Position sensing device and lens driving module using the same

Details Position sensing device and lens driving module using the same Position sensing device and lens driving module using the same

2008-07-18

2010-02-16

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With support

C359S821000, C359S822000

Reexamination Certificate

active

07663820

ABSTRACT:
Provided is a position sensing device including a sensing unit that is mounted on one side of a lens barrel, which is inserted into a lens housing portion of a base so as to be vertically driven, and includes a light receiving section and a light emitting section which are provided to face each other; a driven grid that has a plurality of slits formed therein and is mounted on the lens barrel; and a fixed grid that has a plurality of slits formed therein and is fixed and coupled to the inside of the sensing unit.

REFERENCES:
patent: 5229836 (1993-07-01), Nagano
patent: 7450321 (2008-11-01), Shih et al.

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