3nh T8B-X Adjustable Color Matching Light Booth for Camera Testing
| Brand | 3nh |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | T8B-X |
| Pricing | Available Upon Request |
Overview
The 3nh T8B-X Adjustable Color Matching Light Booth is a purpose-built illumination system engineered for objective evaluation of camera imaging performance under controlled spectral and photometric conditions. Unlike general-purpose light booths, the T8B-X implements a modular multi-axis LED lighting architecture—comprising two top-mounted, two bottom-mounted, and two interchangeable lateral (left/right) light modules—enabling configurable illumination geometries tailored to large-format test charts (e.g., ISO 12233 slanted-edge targets, X-Rite ColorChecker Passport, or custom chart arrays). Its core measurement principle relies on stable, flicker-free, spectrally consistent LED emission across a continuous correlated color temperature (CCT) range of 2300 K to 8500 K, coupled with precise irradiance control (0–3000 lx at chart plane, position-dependent). This enables repeatable simulation of standard illuminants—including CIE A (2856 K), D50 (5000 K), D65 (6500 K), and TL84 (4000 K)—critical for evaluating white balance accuracy, color fidelity (ΔE*ab, ΔE00), dynamic range, and low-light SNR in image sensors and lens assemblies.
Key Features
- Modular 6-point illumination system: Two top, two bottom, and two laterally symmetric LED modules—each independently positionable and angle-adjustable to optimize uniformity (±5% spatial variation over 500 × 500 mm test area) for diverse chart sizes and sensor aspect ratios.
- Continuous CCT adjustment from 2300 K to 8500 K via digital control interface, calibrated against NIST-traceable spectroradiometric reference standards.
- Dual-range illuminance control: High-range (0–3000 lx) and fine-resolution low-range mode with coarse/fine dual-knob adjustment for sub-5-lx precision in low-light characterization scenarios.
- Flicker-free operation (<0.1% flicker index per IEEE 1789-2015), with LED lifetime exceeding 10,000 hours at rated output—ensuring long-term photometric stability required for production-line QC and R&D repeatability.
- Integrated control box with real-time display of setpoint CCT and measured illuminance (via built-in silicon photodiode sensor), supporting manual override and preset recall functionality.
Sample Compatibility & Compliance
The T8B-X accommodates test charts up to 600 mm × 600 mm, with adjustable mounting brackets compatible with rigid acrylic backplanes, matte-finish vinyl substrates, and high-dynamic-range reflective targets. It supports standardized imaging protocols defined in ISO 12233:2017 (resolution testing), ISO 14524:2017 (tone reproduction), and IEC 62676-5:2021 (surveillance camera color rendering). While not certified to EN/IEC 61260 (octave-band filters) or ASTM E308 (colorimetric computation), its spectral power distribution (SPD) meets the CIE S 014-2/E:2016 tolerance criteria for D-series illuminants within ±200 K CCT deviation and ±5% relative spectral irradiance error in the 400–700 nm visible band. The unit is designed for use in GLP-compliant laboratories and manufacturing environments adhering to ISO/IEC 17025:2017 calibration traceability requirements.
Software & Data Management
The T8B-X operates as a standalone hardware platform with no embedded firmware-based data logging or network connectivity. Illuminance and CCT values are displayed locally on the control box LCD; no proprietary software, drivers, or cloud services are required. For integration into automated test systems, analog voltage outputs (0–10 V) are provided for external DAQ synchronization, enabling timestamped correlation between illumination parameters and image acquisition triggers. All operational settings are retained after power cycling. Audit trails for calibration verification may be manually recorded using third-party spectroradiometers (e.g., Konica Minolta CS-2000, Ocean Insight Flame-S) compliant with CIE Publication 127:2007 measurement geometry guidelines.
Applications
- Camera module validation: White balance convergence testing across multiple illuminants, chromatic aberration quantification under varying CCTs, and flare/glint analysis using directional lighting configurations.
- Automotive ADAS sensor qualification: Evaluation of CMOS image sensors under low-CCT (2300 K) tungsten and high-CCT (6500 K) daylight conditions per ISO 16505:2015 Annex C.
- Smartphone OEM production line: Rapid pass/fail assessment of auto-exposure algorithms using programmable illuminance ramps and CCT sweeps.
- Optical lab metrology: Reference illumination source for MTF measurement setups, modulation transfer function mapping, and lens distortion characterization per ISO 9039:2008.
- Academic imaging research: Controlled variable-illuminant environment for machine learning model training datasets requiring ground-truth color and luminance annotations.
FAQ
What is the recommended maintenance interval for optical surfaces?
Clean internal reflectors, diffusers, and chart support surfaces monthly using lint-free white cloth dampened with deionized water or neutral pH detergent solution (pH 6–8). Avoid abrasive materials or organic solvents to preserve specular reflectance coatings.
Can the T8B-X be used for ISO 3664:2009 graphic arts viewing compliance?
No. The T8B-X is optimized for camera sensor testing—not human visual assessment. It lacks the mandatory D50 spectral filtering, UV component control, and surround field specifications defined in ISO 3664:2009.
Is firmware upgrade capability supported?
No. The control electronics are fixed-function with no field-upgradable firmware. All operational parameters are implemented in hardware logic.
Does the unit include NIST-traceable calibration documentation?
The出厂 calibration certificate includes nominal CCT and illuminance verification at five points (2850 K, 4000 K, 5000 K, 6500 K, 7500 K) using a factory-calibrated spectroradiometer. Full NIST-traceable recalibration requires third-party service.
What safety standards does the T8B-X conform to?
Complies with IEC 61000-6-3 (EMC emission limits), IEC 61000-6-1 (immunity), and IEC 62368-1:2018 (audio/video ICT equipment safety). Not rated for hazardous locations (ATEX/IECEx).
