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New 680471
SWIR & NIR 25-250mm f/5.5 (NFOV) f/4.0 (WFOV)
SWIR & NIR continuous zoom lens, 25-250mm f/5.5 (NFOV) f/4 (WFOV)

HFOV [deg]

WFOV (25mm)

Pitch 320x240 480x384 640x512 1280x1024
15μ 11.0° 16.4° 21.7° NA
10μ 7.3° 11.0° 14.6° 28.7°
3.7° 5.5° 7.3° 14.6°

NFOV (250mm)

Pitch 320x240 480x384 640x512 1280x1024
15μ 1.1° 1.7° 2.2° NA
10μ 0.7° 1.1° 1.5° 2.9°
0.4° 0.6° 0.7° 1.5°


  • Type
    Continuous Zoom
  • Focal Length
  • F/#
  • Average Transmission
  • Back Focal Length
    34.47mm in air (±0.1)
  • Focus Mechanism
    Motorized. Adjustable
  • Focus Range
    WFOV:2m NFOV:20m
  • Focus Time
  • Weight
  • Minimum Focus Range
  • Dimensions
    Ø65mm x 244.1mm
  • Operating Temperature Range
    -32ºC to +75ºC
  • Storage Temperature Range
    -40ºC to +80ºC
  • Sealing
    IP67 front element only
  • Zoom Time
  • Communication Interface
    RS422 or RS232
  • Drive Voltage
  • Current Consumption
  • Wavelength Region


SWIR & NIR 25-250mm f/5.5 (NFOV) f/4.0 (WFOV) 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)

SWIR NIR 25-250mm f/5.5 (NFOV) f/4 (WFOV): Low-SWaP, Long-Range, Cont. Zoom for 5µm pixel detectors

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