Laser range finder with CMOS image sensor in automotive field

Jih Huah Wu, Rong Sen Chang

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A low cost prototype of a laser range finder using a CMOS image sensor is developed for the automotive field. The system presented here is based on triangulation. The gravity of the infrared laser spot on CMOS image sensor is converted into pixel coordinates proportional to the distance to be measured. Based on the experimental tests of the system, it was found that the distance could be estimated with accuracy better than 5% within the range of 5 to 45 meters at twilight and night. Experimental results are provided and possible improvements are discussed.

Original languageEnglish
Article number46
Pages (from-to)368-377
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2004
EventNovel Optical Systems Design and Optimization VII - Denver, CO, United States
Duration: 2 Aug 20043 Aug 2004


  • CMOS image sensor
  • Laser range finder
  • Triangulation


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