hz for smooth observation

This way, you maintain an overview even during long sits or when scanning at night.

4K Ultra Clarity & Thermal Super Resolution

The integrated 12-megapixel CMOS sensor delivers razor-sharp images on the AMOLED display with 1600 x 1200 pixels. In combination with the AI-supported Thermal Super Resolution, particularly detailed thermal images are created – perfect for safe targeting.

• Thermal image magnification: 2.6x – 10.4x (4x digital)
• Optical magnification: 4x – 16x
• AMOLED display: 0.5 inches
• 6 color palettes for different terrain conditions

Ergonomic for long use in the field

The Ventus 635L has been specifically designed for comfortable observation. Thanks to its ergonomic design and dual focus wheels, the device can be easily operated with one hand – ideal for longer stalking or sitting sessions.

Additional benefits for hunters:

• Adjustable eye relief: 60 – 72 mm
• Diopter adjustment: ±5 D
• Rubberized, non-slip surface – secure grip even in cold conditions
• Weight: only 825 g
• Robust housing with IP67 protection class
• Operating temperature: -20 °C to +50 °C

Intelligent Features for Modern Wildlife Observation

In addition to image quality, the device impresses with numerous features for hunting everyday life:

• Heat Track – automatic tracking of heat sources
• PIP (Picture-in-Picture) for precise identification
• Digital Compass & Azimuth Display
• Photo and Video Recording with Audio
• 64 GB Internal Storage
• OSD Recording & Local Album
• TSR Algorithm for optimized image stability
• EIS Image Stabilization

This allows you to document wildlife observations or analyze situations later at your leisure.

Efficient Energy Supply in the Field

The Ventus 635L is designed for long missions:

• 2x replaceable 18650 Li-Ion batteries
• Up to 6 hours of runtime
• Proximity sensor automatically turns off the display when the device is not in use
• Power supply and data transfer via USB-C

Technical Data at a Glance

• Thermal Lens Ø (mm) 35
  
• Lens System F0.9
  
• Thermal Field of View Horizontal/ Vertical (°) 12.5x10.1
  
• Thermal Field of View Width (m) at 100 m 21.9
  
• Thermal Optical Magnification 2.6x-10.4x (4x)
  
• Night Vision Digital Lens Ø (mm) 50
  
• Lens System F1.0
  
• Night Vision Field of View Horizontal/ Vertical (°) 8.8x7.0
  
• Night Vision Field of View Width (m) at 100 m 15.4
  
• Night Vision Optical Magnification 3.7x-14.8x (4x)
  
• Frame Rate (Hz) 50
  
• Pixel Size (µm) 12
  
• NETD Value (@25°C), F#=1.0 < 15 mK
  
• Battery Life (h) without WLAN 6
  
• Resolution of the Microbolometer (Pixels) 640x512
  
• Sensor Type VOx
  
• Display Resolution (Pixels) 1600 x 1200 AMOLED
• IR Illuminator 850 nm + 940 nm Switchable Yes
  
• Range 850 nm 400 m
  
• Range 940 nm 350 m
  
• Diopter Adjustment Yes
  
• Color Palettes 6
• Bi-Spectrum Image Fusion Yes
  
• 1/3" Progressive Scan CMOS Sensor Yes
• 4K Ultra CMOS Resolution 3535x3536
  
• Detection Distance / Recognition (Deer) 1,800 m / 200 m
  
• WLAN (Wi-Fi) Yes
  


• WLAN (Hotspot) Yes
  
• Laser rangefinder Yes
  
• Screen auto-off Yes
• Hotspot marking function - Contour Yes
  
• Playback (Photos/Videos) Yes
• GPS No
  
• Recording function Yes
  
• Manual lens focus Yes
  
• Internal memory (GB) 64
• Infrared proximity sensor Yes
  
• Protection class (IEC 60529 Standard) IP67
  
• Tripod thread 1/4" Yes
  
• Weight (g) 825
  
• Dimensions LxWxH (mm) 164x127x73
• Operating temperature- 20 °C / + 50 °C
• Interface USB-C
  
• Battery type 2 x 18650
  
• Replaceable batteries Yes
  
• Supply voltage (V) 3.7
  
• External power supply USB (V) 5

Scope of delivery:

• Binocular Ventus 650L
• IR spotlight switchable between 850nm/940nm
• Bino carrying case
• Objective lens cover
• USB-C charging cable
• Neck strap
• 4 x 18650 battery
• Charger with capacity indicator
• Anti-dust cloth
• Operating instructions