Two-step focus lens
AssigneeLite-On Technology Corporation
InventorsYi-Ming Lee, Wei-Kuo Shih
Life of this patent
Estimating the term…
Abstract
A two-step focus lens for a digital camera so that the digital camera can switch between a close focal point and a distant focal point. The two-step focus lens includes a coil base, a sensor, and a lens base. The coil base has a coil which is wounded in a specific direction. The sensor drives the coil base to switch its two polarities according to the winding direction of the coil on the coil base. The lens base is movably installed inside the coil base and corresponds to the sensor. The end farther from the sensor has a magnetic component so that the lens base moves relative to the coil base to the close and distant focal points as the coil base switches its polarities.
Claims3
A two-step focus lens used in a digital camera for the digital camera to switch between a close focal point and a distant focal point, comprising:
- a coil base having a coil which is wounded in a specific direction;
- a sensor driving the coil base to switch the magnetic polarities of its two ends according to the winding direction of the coil on the coil base;
- and
- a lens base which is movably installed inside the coil base and which is corresponding to the sensor, and the lens base has the distant end from the sensor is provided with a magnetic component so that the lens base moves relative to the coil base between a close focal point and a distant focal point as the coil base switches the magnetic polarities of its two ends.
Dependencies are inferred from the claim text.