Sensors Unlimited SU1024-LDH2 High-Speed InGaAs Line-Scan Camera for OCT and SWIR Imaging
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SU1024-LDH2 |
| Pricing | Upon Request |
Overview
The Sensors Unlimited SU1024-LDH2 is a high-performance, 1024-pixel InGaAs linear array camera engineered for demanding optical coherence tomography (OCT), spectroscopic imaging, and industrial machine vision applications in the short-wave infrared (SWIR) spectrum. Based on patented InGaAs photodiode technology, the SU1024-LDH2 delivers exceptional quantum efficiency (>70% at 1.05 µm and 1.31 µm), low read noise, and high dynamic range (>2300:1) across its operational wavelength band of 0.8–1.7 µm. Its core architecture employs integrate-while-read (IWR) acquisition mode—enabling continuous, distortion-free line capture at up to 91,911 lines per second (lps)—making it particularly suited for spectral-domain OCT (SD-OCT) systems operating at 1.04 µm (ophthalmic retinal imaging) or 1.31 µm (enhanced phase stability for Doppler and polarization-sensitive OCT). The camera’s compact, thermoelectrically stabilized housing minimizes thermal drift, ensuring long-term measurement repeatability required for clinical-grade and GLP-compliant imaging workflows.
Key Features
- 1024-element InGaAs linear sensor with 12-bit digitization and Base Camera Link® interface
- Maximum line rate: 91,911 lps under IWR mode, supporting real-time volumetric SD-OCT reconstruction
- Uniform quantum efficiency across critical OCT wavelengths: flat response at 1.05 µm and 1.31 µm
- Two interchangeable pixel aperture configurations: 500 µm height (optimized for SD-OCT spectrometer coupling) and 25 µm square (for high-temporal-resolution machine vision or PS-OCT)
- High dynamic range >2300:1 with >65 dB SNR (typical) and sub-electron read noise performance
- Integrated TE cooling for dark current suppression; stable operation over extended acquisition periods
- C- and F-mount adapter options available for flexible integration into spectrographs, OCT interferometers, or MV inspection platforms
Sample Compatibility & Compliance
The SU1024-LDH2 is compatible with standard SWIR optical train components including transmission gratings, off-axis parabolic mirrors, and fiber-coupled spectrometers. Its spectral response aligns with ASTM E131-22 (Standard Terminology Relating to Molecular Spectroscopy) and ISO 13694:2021 (Optics and photonics — Test methods for laser beam parameters — Beam widths, divergence angles and beam propagation ratios). For regulated medical imaging deployments, the camera supports traceable calibration protocols compliant with FDA 21 CFR Part 11 when integrated into validated OCT system architectures. It meets IEC 61000-6-3:2019 emission standards and operates within Class 1 laser safety requirements when used with approved SWIR illumination sources.
Software & Data Management
The SU1024-LDH2 is fully supported by Sensors Unlimited’s proprietary SDK (v4.2+), which provides low-level register access, programmable exposure timing, gain control, and ROI configuration via USB 2.0 or Camera Link frame grabbers. Third-party compatibility includes National Instruments LabVIEW™ (with Vision Acquisition Software), MATLAB® Image Acquisition Toolbox, and Python-based libraries (e.g., PyCameraLink). All acquired line data are timestamped with microsecond resolution and support HDF5 and TIFF export formats—enabling direct ingestion into OCT reconstruction pipelines (e.g., CUDA-accelerated Fourier-domain processing) or statistical process control (SPC) databases. Audit trails, user authentication, and electronic signature capabilities can be implemented through integration with enterprise-grade LIMS or QMS platforms adhering to ISO/IEC 17025:2017 requirements.
Applications
- Spectral-domain OCT: Retinal layer segmentation, optic nerve head analysis, choroidal vasculature mapping at 1.04 µm; phase-stable Doppler flow quantification and birefringence contrast in PS-OCT at 1.31 µm
- Time-resolved absorption/emission spectroscopy: Monitoring molecular vibrational transitions in combustion diagnostics, gas-phase reaction kinetics, and polymer degradation studies
- Industrial machine vision: Real-time defect detection on moving webs (e.g., lithium-ion battery electrode coating), semiconductor wafer inspection, and food sorting based on SWIR spectral signatures
- Process analytical technology (PAT): In-line monitoring of pharmaceutical tablet coating uniformity and moisture content using 1.45 µm water absorption bands
- Defense and surveillance: Covert active illumination imaging through obscurants (fog, smoke) and anti-counterfeiting verification of SWIR-responsive security inks
FAQ
What is the maximum usable frame rate for full 1024-pixel line acquisition?
The SU1024-LDH2 achieves 91,911 lps at 12-bit depth using Base Camera Link® with a compatible frame grabber (e.g., Teledyne DALSA CL-B series). Frame rate is dependent on host system bandwidth and buffer management.
Does the camera support external trigger synchronization?
Yes—TTL-compatible trigger input/output ports enable precise synchronization with swept-source lasers, galvanometric scanners, or conveyor encoders.
Is radiometric calibration provided with the unit?
Each camera ships with NIST-traceable responsivity curves (A/W vs. wavelength) and non-uniformity correction (NUC) coefficients pre-loaded in firmware.
Can the SU1024-LDH2 be operated without active cooling?
While functional at ambient temperature, uncooled operation increases dark current and reduces dynamic range; TE cooling is recommended for quantitative applications requiring <0.5% intensity drift over 30-minute acquisitions.
Which optical interfaces are natively supported?
The sensor features a standard 25-mm diameter C-mount flange; optional F-mount and SM1-threaded adapters are available for OEM integration into collimated beam paths or fiber-fed spectrometers.
