With the continuous development of science and technology, laser rangefinding technology has entered more fields and been widely applied. So, what are some essential facts about laser rangefinding technology that we must know? Today, let’s share some basic knowledge about this technology.
1.How Did Laser Rangefinding Begin?
The 1960s witnessed the rise of laser rangefinding technology. This technology initially relied on a single laser pulse and used the Time of Flight (TOF) method for distance measurement. In the TOF method, a laser rangefinder module emits a laser pulse, which is then reflected back by the target object and captured by the receiver of the module. By knowing the constant speed of light and precisely measuring the time it takes for the laser pulse to travel to the target and back, the distance between the object and the rangefinder can be calculated. Even today, 60 years later, most distance measurement technologies still rely on this TOF-based principle.
2.What is Multi-Pulse Technology in Laser Rangefinding?
As single-pulse measurement technology matured, further exploration led to the experimental application of multi-pulse measurement technology. Multi-pulse technology, based on the highly reliable TOF method, has brought substantial benefits to portable devices in the hands of end-users. For soldiers, for instance, hand-held devices used to aim at targets face the inevitable challenge of slight hand tremors or shakes. If such tremors cause the single pulse to miss the target, accurate measurement results cannot be obtained. In this context, multi-pulse technology shows its decisive advantages, as it significantly improves the probability of hitting the target, which is crucial for hand-held devices and many other mobile systems.
3.How Does Multi-Pulse Technology in Laser Rangefinding Work?
Compared to single-pulse measurement technology, laser rangefinders using multi-pulse measurement technology do not emit just one laser pulse for distance measurement. Instead, they continuously send a series of very short laser pulses (lasting in the nanosecond range). The total measurement time for these pulses ranges from 300 to 800 milliseconds, depending on the performance of the laser rangefinder module used. Once these pulses reach the target, they are reflected back to the highly sensitive receiver in the laser rangefinder. The receiver then begins to sample the received echo pulses and, through highly precise measurement algorithms, can calculate a reliable distance value, even when only a limited number of reflected laser pulses are returned due to motion (e.g., slight tremors from hand-held use).
4.How Does Lumispot Improve the Accuracy of Laser Rangefinding?
- Segmented Switching Measurement Method: Precision Measurement to Enhance Accuracy
Lumispot adopts a segmented switching measurement method that focuses on precision measurement. By optimizing the optical path design and advanced signal processing algorithms, combined with the high energy output and long pulse characteristics of the laser, Lumispot successfully penetrates atmospheric interference, ensuring stable and accurate measurement results. This technology uses a high-frequency rangefinding strategy, continuously emitting multiple laser pulses and accumulating the echo signals, effectively suppressing noise and interference. This significantly enhances the signal-to-noise ratio, achieving precise distance measurement. Even in complex environments or with small variations, the segmented switching measurement method ensures accurate and stable results, making it a crucial technology for improving measurement accuracy.
– Dual Threshold Compensation for Rangefinding Accuracy: Dual Calibration for Extreme Precision
Lumispot also utilizes a dual-threshold measurement scheme with a core dual calibration mechanism. The system first sets two different signal thresholds to capture two critical time points of the target’s echo signal. These time points differ slightly due to the different thresholds, but this difference becomes key to compensating for errors. Through high-precision time measurement and calculation, the system can accurately compute the time difference between these two time points and fine-tune the original rangefinding result, significantly enhancing rangefinding accuracy.
5.Do High-Precision, Long-Range Laser Rangefinding Modules Occupy a Large Volume?
In order to make laser rangefinder modules more widely and conveniently used, today’s laser rangefinder modules have evolved into more compact and exquisite forms. For example, Lumispot’s LSP-LRD-01204 laser rangefinder is characterized by its incredibly small size (only 11g) and light weight, while maintaining stable performance, high shock resistance, and Class I eye safety. This product demonstrates a perfect balance between portability and durability and has been widely applied in fields such as targeting and rangefinding, electro-optical positioning, drones, unmanned vehicles, robotics, intelligent transportation systems, smart logistics, safety production, and intelligent security. The design of this product fully reflects Lumispot’s deep understanding of user needs and the high integration of technological innovation, making it a standout in the market.
Lumispot
Address: Building 4 #, No.99 Furong 3rd Road, Xishan Dist. Wuxi, 214000, China
Tel: + 86-0510 87381808.
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Email: sales@lumispot.cn
Post time: Jan-06-2025