| 摘要 |
A focus-adjusting apparatus and platform of an imaging device includes a base, a holding device, a gear set, an imaging device and a stepping motor. The imaging device is disposed on the base during the focus-adjusting process and can be removed from the base after the focus-adjusting process. The stepping motor adjusts the focus of the imaging device and an image-processing unit calculates and records the modulation transfer function of the imaging device. The focus of the imaging device is set to a value with which the imaging device has the optimum modulation transfer function.
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