Compare Model Drawings, CAD & Specs Availability Price
680311-001
SupIR 73.1mm f/1.05
LWIR 1-FOV Fixed Lens, SupIR, 73.1 mm Focal Length, f/1.05, High Durability, HD
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 680311-001 SupIR 73.1mm f/1.05 LWIR 1-FOV Fixed Lens, SupIR, 73.1 mm Focal Length, f/1.05, High Durability, HD
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680311-002
SupIR 73.1mm f/1.05
LWIR 1-FOV Fixed Lens, SupIR, 73.1 mm Focal Length, f/1.05, Hard Carbon, HD
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 680311-002 SupIR 73.1mm f/1.05 LWIR 1-FOV Fixed Lens, SupIR, 73.1 mm Focal Length, f/1.05, Hard Carbon, HD
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Format
Pitch 320x240 384x288 640x480 1024x768
17 µm 4.3° 5.0° 8.5°
12 µm 3.0° 3.6° 6.0° 9.55°
10 µm 2.5° 5.0° 7.98°

Specifications

  • Type
    Single Field of View
  • Focal Length
    73.1 mm
  • F/#
    1.05
  • Spectral Range
    8-12 µm
  • Back Focal Length
    24.68 mm in air
  • Focus Mechanism
    Fixed
  • Focus Range
    5 m to infinity
  • Depth of Field
    300 m to infinity
  • Operating Temperature Range
    -40°C to +80°C
  • Storage Temperature Range
    -54°C to +85°C
  • Sealing
    IP 67 front element only
  • HD Format
    Yes
  • Wavelength Region
    LWIR

Features

SupIR 73.1 mm f/1.05 Detection, Recognition & Identification (DRI) Range

* Assumptions: 50mK NETD (f/1.0) for LWIR uncooled detectors | 30Hz frame rate | 50% detection probability | 0.2km-1 atmospheric attenuation coefficient | human ΔT = 5°C | vehicle ΔT = 2°C

DRI ranges enable one to easily estimate the maximum range that an object can be either detected, recognized or identified. It is important to note that these estimates are based solely on geometrical parameters – the target size, distance, lens focal length and camera detector pixel size. Signal level, detector sensitivity, atmospheric conditions and other factors are not considered!

The calculations used here are based on the “Johnson Criteria”. According to the Johnson Criteria, the minimum resolution, pixels on target, required to achieve a 50% probability for an observer to discriminate an object are:

  • Detection: An object is present – 2 pixels on target (Lower Bar)
  • Recognition: discern the type of object, a human vs. a vehicle – 8 pixels on target (Middle Bar)
  • Identification: discern specific objects, a man vs. a woman, a car model – 12.8 pixels on target (Upper Bar)

High Performance Long Wave Focal Plane

Using advanced technologies, top-quality materials and unique coating techniques, together with innovative engineering and opto-mechanical designs, we have earned a reputation for excellent performance, durability and quality.

High-durability and Hard-carbon AR Coatings

Our highly abrasion-resistant, anti-reflective advanced optical coatings include several types of Hard Carbon coatings which provide maximum durability, energy transmission & minimal reflection. Our innovative coating technologies include:

  • Physical Vapor Deposition (PVD) – Thermal heating and electron gun
  • Ion Assisted Deposition (IAD) – Ion gun
  • Plasma Enhanced Chemical Vapor Deposition (PECVD) for DLC coatings

Passive Athermalized Lens Assembly

Our IR imaging lens assemblies incorporate passive athermalization of the lenses and opto-mechanical system to maintain the highest imaging performance over the full operating temperature range. We use advanced materials that enable unique athermalization properties and optomechanical designs that effectively compensate for optical variations over a wide temperature range.

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Resources

Application Notes

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Drawings & CAD

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