Detailed LR1500E4 Specifications
Every value below is bound to the model source named on this page. Qualifiers and test conditions are retained; missing values are not inferred.
Optical parameters
| Parameter | Value | Source condition |
|---|---|---|
| Laser wavelength | 905 nm ±5 nm | LR1500E4 controlled source technical table |
| Laser beam divergence | <6 mrad (small laser spot) | LR1500E4 controlled source technical table |
| Optical material | Resin aspherical lens | LR1500E4 controlled source technical table |
| Laser safety class | IEC Class I | Source-stated classification or rating; not independently certified by this page |
Mechanical and environmental
| Parameter | Value | Source condition |
|---|---|---|
| Receiving aperture | 9.2 × 14.5 mm | LR1500E4 controlled source technical table |
| False alarm rate | ≤1% | LR1500E4 controlled source technical table |
| Baud rate | 115200 bps | LR1500E4 controlled source technical table |
| Startup time | ≤200 ms | LR1500E4 controlled source technical table |
| Operating temperature | -20°C to +55°C; -40°C customizable | LR1500E4 controlled source technical table |
| Storage temperature | -40°C to +60°C | LR1500E4 controlled source technical table |
| Protection rating | IP67 inside lens cavity | Source-stated classification or rating; not independently certified by this page |
| Dimensions | 25.65 × 14.2 × 26.2 mm (rectangular) | LR1500E4 controlled source technical table |
| Weight | ≤10 g | LR1500E4 controlled source technical table |
| Shock resistance | 1000 g/ms (10 times/s along optical axis) | LR1500E4 controlled source technical table; source test wording retained |
| Vibration resistance | 5–50–5 Hz, 1 octave/min, 2.5 g | LR1500E4 controlled source technical table |
| Reliability | MTBF ≥1500 h | LR1500E4 controlled source technical table |
Basic ranging performance
| Parameter | Value | Source condition |
|---|---|---|
| Measurement range | 4–1500 m; maximum 1800 m at night | Formal source table; nighttime value is source-stated and visibility/target qualification is not supplied in the row |
| Ranging accuracy | Not specified in the source table | LR1500E4 controlled source technical table; the parameter row is present but its value cell is blank |
| Measurement frequency | 2–10 Hz, adaptive (higher refresh rates customizable) | Formal source table; product narrative and functional section contain separate frequency wording |
| Measurement accuracy rate | ≥98% | LR1500E4 controlled source technical table |
| Power consumption (short range) | ≈0.4 W | LR1500E4 controlled source technical table |
Electrical and communication interface
| Parameter | Value | Source condition |
|---|---|---|
| Communication interface | UART-TTL (customizable) | LR1500E4 controlled source technical table |
| Supply voltage | 3.3–5 V | LR1500E4 controlled source technical table |
| Inrush current | ≈350 mA | LR1500E4 controlled source technical table |
| Sleep power consumption | <1 mW | LR1500E4 controlled source technical table |
| Standby power consumption | ≈0.2 W | LR1500E4 controlled source technical table |
| Operating power consumption | ≈1 W | LR1500E4 controlled source technical table |
Functional Description
External-circuit enable and disable place the module into normal operation or reduce external-circuit power consumption.
Single measurement triggers one target measurement. For a low-reflectivity target, the source says the module repeats measurements until stable distance data is obtained and then reports the result through the serial interface.
Continuous measurement repeats target measurements. The source functional section states typical 2 Hz or 5 Hz operation and up to 30 Hz for a customized version; the model-specific formal frequency row remains controlling.
Electrical Interface Definition
Signal names and directions are transcribed from the model source.
| Pin | Signal | Source-stated function |
|---|---|---|
| 1 | GND | Power negative |
| 2 | VCC | Power positive |
| 3 | I/O (reserved) | Reserved for expansion |
| 4 | TXD | Signal output, ranging module to host |
| 5 | RXD | Signal input, host to ranging module |
| 6 | SW-SHOT | Function enable; no public default polarity is stated |
Mechanical Dimension Drawing and Electrical Interface Diagram
These figures are extracted from the named model source without generative modification.
Pulsed Time-of-Flight Engineering Context
The public LR1500E4 source used here does not state the internal timing architecture. The equation below describes pulsed time-of-flight ranging generally and is not presented as an additional LR1500E4 specification.
Real performance also depends on target reflectivity and area, incidence angle, atmospheric attenuation, receiver aperture, background light, detector response, timing thresholds and contamination of the optical path.
What the verified data supports
These are traceable design inputs, not unsupported superlatives or guaranteed field outcomes.
Performance envelope
Measurement range: 4–1500 m; maximum 1800 m at night · Ranging accuracy: Not specified in the source table
Timing and output
Measurement frequency: 2–10 Hz, adaptive (higher refresh rates customizable)
Electrical integration
Supply voltage: 3.3–5 V · Communication interface: UART-TTL (customizable) · Sleep power consumption: <1 mW
Mechanical integration
Dimensions: 25.65 × 14.2 × 26.2 mm (rectangular) · Weight: ≤10 g · Operating temperature: -20°C to +55°C; -40°C customizable
Source-stated application context
Application labels indicate where the source proposes evaluation; they do not prove fitness without system testing.
- Auxiliary ranging in handheld night-vision devices, thermal imagers, telescopes and laser illuminators
- Border-security monitoring, aviation, communications, railway, law-enforcement, smart-water-conservancy and outdoor-sports ranging scenarios
Confirm before selection
- Define target size, reflectivity, incidence angle and required detection probability.
- Reproduce sunlight, visibility, weather and optical-window conditions in acceptance testing.
- Verify voltage tolerance, peak current, grounding, interface levels, baud rate and connector revision.
- Separate accuracy, repeatability and displayed resolution in host requirements.
- Confirm mounting datum, boresight, field of view, enclosure sealing and thermal path.
- Assess accessible emission and labeling again after integration into the finished equipment.
Questions to resolve before design release
Does the maximum stated range apply to every target?
No. Use the reflectivity and environmental conditions shown beside the range row. Smaller, darker, oblique or partially obscured targets and degraded visibility can reduce received signal.
Are resolution, repeatability and accuracy interchangeable?
No. Resolution is the reporting increment, repeatability describes variation under repeated conditions, and accuracy describes closeness to the reference distance under the stated test method.
Is the finished product automatically IEC Class I?
No. A module-level source statement does not replace the accessible-emission and failure-condition assessment of the finished equipment, its window, controls, service access and labeling.
Which documents control wiring and interface release?
The ordered connector drawing, pin definition and approved interface document control the design.
Product evidence and general technical context
The model PDF controls product claims. Public references support only the general engineering explanations and must not be used to infer a missing model value.
- LR1500E4 verified product specificationModel-specific product evidence; SHA-256 is shown above.
- System Design of a Pulsed Laser RangefinderOptical Engineering 30(3), 1991 - link budget, background, noise, detection and range error.
- The Short-Range, High-Accuracy Compact Pulsed Laser Ranging SystemSensors 22(6), 2146, 2022 - pulsed-ToF equation, timing error, reflectivity and temperature effects.
- Laser system range calculations and the Lambert W functionApplied Optics 48(4), B1-B7, 2009 - range performance versus atmospheric transmission, target and system parameters, and threshold SNR; its 1.06 µm example is general context, not ERDI model data.
- Monostatic all-fiber rangefinder systemApplied Optics 54(25), 7687-7694, 2015 - a measured case study of shared-aperture geometry and receiver-recovery loss; it does not establish an ERDI model limit.
- Light Transmission in Fog: The Influence of Wavelength on the Extinction CoefficientApplied Sciences 9(14), 2843, 2019 - measured and modeled wavelength-dependent fog attenuation.
- IEC 60825-1:2014Laser-product classification and accessible-emission requirements; final equipment requires system-level assessment.