초록 ▼

A distance measuring device having a light projecting element and a light receiving or sensitive element normally brings a photo-taking lens into an in-focus position in accordance with a signal produced from the light receiving element. When the quantity of light received by the light receiving ele

A distance measuring device having a light projecting element and a light receiving or sensitive element normally brings a photo-taking lens into an in-focus position in accordance with a signal produced from the light receiving element. When the quantity of light received by the light receiving element exceeds a predetermined level due to high brightness of an object to be photographed, this condition is detected and the lens is either brought into a predetermined position or an in-focus position on the long distance side to avoid a focal deviation for the high brightness object.

대표청구항 ▼

A distance measuring device to project a distance measuring signal onto an object and receive a signal reflected therefrom thereby measuring a distance to said object, comprising: (A) signal receiving means for receiving said distance measuring signal reflected from the object; (B) distance indicati

A distance measuring device to project a distance measuring signal onto an object and receive a signal reflected therefrom thereby measuring a distance to said object, comprising: (A) signal receiving means for receiving said distance measuring signal reflected from the object; (B) distance indicating means for indicating a distance to the object depending on an output of the signal receiving means; (C) detection means for detecting when the signal receiving means is placed in a saturated state by external noise elements received together with the distance measuring signal, said detection means being arranged for regulating the operation of the distance indicating means when the saturated state is detected.