CN215526215U - Panoramic optical annular objective lens - Google Patents
Panoramic optical annular objective lens Download PDFInfo
- Publication number
- CN215526215U CN215526215U CN202122207399.9U CN202122207399U CN215526215U CN 215526215 U CN215526215 U CN 215526215U CN 202122207399 U CN202122207399 U CN 202122207399U CN 215526215 U CN215526215 U CN 215526215U
- Authority
- CN
- China
- Prior art keywords
- lens
- annular
- panoramic
- objective
- image side
- 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.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of panoramic annular imaging, in particular to a panoramic optical annular objective lens which comprises a panoramic annular lens I, a panoramic annular lens II, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along the optical axis direction; the object side surface of the first lens is a concave surface, the image side surface of the first lens is a convex surface, and the diopter of the first lens is negative; the object side surface of the second lens is a convex surface, the image side surface of the second lens is a concave surface, and the diopter of the second lens is negative; the object side surface and the image side surface of the third lens are convex surfaces, and the diopter of the third lens is positive; the object side surface and the image side surface of the fourth lens are convex surfaces, and the diopter of the fourth lens is positive; the object side surface and the image side surface of the fifth lens are convex surfaces, and the diopter of the fifth lens is positive. The utility model optimizes the type and arrangement mode of the lens, ensures that the resolution of the objective lens can be ensured under the condition of only adopting 8 lenses, and further simplifies the structure of the objective lens.
Description
Technical Field
The utility model relates to the technical field of panoramic annular imaging, in particular to a panoramic optical annular objective lens.
Background
With the continuous development of scientific technology, the panoramic observation with a large view field of 360 degrees becomes a development trend, and is widely applied to the fields of movie cameras, medical instruments, monitoring systems, robot systems, flight command and control systems, motion cameras, unmanned vehicles and the like.
Panoramic observation generally adopts a panoramic annular imaging technology, which is a new imaging mode and can project a cylindrical view field in a range of 360 degrees around an optical axis of an optical system into an annular area on a two-dimensional plane, so that 360-degree panoramic staring imaging is realized in an optical principle. But the imaging method has a large defect in the imaging aspect, which mainly includes that the image resolution is low and the local detail imaging is poor.
For this reason, the patent with application number CN201911166009.9 discloses an 8K high resolution panoramic annular optical lens, which includes a panoramic annular lens head unit and a subsequent lens group coaxially mounted in sequence, wherein the panoramic annular lens head unit includes panoramic annular lenses PAL1 and PAL2 arranged in sequence, and the subsequent lens group includes lenses G1 to G8 arranged in sequence, but the number of lenses in the lens is as many as 10, which is not favorable for the minimum development of the lens.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a panoramic optical annular objective lens, which reduces the number of lenses by optimizing the configuration of the lenses on the premise of ensuring the resolution, thereby achieving the purpose of simplifying the structure.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a panoramic optical zone objective lens comprises a first panoramic annular lens, a second panoramic annular lens, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis direction;
the object side surface of the first lens is a concave surface, the image side surface of the first lens is a convex surface, and the diopter of the first lens is negative; the object side surface of the second lens is a convex surface, the image side surface of the second lens is a concave surface, and the diopter of the second lens is negative; the object side surface and the image side surface of the third lens are convex surfaces, and the diopter of the third lens is positive; the object side surface and the image side surface of the fourth lens are convex surfaces, and the diopter of the fourth lens is positive; the object side surface and the image side surface of the fifth lens are convex surfaces, and the diopter of the fifth lens is positive; the object side surface of the sixth lens is a concave surface, the image side surface of the sixth lens is a concave surface, and the diopter of the sixth lens is negative;
and the image side surface of the second lens is in gluing connection with the object side surface of the third lens.
Preferably, the first lens is a negative focal length plastic aspheric lens.
Preferably, the second lens is a negative focal length glass lens.
Preferably, the third lens is a positive focal length glass lens.
Preferably, the fourth lens is a positive focal length glass spherical lens.
Preferably, the fifth lens is a positive focal plastic aspheric lens.
Preferably, the sixth lens is a negative focal length plastic aspheric lens.
Preferably, the object side surface of the first panoramic annular lens is provided with a convex first annular refraction part and a concave first annular reflection part, the image side surface of the second panoramic annular lens is provided with a convex second annular reflection part and a convex first circular refraction part, the image side surface of the first panoramic annular lens is connected with the object side surface of the second panoramic annular lens in a gluing mode, and the gluing surface of the first panoramic annular lens and the gluing surface of the second panoramic annular lens are arranged in a bending mode towards the image side surface.
Preferably, the panoramic optical zone objective further comprises an optical filter disposed between the sixth lens and the focal plane of the detector.
Preferably, the panoramic optical zone objective further comprises an aperture stop disposed between the second panoramic annular lens and the first lens.
Advantageous effects
The utility model optimizes the type and arrangement mode of the lens, ensures that the resolution of the objective lens can be ensured under the condition of only adopting 8 lenses, and further simplifies the structure of the objective lens.
Drawings
FIG. 1 is a schematic view of the panoramic optical zone objective of the present invention;
fig. 2 is a schematic structural diagram of a panoramic annular lens I and a panoramic annular lens II.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Example (b): as shown in fig. 1 and 2, a panoramic optical zone objective lens includes a first panoramic annular lens 7, a second panoramic annular lens 8, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens 6, which are arranged in order in an optical axis direction from an object side to an image side.
The object side face of the first panoramic annular lens 7 is provided with a first annular refraction portion 7-1 of an outer convex and a first annular reflection portion 7-2 of an inner concave, the image side face of the second panoramic annular lens 8 is provided with a second annular reflection portion 8-1 of an outer convex and a first circular refraction portion 8-2 of an outer convex, the image side face of the first panoramic annular lens 7 is connected with the object side face of the second panoramic annular lens 8 in a gluing mode, and the first panoramic annular lens 7 and the gluing face of the second panoramic annular lens 8 are arranged towards the image side face in a bending mode.
The first lens element 1 is a negative focal length plastic aspheric lens, and the object side surface of the first lens element 1 is a concave surface and the image side surface is a convex surface. The second lens 2 is a negative focal length glass lens, and the object side surface of the second lens 2 is a convex surface. The third lens 3 is a positive focal length glass lens, and the image side surface of the third lens 3 is a convex surface. The second lens 2 is connected with the third lens 3 in a gluing mode, and the gluing surfaces of the second lens 2 and the third lens 3 are arranged towards the object side in a bending mode. The positive lens generates negative chromatic aberration, and the negative lens generates positive chromatic aberration, so that the negative effect of correcting the chromatic aberration of the system is achieved by adopting a positive and negative lens gluing mode. The fourth lens 4 is a positive focal length glass spherical lens, and the fourth lens 4 is a biconvex lens. The fifth lens 5 is a positive focal length plastic aspheric lens, and the fifth lens 5 is a biconvex lens. The sixth lens element 6 is a negative focal length plastic aspheric lens element, and the object-side surface and the image-side surface of the sixth lens element 6 are concave surfaces.
In addition, the focal lengths of the first lens 1 and the second lens 2 are f1 and f2, respectively, and it is necessary to satisfy: 1.73< f2/f1< 1.80; the focal lengths of the fourth lens 4, the fifth lens 5 and the sixth lens 6 are f4, f5 and f6 respectively, and the following requirements are met: -3.46< f5/f6< -3.1, -1.36< f4/f2< -1.27. Specifically, f1 may be-7.7, f2 may be-13.3, f4 may be 17.98, f5 may be 7.8958, and f6 may be-2.288.
The radius of curvature of the object-side surface of the first lens 1 may be-3.090 mm and the radius of curvature of the image-side surface of the first lens 1 may be-14.280 mm. The radius of curvature of the object-side surface of the second lens 2 may be 4.910 mm, and the radius of curvature of the image-side surface of the second lens 2 may be 3.250 mm. The radius of curvature of the object-side surface of the third lens 3 may be 3.250 mm and the radius of curvature of the image-side surface of the third lens 3 may be-9.900 mm. The radius of curvature of the object-side surface of the fourth lens 4 may be 22.100 mm and the radius of curvature of the image-side surface of the fourth lens 4 may be-15.800 mm. The radius of curvature of the object-side surface of the fifth lens 5 may be 5.100 mm, and the radius of curvature of the image-side surface of the fifth lens 5 may be-17.2500 mm. The radius of curvature of the object-side surface of the sixth lens 6 may be-1.550 mm and the radius of curvature of the image-side surface of the sixth lens 6 may be 41.051 mm.
External light firstly enters the first panoramic annular lens 7 from the first annular refraction part 7-1 of the first panoramic annular lens 7, then enters the second panoramic annular lens 8 after being refracted through the first panoramic annular lens 7 and the gluing surface of the second panoramic annular lens 8, then returns to the first panoramic annular lens 7 after being reflected by the second annular reflection part 8-1 of the second panoramic annular lens 8, finally enters the second panoramic annular lens 8 after being reflected by the first annular reflection part 7-2 of the first panoramic annular lens 7, is transmitted by the first circular refraction part 8-2 of the second panoramic annular lens 8, then sequentially passes through the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6, and finally reaches the focal plane 10 of the detector.
The utility model optimizes the configuration modes (including types and arrangement modes) of the lenses, ensures the resolution of the objective lens under the condition of only adopting 8 lenses, and reduces 2 lenses compared with the prior art, thereby simplifying the structure of the objective lens and further reducing the cost of the objective lens.
The panoramic optical annular objective further comprises an optical filter 11 arranged between the sixth lens 6 and the focal plane 10 of the detector. The optical filter 11 is an infrared cut filter to prevent infrared rays from passing through the lens to cause picture distortion, and simultaneously, to prevent unnecessary heat from burning the objective lens, thereby improving the performance of the objective lens.
The panoramic optical annular objective further comprises an aperture diaphragm 9 arranged between the second panoramic annular lens 8 and the first lens 1. The aperture diaphragm 9 can remove the light beam with larger deviation from the optical axis, thereby further improving the definition and the resolution of the objective lens.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (10)
1. A panoramic optical zone objective lens characterized by: the panoramic lens comprises a panoramic annular lens I (7), a panoramic annular lens II (8), a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5) and a sixth lens (6) which are arranged in sequence from the object side to the image side along the optical axis direction;
the object side surface of the first lens (1) is a concave surface, the image side surface of the first lens is a convex surface, and the diopter of the first lens is negative; the object side surface of the second lens (2) is a convex surface, the image side surface of the second lens is a concave surface, and the diopter of the second lens is negative; the object side surface and the image side surface of the third lens (3) are convex surfaces, and the diopter of the third lens is positive; the object side surface and the image side surface of the fourth lens (4) are convex surfaces, and the diopter of the fourth lens is positive; the object side surface and the image side surface of the fifth lens (5) are convex surfaces, and the diopter of the fifth lens is positive; the object side surface of the sixth lens (6) is a concave surface, the image side surface of the sixth lens is a concave surface, and the diopter of the sixth lens is negative;
and the image side surface of the second lens (2) is in gluing connection with the object side surface of the third lens (3).
2. The panoramic optical annulus objective of claim 1 wherein: the first lens (1) is a negative focal length plastic aspheric lens.
3. The panoramic optical annulus objective of claim 1 wherein: the second lens (2) is a negative focal length glass lens.
4. The panoramic optical annulus objective of claim 1 wherein: the third lens (3) is a positive focal length glass lens.
5. The panoramic optical annulus objective of claim 1 wherein: the fourth lens (4) is a positive focal length glass spherical lens.
6. The panoramic optical annulus objective of claim 1 wherein: the fifth lens (5) is a positive focal length plastic aspheric lens.
7. The panoramic optical annulus objective of claim 1 wherein: the sixth lens (6) is a negative focal length plastic aspheric lens.
8. The panoramic optical annulus objective of claim 1 wherein: the object side face of panorama annular lens (7) is equipped with first annular refraction portion (7-1) of evagination and first annular reflection part (7-2) of indent, the image side face of panorama annular lens two (8) is equipped with second annular reflection part (8-1) of evagination and first circular refraction portion (8-2) of evagination, the image side face of panorama annular lens (7) with the object side face veneer of panorama annular lens two (8) is connected, just panorama annular lens (7) with the veneer face of panorama annular lens two (8) is towards the crooked setting of image side face.
9. The panoramic optical annulus objective of claim 1 wherein: the panoramic optical annular objective further comprises an optical filter (11) arranged between the sixth lens (6) and the focal plane (10) of the detector.
10. The panoramic optical annulus objective of claim 1 wherein: the panoramic optical annular objective lens also comprises an aperture diaphragm (9) arranged between the second panoramic annular lens (8) and the first lens (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122207399.9U CN215526215U (en) | 2021-09-13 | 2021-09-13 | Panoramic optical annular objective lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122207399.9U CN215526215U (en) | 2021-09-13 | 2021-09-13 | Panoramic optical annular objective lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215526215U true CN215526215U (en) | 2022-01-14 |
Family
ID=79796842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122207399.9U Active CN215526215U (en) | 2021-09-13 | 2021-09-13 | Panoramic optical annular objective lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215526215U (en) |
-
2021
- 2021-09-13 CN CN202122207399.9U patent/CN215526215U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6615974B2 (en) | Zoom lens system and imaging apparatus | |
| CN110646920B (en) | Long-focal-length vehicle-mounted optical lens and working method thereof | |
| CN102495460A (en) | Panoramic imaging lens | |
| JP2019139238A (en) | Image-capturing optical system and image-capturing device | |
| CN105814471A (en) | Wide angle optical system and endoscope | |
| CN111948789A (en) | Optical imaging lens matched with liquid lens | |
| CN102722017B (en) | Multi-waveband parfocal continuous focal length change optical device | |
| CN215526215U (en) | Panoramic optical annular objective lens | |
| CN107490843A (en) | A kind of intelligent interaction robot of day and night | |
| CN108333728B (en) | High-image-quality ultra-wide-angle mobile phone lens | |
| CN115032776B (en) | Long Jiao Changfa blue video lens | |
| CN115793217A (en) | Zoom lens and imaging device | |
| CN217385973U (en) | Zoom lens | |
| CN112285888B (en) | Big light ring FA camera lens | |
| CN212433493U (en) | Optical imaging lens matched with liquid lens | |
| CN207281372U (en) | A kind of wide working distance machine visual lens of small-sized focal length | |
| CN215526219U (en) | L-shaped spherical fisheye lens | |
| CN111352224A (en) | Catadioptric panoramic imaging system and imaging method thereof | |
| CN215494323U (en) | Panoramic annular belt imaging device with glass and plastic mixed | |
| CN108897118A (en) | A kind of infrared visible waveband dual-purpose type mega pixel camera lens | |
| CN115185072B (en) | Aspheric wide-angle long flange video lens | |
| CN215813518U (en) | A camera lens for unmanned aerial vehicle | |
| CN114647068B (en) | Optical system | |
| CN220730508U (en) | Endoscope optical system | |
| CN217561820U (en) | Zoom lens and imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |