Panasonic LS-H21 Digital Laser Sensor Head

Technical Overview

Compact diffuse reflective laser sensor head with a 30-1000mm sensing range, IP40 protection, and multi-turn spot adjuster. Requires external amplifier.

Key Features

Diffuse reflective type sensor head.
Sensing range up to 1,000 mm (U-LG mode).
Multi-turn adjuster for spot shape.
IP40 protection rating (IEC).
Operates in ambient temperatures from -10 to +55 ℃.
Designed for opaque and translucent target detection.
Equipped with a 2-meter fixed cable with connector.
Requires a separate LS-400 series amplifier.

Technical Specification Matrix

Parameter	Value
Product Type	Digital Laser Sensor Head (Diffuse Reflective Type)
Sensing Range (U-LG mode)	30 to 1,000 mm
Sensing Range (STD mode)	30 to 500 mm
Sensing Range (FAST mode)	30 to 300 mm
Sensing Range (H-SP mode)	30 to 300 mm
Protection Rating	IP40 (IEC)
Ambient Operating Temperature	-10 to +55 ℃
Ambient Storage Temperature	-20 to +70 ℃
Ambient Operating Humidity	35 to 85 % RH
Ambient Storage Humidity	35 to 85 % RH
Voltage Withstandability	1,000 V AC for 1 min
Insulation Resistance	20 MΩ or more (250 V DC megger)
Vibration Resistance	10 to 500 Hz, 1.5 mm double amplitude or 98 m/s² (X, Y, Z for 2 hrs)
Shock Resistance	98 m/s² (10 G approx., X, Y, Z three times each)
Emitting Element	Red semiconductor laser, Class 2 (IEC / EN / JIS / GB / KC)
Max. Laser Output	3 mW
Peak Emission Wavelength	655 nm
Enclosure Material	PBT (Mounting part: PEI)
Lens Cover Material	Acrylic
Cable Length	2 m
Cable Type	0.1 mm², single core two parallel shielded cables
Physical Weight (kg)	0.03
Dimensions L x W x H (cm)	0 x 0 x 0

Industrial Applications

1. High-Speed Component Detection on Assembly Lines

This sensor can accurately detect the presence and position of small components or products moving at high speeds on automated assembly lines. Its "FAST mode" sensing range and compact form factor allow for precise, non-contact monitoring in tight integration spaces.

Problem Solved

Ensures accurate parts feeding and quality control by verifying component presence, preventing assembly errors and line stoppages due to missed or misplaced items.

High-speed detectionnon-contact sensingautomated assemblycompact form factorquality controlpresence detection30-300mm range

2. Material Sorting and Handling in Dry Industrial Environments

Leveraging its wide sensing range (up to 1 meter) and ability to detect both opaque and translucent objects, the LS-H21 is suitable for automated material sorting and inventory management systems in environments where significant dust or moisture are not present.

Problem Solved

Automates the identification and segregation of different materials or packages based on their presence and characteristics, improving efficiency and reducing manual labor in sorting processes.

Material sortinginventory managementdiffuse reflective30-1000mm rangeIP40opaque/translucent detection

3. Precision Positioning for Robotic End-Effectors

The sensor's multi-turn spot-shape adjuster and high-precision laser allow for delicate and accurate positioning feedback for robotic grippers and manipulators, particularly when handling small or precisely placed items. Its lightweight design is ideal for end-of-arm tooling.

Problem Solved

Provides critical real-time distance and presence data to robotic systems, enabling precise grasping and placement of objects, reducing errors and potential damage in automated handling tasks.

Robotic positioningend-of-arm toolingprecision sensingspot-shape adjustmentdistance measurementcompact design30g weight