High-Purity Fused Silica Plano-Convex Lens with AR Coating
A Plano-Convex Lens has one flat surface and one outward-curving surface, designed to converge light with minimal distortion. Unlike standard spherical lenses, this design provides efficient focusing while reducing spherical aberration, making it ideal for precision optical systems.
Key Features
- Optimized Light Focusing: The Plano-Convex design directs light precisely to a focal point, resulting in reduced spherical aberration.
- Wide Size Flexibility: Diameters range from 4 to 80 mm; focal lengths range from 10 to 200 mm.
- High-Precision Surface Finish: 20-10 scratch-dig with < λ/4 flatness ensures consistent beam quality.
- Material Versatility: Almost any optical material can be processed; BK7 and Fused Silica are our most mature solutions.
- Custom Integration Ready: Coatings, sizes, and shapes can be adapted for compact or miniaturized optical assemblies.
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At Hobbite, we excel in custom optical components, delivering lenses for small-scale components where compact size and high performance are essential. While we can process nearly any optical material, our team has deep expertise with BK7 and Fused Silica, ensuring excellent surface quality, low wavefront error, and reliable performance for laser, imaging, or sensing applications.
Material Options & Customization
Our Plano-Convex Lenses can be fabricated in a wide range of optical materials to suit your specific needs:
- BK7: High transparency and thermal stability make it ideal for visible and near-infrared systems. Our most refined processing experience allows tight tolerances and high repeatability for small optical modules.
- Fused Silica (Quartz): Offers superior UV transmission, low thermal expansion, and high laser damage threshold. Perfect for high-power lasers, telecom fiber coupling, or UV-sensitive applications.
- Other Optical Materials: We can produce lenses from specialty glasses or crystals according to wavelength, thermal, or mechanical requirements.
Customizable parameters include:
- Lens diameter, thickness, and focal length for compact or modular systems
- Surface quality, centering, and scratch-dig precision suitable for micro-optical assemblies
- Optional AR coatings for VIS, NIR, or UV ranges
- Special geometries for integration into laser diodes, fiber collimators, or miniaturized sensors
Applications
- Laser Systems: Focus laser diode outputs or fiber-delivered beams with minimal divergence and high beam quality.
- Imaging Devices: Enhance image clarity in microscopes, cameras, projectors, and machine vision systems.
- Optical Communication: Collimate or focus light into optical fibers or transceivers for efficient signal transmission.
- Medical Instruments: Precisely direct therapeutic or diagnostic laser beams for safe and controlled application.
- Illumination: Uniformly collimated LED or lamp light for inspection systems or laboratory instruments.
- Sensing Applications: Improve beam uniformity and detection range in LIDAR, IR sensors, and spectrometers.
How to Choose (Simple Guide)
Choosing the right Plano-Convex Lens depends on your system requirements:
- Focal Length: Shorter focal lengths (10–30 mm) concentrate light for compact modules; longer focal lengths (50–200 mm) provide gentle focusing for projection or beam delivery.
- Diameter: Larger lenses capture more light but require precise mounting; smaller lenses fit miniaturized optical setups.
- Material & Customization: Any optical material can be fabricated; however, BK7 and Fused Silica are preferred for their precision and reliability.
- Coating: Select AR coatings based on wavelength to maximize transmission and reduce reflection.
Optical Lens Specifications
| Parameter | Specification |
|---|---|
| Material | BK7, Fused Silica, CaF₂, or customer-specified materials |
| Wavelength Range | 185 – 2100 nm |
| Diameter Range | 4 mm – 80 mm |
| Dimension Tolerance | +0.0 / -0.1 mm |
| Center Thickness Tolerance | ±0.05 mm |
| Sag Tolerance | +0.05 mm |
| Clear Aperture | > 85% |
| Focal Length Tolerance | ±1% (High Precision) |
| Surface Figure | λ/4 PV |
| Surface Quality | 20/10 S/D |
| Centration | < 1 arc minute |
| Coating | Custom coatings available upon request |
| Lens Type | Plano-Convex (BK7 / Fused Silica / CaF₂ options) |
