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Micro linear motor driving device and focusing lens device with the same driving device

A linear motor and driving device technology, which can be used in electromechanical devices, projection devices, printing devices, etc., can solve problems such as poor power consumption characteristics

Inactive Publication Date: 2007-03-21
POWERGATE OPTICAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poor power consumption characteristics and the need to use closed-loop control are the shortcomings of this type of actuator that need to be improved.

Method used

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  • Micro linear motor driving device and focusing lens device with the same driving device
  • Micro linear motor driving device and focusing lens device with the same driving device
  • Micro linear motor driving device and focusing lens device with the same driving device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The main principle of the miniature linear motor driving device of the present invention is to use the principle of electromagnetic induction, and the magnetic force between the magnetic guide rail and the driving coil causes the driving coil to move. When the current is applied to the drive coil, if the induced electromagnetic force is attracted by the magnetic force of the magnetic guide rail, it will move along the guide rail in one direction; otherwise, after applying the reverse current to the drive coil, The electromagnetic force induced by it will mutually repel the magnetic force of the magnetic guide rail, and at this time, the drive coil will move along the guide rail in another direction. According to this phenomenon, since the induction coil is assembled on the bearing base, the bearing base will be driven by the induction coil to achieve the purpose of moving the lens group mounted on the bearing base.

[0027] As shown in Figures 3 to 7, the focusing lens ...

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Abstract

This invention relates to a micro-linear drive device of a motor used in driving a lens set for focusing, in which, the drive device includes: a loading seat, at least a driving coil and at least one magnetic leading rail, in which, said loading seat is set with at least one leading hole for containing said lens set, said driving coil is winded around the hole, said magnetic leading rail passes through the hole forming a first magnetic pole and a second magnetic pole at both ends of the rail and the loading seat can shift in linearity along the rail.

Description

technical field [0001] The present invention relates to a miniature linear motor driving device and a focusing lens device with the driving device, in particular to a focusing lens group which is suitable for a linear motor as a power source, and which is driven by a driving coil and a magnetic A driving device that provides power through the electromagnetic interaction between the guide rails. Background technique [0002] Please refer to FIG. 1 , in a general photographing device 1 , it is mainly composed of a lens group 11 , a light sensing component 12 and a focusing mechanism (not shown in the figure). The lens group 11 can image the reflected image light of the subject on the light sensing component 12 . Because if the distance between the lens group 11 and the photo-sensing component 12 is fixed (ie fixed-focus lens), it can only clearly present objects with a hyperfocal distance (hyperfocal distance) beyond 2-3 meters. If the close-up function is desired, the dista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/02H02K41/035G02B7/04G02B7/10G03B3/10
Inventor 何文仁张吉龙
Owner POWERGATE OPTICAL INC