Title:
DISTANCE MEASURING APPARATUS
Document Type and Number:
Japanese Patent JPS5582903
Kind Code:
A
Abstract:
To measure the distance to a selected object, the range finder transmits infrared light in a beam having a straight limiting edge on one side. The object reflects light back from the illuminated region and a lens receives part of the light and creates an image of the illuminated region including the straight limiting edge on a plane inclined at an angle to the optical axis of the lens. A detector, including a photoelectric transducer part of which is masked by a mask having a straight edge, is moved along the plane until the edge of the mask and the edge of the image are aligned as closely as possible. The position of the detector when this alignment takes place is indicative of the distance of the object from the range finder.
Inventors:
JIYOBANNI ODONE
BUIRII BUUTSUKUSU
FURIIDERU HAITSUMAN
BUIRII BUUTSUKUSU
FURIIDERU HAITSUMAN
Application Number:
JP16173879A
Publication Date:
June 23, 1980
Filing Date:
December 14, 1979
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
G01C3/06; G01B11/00; G01C3/00; G01C3/10; G01S17/46; G03B13/20; (IPC1-7): G01B11/00; G03B13/20