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LUNI

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Testing laser systems / Universal station for testing laser range finders

From the point of optics the laser range finders can be divided onto several groups: 1. Dual channel LRFs with integrated sight (two separate optical channels (receiver and transmitter) and aiming system integrated with transmitter or receiver. The channels are located at very short distance from one to another. The aiming device can be optical sight, VIS-NIR camera, or night vision device. 2. Dual channel LRFs with a sight as a third optical channel ocated at short distance to transmitter or receiver. 3. Dual channel LRFs with an external sight located at significant distance from receiver or transmitter. 4. Dual channel LRFs built using an external thermal imager as a sight. 5. Single channel LRFs built using using a single coaxial optics channel (receiver is integrated with transmitter and sometimes also with an aiming device into one optical system) All these types of LRFs can be tested using LUNI but with some limitations. Precision drawings of internal channel of single channel LRF is needed to prepare adapters needed to do testing such LRFs. Precision drawings are needed also in case of dual channel LRFs with an external sight located at significant distance from receiver or transmitter. Next, LRFs tested using LUNI can operate at different wavelengths located in spectral band from 800nm to 1700nm. Typical calibrated wavelengths are: 910nm, 1064nm, 1530nm, 1550nm, 1570nm. Other wavelengths are optional. Change of wavelengths of LRF is done my manual exchange of pulsed light source. Further on, LUNI is mostly targeted for testing medium/long range LRFs of maximal operational distance from about 1km to over 40km. However, short range LRFs can also be tested (distance as short as 40m can be simulated). The only limitation on LUNI is requirement to be used at typical laboratory/workshop conditions. It is not optimized to be used at extreme field conditions. LUNI is a modular station built from following blocks: Configuration A 1. CDT12100HR off-axis reflective collimator, 2. SOA set of optical attenuators, 3. LSC set of laser sensing cards, 4. CAP card pocket, 5. UPB universal projecting block 6. CLD set of exchangeable calibrated laser diodes 7. OR optical receiver 8. OTR optical trigger, 9. XNAS angular stage, 10. HEC camera, 11. UPB Control program, 12. Pulse Browser program, 13. MET Control program, 14. Laptop. Configuration B Additional blocks: 1. LSR10 laser beam profiler 2. BOR computer program Configuration C Additional blocks: 1. MTP multi-target projector 2. MLS set of multi light sources, 3. RUD reference uniform detector, 4. LATRA Control program.

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