CN1115037A - Optical imaging lens system - Google Patents
Optical imaging lens system Download PDFInfo
- Publication number
- CN1115037A CN1115037A CN94120077A CN94120077A CN1115037A CN 1115037 A CN1115037 A CN 1115037A CN 94120077 A CN94120077 A CN 94120077A CN 94120077 A CN94120077 A CN 94120077A CN 1115037 A CN1115037 A CN 1115037A
- Authority
- CN
- China
- Prior art keywords
- lens
- optical imaging
- lenses
- lens system
- shading piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a photographic recording assembled device or a camera; in rays which passes through a plurality of lenses of a lens seat, the ray refracted by edge parts of the convex lenses with high standard aberration and refracted by the internal wall of the lens seat is sheltered by one or a plurality of shading components. Each shading component is provided with through holes arranged at the center and coaxial with optical axis; meanwhile, each transmission rate facing the direction of the edge is descended gradually, so the ray passing through central parts of the lenses can successfully pass through the lenses. In addition, the ray passing through the edge parts of the lenses with high standard aberration and the ray refracted by the internal wall of the lens seat are eliminated effectively facing the direction of the edge of the lenses, thus improving the quality of images. Additionally, the optical shading components can be easily arranged on the internal wall of the lens seat made of synthetic resin.
Description
The present invention relates to a kind of optical imaging lens system, especially relate to the optical profile type that a kind of aberration obtains proofreading and correct and resemble system.
Optical devices, for example photographic recording composite set, video camera etc., the optical lens system that is provided comprises makes light source, i.e. many lens of target image imaging on a charge-coupled device (CCD).
In this optical imaging lens system, when the light source from target passed through many lens, the aberration of close optical axis was little, so special injurious effects can not occur to the quality of image.Yet near the marginal portion of lens, aberration is quite big, consequently, a kind of phenomenon can occur, for example coma or ghost image.Thus, image quality is directly produced negative influence, so developed and various technology in order to proofread and correct aberration.
In these technology, United States Patent (USP) U.S.4,828,374 introduce a kind of technology, wherein the lens with certain refractive index are settled with negative, positive and positive order, come the calibrating optical aberration with this.In addition, also know and to adopt above-mentioned technology, that is, when iris is arranged on certain shading position, make light intensity adjusted, proofreaied and correct aberration by way of parenthesis.
With reference to Fig. 1 in detail, habitual optical imaging lens system will be described in detail hereinafter.
Described traditional optical lens system comprises a columniform lens mount 1, wherein by means of spacer ring 2 make lens L, L ... arrange with certain interval.Scioptics make from the light source scioptics of target focus on and imaging on a charge-coupled image sensor (not shown).
In this case, around the optical axis of lens L, aberration is very little, so do not give special influence to image quality.Yet, the marginal portion of whole lens L, aberration is very big, therefore the quality of image will directly be subjected to negative influence.Especially, scioptics L, L ... a part of light source be subjected to lens mount 1 wall reflection and by rims of the lens part be positioned at the refraction of imaging to charge-coupled image sensor diaphragm (not shown) before, image quality degenerates thus.For example, image quality degenerates with the form that a kind of dazzle and ghost image image occur.Even under the situation of inserting the supplementary lens that is used to proofread and correct aberration with certain refractive index, United States Patent (USP) U.S.4 for example, 828,374 adopted like that, by the light of lens mount wall reflection, cause degenerating of image quality can not obtain stoping by the light of the marginal portion refraction of lens etc.Exactly, owing to only increased the number of the lens that are used to proofread and correct aberration, will cause optical devices can not do more and more forr a short time and compacter like this.
In addition, other known technology is that the many narrow link slots of formation on the inwall of lens mount make not jamming pattern formation of reflection ray.
Adopt the technology of many narrow link slots just effective when lens mount is made by metal (for example aluminium alloy).Yet,, under the situation of lens mount by the synthetic resin making,, in the said lens seat, can not form narrow link slot based on the characteristic of injection molding now for light and handy and compact.
The present invention attempts to overcome the shortcoming of above-mentioned conventional techniques, so, the objective of the invention is to, a kind of optical imaging lens system is provided, wherein because the light of lens mount inwall reflection, and degenerate by the image quality that light caused of the marginal portion refraction of lens etc. and to drop to minimum.
The objective of the invention is to, a kind of optical imaging lens system is provided, wherein lens mount can be made with the synthetic resin injection molding, so that lens mount is light and compact.
In order to achieve the above object, optical imaging lens of the present invention comprise:
A lens mount;
Be placed in a plurality of lens in the lens mount at certain intervals, be used for the image of target is projected a charge-coupled image sensor;
At least one has the optics shade of certain transmissivity, and it is placed between any two adjacent lenses of a plurality of lens, is used to block unnecessary light.
According to the preferred embodiments of the present invention, the optics shade is placed between the lens perpendicular to optical axis, and it is engaged with the inwall of lens mount.Each optics shade has a through hole of determining size, and this through hole is coaxial with optical axis, and this optics shade comprises an optics light-blocking member, and the transmissivity of these parts becomes more and more lower towards the marginal portion.
According to other embodiments of the invention, a plurality of lens are settled with certain interval by means of the spacer ring between them, and each optics shade can be fixed on the inner periphery of spacer ring.
According to the present invention, farthest stop this phenomenon, promptly from the light of target after marginal portion refraction through lens, or form a image with high level aberration through the inwall reflection back of optical lens seat.Therefore, image quality improves.Also have an advantage to be, the optics shade can easily be placed in the lens mount inwall that synthetic resin makes.
Above-mentioned target of the present invention and other advantage can become more and more clearer by describing the preferred embodiments of the present invention and accompanying drawing in detail.
Fig. 1 represents the schematic side cross sectional view of habitual optical imaging lens system.
Fig. 2 represents the schematic side cross sectional view of optical imaging lens system of the present invention.
Fig. 3 represents along the front sectional view of A-A hatching line among Fig. 2.
Below, referring to accompanying drawing the present invention is gone out to describe in detail.
Fig. 2 is the schematic side cross sectional view of expression optical imaging lens system of the present invention.Fig. 3 is along the front sectional view of A-A hatching line among Fig. 2.
The lens mount of reference number 10 expression photographic recording composite sets (or video camera), in lens mount 10, settling a plurality of lens L, the L that have different refractivity separately ..., keep certain intervals between them.In order to keep the certain intervals between lens, insert spacer ring 20 in the periphery of inner wall of lens mount 10, spacer ring 20 is to be provided with from the inwardly protruded mode of the inwall of the lens mount between lens 10.In addition, optics shading piece 30 can be settled perpendicular to the optical axis between any two adjacent lens in the lens mount 10.For example, can settle optics shading piece 30 in this way, promptly it is placed in the circular groove of lens mount inwall formation, and be fixed in the circular groove.Optics shading piece 30 have one with the coaxial through hole 31 of optical axis.Light transmission from the core of optics shading piece 30 towards its edge direction is more and more lower.When the light of target during by optical lens, be subjected to the lens mount inwall, perhaps reflection of the marginal portion of lens or refraction, and form and do not see the dazzle of Chu or the light of ghost image, suitably remove by optics shading piece 30.In order to reach this purpose, can between lens, settle one or more optics shading pieces 30.Under the narrow situation in the interval between the lens, can form circular groove in the inboard of spacer ring 20 with certain depth, can be fixed on optics shading piece 30 in the circular groove of spacer ring 20.
Its operation of optical imaging lens system of the present invention as constituted above will be introduced below,
Light from target is focused on the charge-coupled image sensor by a plurality of lens L, and an image is formed.Under this condition, the light of scioptics central module, that is have the hole 31 of the light of low water-mark aberration by optics shading piece 30.So those light by the optics shading piece are not blocked.In addition, incide unwanted light that reflected by lens and that have the high level aberration on the marginal portion of lens with big angle, and the marginal portion of the equal directive optics of unwanted light shading piece 30 that is subjected to the inwall reflection of lens mount 10.Block the light on the marginal portion that is incident on optics shading piece 30 by optics shading piece 30.Make that the aberration of light at edge of directive lens is bigger, more and more reduce so the optical lens rate of optics shading piece 30 should be an inwall direction towards marginal portion and lens mount.Thus, can farthest stop the formation of dazzle and ghost image.
According to above-mentioned the present invention, among the light of the lens in the scioptics seat, had the light that the rims of the lens of high level aberration partly reflects, and, blocked by one or more optics shading pieces 30 by the light of the inwall reflection of lens mount.So, farthest stop to form dazzle and ghost image, on charge-coupled image sensor, form image clearly thus.There is a through hole at the center of formed optics shading piece, and descends step by step towards its its transmissivity of marginal portion direction.So the light center pit of scioptics and that have the low water-mark aberration can scioptics, and the light of scioptics marginal portion, they are subjected to the reflection of the inwall of lens mount etc., and are blocked effectively, and the result may obtain an image clearly.
In addition, optics shading piece of the present invention is easy to be placed on the inwall of the lens mount of being manufactured by synthetic resin, so the compactedness of product can reach easily.
Above-mentioned the present invention particularly describes with preferred embodiment, but need to understand, description above the present invention is not limited to the those of ordinary skill of this technical field concerning those, various change and change can increase under the situation that does not depart from the scope of the invention.
Claims (6)
1. optical imaging lens system comprises:
A lens mount;
Be placed in a plurality of lens in the lens mount at certain intervals, be used for the image of target is projected a charge-coupled image sensor;
At least one has the optics shading piece of certain transmissivity, and it is placed between any two adjacent lenses of a plurality of lens, is used to block unnecessary light.
2. optical imaging lens system as claimed in claim 1 is characterized in that the transmissivity of described optics shading piece descends step by step towards its marginal portion.
3. optical imaging lens system as claimed in claim 1 is characterized in that, described optics shading piece has a through hole coaxial with optical axis.
4. optical imaging lens system as claimed in claim 3 is characterized in that the transmissivity of described optics shading piece progressively descends towards its marginal portion.
5. optical imaging lens system as claimed in claim 1 is characterized in that described optics shading piece is fixed to the inwall of described lens mount, and is placed on the position perpendicular to lens axis between the described lens.
6. optical imaging lens system as claimed in claim 1 is characterized in that, described a plurality of lens are placed with certain interval by means of its interval turns, and described each optics shading piece is fixed on the internal perisporium of described spacer ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930024551A KR950016237A (en) | 1993-11-17 | 1993-11-17 | Optical system |
| KR24551/93 | 1993-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1115037A true CN1115037A (en) | 1996-01-17 |
Family
ID=19368356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94120077A Pending CN1115037A (en) | 1993-11-17 | 1994-11-17 | Optical imaging lens system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07199020A (en) |
| KR (1) | KR950016237A (en) |
| CN (1) | CN1115037A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347584C (en) * | 2003-02-26 | 2007-11-07 | 电科学工业公司 | Coaxial narrow angle dark field lighting |
| CN100460920C (en) * | 1996-06-18 | 2009-02-11 | 索尼株式会社 | Optical image recording system, and associated processing system |
| CN101859010A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN102103244A (en) * | 2009-12-22 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN101568963B (en) * | 2007-07-20 | 2012-04-04 | 三洋电机株式会社 | Synthetic resin lens manufacturing method, reformed quality synthetic resin material manufacturing method and optical pickup device |
| CN108572424A (en) * | 2017-03-08 | 2018-09-25 | 康达智株式会社 | Lens member and pick-up lens unit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4137726B2 (en) * | 2003-07-04 | 2008-08-20 | オリンパス株式会社 | Imaging device |
| CN112166358B (en) * | 2018-05-30 | 2022-07-26 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and assembling method thereof |
-
1993
- 1993-11-17 KR KR1019930024551A patent/KR950016237A/en not_active Application Discontinuation
-
1994
- 1994-11-15 JP JP6280850A patent/JPH07199020A/en active Pending
- 1994-11-17 CN CN94120077A patent/CN1115037A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460920C (en) * | 1996-06-18 | 2009-02-11 | 索尼株式会社 | Optical image recording system, and associated processing system |
| CN100347584C (en) * | 2003-02-26 | 2007-11-07 | 电科学工业公司 | Coaxial narrow angle dark field lighting |
| CN101568963B (en) * | 2007-07-20 | 2012-04-04 | 三洋电机株式会社 | Synthetic resin lens manufacturing method, reformed quality synthetic resin material manufacturing method and optical pickup device |
| CN101859010A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN102103244A (en) * | 2009-12-22 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN108572424A (en) * | 2017-03-08 | 2018-09-25 | 康达智株式会社 | Lens member and pick-up lens unit |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950016237A (en) | 1995-06-17 |
| JPH07199020A (en) | 1995-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |