TW200951532A - Image-forming lens set - Google Patents
Image-forming lens setInfo
- Publication number
- TW200951532A TW200951532A TW97122023A TW97122023A TW200951532A TW 200951532 A TW200951532 A TW 200951532A TW 97122023 A TW97122023 A TW 97122023A TW 97122023 A TW97122023 A TW 97122023A TW 200951532 A TW200951532 A TW 200951532A
- Authority
- TW
- Taiwan
- Prior art keywords
- lens
- object side
- facing toward
- surface facing
- image
- Prior art date
Links
Landscapes
- Lenses (AREA)
Abstract
An image-forming lens set is disclosed, which comprises a fixed diaphragm and an optical set. The optical set comprises a first lens, a second lens, a third lens and a fourth lens which are arranged from an object side to an image side according to the following order: the diaphragm; the first lens, having positive diopter with a convex surface facing toward the object side; the second lens, which is a meniscus lens having a negative diopter with a concave surface facing toward the object side; the third lens, having positive diopter with a convex surface facing toward the object side; and the fourth lens having negative diopter with a concave surface facing toward the object side. According to the design that the second and fourth lens have concave surfaces facing toward the object side, and the third lens has convex surface facing toward the object side, the system sensitivity can be reduced so as to effectively control tolerance range, thereby providing a high-resolution and high-yield image-forming lens set.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97122023A TW200951532A (en) | 2008-06-13 | 2008-06-13 | Image-forming lens set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97122023A TW200951532A (en) | 2008-06-13 | 2008-06-13 | Image-forming lens set |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200951532A true TW200951532A (en) | 2009-12-16 |
Family
ID=44871763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW97122023A TW200951532A (en) | 2008-06-13 | 2008-06-13 | Image-forming lens set |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200951532A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI456287B (en) * | 2012-02-15 | 2014-10-11 | Largan Precision Co Ltd | Optical lens system |
TWI563285B (en) * | 2015-05-28 | 2016-12-21 | Largan Precision Co Ltd | Photographing lens system, image capturing device, and electronic device |
-
2008
- 2008-06-13 TW TW97122023A patent/TW200951532A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI456287B (en) * | 2012-02-15 | 2014-10-11 | Largan Precision Co Ltd | Optical lens system |
TWI563285B (en) * | 2015-05-28 | 2016-12-21 | Largan Precision Co Ltd | Photographing lens system, image capturing device, and electronic device |
US9753247B2 (en) | 2015-05-28 | 2017-09-05 | Largan Precision Co., Ltd. | Photographing lens system, image capturing device, and electronic device |
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