- optar (optical automatic rangeing)
- 光测距: light-ranging
- 仪: appearance; bearing
- 测光测距仪: laser range finder; laserrangefinder
- 激光测距仪: laser distance detecotr; laser distance measuring instrument; laser distance meter; laser distance neasuring instrument; laser ranger; laser ranging device; laser ranging unit; laserdistancedetecotr; laserdistancemeasuringi trument; laserranger; lrf laser range finder
- 双激光测距仪: two-colour laser distancemeter
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