CAP Lens for Laser Packaging and Optical Communication Modules

The CAP Lens from Hobbite is a precision optical component that combines a high-quality glass lens with a metal cap structure. This integrated design not only simplifies the optical alignment process but also significantly enhances the assembly efficiency of optical communication devices. By utilizing a stainless steel Cap (SS304, SS303, or SS316), the lens maintains excellent structural rigidity, thermal stability, and welding compatibility—ideal for automated production lines and high-density packaging environments.

Unlike conventional standalone lenses, the CAP Lens integrates optical and mechanical performance in a single module. This ensures superior repeatability, reduced assembly deviation, and consistent optical performance across multiple units.

Key Features

• Integrated Optical–Mechanical Design: The metal Cap and precision lens are assembled as a single unit, ensuring mechanical robustness and simplifying optical system integration.
• Customizable Optical Parameters: Available in a range of materials, including N-SF11, NBK7, and Silicon (Si), the CAP Lens can be designed to meet wavelength requirements from 1260 nm to 1650 nm, or customized for other spectral ranges.
• High-Performance Coating: Anti-reflective coatings are applied on both surfaces, achieving transmission > 98% and reflection < 0.25%, effectively minimizing signal loss in optical communication systems.
• Precision Alignment and Assembly: Tight tolerances (dimension ± 0.05 mm, coaxiality ± 0.02 mm) guarantee accurate positioning within compact optical modules, ensuring stable optical axis alignment.
• Flexible Structural Design: Multiple cap sizes and appearance options are available. The metal housing can be polished, plated, or anodized based on customer requirements for appearance or corrosion resistance.
• Supports Automated Manufacturing: Designed for high-volume, automated assembly, reducing manual alignment steps and improving yield rate in optical packaging lines.

Applications

The CAP Lens is widely used in optical communication modules, laser packaging, and integrated photonic assemblies, including:

• Butterfly laser modules
• BOX-packaged laser modules
• PON (Passive Optical Network) laser modules
• ITLA (Integrable Tunable Laser Assembly) modules

Additionally, it is suitable for fiber coupling, collimation, and beam shaping applications in high-precision optical systems.

Ordering Information

Model Format: H01–XXXX–XX–XXXX

• XXXX: Represents the operating wavelength (e.g., 1310 = 1310 nm; 1550 = 1550 nm).
• XX: Represents the optical angle (e.g., 06 = 6°, 08 = 8°).
• XXXX: Represents the metal dimension (e.g., 6030 = OD 6.0 mm × L 3.0 mm).

Example: H01–1550–06–6030 → 1550 nm operating wavelength, 6° angle, 6.0 mm OD, 3.0 mm length.

Why Choose Hobbite CAP Lens

• Extensive Customization Options for lens curvature, cap geometry, and coating spectra.
• High Manufacturing Precision supported by automated optical alignment systems.
• Stable Optical Performance under varying temperature and vibration conditions.
• Trusted by global optics manufacturers for reliability in telecom-grade modules.