LSR L Anti-Ambient-Light Performance
Test Conclusion (LSR L – 1m)
- At a shooting distance of 1m, LSR L can capture high-quality point clouds under 80,000–100,000 lux.
- For dark-colored workpieces, as the number of laser segments increases from 1 to more, point cloud completeness keeps improving, indicating the laser stripes maintain a good signal-to-noise ratio even under direct sunlight.
- For light-colored workpieces, at 1 or 2 segments, the minimum exposure-time limit causes image overexposure and point cloud loss — but the point cloud is still generally acceptable.
Test Conditions
Test height: 1m
Test target: point cloud performance of LSR L at 1m under direct sunlight
Sunlight illuminance: 80,000–100,000 lux
Test 1: Dark-colored workpiece
| Illuminance ≈80,000–90,000 lux | Laser projection 80%, 1 segment | Laser projection 80%, 2 segments |
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| 2D image | Laser projection 80%, 3 segments | Laser projection 80%, 4 segments |
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Test 2: Dark + light-colored workpieces
| Illuminance ≈80,000–95,000 lux | 2D image | Laser projection 80%, 1 segment | Laser projection 80%, 2 segments |
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Test Result
Test workpieces: dark-colored + light-colored
Actual ambient illuminance: 80,000–95,000 lux
Left: LSR L color image
Right: LSR L depth image
Test Conclusion (LSR L – 2m)
1) LSR L: under 40,000 lux of sunlight illuminance, exposure time and laser projection frame size can be tuned to obtain a complete point cloud for cardboard boxes, crankshafts, and workpieces (including reflective objects) placed in a plastic tray.
2) LSR L: at 100% laser projection frame size, the maximum tolerable sunlight illuminance is approximately 16,000 lux for the cardboard box and 15,000 lux for the crankshaft.
Experiment Conditions
Test height: camera approximately 2m above the ground
Test objects: SF Express cardboard box, crankshaft, and various workpieces placed in a plastic tray
Object placement is shown below:
Test Data
Table 1 Cardboard box test results
| Target | Sunlight illuminance (lx) | Projection FOV (%) | Exposure time (ms) | LSR L depth image | Sunlight illuminance (lx) | Projection FOV (%) | Exposure time (ms) | LSR L depth image |
|---|---|---|---|---|---|---|---|---|
| Cardboard box | 40000 | 30 | 8 |  |
20000 | 50 | 8 |  |
| 35000 | 50 | 4 |  |
16000 | 100 | 8 |  |
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| 28000 | 50 | 4 |  |
10000 | 100 | 4 |  |
Table 2 Crankshaft test results
| Target | Sunlight illuminance (lx) | Projection FOV (%) | Exposure time (ms) | LSR L depth image |
|---|---|---|---|---|
| Crankshaft | 40000 | 50 | 4 | |
| 30000 | 50 | 8 |  |
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| 28000 | 50 | 8 |  |
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| 15000 | 100 | 20 |  |
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| 9000 | 100 | 16 |  |
Table 3 Plastic tray & workpieces test results
| Target | Sunlight illuminance (lx) | Projection FOV (%) | Exposure time (ms) | LSR L depth image |
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| Plastic tray & workpieces | 47000 | 50 | 4 |  |
| 7000 | 50 | 8 |  |
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| 7000 | 100 | 16 |  |
LSR L With Extra Optical Filter — Anti-Ambient-Light Performance
Test Conclusion
- With an add-on filter, LSR L can capture high-quality point clouds within 2m distance under a peak illuminance of 120,000–130,000 lux, by adjusting the laser frame size and number of segments.
- With an add-on filter, LSR L at 2.5m distance can capture high-quality point clouds under a peak illuminance of 120,000–130,000 lux for cardboard boxes and metal parts with favorable material/shape, again by adjusting the laser frame size and number of segments.
Test Conditions
Camera used: LSR L with an add-on filter attenuating 75% of incident light (to avoid overexposure caused by the minimum exposure limit)
| Scene photo – 12,820 lux | Scene photo – 125,000 lux | Camera height – 2m | Camera height – 2.5m |
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Test Results
| 2D image | 1700mm, 8+4+12ms, 85% frame, 4 segments | 1700mm, 8+4+16ms, 60% frame, 2 segments |
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| 2D image | 2000mm, 8+4+16ms, 60% frame, 4 segments | 2500mm, 8+4+12ms, 60% frame, 4 segments |
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PRO S Anti-Ambient-Light Performance
Test Conclusion
At a shooting distance of 1m and outdoor ambient illuminance of 80,000+ lux, PRO S can capture high-quality point clouds for common industrial workpieces; PRO S V4 outperforms cameras of other brands in anti-ambient-light capability.
Test Result
Test workpieces: dark-colored + light-colored
Left: outdoor ambient illuminance, 80,000+ lux
Middle: Mech-Eye PRO S V4 grayscale image
Right: Mech-Eye PRO S V4 depth image
NANO Anti-Ambient-Light Performance
Camera tested: NANO-M V4, at 500mm distance
Test conclusion: NANO-M V4 has a certain level of anti-ambient-light performance, mainly due to its narrowband blue filter and the shorter working distance used.
NANO ULTRA Anti-Ambient-Light Performance
Camera tested: NANO ULTRA
Test conclusion: At a height of 400mm, point clouds for non-reflective welded workpieces (e.g., angle steel) can be obtained up to 50,000 lux; for more reflective workpieces, the limit drops below 30,000 lux.
Test Conditions
Test height: 400mm
Test target: point cloud completeness for welded workpieces at 400mm
