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AssigneeCoretronic Corporation
InventorsYi-Jun LIAO, Kun-Hong CHEN, Yu-Hsuan HSIEH, Yun-Shih CHEN
Estimating the term…
A projection device and a projection correction method are provided. The projection device includes a projection module, a zoom projection lens, a sensor, a focus adjustment module, a zoom-ratio adjustment module, a detection module and a control unit. The zoom-ratio adjustment module adjusts a position of a lens group in the zoom projection lens to adjust a zoom ratio of a projection image generated by the zoom projection lens projecting an image beam generated by the projection module. The control unit uses an autofocus transfer function to calculate a focus adjustment parameter based on a corresponding detection value generated by the detection module detecting displacement of the lens group and a projection distance sensed by the sensor, and controls the focus adjustment module according to the focus adjustment parameter to adjust an imaging focal length of the zoom projection lens.
A projection device comprising:
A projection correction method suitable for a projection device, the projection device comprising a projection module, a zoom projection lens, a sensor, a focus adjustment module, a zoom-ratio adjustment module and a detection module, the zoom-ratio adjustment module and the detection module being connected to the zoom projection lens, and the projection correction method comprising the following steps:
Dependencies are inferred from the claim text.