CN106908936A - A kind of panoramic optical camera lens and image acquisition device - Google Patents
A kind of panoramic optical camera lens and image acquisition device Download PDFInfo
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- CN106908936A CN106908936A CN201510974528.3A CN201510974528A CN106908936A CN 106908936 A CN106908936 A CN 106908936A CN 201510974528 A CN201510974528 A CN 201510974528A CN 106908936 A CN106908936 A CN 106908936A
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
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Abstract
A kind of panoramic optical camera lens and and image acquisition device, wherein camera lens include refracting-reflecting lens group (110) and lens group (120).Refracting-reflecting lens group includes two catadioptric mirrors glued together, the central area on the preceding surface of the first catadioptric mirror is reflector space, remaining region is regional transmission, and the central area on the rear surface of the second catadioptric mirror is regional transmission, and remaining region is reflector space;Lens group is arranged in the light path after refracting-reflecting lens group.Due to collecting incident light with the refracting-reflecting lens group that reflection is combined using refraction, light reflects the multiple convergence reflected again by first reflecting to reflect again again between two catadioptric mirrors, the resolution ratio of field of view edge can be effectively lifted, improves image quality, also cause that device design is more compact.
Description
Technical field
The present invention relates to image technology field, and in particular to a kind of panoramic optical camera lens and corresponding full-view image harvester.
Background technology
Generally it is possible to 360 degree around collection of a device for the image of annular region referred to as full-view image harvester.With the continuous improvement of the development of digital imaging technique, especially pixel quantity and image-capable, the use of full-view image harvester is more and more universal.
Current existing full-view image technology includes following several:
1. rotary taking is carried out around axle using common image acquisition device, then image is carried out seamless spliced to obtain full-view image.This mode needs to carry out substantial amounts of image mosaic calculating, it is difficult to ensure real-time, and same position can not be continuously shot, it is difficult to the coherent video of record.
2. fish eye lens is installed in the front end of sensor devices, panoramic imagery is carried out using its ultra-wide angle.Because fish eye lens has the very big curvature of field and relatively low resolution ratio, it is difficult to obtain high-quality image reduction effect.
3. full-view image is obtained using speculum.The distortion of this technology is smaller, but needs to set discrete reflecting element, and installation accuracy is difficult to control, and it is less to actually enter the light quantity of illuminant module, it is difficult to obtain clearly image.
The Application No. CN201510183168.5 of one of the present inventor preceding proposition herein, proposes a kind of full-view image harvester of use refracting-reflecting lens group in the Chinese invention patent application of entitled " full-view image harvester ".On this basis, it is still necessary to developing the improvement more having practical value.
The content of the invention
A kind of panoramic optical camera lens is provided according to an aspect of of the present present invention, including:Refracting-reflecting lens group and the first lens group.Wherein, refracting-reflecting lens group includes the first catadioptric mirror and the second catadioptric mirror, the central area on the preceding surface of the first catadioptric mirror is reflector space, remaining region is regional transmission, the rear surface of the first catadioptric mirror is together with the preceding surface bonding of the second catadioptric mirror and is regional transmission, the central area on the rear surface of the second catadioptric mirror is regional transmission, and remaining region is reflector space;First lens group includes at least one lens, is arranged in the light path after refracting-reflecting lens group.
A kind of full-view image harvester is provided according to another aspect of the present invention, including according to panoramic optical camera lens of the invention and the first image collecting module.Wherein, the first image collecting module includes the first sensor devices and circumferential arrangement module, and the first sensor devices are used to sense the light assembled through panoramic optical camera lens, and circumferential arrangement module at least is used to be powered to the first sensor devices and carry out signal with it to interact.
According to full-view image harvester of the invention, preferably also include the second lens group and the second image collecting module, the front of the reflector space of the first catadioptric mirror is arranged at along the incident direction of original light, to gather the image in the region blocked by the reflector space of the first catadioptric mirror.
According to panoramic optical camera lens of the invention, incident light is collected with the refracting-reflecting lens group that reflection is combined using refraction, light reflects the multiple convergence reflected again by first reflecting to reflect again again between two catadioptric mirrors, on the one hand convergent effect can at double be lifted, help to obtain clearly image, on the other hand the resolution ratio of field of view edge can be effectively lifted, improves image quality, it is more compact that another further aspect also causes that device is designed.Additionally, forming refracting-reflecting lens using two eyeglass gluings, can be more convenient for carrying out the optical design of eyeglass, superior performance is realized with simple processing.So that
Further, mode of the full-view image harvester preferably by integrated two image collecting modules, enabling do not have blind area in the region of almost half sphere.
Below in conjunction with accompanying drawing, to being described in detail according to specific example of the invention.
Brief description of the drawings
Fig. 1 is the structural representation according to the panoramic optical camera lens of embodiments of the invention 1;
Fig. 2 is the structural representation according to the panoramic optical camera lens of embodiments of the invention 2;
Fig. 3 is the schematic diagram according to the full-view image harvester of embodiments of the invention 3;
Fig. 4 is the schematic diagram according to the full-view image harvester of embodiments of the invention 4;
Fig. 5 is the schematic diagram of the angle of visual field of device in embodiment 4.
Specific embodiment
Embodiment 1
Fig. 1, including the lens group 120 of refracting-reflecting lens group 110 and first are referred to according to a kind of implementation method of panoramic optical camera lens of the invention.
Herein, described using " preceding surface " and " surface afterwards " along two surfaces that optical axis direction is relative on an optical mirror slip, wherein, the surface that incident light is first passed through is referred to as preceding surface, after by surface be referred to as after surface.In refracting-reflecting lens group, there is reflection due to, incident light may repeatedly pass through some surfaces, and order when " preceding surface " and " surface afterwards " is passed through first with incident light is defined.
Refracting-reflecting lens group 110 includes two catadioptric mirrors glued together, i.e. the first catadioptric mirror 111 and the second catadioptric mirror 112, and this cemented doublet not only processes simple but also superior performance.The central area on the preceding surface of the first catadioptric mirror is reflector space 1111, and remaining region is regional transmission.The rear surface of the first catadioptric mirror is together with the preceding surface bonding of the second catadioptric mirror and is regional transmission.The central area on the rear surface of the second catadioptric mirror is regional transmission, and remaining region is reflector space 1121.In other embodiments, the need for according to optical design, the first catadioptric mirror and the second catadioptric mirror can not also it is glued and together with being simply brought into close contact.
As shown in Figure 1, incident ray is injected from the regional transmission on the preceding surface of the first catadioptric mirror, then pass through the rear surface of the first catadioptric mirror and the preceding surface of the second catadioptric mirror, then reflected by the reflector space on the rear surface of the second catadioptric mirror, then the preceding surface of the second catadioptric mirror and the rear surface of the first catadioptric mirror are again passed through, then reflected by the reflector space on the preceding surface of the first catadioptric mirror, then third time then passes through the regional transmission injection on the rear surface of the second catadioptric mirror through the rear surface of the first catadioptric mirror and the preceding surface of the second catadioptric mirror.Therefore, the overall diopter of refracting-reflecting lens group is being for just, wherein, the diopter of the first catadioptric mirror may be configured as negative and the diopter of the second catadioptric mirror may be configured as just.
Because the preceding surface of the first catadioptric mirror and the rear surface of the second catadioptric mirror are divided into two regions of reflection and transmission, therefore whole surface both can be the compound curved surface constituted using the simple surface of single curved-surface shape, or by different curve form.For example, the preceding surface of the first catadioptric mirror can be simple convex surface, or compound curved surface, for example for convex surface, reflector space is plane or concave surface or the convex surface different from the curved-surface shape of regional transmission to its regional transmission.Similarly, the rear surface of the second catadioptric mirror can be simple convex surface, or compound curved surface, and for example for convex surface, regional transmission is plane or concave surface or the convex surface different from the curved-surface shape of reflector space to its reflector space.Alleged convex surface or concave surface can be specifically sphere or aspherical, such as conical surface or other secondary or high-order curved surfaces etc..The rear surface of the first catadioptric mirror(That is the preceding surface of the second catadioptric mirror)Can be then convex surface, concave surface or plane etc..
In the present embodiment, the preceding surface of the first catadioptric mirror is compound curved surface, and its regional transmission is convex spherical, and reflector space is concave spherical surface, and rear surface is concave spherical surface;The rear surface of the second catadioptric mirror is convex spherical.The reflector space of catadioptric mirror can be formed using modes such as such as plated films or coating.Due to all using sphere curved surface so that said structure is highly susceptible to processing.In other embodiments, catadioptric mirror can also use different optical designs to provide required performance.
First lens group 120 includes at least one lens, is arranged in the light path after refracting-reflecting lens group, and light enters the first lens group after being projected from the regional transmission on the rear surface of the second catadioptric mirror.Because refracting-reflecting lens group is mainly used in collecting light, and the first lens group is mainly used in imaging, therefore, the size of the eyeglass in refracting-reflecting lens group can be substantially larger than the size of the eyeglass in the first lens group, and for example the former can be twice of the latter or so or more.The design of the first lens group refers to the characteristic of common imaging lens.The design parameter of each eyeglass can specifically be determined according to the need for application scenarios.
In the present embodiment, first lens group is made up of seven lens, it is the first negative lens 121 to be followed successively by diopter along the order of light path, diopter is the second positive lens 122, diopter is the 3rd negative lens 123, and diopter is the 4th negative lens 124, and diopter is the 5th negative lens 125, diopter is the 6th positive lens 126, and diopter is the 7th negative lens 127.This combination causes that the optical design of each eyeglass becomes prone to realize, for example, entirely the refractive index of the material of all eyeglasses in panoramic optical camera lens can be designed as no more than 1.9.In other embodiments, the first lens group can also include more or less eyeglass number, for example, generally may include 2 to 8 lens.
It is aspherical preferably by the preceding surface of the first lens 121 and back surface design to take into account excellent systematic function and relatively low difficulty of processing in the present embodiment, and is sphere by the preceding surface of other lenses and back surface design.Certainly, because plane can be considered that radius of curvature is infinitely great sphere, therefore alleged sphere also includes plane.The alleged aspherical even aspheric surface curved surface that can for example use as described by following formula:
z=cr2/(1+√(1-(1+k)c2r2))+a1r2+a2r4+a3r6+a4r8+a5r10+…
Wherein, z is aspherical with each and the intersection point of optical axis is as starting point, and in the axial direction value on the direction of optical axis, k is quadratic surface coefficient, and c is the curvature of centre of lens surface;R is the height of lens surface, a1, a2, a3, a4, a5... it is asphericity coefficient.Can be by the aspherical astigmatism and aberration to correct whole optical system of the first lens, on the one hand cause that whole optical system has small astigmatism and imaging aberrations are also relatively uniform, with excellent image quality, on the other hand cause that whole optical system has low complexity and processing sensitivity, effectively reduce holistic cost.
As one kind preferred embodiment, in the present embodiment, the aperture (Aperture) of panoramic optical camera lens is arranged at the position of the regional transmission on the rear surface of the second catadioptric mirror.It is herein the optimum position that aperture is set, can farthest reduces because of the veiling glare that the reflection of lens group causes.
Additionally, in order to realize more excellent performance, the present embodiment and other be can be further provided with according to the panoramic optical camera lens of embodiments of the present invention in following feature one or more:
At least one of first lens group lens can be moved along optical axis so that whole panoramic optical camera lens is formed as autofocus lenses, and lens may be selected from along the drive device that optical axis is moved:Stepper motor, polyhedron ultrasonic motor, disk type electromagnetic motor and voice coil motor etc.;
Refracting-reflecting lens group can be supported on the installation frame of the first lens group by a transparent protective cover; so that while lens construction is more consolidated also without prejudice to light incidence, the shape of protective cover can be for example spherical, cylinder; cone, or other rotationally symmetrical shapes.
The panoramic optical camera lens of the present embodiment can have 80 ° to 190 ° of the angle of visual field, compared with traditional fish eye lens, with image quality higher, and due to by the way of double reflection, can cause that the resolution ratio of field of view edge is greatly improved, it is adaptable to as the camera lens of CCTV camera, vehicle-mounted vidicon etc..
Embodiment 2
Fig. 2, including the lens group 220 of refracting-reflecting lens group 210 and first are referred to according to the another embodiment of panoramic optical camera lens of the invention.
The present embodiment is similar to Example 1, refracting-reflecting lens group 210 includes two catadioptric mirrors glued together, that is the first catadioptric mirror 211 and the second catadioptric mirror 212, the central area on the preceding surface of the first catadioptric mirror is reflector space 2111, the central area on the rear surface of the second catadioptric mirror is regional transmission, and remaining region is reflector space 2121;First lens group is made up of seven lens, it is the first negative lens 221 to be followed successively by diopter along the order of light path, diopter is the second positive lens 222, diopter is the 3rd negative lens 223, diopter is the 4th negative lens 224, diopter is the 5th negative lens 225, and diopter is the 6th positive lens 226, and diopter is the 7th negative lens 227.Wherein, the preceding surface of the first lens 221 and back surface design are aspherical, and the surface of other lenses is sphere.Therefore, such as the non-difference for explicitly pointing out, the various descriptions in embodiment 1 are applied to the present embodiment.
The present embodiment is that the reflector space on the preceding surface of the first catadioptric mirror 211 is plane with the difference part of embodiment 1.The present embodiment equally has high imaging quality compared with Example 1, and difficulty of processing is further reduced, and visual field scope slightly has diminution, can have 75 ° to 170 ° of the angle of visual field.Based on above-mentioned difference, although each eyeglass in the present embodiment has similar positive negative characteristic compared with Example 1, but specific optical design parameters can be with difference.
Embodiment 3
Fig. 3, including panoramic optical camera lens and the first image collecting module 330 are referred to according to a kind of implementation method of full-view image harvester of the invention.
Panoramic optical camera lens can be specifically used according to various implementations of the invention, and for example with the structure described in embodiment 1 or 2, including the lens group 320 of refracting-reflecting lens group 310 and first, internal structure is repeated no more.
In the present embodiment, first lens group 320 is autofocus lenses group, at least one lens 327 i.e. therein can be moved along optical axis, and the position of the lens 327 shown in Fig. 3 is only schematical, can be actually any one lens in the first lens group.Auto-focusing specifically can be using the type of drive of traditional voice coil motor or stepper motor, also can be using type of drive such as one of the present inventor polyhedron ultrasonic motor, the disk type electromagnetic motors that propose in the early time.Refracting-reflecting lens group 310 is supported on the installation frame of the first lens group by a transparent protective cover 313, in the present embodiment, is supported in the first image collecting module 330.
First image collecting module 330 includes the first sensor devices 331 and circumferential arrangement module 332.Wherein the first sensor devices are used to sense the light assembled through panoramic optical camera lens, and circumferential arrangement module at least is used to be powered to the first sensor devices and carry out signal with it to interact.For example, it may include one or more in following module:
Power module, it includes charging module and electricity storage module, and wherein electricity storage module is rechargeable battery or super capacitor, and charging module can use wireless charging mode;
System control module, the operation for controlling whole device;
Image processing module, the image of the round pie for sensor devices to be collected is transformed to the image of cylindrical shape;
Data memory module, for data storage;
Communication module, including wired or wireless communication module, the communication mode of wherein wire communication module may be selected from ethernet communication, analog signal communication, adsl communication, usb communication, the communication mode of wireless communication module may be selected from WiFi communication, 3G/4G radio communications, Bluetooth communication, infrared communication, WiMax communications;
Lighting module, illumination is provided for the region for image collection.
Various circumferential arrangement modules can together with the first sensor devices it is integrated on circuit boards, do not shown one by one in figure.When the power module of device uses communication using wireless charging mode and communication module, the installation of device will be very convenient.
Embodiment 4
Fig. 4 is referred to according to the another embodiment of full-view image harvester of the invention.The present embodiment is the improvement on the basis of embodiment 3, in addition to including the panoramic optical camera lens described in embodiment 3 and the first image collecting module 330, also including the second lens group 440 and the second image collecting module 450.
Second lens group 440 is arranged at the front of the reflector space of the first catadioptric mirror along the incident direction of original light, and it includes at least one lens.In the present embodiment, the second lens group is also adopted by autofocus lenses, i.e., with least one lens 441 that can be moved along optical axis.In other embodiments, if less demanding to image quality, the second lens group can also use tight shot.
Second image collecting module 450 includes the second sensor devices 451 and part of its periphery configuration module 452 for sensing the light assembled through the second lens group, such as power module, system control module and communication module.As one kind preferred embodiment, in the present embodiment, the second image collecting module shares part of its periphery configuration module, such as image processing module, data memory module and lighting module etc. by way of radio communication with the first image collecting module.The shared of module causes that installation cost is greatly lowered.In other embodiments, the second image collecting module can also have independent whole circumferential arrangement modules, or by line and the shared whole circumferential arrangement module of the first image collecting module.Additionally, in the present embodiment, the second sensor devices are arranged on the back side of the reflector space on the preceding surface of the first catadioptric mirror.This mounting means causes that the size of device is more compact, installs also more simple.
The use of the second lens group and the second image collecting module can effectively reduce the blind area of image acquisition device.With reference to Fig. 5, the angle of visual field of the present embodiment image acquisition device is illustrated therein is.Wherein Φ 1 is the maximum field of view angle of the first image collecting module, the blind area that Φ 2 is formed by the reflector space of the first catadioptric mirror at the center of the angle of visual field of the first image collecting module.For clearly for the device in embodiment 3, the image in Φ 2 is sightless, and this is intolerable for some important application scenarios.Φ 3 is the angle of visual field of the second lens group, and it exists so that blind area Φ 2 is effectively reduced.
As one kind preferred embodiment, Φ 3 is designed as not less than Φ 2, then sightless blind area can be covered by the viewing area of the second image collecting module completely for the first image collecting module, so that whole image acquisition device does not have blind area in the range of nearly half sphere.
Use above specific example is set forth to principle of the invention and implementation method, it should be appreciated that embodiment of above is only intended to help and understands the present invention, and should not be construed as limiting the invention.For those of ordinary skill in the art, according to thought of the invention, above-mentioned specific embodiment can be changed.
Claims (10)
1. a kind of panoramic optical camera lens, it is characterised in that including:
Refracting-reflecting lens group, it includes the first catadioptric mirror and the second catadioptric mirror, the central area on the preceding surface of the first catadioptric mirror is reflector space, remaining region is regional transmission, together with the rear surface of the first catadioptric mirror is brought into close contact with the preceding surface of the second catadioptric mirror and it is regional transmission, the central area on the rear surface of the second catadioptric mirror is regional transmission, and remaining region is reflector space;With
First lens group, it includes at least one lens, is arranged in the light path after the refracting-reflecting lens group;
Incident ray is injected from the regional transmission on the preceding surface of the first catadioptric mirror, then pass through the rear surface of the first catadioptric mirror and the preceding surface of the second catadioptric mirror, then reflected by the reflector space on the rear surface of the second catadioptric mirror, then the preceding surface of the second catadioptric mirror and the rear surface of the first catadioptric mirror are again passed through, then reflected by the reflector space on the preceding surface of the first catadioptric mirror, then third time passes through the rear surface of the first catadioptric mirror and the preceding surface of the second catadioptric mirror, then pass through the regional transmission on the rear surface of the second catadioptric mirror, subsequently into the first lens group.
2. camera lens as claimed in claim 1, it is characterised in that
The aperture of the panoramic optical camera lens is arranged at the position of the regional transmission on the rear surface of the second catadioptric mirror.
3. camera lens as claimed in claim 1 or 2, it is characterised in that
The preceding surface of the first catadioptric mirror is compound curved surface, and for convex surface, reflector space is plane or concave surface or the convex surface different from the curved-surface shape of regional transmission to its regional transmission;Or
The rear surface of the second catadioptric mirror is compound curved surface, and for convex surface, regional transmission is plane or concave surface or the convex surface different from the curved-surface shape of reflector space to its reflector space.
4. camera lens as claimed in claim 3, it is characterised in that
The preceding surface of the first catadioptric mirror is compound curved surface, and its regional transmission is convex spherical, reflectance coating is coated with reflector space and is concave spherical surface or plane, and rear surface is concave spherical surface;The rear surface of the second catadioptric mirror is convex spherical, and reflectance coating is coated with reflector space.
5. camera lens as claimed in claim 4, it is characterised in that
First lens group is made up of seven lens, it is the first negative lens to be followed successively by diopter along the order of light path, diopter is the second positive lens, diopter is the 3rd negative lens, diopter is the 4th negative lens, diopter is the 5th negative lens, and diopter is the 6th positive lens, and diopter is the 7th negative lens;
The preceding surface and rear surface of the first lens are aspherical, and the preceding surface and rear surface of other lenses are sphere.
6. the camera lens as any one of claim 1 to 5, it is characterised in that with one or more in following feature:
First catadioptric mirror is glued together with the second catadioptric mirror;
The refractive index of the material of all eyeglasses in the panoramic optical camera lens is no more than 1.9;
At least one of first lens group lens can be moved along optical axis;
The refracting-reflecting lens group is supported on the installation frame of the first lens group by a transparent protective cover.
7. a kind of full-view image harvester, it is characterised in that including
Panoramic optical camera lens, it has the structure as described in any one of claim 1 to 6;With
First image collecting module, it includes
First sensor devices, for sensing the light assembled through the panoramic optical camera lens;With
Circumferential arrangement module, at least interacts for being powered to the first sensor devices and carrying out signal with it.
8. device as claimed in claim 7, it is characterised in that
The circumferential arrangement module is included with one or more in lower module:
Power module, it includes charging module and electricity storage module, and the electricity storage module is rechargeable battery or super capacitor;
System control module, the operation for controlling whole device;
Image processing module, the image of the round pie for sensor devices to be collected is transformed to the image of cylindrical shape;
Data memory module, for data storage;
Communication module, including wired or wireless communication module, the communication mode of the wire communication module is selected from ethernet communication, analog signal communication, adsl communication, usb communication, the communication mode of the wireless communication module is selected from WiFi communication, 3G/4G radio communications, Bluetooth communication, infrared communication, WiMax communications;
Lighting module, illumination is provided for the region for image collection.
9. device as claimed in claim 7 or 8, it is characterised in that also include
Second lens group, the front of the reflector space of the first catadioptric mirror is arranged at along the incident direction of original light, and it includes at least one lens;With
Second image collecting module, it includes the second sensor devices, for sensing the light assembled through the second lens group;
Second image collecting module has independent circumferential arrangement module, or shares part or all of circumferential arrangement module with the first image collecting module.
10. device as claimed in claim 9, it is characterised in that
Size of the angle of visual field of the second lens group not less than the blind area that the reflector space of the first catadioptric mirror is formed at the center of the angle of visual field of the first image collecting module.
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CN201510974528.3A CN106908936A (en) | 2015-12-22 | 2015-12-22 | A kind of panoramic optical camera lens and image acquisition device |
PCT/CN2016/111240 WO2017107910A1 (en) | 2015-12-22 | 2016-12-21 | Panoramic optical lens and image capturing device |
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CN201510974528.3A CN106908936A (en) | 2015-12-22 | 2015-12-22 | A kind of panoramic optical camera lens and image acquisition device |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107436485A (en) * | 2017-09-21 | 2017-12-05 | 浙江舜宇光学有限公司 | Optical imaging system |
CN109578825A (en) * | 2019-01-15 | 2019-04-05 | 华中光电技术研究所(中国船舶重工集团有限公司第七七研究所) | Compact panoramic exposure device |
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CN114967072A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Three-piece type near-infrared panoramic annular lens |
CN115437112A (en) * | 2022-08-23 | 2022-12-06 | 莆田学院 | Large-aperture panoramic optical imaging system |
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