Driving apparatus for fine-tuning focus

Details Driving apparatus for fine-tuning focus Driving apparatus for fine-tuning focus

2008-04-19

2008-11-25

Barrera, Ramon M (Department: 2832)

Optical: systems and elements

Lens

With support

C335S222000

Reexamination Certificate

active

07457062

ABSTRACT:
A driving apparatus for fine-tuning focus is provided, including a movable structure suspended inside an outer holder by a suspension set. The suspension set is connected to the movable structure and the outer holder respectively so that the movable structure is suspended inside the outer holder, and can move inside the outer holder. With a magnet force generated by the interaction of the magnetic field of said first magnet set and said second magnet set of said outer holder, and the electrical current in said first coils and said second coils of said movable structure, the magnet force is able to drive the movable structure upward and downward to adjust the focus.

REFERENCES:
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patent: 5241528 (1993-08-01), Mohri et al.
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patent: 7199949 (2007-04-01), Haruguchi et al.
patent: 2001/0026528 (2001-10-01), Suzuki et al.
patent: 2007/0035860 (2007-02-01), Adachi et al.

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