High-Sensitivity Cameras For Spectral Imaging Across Many Wavelengths

Reveal The Characteristics Of A Material

Capture detailed spectral data with industrial cameras for advanced imaging applications. Enhance material inspection, quality control, and scientific analysis.

Challenges & Trends

Capturing Images At Different Wavelengths

To capture detailed spectral data from an object or scene, the sensor system must deliver consistently high quantum efficiency across the full spectral range. Choosing the most relevant spectral bands for the specific material analysis application can be a challenge.

Coping With High Data Volume

Hyperspectral images can contain hundreds of spectral bands, leading to massive data sizes (gigabytes per image). Storing and transmitting such data efficiently, especially in real-time systems (e.g., UAVs), is difficult.

Balancing Costs With The Performance Requirements

High-resolution spectral sensors are expensive. Depending on how many wavelength ranges are required, either hyperspectral or multispectral imaging must be considered to reduce overall costs.

Applications

Material Identification And Classification

By analyzing their unique spectral signatures, different materials can be accurately classified, from mapping minerals in geology to sorting waste for efficient recycling.

Medical Imaging

Spectral imaging is used in medical applications such as cancer detection based on their unique spectral signatures, tissue analysis, and disease diagnosis.

Hyperspectral Imaging (HSI)

Each pixel contains a complete spectrum, and all images together build an HSI image data cube, allowing for detailed analysis and identification of materials.

Multispectral Imaging (MSI)

If the spectral features of an object to be identified are known, it is often sufficient to apply less spectral bands to reduce system costs and to speed-up processes.

Technical Requirements

High but steady quantum efficiency over the entire spectral range for multi spectral imaging
Homogenous intensity distribution of pixels detecting the same spectral band
Multiple-ROI selection for push-broom line scanning HSI systems, to reduce data sizes and ease the signal processing
High resolution for multi-spectral imaging systems using filters reducing the overall resolution of the spectral image
Thermoelectric cooling (TECs) to reduce dark current induced noise and to keep SNR high

The Right Camera

Goldeye CL-008 XSWIR 1.9 TEC2

Goldeye CL-008 XSWIR 1.9 TEC2 with FPA 320 × 256 | 30 µm | Extended Range InGaAs runs 344 frames per second at 0.1 MP resolution.

Sensitive from 900 nm to 1,900 nm
CameraLink Interface
Single-stage thermo-electric cooler (TEC)
Low-noise, high linearity and dynamic range
See Goldeye CL camera series

Goldeye G-034 XSWIR 2.2 TEC2

Goldeye G-034 XSWIR 2.2 TEC2 with FPA 636 × 508 | 15 µm | Extended Range InGaAs runs 303 frames per second at 0.3 MP resolution.

Sensitive from 900 nm to 2,200 nm
GigE Vision Interface
Dual-stage thermo-electric cooler (TEC2)
Low-noise, high linearity and dynamic range
See Goldeye G camera series

Alvium U-030 VSWIR

Alvium U-030 VSWIR with Sony IMX991 | InGaAs runs 249 frames per second at 0.3 MP resolution.

Sensitive from 400 nm to 1,700 nm
USB3 Vision Interface
Designed for low-power or even battery-powered systems
Bareboard variants available
See Alvium U camera series

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