DISTANCE MEASUREMENT DEVICE, DISTANCE MEASUREMENT METHOD, AND DISTANCE MEASUREMENT PROGRAM

摘要

A distance measurement device includes an imaging unit, an emission unit, a light receiving unit, a derivation unit which derives a distance to the subject based on a timing at which directional light is emitted and a timing at which reflected light is received, an execution unit which executes at least one of focus adjustment of an imaging optical system with respect to the subject or exposure adjustment prior to imaging by the imaging unit, and a control unit which performs control such that the timing at which at least one of focus adjustment or exposure adjustment is executed by the execution unit and the timing of a distance measurement by the emission unit, the light receiving unit, and the derivation unit are synchronized and performs control such that transition is performed to a state where actual exposure by the imaging unit is possible after the distance measurement is completed.

主权项

1. A distance measurement device comprising:
an imaging unit which captures a subject image formed by an imaging optical system forming the subject image indicating a subject; an emission unit which emits directional light as light having directivity along an optical axis direction of the imaging optical system, wherein the emission unit is able to adjust the emission intensity of the directional light and adjusts an emission intensity based on at least one of focusing state specification information or either one of subject brightness or exposure state specification information to emit the directional light; a light receiving unit which receives reflected light of the directional light from the subject; a derivation unit which derives a distance to the subject based on a timing at which the directional light is emitted by the emission unit and a timing at which the reflected light is received by the light receiving unit; an execution unit which executes at least one of focus adjustment of the imaging optical system with respect to the subject or exposure adjustment prior to imaging by the imaging unit; a reception unit which receives a two-stage pressing operation including a first pressing operation that is an imaging preparation instruction to make the execution unit start the execution of the at least one of the focus adjustment or the exposure adjustment and a second pressing operation that is an imaging instruction to make the execution unit start actual exposure by the imaging unit; and a control unit which performs control such that the at least one of the focus adjustment or the exposure adjustment is executed by the execution unit in a case in which the first pressing operation is received by the reception unit, performs control such that execution of a distance measurement by the emission unit, the light receiving unit, and the derivation unit is started in a case in which the at least one of the focus adjustment or the exposure adjustment is executed, performs control such that a presentation unit presents information relating to a result of the distance measurement in a state in which the first pressing operation is maintained after the distance measurement is completed, and then performs control such that the actual exposure is performed by the imaging unit in a case in which the second pressing operation is successively received by the reception unit after the first pressing operation without a pressing operation being released at the reception unit.