CN102752503B - TV camera device with four spliced double-light-path CCDs (Charge Coupled Devices) - Google Patents
TV camera device with four spliced double-light-path CCDs (Charge Coupled Devices) Download PDFInfo
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- CN102752503B CN102752503B CN201210236125.5A CN201210236125A CN102752503B CN 102752503 B CN102752503 B CN 102752503B CN 201210236125 A CN201210236125 A CN 201210236125A CN 102752503 B CN102752503 B CN 102752503B
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Abstract
The invention discloses a TV camera device with four spliced double-light-path CCDs (Charge Coupled Devices) and belongs to the technical field of photoelectrical imaging. Two same imaging lens sets are adopted by the TV camera device; a turning reflector and an image synthesized compound prism are used for superposing two paths of light energies, so that the light energy on each CCD target surface is doubled; the problem of insufficient light energy on the CCD target surface during the process of splicing four single-light-path CCDs is solved; besides, the image synthesized compound prism, two light-splitting compound prisms and two reflectors are utilized to realize the separation of four CCD mounting surfaces; and a tuning mechanism containing two pairs of double optical wedges is used for eliminating the image position deviation of a two-path optical system, so that the problem of image seamless butt-joint during the process of splicing the four CCDs is effectively solved. The TV camera device provided by the invention has the advantages of simple structure, light weight, low cost, convenience in debugging, high reliability, and the like.
Description
Technical field
The invention belongs to photodetection field, relate to a kind of television pick-up equipment of many CCD device splicing, be mainly used in cannon photoelectric follow-up.
Background technology
Ccd video camera is as the necessary component of cannon photoelectronic reconnaissance detection system, be generally used for tracking and monitoring to target, it is generally made up of a CCD image device and different optical systems, and different optical systems has different visual field size and resolution index.For an optical system, when visual field is large, resolution is low, does not reduce again resolution in order to expand visual field, can be received and be realized with the optical imagery of visual field light path by the connecting method of two CCD or many CCD.
For the two CCD connecting methods of same light path, conventionally adopt semi-transparent semi-reflecting Amici prism that incident light is divided into two-way and penetrate, two-way emergent light luminous energy is the half of incident light, and they image in respectively on two CCD target surfaces.Image on two CCD forms the image frame of the two CCD splicings of a width after processing of circuit.But the visual field dilatation of this connecting method is limited.Carried out for 4 CCD whens splicing if realize larger visual field, just need to adopt two-stage Amici prism could realize more multiple CCD seamless splicing, the light energy that at this moment optical system arrives CCD will lose 3/4ths.In the time that ccd video camera is applied to compared with low-light (level) environment, the serviceability of this many CCD connecting method light energy losses to ccd video camera and picture quality can produce and have a strong impact on.
The at present splicing of CCD is mainly the splicing application of two CCD, and is restricted in actual applications because optical energy loss is excessive when same light path four CCD splicing.
The excessive problem of optical energy loss causing while adopting double light path image synthetic technology can solve same light path four CCD splicing.But while having adopted double light path compound imaging, in the time that two-way optics optical axis occurs that deviation is greater than 0.3 pixel, CCD sensitization energy decreases is obvious, thereby ccd image output there will be ghost image to cause image resolution ratio obviously to decline.The quality that ensures ccd image output when double light path image is synthetic, each light path must be less than 0.1 pixel at CCD target surface image space could meet the synthetic requirement of normal picture.Conventionally the double light path optical axis debud mode that we take can ensure that each light path is about 0.5-1 pixel in CCD target surface image space error, cannot meet the quality requirement of double light path image ccd image output when synthetic.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency existing for existing CCD splicing, and a kind of television pick-up equipment of the double light path four CCD splicings that adopt the synthetic adjusting mechanism of image is provided.
For solving the problems of the technologies described above, double light path four CCD splicing television pick-up equipments provided by the invention comprise first lens group, the second set of lenses, installation frame, turnover reflective mirror, the adjustment mechanism of containing two pairs of wedges, composite prism, the first light splitting composite prism, the second light splitting composite prism, the first reflective mirror, the second reflective mirror, the one CCD, the 2nd CCD, the 3rd CCD and the 4th CCD, described installation frame is polymorphic structure body, on it, with the first to the 6th lens barrel being parallel to each other and seven lens barrel vertical with these lens barrels, a 7th lens barrel side radially communicates with the second lens barrel, opposite side radially and trinocular tube, the 5th lens barrel communicates, the input of the 7th lens barrel is vertical adjacent with the output of the first lens barrel, the output of the 7th lens barrel is vertical adjacent with the input of the 6th lens barrel, a side of the posterior segment of trinocular tube be provided with light hole and this light hole vertical adjacent with the input of the 4th lens barrel, trinocular tube, the 4th lens barrel, the output direction of the 5th lens barrel and the 6th lens barrel communicates, first lens group and the second set of lenses are identical telephotolens groups and are arranged on respectively in the first lens barrel and the second lens barrel, described adjustment mechanism is threaded in the second lens barrel and is positioned at the rear end of the second lens, and wherein the angle of wedge of a pair of wedge is vertical with another angle of wedge to wedge, described turnover reflective mirror is that right-angle prism and two right-angle planes are separately fixed at the first lens barrel with on vertical two the adjacent end faces of the 7th lens barrel, described composite prism is block prism and the intersection that is positioned at the second lens barrel and trinocular tube, described the first light splitting composite prism and the second light splitting composite prism are block prism and lay respectively at trinocular tube and the posterior segment of the 7th lens barrel, described the first reflective mirror and the second reflective mirror are right-angle prism, the first reflective mirror is fixed on described light hole with on vertical two the adjacent end faces of described the 4th lens barrel, and the second reflective mirror is fixed on described the 7th lens barrel with on vertical two the adjacent end faces of described the 6th lens barrel, first to fourth CCD is corresponding to be one by one connected with the rear end face of trinocular tube, the 4th lens barrel, the 5th lens barrel, the 6th lens barrel, described first lens group enters described composite prism to the imaging beam of target after described turnover reflective mirror reflection, and light beam is after composite prism light splitting, and half luminous energy enters the first light splitting composite prism, and second half luminous energy enters the second light splitting composite prism, the second set of lenses sees through described image combination mechanism to the imaging beam of target and enters composite prism, and light beam is after composite prism light splitting, and half luminous energy enters the first light splitting composite prism, and second half luminous energy enters the second light splitting composite prism, enter second half reflection of light beam one half transmitting of the first light splitting composite prism, a part for transmitted light beam is that the first quartile image of target is focused on the target surface of a CCD, and a part for folded light beam is that the second quadrantal diagram picture of target reflects post-concentration on the target surface of the 2nd CCD through the first reflective mirror, enter second half reflection of light beam one half transmitting of the second light splitting composite prism, a part for transmitted light beam is that the fourth quadrant image of target is focused on the target surface of the 3rd CCD, and a part for folded light beam is that the third quadrant image of target reflects post-concentration on the target surface of the 4th CCD through the second reflective mirror.
Overall technology effect in the present invention is embodied in the following aspects.
(1) the present invention, by an image synthetic composite prism, two light splitting composite prisms and two reflective mirrors, has realized the separation of four CCD installed surfaces, the image seamless docking while effectively having solved four CCD splicings.
(2) the present invention adopts double light path optical system, i.e. two identical set of lenses, wherein, the emergent light of first lens group synthesizes after composite prism by turnover reflective mirror, image, its light energy is added in the emitting light path of the second set of lenses, overcome the defect of luminous energy deficiency while realizing four CCD splicings with the two-stage light splitting of monochromatic light road, improved the performance of four CCD splicing practical applications.
(3) the present invention has adopted the synthetic adjusting mechanism of the image that contains two groups of wedge compositions, the wedge of the movement in wedge group moves axially the image space that can change image, in two groups of wedge groups one group can be adjusted the horizontal direction image space of the second set of lenses image, and another group can be adjusted the vertical direction image space of the second set of lenses image.Move axially adjustment by wedge and easily meet the coincidence error requirement at horizontal imaging position and vertical image space of the image of first lens group and the image of the second set of lenses, can meet the resolution capability requirement of the image of first lens group and the image of the second set of lenses composograph of CCD output when synthetic.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of double light path four CCD splicing television pick-up equipments.
Fig. 2 is the structural representation of installation frame in the present invention.
Fig. 3 is the optical schematic diagram of double light path four CCD splicing television pick-up equipments.
Fig. 4 is the composition schematic diagram of adjustment mechanism in the present invention.
Fig. 5 is the structural representation of support shown in Fig. 4.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the television pick-up equipment preferred embodiment of double light path of the present invention four CCD splicings comprise for the first lens group 1 of imaging and the second set of lenses 1 ', installation frame 2, turnover reflective mirror 3, for the synthetic adjustment mechanism 4 of image, for image synthetic composite prism 5, the first light splitting composite prism 6 and the second light splitting composite prism 6 ', the first reflective mirror 7 and the second reflective mirror 7 ', first to fourth CCD8a, 8b, 8c and 8d.
Shown in Fig. 2, installation frame 2 is polymorphic structure body, on it, with first to the 7th lens barrel 2-1～2-7, wherein first be parallel to each other to the axis of the 6th lens barrel 2-1～2-6, the 7th lens barrel 2-7 communicate with the second lens barrel 2-2, trinocular tube 2-3, the 5th lens barrel 2-5 and axis vertical.On the sidewall of trinocular tube 2-3 stage casing, have light hole 2-3-1 and slightly larger in diameter in 1/4th of trinocular tube 2-3 stage casing light hole diameter, light hole 2-3-1 is positioned at the first quartile place (eyeing right from drawing left side) in Gai Ce section, trinocular tube 2-3 stage casing and adjacent with the incident end face of the 4th lens barrel 2-4, the logical light diameter in the 7th lens barrel 2-7 posterior segment is identical with trinocular tube 2-3 stage casing light hole diameter, the 7th lens barrel 2-7 back segment, trinocular tube 2-3 back segment, the 4th lens barrel 2-4, the logical light diameter of the 5th lens barrel 2-5 and the 6th lens barrel 2-6 is all identical with light hole 2-3-1 diameter.Trinocular tube 2-3 back segment undergauge is also positioned at the third quadrant (from the lens barrel rear end face being parallel to each other) in trinocular tube 2-3 overall diameter cross section; The 7th lens barrel 2-7 back segment undergauge is also positioned at the fourth quadrant (eyeing right from drawing left side) in the 7th lens barrel 2-7 overall diameter cross section and vertical adjacent with the incident end face of the 6th lens barrel 2-6; The 5th lens barrel 2-5 is positioned at second quadrant (from the lens barrel rear end face being parallel to each other) in the 7th side section, lens barrel 2-7 posterior segment, and the light exit side direction of trinocular tube 2-3, the 4th lens barrel 2-4, the 5th lens barrel 2-5, the 6th lens barrel 2-6 is consistent.First lens group 1 and the second set of lenses 1 ' be identical telephotolens group, first lens group 1 is arranged in the first lens barrel 2-1, and the front end of the second set of lenses 1 ' be arranged on the second lens barrel 2-2 is light beam incident end.Adjustment mechanism 4 screw threads are connected in the rear end of the second lens barrel 2-2.Turnover reflective mirror 3 is right-angle prism, and two right-angle plane is bonded in respectively on two vertical adjacent end faces of the first lens barrel 2-1 and the 7th lens barrel 2-7.Composite prism 5 is the block prism of two bonding one-tenth of right-angle prism, and composite prism 5 is positioned at the 7th lens barrel 2-7 and the crossing position of second, third lens barrel 2-2,2-3 and two right angle faces of an one right-angle prism and is bonded in respectively on the front end face of trinocular tube 2-3 and a locating surface of the 7th lens barrel 2-7.Two right-angle prisms of the first light splitting composite prism 6 and the second light splitting composite prism 6 ' be bonding become block prism, the first light splitting composite prism 6 is fixed on the posterior segment of trinocular tube 2-3, the second light splitting composite prism 6 ' be fixed on posterior segment of the 7th lens barrel 2-7.The first reflective mirror 7 and the second reflective mirror 7 ' be right-angle prism, two right angle faces of the first reflective mirror 7 are bonded in respectively on trinocular tube 2-3 light hole 2-3-1 and two vertical adjacent end faces of the 4th lens barrel 2-4, the second reflective mirror 7 ' two right angle faces be bonded in respectively on two vertical adjacent end faces of the 7th lens barrel 2-7 and the 6th lens barrel 2-6.First to fourth CCD8a, 8b, 8c and 8d one by one on the corresponding rear end face that is connected in trinocular tube 2-3, the 4th lens barrel 2-4, the 5th lens barrel 2-5 and the 6th lens barrel 2-6 and target surface all with first lens group 1 and the second set of lenses 1 ' focal plane overlap.
Shown in Fig. 3, image-forming principle of the present invention is, first lens group 1 enters composite prism 5 to the imaging beam of target after the reflecting surface A of turnover reflective mirror 3 reflection, light beam is after the light splitting surface B of composite prism 5 light splitting, half luminous energy enters the first light splitting composite prism 6, second half luminous energy enter the second light splitting composite prism 6 '.The second set of lenses 1 ' to the imaging beam of target see through image combination mechanism 4 enter composite prism 5, light beam is through the light splitting surface B of composite prism 5 light splitting, half luminous energy enters the first light splitting composite prism 6, second half luminous energy enter the second light splitting composite prism 6 '.Enter the light beam half luminous energy of the first light splitting composite prism 6 through light splitting surface C transmission, second half luminous energy reflects through light splitting surface C, a part for transmitted light beam is that the first quartile image of target is focused on the target surface of a CCD8a, and a part for folded light beam is that the second quadrantal diagram picture of target reflects post-concentration on the target surface of the 2nd CCD8b through the reflecting surface D of the first reflective mirror 7.Enter the second light splitting composite prism 6 ' light beam half luminous energy through light splitting surface C ' transmission, second half luminous energy is through light splitting surface C ' reflection, a part for transmitted light beam is that the fourth quadrant image of target is focused on the target surface of the 3rd CCD8c, a part for folded light beam be target third quadrant image through the second reflective mirror 7 ' reflecting surface D ' reflection post-concentration on the target surface of the 4th CCD8d.
Shown in Fig. 4, adjustment mechanism 4 comprises that the first wedge assembly 9, the second wedge assembly 11, two adjust only spiral shell 12 of 13, two of volutions 10, support 14, trim ring.The composition of first, second wedge assembly 9,11 is identical and all contain a fixing wedge and a movable wedge, and the angle of wedge of fixing wedge and movable wedge is 1.5 °.The external screw thread of the carriage of movable wedge equates with the pitch of adjustment volution 10 and is equal to 0.5mm.Shown in Fig. 5, support 14 is with two symmetrical projection bar 14-2 on an end face of circle ring disk 14-1, and the lateral surface of projection bar 14-2 is threaded circular cambered surface, and its excess-three face is that plane and medial surface are parallel with the axis of circle ring disk 14-1.First, second wedge assembly 9,11 is all coaxially arranged between two projection bar 14-2 of support 14, wherein, two fixing wedges are connected with two projection bar 14-2 respectively by the square groove on carriage separately, the wedge angular direction of the first wedge assembly 9 is consistent with the axial direction of projection bar 14-2, and the wedge angular direction of the second wedge assembly 11 is vertical with the wedge angular direction of the first wedge assembly.Two adjustment volutions 10 are adjacent to empty set and are threaded with the carriage of two movable wedges respectively the outside of projection bar 14-2 and two adjustment volutions 10, wherein, an end face adjusting volution is positioned on the end face of circle ring disk of bracing frame 14, and trim ring 13 is threaded with two projection bar 14-2 and an end face and another adjustment volution of trim ring 13 are close to.
The method of adjustment of the preferred embodiment of the present invention is as follows:
The television pick-up equipment of double light path four CCD splicings is placed on before the parallel light tube with chequer, and the output of first to fourth CCD8a～8b is connected with monitor by cable simultaneously.Regulate point two large steps to carry out.
The first step, first block the second set of lenses 1 ' incident end, only allow the image of parallel light tube from 1 incident of first lens group, then divide following link adjustment: the position of (1) accurate adjustment the one CCD8a, makes its image end normal incidence showing be positioned at first quartile place and meet certain required precision on monitor; (2) position of accurate adjustment the 2nd CCD8b, its two horizontal lines up and down that are presented at monitor screen the second quadrant place image are alignd one by one with two horizontal lines up and down of first quartile image, and make the left side vertical line of first quartile image and the right vertical line of the second quadrantal diagram picture overlapping; (3) position of accurate adjustment the 3rd CCD8c, makes it be presented at the left and right vertical line of monitor screen fourth quadrant image and the left and right vertical line of first quartile image aligns one by one, and makes the upper horizontal line of fourth quadrant image and the bottom rail line overlap of first quartile image; (4) position of accurate adjustment the 4th CCD8d, its left and right vertical line that is presented at monitor screen third quadrant image is alignd one by one with the left and right vertical line of the second quadrantal diagram picture, simultaneously, the right vertical line of third quadrant image and the left vertical line of fourth quadrant image are overlapping, the bottom rail line overlap of the upper horizontal line of third quadrant image and the second quadrantal diagram picture.After above-mentioned processing, what on monitor screen, show is exactly four complete and desirable CCD stitching images.
Second step, takes down blocking before second set of lenses 1 ' input, and at this moment, the image of parallel light tube is simultaneously by first lens group 1, second set of lenses 1 ' incident.Whether the image of observing on monitor screen has ghost image or blooming, if there is horizontal line ghost image or fuzzy, rotate the movable wedge of the first wedge assembly 9 by volution 10, if there is vertical line ghost image or fuzzy, rotate the movable wedge of the second wedge assembly 11 by volution 10.
Claims (1)
1. double light path four CCD splicing television pick-up equipments, comprise first lens group (1), installation frame (2), the adjustment mechanism (4) of containing two pairs of wedges, composite prism (5), a CCD (8a), the 3rd CCD (8c), it is characterized in that: also comprise the second set of lenses (1 '), turnover reflective mirror (3), the first light splitting composite prism (6), the second light splitting composite prism (6 '), the first reflective mirror (7), the second reflective mirror (7 '), the 2nd CCD (8b) and the 4th CCD (8d), described installation frame (2) is polymorphic structure body, on it with the first to the 6th lens barrel (2-1 being parallel to each other, 2-2, 2-3, 2-4, 2-5, 2-6) and seven lens barrel (2-7) vertical with these lens barrels, the 7th lens barrel (2-7) side radially communicates with the second lens barrel (2-2), opposite side radially and trinocular tube (2-3), the 5th lens barrel (2-5) communicates, the input of the 7th lens barrel (2-7) is vertical adjacent with the output of the first lens barrel (2-1), the output of the 7th lens barrel (2-7) is vertical adjacent with the input of the 6th lens barrel (2-6), one side of the posterior segment of trinocular tube (2-3) be provided with light hole and this light hole vertical adjacent with the input of the 4th lens barrel (2-4), trinocular tube (2-3), the 4th lens barrel (2-4), the output direction of the 5th lens barrel (2-5) and the 6th lens barrel (2-6) communicates, first lens group (1) and the second set of lenses (1 ') are identical telephotolens groups and are arranged on respectively in the first lens barrel (2-1) and the second lens barrel (2-2), described adjustment mechanism (4) is threaded in the second lens barrel (2-2) and is positioned at the rear end of the second lens (1 '), and wherein the angle of wedge of a pair of wedge is vertical with another angle of wedge to wedge, described turnover reflective mirror (3) is separately fixed at the first lens barrel (2-1) with on vertical two the adjacent end faces of the 7th lens barrel (2-7) for right-angle prism and two right-angle planes, described composite prism (5) is block prism and the intersection that is positioned at the second lens barrel (2-2) and trinocular tube (2-3), described the first light splitting composite prism (6) and the second light splitting composite prism (6 ') are block prism and lay respectively at trinocular tube (2-3) and the posterior segment of the 7th lens barrel (2-7), described the first reflective mirror (7) and the second reflective mirror (7 ') are right-angle prism, the first reflective mirror (7) is fixed on described light hole (2-3-1) with on vertical two the adjacent end faces of described the 4th lens barrel (2-4), the second reflective mirror (7 ') is fixed on described the 7th lens barrel (2-7) with on vertical two the adjacent end faces of described the 6th lens barrel (2-6), first to fourth CCD (8a, 8b, 8c, 8d) is corresponding to be one by one connected with the rear end face of trinocular tube (2-2), the 4th lens barrel (2-4), the 5th lens barrel (2-5), the 6th lens barrel (2-6), described first lens group (1) enters described composite prism (5) to the imaging beam of target after described turnover reflective mirror (3) reflection, light beam is after composite prism (5) light splitting, half luminous energy enters the first light splitting composite prism (6), and second half luminous energy enters the second light splitting composite prism (6 '), the second set of lenses (1 ') sees through described adjustment mechanism (4) to the imaging beam of target and enters composite prism (5), light beam is after composite prism (5) light splitting, half luminous energy enters the first light splitting composite prism (6), and second half luminous energy enters the second light splitting composite prism (6 '), enter second half reflection of light beam one half transmitting of the first light splitting composite prism (6), a part for transmitted light beam is that the first quartile image of target is focused on the target surface of a CCD (8a), and a part for folded light beam is that the second quadrantal diagram picture of target reflects post-concentration on the target surface of the 2nd CCD (8b) through the first reflective mirror (7), enter second half reflection of light beam one half transmitting of the second light splitting composite prism (6 '), a part for transmitted light beam is that the fourth quadrant image of target is focused on the target surface of the 3rd CCD (8c), and a part for folded light beam is that the third quadrant image of target reflects post-concentration on the target surface of the 4th CCD (8d) through the second reflective mirror (7 ').
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| CN201210236125.5A CN102752503B (en) | 2012-07-09 | 2012-07-09 | TV camera device with four spliced double-light-path CCDs (Charge Coupled Devices) |
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| CN103148839B (en) * | 2013-02-06 | 2014-12-17 | 北京空间机电研究所 | Lens light splitting mode-based focal plane splicing aerial surveying camera with extra large plane |
| CN106060354B (en) * | 2016-07-07 | 2019-09-17 | 西安应用光学研究所 | A kind of high frame-rate digital CCD photographic device of double large area arrays |
| CN107846534A (en) * | 2017-09-18 | 2018-03-27 | 努比亚技术有限公司 | A kind of camera and photographic method |
| CN108398786A (en) * | 2018-03-12 | 2018-08-14 | 深圳市易瞳科技有限公司 | A kind of augmented reality display device |
| CN113630485A (en) * | 2020-05-08 | 2021-11-09 | 北京小米移动软件有限公司 | Full screen display method, full screen display device and terminal |
| RU2769274C1 (en) * | 2021-04-28 | 2022-03-29 | Александр Иванович Горбатюк | Method of forming digital image using several ccd and device for implementation thereof |
| CN115576082B (en) * | 2022-12-08 | 2023-04-11 | 中国科学院西安光学精密机械研究所 | Remote large-breadth imaging system for extreme illumination environment |
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| CN101562693A (en) * | 2009-06-01 | 2009-10-21 | 中国兵器工业第二〇五研究所 | Optical imaging splicing device of double CCD image splicing detector |
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