Cobra OCT Spectrometers

SD-OCT spectrometers for lab research, OEM and system integrators

Cobra OCT Spectrometer Series

SD-OCT spectrometers for lab research, OEM & system integrators

The best images start with the right spectrometer, and we offer a comprehensive range of models with speeds up to 250 kHz to find your perfect fit. Choose the center wavelength and bandwidth for the depth and resolution you need, then select the camera, speed and connection right for your application (camera link or USB 3.0). Our proprietary low roll-off design delivers the best images possible.

With seven product families, covering the Vis, 800nm and SWIR spectral ranges, we have an expansive range of pre-configured SD-OCT spectrometers inspired by our customers’ unique application needs.

OCT Spectrometer Products

Cobra 1600 OCT Spectrometers

As the first commercially available off-the-shelf 1600 nm OCT spectrometer, the Cobra 1600 gives you access to an optical window with enhanced depth penetration and high contrast with high axial resolution, compatible with readily available fiberoptic components.

Models Available – 1450-1690 nm (240 nm bandwidth)

Key Benefit – Used when 1300nm doesn’t offer high enough contrast in highly scattering materials

Cobra 1300 OCT Spectrometers

Our industry leading Cobra SWIR spectrometer reduces the tradeoff between imaging depth and clarity using a proprietary high throughput design, thus maximizing the quality of data from features at greater depths and larger scattering angles.

Models Available – 950-1690 nm (73-500 nm bandwidths)

Key Benefit – Deep tissue imaging

Cobra 1050 OCT Spectrometers

Based on the Cobra S opt-mechanical design, the Cobra 1050 spectrometer allows you to image diverse structures in scattering media – for the same spectral bandwidth, you can penetrate deeper than at 800 nm with a better resolution than 1300 nm.

Models Available – 1000-1110 nm (110 nm bandwidth)

Key Benefit – Versatility between benefits of 800nm and 1300nm optical designs

Cobra OEM OCT Spectrometer

Cobra OEM OCT spectrometer modules simplify your system development and ensure clear, consistent, detailed images in volume. These compact, lightweight units have been designed for ease of integration and durability, and are supported by OCT-specific SDKs.

Models Available – 750 – 930 nm (90-180 nm bandwidths)

Key Benefit – Compact, lightweight design without performance degradation

Cobra-D 800 Series

Allowing you to access imagining depths from 6 to 14mm, the Cobra-D OCT spectrometer is the deepest imaging depth commercially available spectrometer. These OEM ready, robust, high-resolution units have been designed for ease of integration and durability, and are supported by our OCT-specific SDKs to reduce your time to market.

Models Available – 800-880 nm (21-80 nm bandwidths)

Key Benefit – The deepest commercially imaging depth spectrometer in a robust, compact design

Cobra VIS OCT Spectrometer

Access the benefits of visible OCT with the Cobra VIS. It has been designed with all the benefits of our flagship Cobra-S spectrometer for high-resolution, high-speed imaging at visible wavelengths spanning 400-700 nm.

Models Available – 400-700 nm (80-200 nm bandwidths)

Key Benefit – Optimized for blood oxygenation mapping

Cobra-S 800 Series

The worlds largest selling SD-OCT spectrometer for lab research, the Cobra-S 800 spectrometer series makes spectral domain OCT faster and easier than ever before. You can trust our unique optical design, based around our patented HD gratings to deliver the clearest OCT images on the market, allowing you to focus on your cutting edge research with confidence.

Models Available – 650-950 nm (60-300 nm bandwidths)

Key Benefit – Largest range of imaging depth and axial resolution spectrometers on the market available with a choice of cameras to fit your budget

Features & Benefits

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High sensitivity OCT spectrometer design based on transmissive VPH grating
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Unique optical design resulting in superior SNR and deeper image clarity
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Excellent roll-off performance
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Minimal polarization dependence
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Robust, compact design
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Multiple camera options to optimize configuration for each application

Cobra OCT spectrometers can be customized for a variety of applications. These spectrometers can achieve imaging depths of over 14mm, at imaging resolution below 2 µm, with spectral width greater than 500 nm and spectral resolution below 0.02nm. Cameras options include e2v Octoplus and Sensors Unlimited.

Choice of Wavelength

Widest range of commercially available SD-OCT spectrometers

The best images start with the right spectrometer, and we offer a comprehensive range of wavelength options with speeds up to 250 kHz to find your perfect fit.

The center wavelength (λc) and spectrometer bandwidth (Δλ) determine axial resolution (δλ= ), whilst the bandwidth along with the number of camera pixels (N) impacts the imaging depth (dmax= ) in air (reduced by sample n).

Roll-off: Sensitivity Loss with Depth

In OCT, the loss of sensitivity with increasing imaging depth is known as roll-off, referring to the gradual decay in sensitivity as depth increases. This effect mainly results from reduced fidelity in the detected interference pattern. Each spectrometer pixel detects a small range of wavelengths rather than a single wavelength, whereas ideal interference requires measurement at an infinitely narrow wavelength.

Roll-off is further amplified by spectral spreading, where light from one wavelength spreads to neighboring pixels due to the spectrometer’s finite resolution. While the first limitation is fundamental, the second can be reduced through careful optical design. Additionally, crosstalk between detector pixels—an inherent camera property—also contributes to roll-off, making detector selection particularly important for OCT spectrometer design.