Compare Model Drawings, CAD & Specs Availability Price
680533-001
FoldIR 40-450mm f/3.6
MWIR Continuous Zoom Lens, FOLDIR, 40-450 mm FL, f/3.6, High Durability
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 680533-001 FoldIR 40-450mm f/3.6 MWIR Continuous Zoom Lens, FOLDIR, 40-450 mm FL, f/3.6, High Durability
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680533-002
FoldIR 40-450mm f/3.6
MWIR Continuous Zoom Lens, FOLDIR, 40-450 mm FL, f/3.6, Hard Carbon
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 680533-002 FoldIR 40-450mm f/3.6 MWIR Continuous Zoom Lens, FOLDIR, 40-450 mm FL, f/3.6, Hard Carbon
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FoldIR 30-450mm f/3.4 Detection, Recognition & Identification (DRI) Range

WFOV (40mm)

  Format
Pitch 640x480
10 µm 8.9°

NFOV (450mm)

  Format
Pitch 640x480
10 µm 0.85°

Specifications

  • Focal Length
    40-450mm
  • F/#
    3.6
  • Avg.Trns.
    (3.4-4.2μm) 80% (HD) / 76% (HC)
  • Cold Stop FPA Distance
    12mm
  • Cold Stop Clear Aperture
    3.37mm
  • Minimum Focus Range
    50m(WFOV) 5m(NFOV)
  • Focus Mechanism
    Motorized
  • Focus Time
    ≤5.5 sec
  • Zoom Mechanism
    Motorized
  • Zoom Time
    <1 sec.
  • Weight
    1.85kg
  • Dimensions
    Ø165 x length 222mm
  • Drive Voltage
    12VDC
  • Current Consumption
    < 0.5A average, 1.0A peak
  • Communication Interface
    RS422
  • Operating Temperature Range
    -32ºC to +75ºC
  • Storage Temperature Range
    -54ºC to +85ºC
  • Sealing
    IP67 front lens only

Features

FoldIR 40-450mm f/3.6 Detection, Recognition & Identification (DRI) Range

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)

Resources

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