Micro Rod Lenses

Micro Rod Lenses produced by UItraopto Precision Optics Co. Ltd. have a minimum outer diameter of 0.8mm. They are commonly used in medical endoscopes, micro industrial endoscopes, optical fiber communication modules, MEMS sensors, and micro projection lenses. UItraopto Optoelectronic can process customized micro rod lenses of various sizes, with different angle accuracy, surface shape accuracy, coating, and other specifications according to customer requirements.

1. Rod-shaped lenses for endoscopes

2. Miniature and high-precision

3. Optical glass material

4. Customized according to customer drawings

5. Proficient manufacturing technology

Selection of high-quality base materials: 

Meeting the requirements of micro-optics Crafted from high-quality optical materials including BK7, N-SF11, H-LAF76 and fused silica, our Micro Rod Lenses offer excellent optical transmittance and mechanical stability. BK7 variants provide cost-effective performance for visible light applications, while N-SF11 and H-LAF76 substrates offer higher refractive indices for short focal length designs. Fused silica options excel in UV and high-temperature environments, featuring ultra-low thermal expansion and resistance to radiation damage. The substrate is drawn and polished to achieve a uniform rod profile with strict diameter tolerance, ensuring consistent optical performance along the entire lens length. All substrates undergo rigorous inspection for eccentricity and straightness to minimize beam deviation.

Precision manufacturing process: Ensuring micro-precision

Our Micro Rod Lenses are produced using specialized micro-optical processing techniques, including precision drawing, grinding and polishing. The outer diameter tolerance is controlled within ±0.01mm, and the length tolerance within ±0.1mm, ensuring compatibility with compact optical assemblies. The lens ends are polished to achieve flat or curved profiles (plano-plano, plano-convex, plano-concave, biconvex) based on application requirements, with a surface roughness of <0.02μm to minimize light scattering. We offer glued micro rod lens assemblies combining up to four individual rod lenses, optimized for enhanced brightness. contrast and color reproduction compared to single-piece lenses. The gluing process uses high-transmittance optical cement to ensure seamless integration and environmental stability.

Core performance advantage: 

Empowering micro systems Ultraopto’s Micro Rod Lenses boast excellent eccentricity control and clear aperture index, ensuring precise light transmission with minimal distortion. The lenses function similarly to cylindrical lenses, focusing collimated light into a line or transmitting light efficiently through narrow spaces. Their ultra-small size makes them ideal for integration into rigid endoscopes, capsule endoscopes and fiber optic communication devices (WDM systems, fiber lasers). The lenses exhibit high transmittance (>90% in visible range) and low chromatic aberration, delivering sharp, clear images in medical and industrial imaging applications. With their robust construction, they withstand frequent handling and sterilization processes required in medical environments.

Full-scenario application coverage:

Cross-industry micro-adaptation Our Micro Rod Lenses are widely applied in medical, industrial and scientific fields requiring compact optical solutions. In medical endoscopes (rigid and capsule types), they form high-resolution imaging systems that provide clear internal views during minimally invasive procedures. In fiber optic communication, they enable efficient light coupling and beam shaping in wavelength division multiplexers (WDM) and fiber lasers. For micro-imaging systems, they deliver high-magnification views in compact microscopes and inspection tools. The lenses also find use in industrial endoscopes for machinery inspection, optical active devices and laboratory micro-optical experiment platforms. Their versatility and miniaturization make them indispensable in modern compact optical technologies.

Customized Services: 

Meeting Personalized Needs

As a leading manufacturer of micro-optical components, Ultraopto provides fully customized Micro Rod Lens solutions to meet your unique application requirements. Our professional R&D team can tailor key parameters including diameter (0.5mm - 5mm), length (0.5mm - 30mm), and lens shape (plano-plano, plano-convex, etc.). substrate material and curvature radius. We support custom glued lens assemblies with multi-element combinations and can optimize designs for specific endoscope viewing angles (0°-120°). All custom lenses undergo multi-stage strict quality inspection, including dimensional measurement, eccentricity testing, transmittance verification 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 micro-optical manufacturing technology and a complete quality control system, Ultraopto ensures stable batch supply and consistent product quality. Our production processes adhere to medical and industrial optical standards, with each Micro Rod Lens subjected to rigorous testing using specialized micro-optical measurement equipment. We provide professional technical consultation on lens selection, system integration and sterilization compatibility, helping you optimize compact optical designs. Whether you need standard products for endoscope manufacturing or custom solutions for cutting-edge micro-optical systems, Ultraopto’s Micro Rod Lenses deliver reliable performance and exceptional value.

For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Micro Rod Lenses, please contact our professional sales and technical team through the official website, and we will provide you with efficient, personalized and professional optical solutions.