Technical Overview

Class 1 coaxial retroreflective digital laser sensor with 0.1-5m range, ø1mm spot, IP40, and 655nm red semiconductor laser for high-precision object detection.

Key Features

User-friendly, high precision laser sensing capabilities.
Coaxial retroreflective type with a spot diameter of approx. Ø1 mm at 1 m sensing distance.
Compliant with FDA Class 1 laser regulations and IEC/EN/JIS/GB/KS standards.
Offers multiple sensing ranges: 0.1 to 5 m (U-LG), 0.1 to 3 m (STD), 0.1 to 1 m (FAST/H-SP).
Equipped with a spot-size adjuster for easy and accurate beam alignment.
Industry standard mounting pitch (25.4 mm) for compatibility with existing brackets.
Dual 4-digit digital displays facilitate easy setting of threshold and monitoring of incident light intensity.
MODE NAVI customized function allows storage and easy recall of frequently used settings.
M.G.S. function provides accurate sensing of minute variations for transparent or close-range objects.
Automatic interference prevention function allows up to 4 sensors to be mounted close together.
Features NPN open-collector transistor two outputs.
Red semiconductor laser emitting element with 655 nm peak wavelength and 1 mW max output.
IP40 protection rating (IEC) for environmental resistance.

Technical Specification Matrix

Parameter	Value
Sensing Range (U-LG mode)	0.1 to 5 m (0.328 to 16.404 ft)
Sensing Range (STD mode)	0.1 to 3 m (0.328 to 9.843 ft)
Sensing Range (FAST mode)	0.1 to 1 m (0.328 to 3.281 ft)
Sensing Range (H-SP mode)	0.1 to 1 m (0.328 to 3.281 ft)
Laser Classification	Class 1 (FDA/IEC/EN/JIS)
Emitting Element	Red semiconductor laser
Max. Output	1 mW
Peak Emission Wavelength	655 nm
Protection	IP40 (IEC)
Ambient Temperature	-10 to +55 °C (+14 to +131 °F) (No dew condensation or icing allowed)
Storage Temperature	-20 to +70 °C (-4 to +158 °F)
Ambient Humidity	35 to 85% RH (No dew condensation or icing allowed)
Storage Humidity	35 to 85% RH
Ambient Illuminance	Incandescent light: 3,000 lx or less at the light-receiving face
Voltage Withstandability	1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation Resistance	20 MΩ or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration Resistance	10 to 500 Hz frequency, 1.5 mm (0.059 in) double amplitude or maximum acceleration 98 m/s² in X, Y and Z directions for two hours each
Shock Resistance	98 m/s² acceleration (10 G approx.) in X, Y and Z directions three times each
Material (Enclosure)	PBT (Mounting part: PEI), Lens cover: Acrylic
Cable	0.1 mm², single core two parallel shielded cables, 2 m (6.562 ft) long (Connector for amplifier attached)
Physical Weight (kg)	0.03
Dimensions L x W x H (cm)	3.1 x 1.12 x 1.55

Industrial Applications

1. High-Precision Roll Material Monitoring

The Panasonic LS-H91F-A's coaxial retroreflective sensing and precise spot diameter of ø1 mm at 1m distance enable accurate measurement of remaining material on sheet rolls.

Problem Solved

Prevents material shortages or production stoppages by continuously monitoring the precise amount of material left on sheet rolls, ensuring timely replenishment in manufacturing.

Coaxial retroreflectivesheet roll monitoringmaterial inventoryprecision measurementø1mm spot diameter

2. Micro-Object Detection in Electronics Assembly

The LS-H91F-A sensor, with its Class 1 laser and precise 1mW output at 655nm, offers fine detection capabilities for minute objects. Its small spot diameter (ø1mm) and high precision make it suitable for verifying the presence or orientation of small component pins.

Problem Solved

Ensures quality control and accurate positioning of tiny electronic components, such as verifying the presence or orientation of pins on PCBs during automated assembly.

Electronic componentspin detectionmicro-object sensingprecision positioningquality controlClass 1 laser

3. Accurate Positioning for Automated Production Lines

The LS-H91F-A offers a reliable sensing range up to 5 meters with Class 1 laser safety, making it suitable for precise object positioning and presence detection in automated production lines. Its coaxial retroreflective nature is ideal for detecting objects with consistent reflective properties, and the M.G.S. function refines detection for varying object types.

Problem Solved

Eliminates positioning errors and ensures consistent product flow on high-speed conveyor systems, preventing jams or misalignments in automated manufacturing processes.

Automated production linesobject positioningpresence detectionconveyor systemscoaxial retroreflective sensorM.G.S. function

Panasonic LS-H91F-A Coaxial Retroreflective Digital Laser Sensor

Panasonic LS-H91F-A Coaxial Retroreflective Digital Laser Sensor

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. High-Precision Roll Material Monitoring

2. Micro-Object Detection in Electronics Assembly

3. Accurate Positioning for Automated Production Lines