El tipi lazer telemetre
The accuracy of the laser rangefinder mainly depends on the calculation accuracy of the time between the laser emission and the reception of the instrument. According to the technology used and the application, the laser rangefinder can be divided into a conventional laser rangefinder with an accuracy of about 1 meter ( Mainly used for outdoor sports, hunting, etc.) and high-precision laser rangefinders used in surveying and mapping, land measurement, construction, engineering applications, military and other occasions that require high accuracy.
The phase method rangefinder is a rangefinder that modulates the phase of the laser and obtains the distance by measuring the phase difference of the reflected laser. Since the reflected laser phase needs to be detected, the received signal needs to have a strong intensity. Considering the safety of the human eye, the same telescopic system as the pulsed laser rangefinder cannot be used, and the range is small. , the typical range of distance measurement is 0.5mm to 150 meters, the general phase method laser rangefinder uses 635nm (visually red) laser as the debugging object, also commonly known as infrared rangefinder, but in fact the definition of laser is not based on The color is defined by the color, and if the 635-nanometer laser rangefinder is directly irradiated to the human eye, it will cause irreversible damage, please use and protect the reader correctly.
Since the speed of the ultrasonic wave in the air is greatly affected by temperature, humidity, air pressure, etc., the measurement error is large, and because the ultrasonic wavelength is long, the propagation distance is short, so the general ultrasonic range finder The measurement distance is relatively short. , the measurement accuracy is relatively low. However, using the characteristics of ultrasonic wave propagation in a fan plane, its detection range is larger than that of photoelectric rangefinders. It is widely used in safety protection, cable height measurement, obstacle detection and other fields in practical engineering.
Laser rangefinders have been widely used in the following fields: electric power, water conservancy, communication, environment, construction, geology, police, fire protection, blasting, navigation, aviation, railway, anti-terrorism/military, agriculture, forestry, real estate, leisure/outdoor sports etc.
With slope compensation but no slope compensation switch button: It is only used for daily training, but it can accurately measure distances whether it is on a horizontal plane or with slopes, inclinations, etc. Although this type of rangefinder is only suitable for daily training, not all golfers are professional players. It is enough to use this type of rangefinder to improve their skills every day and use them frequently. Therefore, the price is relatively cheap and moderate, because the demand is large, so there are more in the market.
In fact, this purchase is a misunderstanding. It is impossible for the rangefinder to fully meet the conditions of the parameters, and there are many interference factors, such as harsh environment, complex terrain and the actual measurement target. When purchasing, if the user wants to measure the effect of 600 meters, do not choose a rangefinder with a parameter of 600, because this may not achieve the data you want to measure.
Now the price of laser rangefinders is very unstable in the market, so many users think that a product with a high price is good when purchasing, regardless of its performance and suitability. Often they don't start complaining until they use it, and then have to spend money on other styles.
So everyone remembers when buying a rangefinder: the price is not the point, the point is the product itself. Look at the product functions clearly, choose according to your own usage habits and needs, and seek professional guidance if necessary.
