Half Ball Lens
Half Ball Lenses are precision optical components with a hemispherical surface designed for efficient light collection, focusing and coupling applications. With high numerical aperture, excellent light gathering capability and low optical distortion, Chenyu Optics manufactures half ball lenses in BK7, fused silica and sapphire, uncoated or with UV AR, VIS AR and NIR AR coatings.
Half Ball Lens Overview
Half Ball Lenses are precision optical components with a hemispherical surface designed for efficient light collection, focusing and coupling applications.
With high numerical aperture, excellent light gathering capability and low optical distortion, half ball lenses provide improved coupling efficiency and imaging performance. They are widely used in fiber coupling systems, laser applications, optical sensors, microscopy and precision imaging systems.
Chenyu Optics supports custom half ball lens manufacturing according to customer drawings, including custom diameter, material and coating design for prototype and repeat production.
Key Advantages of Half Ball Lens
Fiber Coupling & Light Collection Systems
Half ball lenses are widely used for efficient light collection and coupling in fiber coupling systems, laser applications and optical sensor assemblies.
Typical Specifications of Half Ball Lens
| Material Options | BK7, Fused Silica, Sapphire |
|---|---|
| Optical Function | Light collection / Focusing / Coupling |
| Numerical Aperture | High NA design |
| Transmission | High optical transmission |
| Surface Accuracy | λ/4 – λ/10 @ 633 nm |
| Surface Quality | 20-10 / 40-20 scratch-dig |
| Wavefront Quality | Low distortion |
| Coating Options | Uncoated, UV AR, VIS AR, NIR AR, custom coating |
Lens Geometry & Optical Principle
Why Choose Chenyu Optics for Half Ball Lens
Chenyu Optics focuses on drawing-based precision lens manufacturing for fiber coupling, laser, sensing and imaging optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard half ball lenses.
Manufacturing Capability for Half Ball Lens
Precision Polishing
Precise polishing and dimensional control to achieve high numerical aperture performance and efficient light collection.
Optical Coating
UV AR, VIS AR and NIR AR coating options for fiber coupling, laser and sensing applications.
Inspection & Packaging
Dimensional inspection, surface review, optical performance checking and protective packaging before shipment.
Custom Manufacturing Options for Half Ball Lens
Dimensions & Diameter
Custom diameter can be manufactured according to customer drawings, with precision hemispherical geometry.
Surface & Optical Quality
Surface accuracy, surface quality and wavefront quality can be selected according to numerical aperture and coupling performance requirements.
Coating & Wavelength Design
Uncoated, UV AR, VIS AR, NIR AR and custom AR coatings can be specified for fiber coupling, laser or broadband applications.
Light Collection Lens Comparison
| Half Ball Lens | Ball Lens | Aspheric Lens | Plano-Convex Lens | |
|---|---|---|---|---|
| Geometry | Half sphere, one flat surface | Full sphere | Non-spherical curved surface | One flat, one convex surface |
| Numerical Aperture | High | Very high | Application-dependent, can be high | Moderate |
| Typical Function | Light collection, focusing, coupling | Omnidirectional light collection and coupling | Aberration-corrected focusing | General focusing and collimation |
| Typical Applications | Fiber coupling, sensors, microscopy | Fiber coupling, LED collimation, sensing | Laser focusing, imaging systems | Focusing systems, laser collimation |
Applications of Half Ball Lens
Fiber Coupling Systems
Efficient light collection for fiber-optic coupling applications.
Laser Beam Focusing Systems
High NA focusing for laser optical systems.
Optical Sensor Assemblies
Light collection for optical sensing and detection.
Microscopy Systems
High NA light collection for microscopy imaging paths.
Imaging Systems
Precision light collection for imaging optical systems.
Photodetection Systems
Efficient light gathering for photodetection applications.
Half Ball Lens FAQ
What is a half ball lens used for?
A half ball lens is mainly used for light collection, focusing, and optical coupling applications requiring high numerical aperture.
What is the advantage of a half ball lens in fiber coupling?
Its curved surface provides efficient light collection and improves coupling efficiency between optical components.
Which materials are available for half ball lenses?
Common materials include BK7, fused silica, and sapphire, selected according to wavelength and application requirements.
Can half ball lenses be customized?
Yes. Diameter, material, surface quality, and AR coatings can be customized according to system requirements.
What information should I provide for a quotation?
Please provide diameter, material, surface accuracy, surface quality, coating requirement, quantity and drawing if available.
Where can I learn more about lens design?
Additional information on lens design can be found from Edmund Optics.
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Need Custom Half Ball Lenses?
Send us your drawing, diameter, material preference, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable half ball lens manufacturing suggestion.