FEATURED INTEGRATED OPTICAL SYSTEM

Single-Lens Dual-Sensor Beam-Splitting Zoom Lens

One motorized zoom lens and a beam-splitting prism feed visible and short-wave infrared sensors at the same time, keeping both channels on one shared scene through the full zoom range.

MODEL: SK40/20X/F2-400
FOCAL RANGE: 20-400 mm
ZOOM: 20x
SPECTRUM: 400-1700 nm

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Single-lens dual-sensor imaging

Lens model: SK40/20X/F2-400
Channel: Visible + SWIR

01 / OPTICAL ARCHITECTURE

One optical path. Two synchronized channels.

A broadband zoom group forms the shared front optical path. The beam splitter then directs the image to dedicated visible and SWIR sensors, reducing duplicated optics while preserving channel-specific detection.

20-400 mm zoom lensBeam-splitting prism

Visible sensorSWIR sensor

02 / SYSTEM VALUE

Designed for compact dual-band integration

Synchronized field of view

Both channels observe the same scene as focal length changes.

Broadband correction

Optical correction spans 400-1700 nm across visible and SWIR bands.

Motorized control

Motorized zoom, preset zoom, autofocus and constant-focus operation.

System-ready interface

RS-422 control, magnetic position feedback and 12 V operation.

03 / SYNCHRONIZED IMAGING

Visible and SWIR imaging through the same zoom system

First-party comparison frames show both channels at short, medium and long focal positions. Captions are presented outside the source image.

Visible — short focal length / SWIR — short focal length — Visible — short focal lengthSWIR — short focal lengthView full-size image [+]

Visible — medium focal length / SWIR — medium focal length — Visible — medium focal lengthSWIR — medium focal lengthView full-size image [+]

Visible — long focal length / SWIR — long focal length — Visible — long focal lengthSWIR — long focal lengthView full-size image [+]

04 / FIELD EVIDENCE

108 km field observation example

The existing field record documents an observation from Penglai toward Laotieshan, Dalian, at approximately 108 km under reported 20 km visibility.

Field range depends on atmosphere, visibility, target properties, sensor configuration and complete system integration; this example is not a guaranteed range for every deployment.

108 km target imageView full-size image [+]

05 / DATA

Technical specifications

Item	Visible channel	SWIR channel
Focal range	20-400 mm	20-400 mm
Zoom ratio	20x	20x
Image circle	phi 13.3 mm	phi 13.3 mm
Relative aperture	F5.7-F10.7	F5.7-F10.7
Spectral response	400-1100 nm	1100-1700 nm
Pixel pitch	>= 2.45 um	>= 3.45 um
Maximum resolution	up to 12 MP	up to 5 MP
Zoom time	<= 5 s	<= 5 s
Autofocus time	<= 3 s	<= 3 s
Back-focus adjustment	+/- 0.5 mm	+/- 0.5 mm

Shared system

Power: DC 12 V, < 10 W
Control interface: RS-422 full duplex
Dimensions: 266 x 88 x 100 mm
Weight: < 2500 g
Operating temperature: -40 C to +60 C
Shock: GJB150.18A-2009
Vibration: GJB150.16A-2009

06 / INTEGRATION

Mechanical integration envelope

The complete assembly is specified at 266 x 88 x 100 mm and under 2.5 kg. The drawing is shown as an engineering integration reference.

Dimensional drawingView full-size image [+]

07 / CONTACT

Discuss your dual-band imaging requirement

Share your sensor format, control interface and operating environment so we can confirm the optical and mechanical configuration.

Phone / WeChat+86 133 3169 7285 WhatsApp+86 185 4310 2598 Emailxianglongduan1998@gmail.com