KEYENCE LV-S71R Ultra-Small Retro-Reflective Laser Sensor
The LV-S71R is a high-performance laser sensor head from Keyence’s LV Series, designed for precision detection where space is limited. As a retro-reflective model, it utilizes a visible red semiconductor laser to provide a sharp, well-defined beam. This sensor is engineered to detect targets accurately regardless of surface color or texture, making it a versatile solution for advanced industrial automation.
Technical Specifications
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Model: LV-S71R (Retro-reflective type)
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Light Source: Visible Red Semiconductor Laser (Wavelength: 660 nm)
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Laser Class: Class 1 (FDA (CDRH) Part 1040.10, IEC 60825-1)
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Detecting Distance: Up to 500 mm (when used with P-Series reflectors)
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Beam Diameter: Approx. ø0.5 mm (at a distance of 100 mm)
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Enclosure Rating: IP67 (IEC60529)
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Ambient Temperature: -10 to +50 °C (No freezing)
High-Precision Detection Technology
The LV-S71R is distinguished by its ultra-small beam diameter, which allows it to detect miniature targets through extremely narrow gaps. The coaxial optical system ensures that the emitted and received light travel along the same axis, eliminating «blind zones» even at very close ranges.
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Stable Sensing: The Class 1 laser provides a safe yet powerful light source that maintains stability in environments with fluctuating ambient light.
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Compact Integration: Its miniature housing allows for installation in tight mechanical assemblies where standard sensors cannot fit.
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Superior Durability: With an IP67 rating, the LV-S71R is resistant to dust and water ingress, ensuring long-term reliability on the factory floor.
Typical Applications and Compatibility
The KEYENCE LV-S71R is widely utilized in the electronics, pharmaceutical, and packaging industries for:
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Component Verification: Detecting the presence or orientation of small parts on a conveyor.
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Edge Positioning: High-accuracy edge control for film, wafers, or metallic sheets.
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Clear Target Detection: When used with appropriate settings on the amplifier, it can reliably detect transparent or semi-transparent objects.
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Amplifier Compatibility: Designed for use with Keyence LV-N series and LV-S series digital laser amplifiers.
