TW200725138A - Image pick-up system and focusing device - Google Patents
Image pick-up system and focusing deviceInfo
- Publication number
- TW200725138A TW200725138A TW094144701A TW94144701A TW200725138A TW 200725138 A TW200725138 A TW 200725138A TW 094144701 A TW094144701 A TW 094144701A TW 94144701 A TW94144701 A TW 94144701A TW 200725138 A TW200725138 A TW 200725138A
- Authority
- TW
- Taiwan
- Prior art keywords
- coil assembly
- magnet
- magnets
- carrying holder
- objective lens
- Prior art date
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
- Lens Barrels (AREA)
Abstract
A focusing device includes a carrying holder, a coil assembly and a magnet unit. The carrying holder is provided to mount an objective lens and defines an optical axis passing through the objective lens. The coil assembly and the carrying holder are connected and the coil assembly surrounds and defines an accommodation space. The magnet unit is located in the accommodation space and composed of two magnets and a magnet permeable sheet. The magnet permeable sheet is sandwiched between two magnets with the same polarity facing each other. The magnet permeable sheet changes the directions of the line of magnetic force which are generated by magnets, and the changed directions are substantially perpendicular to the direction of the wire winding of the coil assembly. The current passing through the coil assembly is changed such that the coil assembly and the carrying holder are moved in the extending direction of the optical axis of the objective lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94144701A TWI281591B (en) | 2005-12-16 | 2005-12-16 | Image pick-up system and focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94144701A TWI281591B (en) | 2005-12-16 | 2005-12-16 | Image pick-up system and focusing device |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI281591B TWI281591B (en) | 2007-05-21 |
TW200725138A true TW200725138A (en) | 2007-07-01 |
Family
ID=38751599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94144701A TWI281591B (en) | 2005-12-16 | 2005-12-16 | Image pick-up system and focusing device |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI281591B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI510078B (en) * | 2012-04-30 | 2015-11-21 | Wah Hong Ind Corp | Camera system |
-
2005
- 2005-12-16 TW TW94144701A patent/TWI281591B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI510078B (en) * | 2012-04-30 | 2015-11-21 | Wah Hong Ind Corp | Camera system |
Also Published As
Publication number | Publication date |
---|---|
TWI281591B (en) | 2007-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |