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Laser Displacement Sensors

KEYENCE's laser displacement sensors enable non-contact measurement of a target's height, position, or distance. By pairing multiple sensors, measurements such as thickness and width can also be performed. High-accuracy displacement sensors can be grouped into two categories: confocal and laser triangulation. Both provide accurate, reliable solutions for non-contact measurement, but depending on the application one type may offer an advantage over the other.

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High Precision Measurement (Reflective Distance Sensors)

CL-3000 series - Confocal Displacement Sensor

CL-3000 Series confocal displacement sensors are compact 1D laser displacement sensors that use a unique method to ensure high-precision measurement on any material or surface. Using a confocal sensor enables stable measurement on materials ranging from dark rubber to clear films without having to adjust mounting or measurement settings. The sensors are designed with only the lens inside the heads, making them both compact and lightweight, which is ideal for installation in narrow spaces or on robots. All electronics are kept away from the measurement location in the optical unit, providing a stable result that is unaffected by heat or electrical noise. Equipped with features like quad spot processing and optical axis alignment, this series is well suited for a variety of industries and applications, including position or thickness measurement.

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LK-G5000 series - Ultra High-Speed/High-Accuracy Laser Displacement Sensor

The laser triangulation displacement sensors of the LK-G5000 Series offer high speed and high accuracy for non-contact displacement measurement applications. The sensors utilize advanced hardware such as the RS-CMOS and HDE lens pack to provide reliable results on a range of materials by ensuring the return light is always in focus. This technology creates a sensor with superior linearity (0.02% of F.S.) and repeatability (0.005 µm). With a max sampling speed of 392 kHz, the LK-G5000 Series can reliably monitor vibrations or catch small changes in fast-moving targets. The head lineup is designed to support a variety of industries and applications, allowing users to select the ideal sensor based on their requirements for measurement range, accuracy, and beam spot size.

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LK-G3000 series - High-Speed, High-Accuracy CCD Laser Displacement Sensor

LK-G3000 Series laser displacement sensors employ high-accuracy Li-CCD and ernostar lensing to provide a flexible solution for measuring displacement. This series offers a broad range of sensor heads to support applications requiring high accuracy or large standoff and has a maximum range of 1 meter. The sensors are equipped with a function (ABLE) that automatically adjusts the settings to optimize the reflection from different surfaces, making it possible to measure translucent, rubber, or metal materials stably.

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LT-9000 series - Surface Scanning Laser Confocal Displacement Meter

The LT-9000 Series sensors combine the benefits of surface scanning with a confocal setup, providing high-resolution displacement measurement. These displacement meters utilize a tiny beam spot of just ø2 µm (ø0.000079"), that traverses the surface to produce stable results on microscopic targets and features. Surface scanning enables high-accuracy measurement of tilted or rough surfaces, while the confocal design improves reliability for thin films, making the LT-9000 Series ideal for any application where high performance is required. The built-in camera captures clear images of the surface, making it easy to identify the measurement location and align the sensor appropriately.

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Reflective Distance Sensors

IX series - Image-Based Laser Sensor

IX Series image-based laser sensors can measure height anywhere within the area. Camera-based image recognition allows the laser to detect the height of the target point even when workpieces are not perfectly aligned on the production line. The height of where the laser hits the target will vary if the target is tilted or if the target itself is different, but the IX Series can identify the difference in height against the reference. For example, in a parts assembly line, a single IX Series unit can not only check for the presence of parts, but also perform seating checks and other height-based inspections. Thanks to its ability to detect height differences, the IX Series is also free from false detections and errors in the presence of glare from glossy surfaces of metal parts or when the detection target point has the same color as the background, offering stable automatic inline differentiation.

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IL series - CMOS Multi-Function Analog Laser Sensor

IL Series CMOS multi-function analog laser sensors are reflective laser displacement sensors that provide the best-in-class detection ability and stability at reasonable cost. Stable detection is possible without tuning for workpiece types or their surface conditions, so the IL Series can be added to production lines to help make setup, changeover, and product changes easier. With a wide-ranging lineup of sensor heads, including high-accuracy models and long-range (up to 3.5 m 11.5') models, these laser sensors can be applied to diverse applications thanks to their broad dynamic range and environmental resistance. 1 μm repeatability allows for use in high-tolerance detection setups that previous sensors could not stably provide.

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Benefits of Laser Displacement Sensors

Laser Displacement Sensor Case Studies

Frequently Asked Questions About Laser Displacement Sensors