Three-dimensional laser microvision

Hiroshi Shimotahira, Keigo Iizuka, Sun Chun Chu, Christopher Wah, Fumie Costen, Yuzo Yoshikuni

    Research output: Contribution to journalArticlepeer-review


    A three-dimensional (3-D) optical imaging system offering high resolution in all three dimensions, requiring minimum manipulation and capable of real-time operation, is presented. The system derives its capabilities from use of the superstructure grating laser source in the implementation of a laser step frequency radar for depth information acquisition. A synthetic aperture radar technique was also used to further enhance its lateral resolution as well as extend the depth of focus. High-speed operation was made possible by a dual computer system consisting of a host and a remote microcomputer supported by a dual-channel Small Computer System Interface parallel data transfer system. The system is capable of operating near real time. The 3-D display of a tunneling diode, a microwave integrated circuit, and a see-through image taken by the system operating near real time are included. The depth resolution is 40 μm lateral resolution with a synthetic aperture approach is a fraction of a micrometer and that without it is approximately 10 μm. © 2001 Optical Society of America.
    Original languageEnglish
    Pages (from-to)1784-1794
    Number of pages10
    JournalApplied Optics
    Issue number11
    Publication statusPublished - 10 Apr 2001


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