CN105022139A - Optical lens group - Google Patents
Optical lens group Download PDFInfo
- Publication number
- CN105022139A CN105022139A CN201410177532.2A CN201410177532A CN105022139A CN 105022139 A CN105022139 A CN 105022139A CN 201410177532 A CN201410177532 A CN 201410177532A CN 105022139 A CN105022139 A CN 105022139A
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- CN
- China
- Prior art keywords
- minute surface
- eyeglass
- lens barrel
- reference field
- lens
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Abstract
The invention provides an optical lens group. The optical lens group comprises a lens cone, a first lens, a second lens and a third lens, wherein the first lens, the second lens and the third lens are arranged in the lens cone; the first lens is arranged in the lens cone, and the outer periphery of the first lens is abutted against the inner cone wall of the lens cone; the second lens is abutted against the first lens, and a gap is reserved between the second lens and the inner cone wall of the lens cone; and the third lens is abutted against the second lens, and a gap is reserved between the third lens and the inner cone wall of the lens cone. The relative position of the lenses is fixed through enabling corresponding structures of the lenses to be abutted against each other, thereby further greatly reducing influences imposed on the optical performance by the tolerance of the lens cone.
Description
Technical field
The present invention is relevant with optical devices; Refer to a kind of optical frames head group especially.
Background technology
Along with the progress of optics science and technology, the optical devices increasing prevalence such as camera, video camera, projector, and the ring optical property quality of above-mentioned optical devices being produced to maximum effect are then the designs of the optical frames head group that it uses.
In general, the main composition of optical frames head group usually includes outside lens barrel and is arranged at inner optical mirror slip, and wherein can cause direct impact to the optical property of optical frames head group, except the quality of optical mirror slip optical design, another is exactly the error of relative position between optical mirror slip, when error more hour, then represent preset state during more close design, and cause optical frames head group can more close to perfect condition.
But, the tolerance that general industry tolerable obtains lens barrel internal diameter about falls within 0.005 millimeter, but along with optical frames head group is more tending towards the design of miniaturization, the error of 0.005 millimeter has badly influenced the relative position between eyeglass, and then affect the quality of optical imaging of optical frames head group, and after making optical frames head group Miniaturization Design, its optical property cannot meet the demand of user on the contrary.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of optical frames head group, when optical lens can be made to assemble, the tolerance of lens barrel internal diameter can not affect the relative position between eyeglass, and then significantly reduces the impact of lens barrel tolerance for optical property.
In order to reach above-mentioned purpose, optical frames head group provided by the present invention comprises a lens barrel, one first eyeglass, one second eyeglass and one the 3rd eyeglass.Wherein, this lens barrel has the thing side opening and a hole, image side that are positioned at opposite location.This first eyeglass is located in this lens barrel, and the outer peripheral edges of this first mirror and the inner tube wall of this lens barrel abut, to fix the diametrically position between this first eyeglass and this lens barrel; In addition, this first eyeglass has one first minute surface towards this thing side opening and one second minute surface towards this hole, image side, and the surface of this side, the second minute surface place has one first locating surface and one first reference field is arranged around this second minute surface.This second eyeglass is arranged in this lens barrel, and has one the 3rd minute surface towards this thing side opening and one the 4th minute surface towards this hole, image side, and the surface of the 3rd side, minute surface place has one second locating surface and one second reference field is arranged around the 3rd minute surface; This second locating surface and this first locating surface abut, and to fix the diametrically position between the 3rd minute surface and this second minute surface, and make to be formed with a gap between this second eyeglass and inner tube wall of this lens barrel; This second reference field and this first reference field abut, to fix the relative axial position between the 3rd minute surface and this second minute surface; In addition, the surface of the 4th side, minute surface place has one the 3rd locating surface and one the 3rd reference field is arranged around the 4th minute surface.3rd eyeglass is arranged in this lens barrel, and has one the 5th minute surface towards this thing side opening and one the 6th minute surface towards this hole, image side, and the surface of the 5th side, minute surface place has one the 4th locating surface and one the 4th reference field is arranged around the 5th minute surface; 4th locating surface and the 3rd locating surface abut, and to fix the diametrically position between the 5th minute surface and the 4th minute surface, and make the 3rd to be formed with a gap between eyeglass and the inner tube wall of this lens barrel; 4th reference field and the 3rd reference field abut, to fix the relative axial position between the 5th minute surface and the 4th minute surface.
Whereby, above-mentioned design is by structure corresponding on eyeglass mutually being abutted, and reach the object of relative position between fixing len, when optical lens can be made to assemble, the tolerance of lens barrel internal diameter can not affect the relative position between eyeglass, and then significantly reduces the impact of lens barrel tolerance for optical property.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the optical frames head group of the preferred embodiment of the present invention.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is that Fig. 1 is in the cut-open view in A-A direction.
[symbol description]
100-optical frames head group;
10-lens barrel;
12-thing side opening; Hole, 14-image side;
20-first eyeglass;
21-first minute surface; 22-second minute surface;
23-first locating surface; 24-first reference field;
30-second eyeglass;
31-the 3rd minute surface; 32-the 4th minute surface;
33-second locating surface; 34-second reference field;
33-the 3rd reference field; 34-the 3rd locating surface;
40-the 3rd eyeglass;
41-the 5th minute surface; 42-the 6th minute surface;
43-the 4th reference field; 44-the 4th locating surface;
D1, D2-gap;
51,52-shade;
53-set collar;
60-the 4th eyeglass.
Embodiment
For can the present invention be illustrated more clearly in, now lift preferred embodiment and coordinate accompanying drawing to be described in detail as follows, shown in please refer to the drawing 1 to Fig. 3, the optical frames head group 100 of the preferred embodiment of the present invention comprises lens barrel 10,1 first eyeglass 20,1 second eyeglass 30, the 3rd eyeglass 40, two shade 51 ~ 52, set collar 53 and one the 4th eyeglass 60.Wherein:
This lens barrel 10 is in hollow, and its contrary two ends have a thing side opening 12 respectively and a hole, image side 14 is communicated with the inside of this lens barrel 10.
This first eyeglass 20 is located in this lens barrel 10, and this first eyeglass 20 has one first minute surface 21 towards this thing side opening 12 and one second minute surface 22 towards this hole, image side 14, and the surface of this side, the second minute surface 22 place has one first locating surface 23 and one first reference field 24 is arranged around this second minute surface 22, and this first locating surface 23 comparatively this first reference field 24 is close to this second minute surface 22, and this first locating surface 23 is an inclined-plane in the present embodiment.In addition, the outer peripheral edges of this first eyeglass 20 and the inner tube wall of this lens barrel 10 abut, to fix the diametrically position between this first eyeglass 20 and this lens barrel 10, and this first eyeglass 20 is by sticking to the inner side in this lens barrel 10 by the surface of this side, the first minute surface 21 place, and reach the object of fixing this first eyeglass 20 position in this lens barrel 10.
These shades 51,52 are that the material with light tight characteristic is made and in circular, and these shades 51,52 distinctly have a hole in its center position.
This second eyeglass 30 is arranged in this lens barrel 10, and there is one the 3rd minute surface 31 towards this thing side opening 12 and one the 4th minute surface 32 towards this hole, image side 14, and the surface of the 3rd side, minute surface 31 place has one second locating surface 33 and one second reference field 34 is arranged around the 3rd minute surface 31, and this second locating surface 33 comparatively this second reference field 34 is close to the 3rd minute surface 32, and this second locating surface 33 is the inclined-plane of a pitch angle and this first locating surface 23 complementation in the present embodiment.In addition, the surface at the 4th side, minute surface 32 place has one the 3rd reference field 35 and one the 3rd locating surface 36 is arranged around the 4th minute surface 32, and the 3rd reference field 35 comparatively the 3rd locating surface 36 close to the 4th minute surface 32, and in the present embodiment, 3rd locating surface 36 is an inclined-plane equally, and the 3rd reference field 35 is parallel to each other with this second reference field 34.
Thus, during assembling, just first this shade 51 can be arranged at the surface of this side, the second minute surface 22 place of this first eyeglass 20, and by the hole of this shade 51 just to this second minute surface 22.Then, this second locating surface 33 is abutted with this first locating surface 23, this second eyeglass 30 is made to be subject to the restriction of the first eyeglass 20, and the diametrically position fixed between the 3rd minute surface 31 and this second minute surface 22, and be formed with a clearance D 1 between this second eyeglass 30 with this lens barrel 10 inner tube wall and do not contact with this lens barrel 10, this second reference field 34 then abuts with this first reference field 24, to fix the relative axial position between the 3rd minute surface and this second minute surface, and make this shade 51 between this first eyeglass 20 and this second eyeglass 30.
3rd eyeglass 40 is arranged in this lens barrel 10, and there is one the 5th minute surface 41 towards this thing side opening 12 and one the 6th minute surface 42 towards this hole, image side 14, and the surface of the 5th side, minute surface 51 place has one the 4th reference field 43 and one the 4th locating surface 44 is arranged around the 5th minute surface 41, and the 4th reference field 43 comparatively the 4th locating surface 44 is close to the 5th minute surface 42, and the 4th locating surface 44 is the inclined-plane of a pitch angle and the 3rd locating surface 36 complementation in the present embodiment.
Thus, during assembling, just first this shade 52 can be arranged at the surface of the 4th side, minute surface 32 place of this second eyeglass 30, and by the hole of this shade 52 just to the 4th minute surface 32.Then, 4th locating surface 44 is abutted with the 3rd locating surface 36, the 3rd eyeglass 40 is made to be subject to the restriction of the second eyeglass 30, and the diametrically position fixed between the 5th minute surface 41 and the 4th minute surface 32, and be formed with a clearance D 2 between the 3rd eyeglass 40 with this lens barrel 10 inner tube wall and do not contact with this lens barrel 10,4th reference field 43 then abuts with the 3rd reference field 34, to fix the relative axial position between the 5th minute surface 41 and the 4th minute surface 32, and make this shade 52 between this second eyeglass 30 and the 3rd eyeglass 20.
This set collar 53 makes with hard material and is circular, and this set collar 53 has a hole in center position.When this first eyeglass 20 to the 3rd eyeglass 30 is assembled to after in this lens barrel 10, just this set collar 53 can be filled in this lens barrel 10, and make this set collar 53 be pressed against on the surface of the 6th side, minute surface 42 place of the 3rd eyeglass 40, and the hole of this set collar 53 is just to this six minute surface 42, fix except the object of these eyeglasses 20,30,40 in this lens barrel 10 except reaching, the hole of this set collar 53 also can be passed through for light and can not affect the optical property of this optical frames head group 100.
4th 60, eyeglass is arranged in this lens barrel 10, and comparatively this set collar 53 close to this hole, image side 14, and abut with this set collar 53, and make this set collar 53 between the 3rd eyeglass 40 and the 4th eyeglass 60, and the purpose of design of the 4th eyeglass 60 is to improve aberration, to promote the optical property of this optical frames head group 100.
Thus, by above-mentioned, structure corresponding on these eyeglasses 20,30,40 is abutted mutually, just the object of firmly fixing relative position between these eyeglasses 20,30,40 can be reached, can make the tolerance of this lens barrel 10 can not between these eyeglasses 20,30,40 relative position impact, and make the error between these eyeglasses 20,30,40 between relative position lower than less than 0.002 millimeter, and then can promote the optical property of this optical frames head group 100 significantly.
Certainly; in real work; the placement of these locating surfaces and these reference fields is not limited with the position disclosed by above-described embodiment; and the foregoing is only the preferred possible embodiments of the present invention; as long as the equivalent variations that application instructions of the present invention and claim are done, ought to be included in scope of patent protection of the present invention.
Claims (10)
1. an optical frames head group, is characterized in that, comprises:
One lens barrel, has the thing side opening and a hole, image side that are positioned at opposite location;
One first eyeglass, is located in this lens barrel, and the outer peripheral edges of this first eyeglass and the inner tube wall of this lens barrel abut, to fix the diametrically position between this first eyeglass and this lens barrel; In addition, this first eyeglass has one first minute surface towards this thing side opening and one second minute surface towards this hole, image side, and the surface of this side, the second minute surface place has one first locating surface and one first reference field is arranged around this second minute surface;
One second eyeglass, is arranged in this lens barrel, and has one the 3rd minute surface towards this thing side opening and one the 4th minute surface towards this hole, image side, and the surface of the 3rd side, minute surface place has one second locating surface and one second reference field is arranged around the 3rd minute surface; This second locating surface and this first locating surface abut, and to fix the diametrically position between the 3rd minute surface and this second minute surface, and make to be formed with a gap between this second eyeglass and inner tube wall of this lens barrel; This second reference field and this first reference field abut, to fix the relative axial position between the 3rd minute surface and this second minute surface; In addition, the surface of the 4th side, minute surface place has one the 3rd locating surface and one the 3rd reference field is arranged around the 4th minute surface; And
One the 3rd eyeglass, is arranged in this lens barrel, and has one the 5th minute surface towards this thing side opening and one the 6th minute surface towards this hole, image side, and the surface of the 5th side, minute surface place has one the 4th locating surface and one the 4th reference field is arranged around the 5th minute surface; 4th locating surface and the 3rd locating surface abut, and to fix the diametrically position between the 5th minute surface and the 4th minute surface, and make the 3rd to be formed with a gap between eyeglass and the inner tube wall of this lens barrel; 4th reference field and the 3rd reference field abut, to fix the relative axial position between the 5th minute surface and the 4th minute surface.
2. optical frames head group according to claim 1, wherein this first locating surface comparatively this first reference field close to this second minute surface, and this second locating surface comparatively this second reference field close to the 3rd minute surface.
3. optical frames head group according to claim 1, wherein this first locating surface and this second locating surface are respectively an inclined-plane, and the pitch angle of this first locating surface and this second locating surface is complementary.
4. optical frames head group according to claim 1, wherein the 3rd reference field comparatively the 3rd locating surface close to the 5th minute surface, and the 4th reference field comparatively the 4th locating surface close to the 6th minute surface.
5. optical frames head group according to claim 1, wherein the 3rd locating surface and the 4th locating surface are respectively an inclined-plane, and the pitch angle of the 3rd locating surface and the 4th locating surface is complementary.
6. optical frames head group according to claim 1, wherein this second reference field and the 3rd reference field are in being parallel to each other.
7. optical frames head group according to claim 1, is characterized in that, also includes a shade, makes with the material with light tight characteristic, and to be arranged in this lens barrel and between this first eyeglass and this second eyeglass.
8. optical frames head group according to claim 1, is characterized in that, also includes a shade, makes with the material with light tight characteristic, and to be arranged in this lens barrel and between this second eyeglass and the 3rd eyeglass.
9. optical frames head group according to claim 1, is characterized in that, also includes a set collar, is arranged in this lens barrel, and comparatively the 3rd eyeglass, close to this hole, image side, and to abut with the surface of the 6th side, minute surface place.
10. optical frames head group according to claim 9, is characterized in that, also includes one the 4th eyeglass, is arranged in this lens barrel, and comparatively this set collar, close to this hole, image side, and to abut with this set collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177532.2A CN105022139A (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177532.2A CN105022139A (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105022139A true CN105022139A (en) | 2015-11-04 |
Family
ID=54412231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410177532.2A Pending CN105022139A (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105022139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017129006A1 (en) * | 2016-01-28 | 2017-08-03 | 宁波舜宇光电信息有限公司 | Optical lens head, camera module and assembling method therefor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030117722A1 (en) * | 2001-12-25 | 2003-06-26 | Genius Electronic Optical (Xiamen) Co., Ltd. | Structure of digital imaging lens |
| US20030142417A1 (en) * | 2002-01-18 | 2003-07-31 | Tien-Ching Chen | Lens |
| CN101672964A (en) * | 2008-09-11 | 2010-03-17 | 亚洲光学股份有限公司 | Lens set with embedding structure |
| CN201757808U (en) * | 2010-08-27 | 2011-03-09 | 中山联合光电科技有限公司 | High positioning accuracy ultrathin optical lens of all-plastic non-spherical lens structure |
| CN203825274U (en) * | 2014-04-29 | 2014-09-10 | 佳凌科技股份有限公司 | Optical lens group |
-
2014
- 2014-04-29 CN CN201410177532.2A patent/CN105022139A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030117722A1 (en) * | 2001-12-25 | 2003-06-26 | Genius Electronic Optical (Xiamen) Co., Ltd. | Structure of digital imaging lens |
| US20030142417A1 (en) * | 2002-01-18 | 2003-07-31 | Tien-Ching Chen | Lens |
| CN101672964A (en) * | 2008-09-11 | 2010-03-17 | 亚洲光学股份有限公司 | Lens set with embedding structure |
| CN201757808U (en) * | 2010-08-27 | 2011-03-09 | 中山联合光电科技有限公司 | High positioning accuracy ultrathin optical lens of all-plastic non-spherical lens structure |
| CN203825274U (en) * | 2014-04-29 | 2014-09-10 | 佳凌科技股份有限公司 | Optical lens group |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017129006A1 (en) * | 2016-01-28 | 2017-08-03 | 宁波舜宇光电信息有限公司 | Optical lens head, camera module and assembling method therefor |
| US11378722B2 (en) | 2016-01-28 | 2022-07-05 | Ningbo Sunny Opotech Co., Ltd. | Optical lens head, camera module and assembling method therefor |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |