CN203691552U - Large field of view curved surface compound eye three-dimensional camera device - Google Patents
Large field of view curved surface compound eye three-dimensional camera device Download PDFInfo
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- CN203691552U CN203691552U CN201320851394.2U CN201320851394U CN203691552U CN 203691552 U CN203691552 U CN 203691552U CN 201320851394 U CN201320851394 U CN 201320851394U CN 203691552 U CN203691552 U CN 203691552U
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- image transmission
- transmission optical
- flexible polymer
- optical fibre
- compound eye
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Abstract
The utility model relates to a field of view curved surface compound eye three-dimensional camera device, comprising a CCD camera and a CCD image sensor arranged on the CCD camera, and also comprising a flexible polymer image transmitting fiber array, a tapered sleeve used for fixing the flexible polymer image transmitting fiber array and a hollow hemisphere housing. The field of view curved surface compound eye three-dimensional camera device of the utility model has the characteristics of large field of view, high resolution and high practicality.
Description
Technical field
The utility model belongs to optical field, relates to a kind of bionic compound eyes stereo vision apparatus, relates in particular to a kind of large visual field curved compound eye stereo photographic device.
Background technology
The vision system of nature biotechnology mainly contains two classes: a class is simple eye binocular vision system, produces stereoscopic vision by the parallax between binocular, is mainly present in it people and vertebrate; Another kind of is the compound eye vision system of insect, has large visual field, high time resolution and the high sensitivity to motion.
Comparatively speaking, the structure of simple eye binocular vision system is simpler than compound eye vision system, but also there are many deficiencies in simple eye binocular vision system accordingly, for example: be difficult to obtain large visual field and high-resolution simultaneously, the steric information of object is lost in two dimensional surface imaging meeting, can not bring into play to greatest extent the feature of optical system parallel processing, the ability that the target that does not possess similar biological vision automatically detects, judges and follows the tracks of, be subject to the factors such as diffraction limit to affect imaging system volume large etc.
In order to solve the technological deficiency existing in single aperture optical imaging system, people have studied the multiple aperture imaging system of bionic compound eyes, to reaching following target: the contradiction between high-resolution and large visual field is coordinated or solved in (1), sets up novel optical imagery mechanism; (2) give full play to the parallel processing feature of optical system, and according to features such as multiple aperture visual field are overlapping, utilize series images processing to realize moving target caught, detects, judges and locate tracking automatically; (3) realize the high-resolution stereo-picture of target object or scene is rebuild.
In recent years, Chinese scholars has dropped into a large amount of research work for multiple aperture bionic compound eyes imaging system, and technological achievement is also tentatively applied in fields such as moving-target monitoring, Infrared Targets range finding, stereoscopic camera, three-dimensional sight glass.Shanghai Communications University and Xi'an Communications University have made microlens array with flexible and thermoplastic material on curved surface, but because current imageing sensor is plane, microlens array and area image sensor on curved surface are coupled with difficulty.Northcentral University has made respectively PDMS(dimethyl silicone polymer) the dimpling lens mould of material, grid mould and peripheral parcel mould, and in the cavity of grid mould, insert the optical fiber of diameter 80 μ m, finally pressurization forms the microlens array of curved surface, relies on Optical Fiber Transmission picture signal on image sensor plane.This method has realized the coupling of array of spherical lenses and area image sensor, but fibre diameter is thicker, makes the resolution of image far below the resolution of imageing sensor itself.An international cooperating research team of the U.S. has made microlens array with flexible material, and make imageing sensor with photodiode on hemisphere face, in the research of bionic compound eyes, obtain the progress of great-leap-forward, but this research is at present also in development, technology is also immature, is difficult to practicality.
Utility model content
In order to solve existing technical problem in background technology, the utility model proposes a kind of large visual field curved compound eye stereo photographic device.The problems such as current bionic compound eyes visual field is little, resolution is low, poor practicability are effectively solved.
Technical solution of the present utility model is:
A kind of large visual field curved compound eye stereo photographic device, its special character is: comprise CCD camera and be arranged on the ccd image sensor on CCD camera, also comprise flexible polymer image transmission optical fibre array, conical sleeve and hollow hemisphere housing for fixing flexible polymer image transmission optical fibre array;
Above-mentioned hollow hemisphere housing is fixedly connected with by conical sleeve with ccd image sensor;
Above-mentioned flexible polymer image transmission optical fibre array is arranged on conical sleeve inside;
On above-mentioned hollow hemisphere housing, some through holes are set, on through hole, are provided with gradient-index lens;
Above-mentioned flexible polymer image transmission optical fibre array is made up of some flexible flexible polymer image transmission optical fibres;
Above-mentioned flexible polymer image transmission optical fibre one end is connected with gradient-index lens, and the other end is connected with ccd image sensor;
Above-mentioned flexible polymer image transmission optical fibre is made up of some polymer optical fibers;
Through hole outer shape on above-mentioned hollow hemisphere housing is circular, and inner side is shaped as square;
Above-mentioned conical sleeve one end is circular, and the other end is rectangle.
The beneficial effects of the utility model are:
1. visual field is large: due to the special role of the flexible polymer image transmission optical fibre in the utility model, can be being distributed in image transmitting that on sphere, each gradient-index lens becomes to imageing sensor, the gradient-index lens being positioned on sphere can cover 180 ° nearly, even larger market angular range, fully solves the little problem of the common parallel lens array angle of visual field.
2. resolution is high: the utility model utilizes polymeric material to become flexible image transmission optical fibre, according to design result, simple optical fiber diameter in image transmission optical fibre reaches 5 μ m, the theoretical resolution of institute's transmitting image is up to 100lp/mm, approach at present general CCD or the level of resolution of cmos image sensor, compare existing bionic compound eyes technology, there is higher image resolution ratio.
3. practicality is high: the designed sphere bionic compound eyes structure of the utility model is by the flexibility of polymer image transmission optical fibre, realize the smooth transmission to area image sensor surface of image that nonparallel gradient index lens array becomes, can make full use of existing CCD and cmos image sensor, greatly reduce the cost of bionic compound eyes technical research, be also conducive to promote further developing of bionic compound eyes technology.
Accompanying drawing explanation
Fig. 1 is the utility model structural profile schematic diagram;
Fig. 2 is the utility model polymer optical fiber drawing process schematic diagram;
Fig. 3 is the utility model hollow hemisphere shell structure schematic diagram;
Fig. 4 is the utility model conical sleeve structural representation;
Fig. 5 is the large visual field of the utility model curved compound eye imaging lens structural representation;
Wherein: 1-PS plug; 2-PMMA pipe; 3-is positioned at the electrothermal furnace on wire-drawer-tower; 4-polymer optical fiber; 5-hollow hemisphere housing; 6-conical sleeve; 7-gradient-index lens; 8-flexible polymer image transmission optical fibre; 9-CCD imageing sensor; 10-CCD camera.
Embodiment
Referring to Fig. 1-5, a kind of large visual field curved compound eye stereo photographic device, comprise CCD camera 10 and be arranged on the ccd image sensor 9 on CCD camera 10, also comprise flexible polymer image transmission optical fibre array, conical sleeve 6 and hollow hemisphere housing 5 for fixing flexible polymer image transmission optical fibre array; Hollow hemisphere housing 5 is fixedly connected with by conical sleeve 6 with ccd image sensor 9; Flexible polymer image transmission optical fibre array is arranged on conical sleeve 6 inside; Some through holes are set on hollow hemisphere housing 5, on through hole, are provided with gradient-index lens 7; Flexible polymer image transmission optical fibre array is made up of some flexible flexible polymer image transmission optical fibres 8; Flexible polymer image transmission optical fibre 8 one end are connected with gradient-index lens 7, and the other end is connected with ccd image sensor 9; Flexible polymer image transmission optical fibre 8 is made up of some polymer optical fibers 4; Through hole outer shape on hollow hemisphere housing 5 is circular, and inner side is shaped as square; Conical sleeve 6 one end are circular, and the other end is rectangle.
Large visual field curved compound eye stereo photographic device manufacture method is as follows:
(1) preparation of integrated form high-resolution polymer image transmission optical fibre:
Step 1: adopt rod-pipe legal system to make polymer optical fiber: to be 16mm(or other suitable dimension by diameter) PS(polystyrene, polystyrene) rod to be inserted in internal diameter be 16mm(or be other size of mating with PS rod outside diameter), external diameter be 20mm(or for guaranteeing that pipe thickness is other size of PS rod diameter 1/8) PMMA(Polymethylmethacrylate, polymethyl methacrylate) in pipe, insert internal diameter simultaneously and be 20mm(or other size for mating with PMMA pipe external diameter) circular die, in vacuum drying chamber, vacuumize and heat, vacuum degree is-0.09MPa, temperature is 160 ℃, be 3h heating time, then keep vacuum degree to naturally cool to room temperature, after taking-up, become preform, prefabricated rods adds hot-stretch and makes optical fiber on wire-drawer-tower, and wire-drawing temperature is 190 ℃, and fibre diameter is controlled at 0.5mm, and by optical fiber segment, length is 50cm.
Step 2: in the accurate square-shaped frame that is 70mm an endoporus length of side, be wound around stainless steel wire or other the high-intensity filament of upper string diameter as 0.1mm take parallel opposite side as supporting respectively, the filament being wound around on same group of opposite side be parallel to each other and with corresponding frame perpendicular, the spacing of adjacent fiber silk is 0.6mm.So just in square frame, form screen cloth, each mesh is square, and foursquare size just in time can penetrate the optical fiber that a diameter is 0.5mm.
Step 3: it is 70mm that screen cloth is shelved on to an outer length of side, in the square loop that the interior length of side is 60mm, penetrates all screen cloth square holes that are arranged in square loop the optical fiber preparing in step 1, through the about 20mm of length.Then take off square loop, clamp through the optical fiber of screen cloth and filled in the polytetrafluoroethylene square tube of Kong Bianwei 50mm with four blocks of accurate steel plates, epoxy resin adhesive is coated in end, and bonding one section of rope is as traction, take off after cured teflon tube, pull rope and bonding optical fiber end are filled in the interior polishing square-shaped metal pipe mold that the endoporus length of side is 50mm, and by pulling traction rope, all optical fiber is entered in mould by sieve screen apertures, to guarantee the proper alignment of optical fiber.Afterwards optical fiber is inserted together with mould to vacuum drying chamber, vacuumize heating, vacuum degree is-0.09MPa, and heating-up temperature is 160 ℃, and be 5h heating time, then keeps vacuum degree to naturally cool to room temperature, prepares image transmission optical fibre prefabricated rods.By the similar approach stretching image transmission optical fibre prefabricated rods described in step 1, obtaining the cross section length of side is the integrated form flexible polymer image transmission optical fibre of 0.5mm, and filament diameter is 5 μ m, and theoretical resolution is up to 100lp/mm, flexible use.
Step 4: by above-mentioned image transmission optical fibre segment, length is 50mm, and by wherein one end polishing, for subsequent use in step below.
(2) development of large visual field curved compound eye imaging lens
Step 1: be on 15mm, the external diameter metal hollow Loadings On Hemispherical Shell that is 21mm at an internal diameter, process central axis through the centre of sphere and etc. multiple stepped holes of angle, wherein outside Circularhole diameter is 0.8mm, the cross section length of side of inner side square hole is 0.5mm, the degree of depth in hole is 3mm, totally 127 holes.
Step 2: it is circular processing an one end, and the other end is rectangle, is highly the conical sleeve of 12mm, and wherein the outside diameter of round nose is 21mm, and interior Circularhole diameter is 19mm; The length of outer side of rectangular end is 9mm, and width is 5mm, and interior hole length is 8mm, and width is 4mm.
Step 3: in the stepped hole of hollow hemisphere housing, gradient index rod lens is installed, the diameter of lens is 0.8mm, and length is 3mm, and focal length is 1.5mm, and subject image at a distance is just in time positioned in lensed endface.Bonding with the sealing of rapid curing glue between lens and housing.
Step 4: aforesaid polymer image transmission optical fibre one end of polishing is installed in each stepped hole of Loadings On Hemispherical Shell (cross section, the hole length of side is 0.5mm), the surface of end face and gradient index rod lens is pressed close to, and then with rapid curing glue, image transmission optical fibre and spherical shell is sealed bonding firm.
Step 5: according to neat being fixed in the conical sleeve that step 2 processes of rectangular arranged mode, dock with Loadings On Hemispherical Shell circular one end of its middle sleeve the other end of image transmission optical fibre.Then in the gap of image transmission optical fibre, pouring into epoxy resin adhesive seals fixing.Finally the rectangular end of sleeve is carried out together with image transmission optical fibre array to grinding and polishing, obtain large visual field curved compound eye imaging lens.
(3) assembling of curved compound eye stereo photographic device
Selecting imageing sensor effective aspect ratio is 2:1; size is 1/2 CCD or cmos camera; remove the cover glass on image sensing unit surface; by the gluing image sensor surface of receiving of transparent photo-curing for the curved compound eye imaging len of preparing in abovementioned steps, composition curved compound eye stereo photographic device.Or the image that adopts coupling camera lens that curved compound eye camera lens is become is coupled into the imageing sensor inside of video camera.Curved compound eye stereo photographic device by take video or image signal transmission in computer, reconstruct stereo-picture by the image processing of computer.
Claims (3)
1. a large visual field curved compound eye stereo photographic device, it is characterized in that: comprise CCD camera and be arranged on the ccd image sensor on CCD camera, also comprise flexible polymer image transmission optical fibre array, conical sleeve and hollow hemisphere housing for fixing flexible polymer image transmission optical fibre array;
Described hollow hemisphere housing is fixedly connected with by conical sleeve with ccd image sensor;
Described flexible polymer image transmission optical fibre array is arranged on conical sleeve inside;
On described hollow hemisphere housing, some through holes are set, on through hole, are provided with gradient-index lens;
Described flexible polymer image transmission optical fibre array is made up of some flexible flexible polymer image transmission optical fibres;
Described flexible polymer image transmission optical fibre one end is connected with gradient-index lens, and the other end is connected with ccd image sensor;
Described flexible polymer image transmission optical fibre is made up of some polymer optical fibers.
2. large visual field according to claim 1 curved compound eye stereo photographic device, is characterized in that: the through hole outer shape on described hollow hemisphere housing is for circular, and inner side is shaped as square.
3. large visual field according to claim 1 and 2 curved compound eye stereo photographic device, is characterized in that: described conical sleeve one end is for circular, and the other end is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851394.2U CN203691552U (en) | 2013-12-20 | 2013-12-20 | Large field of view curved surface compound eye three-dimensional camera device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320851394.2U CN203691552U (en) | 2013-12-20 | 2013-12-20 | Large field of view curved surface compound eye three-dimensional camera device |
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| CN203691552U true CN203691552U (en) | 2014-07-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747231A (en) * | 2013-12-20 | 2014-04-23 | 中国科学院西安光学精密机械研究所 | Large-view field curved-surface compound-eye stereo camera device |
| CN110261940A (en) * | 2019-07-19 | 2019-09-20 | 上海理工大学 | A kind of preparation method of fly lens |
-
2013
- 2013-12-20 CN CN201320851394.2U patent/CN203691552U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747231A (en) * | 2013-12-20 | 2014-04-23 | 中国科学院西安光学精密机械研究所 | Large-view field curved-surface compound-eye stereo camera device |
| CN110261940A (en) * | 2019-07-19 | 2019-09-20 | 上海理工大学 | A kind of preparation method of fly lens |
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| 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: 20140702 Termination date: 20181220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |