Double-Concave Cylindrical Mirror: A Core Optical Component for Precise Unidirectional Beam Divergence and Shaping
As an important category in the cylindrical mirror series, the double-concave cylindrical mirror features double-concave curvature in only one direction. It can achieve precise unidirectional beam divergence, collimation and shaping, and is widely used in high-end optical systems such as LiDAR, optical communication and laser instruments, making it an indispensable core component in special optical path regulation.
Based on UltraOpto's mature planar optical processing technology, we provide full-specification double-concave cylindrical mirrors with diameters ranging from 5mm to 250mm and curvature radii from 4mm to infinity. Customization of asymmetric curved surfaces is supported, meeting the stringent requirements of various special optical systems with high precision and low loss characteristics.
Core Features
Unidirectional Beam Divergence:
The unique double-concave cylindrical structure diverges beams in only one direction, enabling precise control of the unidirectional optical path and avoiding optical distortion in unnecessary directions.
Ultra-high Precision Control:
With surface accuracy up to λ/4–λ/8 @633nm and surface quality of 20-80, it ensures uniform beam divergence without stray light interference.
Multi-material Compatibility:
Optional substrates include glass, fused silica, calcium fluoride, etc., suitable for optical applications in UV, visible and infrared bands.
Flexible Customization:
Supporting various shapes such as rectangular and circular, customizable coatings like anti-reflection, reflective and waterproof films are available to meet the optical path requirements of different scenarios.
High Stability:
Precision grinding and polishing processes combined with strict quality control ensure long-term stable operation of the component under complex working conditions.
Application Scenarios
Widely applied to LiDAR, laser barcode scanners, optical communication equipment, document scanners, laser printers, optical analyzers, etc., it plays a core role in laser shaping, beam collimation and signal transmission scenarios, helping optical systems achieve efficient and stable unidirectional beam regulation.
Process Guarantee
From substrate selection, precision grinding and polishing to coating and cleaning, UltraOpto has established a full-process quality control system. Each double-concave cylindrical mirror is inspected by high-end equipment such as Zygo interferometers, meeting high industry standards and providing customers with stable and reliable optical solutions.
Selection of high-quality base materials:
Adapted to the requirements of directional optics Crafted from high-quality optical substrates including H-K9L and fused silica, our Biconcave Cylindrical Mirror offers excellent optical homogeneity and mechanical stability. H-K9L substrates provide cost-effective performance for visible and near-infrared applications (400-1200nm), with low chromatic dispersion and high transmittance. Fused silica variants excel in UV and high-power laser scenarios, featuring ultra-low thermal expansion and resistance to radiation-induced damage. The substrate undergoes precision grinding to achieve a cylindrical concave profile with strict curvature radius control, ensuring directional light manipulation with minimal distortion. All substrates are inspected for bubbles, impurities and uniformity to guarantee consistent optical performance across the entire mirror surface.
Advanced coating technology:
Enhanced reflection and durability Our Biconcave Cylindrical Mirror adopts multi-layer coating technologies tailored to specific applications, including reinforced aluminum coating, protective silver coating, gold coating and dielectric high-reflective coatings (D01-D04). Reinforced aluminum coating delivers >85% reflectivity across 400-1200nm, making it ideal for general-purpose beam shaping. Silver coating offers enhanced reflectivity (>95%) in visible and near-infrared bands, while gold coating provides superior performance in mid-infrared ranges. Dielectric coatings achieve ultra-high reflectivity (>99%) at target wavelengths for high-precision laser systems. The coating process utilizes vacuum evaporation to ensure film uniformity and strong adhesion, with a protective overcoat to resist oxidation, humidity and mechanical wear for long-term reliability.
Core performance advantages: Precise beam control with directional accuracy
Ultraopto’s Biconcave Cylindrical Mirror offers outstanding surface accuracy with a flatness of λ/4 @633nm, ensuring consistent beam shaping performance along the cylindrical axis. It features tight dimensional tolerance control (+0.0/-0.1mm for diameter, ±0.2mm for thickness) and a centering error of less than 3 arc minutes, allowing for seamless integration into standard optical mounts. The mirror's unique biconcave cylindrical design enables it to work in conjunction with plano-convex cylindrical mirrors to convert elliptical laser beams into circular beams, a crucial function in semiconductor laser systems. Protective chamfers (0.2-0.5mm×45°) prevent edge chipping during installation and handling. enhancing mechanical durability.
Full-scenario application coverage:
Empowering laser and imaging systems Our Biconcave Cylindrical Mirror is widely applied in professional optical fields that demand directional beam control. In laser systems, it shapes laser beams into linear light sources for industrial cutting, welding and marking applications. In projection systems, it adjusts light distribution to optimize screen illumination uniformity. For optical measurement instruments, it provides precise beam expansion for distance measurement and dimensional inspection. The mirror also finds use in scientific research setups such as laser interferometers and spectral analysis equipment, as well as in medical imaging systems for directional light guidance. Its ability to manipulate light along a single axis makes it indispensable for applications requiring linear beam profiles.
Customized Services: Meeting Personalized Needs
As a leading manufacturer of precision optical components, Ultraopto provides fully customized biconcave cylindrical mirror solutions to meet your unique application requirements. Our professional R&D team can tailor key parameters including substrate material (H-K9L, fused silica), diameter (12.5mm to 100mm+), curvature radius, coating type, and surface accuracy (up to λ/10 @633nm). We support custom focal length optimization for specific beam shaping needs and can provide multi-wavelength coating designs for broadband applications. All custom mirrors undergo multi-stage strict quality inspection, including reflectivity measurement and surface flatness verification. dimensional accuracy testing and environmental stability assessment, with a detailed quality report provided to ensure compliance with your design specifications.
Quality Assurance and Technical Support:
Your Trusted Choice Backed by advanced optical manufacturing technology and a complete quality control system, Ultraopto ensures stable batch supply and consistent product quality. Our production processes adhere to international optical component standards, with each Biconcave Cylindrical Mirror subjected to rigorous testing using interferometers and spectrophotometers. We provide professional technical consultation on mirror selection, system integration and coating optimization, helping you achieve optimal beam shaping results for your specific application. Whether you need standard products for industrial production or custom solutions for cutting-edge research, Ultraopto’s Biconcave Cylindrical Mirror delivers reliable performance and exceptional value.
For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Biconcave Cylindrical Mirror, please contact our professional sales and technical team through the official website, and we will provide you with efficient, personalized and professional optical solutions.
