CN204945480U - Large target surface continuous zooming optical system - Google Patents
Large target surface continuous zooming optical system Download PDFInfo
- Publication number
- CN204945480U CN204945480U CN201520591561.3U CN201520591561U CN204945480U CN 204945480 U CN204945480 U CN 204945480U CN 201520591561 U CN201520591561 U CN 201520591561U CN 204945480 U CN204945480 U CN 204945480U
- Authority
- CN
- China
- Prior art keywords
- lens
- group
- optical system
- zoom
- fixed
- 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
Links
Landscapes
- Lenses (AREA)
Abstract
The utility model relates to large target surface continuous zooming optical system, comprises that focal power is positive front fixing group, focal power is negative zoom group, focal power be negative compensating group and focal power is positive rear fixing group; The zoom of optical system is realized by the correspondingly motion of zoom group and compensating group.This continuous zooming optical system target surface is 1 inch, be applicable to pixel count is 1920 × 1080, Pixel size is 7.4 μm, target surface is 1 inch high definition CCD or cmos camera, be also applicable to pixel count is 1920 × 1080, Pixel size is 5.5 μm, target surface is 2/3 inch high definition CCD or cmos camera.And the focal length of this optical system is 35mm ~ 700mm, remote observation ability is correspondingly greatly improved, the airborne lidar for fluorescence of high-altitude flight can be applicable to, and more remote target can be detected, and then improve and scout, hit and the ability of distant object identification, its range of application is very broad.
Description
Technical field
The utility model relates to the visible light optical system of airborne opto-electronic device, is specifically related to large target surface continuous zooming optical system.
Background technology
The load-carrying of carrier aircraft and its voyage inversely, therefore, be applicable to airborne opto-electronic device visible light optical system requirements its there is little, the lightweight feature of volume; For high altitude surveillance, percussion system, require that optical system can be done large-scale target search and can do again target following among a small circle, identification.So optical system should have the feature that focal length is long, zoom ratio is large, resolution is high.Future, airborne opto-electronic device progressively will replace SD equipment in the past by high definition, the target surface of high definition CCD or cmos imaging device is more than 2/3 inch or 1 inch, but existing optical system target surface is little, focal length is short, high altitude surveillance optoelectronic device can not be met and should have high resolving power, requirement that operating distance is far away about optical system.Such as: application number is disclose a kind of airborne zoom lens in the Chinese patent application file of 201310723247.1, and the resolution of this camera lens adapts to the CCD of 1/3 inch, and design target surface is little, can not with full HD Camera Match; And the focal length of this camera lens is 10.5mm ~ 300mm, and whole focal length is shorter, limited to the spy of distant object, recognition capability, the airborne lidar for fluorescence of high-altitude flight can not be applicable to, so its application has very large restriction.
Utility model content
The purpose of this utility model is to provide a kind of large target surface continuous zooming optical system, and in order to solve, existing system target surface is little, resolution is low, the problem can not be able to not mated with high definition CCD or cmos camera.
For achieving the above object, scheme of the present utility model comprises a kind of large target surface continuous zooming optical system, comprises that focal power is positive front fixing group, focal power is negative zoom group, focal power be negative compensating group and focal power is positive rear fixing group, the zoom of optical system is realized by the relative motion of zoom group and compensating group, before described, fixing group is made up of four lens, zoom group is made up of three lens: the first Zoom lens, the second Zoom lens and the 3rd Zoom lens, compensating group is made up of two lens: the first offset lens and the second offset lens, and latter fixing group is made up of seven lens: fixed lens after first to the 7th, described second Zoom lens and the 3rd Zoom lens form the second balsaming lens group, described first offset lens and the second offset lens composition the 3rd balsaming lens group, light path between described compensating group and latter fixing group is provided with diaphragm, before before described in fixing group first, fixed lens is the negative lens of concave surface to diaphragm, before second, fixed lens is the positive lens of concave surface to diaphragm, before 3rd, fixed lens is the positive lens of concave surface to diaphragm, before 4th, fixed lens is the positive lens of concave surface to diaphragm, before described first, before fixed lens and second, fixed lens forms the first balsaming lens group, described first Zoom lens is double-concave negative lens, and the second Zoom lens is double-concave negative lens, and the 3rd Zoom lens is biconvex positive lens, described first offset lens is double-concave negative lens, and the second offset lens is the negative lens of concave surface to diaphragm, fixed lens is followed successively by convex surface to the positive lens of diaphragm, convex surface to the positive lens of diaphragm, biconvex positive lens, double-concave negative lens, convex surface to the positive lens of diaphragm, convex surface to the negative lens of diaphragm and concave surface to the positive lens of diaphragm after described first to the 7th, fixed lens composition the 4th balsaming lens group after fixed lens and the 5th after fixed lens, the 4th after the 3rd.
The technical indicator of described optical system is: optical system F#:5.6; Focal length: 35mm ~ 700mm; Target surface size is 1 inch, and when being applied to that pixel count is 1920 × 1080, Pixel size is 7.4 μm, target surface is CCD or CMOS of 1 inch, visual field is 26.56 ° ~ 1.35 °; When being applied to that pixel count is 1920 × 1080, Pixel size is 5.5 μm, target surface is CCD or CMOS of 2/3 inch, visual field is 19.64 ° ~ 0.99 °.
Before described, fixing airspace between group and zoom group is 10mm ~ 147.82mm, is spaced apart 6mm ~ 95.17mm between zoom group and compensating group, is spaced apart 3mm ~ 126.88mm between compensating group and latter fixing group.
Before described first balsaming lens group and the 3rd, the interval of fixed lens is 0.2mm, is spaced apart 0.2mm before the 3rd before fixed lens and the 4th between fixed lens; 10mm is spaced apart between first Zoom lens and the second balsaming lens group.
In four lens before described in fixing group, the optical material of lens is had at least to be H-FK61, H-FK71 or GaF2.
The material of four lens in group is fixed respectively: H-ZF52, H-FK61, H-FK61 and H-ZLaF75A before described, the material of three lens in described zoom group is respectively: H-ZLaF4LA, H-ZK9A and H-ZLaF75A, the material of two lens in described compensating group is respectively: H-ZK9A and H-ZLaF75A, the material of seven lens in described latter fixing group respectively: BaF2, H-ZLaF75A, H-FK61, H-ZLaF4LA, H-BaF8, H-ZLaF4LA and ZF13.
Also be provided with the first catoptron for light path of turning back and the second catoptron in described optical system, after injecting the 7th after the reflection of the emergent ray of fixed lens by the first catoptron after the 6th in fixed lens, the direction of propagation of light changes 90 degree; After 7th, the emergent ray of fixed lens is by penetrating after the reflection of the second catoptron, and the direction of propagation of light changes 90 degree again; By the effect of the first catoptron and the second catoptron, the angle after the 6th between the emergent ray of fixed lens and the light penetrated after the reflection of the second catoptron is 180 degree.
7.44mm is spaced apart after first after fixed lens and second between fixed lens, 0.15mm is spaced apart after second between fixed lens and the 4th balsaming lens group, 0.15mm is spaced apart after 4th balsaming lens group and the 6th between fixed lens, 15mm is spaced apart after 6th between fixed lens and the first catoptron, be spaced apart 45mm after first catoptron and the 7th between fixed lens, after the 7th between fixed lens and the second catoptron, be spaced apart 40mm.
The continuous zooming optical system provided of the present utility model, its target surface is 1 inch, be applicable to pixel count is 1920 × 1080, Pixel size is 7.4 μm, target surface is 1 inch high definition CCD or CMOS, be also applicable to Pixel size is 5.5 μm, target surface is 2/3 inch high definition CCD or CMOS.And the focal length of this optical system is 35mm ~ 700mm, the detection of distant object, recognition capability are correspondingly greatly improved, and then improve scout, the equipment that hits is to the identification of distant object, tracking power, can be applicable to the airborne lidar for fluorescence of high-altitude flight, its range of application is very broad.
Accompanying drawing explanation
Fig. 1 is the structural representation of large target surface continuous zooming optical system;
Fig. 2 is the structural representation of the optical system under short coke-like state;
Fig. 3 is the structural representation of the optical system under middle coke-like state;
Fig. 4 is the structural representation of the optical system under focal length state;
Fig. 5 is that optical system under short coke-like state is at spatial frequency 90lp/mm transport function figure;
Fig. 6 is that optical system under middle coke-like state is at spatial frequency 90lp/mm transport function figure;
Fig. 7 is that optical system under focal length state is at spatial frequency 90lp/mm transport function figure;
Fig. 8 is the optical system curvature of field, distortion figure under short coke-like state;
Fig. 9 is the optical system curvature of field, distortion figure under middle coke-like state;
Figure 10 is the optical system curvature of field, distortion figure under focal length state.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Large target surface continuous zooming optical system as shown in Figure 1, light incides in this optical system by object space, along light transmition direction, this optical system comprises that focal power is positive front fixing group of G1 successively, focal power is negative zoom group G2, focal power be negative compensating group G3 and focal power is rear fixing group of positive G4.Light path between compensating group G3 and rear fixing group of G4 is provided with diaphragm ST.
Front fixing group is made up of four lens, respectively: before first, fixed lens is the negative lens 11 of concave surface to diaphragm, before second, fixed lens is the positive lens 12 of concave surface to diaphragm, before 3rd, fixed lens is the positive lens 13 of concave surface to diaphragm, before 4th, fixed lens is the positive lens 14 of concave surface to diaphragm, wherein, negative lens 11 and positive lens 12 form the first balsaming lens group; Zoom group is made up of three lens, and respectively: the first Zoom lens is double-concave negative lens 21, the second Zoom lens is double-concave negative lens 22, and the 3rd Zoom lens is biconvex positive lens 23, and wherein, negative lens 22 and positive lens 23 form the second balsaming lens group; Compensating group is made up of two lens, and respectively: the first offset lens is double-concave negative lens 31, the second offset lens is the negative lens 32 of concave surface to diaphragm, and negative lens 31 and negative lens 32 form the 3rd balsaming lens group; Rear fixing group is made up of seven lens, respectively: fixed lens is followed successively by convex surface to the positive lens 41 of diaphragm, convex surface to the positive lens 42 of diaphragm, biconvex positive lens 43, double-concave negative lens 44, convex surface to the positive lens 45 of diaphragm, convex surface to the negative lens 46 of diaphragm and concave surface to the positive lens 47 of diaphragm after first to the 7th, wherein, positive lens 43, negative lens 44, positive lens 45 form the 4th balsaming lens group.
In the present embodiment:
The technical indicator that this optical system realizes is:
Wave band: visible light wave range; Target surface: 1 inch; F
#: 5.6; Focal length: f '=35mm ~ 700mm; Visual field: when being applied to that pixel count is 1920 × 1080, Pixel size is 7.4 μm, target surface is CCD or CMOS of 1 inch, visual field is 26.56 ° ~ 1.35 °; When being applied to that pixel count is 1920 × 1080, Pixel size is 5.5 μm, target surface is CCD or CMOS of 2/3 inch, visual field is 19.64 ° ~ 0.99 °.
Before airspace between fixing group G1 and zoom group G2 be 10mm ~ 147.82mm, be spaced apart 6mm ~ 95.17mm between zoom group G2 and compensating group G3, between compensating group G3 and rear fixing group of G4, be spaced apart 3mm ~ 126.88mm.
In front fixing group of G1, the interval of the first balsaming lens group and positive lens 13 is 0.2mm, is spaced apart 0.2mm between positive lens 13 and positive lens 14.
In zoom group G2, between negative lens 21 and the second balsaming lens group, be spaced apart 10mm.
Also be provided with catoptron 51 and catoptron 52 in this optical system, catoptron 51 is arranged between negative lens 46 and positive lens 47, and after injecting the 7th after the reflection by catoptron 51 of the light of negative lens 46 outgoing in fixed lens, the direction of propagation of light changes 90 degree; Be imaged onto in detector after the reflection by catoptron 52 of the emergent ray of positive lens 47, the direction of propagation of light changes 90 degree again; By the effect of catoptron 51 and catoptron 52, the angle between the emergent ray of negative lens 46 and the emergent ray after the reflection of catoptron 52 is 180 degree, and that is, both directions are just in time contrary.Arrange two catoptrons, can shorten system length, guarantee system also can realize corresponding function under shorter length, and, shorten length and also can ensure the convenience that system is installed.
In rear fixing group of G4, between positive lens 41 and positive lens 42, be spaced apart 7.44mm; 0.15mm is spaced apart between positive lens 42 and the 4th balsaming lens group; 0.15mm is spaced apart between 4th balsaming lens group and negative lens 46; 15mm is spaced apart between negative lens 46 and catoptron 51; 45mm is spaced apart between catoptron 51 and positive lens 47; 40mm is spaced apart between positive lens 47 and catoptron 52.
Before utilizing, fixing group corrects the various aberrations of focal length, adds positive lens 13 and positive lens 14 two dialyte lenses, utilize the size of airspace and the difference of radius to carry out focal length end aberration correction in first fixing group.And, in four lens in first fixing group, have at least lens to select the optical material of the Extra-low Dispersion such as H-FK61, H-FK71 or GaF2, for reducing the aberration such as second order spectrum of optical system focal length end.As specific embodiment, in the present embodiment, in this optical system, lensed all surface shape is sphere, does not have aspherical lens, and easy processing and manufacturing, cost is low.And the material that in system, lens are used is home made materials, be specially: the material of four lens in first fixing group respectively: H-ZF52, H-FK61, H-FK61 and H-ZLaF75A, the material of three lens in zoom group is respectively: H-ZLaF4LA, H-ZK9A and H-ZLaF75A, the material of two lens in compensating group is respectively: H-ZK9A and H-ZLaF75A, the material of seven lens in fixing group respectively: BaF2, H-ZLaF75A, H-FK61, H-ZLaF4LA, H-BaF8, H-ZLaF4LA and ZF13.
When keeping basic configuration and the range of movement of lens in existing structure, the surface curvature of each lens can have many groups to separate, such as: the front surface of lens 11 is 270.55, also be likely 270.65, just if 270.65 follow-up surface curvatures also have corresponding adjustment, so the surface curvature radius of each lens is not only have the value determined, table 1 gives the value of one group of concrete surface curvature.Table 1 gives one group of other design parameter of this optical system.
Table 1
Optical system is when carrying out focal length variations, zoom is realized by the relative movement of zoom group and compensating group, when system is changed to focal length by short Jiao, zoom group is moved together with fixing group backward with compensating group, relatively move by the different characteristics of motion movement compensating image planes again between two groups, reach and keep the effect that image planes are stable completely.When using this optical system, because target being observed distance can change, this will cause optical system out of focus, so need to focus to this optical system, take the mode of the lens in mobile front fixing group to realize the focusing of optical system, make image planes adjust to detector focal plane position.As Fig. 2, shown in 3 and 4, Fig. 2 is the optical system under short coke-like state, and Fig. 3 is the optical system under middle coke-like state, and Fig. 4 is the optical system under focal length state.
Fig. 5 is that optical system under short coke-like state is at spatial frequency 90lp/mm transport function figure; Fig. 6 is that optical system under middle coke-like state is at spatial frequency 90lp/mm transport function figure; Fig. 7 is that optical system under focal length state is at spatial frequency 90lp/mm transport function figure; Fig. 8 is the optical system curvature of field, distortion figure under short coke-like state; Fig. 9 is the optical system curvature of field, distortion figure under middle coke-like state; Figure 10 is the optical system curvature of field, distortion figure under focal length state.
In above-described embodiment, use catoptron is the length in order to shorten system, and catoptron only changes the direction of propagation of light, does not introduce aberration.Certainly, if for the length not requirement of system, this catoptron can not also be arranged.
In addition, the technical characteristic in the application documents be disclosed not having the content described in detail to belong in background technology in instructions or well known to a person skilled in the art prior art.
Be presented above concrete embodiment, but the utility model is not limited to described embodiment.Basic ideas of the present utility model are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present utility model, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out embodiment when not departing from principle of the present utility model and spirit, amendment, replacement and modification still fall in protection domain of the present utility model.
Claims (8)
1. a large target surface continuous zooming optical system, comprises that focal power is positive front fixing group, focal power is negative zoom group, focal power be negative compensating group and focal power is positive rear fixing group, the zoom of optical system is realized by the relative motion of zoom group and compensating group, before described, fixing group is made up of four lens, zoom group is made up of three lens: the first Zoom lens, the second Zoom lens and the 3rd Zoom lens, compensating group is made up of two lens: the first offset lens and the second offset lens, and latter fixing group is made up of seven lens: fixed lens after first to the 7th, described second Zoom lens and the 3rd Zoom lens form the second balsaming lens group, described first offset lens and the second offset lens composition the 3rd balsaming lens group, it is characterized in that, light path between described compensating group and latter fixing group is provided with diaphragm, before before described in fixing group first, fixed lens is the negative lens of concave surface to diaphragm, before second, fixed lens is the positive lens of concave surface to diaphragm, before 3rd, fixed lens is the positive lens of concave surface to diaphragm, before 4th, fixed lens is the positive lens of concave surface to diaphragm, before described first, before fixed lens and second, fixed lens forms the first balsaming lens group, described first Zoom lens is double-concave negative lens, and the second Zoom lens is double-concave negative lens, and the 3rd Zoom lens is biconvex positive lens, described first offset lens is double-concave negative lens, and the second offset lens is the negative lens of concave surface to diaphragm, fixed lens is followed successively by convex surface to the positive lens of diaphragm, convex surface to the positive lens of diaphragm, biconvex positive lens, double-concave negative lens, convex surface to the positive lens of diaphragm, convex surface to the negative lens of diaphragm and concave surface to the positive lens of diaphragm after described first to the 7th, fixed lens composition the 4th balsaming lens group after fixed lens and the 5th after fixed lens, the 4th after the 3rd.
2. large target surface continuous zooming optical system according to claim 1, is characterized in that, the technical indicator of described optical system is: optical system F#:5.6; Focal length: 35mm ~ 700mm; Target surface size is 1 inch, and when being applied to that pixel count is 1920 × 1080, Pixel size is 7.4 μm, target surface is CCD or CMOS of 1 inch, visual field is 26.56 ° ~ 1.35 °; When being applied to that pixel count is 1920 × 1080, Pixel size is 5.5 μm, target surface is CCD or CMOS of 2/3 inch, visual field is 19.64 ° ~ 0.99 °.
3. large target surface continuous zooming optical system according to claim 1, it is characterized in that, before described, fixing airspace between group and zoom group is 10mm ~ 147.82mm, be spaced apart 6mm ~ 95.17mm between zoom group and compensating group, between compensating group and latter fixing group, be spaced apart 3mm ~ 126.88mm.
4. large target surface continuous zooming optical system according to claim 3, is characterized in that, before described first balsaming lens group and the 3rd, the interval of fixed lens is 0.2mm, is spaced apart 0.2mm before the 3rd before fixed lens and the 4th between fixed lens; 10mm is spaced apart between first Zoom lens and the second balsaming lens group.
5. large target surface continuous zooming optical system according to claim 1, is characterized in that, in four lens before described in fixing group, has at least the optical material of lens to be H-FK61, H-FK71 or GaF2.
6. large target surface continuous zooming optical system according to claim 5, it is characterized in that, the material of four lens in group is fixed respectively: H-ZF52 before described, H-FK61, H-FK61 and H-ZLaF75A, the material of three lens in described zoom group is respectively: H-ZLaF4LA, H-ZK9A and H-ZLaF75A, the material of two lens in described compensating group is respectively: H-ZK9A and H-ZLaF75A, the material of seven lens in described latter fixing group is respectively: BaF2, H-ZLaF75A, H-FK61, H-ZLaF4LA, H-BaF8, H-ZLaF4LA and ZF13.
7. large target surface continuous zooming optical system according to claim 4, it is characterized in that, the first catoptron for light path of turning back and the second catoptron is also provided with in described optical system, after injecting the 7th after the reflection of the emergent ray of fixed lens by the first catoptron after 6th in fixed lens, the direction of propagation of light changes 90 degree; After 7th, the emergent ray of fixed lens is by penetrating after the reflection of the second catoptron, and the direction of propagation of light changes 90 degree again; By the effect of the first catoptron and the second catoptron, the angle after the 6th between the emergent ray of fixed lens and the light penetrated after the reflection of the second catoptron is 180 degree.
8. large target surface continuous zooming optical system according to claim 7, it is characterized in that, 7.44mm is spaced apart after first after fixed lens and second between fixed lens, 0.15mm is spaced apart after second between fixed lens and the 4th balsaming lens group, 0.15mm is spaced apart after 4th balsaming lens group and the 6th between fixed lens, 15mm is spaced apart after 6th between fixed lens and the first catoptron, be spaced apart 45mm after first catoptron and the 7th between fixed lens, after the 7th between fixed lens and the second catoptron, be spaced apart 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520591561.3U CN204945480U (en) | 2015-08-03 | 2015-08-03 | Large target surface continuous zooming optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520591561.3U CN204945480U (en) | 2015-08-03 | 2015-08-03 | Large target surface continuous zooming optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204945480U true CN204945480U (en) | 2016-01-06 |
Family
ID=55012891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520591561.3U Expired - Fee Related CN204945480U (en) | 2015-08-03 | 2015-08-03 | Large target surface continuous zooming optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204945480U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044891A (en) * | 2015-08-03 | 2015-11-11 | 凯迈（洛阳）测控有限公司 | Large target surface continuous zooming optical system |
| CN107229113A (en) * | 2016-03-25 | 2017-10-03 | 富士胶片株式会社 | Zoom lens and camera device |
| CN107255861A (en) * | 2017-08-10 | 2017-10-17 | 福建福光股份有限公司 | A kind of subminaturization, big multiple proportions, the airborne pick-up lens of high definition zoom |
-
2015
- 2015-08-03 CN CN201520591561.3U patent/CN204945480U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044891A (en) * | 2015-08-03 | 2015-11-11 | 凯迈（洛阳）测控有限公司 | Large target surface continuous zooming optical system |
| CN105044891B (en) * | 2015-08-03 | 2017-09-29 | 凯迈（洛阳）测控有限公司 | A kind of big target surface continuous zooming optical system |
| CN107229113A (en) * | 2016-03-25 | 2017-10-03 | 富士胶片株式会社 | Zoom lens and camera device |
| CN107229113B (en) * | 2016-03-25 | 2020-12-15 | 富士胶片株式会社 | Zoom lens and imaging device |
| CN107255861A (en) * | 2017-08-10 | 2017-10-17 | 福建福光股份有限公司 | A kind of subminaturization, big multiple proportions, the airborne pick-up lens of high definition zoom |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104199178B (en) | A kind of zoom lens | |
| CN105182507A (en) | Ultrahigh-definition large-image surface and wide-angle prime lens | |
| CN109683297A (en) | A kind of visible light-medium-wave infrared Shared aperture long-focal distance optical system | |
| CN105223699B (en) | A kind of visible light/infrared light two waveband optical system | |
| CN210090814U (en) | Long-focus medium-wave infrared refrigeration double-view-field lens | |
| CN103852874A (en) | Continuous zooming infrared lens with extra large zoom ratio | |
| CN105785555A (en) | An optical system with large image area, high magnification and high resolution | |
| CN204945480U (en) | Large target surface continuous zooming optical system | |
| CN203069876U (en) | Telephoto lens telescope multiplier for mobile phone | |
| CN106338816B (en) | A kind of ultra high-definition wide-angle zoom optic system | |
| CN102722017B (en) | Multi-waveband parfocal continuous focal length change optical device | |
| CN102879890B (en) | Varifocal optical system with long focus and large relative aperture | |
| CN109143554B (en) | Zoom lens | |
| CN104570288A (en) | Novel panoramic lens without blind area | |
| SE2351315A1 (en) | Fixed-focus lens | |
| CN203965714U (en) | A kind of long-focus long-wave infrared continuous zoom lens | |
| EP2916155B1 (en) | Variofocusing monitoring shot and monitoring device | |
| CN106773032A (en) | A kind of big visual field infrared optical system of zoom ratio three of ultrashort compact | |
| CN103676151B (en) | A kind of Near-infrared Double view field imaging system with high permeability | |
| CN112305732A (en) | Ultra-long focal length high-resolution continuous zooming medium-wave infrared optical system | |
| CN108873266B (en) | Wide-angle lens | |
| CN103744167A (en) | Temperature-adaptive dual-view field refrigerating infrared optical system | |
| CN105044891B (en) | A kind of big target surface continuous zooming optical system | |
| CN107255860B (en) | Inner focusing formula suitable for sealing device is without thermalization long-wave infrared continuous zoom lens | |
| CN205581387U (en) | 15mm~300mm visible light continuous zoom optical system |
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: 20160106 Termination date: 20190803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |