Infrared emitting tube (IR LED), also known as infrared emitting diode, belongs to the diode class. It is a light-emitting device that can directly convert electrical energy into near-infrared light (invisible light) and emit it.

Infrared emission tubes are a product of choice in many aspects nowadays, and they can be used in many ways, making them a great product.

Infrared emission tubes are high-power infrared emission diodes using GaAlAs technology, packaged in transparent or blue plastic. Compared with standard GaAs at a similar wavelength, these emission diodes using GaAlAs technology have improved radiation power. The forward voltage roughly corresponds to standard technology under low current and high pulse current operating conditions, so these emitting diodes are ideal high-performance products as standard emitting devices.

With the further lightweighting of electronic rangefinders, modern total stations mostly design the ranging, angle measurement, and recording units as an inseparable whole in terms of optics, mechanics, and other aspects. The transmitting axis, receiving axis, and sighting axis of the rangefinder and telescope are coaxial structures. The infrared emission tube manufacturer believes that this is very advantageous for ensuring distance measurement accuracy under larger vertical angle conditions.

Early block type total stations mostly had a block type structure, where electronic speedometers, electronic theodolites, and electronic recorders were all integrated and could be used separately or combined through cables or interfaces to form a complete total station.

The method of judging the quality of infrared emitting tubes is the same as that of judging ordinary diodes. The luminous efficiency of infrared emission tubes needs to be measured using specialized instruments, while under amateur conditions, rough judgments can only be made using the pull distance method based on experience.

What are the methods to determine the infrared emission tube?

We are accustomed to referring to infrared emitting tubes and infrared receiving tubes as infrared paired tubes. The shape of the infrared tube is similar to that of a regular circular light-emitting diode. First time exposure to infrared detectors. It is difficult to distinguish between the transmitting tube and the receiving tube.

Infrared emitting tubes are generally transparent, while infrared receiving tubes are black. Multimeter judgment: When the red pen of the digital meter diode is connected to the positive terminal (transmitting tube), the receiving tube is connected in reverse.

2. Infrared emitter tube, with a concave center in the core, resembling a spotlight shaped infrared receiver tube, and an infrared photosensitive electrode on the platform in the middle of the core. The two pins of the infrared tube are one long and one short, with the long pin being the positive pole, which is the same as a regular diode.

3. Use a multimeter to measure and identify the Rx1k resistance range of a pointer type multimeter of type 500 or other models to measure the inter electrode resistance of the infrared pair tube, in order to determine the infrared pair tube.

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