CN107817592B - External lens - Google Patents
External lens Download PDFInfo
- Publication number
- CN107817592B CN107817592B CN201711097874.3A CN201711097874A CN107817592B CN 107817592 B CN107817592 B CN 107817592B CN 201711097874 A CN201711097874 A CN 201711097874A CN 107817592 B CN107817592 B CN 107817592B
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- Prior art keywords
- lens
- light
- reflecting surface
- light incident
- external
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- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 description 10
- 230000021615 conjugation Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Abstract
The invention discloses an external lens, which is arranged in front of a lens of a camera and comprises a lens in a rotator shape, wherein the lens comprises a light inlet surface arranged along a rotating surface of the lens, a reflecting surface arranged at the top of the lens and a light outlet surface arranged at the bottom of the lens, and the light outlet surface faces the lens of the camera; the light incident surface is optically conjugated with the reflecting surface, and the reflecting surface is optically conjugated with the light emergent surface. The invention can collect the panoramic image needed by the mobile phone through one lens.
Description
Technical Field
The invention relates to an external lens.
Background
At present, the following methods are generally used for shooting panoramic images by using a mobile phone: taking a plurality of pictures by using a common lens, and then performing software synthesis; and shooting by adopting an external lens of the mobile phone such as a fisheye lens, an ultra-wide angle lens or a combined lens of a plurality of wide angle lenses, and then finishing post-treatment. Disadvantages of the above method include: 1. the panoramic photo shot by the common lens needs to be stabilized by using equipment such as a node cradle head, the operation is complex, the finally presented photo needs to be synthesized by using the photos shot for many times, and the later manufacturing difficulty is high; 2. panoramic pictures shot by using a fisheye lens or an ultra-wide angle lens are large in distortion; 3. the common wide-angle lens is required to be combined by a plurality of lenses, and the assembly process is complicated.
Disclosure of Invention
The invention aims to provide an external lens, which can collect panoramic images required by a camera through one lens.
In order to achieve the above-mentioned objective, the external lens provided by the present invention is disposed in front of a lens of a camera, and includes a lens having a shape of a rotator, the lens includes a light incident surface disposed along a rotation surface of the lens, a reflection surface disposed on a top of the lens, and a light emergent surface disposed on a bottom of the lens, and the light emergent surface faces the lens of the camera; the light incident surface is optically conjugated with the reflecting surface, and the reflecting surface is optically conjugated with the light emergent surface.
In the external lens, the light incident surface is a concave cambered surface in which the rotating surface of the lens is recessed towards one side of the axis of the lens; the top and the bottom of the lens are recessed inwards, so that the reflecting surface and the light emergent surface are both cambered surfaces.
In the external lens, the contours of the light incident surface, the reflecting surface and the light emergent surface are circular arc, elliptical arc or parabolic in the section formed along the axial direction of the lens.
In the external lens, in the section formed along the axial direction of the lens, the outline of the light incident surface is an arc with the radius of 31-32mm, the length of the arc is 9-10mm, and an included angle of 10-12 degrees is formed between the midpoint tangent line of the arc and the axis of the lens.
In the external lens, the outline of the reflecting surface is parabolic X in a section formed along the axial direction of the lens 2 The open end diameter of the reflecting surface is 17-19mm, in a shape of =5y.
In the external lens, the outline of the light-emitting surface is parabolic X in a section formed along the axial direction of the lens 2 The shape of the light emitting surface is= -36y, and the diameter of the opening end of the light emitting surface is 14-16mm.
In the external lens, the minimum distance between the reflecting surface and the light emitting surface is 1-3mm.
In the external lens, a boss is arranged at the bottom of the lens, and the light emergent surface is arranged on the boss.
In the external lens, the surface of the reflecting surface is covered with a reflective coating.
In the external lens, the light incident surface is in a closed ring shape.
The external lens that above-mentioned technical scheme provided, its external on the camera, compared with prior art, its beneficial effect includes: 1. the lens can collect image optical information required by panoramic image imaging of the camera; 2. the lens comprises three conjugate optical surfaces, so that the camera can completely collect the image optical information incident on the light incident surface; 3. the panoramic image collected by the external lens has wide angle, clear imaging and high fidelity; 4. the external lens can be applied to a mobile phone or other camera devices, and is convenient to use.
Drawings
FIG. 1 is a schematic cross-sectional view of an external lens of the present invention;
fig. 2 is a schematic view of an optical path of an external lens according to the present invention.
The lens comprises a 1-lens, a 101-light incident surface, a 102-reflecting surface, a 103-light emergent surface and a 104-boss.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1-2, the external lens provided by the present invention is disposed in front of a lens of a camera, and includes a lens 1 having a rotator shape, wherein the lens 1 includes a light incident surface 101 disposed along a rotation surface of the lens 1, a reflection surface 102 disposed on a top of the lens 1, and a light emergent surface 103 disposed at a bottom of the lens 1, and the light emergent surface 103 faces the lens of the camera; the light incident surface 101 is optically conjugate with the reflecting surface 102, and the reflecting surface 102 is optically conjugate with the light exit surface 103.
Based on the above technical features, the light is refracted through the light incident surface 101 into the lens 1, refracted to the reflecting surface 102, reflected by the reflecting surface 102, reflected to the light emergent surface 103, and emitted to the camera. Through the light-emitting surface 101 arranged on the rotating surface, the light-emitting surface 101 can better collect the external light in the 360-degree range around the lens 1; since the light incident surface 101 is optically conjugate with the reflecting surface 102, the light incident on the light incident surface 101 can be incident on the reflecting surface 102 for reflection; since the reflecting surface 102 is optically conjugate with the light-emitting surface 103, the incident light reflected by the reflecting surface 102 can be reflected to the light-emitting surface 103; therefore, the light emitted from the light emitting surface 103 can be emitted to the camera; because of the optical conjugation between the three optical surfaces of the lens 1, the 360-degree-range external view light incident on the light incident surface 101 can be emitted to the camera in a one-to-one correspondence manner, so that the camera obtains the 360-degree-range external view light through the lens 1 to generate a panoramic image.
The light incident surface 101 is a concave arc surface of the lens 1, which is concave toward the side where the axis of the lens 1 is located; the top and the bottom of the lens 1 are recessed inwards, so that the reflecting surface 102 and the light emergent surface 103 are both arc surfaces; the light incident surface 101 is ensured to collect the external light incident by the lens 1 in a larger range, and the radian of the reflecting surface 102 is set, so that the reflecting surface 102 can reflect the light incident by the light incident surface 101 and the light emergent surface 103 can emit the incident light reflected by the reflecting surface 102.
In the cross section formed along the axial direction of the lens 1, the contours of the light incident surface 101, the reflecting surface 102 and the light emergent surface 103 are in a circular arc shape, an elliptical arc shape or a parabolic shape, so that optical conjugation can be better realized among the three optical surfaces of the lens 1.
In the cross section formed along the axial direction of the lens 1, the contour of the light incident surface 101 is an arc with a radius of 31-32mm, the length of the arc is 9-10mm, an included angle of 10 ° -12 ° is formed between the midpoint tangent of the arc and the axis of the lens 1, in this embodiment, the radius of the arc is 31.85mm, the length of the arc is 9.87mm, and an included angle of 11 ° is formed between the midpoint of the arc and the axis of the lens 1, so that the diameter of the end part of the light incident surface 101, which is close to the reflecting surface 102, is larger than the diameter of the end part of the light incident surface, which is close to the light emergent surface 103, and the light incident surface 101 can be used for incident a wider range of external view light.
In a cross section taken along the axial direction of the lens 1, the profile of the reflecting surface 102 is parabolic X 2 A shape of =5y, the diameter of the opening end of the reflecting surface 102 is 17-19mm; in this embodiment, the top diameter of the reflecting surface is 18.44mm, so that the reflecting surface 102 can satisfy the conjugation condition with the light incident surface 101 and the light emergent surface 103.
In the section along the axial direction of the lens, the outline of the light-emitting surface is parabolic X 2 In the shape of = -36y, the diameter of the opening end of the light-emitting surface is 14-16mm, in this embodiment, the opening diameter of the light-emitting surface 103 is 15mm, and the light-incident surface 101, the reflecting surface 102 and the light-emitting surface 103 satisfy the condition of light conjugation by the arrangement of the arc radii of the light-incident surface 101 and the light-emitting surface 103, so that the incident relationship of the light-incident surface 101 can be totally refracted to the light-emitting surface 103.
The minimum distance between the reflecting surface 102 and the light emitting surface 103 is 1-3mm, and in this embodiment, the minimum distance between the reflecting surface and the light emitting surface is 1.68mm.
A boss 104 is arranged at the bottom of the lens 1, and the light emergent surface 103 is arranged on the boss 104; light incident around the lens 1 is prevented from entering the light-incident surface 101 to the light-emergent surface 103 without being reflected by the reflecting surface 102, so that optical conjugation between the light-incident surface 101 and the reflecting surface 102 is ensured.
The surface of the reflecting surface 102 is covered with a reflective coating, so that the reflecting surface 102 can realize total reflection of incident light rays of the external view in 360-degree range.
The light incident surface 101 is in a closed loop shape, so that the exterior light incident on the light incident surface 101 has continuity.
The optical principle of the external lens is as follows:
in summary, in the external lens of the present invention, the light incident surface 101, the reflecting surface 102 and the light emergent surface 103 are disposed on the lens 1, so that the light emergent surface 103 can completely emit the light incident on the light incident surface 101, and the 360-degree external scene light incident on the light incident surface 101 can completely emit to the camera for imaging; through the cross-section design of the light incident surface 101, the reflecting surface 102 and the light emergent surface 103, the lens 1 can better collect and emergent 360-degree peripheral scenery light; by providing the reflecting surface 102 with a reflective coating, the reflecting surface 102 totally reflects the incident light of the light incident surface 101; by setting the light emitting surface 103 conjugated with the mobile phone camera, the mobile phone camera can receive 360-degree external light incident on the light emitting surface 101.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (5)
1. The external lens is arranged in front of a lens of the camera and is characterized by comprising a lens in a rotator shape, wherein the lens comprises a light incident surface arranged along a rotating surface of the lens, a reflecting surface arranged at the top of the lens and a light emergent surface arranged at the bottom of the lens, and the light emergent surface faces towards the lens of the camera;
the light incident surface is optically conjugated with the reflecting surface, and the reflecting surface is optically conjugated with the light emergent surface;
the light incident surface is a concave cambered surface of which the rotating surface of the lens is concave towards one side where the axis of the lens is located, and the top and the bottom of the lens are concave inwards;
in the section formed along the axial direction of the lens, the outline of the light incident surface is an arc with the radius of 31-32mm, the length of the arc is 9-10mm, and an included angle of 10-12 degrees is formed between the midpoint tangent of the arc and the axis of the lens; the outline of the reflecting surface is parabolic X 2 A shape of =5y, the open end diameter of the reflecting surface being 17-19mm; in the section along the axial direction of the lens, the outline of the light-emitting surface is parabolic X 2 The shape of the light emitting surface is= -36y, and the diameter of the opening end of the light emitting surface is 14-16mm.
2. The external lens as set forth in claim 1, wherein the minimum distance between the reflecting surface and the light-emitting surface is 1-3mm.
3. The external lens of any one of claims 1-2, wherein a boss is disposed at a bottom of the lens, and the light emitting surface is disposed on the boss.
4. The external lens of any of claims 1-2, wherein a surface of the reflective surface is covered with a reflective coating.
5. The external lens of any one of claims 1-2, wherein the light incident surface is in a closed loop shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097874.3A CN107817592B (en) | 2017-11-09 | 2017-11-09 | External lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097874.3A CN107817592B (en) | 2017-11-09 | 2017-11-09 | External lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107817592A CN107817592A (en) | 2018-03-20 |
| CN107817592B true CN107817592B (en) | 2024-03-08 |
Family
ID=61603224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711097874.3A Active CN107817592B (en) | 2017-11-09 | 2017-11-09 | External lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107817592B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541871A (en) * | 2019-01-28 | 2019-03-29 | 孙宇涵 | A kind of various dimensions dynamic solid observation mobile telephone external camera lens |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421724A (en) * | 2001-11-29 | 2003-06-04 | 株式会社立山研开 | Holographic lens |
| JP2006209041A (en) * | 2005-01-25 | 2006-08-10 | Shoji Hoshi | Panorama lens |
| JP2009288521A (en) * | 2008-05-29 | 2009-12-10 | Tanimura Gangu Kenkyusho:Kk | Panorama lens |
| JP2012078674A (en) * | 2010-10-04 | 2012-04-19 | Nippon Seiki Co Ltd | Omnidirectional camera and omnidirectional lens |
| CN102455588A (en) * | 2010-10-28 | 2012-05-16 | 鸿富锦精密工业（深圳）有限公司 | Panoramic shooting system |
| WO2013054252A1 (en) * | 2011-10-10 | 2013-04-18 | I-Visus S.R.L. | Device for taking 360° panoramic images |
| CN104639688A (en) * | 2015-02-02 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Mobile phone panoramic lens |
| CN207457591U (en) * | 2017-11-09 | 2018-06-05 | 刘超 | A kind of external lens |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6373642B1 (en) * | 1996-06-24 | 2002-04-16 | Be Here Corporation | Panoramic imaging arrangement |
| JP3651844B2 (en) * | 2001-02-09 | 2005-05-25 | シャープ株式会社 | Imaging device and manufacturing method thereof |
-
2017
- 2017-11-09 CN CN201711097874.3A patent/CN107817592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421724A (en) * | 2001-11-29 | 2003-06-04 | 株式会社立山研开 | Holographic lens |
| JP2006209041A (en) * | 2005-01-25 | 2006-08-10 | Shoji Hoshi | Panorama lens |
| JP2009288521A (en) * | 2008-05-29 | 2009-12-10 | Tanimura Gangu Kenkyusho:Kk | Panorama lens |
| JP2012078674A (en) * | 2010-10-04 | 2012-04-19 | Nippon Seiki Co Ltd | Omnidirectional camera and omnidirectional lens |
| CN102455588A (en) * | 2010-10-28 | 2012-05-16 | 鸿富锦精密工业（深圳）有限公司 | Panoramic shooting system |
| WO2013054252A1 (en) * | 2011-10-10 | 2013-04-18 | I-Visus S.R.L. | Device for taking 360° panoramic images |
| CN104639688A (en) * | 2015-02-02 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Mobile phone panoramic lens |
| CN207457591U (en) * | 2017-11-09 | 2018-06-05 | 刘超 | A kind of external lens |
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| Publication number | Publication date |
|---|---|
| CN107817592A (en) | 2018-03-20 |
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