3nh VC-118-X Adjustable CCT & Illuminance Camera Test Light Booth

Overview

The 3nh VC-118-X Adjustable CCT & Illuminance Camera Test Light Booth is an engineered optical test environment designed specifically for quantitative evaluation of image sensors, lenses, and camera modules under precisely controlled spectral and photometric conditions. It operates on the principle of standardized illumination geometry—employing dual independently adjustable high-CRI LED light panels to generate uniform, stable, and spectrally tunable irradiance across a large internal cavity (1106 × 1001 × 800 mm). Unlike generic light booths, the VC-118-X integrates mechanical degrees of freedom critical to camera validation: a motorized (optional) or manually lockable linear stage for precise axial positioning of the Device Under Test (DUT), and fully articulating LED panels with dual-axis tilt adjustment (±30° rotation, ±100 mm longitudinal translation) to optimize illumination homogeneity over extended field-of-view (FOV) targets—including ultra-wide-angle (180°+) and fisheye optics. Its design adheres to the geometric and photometric requirements specified in ISO 12233:2017 Annex D for resolution chart imaging, while enabling repeatable testing at multiple illuminance levels (10–10,000 lx) and correlated color temperatures (2300–8000 K)—critical for evaluating auto-white-balance (AWB), exposure control, low-light SNR, and chromatic aberration performance.

Key Features

• Independent dual-channel LED illumination system with continuous CCT tuning (2300–8000 K) and high-resolution illuminance control (coarse + fine adjustment per channel)
• Lockable linear translation stage for DUT positioning (±300 mm travel range), compatible with ISO 12233 2× resolution charts (712 × 400 mm) and custom magnetic-mount test targets
• Articulated LED panels mounted on dual-locking linear rails and pivot hinges—enabling spatial repositioning and angular alignment to achieve ≥90% illuminance uniformity (measured per CIE S 014-2/E:2020 method) across target plane
• Integrated I/O panel (250 × 150 mm) featuring RS232, dual USB 2.0, dual Ethernet (10/100BASE-T), dual DC power outputs (12 V/5 A), AV composite, and pneumatic quick-connect (PM06) for synchronized trigger, data logging, and automated test integration
• Neutral gray matte interior finish (L* ≈ 50, ΔE < 1.0 vs. standard Munsell N5) with black velvet curtain sealing to eliminate ambient light intrusion and ensure measurement integrity
• Compliance-ready architecture: All firmware logs include timestamped illumination parameters; optional audit trail module supports FDA 21 CFR Part 11 compliance for regulated R&D environments

Sample Compatibility & Compliance

The VC-118-X accommodates camera modules ranging from 1/4″ to 1″ optical format, including multi-sensor arrays and stereo rigs, via its modular mounting plate and adjustable platform. Its internal volume allows full-field illumination of ISO 12233 slanted-edge, Siemens star, and EIA-1956 test charts—including wide-angle variants conforming to IEEE Std 1858-2019 (CPIQ) Annex B. The system meets photometric stability requirements defined in ISO/TR 22222:2021 for camera characterization labs and satisfies the spectral fidelity criteria in CIE Publication 15:2018 for visual assessment applications. Optional calibration reports traceable to NIM (China National Institute of Metrology) are available upon request. For quality assurance workflows, the booth supports GLP-compliant operation through configurable user access levels and electronic signature-capable software integration.

Software & Data Management

While the VC-118-X operates as a standalone hardware platform via its front-panel rotary controls and physical switches, it is fully compatible with third-party machine vision and metrology software suites (e.g., HALCON, OpenCV-based pipelines, or custom Python test scripts) via RS232 serial protocol or TCP/IP Ethernet interface. Illumination state (CCT, lux per channel, power-on duration) is queryable and programmable using ASCII command sets documented in the included SDK. Firmware updates are delivered via USB flash drive and include version-locked parameter validation to prevent out-of-spec configuration. All operational events—including power cycles, CCT changes, and illuminance adjustments—are logged with UTC timestamps and stored onboard for ≥30 days, supporting root-cause analysis during failure investigations or regulatory audits.

Applications

• Objective evaluation of modulation transfer function (MTF), distortion, and vignetting across variable FOVs and illumination conditions
• Validation of auto-exposure (AE) and auto-white-balance (AWB) algorithms under dynamic CCT/illuminance transitions
• Low-light noise profiling (temporal/spatial SNR, PRNU, DSNU) per EMVA 1288:2020 methodology
• Color accuracy verification against sRGB, Adobe RGB, and DCI-P3 gamuts using calibrated reference cameras
• Production line pass/fail testing of automotive ADAS cameras, smartphone front/rear modules, and industrial inspection systems
• Research-grade characterization of novel sensor architectures (e.g., event-based, HDR, stacked CMOS) requiring spectrally stable, flicker-free excitation

FAQ

What standards does the VC-118-X comply with for camera testing?
It conforms to ISO 12233:2017 Annex D (resolution chart imaging), CIE S 014-2/E:2020 (illuminance uniformity), and GB/T 3977-2008 (colorimetric measurement conditions). Optional NIM-traceable calibration extends compliance to JJG 211-2021 (luminance standard).

Can the VC-118-X support automated test sequences?
Yes—via RS232 or Ethernet, users can script CCT sweeps, illuminance ramps, and dwell times; integration with PLCs or LabVIEW is supported through Modbus RTU or TCP wrappers.

Is the LED light source replaceable, and what is its service life?
LED modules are field-replaceable as sealed assemblies; rated lifetime is 50,000 hours at 25°C ambient, with lumen maintenance ≥90% at 6,000 hours (per IES LM-80-15).

Does the booth include thermal management for extended operation?
Yes—integrated convection cooling with temperature-monitored heat sinks maintains LED junction temperature within ±2°C tolerance during continuous 8-hour operation at max output.

What mounting options are available for non-standard camera fixtures?
The base platform features M6 threaded holes on 25-mm grid spacing; custom brackets and kinematic mounts can be bolted directly to the aluminum frame without modification.