Leica DM Series Metallurgical Microscope LED Illumination Module 11504199

Overview

The Leica DM Series Metallurgical Microscope LED Illumination Module (Model 11504199) is a precision-engineered, factory-calibrated light source designed exclusively for Leica’s upright and inverted metallurgical microscope platforms—including the DM275, DM4 M, DM6 M, and DM2500 M systems. Unlike conventional halogen or tungsten-halogen illumination units, this module employs a thermally stabilized, high-CRI (≥ 95) white LED array operating at a consistent color temperature of 5700 K—mimicking daylight spectral distribution critical for accurate color rendition in metallographic phase identification, inclusion analysis, and coating thickness evaluation. The illumination architecture follows Köhler illumination principles, ensuring uniform intensity across the full field of view (FOV) with minimal heat emission (< 1.2 W thermal load at objective port), thereby eliminating thermal drift during extended imaging sessions or automated tile-scan acquisitions. Its solid-state design eliminates filament degradation, enabling long-term photometric stability essential for quantitative image analysis workflows compliant with ASTM E3, ISO 4967, and EN 10247 standards.

Key Features

• Factory-aligned LED optics delivering <±1.5% intensity variation across 25 mm FOV
• Integrated thermal management system maintaining junction temperature within ±0.5°C over 8-hour continuous operation
• Digital dimming control via Leica Application Suite (LAS X) or hardware encoder knob (0–100% linear output)
• EMC-compliant power electronics meeting IEC 61000-6-3 (radiated emissions) and IEC 61000-6-2 (immunity)
• Plug-and-play compatibility with Leica’s DMI/DMLM digital bus—no external controllers or firmware updates required
• Zero warm-up time and instant on/off switching supporting rapid workflow transitions in QC laboratories

Sample Compatibility & Compliance

The 11504199 illumination module supports standard metallurgical sample configurations including polished cross-sections (epoxy-mounted alloys, composites, ceramics), bulk castings, weld zones, and thin-film coatings. It is fully compatible with both brightfield and darkfield contrast techniques, as well as polarized light observation when used with Leica’s universal analyzer/compensator modules. All optical components are sealed against dust and oil mist per IP52 rating—suitable for integration into production-floor metallography labs adhering to ISO 17025-accredited quality systems. The unit conforms to RoHS Directive 2011/65/EU and carries CE marking under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.

Software & Data Management

Control and calibration data are natively managed through Leica’s LAS X software platform (v3.7+), which logs illumination usage hours, thermal history, and output stability metrics for audit-ready GLP/GMP documentation. The module supports time-stamped illumination parameter export (intensity, exposure duration, channel selection) synchronized with image metadata—enabling traceability per FDA 21 CFR Part 11 requirements when deployed in regulated environments. No third-party drivers or SDKs are required; illumination state is automatically archived alongside TIFF/OME-TIFF datasets and can be recalled in acquisition protocols for method reproducibility.

Applications

• Quantitative grain size analysis per ASTM E112 and ISO 643
• Inclusion rating in steel and aluminum alloys per ASTM E45 and ISO 4967
• Carbide morphology assessment in tool steels and high-speed steels
• Porosity and shrinkage cavity characterization in investment castings
• Intergranular corrosion evaluation following ASTM A262 Practice A–E
• Coating adhesion and delamination inspection using differential interference contrast (DIC)

FAQ

Is the 11504199 module compatible with older Leica models such as the DMR or MPS60?
No—it is engineered specifically for Leica’s DM-series microscopes equipped with the DMI/DMLM bus interface introduced in 2012 and later.
Does this LED module support fluorescence excitation?
No—it is optimized for transmitted/reflected visible-light metallurgical imaging only; dedicated fluorescence modules (e.g., Leica EL6000) are required for UV/VIS excitation.
Can illumination intensity be controlled remotely via RS232 or Ethernet?
Remote control is supported exclusively through Leica’s proprietary DMI bus; no native RS232 or TCP/IP interface is provided.
What is the recalibration interval recommended by Leica?
Leica recommends annual photometric verification using a NIST-traceable spectroradiometer; no user-serviceable recalibration is permitted—only authorized Leica Service Centers perform optical alignment validation.
Is replacement of the LED array possible in-field?
No—the LED module is a sealed, non-user-replaceable subassembly; end-of-life units must be returned to Leica for factory refurbishment or exchange.