Endoscope and method for determining object distances

Details Endoscope and method for determining object distances Endoscope and method for determining object distances

1995-10-31

1997-12-02

Apley, Richard J.

Surgery

Endoscope

With means for indicating position, depth or condition of...

600170, A61B 107

Patent

active

056930038

ABSTRACT:
A measuring method for determining the distance between the distal end of an endoscope and an object to be examined uses an optical radar and an endoscope, which comprises a distance measuring device. For carring out the measuring, a transmitting fiber optic and a receiving fiber optic in the endoscope are guided separately to respective separate optic modules at the front end of the endoscope. A semiconductor laser feeds a high frequency amplitude-modulated light in the transmitting fiber optic, which is projected by the transmitting optic module on the object in the form of a light spot. The light reflected from the object is received by the receiving optic module and guided through the receiving fiber optic in the endoscope to a light detector of a control unit. In the control unit a phase measurement is carried out and an evaluation device computes the distance information from the phase difference.

REFERENCES:
patent: 3608547 (1968-07-01), Sato
patent: 3744906 (1973-07-01), Sato et al.
patent: 4292961 (1981-10-01), Kawashima
patent: 4340302 (1982-07-01), Oku
patent: 4633855 (1987-01-01), Baba
patent: 5190028 (1993-03-01), Lafferty et al.
patent: 5210587 (1993-05-01), Ohmamyuda et al.
patent: 5430537 (1995-07-01), Liessner et al.

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