The Keyence LK-G82 sensor head is a multi-purpose, small-spot laser displacement sensor designed to meet the demanding requirements of high-precision measurement applications. This model is part of Keyence’s LK-G Series, known for its ability to combine cutting-edge laser technology with robust optical design, enabling accurate measurement across a wide range of surfaces and environments. The LK-G82 is specifically engineered for tasks where fine spot detection, high linearity, and stable measurement are essential.

At the core of the LK-G82’s performance is its red semiconductor laser light source, which operates at a wavelength of 655 nm in the visible spectrum. The device outputs a Class II laser beam with a maximum power of 0.95 mW, balancing measurement stability with operator safety. This visible red beam allows for simple alignment during setup while maintaining compliance with international laser safety standards. With a spot size of only 70 micrometers at the reference distance, the sensor is able to capture highly localized details, making it ideal for applications such as surface profiling, thickness inspection, and fine part detection.

The sensor head offers two distinct reflection measurement modes: diffused reflection and specular reflection. In diffused reflection mode, the LK-G82 provides a measuring range of ±15 mm from the reference distance of 80 mm, accommodating matte or irregular surfaces. In specular reflection mode, the reference distance is 75.2 mm, with a measuring range of ±14 mm, optimized for smooth and reflective surfaces. This dual capability makes the LK-G82 versatile in environments where part materials or finishes may vary, ensuring reliable measurements without the need for multiple sensor models.

Accuracy is further supported by the device’s exceptional linearity of ±0.05% of full scale, which guarantees repeatability and consistency even in high-speed production settings. This level of precision enables manufacturers to maintain strict quality control, reduce measurement errors, and improve process efficiency. The stable performance is complemented by Keyence’s advanced signal processing technology, which minimizes noise and delivers accurate real-time readings.

Built with industrial environments in mind, the LK-G82 combines durability with compactness, making it easy to integrate into automated systems, inspection lines, and research setups. It is well-suited for industries such as electronics, automotive, metalworking, and precision engineering, where reliable micrometer-level measurement is critical. The sensor can be paired with compatible Keyence controllers to expand functionality, enabling advanced measurement modes, real-time data logging, and system integration.

In summary, the Keyence LK-G82 is a high-performance, small-spot laser displacement sensor that delivers superior measurement accuracy and flexibility. With its dual reflection modes, precise spot size, stable optical design, and excellent linearity, it provides engineers and manufacturers with a reliable solution for demanding inspection and measurement tasks. This makes it a valuable tool for maintaining quality and precision in modern automated production environments.