What does XSWIR (eXtended SWIR sensitivity) do for me?

Visible imaging, infrared imaging (IR), short wave IR (SWIR), Extended SWIR (XSWIR) – it’s an alphabet soup of acronyms and their correlating concepts. Let’s briefly review each type of imaging to set the stage for the new kid in town – XSWIR – to better understand what each has to offer.

Visible imaging is the shorthand name for machine vision applications that are in the same portion of the spectral range as human vision, from about 380 – 700 nm. The field of machine vision initially developed largely in the visible space, partly because it’s easiest to conceptualize innovation in a familar space, but also due to the happy coincidence that CCD and CMOS sensors are photosensitive in the same portion of the spectrum as human sight!

Infrared imaging (IR), including near-infrared (NIR), focus on wavelengths in the range above 700 nm. NIR is roughly from 750 nm – 1400 nm. Applications include spectroscopy, hardwood and wood pulp analysis, biomedicine, and more.

Short-wave IR (SWIR) applications have tended to fall in the range 950 nm – 1700 nm. Applications include quality-control of electronics boards, plastic bottle-contents inspection, fruit inspection, and more. The camera sensor is typically based not on Silicon (Si) but rather Indium gallium arsenide (InGaAs) , and one typically requires special lensing.

Then there is MWIR (3 – 5 um) and LWIR (9 – 15 um). You can guess what M and L stand for by now. MWIR and LWIR are interesting in their own right, but beyond the scope of this short piece.

We draw your attention to a newish development in SWIR, namely Extended SWIR, or simply XSWIR. Some use the term eSWIR instead – it’s all so new there isn’t a dominant acronym yet as we write this – we’ll persist with XSWIR for purposes of this piece. XSWIR pushes the upper limits of SWIR beyond what earlier SWIR technologies could realize.

As mentioned above, SWIR cameras, lenses, and the systems built on such components tended to concentrate on applications with wavelengths in the range 950 – 1700 nm. XSWIR technologies can now push the right end of the response curve to 1900 nm and even 2200 nm.

Big deal, a few hundred more nanometers of responsivity, who cares? Those doing any of the following may care a lot:

  • Spectral imaging
  • Laser beam profiling
  • Life science research
  • Surveillance
  • Art inspection

A camera taking XSWIR to 1900 nm responsivity is Allied Vision Technologies’ Goldeye G-034 XSWIR 1.9. AVT’s sister camera the Goldeye G-034 XSWIR 2.2 achieves even more responsivity up to 2200 nm.

Allied Vision Goldeye XSWIR camera with lens

The Goldeye family was already known for robust design and ease of use, making SWIR accessible. Of particular note in the new Goldeye XSWIR 1.9 and 2.2 models are:

  • Extended SWIR wavelength detection beyond 1,700 nm
  • Multi-ROI selection to speed up processes, especially useful in spectrometer-based sorting and recycling applications
  • Industrial grade solution for an attractive price

Tell us about your intended application – we love to guide customers to the optimal solution.

1st Vision’s sales engineers have over 100 years of combined experience to assist in your camera and components selection.  With a large portfolio of lensescablesNIC card and industrial computers, we can provide a full vision solution!

New AVT Alvium 1800 VSWIR cameras

Visible to SWIR sensors that cover both the visible and short wave infrared spectrum, are now available, affordable, and well-suited for a range of imaging applications.  Previously one might have needed two different sensors – and cameras – but Allied Vision’s Alvium 1800 U/C-030 and Alvium 1800 U/C-130 take advantage of Sony’s innovative InGaAs SenSWIR sensor technology to provide coverage across the visible to SWIR spectrum with the Sony IMX991.

Alvium VSWIR with MIPI CSI-2 and USB3 Vision interfaces

These Alvium 1800 VSWIR cameras can be used from 400 nm to 1700 nm, and are the smallest industrial-grade, uncooled SWIR core modules on the market.  With their compact design, low power consumption, and light weight, they are the ideal solution for compact OEM systems used in embedded and machine vision applications. 

The 030 models use a ¼”sensor with framerates to 223 fps, while the 130 models use a ½” sensor with framerates to 119 fps.  Both are available with USB3 Vision or MIPI CSI-2 interfaces, in housed, open, or board-level configurations. 

Contact us at 1stVision with a brief idea of your application, and we will contact you to discuss camera options. support and / or pricing.

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1st Vision’s sales engineers have an average of 20 years experience to assist in your camera selection.  Representing the largest portfolio of industry leading brands in imaging components, we can help you design the optimal vision solution for your application.

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1st Vision is the most experienced distributor in the U.S. of machine vision cameras, lenses, frame grabbers, cables, lighting, and software in the industry.

Computar ViSWIR Visible + SWIR lenses

1stVision is pleased to make available two new lens series from Computar: both the ViSWIR HYPER / APO Lens Series, and the VISWIR Lite Series. Traditionally, applications landed in either the visible or the SWIR range, so components tended to be optimized for one or the other. The new lens series are designed to perform well with for both visible and SWIR, enabling cost-effective and performant imaging systems for a range of applications.

ViSWIR Hyper / Multi-Spectral Lens Series were created for the latest Vis-SWIR imaging sensors, the IMX990/IMX991 SenSWIR, currently found in the new Allied Vision Goldeye G-130. The series was recognized as a Gold Honoree by Vision Systems Design in 2021:

With fully corrected focus shift in visible and SWIR range (400nm-1,700nm), spectral imaging is achievable with a single sensor camera by simply syncing the lighting. Per Sony, “the IMX990/IMX991 top indium-phosphorus (InP*2) layer inevitably absorbs some visible light, but applying Sony SWIR sensor technology makes this layer thinner, so that more light reaches the underlying InGaAs layer. The sensors have high quantum efficiency even in visible wavelengths. This enables broad imaging of wavelengths from 0.4 μm to 1.7 μm. A single camera equipped with the sensor can now cover both visible light and the SWIR spectrum, which previously required separate cameras. This results in lower system costs. Image processing is also less intensive, which accelerates inspection.”

With ViSWIR HYPER-APO, it is unnecessary to adjust focus for different wavelengths or to keep the high resolution from short to long working distances. The focus shift is reduced at any wavelength and any working distance, making the series ideal for multiple applications, including machine vision, UAV, and remote sensing.

Computar ViSWIR HYPER-APO lens series

Since diverse substances respond to differing wavelengths, one can use such characteristics as the basis for machine vision applications for materials identification, sorting, packing, quality control, etc. To understand the value of these lenses, see below for an example of conventional lenses that cannot retain focus across different wavelengths:

Conventional lenses only focus in specific wavelengths

Now see images across a wide range of wavelengths, with the award winning Computar lens, that retain focus:

Diverse materials under diverse lighting – in focus at each wavelength.
The same lens may be used effectively in diverse applications.

Also new from Computar is the VisSWIR Lite series, providing:

— High transmission from Visible to SWIR (400-1700nm) range
— Reasonable cost performance for narrow band imaging
— Compact design
Key features of Computar VisSWIR Lite seriesComputer

Computer ViSWIR Lite lens series

Which to select? APO or Lite series?

Contact 1stVision for support and / or pricing.

Contact us to talk to an expert!Give us some brief idea of your application and we will contact you to discuss.

1st Vision’s sales engineers have an average of 20 years experience to assist in your camera selection.  Representing the largest portfolio of industry leading brands in imaging components, we can help you design the optimal vision solution for your application.

Allied Vision G-130 TEC1 SWIR Camera

1stVision is pleased to announce that we can obtain Allied Vision’s new G-130 TEC1 SWIR camera for our customers. Utilizing Sony’s innovative IMX990 sensor, based on their SenSWIR technology, the camera is responsive in both the visible as well as the short-wave infrared range, spanning from 400 – 1700nm.

AVT G-130 TEC1 SWIR camera

While there are a number of cameras that cover short-wave infrared (SWIR) alone, from 900 – 1700nm, this sensor’s responsivity down to 400nm in the visible range opens up applications possibilities not previously possible with a single sensor camera.

Besides the wide spectral range, the sensor uses small 5µm pixels, with high quantum efficiency, offering precise detection of details.

The Goldeye 130 with IMX990 1.3MP SXGA sensor can deliver 110fps with Camera Link interface, or 94fps with GigEVision interface. The camera is fan-less, using thermoelectric sensor cooling (TEC1), yielding a robust and compact design.

Contact 1stVision for support and / or pricing.

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Give us some brief idea of your application and we will contact you to discuss camera options.

1st Vision’s sales engineers have an average of 20 years experience to assist in your camera selection.  Representing the largest portfolio of industry leading brands in imaging components, we can help you design the optimal vision solution for your application.