Abstract A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed over at each predetermined period interval. A plurality of light-receiving elements constituting each light-receiving unit are constructed so as to receive the reflected light from a plurality of distance measurement fields of view on an object to be photographed in a plurality of distance measurement zones obtained by dividing a range to be measured into several blocks. The input signal from each of the light-receiving elements in each of the distance measurement zones is changed over in synchronism with the light emission period of the light-emitting units and the output signals for the respective distance measurement zones are compared, whereby a distance data indicative of the distance measurement zone most approximate to the object distance is put out.
Inventors
👤 Takashi Kawabata
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-23 13:44
CPC Classifications
G; G01; G01C; G01C3/00; G01C3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A distance measuring apparatus comprising: (a) a plurality of light-emitting means emitting light at a predetermined period interval, said light-emitting means projecting the light onto a plurality of distance measurement fields of view of an object to be photographed whose distance is to be measured; (b) light-receiving means comprising a plurality of light-receiving elements for receiving the reflected light from said object, said light-receiving elements receiving the reflected light from a plurality of distance measurement fields of view on said object in distance measurement zones obtained by dividing a distance measurement range into several blocks; (c) a signal detecting circuit having change-over means for receiving as input the output signals of said light-receiving elements having received the reflected light from said distance measurement field of view in each of said distance measurement zones and for time-divisionally changing over the output signal from each of said light-receiving elements in each of said distance measurement zones; (d) signal output means for receiving as input the signal of said signal detecting circuit for each of said distance measurement zones and putting out a signal from the distance measurement zone most approximate to the object distance; and (e) means for putting out a distance data, said means receiving as input the signal of said output means and putting out the distance data.
Claim 2
Dependent Claim
218 words
A distance measuring apparatus comprising: (a) a plurality of light-emitting means emitting light at a predetermined period interval, said light-emitting means projecting the light onto a plurality of distance measurement fields of view of an object to be photographed whose distance is to be measured; (b) light-receiving means comprising a plurality of light-receiving elements for receiving the reflected light from said object, said light-receiving elements receiving the reflected light from a plurality of distance measurement fields of view on said object in distance measurement zones obtained by dividing a distance measurement range into several blocks; (c) a signal detecting circuit having change-over means for receiving as input the output signals of said light-receiving elements having received the reflected light from said distance measurement field of view in each of said distance measurement zones and for time-divisionally changing over the output signal from each of said light-receiving elements in each of said distance measurement zones; (d) signal output means for receiving as input the signal of said signal detecting circuit for each of said distance measurement zones and putting out a signal from the distance measurement zone most approximate to the object distance; and (e) means for putting out a distance data, said means receiving as input the signal of said output means and putting out the distance data.