PURPOSE: To measue actual length of an object to be photograhed by deriving a distance to the object to be photographed by irradiating a beam light to the object to be photographed and detecting its irradiated position, and displaying a scale pattern of an insterval corresponding to this distance onto a picture.
CONSTITUTION: In case when an optical image obtained by an endoscope is converted to a video by a television camera 16, and its image is displayed on a CRT monitor 48, actual length can be read on the monitor 48 by displaying jointly a scale pattern, and leser light is radiated along a light guide 12 as shown by a broken line from the tip of the light guide 12, and an the other hand, a large picture is made incident to the tip of an image guide 10 as a distance increases as shown by a one point chain line. In this way, a distance from an objective part of the endoscope to an object to be photographed is derived, magnification of a picture on the picture display to the actual object is derived, and a scale pattern of an interval corresponding to this magnification is sent togethr with an endoscope image to the monitor 48 from a pattern generator 46.
KINOSHITA KUNIO
KANEHIRA KATSUYUKI
IKUNO YUUJI
FURUHATA HIROYUKI
TANIGAWA KOUJI
NAKAMURA TAKEAKI
OGAWA MOTOTSUGU
KAWASAKI TAKETO
| JPS4944752A | 1974-04-27 | |||
| JPS5790103U | 1982-06-03 | |||
| JPS5145911A | 1976-04-19 |