TO-CAN Molded Glass Aspherical Lens Caps

Hobbite‘s  Aspherical Lens Caps are engineered for unwavering performance in demanding network and industrial systems, delivering consistent signal integrity across a wide operational range.

Key Features

This component masterfully combines optical and mechanical functions into one compact form factor, enabling higher density packaging.

Key characteristics include:

• Low Insertion Loss: Typically as low as 0.2 dB.
• Aspheric Surface: Provides superior beam shaping and control.
• Compact Cylindrical Design: Directly compatible with standard optical module footprints.
• Broad Temperature Tolerance: Stable performance from –40°C to +85°C.
• Exceptional Durability: Built to withstand the rigors of long-term deployment.

Together, these features guarantee reliable optical coupling and robust protection for critical internal components.

Advantages

Integrating the optical surface directly into the protective cap eliminates the need for additional elements, simplifying module design and enhancing alignment stability throughout the product lifecycle.

The robust mechanical construction ensures proven resistance to vibration, thermal cycling, and handling stress—common challenges in real-world network environments. As a passive optical component, it is designed for exceptional longevity, with a typical service life exceeding 100,000 hours under standard conditions.

Why Choose an  Aspherical Lens Caps?

As optical modules trend toward miniaturization and higher integration, every component must deliver maximum functional value.

The  Aspherical Lens Caps meet this challenge by unifying critical beam control and reliable physical protection in a single, efficient device. It is the optimal choice for applications demanding precise control over insertion loss, environmental resilience, and proven long-term reliability.

It directly addresses key design requirements:

• Controlled insertion loss (~0.2 dB)
• Operation across full industrial temperature ranges
• Mechanical stability during assembly and deployment
• Seamless compatibility with common optical module architectures

Customization Options

We offer extensive customization to ensure the  Aspherical Lens Caps integrate perfectly into your unique design. Options include:

• Custom outer/inner diameters and lengths.
• Optimization of the aspheric surface for specific beam parameters.
• Alternative material selection for enhanced thermal or mechanical performance.
• Specialized surface treatments for improved environmental resistance.

These services allow the cap to be precisely adapted to your optical and mechanical requirements, ensuring optimal performance in both prototype and high-volume applications.

FAQ

Q: What is the primary function of an  Aspherical Lens cap in an optical module?

A: It serves two main purposes: protecting the delicate internal optics and facilitating stable optical coupling. Its aspheric surface actively shapes the light beam, which is key to maintaining low, consistent insertion loss.

Q: What level of insertion loss can I expect?

A: In a well-aligned system, typical insertion loss is around 0.2 dB, though the exact value depends on the specific system configuration.

Q: Are these caps suitable for harsh environments?

A: Yes. They are specifically engineered for reliable operation across a wide temperature range of –40°C to +85°C, making them ideal for industrial and outdoor network applications.

Q: How long is the expected service life?

A: As a passive component, it is designed for extreme longevity. Mean Time Between Failures (MTBF) values are typically well over 100,000 hours in standard optical module applications.

Q: Are they only for specific types of optical modules?

A: Not at all. Their design is versatile and can be found in a broad range of compact photonic assemblies, including various fiber optic transceivers.