Development Of Pulse Holo-Camera For Observation Of Vibration Of Human Eardrum
Tsuneyoshi Uyemura, Naoki Yokoyama, Yoshiyuki Ohba, Yoshitaka Yamamoto, Yoshio Ogura, Tsuneo Takeda, Toshiaki Ogawara, Shin-ichiro Kawakami · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1983
For the purpose of observing the vibration of the human tympanic membrane clinically, a holocamera was test designed and manufactured. At the stage of test design, an experiment revealed the deterioration of laser light in its coherency when it came out through the optical fiber. As the method of improving the deteriorated coherency, two laser beams both of which were passed through the optical fiber bundle, were used for the illumination beam as well as the reference beall under a certain condition. This procedure made possible to manufacture a pulsed holo-camera well suitable for the clinical use