The Keyence F-4HA Reflective Lens is a compact, high-performance accessory designed to enhance the accuracy and versatility of fiber optic sensor systems. By focusing the beam into a small, concentrated spot, this lens allows for highly precise detection of micro-scale objects and subtle variations in target surfaces, making it an indispensable tool for industries requiring fine-detail inspection.

A defining feature of the F-4HA is its small beam spot capability, which enables the sensor system to detect very small objects or fine surface features that would otherwise be difficult to measure with a standard fiber optic sensor. This precision is especially beneficial in applications such as semiconductor inspection, electronic component assembly, or quality control in precision machining, where micro-level detection is essential.

The lens is designed for compatibility with specific Keyence fiber units, including the FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, and FU-35TG models. This compatibility ensures that the optical characteristics of the lens and fiber unit align perfectly, resulting in stable detection performance and ease of integration. By combining with these fiber units, the F-4HA enables users to tailor their sensing solution to specialized tasks requiring enhanced focus and accuracy.

The short detection focal distance of 15 ±2 mm makes the F-4HA particularly well-suited for close-range precision sensing. At this distance, the lens achieves reliable detection performance, enabling applications where space constraints require the sensor to be positioned close to the target. This fixed focal length ensures consistent performance without the need for constant recalibration, improving ease of use and reliability in production environments.

In addition to its optical performance, the F-4HA demonstrates robust environmental resistance. Capable of withstanding temperatures from -30 to +70 °C, it operates reliably across a wide range of industrial conditions, from cold storage to high-temperature manufacturing settings. Its compact and lightweight construction—only 2 g—makes it easy to install, even in delicate or space-constrained equipment, without adding unnecessary load or complexity.

By integrating the F-4HA with a compatible fiber optic amplifier, users benefit from a complete high-precision detection system that combines the flexibility of fiber optics with the accuracy of a focused beam lens. This synergy allows the detection of small parts, positioning of tiny components, or recognition of micro-defects with remarkable accuracy and repeatability.

In summary, the Keyence F-4HA Reflective Lens is an essential accessory for achieving small-spot precision in fiber optic sensing applications. With its focused optical design, compatibility with specialized fiber units, short focal distance, and durable construction, it provides engineers and manufacturers with a reliable solution for high-accuracy detection in demanding industrial environments.