CN203825274U - Optical lens group - Google Patents
Optical lens group Download PDFInfo
- Publication number
- CN203825274U CN203825274U CN201420215389.7U CN201420215389U CN203825274U CN 203825274 U CN203825274 U CN 203825274U CN 201420215389 U CN201420215389 U CN 201420215389U CN 203825274 U CN203825274 U CN 203825274U
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- CN
- China
- Prior art keywords
- minute surface
- eyeglass
- reference field
- lens barrel
- locating
- 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.)
- Expired - Fee Related
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Abstract
The utility model 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 utility model is relevant with optical devices; Refer to especially a kind of optical lens group.
Background technology
Along with the progress of optics science and technology, the optical devices such as camera, video camera, projector are day by day prevailing, and the optical property quality of above-mentioned optical devices produced to a ring of maximum effect, are the designs of its optical lens group using.
In general, the chief component of optical lens group conventionally includes outside lens barrel and is arranged at inner optical mirror slip, and wherein can cause direct impact to the optical property of optical lens 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, the preset state while representing more approaching design, and cause optical lens group can more approach perfect condition.
But, the tolerance that general industry tolerable obtains lens barrel internal diameter approximately falls within 0.005 millimeter, but along with optical lens 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 lens group, and make after optical lens group Miniaturization Design, its optical property cannot meet user's demand on the contrary.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of optical lens group, and can make optical lens assembling time, 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, the utility model provides optical lens group to comprise a lens barrel, one first eyeglass, one second eyeglass and one the 3rd eyeglass.Wherein, this lens barrel has the thing side opening and the picture side opening 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 connect to, to fix the radially relative position between this first eyeglass and this lens barrel; In addition, this first eyeglass have a first mirror facing to this thing side opening and one second minute surface towards this as side opening, and on the surface of this second minute surface place side, there is one first locating surface and one first reference field around this second minute surface setting.This second eyeglass is arranged in this lens barrel, and have one the 3rd minute surface towards this thing side opening and one the 4th minute surface towards this as side opening, and on the surface of the 3rd minute surface place side, there is one second locating surface and one second reference field around the 3rd minute surface setting; This second locating surface and this first locating surface connect to, to fix the radially relative position between the 3rd minute surface and this second minute surface, and make to be formed with a gap between this second eyeglass and the inner tube wall of this lens barrel; This second reference field and this first reference field connect to, to fix the relative axial position between the 3rd minute surface and this second minute surface; In addition, on the surface of the 4th minute surface place side, there is one the 3rd locating surface and one the 3rd reference field around the 4th minute surface setting.The 3rd eyeglass is arranged in this lens barrel, and have one the 5th minute surface towards this thing side opening and one the 6th minute surface towards this as side opening, and on the surface of the 5th minute surface place side, there is one the 4th locating surface and one the 4th reference field around the 5th minute surface setting; The 4th locating surface and the 3rd locating surface connect to, to fix the radially relative position between the 5th minute surface and the 4th minute surface, and make to be formed with a gap between the 3rd eyeglass and the inner tube wall of this lens barrel; The 4th reference field and the 3rd reference field connect to, to fix the relative axial position between the 5th minute surface and the 4th minute surface.
Wherein, this first locating surface this first reference field approaches this second minute surface, and this second locating surface this second reference field approach the 3rd minute surface.
Wherein, this first locating surface and this second locating surface are respectively an inclined-plane, and the pitch angle complementation of this first locating surface and this second locating surface.
Wherein, the 3rd reference field the 3rd locating surface approaches the 5th minute surface, and the 4th reference field the 4th locating surface approach the 6th minute surface.
Wherein, the 3rd locating surface and the 4th locating surface are respectively an inclined-plane, and the pitch angle complementation of the 3rd locating surface and the 4th locating surface.
Wherein, this second reference field and the 3rd reference field are and are parallel to each other.
Wherein, this optical lens group also includes a shade, makes, and be arranged in this lens barrel and between this first eyeglass and this second eyeglass with the material with light tight characteristic.
Wherein, this optical lens group also includes a shade, makes, and be arranged in this lens barrel and between this second eyeglass and the 3rd eyeglass with the material with light tight characteristic.
Wherein, this optical lens group also includes a set collar, be arranged in this lens barrel, and the 3rd eyeglass approaches this as side opening, and with the surface of the 6th minute surface place side connect to.
Wherein, this optical lens group also includes one the 4th eyeglass, be arranged in this lens barrel, and this set collar approaches this as side opening, and supports with this fixing articulating.
Whereby, above-mentioned design is by structure phase mutual connection corresponding on eyeglass is supported, and reach the object of relative position between fixing len, can make optical lens assembling time, 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.
Brief description of the drawings
Fig. 1 is the stereographic map of the optical lens group of the utility model preferred embodiment.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is that Fig. 1 is in the cut-open view of A-A direction.
[symbol description]
100-optical lens group;
10-lens barrel;
12-thing side opening; 14-is as side opening;
20-the first eyeglass;
21-the first minute surface; 22-the second minute surface;
23-the first locating surface; 24-the first reference field;
30-the second eyeglass;
31-the 3rd minute surface; 32-the 4th minute surface;
33-the second locating surface; 34-the 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 being illustrated more clearly in the utility model, 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 lens group 100 of the utility model preferred embodiment comprises a lens barrel 10, one first eyeglass 20, one second eyeglass 30, one the 3rd eyeglass 40, two shades 51～52, a set collar 53 and one the 4th eyeglass 60.Wherein:
This lens barrel 10 is hollow, and its contrary two ends have respectively the internal communication of a thing side opening 12 and a picture side opening 14 and this lens barrel 10.
This first eyeglass 20 is located in this lens barrel 10, and this first eyeglass 20 have one first minute surface 21 towards this thing side opening 12 and one second minute surface 22 towards this as side opening 14, and on the surface of these the second minute surface 22 place sides, there is one first locating surface 23 and one first reference field 24 arranges around this second minute surface 22, and this first locating surface 23 this first reference field 24 approach this second minute surface 22, and this first locating surface 23 is an inclined-plane in the present embodiment.In addition, the inner tube wall of the outer peripheral edges of this first eyeglass 20 and this lens barrel 10 connect to, to fix the radially relative position between this first eyeglass 20 and this lens barrel 10, and this first eyeglass 20, by the surface label of these the first minute surface 21 place sides being butted on to the inner side of this lens barrel 10, is fixed this first eyeglass 20 in the object of these lens barrel 10 interior positions and reach.
These shades the 51, the 52nd, make and be circular, and these shades 51,52 distinctly have a hole in its center position to have the material of light tight characteristic.
This second eyeglass 30 is arranged in this lens barrel 10, and have one the 3rd minute surface 31 towards this thing side opening 12 and one the 4th minute surface 32 towards this as side opening 14, and on the surface of the 3rd minute surface 31 place sides, there is one second locating surface 33 and one second reference field 34 arranges around the 3rd minute surface 31, and this second locating surface 33 this second reference field 34 approach the 3rd minute surface 32, and this second locating surface 33 is the inclined-plane of a pitch angle and these the first locating surface 23 complementations in the present embodiment.In addition, on the surface of the 4th minute surface 32 place sides, there is one the 3rd reference field 35 and one the 3rd locating surface 36 arranges around the 4th minute surface 32, and the 3rd reference field 35 the 3rd locating surface 36 approach the 4th minute surface 32, and in the present embodiment, the 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, when assembling, just can first this shade 51 be arranged to the surface of these the second minute surface 22 place sides of this first eyeglass 20, and by the hole of this shade 51 just to this second minute surface 22.Then, by this second locating surface 33 and this first locating surface 23 connect to, make this second eyeglass 30 be subject to the restriction of the first eyeglass 20, and fix the radially relative position between the 3rd minute surface 31 and this second minute surface 22, and between this second eyeglass 30 and this lens barrel 10 inner tube walls, be formed with a clearance D 1 and do not contact with this lens barrel 10, this second reference field 34 with this first reference field 24 connect to, 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.
The 3rd eyeglass 40 is arranged in this lens barrel 10, and have one the 5th minute surface 41 towards this thing side opening 12 and one the 6th minute surface 42 towards this as side opening 14, and on the surface of the 5th minute surface 51 place sides, there is one the 4th reference field 43 and one the 4th locating surface 44 arranges around the 5th minute surface 41, and the 4th reference field 43 the 4th locating surface 44 approach 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 complementations in the present embodiment.
Thus, when assembling, just can first this shade 52 be arranged to the surface of the 4th minute surface 32 place sides of this second eyeglass 30, and by the hole of this shade 52 just to the 4th minute surface 32.Then, by the 4th locating surface 44 and the 3rd locating surface 36 connect to, make the 3rd eyeglass 40 be subject to the restriction of the second eyeglass 30, and fix the radially relative position between the 5th minute surface 41 and the 4th minute surface 32, and between the 3rd eyeglass 40 and this lens barrel 10 inner tube walls, be formed with a clearance D 2 and do not contact with this lens barrel 10, the 4th reference field 43 with the 3rd reference field 34 connect to, 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 is make and be circular with hard material, and this set collar 53 has a hole in center position.After this first eyeglass 20 to the 3rd eyeglass 30 is assembled in this lens barrel 10, just this set collar 53 can be filled in this lens barrel 10, and this set collar 53 is pressed against on the surface of the 6th minute surface 42 place sides of the 3rd eyeglass 40, and the hole of this set collar 53 is just to this six minute surface 42, fix the object of these eyeglasses 20,30,40 in this lens barrel 10 except reaching, the hole of this set collar 53 also can for light by and can not affect the optical property of this optical lens group 100.
The 4th 60, eyeglass is arranged in this lens barrel 10, and this set collar 53 approaches this as side opening 14, and with this set collar 53 connect to, 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 lens group 100.
Thus, by above-mentioned, structure phase mutual connection corresponding on these eyeglasses 20,30,40 is supported, just can reach the object of firmly fixing relative position between these eyeglasses 20,30,40, the tolerance that can make this lens barrel 10 can not impact 20,30,40 relative position between these eyeglasses, and make between these eyeglasses 20,30,40 error between relative position can be lower than below 0.002 millimeter, and then can promote significantly the optical property of this optical lens group 100.
Certainly; in real work; the placement of these locating surfaces and these reference fields is not limited with the disclosed position of above-described embodiment; and the foregoing is only the preferred possible embodiments of the utility model; in every case apply the equivalent variations that the utility model instructions and claim are done, ought to be included in scope of patent protection of the present utility model.
Claims (10)
1. an optical lens group, is characterized in that, comprises:
One lens barrel, has the thing side opening and the picture side opening 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 connect to, to fix the radially relative position between this first eyeglass and this lens barrel; In addition, this first eyeglass have a first mirror facing to this thing side opening and one second minute surface towards this as side opening, and on the surface of this second minute surface place side, there is one first locating surface and one first reference field around this second minute surface setting;
One second eyeglass, is arranged in this lens barrel, and have one the 3rd minute surface towards this thing side opening and one the 4th minute surface towards this as side opening, and on the surface of the 3rd minute surface place side, there is one second locating surface and one second reference field around the 3rd minute surface setting; This second locating surface and this first locating surface connect to, to fix the radially relative position between the 3rd minute surface and this second minute surface, and make to be formed with a gap between this second eyeglass and the inner tube wall of this lens barrel; This second reference field and this first reference field connect to, to fix the relative axial position between the 3rd minute surface and this second minute surface; In addition, on the surface of the 4th minute surface place side, there is one the 3rd locating surface and one the 3rd reference field around the 4th minute surface setting; And
One the 3rd eyeglass, is arranged in this lens barrel, and have one the 5th minute surface towards this thing side opening and one the 6th minute surface towards this as side opening, and on the surface of the 5th minute surface place side, there is one the 4th locating surface and one the 4th reference field around the 5th minute surface setting; The 4th locating surface and the 3rd locating surface connect to, to fix the radially relative position between the 5th minute surface and the 4th minute surface, and make to be formed with a gap between the 3rd eyeglass and the inner tube wall of this lens barrel; The 4th reference field and the 3rd reference field connect to, to fix the relative axial position between the 5th minute surface and the 4th minute surface.
2. optical lens group according to claim 1, wherein this first locating surface this first reference field approach this second minute surface, and this second locating surface this second reference field approach the 3rd minute surface.
3. optical lens group according to claim 1, wherein this first locating surface and this second locating surface are respectively an inclined-plane, and the pitch angle complementation of this first locating surface and this second locating surface.
4. optical lens group according to claim 1, wherein the 3rd reference field the 3rd locating surface approach the 5th minute surface, and the 4th reference field the 4th locating surface approach the 6th minute surface.
5. optical lens group according to claim 1, wherein the 3rd locating surface and the 4th locating surface are respectively an inclined-plane, and the pitch angle complementation of the 3rd locating surface and the 4th locating surface.
6. optical lens group according to claim 1, wherein this second reference field and the 3rd reference field are and are parallel to each other.
7. optical lens group according to claim 1, is characterized in that, also includes a shade, makes, and be arranged in this lens barrel and between this first eyeglass and this second eyeglass with the material with light tight characteristic.
8. optical lens group according to claim 1, is characterized in that, also includes a shade, makes, and be arranged in this lens barrel and between this second eyeglass and the 3rd eyeglass with the material with light tight characteristic.
9. optical lens group according to claim 1, is characterized in that, also includes a set collar, be arranged in this lens barrel, and the 3rd eyeglass approaches this as side opening, and with the surface of the 6th minute surface place side connect to.
10. optical lens group according to claim 9, is characterized in that, also includes one the 4th eyeglass, be arranged in this lens barrel, and this set collar approaches this as side opening, and supports with this fixing articulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215389.7U CN203825274U (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215389.7U CN203825274U (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203825274U true CN203825274U (en) | 2014-09-10 |
Family
ID=51480755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420215389.7U Expired - Fee Related CN203825274U (en) | 2014-04-29 | 2014-04-29 | Optical lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203825274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022139A (en) * | 2014-04-29 | 2015-11-04 | 佳凌科技股份有限公司 | Optical lens group |
-
2014
- 2014-04-29 CN CN201420215389.7U patent/CN203825274U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022139A (en) * | 2014-04-29 | 2015-11-04 | 佳凌科技股份有限公司 | Optical lens group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160429 |