CN101246302A - Wide-angle camera apparatus - Google Patents
Wide-angle camera apparatus Download PDFInfo
- Publication number
- CN101246302A CN101246302A CNA2007101621945A CN200710162194A CN101246302A CN 101246302 A CN101246302 A CN 101246302A CN A2007101621945 A CNA2007101621945 A CN A2007101621945A CN 200710162194 A CN200710162194 A CN 200710162194A CN 101246302 A CN101246302 A CN 101246302A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- angle
- lens
- image
- light
- 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.)
- Pending
Links
Images
Abstract
In the wide range photographing device for photographing the pan, the pan picture with the same picture quality and excellent effect at the two ends and the center is obtained. The wide range photographing device includes a central lens receiving the incident light from the front area 40 degree range of the photographed angle; a left and a right side lenses for receiving the incident light in the range of 40 degree left and right of the photographed angle; a left and a right isosceles right-angle prisms for refracting the incident light in the range of 40 degree left and right of the photographed angle to guide to be coherent with the side lenses; a diaphragm for limiting the quantity of the incident light to the central lens, wherein the diameter of the diaphragm is set smaller than that of the side lenses, which makes the brightness of the picture formed on the photo detector approximately the same.
Description
Technical field
The present invention relates to a kind of wide-angle camera apparatus.
Background technology
In the prior art, known a kind of camera head, it is in order to obtain panorama (panorama) image and the stereo-picture that field angle surpasses 120 °, have a plurality of image pickup optical systems that constitute by lens and CCD photo detector etc., obtain panoramic picture and stereo-picture after the image that utilizes these a plurality of image pickup optical systems to take is synthesized.
For example, known a kind of many formula cameras have: 4 photographic optical systems; CCD, it takes the shot object image by this photographic optical system imaging; Light filter, its transmissivity for 4 photographic optical systems has nothing in common with each other.These many formula cameras synthesize 4 pictures that photograph, thereby obtain the shot object image (for example, with reference to patent documentation 1) of high dynamic range.
In addition, known a kind of image-input device, it does not have difference for the size that makes the picture between a plurality of images that photographed by a plurality of image pickup parts and the state of focusing, have instrumentation apart from the distance of object (subject) apart from measuring device, based on by distance measuring device instrumentation to distance, individually adjust (for example, with reference to the patent documentations 2) such as focuses of a plurality of image pickup parts.
On the other hand, known a kind of compound eye imaging device, it has compound eye type optical system that is made of a plurality of optical units and the imaging apparatus (for example, with reference to patent documentation 3 and patent documentation 4) of taking a plurality of pictures that formed by a plurality of optical units.
In addition, known a kind of omnidirectional images trap setting (for example, with reference to patent documentation 5) that the prism that uses such as has at the rear that is used for confirming automobile.
Patent documentation 1:JP spy opens the 2002-281361 communique
Patent documentation 2:JP spy opens the 2001-148866 communique
Patent documentation 3:JP spy opens the 2005-167443 communique
Patent documentation 4:JP spy opens the 2002-171430 communique
Patent documentation 5:JP utility model is logined communique No. 3118678
Summary of the invention
Invent problem to be solved
Yet, there is such problem: thus to utilize an optical system to converge from the light photographing panorama picture in the angle that is taken of wide-angle above 120 °, the lens of super wide-angle that just need be as the fish-eye lens produce big cylindric distortion in the image that photographs.
Therefore, for use distort the little and field angle of aberration about 40 ° common lens and take the angular range that is taken about 120 ° by optical system seldom, the angular range of need considering to be taken is divided into these 3 zones of the positive zone of the 40 ° of angles roughly of respectively staggering and the zone about positive zone (below be called about zone), utilizes each optical system to converge from each regional light.
In order to constitute the angle that converges roughly 40 ° the optical system that respectively staggers, consider each optical system lens self towards the 40 ° of structures of installing that mutually respectively tilt, but aspect the whole camera head of miniaturization Design, be difficult to be provided with 40 ° the small lens of respectively tilting.As can be easily and the whole camera head of miniaturization ground design, and have the angle that converges 40 ° the structure of optical system that respectively staggers, consider as put down in writing in patent documentation 3 and the patent documentation 4 in compound eye imaging device, made up the structure of prism.
Specifically, consider such structure: the object side configuration at the optical lens array that compound eye imaging device had makes the prism that converges the light path bending, make from about the light in zone incide through this prism respectively in 2 lens in a plurality of lens of optical lens array, the light from positive zone is incided in the other lens without prism.
But, in the camera head of said structure, by incide through prism light in the compound eye imaging device formed about the zone image and by the image that incides the formed positive zone of light in the compound eye imaging device without prism, their brightness produces difference, therefore, must in the process of the digital processing that engages 3 images, implement brightness correction, be adjusted into the brightness of 3 images roughly the same.
Promptly, the light that incides in the prism causes light quantity to reduce because of the scattering of the reflection of the outer peripheral face of prism and prism inside, therefore, by incide through prism light in the compound eye imaging device formed about the image in zone than little by the brightness of image that incides the formed positive zone of light in the compound eye imaging device without prism, in order to engage 3 reconstructions of image is a series of panoramic picture, must implement the correction of the brightness of the image in zone about compensation.
Specifically, multiply by predefined correction constant (normally greater than 1 value) by brightness data and carry out the brightness correction in the digital processing process image, but owing to the deep or light degree of image with revise that constant is inversely proportional to be reduced, so for the image in zone about suitable bigger correction constant, its deep or light degree is significantly less than the image in positive zone, during therefore at 3 images of joint and as panoramic picture, the image quality in zone is more coarse than the image quality in positive zone about possible, thereby becomes the image of poor visual effect.
Therefore, the objective of the invention is to, a kind of such wide-angle camera apparatus is provided, promptly, at the wide-angle camera apparatus of panoramic picture that is used for making a video recording, need not to use wide-angle lens, thereby can be by the optical system constituent apparatus of trying one's best few, can access the panoramic picture of good visual effect, and device integral body do not increase and can realize slimming, wherein, good visual effect is meant, to by the formed respectively image after independently image has implemented to be used for to adjust the correction of brightness, do not produce the significant difference of deep or light degree, and the bonding part is unshowy from the light of the different angle incident that is taken.
The means that are used to deal with problems
In order to achieve the above object, a kind of wide-angle camera apparatus of the invention of claim 1 has: lens optical system, and it converges the light of incident in the angle that is taken of wide-angle in the angle that is taken of each regulation, thereby forms a plurality of pictures on the focal plane; Camera head, it is configured on the above-mentioned focal plane, and a plurality of pictures that are used for forming by the said lens optical system are transformed to the image information of electronics; Image-reproducing means, the image information of its a plurality of pictures after to above-mentioned camera head conversion is implemented brightness correction, and engage on this basis, thereby be reproduced as panoramic picture, above-mentioned wide-angle camera apparatus is characterised in that, the said lens optical system has: optical lens array, its in one plane be formed with center lens and about the side lens form, this center lens is used to accept the light of the positive regional incident in the above-mentioned angle that is taken, side lens configuration about this is in the left and right sides of this center lens, and its optical axis is parallel with the optical axis of this center lens, be used to accept in the above-mentioned angle that is taken about the light of regional incident; Prism, the light incident side that it is configured in the side lens about above-mentioned, be used to make in the above-mentioned angle that is taken about the light of regional incident reflect in the mode consistent and guide to above-mentioned each side lens with the optical axis of above-mentioned each side lens; Side light quantity restraint device, it is used to limit by above-mentioned prism guiding the light quantity through converging to above-mentioned camera head behind the lens of above-mentioned side; Center light quantity restraint device, it is used for limiting by a larger margin than above-mentioned side light quantity restraint device and is directly incident on the light quantity that converges to above-mentioned camera head after the above-mentioned center lens without above-mentioned prism, wherein, above-mentioned camera head has photodetector array, this photodetector array disposes in the mode that is parallel to above-mentioned optical lens array across predetermined distance from above-mentioned optical lens array, be used to take by above-mentioned center lens and about the picture that forms respectively of side lens, above-mentioned image-reproducing means respectively to above-mentioned photodetector array be transformed in the image in the positive zone in the above-mentioned angle that is taken of image information and the above-mentioned angle that is taken about the image in zone implement brightness correction, and syntheticly implemented each image of brightness correction and be reproduced as panoramic picture.
Above-mentioned side light quantity restraint device and above-mentioned center light quantity restraint device also can be respectively the diaphragms that disposes near above-mentioned side lens and above-mentioned center lens.
Above-mentioned side light quantity restraint device and above-mentioned center light quantity restraint device also can be respectively the lip-deep filter layers that is coated in above-mentioned side lens and above-mentioned center lens.
In above-mentioned optical lens array, above-mentioned center lens disposes in the mode of the light that can accept the 40 ° of scopes zone incidents in front in the above-mentioned angle that is taken, side lens about above-mentioned with can accept in the above-mentioned angle that is taken about the mode of light of each 40 ° of scopes zone incident dispose, above-mentioned prism is isosceles right-angle prism or 60 ° of-30 ° of right-angle prisms, above-mentioned image-reproducing means respectively to above-mentioned photodetector array be transformed in the image in the 40 ° of scope zones, front in the angle that is taken of image information and the above-mentioned angle that is taken about the image in 40 ° of scope zones implement brightness correction, and syntheticly implemented each image of brightness correction and be reproduced as field angle at the panoramic picture more than 120 °.
According to foregoing invention, owing to accept the light of the positive regional incident in the angle that is taken with center lens, and with about side lens accept in the angle that is taken about the light of regional incident, therefore, need not use wide-angle lens and can utilize few optical system of trying one's best to come constituent apparatus, and, owing to have side light quantity restraint device and center light quantity restraint device, therefore can with in the process of digital processing, be used to adjust positive zone image and about the value of correction constant of brightness of image in zone be set at and do not have the very value of big-difference, thereby can access implemented after the brightness correction positive zone and about do not produce the significant difference of deep or light degree between the image in zone, and the panoramic picture of the inconspicuous good visual effect in bonding part, wherein, this side light quantity restraint device is used to limit through prism and the light quantity that converges to photo detector, and this center light quantity restraint device is used for limiting by a larger margin directly to center lens incident and the light quantity that converges to photo detector 3 than side light quantity restraint device.
Description of drawings
Fig. 1 is the stereographic map of the schematic configuration of the wide-angle camera apparatus that relates to of expression first embodiment of the present invention.
Fig. 2 is the lens optical system of expression in this wide-angle camera apparatus and the side view of the travel path of light.
Fig. 3 is the side cut away view of the structure of the lens optical system in this wide-angle camera apparatus of expression.
Fig. 4 is this wide-angle camera apparatus of expression and the stereographic map of the relation of the whole 120 ° interior subject of angular range that is taken.
Fig. 5 is that expression will utilize the formed picture of lens optical system in this wide-angle camera apparatus to be reproduced as the figure of the process of panoramic picture.
Fig. 6 A is the figure of example of the correction constant C (x, y1) in the brightness correction of this wide-angle camera apparatus of expression, and Fig. 6 B is expression and the figure of the example of the corresponding image of coordinate of revising constant.
Fig. 7 is the side view of the travel path of lens optical system in the wide-angle camera apparatus that relates to of expression second embodiment of the present invention and light.
Fig. 8 is the side view of the travel path of the lens optical system of the wide-angle camera apparatus that relates to of expression the 3rd embodiment of the present invention and light.
Fig. 9 is the side view of the travel path of the lens optical system of the wide-angle camera apparatus that relates to of expression the 4th embodiment of the present invention and light.
Figure 10 is the vertical view of the lens optical system of this wide-angle camera apparatus of expression.
Figure 11 is the vertical view of the lens optical system in the wide-angle camera apparatus that relates to of expression the 5th embodiment of the present invention.
Figure 12 is this wide-angle camera apparatus of expression and the stereographic map of the relation of hemispheric subject roughly.
Figure 13 is the stereographic map of the schematic configuration of the wide-angle camera apparatus that relates to of expression the 6th embodiment of the present invention.
Embodiment
(first embodiment)
Below, referring to figs. 1 through Fig. 6, describe for first embodiment of the present invention.As depicted in figs. 1 and 2, the wide-angle camera apparatus 1 of present embodiment has: lens optical system 2, and the light that it converges incident in 120 ° the angle that is taken makes on its focal plane that is imaged on regulation; Photodetector array (camera head) 3, it is configured on the focal plane of lens optical system 2, will utilize the picture of lens optical system 2 imagings to be transformed to electronic image information; DSP (Digital Signal Processor: digital signal processor) 5, it obtains by the image information after photodetector array 3 conversion by AD transducer 4, and with it as digital signal; Microprocessor (image-reproducing means) 6, its image information that DSP5 is obtained is implemented Flame Image Process such as distortion removal and brightness correction, and it is reproduced as panoramic picture; Display device such as liquid crystal panel 7, it shows the image that is reproduced by microprocessor 6.
The lens optical system 2 of present embodiment has as shown in figures 1 and 3: optical lens array 11, and it has formed 9 optical lenses 8 of 3 row, 3 row that optical axis L is parallel to each other on a plane of 1 transparency carrier 9; The carriage 12 of optical lens array 11; Be formed on diaphragm 13l, 13c, the 13r of the upper surface of carriage 12; Masking frame 14, itself so that the mode of the light mutually noninterfere of penetrating from each optical lens 8 cut apart; Optical filter 15, it is configured in the top of photodetector array 3; Isosceles right-angle prism 16l, 16r, it is at the light incident side of optical lens array 11, respectively with about relative configuration of optical lens 8l, 8r of row.9 optical lenses 8 all have 40 ° field angle.
The cross section of isosceles right-angle prism 16l, 16r is an isosceles right triangle, as shown in Figure 2, and with respect to optical lens array 11 and tilted configuration.At being described in detail after concrete being configured to.
3 optical lenses of the central array of optical lens array 11 (below be called center lens) 8c directly accepts the front light of 40 ° of scope zone incidents roughly in the angle that is taken, about each 3 optical lens of row (below be called the side lens) 8l, 8r by isosceles right-angle prism 16l, 16r accept in the angle that is taken about the light of 40 ° of scope zone incidents roughly separately.
Configuration isosceles right-angle prism 16l, 16r make light from 2 limit 16la, the 16lb at folder right angle, laterally a limit 16la, the 16ra incident 16ra, the 16rb, and the light of incident is penetrated from another limit 16lb, 16rb by hypotenuse 16lc, 16rc reflection back.In addition, in this manual, for convenience with the outboard profile (Fig. 2) of the face of the light incident of prism and the face of light outgoing etc. and the travel path of expression light to as directed, used terms such as " limit ", " hypotenuse ".
Specifically, isosceles right-angle prism 16l, 16r are as shown in Figure 2, limit 16lb, a 16rb that will be relative with side lens 8l, 8r is configured to respect to the optical lens array 11 25 ° of angles that tilt, and hypotenuse 16lc, 16rc are configured to respect to tilt 70 ° angle of optical lens array 11.Constitute thus,, do not block light to center lens 8c incident in roughly 40 ° the scope of frontal, not having isosceles right-angle prism 16l, 16r from center lens 8c.
Utilize side lens 8l, 8r to converge the roughly light of the scope of 40 ° of angles in the light of 2 limit 16la, 16lb from the folder right angle of isosceles right-angle prism 16l, 16r, the limit 16la toward the outer side 16ra, the 16rb, 16ra incident, and make imaging on photodetector array 3.
Form the diaphragm 13c (center light quantity restraint device) of center lens 8c then, and make the diameter of this diaphragm 13c littler than the diameter of diaphragm 13l, the 13r (side light quantity restraint device) of side lens 8l, 8r, thereby limit the light quantity (with reference to Fig. 3) that arrives photodetector array 3 biglyyer, wherein, above-mentioned diaphragm 13c is used to make the light from subject not blocked by isosceles right-angle prism 16l, 16r and directly incident, and above-mentioned diaphragm 13l, 13r are used to make the light from subject to pass through isosceles right-angle prism 16l, 16r incident.
Specifically, set the diameter of each diaphragm 13c, 13l, 13r, make penetrate and arrive photodetector array 3 from center lens 8c and side lens 8l, 8r light quantity about equally.
Then, describe at photodetector array 3.Photodetector array 3 is solid-state imagers, it is parallel to optical lens array 11, and be configured on the focal plane of each optical lens 8 of optical lens array 11, (Complementary Metal OxideSemiconductor: complementary metal oxide semiconductor (CMOS)) imageing sensor constitutes by being formed on CMOS on the substrate.Solid-state imager also can be CCD (Charge Coupled Device: charge-coupled image sensor).
Utilize the optical lens 8 of 3 row, 3 row, the independent image of imaging 3 row 3 row on photodetector array 3.With reference to Fig. 4, at length describe at the independent image 17 that forms on the photodetector array 3.Hypothesis in the place ahead of wide-angle camera apparatus 1, in the whole 120 ° angle that is taken, is expressed as the subject B of " L ", " C ", " R " as shown in Figure 4 every one of 40 ° uniformly-spaced configuration now.Under this situation, " C " (central authorities 40 ° of scope zones) of central authorities by center lens 8c up and down and about upset, the independent image 17 that is imaged as 3 that lists in the central authorities of photodetector array 3.
In addition, after being overturn about isosceles right-angle prism 16l, 16r in " R " (40 ° of scope zones, right side) on " L " on the left side (40 ° of scope zones, left side) and the right, respectively by side lens 8r, 8l up and down and about upset, about photodetector array 3, respectively be imaged as 3 independent image 17 in the row.
After these 9 independent image 17 are transformed to image information by photodetector array 3, microprocessor 6 is read these image informations successively, with the image correction of having overturn up and down as mentioned above for correctly towards, the image " C " that engages positive zone and about enforcement brightness correction in the image " L " " R " in zone.
Then, with reference to Fig. 5 and Fig. 6 A, Fig. 6 B, illustrate that the panoramic picture P that utilizes 6 pairs of image informations of microprocessor reproduces the brightness correction with image.In addition, the picture that graphical representation among Fig. 5 is seen from subject B side in Fig. 4, the picture expression in the left side of Fig. 5 is imaged on the state on the photodetector array 3, and the graphical representation microprocessor 6 on the central authorities of Fig. 5 and right side obtains the status of processes that handle the back in microprocessor 6.
The image information of being read successively by microprocessor 6 is according to the order of reading from photodetector array 3, shown in the central authorities of Fig. 5, about row become opposite location, and about the image 17 self of row about overturn.In the position that utilizes the picture 17 of row about microprocessor 6 exchanges, make about image self and overturn, shown in the right side of Fig. 5, this image information is reproduced as the panoramic picture P of 120 ° field angle then.
Specifically, microprocessor 6 carries out Flame Image Process at the image information of 3 independent image of center row (part of representing with thick frame 18 in the central authorities of Fig. 5).Microprocessor 6 at first with about " L " (images in 40 ° of scope zones, left side) after the upset and independent image 17 mirror face turnings of " R " (images in 40 ° of scope zones, right side) and turn back to normal image, this image " C " that has turned back to normal image " L " and 40 ° of scope zones of " R " and central authorities is synthetic, thus be reproduced as 120 ° panoramic picture P.
In addition, microprocessor 6 is implemented brightness correction in the following order engaging with the position with when turning back to normal image " L " " C " " R " as mentioned above.
Shown in Fig. 6 B, the correction constant C in the present embodiment (x, y) to vertical distribution y coordinate, is set the constant of monodrome to the transverse distribution x coordinate of image to the planimetric position (x, y) that should revise in the image.The image of representing among Fig. 6 B is equivalent to the image on the right side of Fig. 5.
The correction constant C (x, y1) of (middle position longitudinally in the image of Fig. 6 B) when at this moment, Fig. 6 A represents that the y coordinate is y1.
Promptly, shown in Fig. 6 A, Fig. 6 B, the correction constant that medium line part (y=y1) application curves Cl of the image " L " in left side zone is represented, the correction constant that medium line part (y=y1) application curves Cc of the image " C " in positive zone is represented, the correction constant that medium line part (y=y1) application curves Cr of the image " R " in right zone is represented, thus the brightness data of the pixel in each image be multiply by the correction constant respectively.
For example, the pixel p1 of the left end of the medium line of image " L " part (y=y1) used revise constant=2, revise brightness to 2 times; Pixel p2 to central authorities uses correction constant=1, still keeps this brightness; The pixel p3 of the left end of the medium line of image " C " part (y=y1) used revise constant=1.5, revise brightness to 1.5 times; Pixel p4 to middle position uses correction constant=1, still keeps this brightness.
In addition, the correction constant of each image " L " " C " " R " is all drawn the curve of downward quafric curve shape, each image " L " " C " " R " all forms by the effect of converging of optical lens 8.That is,, therefore use bigger correction constant because the peripheral part brightness ratio middle body of each image is not enough to some extent.
As mentioned above, microprocessor 6 is when implementing brightness correction to each image " L " " C " " R ", for the whole pixels in each image, in its brightness data, multiply by with pixel location (x, y) and revise constant C (x, y) accordingly and, generate revised image as digital value.
Then, in the wide-angle camera apparatus 1 of present embodiment, form the diaphragm 13c of center lens 8c, and the diameter that makes this diaphragm 13c is than side lens 8l, the diaphragm 13l of 8r, the diameter of 13r is little, thereby limit the light quantity that arrives photodetector array 3 biglyyer, wherein, above-mentioned diaphragm 13c is used to make from the direct incident of the light of subject B, above-mentioned diaphragm 13l, 13r is used to make the light from subject B to pass through isosceles right-angle prism 16l, 16r incident, therefore, formed on the photodetector array 3 the positive zone that forms and about the image 17 in zone self do not have the image of very big luminance difference, thereby for the correction constant (curve C c) of the image " C " in positive zone and for about correction constant (the curve C l of image " L " " R " in zone, Cr) not than big difference.
At this, for relatively, the correction constant C t (x, y1) of (below be called comparative example) when in Fig. 6 A, representing that with curve C lt, Crt (double dot dash line) diaphragm 13l, the 13r of the diaphragm 13c of center lens 8c and side lens 8l, 8r are same diameter.Under the situation of comparative example, since about the brightness of image " L " " R " in zone descend to some extent with respect to the image " C " in positive zone, therefore, descend in order to revise this brightness, about the correction constant (curve C lt, Crt) of image " L " " R " usefulness in zone just become than the big value of the correction constant in the present embodiment (curve C l, Cr).
Specifically, become from 1.5 to 3 value for the correction constant C t (x, y1) in the comparative example of image " L " " R ".(for example, for the correction constant ≈ 3 of the pixel p1 in the image " L ", for the correction constant ≈ 1.5 of pixel p2)
At this,, therefore, be that the tone number of the pixel p1 periphery of the image in the comparative example " L " just is reduced to 256/3 ≈ about 85 under 256 the situation in deep or light degree owing to give in the display device 7 the tone number that shows according to deep or light degree/correction constant value.
To this, the tone number of expression is to revise the value of the size of constant at the scope of each image " L " " C " " R " from 1 to 2 in the display device 7 in the wide-angle camera apparatus 1 of present embodiment, therefore obtains about from 256 to 128.Thereby the image quality that prevents to become two side areas in engaging the panoramic picture P that reproduces each image " L " " C " " R " back descends significantly and causes the panoramic picture P of poor visual effect.
In addition, because each image " L " " C " " R " is the image in the zone of 40 ° of scopes roughly, therefore engages 3 width of cloth images and can produce the lap at junction surface hardly.In addition, because center lens 8c and side lens 8l, 8r are the lens of 40 ° of field angle, therefore different with so-called wide-angle lens, the distortion that produces the outer peripheral portion of each image hardly, when not needing image to engage each other for the distortion correcting process of the complexity of each image.
(second embodiment)
Below, describe at second embodiment with reference to Fig. 7.The wide-angle camera apparatus 1 of second embodiment is the structure roughly the same with first embodiment, omits explanation at identical structure division mark same reference numerals.
The different piece of second embodiment and first embodiment is, replaces isosceles right-angle prism 16l, 16r, and disposes the prism that 60 ° of-30 ° of right-angle prism 26l, 26r are used as being configured in the light incident side of optical lens array 11.As shown in Figure 7,60 ° of-30 ° of right-angle prism 26l, 26r are that a kind of cross section is right-angle triangle and becomes the prism of 60 ° and 30 ° with opposed 2 dihedrals in right angle.
60 ° of-30 ° of right-angle prism 26l, 26r are configured, make 2 limit 26la, the 26lb at folder right angle, minor face 26lb, the 26rb among 26ra, the 26rb be parallel to optical lens array 11, make long limit 26la, the 26ra at folder right angle vertical laterally.Thereby hypotenuse 26lc, 26rc have 60 ° inclination with respect to optical lens array 11.
Then, from long limit 26la, the 26ra incident of the light in 40 ° of scope zones about in 120 ° of the angles of being taken from 60 ° of-30 ° of right-angle prism 26l, 26r, reflected by hypotenuse 26lc, 26rc, penetrate the back from minor face 26lb, 26rb and converged, the image in 40 ° of scope zones roughly about being imaged as on the photodetector array 3 by side lens 8l, 8r.
In this second embodiment, also form the diaphragm 13c of center lens 8c with the diameter littler than the diameter of diaphragm 13l, the 13r of side lens 8l, 8r, the brightness that is formed on each picture on the photodetector array 3 is roughly equal, thereby can make implemented after the brightness correction positive zone and about do not have the significant difference of deep or light degree between the image in zone, obtain the showy and panoramic picture P of good visual effect in bonding part.
(the 3rd embodiment)
Below, with reference to Fig. 8, describe at the 3rd embodiment of panoramic picture that can take roughly 180 ° field angle.The wide-angle camera apparatus 1 of the 3rd embodiment is the structure roughly the same with first embodiment, omits explanation at identical structure division mark same reference numerals.
The 3rd embodiment part different with first embodiment is, in order to widen the field angle that to make a video recording, constitute each optical lens 8l, 8c, 8r with lens with field angle of 60 °, and the replacement isosceles right-angle prism, and configuration equilateral triangle prism 36l, 36r are as the prism of the light incident side of optical lens array 11.Equilateral triangle prism 36l, 36r are that the cross section is the prism of equilateral triangle as shown in Figure 8.
Configuration equilateral triangle prism 36l, 36r make limit 36lb, a 36rb be parallel to optical lens array 11.Thereby, have 60 ° inclination with respect to optical lens array 11 towards hypotenuse 36lc, the 36rc of inboard.Then, from hypotenuse 36la laterally, the 36ra incident of the light in 60 ° of scope zones about in 180 ° of the angles of being taken from equilateral triangle prism 36l, 36r, by hypotenuse 36lc, 36rc reflection towards the inboard, penetrate the back from limit 36lb, the 36rb that is parallel to optical lens array 11 and converged, the image in 60 ° of scope zones roughly about being imaged as on the photodetector array 3 by side lens 8l, 8r.
In the 3rd embodiment, also form the diaphragm 13c of center lens 8c with the diameter littler than the diameter of diaphragm 13l, the 13r of side lens 8l, 8r, the brightness that is formed on each picture on the photodetector array 3 is roughly equal, thereby can make implemented after the brightness correction positive zone and about do not have the significant difference of deep or light degree between the image in zone, obtain the showy and panoramic picture P of good visual effect in bonding part.
(the 4th embodiment)
Below, with reference to Fig. 9 and Figure 10,180 ° the 4th embodiment of panoramic picture of field angle describes at making a video recording roughly.The wide-angle camera apparatus 1 of the 4th embodiment is the structure roughly the same with first embodiment, omits explanation at identical structure division mark same reference numerals.
The 4th embodiment part different with first embodiment is, in order to widen the field angle that to make a video recording, constitute each optical lens 8l, 8c, 8r with lens with field angle of 60 °, and the replacement isosceles right-angle prism disposes the prism of a big equilateral triangle prism 46 as the light incident side of optical lens array 11.The size on 1 limit of equilateral triangle prism 46 constitutes optical lens 8l, the 8c of 3 of 1 row of striding optical lens array 11, the total length of 8r.
On the other hand, converged by the center lens 8cd of the descending central authorities of optical lens array 11 (Figure 10), on photodetector array 3, be imaged as the roughly image in 60 ° of scope zones of central authorities from light towards roughly 60 ° of scope zones in front.
Then, with first embodiment similarly, utilize microprocessor 6 with about roughly the image in 60 ° of scope zones and central authorities roughly the reconstruction of image in 60 ° of scope zones be the panoramic picture P of 180 ° of field angle roughly.In addition, under the situation of the 4th embodiment,, therefore simplified the process of the reproduction processes of utilizing microprocessor 6 of this part owing to the independent image of row about not needing to exchange.
In the 4th embodiment, form the diaphragm 13c of center lens 8cd of the descending central authorities of optical lens array 11 with the diameter littler than the diameter of diaphragm 13l, the 13r of side lens 8l, 8r, the brightness that is formed on each picture on the photodetector array 3 is roughly equal, thereby can make implemented after the brightness correction positive zone and about do not have the significant difference of deep or light degree between the image in zone, obtain the showy and panoramic picture P of good visual effect in bonding part.
(the 5th embodiment)
Below, with reference to Figure 11 and Figure 12, it seems that at taking the 5th embodiment of roughly hemispheric panoramic picture in the place ahead describes from wide-angle camera apparatus 1.The wide-angle camera apparatus 1 of the 5th embodiment and the panoramic shooting device 1 of first embodiment similarly possess: optical lens array 11, and it has 9 optical lenses 8 of 3 row, 3 row; Photodetector array 3, it is configured on the position of optical lens array 11 predetermined distances.Omit explanation at the structure division mark same reference numerals identical with first embodiment.
The 5th embodiment part different with first embodiment is, though prism is arranged on the light incident side of optical lens array 11, but with this prism be configured to 3 row 3 row in except the optical lens 8ce of central authorities remaining 8 optical lens 8f all relative, thereby can converge from the light of whole directions of hemisphere roughly.
Specifically, as shown in figure 11, with 3 row 3 row in except the optical lens 8ce of central authorities remaining 8 positions that optical lens 8f is relative, be that the center is by radial configuration isosceles right-angle prism 56 with the optical lens 8ce of central authorities.Isosceles right-angle prism 56 similarly disposes with respect to the inclination attitude and first embodiment of optical lens array 11, make with optical lens array 11 opposed limits with respect to the optical lens array 11 25 ° of angles that tilt, hypotenuse is with respect to the optical lens array 11 70 ° of angles that tilt.Like this, in roughly 40 ° the scope of frontal, there is not isosceles right-angle prism 56, do not blocked and to the optical lens 8ce of central authorities incident by prism 56 from the light of subject from the optical lens 8ce of central authorities.
In addition, in the 5th embodiment, only 1 optical lens 8ce of the central authorities of 3 row, 3 row is center lens, and remaining 8 optical lens 8f are equivalent to the side lens.
On photodetector array 3, utilize center lens 8ce imaging front roughly the image in 40 ° of scope zones as independent image, utilize 8 side lens 8f respectively imaging roughly hemisphere perimeter sides roughly the image of 40 ° of scope area B 1～B8 (Figure 12) as independent image.Then, utilize microprocessor 6, these 9 images (independent image) are reproduced as roughly hemispheric panoramic picture.In addition, each area B 1～B8 as shown in figure 12, field angle is 40 ° longitudinally, horizontal field angle is 45 °.
In the 5th embodiment, form the diaphragm 13c of 1 optical lens 8ce of central authorities with the little diameter of diameter of diaphragm than the optical lens 8f of 8 of residues, the brightness that is formed on each picture on the photodetector array 3 is roughly equal, thereby can make implemented after the brightness correction positive zone and about do not have the significant difference of deep or light degree between the image in zone, obtain the showy and panoramic picture P of good visual effect in bonding part.
(the 6th embodiment)
Below, describe at the 6th embodiment with reference to Figure 13, in the 6th embodiment, to be divided into roughly 5 zones of each 36 ° of scope from the light in 180 ° the angle that is taken, utilize the light path that converges separately that 5 zones are converged respectively, on photodetector array 3, be imaged as 5 independent image then.The wide-angle camera apparatus 1 of the 6th embodiment is the structure roughly the same with the wide-angle camera apparatus 1 of first embodiment, but respectively has 2 respectively about the prism of the light incident side setting of optical lens array 11.
In the wide-angle camera apparatus 1 of the 6th embodiment: configuration isosceles right-angle prism 66lu, 66ru make them mutually opposed with up side lens 8l, the 8r of optical lens array 11, and tilt 26 ° with respect to optical lens array 11 respectively; Configuration isosceles right-angle prism 66ld, 66rd make them opposed with descending side lens 8l, 8r, and respectively with respect to 10 ° of optical lens array 11 inclinations.
Converged by the center lens 8c of the center row of optical lens array 11 from the light in roughly 36 ° the angle that is taken in positive zone, after inciding isosceles right-angle prism 66lu, 66ru from the light in adjacent with the left and right sides in positive zone roughly 36 ° the angle that is taken, up side lens 8l, 8r by optical lens array 11 converge, after inciding isosceles right-angle prism 66ld, 66rd, converged by descending side lens 8l, the 8r of optical lens array 11 near the light in outermost roughly 36 ° the angle that is taken.
In the 6th embodiment, with than with the little diameter of diameter of the diaphragm of isosceles right-angle prism 66lu, 66ru, 66ld, 66rd opposed 4 side lens 8l, 8r, form the diaphragm 13c of center lens 8c of the center row of optical lens array 11, the brightness that is formed on each picture on the photodetector array 3 is roughly equal, thereby can make in the significant difference of having implemented not have between each image after the brightness correction deep or light degree, obtain the unshowy and panoramic picture P of good visual effect in bonding part.
In addition, be disposed at the up isosceles right-angle prism 66lu of optical lens array 11,66ru and be disposed at descending isosceles right-angle prism 66ld, among the 66rd, because angle of inclination difference (26 ° and 10 °) with respect to optical lens array 11, so minimizing degree difference of the light quantity that the reflection of prism surface etc. is caused, therefore, for the brightness that makes on photodetector array 3 each independent image that forms roughly the same, preferentially make 2 side lens 8l, the diameter of the diaphragm of 8r and 2 side lens 8l, the diameter difference of the diaphragm of 8r, wherein, this side lens 8l, 8r and isosceles right-angle prism 66lu, 66ru is mutually opposed, this side lens 8l, 8r and isosceles right-angle prism 66ld, 66rd is mutually opposed.
In first to the 6th embodiment of above explanation, penetrate light quantity that the back arrives photodetector arrays 3 about equally in order to make from each optical lens 8, set the opening diameter of the diaphragm 13c (center light quantity restraint device) of center lens 8c littler, constitute as follows but also can replace than the opening diameter of diaphragm 13l, the 13r (side light quantity restraint device) of side lens 8l, 8r.
Promptly, the different filter layer of coating light transmission on the surface of center lens 8c and side lens 8l, 8r, setting is coated in the light transmission of the filter layer on the center lens 8c less than the light transmission that is coated in the filter layer on side lens 8l, the 8r, make for each optical lens 8, the light quantity on the arrival photodetector array 3 about equally.
In addition, also can the optical filter 15 of the top of photodetector array 3 will be configured in, the each several part of being cut apart according to masking frame 14 constitutes the different light filter of light transmission, the light transmission of the part of the light institute transmission that the light transmission of the part of the light institute transmission that setting is penetrated from center lens 8c penetrates less than lens 8l, 8r from the side, make for each optical lens 8, the light quantity on the arrival photodetector array 3 about equally.
As mentioned above, according to wide-angle camera apparatus 1 of the present invention, because light with the center lens 8c acceptance positive regional incident in the angle that is taken, and with about side lens 8l, 8r accept in the angle that is taken about the light of regional incident, therefore, need not use wide-angle lens and can utilize few optical system of trying one's best to come constituent apparatus, and, owing to have side light quantity restraint device 13l, 13r and center light quantity restraint device 13c, therefore can with in the process of digital processing, be used to adjust positive zone image and about the value of correction constant of brightness of image in zone be set at and do not have the very value of big-difference, thereby can access implemented after the brightness correction positive zone and about do not produce the significant difference of deep or light degree between the image in zone, and the panoramic picture P of the inconspicuous good visual effect in bonding part, wherein, this side light quantity restraint device 13l, 13r is used for restriction through prism 16l, 16r, 26l, 26r, 36l, 36r, 46,56,66lu, 66ru, 66ld, 66rd and the light quantity that converges to photo detector 3, this center light quantity restraint device 13c is used for than side light quantity restraint device 13l, 13r limits directly by a larger margin to center lens 8c incident and the light quantity that converges to photo detector 3.
Claims (5)
1. wide-angle camera apparatus has:
Lens optical system, it converges the light of incident in the angle that is taken of wide-angle in the angle that is taken of each regulation, thereby forms a plurality of pictures on the focal plane;
Camera head, it is configured on the above-mentioned focal plane, and a plurality of pictures that are used for forming by the said lens optical system are transformed to the image information of electronics;
Image-reproducing means, the image information of its a plurality of pictures after to above-mentioned camera head conversion is implemented brightness correction, and engages on this basis, thereby is reproduced as panoramic picture,
Above-mentioned wide-angle camera apparatus is characterised in that,
The said lens optical system has:
Optical lens array, its in one plane be formed with center lens and about the side lens form, this center lens is used to accept the light of the positive regional incident in the above-mentioned angle that is taken, side lens configuration about this is in the left and right sides of this center lens, and its optical axis is parallel with the optical axis of this center lens, be used to accept in the above-mentioned angle that is taken about the light of regional incident;
Prism, the light incident side that it is configured in the side lens about above-mentioned, be used to make in the above-mentioned angle that is taken about the light of regional incident reflect in the mode consistent and guide to above-mentioned each side lens with the optical axis of above-mentioned each side lens;
Side light quantity restraint device, it is used to limit by above-mentioned prism guiding the light quantity through converging to above-mentioned camera head behind the lens of above-mentioned side;
Center light quantity restraint device, it is used for limiting by a larger margin than above-mentioned side light quantity restraint device and is directly incident on the light quantity that converges to above-mentioned camera head after the above-mentioned center lens without above-mentioned prism, wherein,
Above-mentioned camera head has photodetector array, this photodetector array disposes in the mode that is parallel to above-mentioned optical lens array across predetermined distance from above-mentioned optical lens array, be used to take by above-mentioned center lens and about the picture that forms respectively of side lens
Above-mentioned image-reproducing means respectively to above-mentioned photodetector array be transformed in the image in the positive zone in the above-mentioned angle that is taken of image information and the above-mentioned angle that is taken about the image in zone implement brightness correction, and syntheticly implemented each image of brightness correction and be reproduced as panoramic picture.
2. wide-angle camera apparatus as claimed in claim 1 is characterized in that, above-mentioned side light quantity restraint device and above-mentioned center light quantity restraint device are respectively the diaphragms that disposes near above-mentioned side lens and above-mentioned center lens.
3. wide-angle camera apparatus as claimed in claim 1 is characterized in that, above-mentioned side light quantity restraint device and above-mentioned center light quantity restraint device are respectively the lip-deep filter layers that is coated in above-mentioned side lens and above-mentioned center lens.
4. wide-angle camera apparatus as claimed in claim 2 is characterized in that,
In above-mentioned optical lens array, above-mentioned center lens disposes in the mode of the light that can accept the 40 ° of scopes zone incidents in front in the above-mentioned angle that is taken, side lens about above-mentioned with can accept in the above-mentioned angle that is taken about the mode of light of each 40 ° of scopes zone incident dispose
Above-mentioned prism is isosceles right-angle prism or 60 ° of-30 ° of right-angle prisms,
Above-mentioned image-reproducing means respectively to above-mentioned photodetector array be transformed in the image in the 40 ° of scope zones, front in the angle that is taken of image information and the above-mentioned angle that is taken about the image in 40 ° of scope zones implement brightness correction, and syntheticly implemented each image of brightness correction and be reproduced as field angle at the panoramic picture more than 120 °.
5. wide-angle camera apparatus as claimed in claim 3 is characterized in that,
In above-mentioned optical lens array, above-mentioned center lens disposes in the mode of the light that can accept the 40 ° of scopes zone incidents in front in the above-mentioned angle that is taken, side lens about above-mentioned with can accept in the above-mentioned angle that is taken about the mode of light of each 40 ° of scopes zone incident dispose
Above-mentioned prism is isosceles right-angle prism or 60 ° of-30 ° of right-angle prisms,
Above-mentioned image-reproducing means respectively to above-mentioned photodetector array be transformed in the image in the 40 ° of scope zones, front in the angle that is taken of image information and the above-mentioned angle that is taken about the image in 40 ° of scope zones implement brightness correction, and syntheticly implemented the image of brightness correction and be reproduced as the panoramic picture of field angle more than 120 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007034882 | 2007-02-15 | ||
| JP2007034882A JP2008197540A (en) | 2007-02-15 | 2007-02-15 | Wide-angle imaging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101246302A true CN101246302A (en) | 2008-08-20 |
Family
ID=39756518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101621945A Pending CN101246302A (en) | 2007-02-15 | 2007-12-21 | Wide-angle camera apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008197540A (en) |
| CN (1) | CN101246302A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930162A (en) * | 2009-06-22 | 2010-12-29 | 富士胶片株式会社 | Imaging device and control method thereof |
| CN102033410A (en) * | 2009-09-30 | 2011-04-27 | 鸿富锦精密工业（深圳）有限公司 | Shooting system |
| CN102340633A (en) * | 2011-10-18 | 2012-02-01 | 深圳市远望淦拓科技有限公司 | Method for generating image with fisheye effect by utilizing a plurality of video cameras |
| CN105872324A (en) * | 2015-02-09 | 2016-08-17 | 全视技术有限公司 | Wide-angle camera using achromatic doublet prism array and method of manufacturing the same |
| CN105960796A (en) * | 2014-02-18 | 2016-09-21 | 富士胶片株式会社 | Automatic tracking image-capture apparatus |
| WO2019194745A1 (en) * | 2018-04-03 | 2019-10-10 | National University Of Singapore | Method and system for recording an image using one or more prisms |
| CN114859445A (en) * | 2022-05-27 | 2022-08-05 | 北京理工大学 | Compound eye imaging system |
| CN116054957A (en) * | 2023-01-10 | 2023-05-02 | 北京理工大学 | Ultra-wide coverage optical communication receiving system based on compound eye structure |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5569859B2 (en) * | 2010-03-23 | 2014-08-13 | 株式会社ニコン | Imaging device |
| KR101734963B1 (en) | 2010-07-05 | 2017-05-12 | 삼성전자주식회사 | Imaging device including a plurality of imaging modules |
| JP5621615B2 (en) * | 2011-01-21 | 2014-11-12 | 株式会社リコー | Imaging device |
| JP6239993B2 (en) * | 2014-02-07 | 2017-11-29 | オリンパス株式会社 | Imaging device, display device, and control method |
-
2007
- 2007-02-15 JP JP2007034882A patent/JP2008197540A/en not_active Withdrawn
- 2007-12-21 CN CNA2007101621945A patent/CN101246302A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930162A (en) * | 2009-06-22 | 2010-12-29 | 富士胶片株式会社 | Imaging device and control method thereof |
| CN102033410A (en) * | 2009-09-30 | 2011-04-27 | 鸿富锦精密工业（深圳）有限公司 | Shooting system |
| CN102033410B (en) * | 2009-09-30 | 2013-11-20 | 鸿富锦精密工业（深圳）有限公司 | Shooting system |
| CN102340633A (en) * | 2011-10-18 | 2012-02-01 | 深圳市远望淦拓科技有限公司 | Method for generating image with fisheye effect by utilizing a plurality of video cameras |
| CN105960796A (en) * | 2014-02-18 | 2016-09-21 | 富士胶片株式会社 | Automatic tracking image-capture apparatus |
| CN105960796B (en) * | 2014-02-18 | 2019-08-16 | 富士胶片株式会社 | Automatic tracking camera device |
| CN105872324A (en) * | 2015-02-09 | 2016-08-17 | 全视技术有限公司 | Wide-angle camera using achromatic doublet prism array and method of manufacturing the same |
| WO2019194745A1 (en) * | 2018-04-03 | 2019-10-10 | National University Of Singapore | Method and system for recording an image using one or more prisms |
| CN112204434A (en) * | 2018-04-03 | 2021-01-08 | 新加坡国立大学 | Method and system for recording images using one or more prisms |
| CN114859445A (en) * | 2022-05-27 | 2022-08-05 | 北京理工大学 | Compound eye imaging system |
| CN114859445B (en) * | 2022-05-27 | 2024-02-06 | 北京理工大学 | Compound eye imaging system |
| CN116054957A (en) * | 2023-01-10 | 2023-05-02 | 北京理工大学 | Ultra-wide coverage optical communication receiving system based on compound eye structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008197540A (en) | 2008-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101246302A (en) | Wide-angle camera apparatus | |
| US10205862B2 (en) | Methods and apparatus relating to a camera including multiple optical chains | |
| US8305425B2 (en) | Solid-state panoramic image capture apparatus | |
| EP1887790B1 (en) | Panoramic imaging device | |
| JP6027560B2 (en) | Automatic tracking imaging device | |
| US9426365B2 (en) | Image stabilization related methods and apparatus | |
| JP4259541B2 (en) | Panorama imaging device | |
| US7619653B2 (en) | Motion detection imaging device | |
| US20140192240A1 (en) | Camera methods and apparatus using optical chain modules which alter the direction of received light | |
| CN107948470B (en) | Camera module and mobile device | |
| US6345129B1 (en) | Wide-field scanning tv | |
| JP2013201466A (en) | Stereoscopic image pickup device | |
| US7116351B2 (en) | Imaging device | |
| US5649250A (en) | Image recording and reproducing system | |
| JP3676916B2 (en) | Stereoscopic imaging device and stereoscopic display device | |
| JP3678792B2 (en) | Stereo imaging device | |
| JP4083356B2 (en) | Imaging apparatus and imaging apparatus system | |
| JP2003101830A (en) | Photographing device | |
| JP4318366B2 (en) | Omnidirectional camera | |
| US10321025B2 (en) | Mobile device with folding optical elements | |
| JP3428733B2 (en) | Compound eye imaging system | |
| JPH0644099B2 (en) | Zoom lens | |
| JP5377179B2 (en) | IMAGING DEVICE AND IMAGING DEVICE CONTROL METHOD | |
| KR20070005123A (en) | Optical system to take a picture of cubic image | |
| JP2003087821A (en) | Stereoscopic image photographing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080820 |