MiXran Meg1044 Roof Prism
| Brand | MiXran |
|---|---|
| Model | Meg1044 |
| Type | Precision Optical Roof Prism |
| Material | BK7 or Fused Silica (standard) |
| Coating | Broadband Anti-Reflection (BBAR), R<0.25% per surface, 400–700 nm |
| Surface Quality | 20–10 scratch-dig |
| Flatness | λ/10 @ 633 nm |
| Deviation Accuracy | ≤3 arcsec |
| Dimensional Tolerance | ±0.05 mm |
| Clear Aperture | ≥90% of nominal aperture |
| Origin | Beijing, China |
Overview
The MiXran Meg1044 Roof Prism is a high-precision optical component engineered for applications requiring image inversion with zero lateral displacement and maintained handedness—critical in binoculars, rangefinders, endoscopic imaging systems, and laboratory-grade collimation setups. Based on the classic roof prism geometry, it consists of two mutually perpendicular reflecting faces meeting along a sharp “roof” edge, enabling 180° image rotation about the optical axis while preserving chirality. Unlike Porro prisms, the Meg1044 achieves compact, in-line beam folding with minimal path deviation, making it ideal for space-constrained optical trains where mechanical stability and wavefront fidelity are paramount. Manufactured from optically homogeneous BK7 glass (with fused silica available upon request), each unit undergoes interferometric verification to ensure λ/10 surface flatness and sub-3 arcsecond angular deviation tolerance—meeting ISO 10110-3 specifications for precision prisms.
Key Features
- Precision-ground and polished roof edge with <3 arcsec apex alignment tolerance, verified via autocollimation and phase-shifting interferometry
- Broadband anti-reflection (BBAR) coating optimized for 400–700 nm, delivering average reflectance loss <0.5% per surface across the visible spectrum
- Clear aperture ≥90% of nominal dimension, with tight dimensional tolerances (±0.05 mm) on all critical edges and mounting surfaces
- Surface quality rated at 20–10 scratch-dig per MIL-PRF-13830B, ensuring compatibility with high-power CW and pulsed laser systems up to 5 J/cm² (10 ns, 1064 nm)
- Optional custom coatings available: NIR-enhanced (700–1100 nm), UV-grade (250–400 nm), or polarization-maintaining dielectric stacks
- Traceable metrology documentation provided with each batch, including interferograms, spectral reflectance curves, and certificate of conformance to ISO 9001:2015
Sample Compatibility & Compliance
The Meg1044 Roof Prism is designed for integration into OEM optical assemblies and research-grade instrumentation requiring strict adherence to international optical manufacturing standards. It complies with ISO 10110-7 (surface imperfections), ISO 10110-8 (stress birefringence), and ISO 9211-4 (coating durability). All units are RoHS 2011/65/EU and REACH (EC 1907/2006) compliant. No hazardous substances—including lead, cadmium, or hexavalent chromium—are used in substrate fabrication or coating deposition. For regulated environments (e.g., medical device optics under IEC 60601-2-57 or aerospace avionics per DO-160 Section 21), optional GLP-aligned test reports—including environmental stress screening (thermal cycling, vibration, humidity soak)—can be supplied upon order specification.
Software & Data Management
While the Meg1044 is a passive optical component, its performance integration is fully supported within industry-standard optical design and tolerancing workflows. Zemax OpticStudio and CODE V prescription files—including surface sag tables, coating dispersion models (Sellmeier coefficients), and thermal expansion data (α = 7.1 × 10⁻⁶ /K for BK7)—are available upon request. Each prism ships with a unique serial-numbered calibration sheet containing measured wavefront error (WFE), transmitted wavefront distortion (TWD), and spectral transmittance data referenced to NIST-traceable spectrophotometers. Batch-level metrology archives are retained for 10 years and accessible via secure customer portal under GDPR-compliant data governance protocols.
Applications
- High-resolution stereo microscopy systems requiring precise image recombination and polarization preservation
- OEM binocular and monocular eyepiece modules for defense and surveying instruments
- Laser beam steering and retro-reflection paths in interferometric displacement sensors (e.g., homodyne/heterodyne vibrometers)
- Endoscopic and laparoscopic imaging relay systems where compactness and minimal chromatic shift are essential
- Calibration references in optical alignment benches and autocollimator-based null testing setups
- Education and advanced undergraduate optics labs demonstrating polarization-dependent phase shifts at the roof edge
FAQ
What is the maximum incident angle for optimal polarization retention?
For linearly polarized input beams, the roof edge induces a relative π-phase shift between orthogonal components; optimal polarization fidelity is maintained for angles of incidence ≤±2.5° from normal. Beyond this range, edge diffraction effects increase wavefront asymmetry.
Can the Meg1044 be used with ultraviolet (UV) light sources?
Standard BK7 versions are not recommended below 350 nm due to absorption; fused silica substrates with MgF₂-overcoated BBAR are available for 250–400 nm operation—contact technical support for spectral transmission validation data.
Is custom dimensioning supported?
Yes. Standard sizes include GP15-010 (13.7 × 10 × 10 mm, Ø9 mm CA), GP15-015 (20.55 × 15 × 15 mm, Ø14 mm CA), GP15-020 (27.4 × 20 × 20 mm, Ø19 mm CA), and GP15-030 (41.1 × 30 × 30 mm, Ø29 mm CA); non-standard geometries require minimum order quantity (MOQ) of 10 pcs and 8-week lead time.
Do you provide mounting fixtures or kinematic adapters?
Standard prisms ship unmounted; however, MiXran offers compatible aluminum kinematic mounts (Model KM-RP-01 series) with ±1 arcmin tip/tilt adjustability and black anodized, non-outgassing surfaces suitable for vacuum-compatible optical tables.
