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What are the different types of measuring light curtains available?

Update Time:2026/7/2

Measuring light curtains are primarily classified by beam spacing (resolution), detection distance, and output type. The beam spacing determines the smallest object size the system can detect — the smaller the spacing, the higher the precision.

Electronics precision components Technology measurement

Classification by Beam Spacing

TypeBeam SpacingBest ForResolution
High Precision2.5mmSmall parts, fine measurement~5mm object
Standard Precision10mmGeneral dimension measurement~20mm object
Coarse Measurement20mmLarge object detection~40mm object

DADISICK DK-QL Series Options

DK-QL32-2.5

2.5mm beam spacing, 32 optical axes, 77.5mm protection height, 0.3-1M detection. Ideal for small object measurement.

DK-QL Series 10mm

10mm beam spacing, 8-200 optical axes, 70-1990mm protection height, 0.3-6M detection. The most versatile range.

DK-QL Series 20mm

20mm beam spacing, up to 138 optical axes, 2740mm max protection height. For large-area measurement.

All DADISICK DK-QL models support RS485/RS232, 4-20mA, and 1-10V output modes, and come with TUV, UL, CE, RoSH, and GB certifications. The M12 connector ensures reliable industrial connectivity.

Selection Recommendation

For precision measurement of small components (e.g., PCB height, connector pins) → choose 2.5mm beam spacing.

For general industrial measurement (e.g., package dimensions, part sorting) → choose 10mm beam spacing.

For large object presence and profiling (e.g., vehicle dimensions, pallet detection) → choose 20mm beam spacing.

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