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1535 nm laser rangefinder modules
Every 1535 nm model in the catalogue in one table, with the manufacturer's test conditions on each model page. 18 modules in this band.
| Model | Max range | Accuracy | Mass | Interface |
|---|---|---|---|---|
| LRF1829C | 23 km | ±2 m | 400 g | RS-422 |
| LRF1830C | 23 km | ±2 m | 400 g | UART + RS-422 |
| LRF1525C | 15 km | ±2 m | 400 g | RS-422 |
| LRF1221C | 12 km | ±2 m | 275 g | RS-422 |
| LRF1222C | 12 km | ±2 m | 335 g | RS-422 |
| LRF1831C | 12 km | ±2 m | 410 g | RS-422 |
| LRF1017C | 10 km | ±2 m | 275 g | RS-422 |
| LRF0815C | 8 km | ±2 m | 175 g | UART + RS-422 |
| LRF0816C | 8 km | ±2 m | 58 g | |
| LRF0818C | 8 km | ±2 m | 65 g | UART-TTL |
| LRF0609C | 6 km | ±2 m | 62 g | UART-TTL |
| LRF0610C | 6 km | ±2 m | 90 g | UART + RS-422 |
| LRF0612C | 6 km | ±2 m | 58 g | |
| LRF0405C | 4 km | ±2 m | 32 g | UART-TTL |
| LRF0305C | 4 km | ±1 m | 14 g | UART-TTL |
| LRF0306C | 4 km | ±1 m | 14 g | UART-TTL |
| LRF0105C | 3 km | ±2 m | 29 g | |
| LRF0310C | 3 km | ±1 m | 32 g |
What the 1535 nm band is for
Erbium-glass sources at 1535 nm (also written 1.54 µm) sit above the retinal-focusing range, so a module can carry two orders of magnitude more pulse energy at a stated Class 1 module level. That is how 6–23 km modules exist at 200–410 g. The cost is a larger aperture, InGaAs detection and 0.5–10 Hz rates.
What changes with the band
| 905 nm | 940 nm | 1535 nm | |
|---|---|---|---|
| Detector | Silicon APD / SiPM | Silicon, slightly lower quantum efficiency | InGaAs APD |
| Typical module mass | 1–20 g | 1–2 g | 14–410 g |
| Typical update rate | 20 Hz – 1 kHz | 50–200 Hz | 0.5–10 Hz |
| Published range band | 20 m – 3 km | 9–50 m | 3–23 km |
| Eye safety basis | Retinal hazard — low pulse energy cap | Same as 905 nm | Corneal absorption — far higher cap |
940 nm buys two things over 905 nm: a narrowband filter is more effective against daylight background, and a low-power emitter is visually quieter. It does not change the eye-safety argument — 940 nm is still focused by the eye, so pulse energy stays capped and range stays short. What it costs is quantum efficiency: slightly less return for the same optics and power.