Laser Distance Meters

GAOTek laser distance meters are used to measure the distance between the target the instrument. Our instrument sends a pulse of laser light to the target and measures the time it takes for the reflection to return and its ergonomic design offers a simple function for user-friendly use. GAO Tek’s laser distance meters are reliable, high quality, and inexpensive equipment that provide an accurate measuring for easier inspection or testing. It is compact, easy to carry and portable to allow the user to work in complex conditions and on-site.

A laser distance meter offers the fast speed, accuracy, versatility, safety, functionality, and convenience than the old-fashioned tape can offer when used in the field.


A laser distance meter sends out a focused pulse of light to the target and detects the reflection. The meter measures the time it takes for the pulse to get reflected then it converts this to distance. The distance is then displayed on the digital panel. Usually, a laser distance meters consists of electrical components for processing, recording, and displaying information about the distance.

The formula used to calculate the distance is Distance = ½ (Speed x Time). This raise a concern as the speed of light is 300,000 km per second, so to resolve the differences of (say) 1 cm, the meter must measure the time intervals of the order of billionths of a second.

Although, a tape may seem reliable when used in a small distance, the laser distance meters offer the same features as the tape while also being accurate up to a larger distance and able to maintained a straight measurement without bending or sagging that the tape can be a disadvantage of. The instrument also offers a choice of units for measurement for no risks of misreading.

A laser distance meters and the optical system of the device contains an infrared sensor, transmitting semiconductor laser which is located at the center of the receiving lens in an opaque cylinder (This ensures that the laser is coaxial with the photodetector and that the measurements of short distances are accurate), a relative wide laser beam is focused by the lens to offer a narrow beam at its exit and ensures a laser spot diameter of about 30mm at distances up to 50 meters. The power of the received signal is proportional to the area of the receiving lens. The shading caused by the position of the laser optical system is insignificant.

It is then controlled by a microcontroller unit, which interacts with the photodetector unit. The keyboard and the display. The power supply of the IR sensors consists of AA batteries, and the sensor can connect itself to the PC via USB.The IR sensor contains a microprocessor that controls the keyboard through a connector. The photodetector input signal is fed into an amplifier and then the amplified signal goes to the input of a fast 12-bit analog-to-digital converter (ADC). The ADC output is fed into the programmable integrated logic circuit (PILC), which does all the necessary processing. The output code goes to a microcontroller input along four lines. The distance code is converted to distance with an account for adjustment and the internal delay of the receiving-transmitting channel.

A microcircuit is used to charge the PILC and the laser has a transistorized modulator where a measurement is made after the adjustment. Lastly, it contains a battery charger circuit which is made with microcircuits and transistor. Which the transistor is used to switch the IR sensor on and off. The IR-sensor turns off when a measurement is taken, to save electric energy in the battery and the microcontroller remains connected.


GAOTek photoelectric colorimeters are reliable, accurate, and easy to use to help prevent failure in operations. It's also:

·         Compact and portable: which are suitable for working aloft and complex conditions,

·         Simple user interface and easy to use due to easy targeting bright laser

·         High and continuous performance

·         Measures up to 100 m (330 ft)

·         Software included for computer use.

·         Wide range of measurement

·         Corner angle feature offers to measure the angle of the corner

·         Automatic calculation by the meter for reducing estimating errors

·         Easy measure hard to access areas

·         No scales to interpret

·         Automatic shutdown for saving battery usage consumption

·         Multi-color visual display

·         Accurate and precise

·         Minimum/Maximum function

·         Low battery indication

·         Backlight LCD: reading in dim light conditions

·         PC connect via USB

·         Rechargeable Li-on battery that can last for more than 8 hours of use

·         Audible keypad feedback


The laser distance meters are common applications for measuring a distance between the target using the laser to calculate the difference and converts it to distance. It is frequently used in various application such as industrial sector, construction, military, 3-D modeling, forestry, sports, production processes, renovation and real estate.

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