Patent ID: 11906894
Assignee: OLYMPUS CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A non-transitory computer-readable medium storing a processor executable code, which when executed by at least one processor, this processor belong provided in an imaging device that comprises a photographing lens that is capable of zoom and focus, a first stepping motor that drives a zoom lens contained in the photographing lens, and a second stepping motor that drives a focus lens contained in the photographing lens, performs a lens control method, the lens control method comprising:
being able to set drive times in accordance with specified control unit time for each of respective drive pulse of the first stepping motor and the second stepping motor, and, when controlling the first stepping motor and the second stepping motor,
within a given section in which the zoom lens and the focus len: are driven, having a period in which at least one of the first stepping motor and the second stepping motor is driven at a constant rate, and,
in order to make a time, required to drive at least one or the first stepping motor and the second stepping motor by a specified number of drive pulses during the period in which there is drive at the constant rate, match a specified time,
when a drive time per one drive pulse, that has been derived by dividing drive time for all drive pulses of a period in which there is drive at the constant rate by the specified number of drive, is made average drive time,
dividing the period in which there is drive at the constant rate into a plurality of periods, calculating two of the drive times that are different from each other by the control unit time, on either side of the average drive time, and setting one of the two drive times, that are different from each other by the control unit time, as a drive time for every-drive pulse of the plurality of periods.