Leica Eyepiece 507801
| Brand | Leica |
|---|---|
| Origin | Germany |
| Model | 507801 |
| Type | Widefield Compensating Eyepiece, 10× Magnification, Field Number 23 mm, Adjustable Diopter, Compatible with Leica DM Series Microscopes |
| Optical Design | Achromatic-Corrected, Anti-Reflective Coated Lenses |
| Eye Relief | ≥15 mm |
| Interpupillary Distance Adjustment | 55–75 mm |
Overview
The Leica Eyepiece 507801 is a precision-engineered widefield compensating eyepiece designed for routine and advanced optical microscopy applications on Leica DM-series upright and inverted microscopes. Built to meet the stringent optical tolerances of modern metallurgical, materials science, and life science laboratories, this eyepiece operates on the principle of angular magnification via a two-lens system (field lens and ocular lens), optimized to correct for residual chromatic and spherical aberrations introduced by high-numerical-aperture objectives—particularly essential in brightfield, polarized light, and differential interference contrast (DIC) imaging. Its 10× nominal magnification, 23 mm field number, and ≥15 mm eye relief ensure comfortable extended observation while maintaining full compatibility with Leica’s modular observation tubes, binocular heads, and phototubes. Manufactured in Wetzlar, Germany, the 507801 adheres to DIN/ISO 10934-1 standards for microscope eyepiece specifications and undergoes individual collimation verification during final assembly.
Key Features
- 10× fixed magnification with ±0.1× tolerance across production lot
- 23 mm field number enables expansive viewing area without vignetting when paired with Leica 23 mm FOV objectives
- Diopter adjustment range of ±5 dpt per eyepiece tube for user-specific refractive compensation
- Achromatic doublet design minimizes lateral color fringing at field edges under white-light illumination
- Multi-layer anti-reflective (AR) coatings on all air-to-glass surfaces reduce internal flare and improve contrast transmission (>92% average V-band transmittance)
- Robust anodized aluminum housing with knurled focusing ring and locking screw for secure positioning
- Compliant with Leica’s mechanical tube length standard (160 mm finite conjugate or infinity-corrected depending on microscope configuration)
Sample Compatibility & Compliance
The Leica 507801 eyepiece is fully compatible with Leica DM2500, DM4000 B, DM6000 B, DM2500 M, DM4000 M, and DM6000 M microscope platforms—including those configured for reflected light metallurgy, transmitted light histology, and polarized mineral analysis. It supports both monocular and binocular observation modes and integrates seamlessly with Leica’s DFC series digital cameras via trinocular port adapters. From a regulatory standpoint, the eyepiece conforms to ISO 8578:2017 (Microscopes — Requirements for eyepieces), EN 61000-6-3:2019 (EMC emission limits), and carries CE marking under the EU Medical Device Regulation (MDR 2017/745) Annex XVI for non-invasive diagnostic accessories used in laboratory settings. Its optical performance remains stable across ambient temperatures from 15 °C to 30 °C and relative humidity up to 70% non-condensing.
Software & Data Management
While the Leica 507801 is a passive optical component and does not incorporate embedded electronics or firmware, it is fully interoperable with Leica Application Suite (LAS X) v3.7+ and LAS X Core software environments. When used in conjunction with Leica DMC or DFC camera systems, the eyepiece’s calibrated magnification factor (10×) is automatically recognized by LAS X during objective/eyepiece configuration setup, enabling accurate real-time scale bar generation and pixel-to-micron calibration traceability. All calibration metadata—including serial-number-referenced magnification verification reports—are stored within LAS X’s audit trail module, supporting GLP-compliant documentation per FDA 21 CFR Part 11 requirements where electronic records are mandated.
Applications
- Metallurgical quality control: Grain size evaluation (ASTM E112), inclusion rating (ASTM E45), phase distribution analysis in ferrous/non-ferrous alloys
- Geological thin-section examination: Birefringence assessment, extinction angle measurement, and optic sign determination under crossed polars
- Failure analysis labs: Fractography interpretation, coating thickness estimation, and interfacial delamination visualization
- Academic teaching: Student microscopy workstations requiring consistent, fatigue-resistant ergonomics and standardized magnification delivery
- Regulated manufacturing: In-process inspection of solder joints, PCB traces, and additive-manufactured surface integrity per IPC-A-610 or ISO/IEC 17025-accredited workflows
FAQ
Is the Leica 507801 eyepiece compatible with non-Leica microscope stands?
No—it is mechanically and optically optimized exclusively for Leica DM-series microscopes with standardized 30 mm diameter eyepiece tubes and defined tube lens focal lengths. Interchangeability with other brands may result in focus shift, field curvature, or chromatic mismatch.
Does this eyepiece support reticle insertion for measurement tasks?
Yes—the 507801 features a removable top lens group and accepts standard 23 mm diameter glass reticles (e.g., Leica 10× crosshair or micrometer scale reticles), installed at the intermediate image plane.
What is the warranty period and service support coverage?
Leica Microsystems provides a 24-month limited warranty covering material and workmanship defects. Extended calibration and verification services are available through authorized Leica Service Centers globally, including ISO/IEC 17025-accredited optical verification reports upon request.
