CONTROL DEVICE, IMAGING DEVICE, MOVABLE BODY, CONTROL METHOD, AND PROGRAM

• Main Authors: NAGAYAMA YOSHINORI, HAKU RYUKICHI
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

To solve the problem in which there is possibility that a control error generated in a transmission mechanism which transmits power from an electric motor to a lens changes due to a change in an ambient temperature or an aged deterioration.SOLUTION: A control device may be configured to control an imaging device including: a lens: an electric motor; and a transmission mechanism which transmits power from the electric motor to the lens. The control device includes: a frist acquisition unit for acquiring a control error generated when transmitting the power from the electric motor via the transmission mechanism to the lens from a storage unit; a control unit for controlling the electric motor to move the lens to a target position on the basis of the target position of the lens and the control error; a second acquisition unit for acquiring a first position of the lens which has moved according as the control part controls the electric motor on the basis of the target position and the control error; and an update unit for updating the control error stored in the storage unit on the basis of the target position and the first position.SELECTED DRAWING: Figure 7 【課題】電動機からの動力をレンズに伝達する伝達機構で生じる制御誤差は、周囲の温度の変化または経年劣化などにより変化する可能性がある。【解決手段】制御装置は、レンズと、電動機と、電動機からの動力をレンズに伝達する伝達機構とを備える撮像装置を制御する制御装置でよい。制御装置は、電動機からの動力を伝達機構を介してレンズに伝達するときに生じる制御誤差を記憶部から取得する第１取得部と、レンズの目標位置及び制御誤差に基づいて、レンズを目標位置まで移動させるべく、電動機を制御する制御部と、制御部が目標位置及び制御誤差に基づいて電動機を制御することで移動した後のレンズの第１位置を取得する第２取得部と、目標位置及び第１位置に基づいて、記憶部に記憶されている制御誤差を更新する更新部とを備えてよい。【選択図】図７