Sensors Unlimited SU1024-LDH High-Speed InGaAs Line-Scan Camera for OCT and SWIR Imaging
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SU1024-LDH |
| Pricing | Upon Request |
Overview
The Sensors Unlimited SU1024-LDH is a high-performance, linear InGaAs short-wave infrared (SWIR) line-scan camera engineered for demanding optical coherence tomography (OCT), spectroscopic, and industrial machine vision applications. Operating across a spectral range of 0.8–1.7 µm, it leverages a monolithic 1024-pixel InGaAs photodiode array fabricated on a proprietary low-dark-current substrate. Its core architecture implements integrate-while-read (IWR) acquisition—a synchronized integration and readout scheme that eliminates motion-induced smear and enables continuous high-speed scanning without frame latency. With a maximum line rate exceeding 46,000 lines per second (lps) at full 1024-pixel resolution, the SU1024-LDH delivers exceptional temporal resolution while maintaining >70 dB dynamic range and peak quantum efficiency above 80% in the 1.3–1.55 µm band—critical for depth-resolved SD-OCT signal fidelity and low-light NIR spectroscopy.
Key Features
- Monolithic 1024-element InGaAs linear sensor with pixel pitch of 25 µm and selectable aperture height (25 µm or 500 µm)
- Integrate-while-read (IWR) operation mode for artifact-free high-speed scanning and optimal signal-to-noise ratio
- 14-bit digitization output via Base Camera Link® interface, supporting deterministic timing and low-jitter trigger synchronization
- Low-noise analog front-end with programmable gain and offset, optimized for wide dynamic range (≥70 dB) and linearity (<0.5% INL)
- Compact, thermally stabilized housing with passive cooling; compatible with OEM integration into OCT interferometers and spectrometers
- Flexible optical interface options: C-mount, F-mount, and FD-mount adapter kits available for lens coupling and collimator alignment
Sample Compatibility & Compliance
The SU1024-LDH is designed for non-contact, label-free imaging of biological tissues, polymer films, semiconductor wafers, and fiber-optic components within the 800–1700 nm molecular vibration window. Its high quantum efficiency in the 1310 nm and 1550 nm OCT bands supports axial resolution down to ~5–7 µm in tissue-equivalent media. The camera meets electromagnetic compatibility requirements per FCC Part 15 Class A and CE EN 61326-1 for laboratory and industrial environments. While not a medical device itself, its performance characteristics align with ISO 13485-supported system integration workflows and support traceable calibration protocols required under GLP and GMP-compliant OCT system validation (e.g., ASTM F2703-22 for ophthalmic imaging systems).
Software & Data Management
The SU1024-LDH operates natively with standard Camera Link® SDKs (e.g., Matrox Imaging Library, Teledyne DALSA Sapera LT) and third-party OCT reconstruction frameworks including MATLAB-based OCTToolbox and Python-based PyOCT. Firmware supports hardware-triggered acquisition with sub-microsecond jitter, enabling precise synchronization with galvanometric scanners or swept-source lasers. All digital outputs include embedded timestamping and pixel-level metadata (exposure time, gain setting, temperature reading), facilitating audit-ready data provenance. When deployed in regulated environments, the camera’s deterministic I/O behavior and reproducible line-rate control support 21 CFR Part 11-compliant audit trails when integrated with validated host software platforms.
Applications
- Spectral-domain OCT (SD-OCT) systems for ophthalmology, dermatology, and endoscopic imaging
- Near-infrared (NIR) and short-wave infrared (SWIR) hyperspectral line-scan spectroscopy
- Real-time process monitoring in pharmaceutical tablet coating, food sorting, and polymer extrusion
- Fiber-optic component alignment and waveguide coupling verification
- Polarization-sensitive OCT (PS-OCT) using 25 µm square-pixel variant (SU1024-LDM)
- Time-resolved reflectometry and optical scatterometry in semiconductor metrology
FAQ
What is the maximum usable line rate for the SU1024-LDH at full 14-bit resolution?
The camera achieves ≥46,000 lps with full 1024-pixel readout and 14-bit digitization over Camera Link® Base configuration. Actual throughput depends on host frame grabber bandwidth and cable length.
Can the SU1024-LDH be used in polarization-sensitive OCT systems?
Yes—the SU1024-LDM variant features 25 µm × 25 µm square pixels optimized for PS-OCT beam splitting and dual-channel detection; the LDH variant supports standard SD-OCT with 500 µm tall pixels for enhanced light collection efficiency.
Is external cooling required for stable operation?
No—thermal stabilization is achieved via passive heatsinking; operating temperature range is 0–40 °C ambient, with internal temperature monitoring for drift compensation.
Does the camera support region-of-interest (ROI) readout to increase effective line rate?
Yes—subarray readout modes are supported via firmware commands, allowing configurable ROI sizes and corresponding line rate scaling while preserving bit depth and dynamic range.
How is calibration traceability maintained for quantitative OCT applications?
The camera includes factory-measured pixel response non-uniformity (PRNU) and dark signal non-uniformity (DSNU) maps; users may apply NIST-traceable flat-field and dark-reference correction during post-processing in accordance with ISO/IEC 17025 guidelines.
