long wave infrared manual focus lens LWIR LENS

long wave infrared manual focus lens LWIR LENS

The focusing zoom lens can change or adjust the focal length within a certain range, so as to obtain different wide and narrow field of view; the manual zoom lens can change the shooting range by manually changing the focal length without changing the shooting distance; we provide high-quality High-precision medium and long wave manual zoom lens, we can also accept the customized service.

Project Specification
Application Long-wave infrared uncooled detector
Focal Length 50mm
F/# 1.0
Circular FOV 12.4°(H) × 9.3°(V) × 15.5°(D)
Spectral Range 8–12μm
Focus Type Manual Focusing
BFL (Back Focal Length) 18.22mm
Mount Type M34×0.75
Detector Compatibility 640×480-17μm
Coating DLC/AR
Storage Temperature -60℃ ~ +80℃
Operation Temperature -40℃ ~ +60℃
Seal Protection IP67

Key Features:

  • LWIR-Optimized Design: Tuned for 8–12μm spectral range, ideal for thermal cameras, night vision, and temperature measurement systems.
  • Fast F1.0 Aperture: Maximizes light gathering for high-sensitivity thermal imaging, even in low-contrast scenes.
  • Precision Optics: DLC/AR coated surfaces reduce reflection and improve durability, with a 50mm focal length and 18.22mm back focal length for optimal performance with 640×480-17μm detectors.
  • IP67 Sealed Housing: Dustproof and waterproof design, suitable for outdoor and industrial applications.
  • Wide Operating Temperature Range: -40℃ to +60℃ operating range, with storage tolerance down to -60℃.
  • M34×0.75 Mount: Standard interface for easy integration with thermal camera systems.
  • Manual Focus: Adjustable focus for precise thermal imaging at varying distances.

Our infrared lens are mainly used in electric power monitoring, maritime monitoring, petroleum and petrochemical, metallurgical manufacturing, coal mine safety, airport inspection and quarantine, Oilfield monitoring and scientific research, railway testing, urban security monitoring, border monitoring, highway monitoring, forest fire prevention, fire protection and other industries.


Product Detail

Product Tags

Long wave infrared hand tuner lens

The focusing zoom lens can change or adjust the focal length within a certain range, so as to obtain different wide and narrow field of view; the manual zoom lens can change the shooting range by manually changing the focal length without changing the shooting distance; we provide high-quality High-precision medium and long wave manual zoom lens, we can also accept the customized service.

long wave infrared manual focus lens LWIR LENS








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    Wavelength has been focused on providing high precision optical products for 20 years