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US 12,075,158 B2Granted
Control method and optical device for detecting a position of a lens and accordingly move the lens into an allowable range
AssigneeQisda Corporation
InventorsTe-Yuan Li, Chih-Wei Cho
Life of this patent
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Abstract
A control method for an optical device includes a detector detecting a current position of a lens, a processor calculating a distance between the current position and a target position, the processor determining whether the current position is within a predetermined range according to the distance, and the processor controlling a driving device to move the lens into an allowable range according to whether the current position is within the predetermined range. The predetermined range and the allowable range are corresponding to the target position.
Claims19
A control method for an optical device, comprising:
- a detector detecting a current position of a lens;
- a processor calculating a distance between the current position and a target position;
- the processor determining whether the current position is within a predetermined range according to the distance;
- and
- the processor controlling a driving device to move the lens into an allowable range according to whether the current position is within the predetermined range;
- wherein;
- the predetermined range and the allowable range are corresponding to the target position;
- the processor controlling the driving device to move the lens into the allowable range according to whether the current position is within the predetermined range, comprises:
- if the current position is within the predetermined range, the driving device moving the lens to a predetermined position outside the predetermined range;
- and
- the driving device moving the lens from the predetermined position into the allowable range;
- and
- the allowable range is smaller than the predetermined range and within the predetermined range.
10 more elements
An optical device, comprising:
- a lens;
- and
- a control system, comprising:
- a detector configured to detect a current position of the lens;
- a driving device coupled to the lens, and configured to move the lens;
- and
- a processor, coupled to the detector and the driving device, and configured to calculate a distance between the current position and a target position, and control the driving device accordingly;
- wherein:
- the processor determines whether the current position is within a predetermined range according to the distance, the processor controls the driving device to move the lens to a predetermined position outside the predetermined range, and moves the lens from the predetermined position into an allowable range if the current position is within the predetermined range, the predetermined range and the allowable range are corresponding to the target position, and the allowable range is smaller than the predetermined range and within the predetermined range.
6 more elements
An optical device, comprising:
- a lens;
- and
- a control system, comprising:
- a detector configured to detect a current position of the lens;
- a driving device coupled to the lens, and configured to move the lens;
- and
- a processor, coupled to the detector and the driving device, and configured to calculate a distance between the current position and a target position, and determine whether a last movement of the lens is along the first reference axis to control the driving device accordingly;
- wherein:
- if the last movement of the lens is not along the first reference axis, the driving device moves the lens along the first reference axis to move the lens into the allowable range;
- if the last movement of the lens is along the first reference axis, the driving device moves the lens along a second reference axis perpendicular to the first reference axis to move the lens into the allowable range;
- and
- the driving device alternately moves the lens along the first reference axis and along the second reference axis.
9 more elements
Dependencies are inferred from the claim text.