LARRY-USB3648 Linear CCD Array Detector (3648 Pixels)

Overview

The LARRY-USB3648 is a high-performance, ambient-temperature linear CCD array detector engineered for precision spectroscopic applications in laboratory and industrial environments. Based on charge-coupled device (CCD) imaging technology, it operates on the principle of photoelectron accumulation in silicon photodiodes under incident photon flux, followed by sequential charge transfer and analog-to-digital conversion. With 3648 active pixels and a narrow 7 µm pixel pitch, the detector delivers enhanced spectral resolution—particularly critical in compact spectrometer designs where optical dispersion per pixel must be minimized. Its dual-variant architecture (D7265 industrial-grade and D7266 research-grade) supports flexible deployment across UV-VIS-NIR spectral domains, with extended UV response down to 200 nm enabled by optimized front-illuminated sensor coating and anti-reflective treatment. The detector features USB 3.0 interface compliance, enabling plug-and-play integration with host PCs without external power supplies or frame grabbers.

Key Features

• 3648-pixel linear CCD array with uniform 7 µm × 200 µm pixel geometry and 25.5 mm effective photosensitive length
• Dual configuration options: D7265 (320–1100 nm spectral range) for robust industrial process monitoring; D7266 (200–1100 nm) for demanding UV-sensitive research applications
• Signal Enhancement Function (SEF) incorporating hardware-level pixel binning (1×, 2×, 4×, 8×) and real-time curve smoothing algorithms to optimize signal-to-noise ratio without compromising acquisition speed
• Programmable integration time from 0.01 ms to 30 s, supporting both transient emission studies and low-light absorption measurements
• External triggering via TTL-compatible input (400 ns rise time), enabling synchronization with pulsed light sources, lasers, or mechanical choppers
• 12-bit ADC with 23 e⁻/count gain, 94,000 e⁻ full-well capacity, and RMS read noise of 115 e⁻ (5 counts)
• Native USB 3.0 interface with <30 ms per-scan latency and sustained 30 spectra/s throughput at full resolution

Sample Compatibility & Compliance

The LARRY-USB3648 is designed for integration into OEM spectrometers, modular optical benches, and custom-built analytical platforms. It accepts collimated or focused beam illumination across its 25.5 mm active aperture, accommodating standard fiber-optic coupling (SMA905) and free-space optical alignment. No cooling system is required, making it suitable for ambient-temperature operation in ISO Class 5–8 cleanrooms or production-floor environments. While not certified as standalone medical or safety equipment, the detector complies with CE marking requirements for electromagnetic compatibility (EN 61326-1) and low-voltage directive (2014/35/EU). Its firmware and driver stack support audit-ready data integrity workflows compliant with GLP and GMP principles when deployed with validated software (e.g., SpectraSolve v5.x with 21 CFR Part 11–enabled logging).

Software & Data Management

The detector ships with three software tiers: D7401 SpectraArray (entry-level acquisition and basic spectral processing for Windows 7–10); D7404 SpectraSolve (advanced calibration, multivariate analysis, and report generation with PDF export and metadata embedding); and D7421 OEM Developer Kit (C++/VC++ libraries, header files, and sample code for embedded control systems). LabVIEW drivers (D7422) provide native VI integration for NI platform users. All software packages implement timestamped acquisition logs, hardware-level trigger event tagging, and lossless 16-bit raw data export (binary .bin or HDF5 format). SpectraSolve includes built-in dark-current subtraction, pixel non-uniformity correction (NUC), and wavelength calibration using NIST-traceable Hg/Ar lamp spectra.

Applications

• UV-Vis absorption and reflectance spectroscopy in pharmaceutical QC labs (e.g., USP compliant dissolution testing)
• NIR-based moisture and composition analysis in food and agricultural product lines
• Plasma emission monitoring in semiconductor etch and deposition tools
• Fluorescence lifetime decay profiling in life science instrumentation
• OEM integration into handheld Raman spectrometers and portable LIBS systems
• Educational lab setups for teaching diffraction grating theory and Beer-Lambert law validation

FAQ

What is the difference between the D7265 and D7266 variants?
The D7265 uses an industrial-grade front-illuminated CCD optimized for stability and longevity in production environments, with spectral response beginning at 320 nm. The D7266 employs a research-grade version featuring enhanced quantum efficiency below 250 nm and zero defective pixels, verified via factory wafer-level testing.
Does the detector require external cooling?
No. The LARRY-USB3648 is specified for ambient-temperature operation (15–35 °C) and incorporates thermal drift compensation in firmware. Dark current remains stable within ±5% over 8-hour continuous operation at 25 °C.
Can I synchronize multiple LARRY-USB3648 units to a single trigger source?
Yes. Each unit accepts TTL-level external triggers independently. For multi-channel phase-coherent acquisition, use the D7404 SpectraSolve software’s master-slave mode with hardware delay compensation.
Is spectral calibration included with purchase?
A factory-applied wavelength calibration file (.cal) is provided for each unit, traceable to NIST SRM 2035 (Hg-Ar emission lamp). Users may perform recalibration using any line-source lamp with known emission peaks.
What operating systems are supported?
Windows 7 through 11 (64-bit), Linux kernel 4.15+ (via open-source libusb drivers), and macOS 12+ (with Rosetta 2 compatibility layer for legacy binaries).