Xenon Short-Arc Lamp Bulb (Spherical Type) by CME-Beijing
| Brand | CME |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Optical Component |
| Model | CME-Xe-Sph |
| Light Source Type | Short-Arc Xenon Lamp |
| Color Temperature | ~6000 K |
| Spectral Output | Continuous in Visible Range (380–780 nm) |
| CRI (Ra) | ≥94 |
| Arc Stability | High |
| Warm-up Time to 95% Luminous Flux | <15 s |
| Arc Spot Diameter | ≤0.5 mm |
| Rated Lifetime | ≥800 h |
| Compliance | RoHS-compliant construction |
| Mounting Interface | Standard B22 or PG13 base (configurable) |
Overview
The CME-Xe-Sph is a high-performance spherical short-arc xenon lamp bulb engineered for precision optical instrumentation requiring stable, daylight-balanced broadband illumination. Operating on the principle of high-pressure DC arc discharge in pure xenon gas, this lamp generates a near-blackbody continuum across the visible spectrum (380–780 nm), with minimal spectral gaps and negligible mercury-line interference—making it especially suitable for applications demanding photometric fidelity and spectral uniformity. Its compact spherical envelope and precisely centered electrode geometry produce a sub-millimeter arc spot (<0.5 mm), enabling efficient coupling into monochromators, integrating spheres, collimators, and fiber-optic light guides. Designed for laboratory-grade repeatability, the CME-Xe-Sph delivers consistent radiometric output over its rated lifetime of ≥800 hours under recommended operating conditions (constant-current DC power supply, adequate forced-air or water cooling, and stable mechanical mounting).
Key Features
- Daylight-matched color temperature of approximately 6000 K, closely replicating natural solar irradiance for visual assessment and colorimetric calibration.
- High color rendering index (CRI Ra ≥94), ensuring accurate chromatic reproduction in imaging, spectroscopy, and visual inspection systems.
- Instant-on capability: reaches >95% of stabilized luminous flux within 15 seconds after ignition—critical for time-resolved experiments and automated optical workflows.
- Exceptional arc stability: low RMS fluctuation (<1.5%) in luminous intensity under constant-current drive, minimizing noise in photometric and radiometric measurements.
- Spherical quartz envelope with ultra-low hydroxyl content (<1 ppm OH⁻) ensures high UV transmission down to 220 nm and long-term spectral consistency.
- Robust thermal management design compatible with standard air-cooled or water-jacketed lamp housings; thermal expansion coefficient matched to common optical mounts.
Sample Compatibility & Compliance
The CME-Xe-Sph is compatible with standard optical breadboards, lamp housings (e.g., Thorlabs, Newport, or custom OEM enclosures), and spectrophotometer light sources requiring a high-brightness point source. It meets RoHS Directive 2011/65/EU requirements for hazardous substance restriction. While not certified to IEC 62471 for photobiological safety as a standalone component, it must be integrated into systems incorporating appropriate UV shielding, interlocks, and beam attenuation per EN 60825-1 and ANSI Z136.1 when operated above Class 1 exposure limits. The lamp complies with GLP-relevant traceability standards through batch-specific calibration reports (available upon request), including initial spectral irradiance curves and arc centering verification.
Software & Data Management
As a passive optical component, the CME-Xe-Sph does not include embedded firmware or digital interfaces. However, it is fully interoperable with industry-standard instrument control ecosystems—including LabVIEW, Python (via PyVISA), and MATLAB—when used with compatible DC power supplies (e.g., Keithley 24xx series, Lambda GENESYS+) equipped with analog/digital monitoring outputs. Radiometric characterization data (spectral power distribution, spatial intensity profile, temporal stability logs) can be archived in HDF5 or CSV formats aligned with FAIR data principles. For regulated environments (e.g., ISO/IEC 17025 labs), users may implement audit-trail-enabled logging via third-party DAQ systems compliant with FDA 21 CFR Part 11 requirements.
Applications
- Reference light source in UV-Vis-NIR spectrophotometers and double-beam absorption analyzers.
- Illumination engine for solar simulator classification (per ASTM E927-22 Class AAA requirements when combined with appropriate filters and homogenizers).
- Primary standard in color measurement systems (CIE 1931 XYZ tristimulus integration) and display calibration setups.
- Excitation source in fluorescence microscopy and lifetime imaging (FLIM), particularly where broad-spectrum excitation is preferred over laser lines.
- Light source in environmental testing chambers simulating daylight exposure per ISO 4892-2 and SAE J2527.
- Calibration reference for radiometers, photometers, and CCD/CMOS sensor linearity testing.
FAQ
What is the recommended operating current range for the CME-Xe-Sph?
The lamp is rated for DC operation between 15 A and 30 A, depending on power rating and thermal management configuration. Consult the datasheet for model-specific derating curves above 25 °C ambient.
Can this lamp be used in pulsed mode?
No—it is designed exclusively for continuous-wave (CW) DC operation. Pulsed or AC excitation will cause rapid electrode erosion and catastrophic failure.
Is ozone generation a concern during operation?
Yes—xenon arcs emit significant radiation below 200 nm, which photodissociates atmospheric oxygen. Operation requires ventilation or enclosed purge with nitrogen or dry air.
How often should the lamp be replaced for metrologically critical applications?
For applications requiring photometric stability better than ±0.5%, replacement is recommended at 600–700 hours, even if nominal output remains within specification.
Does CME provide spectral calibration certificates?
Yes—NIST-traceable spectral irradiance calibration (350–1100 nm) is available as an optional service, delivered with uncertainty budgets per ISO/IEC 17025.
