Compare Model Drawings, CAD & Specs Availability Price
New 680451-001
LightIR 10-135mm f/3.6
LightIR 10-135mm f/3.6, High Durability
New 680451-002
LightIR 10-135mm f/3.6
LightIR 10-135mm f/3.6, Hard Carbon

HFOV [deg]

WFOV (10mm)

Pitch 640x512
10 µm 37.0º

NFOV (135mm)

Pitch 640x512
10 µm 2.67º


  • Type
    Continuous Zoom
  • Focal Length
  • F/#
  • Avg.Trns.
    >87% (HD) / ≥80% HC)
  • Cold Stop FPA Distance
  • Cold Stop Clear Aperture
  • Back Focal Length
    ≥17mm in air
  • Minimum Focus Range
  • Nuc (by defocus)
    Blur to 7mm diameter
  • Focus Mechanism
    Motorized. Adjustable
  • Focus Time
    <1 sec.
  • Zoom Mechanism
    <4 sec.
  • Weight
  • Dimensions
  • Drive Voltage
  • Current Consumption
    < 0.5A average, 1.0A peak
  • Communication Interface
  • Operating Temperature Range
    -32ºC to +75ºC
  • Storage Temperature Range
    -54ºC to +85ºC
  • Sealing
    IP67 front lens only
  • Wavelength Region


LightIR 10-135mm 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)

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