WO2017111558A1 - 단안식 입체 카메라 - Google Patents
단안식 입체 카메라 Download PDFInfo
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- WO2017111558A1 WO2017111558A1 PCT/KR2016/015239 KR2016015239W WO2017111558A1 WO 2017111558 A1 WO2017111558 A1 WO 2017111558A1 KR 2016015239 W KR2016015239 W KR 2016015239W WO 2017111558 A1 WO2017111558 A1 WO 2017111558A1
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- imaging lens
- lens assembly
- camera
- half mirror
- optical axis
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/106—Beam splitting or combining systems for splitting or combining a plurality of identical beams or images, e.g. image replication
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/0095—Relay lenses or rod lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1066—Beam splitting or combining systems for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/08—Stereoscopic photography by simultaneous recording
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/08—Stereoscopic photography by simultaneous recording
- G03B35/10—Stereoscopic photography by simultaneous recording having single camera with stereoscopic-base-defining system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
- H04N13/236—Image signal generators using stereoscopic image cameras using a single 2D image sensor using varifocal lenses or mirrors
Definitions
- the present invention relates to a monocular stereoscopic camera for capturing a stereoscopic image of a subject, and more specifically, to control the same image image captured by the camera quickly and precisely at the shooting site, to change the optical axis, It relates to a monocular stereoscopic camera that can adjust and correct the positional error of the camera.
- a stereoscopic camera is a camera that can simultaneously acquire a left eye image and a right eye image of a subject by using two cameras.
- a stereoscopic camera is a left eye camera that acquires a left eye image of a subject and a right eye camera that acquires a right eye image of a subject. Consists of.
- FIG. 1 is a schematic diagram of a stereoscopic camera of the prior art.
- light of the subject 1 passes through the main lens 6, and light passing through the half mirror H is imaged by the left eye camera 4 to obtain a left eye image 5, and the half mirror
- the light reflected by (H) is imaged in the right eye camera 2 to obtain the right eye image 3.
- the images 3 and 5 acquired by the left eye camera 4 and the right eye camera 2 may have a binocular parallax d to implement a stereoscopic image.
- the right eye image 3 and the left eye image 5 should have binocular parallax and the image size should be the same. If the image size itself of the right eye image 3 and the left eye image 5 are not the same, a stereoscopic image having a significantly lower quality is obtained.
- the stereoscopic camera of the prior art controls the left eye camera 4 to move forward / backward along the optical axis (moving on the X axis) so that the size of the image is the same so that the image size of the left eye image and the right eye image are the same, Move (2) back and forth along the optical axis to control the image size to be the same.
- the subject changes every moment, and it is practically difficult to take a three-dimensional image while moving the left and right cameras slightly forward and backward, and the control of changing the mechanical position of the camera is very cumbersome.
- the stereoscopic camera needs to change the optical axis of the left eye camera and the right eye camera or adjust the angle of view in order to acquire a stereoscopic image.
- the left eye camera 4 changes the optical axis by rotating the left eye camera about the Z axis Or adjust the visual angle.
- the angle of view refers to the position of the convergence point, which is the point at which the left and right images coincide on the screen when the subject is photographed with two cameras or lenses separated by a predetermined distance from side to side. You can adjust it so that the three-dimensional image of the subject pops out in front of the screen or looks back.
- Optical axis alignment refers to correcting the position of the half mirror or camera to match the optical axis. If the optical axis is not aligned, good quality stereoscopic images cannot be obtained. Therefore, in order to change the optical axis of the left eye camera and the right eye camera, in the case of the left eye camera 4, the conventional technique is that the photographer rotates the left eye camera 4 about the Y axis to change the optical axis or rotates about the Z axis to adjust the optical axis. Change it.
- the stereoscopic camera of the prior art uses a method in which the photographer directly moves or rotates the physical position of the camera to acquire a stereoscopic image.
- Korean Patent No. 1214855 is equipped with an adjustment module for both the left eye and the right eye camera, and adjusts the optical axis alignment and the viewing angle using the adjustment module.
- the Republic of Korea Patent No. 1214855 has a problem that the control module is very complicated, so that it is inapplicable to a shooting site for photographing a moving subject at a time, and that the cost used for commercialization is expensive.
- the distance between the left and right lenses and the subjects photographing the left and right eye images, as well as the physical characteristics of the two lenses, must be identical. Since there are errors in manufacturing the lens, it is difficult to create a physically matched lens. have. It is very difficult to capture precise stereoscopic images using two physically inconsistent lenses, but two lenses with limitations of physical identity can only obtain high quality stereoscopic images by matching the image size of the left and right eye images. Because there is. Therefore, there is an urgent need for a new concept of a monocular stereoscopic camera capable of controlling image size, angle of view, and optical axis change quickly, easily and precisely at the shooting site.
- the present invention has been proposed to solve the above problems, and without the position and rotation of the camera body, the photographer can easily and easily control the image images captured by (1) the first and second cameras of the camera, 2) It is an object of the present invention to provide a monocular stereoscopic camera capable of changing the optical axis, (3) adjusting the viewing angle, and (4) correcting the position error of the third imaging lens assembly, the half mirror, and the camera.
- the monocular stereoscopic camera reflects a part of the light beams passing through the first imaging lens assembly 10 and the first imaging lens assembly 10 and the half mirror H passes the rest.
- the first camera 30 includes a third imaging lens assembly 31 to form a light beam reflected by the half mirror H, and a third imaging lens assembly to form a light beam passing through the half mirror H.
- the monocular camera of the present invention includes the second imaging lens assembly 20, 21, 22 on the optical axis to move the second imaging lens assembly 20, 21, 22 along the optical axis, thereby causing the third imaging lens assembly to be moved.
- the focus positions of the first and second cameras 31 and 41 may be changed or the image size of the first camera 30 and the image size of the second camera 40 may be the same.
- the second imaging lens assembly 20, 21, 22 is rotated about an extension line (Y-axis, Y-axis) extending in a vertical direction leftward with respect to the optical axis (hereinafter 'tilting').
- the optical axis is aligned, and the second imaging lens assembly 20, 21, 22 is rotated about an extension line (Z-axis, Z′-axis) extending in a lower vertical direction with respect to the optical axis.
- panning optical axis alignment and vergence adjustment may be performed.
- the monocular stereoscopic camera according to the present invention can (1) control the image images captured by the first and second cameras equally and easily, and (2) change the optical axis without the position manipulation and rotation of the camera itself. 3) adjust the viewing angle, and (4) correct the position errors of the third imaging lens assembly, the half mirror, and the camera.
- FIG. 1 is a configuration diagram illustrating a conventional monocular stereoscopic camera.
- FIG. 2 is a block diagram of a monocular stereoscopic camera according to a first embodiment of the present invention.
- 3 to 5 are schematic diagrams of a half camera H shown in FIG. 2 and a single camera.
- FIG. 6 is a block diagram of a monocular stereoscopic camera according to a second embodiment of the present invention.
- FIG. 7 is a configuration diagram of a stereoscopic camera according to a third embodiment of the present invention.
- FIG. 8 is a configuration diagram of a stereoscopic camera according to a fourth embodiment of the present invention.
- FIG. 9 is a perspective view of a stereoscopic camera according to a fifth embodiment incorporating the optical configuration of FIG. 2.
- FIG. 10 is an exploded perspective view illustrating the three-dimensional camera of FIG. 9.
- FIG. 11 is a view illustrating an enlarged image and a cross-sectional view of the second imaging lens housing illustrated in FIGS. 9 and 10.
- FIG. 12 is an exploded perspective view illustrating the Gonio stage, which is the panning, tilting and rolling means shown in FIGS. 9 and 10.
- the "stereoscopic image” described below includes not only a stereoscopic image of a stationary subject but also a moving image connecting a dynamic stereoscopic image of a moving subject, and the " ⁇ imaging lens assembly” may be formed as a single lens, but may include two or more lenses. It can also be done.
- the present invention can easily and easily control the image image, change the optical axis, adjust the viewing angle, and correct the position error of the camera using the second imaging lens assembly without the camera's position shift.
- the monocular stereoscopic camera 100 of the present invention includes a first imaging lens assembly 10, a half mirror H, a second imaging lens assembly 21 and 22, and a third imaging lens assembly. 31, 41, a first camera 30, and a second camera 40.
- the first imaging lens assembly 10 converges the light incident from the subject 8.
- the light beam passing through the first imaging lens 10 passes through the half mirror H.
- the half mirror H reflects some of the light rays and passes the rest.
- the light rays reflected by the half mirror H pass through the second imaging lens assembly 21 and are then imaged in the third imaging lens assembly 31, and the light rays passing through the half mirror H pass through the second imaging lens assembly.
- the third imaging lens assembly 41 is imaged.
- the third imaging lens assemblies 31 and 41 may be mounted on the first and second cameras 30 and 40, as shown in FIG. 2.
- the stereoscopic camera 100 of this embodiment is in the form of an orthogonal rig in which each optical axis connecting the half mirror H and the third imaging lens assemblies 31 and 41 is vertical or near vertical.
- the second imaging lens assembly 21, 22 can (1) change the focal position of the third imaging lens assembly 31, 41, (2) The image size formed on the third imaging lens assembly 31 and the image size formed on the third imaging lens assembly 41 may be controlled to be the same.
- the conventional technique is to move the first camera 30 and the second camera 40 itself on which the third imaging lens assemblies 31 and 41 are mounted along the optical axis (X ′ axis, X axis).
- the focal positions of the third imaging lens assemblies 31 and 41 were adjusted and adjusted so that the image sizes of the first and second cameras were the same.
- the method of moving the first and second cameras 30 and 40 itself is very cumbersome and time-consuming to easily and quickly control a moving subject at any time in the shooting scene.
- the present invention devised a method of moving and rotating the second imaging lens assembly 21 and 22. First, the structure and function of the second imaging lens assembly 21 and 22 will be described.
- FIGS. 3 to 5 are schematic diagrams in which the half mirror H shown in FIG. 2 is deleted and configured as a single camera.
- FIG. 3 illustrates a case where the second imaging lens assembly 21 is installed
- FIG. 4 illustrates a case where the second imaging lens assembly 21 is not installed.
- the second imaging lens assembly 21 serves to pull the focal position of the third imaging lens assembly 41 forward, that is, to move the focal position of the third imaging lens assembly 41 to the right side of FIG. 3.
- the length of (the length from the first imaging lens assembly 10 to the imaging surface 46) can be reduced (so that the position of the first imaging lens assembly can be moved to the right side of the drawing).
- the focal position of the third imaging lens assembly 41 should be the position of the virtual image 9 of the first imaging lens assembly 10
- the third imaging lens assembly 21 is used to perform the third imaging. The effect of advancing the focal position of the lens assembly 41 can be brought.
- the second imaging lens assembly 21 serves to control the focus position and the image size of the third imaging lens assembly 41. Furthermore, when the second imaging lens assembly 21 is moved along the optical axis, the focus position and the image size of the third imaging lens assembly 41 are controlled without moving the third imaging lens assembly 41 and the camera 40 itself. can do.
- the focus position is adjusted while moving the positions of the first camera 30 and the second camera 40 along the optical axis according to the position of the subject during the shooting, and the image of the first camera 30 is adjusted. Matching the size with the image size of the second camera 40 is essential.
- the present invention moves the second imaging lens assembly 21 along the optical axis between the half mirror H and the third imaging lens assembly 31 without moving the position of the first and second cameras 30 and 40.
- the focus position is adjusted by moving the second imaging lens assembly 22 along the optical axis between the half mirror H and the third imaging lens assembly 41, and the image size of the first camera 30 and the second camera 40 are adjusted. Can be controlled to have the same image size.
- the second imaging lens assembly 22 rotates about the Z axis, and the second imaging lens assembly 21 rotates around the Z ′ axis by panning.
- the angle of view refers to the position of the convergence point, which is the point where the two images are matched on the screen when the subject is photographed with two cameras or lenses separated by a predetermined distance from side to side. By placing the location closer or farther away, you can adjust the stereoscopic image of the subject to protrude forward or back out of the screen.
- the monocular stereoscopic camera 100 adjusts the optical axis movement and angle of view by easily and simply panning the second imaging lens assembly 21, 22 without panning manipulation of the first and second cameras 30 and 40 itself. This is possible.
- the second imaging lens assembly 22 may rotate about the Y axis, and the second imaging lens assembly 21 may move the optical axis by tilting about the Y ′ axis. .
- Optical axis shift by tilting the second imaging lens assembly 21, 22 compensates for the position of the half mirror H, the first camera 30, the second camera 40, and the third imaging lens assembly 31, 41. For this purpose, it must be essentially controlled by the photographer at the time of shooting. For example, in order to correct an installation angle error of the half mirror H, the optical axis alignment is performed by finely moving the positions of the first and second cameras 30 and 40.
- the positions of the third imaging lens assemblies 31 and 41 and the first and second cameras 30 and 40 may not be physically perfectly vertically disposed, and may be reflected by the light beams passed and reflected through the half mirror H. In accordance with this, the positions of the first and second cameras 30 and 40 must be moved.
- the monocular stereoscopic camera according to the present invention is easy and simple without the tilting operation of the half mirror H, the third imaging lens assemblies 31 and 41, and the first and second cameras 30 and 40 itself.
- the optical axis can be moved by tilting the 21 and 22, and the positional errors of the half mirror H, the third imaging lens assembly 31 and 41, and the first and second cameras 30 and 40 can be compensated for. .
- the second imaging lens assembly 21 or 22 or the third imaging lens assembly 31 or 41 may be selected from at least one of a macro lens and a telephoto lens capable of close-up magnification.
- the third imaging lens assembly 31, 41 is limited when the distance between the imaging surface 36 and the third imaging lens assembly 31 and the distance between the imaging surface 46 and the third imaging lens assembly 41 are limited.
- a telephoto-based lens and using the second imaging lens assembly (21, 22) together to enable close-up photography to enlarge the image of the first imaging lens assembly 10, or the third imaging lens assembly ( 31 and 41, macro lenses (lenses capable of close-up magnification) are used, and further, the second imaging lens assembly 21 or 22 is used to bring the focus position closer to the second imaging lens assembly 21.
- 22 can have a function of correcting chromatic aberration and image curvature, so that the virtual image made behind the first imaging lens assembly 10 can be enlarged and photographed. It is also possible to use the above-described method in a cross or mixed manner.
- the close-up photographing may be performed as the third imaging lens assembly 31 or 41.
- Vignetting can be reduced by using a macro lens that can be used or a lens capable of adjusting the magnification in the second imaging lens assembly 20, and the selection width of the first imaging lens assembly 10 can be widened.
- the camera imaging surfaces 36 and 46 are separated from the first imaging lens assembly 10 as compared with the case of using a telephoto lens. It also has the effect of reducing the size of the entire system.
- a higher magnification lens (a lens having a short focal length of the lens) may be used for the second imaging lens assemblies 21 and 22.
- the second imaging lens assembly 21, 22 or the third imaging lens assembly 31, 41 may be selected from at least one of an achromatic lens and an apochromatic lens.
- Lenses or Apochromatic lenses may be used in physical combination.
- Achromatic lenses overlap two lenses with different refractive indices, which can reduce chromatic aberration.
- Apochromatic lenses overlap three or more lenses having different refractive indices, thereby further reducing chromatic aberration.
- the apochromatic includes a super achromatic lens and a hyper apochromatic lens which are manufactured by overlapping four or more lenses.
- the stereoscopic camera 100 may be installed in the second imaging lens assembly 20 to adjust the magnification of the lens to adjust the angle of view and minimize the vignetting phenomenon.
- the diaphragms 32 and 42 may be installed in the third imaging lens assemblies 31 and 41, and may not be installed in the first imaging lens assembly 10.
- the aperture-mounted lens is used as the first imaging lens assembly 10
- the aperture provided in the first imaging lens assembly 10 is photographed in an open state.
- FIG. 6 is a block diagram of a monocular stereoscopic camera according to a second embodiment of the present invention. Since the stereoscopic camera 200 according to the second embodiment of the present invention described below uses the same name for the same configuration as the stereoscopic camera 100 described in the first embodiment, all except for the arrangement relationship have the same meaning. Should be interpreted.
- the optical axes connecting the half mirror H and the third imaging lens assemblies 31 and 41 are arranged horizontally or close to each other.
- the stereoscopic camera 200 may further include reflectors 261, 263, and 265 so that the optical axis of the light beam passing through the half mirror H and the optical axis of the reflected light beam are parallel to each other.
- the reflectors 263 and 265 reflect the light beams passing through the half mirror H in the direction in which the second imaging lens assembly 21 and the third imaging lens assembly 32 are positioned.
- the reflector 261 reflects the light reflected by the half mirror H in the direction in which the second imaging lens assembly 22 and the third imaging lens assembly 41 are positioned.
- the reflectors 261, 263, 265 are not particularly limited as long as the optical axis can be changed by reflecting light rays, but includes, for example, a mirror.
- the panning and tilting of the second imaging lens assemblies 21 and 22 are the same as those described in the first embodiment.
- the second imaging lens assemblies 21 and 22 share the same image image captured by the first and second cameras simply and easily by positional movement, panning, and tilting along the optical axis. Control, change the optical axis, adjust the viewing angle, and correct the position error of the third imaging lens assembly, the half mirror, and the camera.
- the positions of the third imaging lens assemblies 31 and 41 may not be physically different from each other. Positioning, tilting and panning of the assemblies 21 and 22 can solve this problem.
- FIG. 7 is a configuration diagram of a stereoscopic camera according to a third embodiment of the present invention. Since the stereoscopic camera 300 according to the third exemplary embodiment uses the same name for the same configuration as the stereoscopic camera 100 described in the first exemplary embodiment, all except for the arrangement relationship should be interpreted as having the same meaning.
- the stereoscopic camera 300 includes a second imaging lens assembly 20 disposed between the first imaging lens assembly 10 and the half mirror H, and the second imaging lens assembly 21. And 22 are disposed between the half mirror H and the third imaging lens assemblies 31 and 41, respectively.
- the second imaging lens assembly 20, 21, 22 is moved, panned and tilted along the optical axis in the same manner as described in the stereoscopic camera 100 of the first embodiment.
- the second imaging lens assembly 20 moves along the X axis to change the focal positions of the third imaging lens assemblies 31 and 41, thereby changing the focal positions of the images of the first camera 30 and the second camera 40. You can.
- the second imaging lens assembly 22 moves along the X axis to change the focal position of the third imaging lens assembly 41 or control the image size of the first camera 30 and the second camera 40 to be the same. can do.
- the second imaging lens assembly 21 moves along the X 'axis to change the focal position of the third imaging lens assembly 31 or to make the image sizes of the first camera 30 and the second camera 40 the same. Can be controlled.
- the second imaging lens assembly 22 is panned by rotating the Z axis about the central axis and tilted by rotating the Y axis about the central axis.
- the second imaging lens assembly 21 is panned by rotating around the Z 'axis and tilted by rotating around the Y' axis.
- the second imaging lens assembly 20 is disposed between the first imaging lens assembly 10 and the half mirror H, and before the light beam passes through the half mirror H. It is also possible to change the focal position collectively or change the optical axis by panning and tilting. In addition, the second imaging lens assembly 20 may reduce the vignetting of the left and right images by installing a lens capable of adjusting the magnification.
- FIG. 8 is a configuration diagram of a stereoscopic camera according to a fourth embodiment of the present invention. Since the stereoscopic camera 400 according to the fourth exemplary embodiment uses the same name for the same configuration as the stereoscopic camera 100 described in the first exemplary embodiment, all except for the arrangement relationship should be interpreted as having the same meaning.
- a second imaging lens assembly 20 is disposed between the first imaging lens assembly 10 and the half mirror H.
- the second imaging lens assembly 20 moves along the X axis to change the focal position of the third imaging lens assembly 31 or 41 in the same manner as described in the stereoscopic camera 100 of the first embodiment. Vignetting of the image of the first camera 30 and the second camera 40 may be minimized by providing a lens with a magnification adjustable in the imaging lens assembly 20.
- the second imaging lens assembly 20 is disposed between the first imaging lens assembly 10 and the half mirror H, before the light beam passes through the half mirror H.
- the optical axis can be changed by changing the focus position collectively or by panning and tilting.
- FIG. 9 is a perspective view of a stereoscopic camera according to a fifth embodiment incorporating the optical configuration of FIG. 2, and FIG. 10 is an exploded perspective view of the stereoscopic camera of FIG. 9. Since the stereoscopic camera 500 according to the fifth embodiment has the same optical configuration of the stereoscopic camera 100 described in the first embodiment therein and uses the same name, the rest of the stereoscopic camera 500 has the same meaning except for the arrangement relationship. Should be interpreted.
- the first imaging lens assembly 10 is mounted on the main lens housing 510, and the half mirror is mounted on the mirror box 520. do.
- the second imaging lens assembly 21 is mounted on the second imaging lens housing 590
- the third imaging lens assembly 31 is mounted on the third imaging lens housing 530
- the first camera housing 540 is mounted on the second imaging lens housing 590.
- the first camera 30 is mounted.
- the second imaging lens assembly 22 is mounted on the second imaging lens housing 580, the third imaging lens assembly 41 is mounted on the third imaging lens housing 550, and the second imaging lens assembly 560 is mounted on the second camera housing 560.
- the second camera 40 is mounted
- the second imaging lens assembly 22 will be described. After moving along the optical axis, after performing tilting and panning, the position of the second imaging lens assembly 22 and the position of the second camera housing 560 are fixed. Subsequently, the second imaging lens assembly 21 is moved along the optical axis, and the positions of the second imaging lens assembly 21 and the first camera housing 540 are fixed after tilting and panning.
- FIG. 11 is a diagram illustrating an enlarged image and a cross-sectional view of the second imaging lens housing 580 illustrated in FIGS. 9 and 10.
- the second imaging lens housing 580 has a hollow cylindrical shape, and the second imaging lens assembly 22 is disposed in an opening of one side.
- the outer surface of the second imaging lens housing 580 has a corrugated bellows shape, and a fastener is connected to the outer surface of the second imaging lens housing 580.
- the fastener includes a bolt 581 and a nut 582, and a bolt 581 is inserted into an outer surface of the second imaging lens housing 580 to be fastened with the nut 582, between the bolt and the nut.
- the spring can be fitted.
- four bolts 581, nuts 582, and springs 583 may be disposed at regular intervals on the outer surface of the second imaging lens housing 580.
- the photographer can work to tighten and loosen the bolt 581 at four positions using a driver A or the like.
- the second imaging as the outer shape of the second imaging lens housing 580 changes.
- the lens assembly 22 moves or tilts and pans along the optical axis in the forward and backward directions.
- the optical axis movement of the second imaging lens assembly 22 may be performed by adjusting the positions of the third imaging lens housing 550 and the second imaging lens housing 580.
- the stereoscopic camera 500 according to the present invention may further include a linear stage 574 for optically moving the second imaging lens assembly 22.
- the linear stage 574 is not particularly limited as long as the linear stage 574 can linearly move the positions of the third imaging lens housing 550 and the second camera housing 560 in a state where the position of the second imaging lens housing 580 is fixed. Generally well known linear stages can be used.
- the stereoscopic camera 500 includes a rolling means 571 so that the second imaging lens assembly 21, the first camera housing 540, and the third imaging lens housing 530 can be tilted, panned, and rolled. ), The tilting means 572 and the panning means 573 may be further included.
- rolling refers to the rotation of the second imaging lens assembly 21, the first camera housing 540, and the third imaging lens housing 530 illustrated in FIG. 10 about the X ′ axis.
- the rolling means 571, the tilting means 572, and the panning means 573 may use, for example, the gonio stage disclosed in Korean Patent No. 1234346, but is not limited thereto.
- FIG. 12 is an exploded perspective view illustrating the Gonio stage, which is the panning, tilting and rolling means shown in FIGS. 9 and 10.
- the panning, tilting, and rolling means may use the same Gonio stage in different directions, but with reference to FIG. 12, the Gonio stage, which is a panning means 571, is described with the upper base 571G being the lower base 571B.
- the upper surface 571G faces the upper surface, and the upper base 571G curves based on the lower base 571B position.
- the lower surface of the upper base 571G is coupled with the connecting portion 571C, and the connecting portion 571C is connected with the movement control member 571A passing through the lower base 571B. Therefore, the photographer can curve the upper base 571G by manipulating the movement of the movement control member 571A.
- the connection part 571C moves along the guide part 571H formed in the lower base 571B.
- a first fixing hole 571F is formed at one side of the upper base 571G, and a second fixing hole 571D is formed at one side of the lower base 571B facing the first fixing hole 571F. It is.
- a fixing member 571E may be inserted into the first fixing hole 571F and the second fixing hole 571D to fix the position of the upper base 571G.
- the rolling means 571, the tilting means 572, and the panning means 573 may all finely curve the second imaging lens housing 590, the first camera housing 540, and the third imaging lens assembly housing 530. Although they are the same in that they can be moved, their installation directions are different.
- the rolling means 571 performs rolling by rotating the second imaging lens housing 590, the first camera housing 540, and the third imaging lens housing 530 about the X ′ axis. do.
- the tilting means 572 rotates the second imaging lens housing 590, the first camera housing 540, and the third imaging lens housing 530 based on the Y ′ axis to perform tilting.
- the panning means 573 rotates the second imaging lens housing 590, the first camera housing 540, and the third imaging lens housing 530 based on the Z ′ axis to perform panning.
- the tilting means, the panning means, and the rolling means of the second imaging lens assembly of the present invention are described as the Gonio stage in the first camera, and the second imaging lens housing 580 having an outer surface of the second camera in the bellows shape.
- the Gonio stage in the first camera
- the second imaging lens housing 580 having an outer surface of the second camera in the bellows shape.
- the three-dimensional camera of the present invention is typically a general camera for photographing images of people, insects, backgrounds, CCTV, navigation, vehicle black box, industrial inspection device, non-destructive inspection equipment, cameras for museum exhibits or merchandise display, educational Cameras, military cameras, drones, smartphones, VR / AR shooting cameras, PCs, as well as endoscopes, laparoscopes, general microscopes, surgical microscopes and the like where the subject is in close proximity to the lens of the stereoscopic camera can be used.
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- Engineering & Computer Science (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Stereoscopic And Panoramic Photography (AREA)
- Studio Devices (AREA)
Abstract
Description
구분 | 제2 결상렌즈 조립체의 회전(도 2 참고) | 기능 |
패닝 | Z축, Z'축을 중심축으로 회전 | 광축 이동, 주시각 조절 |
틸팅 | Y축, Y'축을 중심축으로 회전 | 광축 이동, 하프 미러, 제3 결상렌즈 조립체, 제1 및 제2 카메라의 위치 오차 보상 |
Claims (9)
- 제1 결상렌즈 조립체(10);제1 결상렌즈 조립체(10)를 통과한 광선 중의 일부는 반사하고 나머지는 통과시키는 하프 미러(H);하프 미러(H)에 의해 반사된 광선을 결상하는 제3 결상렌즈 조립체(31)를 포함하는 제1 카메라(30);하프 미러(H)를 통과한 광선을 결상하는 제3 결상렌즈 조립체(41)를 포함하는 제2 카메라(40); 및제1 결상렌즈 조립체(10)와 하프 미러(H) 사이의 광축 또는 하프 미러(H)와 제3 결상렌즈 조립체(31, 41) 사이의 광축에 배치되는 제2 결상렌즈 조립체(20, 21, 22)를 포함하는 단안식 입체 카메라이되,상기 제2 결상렌즈 조립체(20, 21, 22) 중 적어도 하나는 광축을 따라 이동함으로써, 제3 결상렌즈 조립체(31, 41)의 초점위치를 변화시키거나 상기 제1 카메라(30)의 상 크기와 제2 카메라(40)의 상 크기가 동일하도록 제어되는 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,상기 단안식 입체 카메라는상기 제2 결상렌즈 조립체(21, 22)가 광축을 기준으로 좌측 수직한 방향으로 연장된 연장선(Y축, Y'축)을 중심축으로 회전(이하 '틸팅'이라 함)됨에 따라 광축 정렬이 이루어지는 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,상기 단안식 입체 카메라는상기 제2 결상렌즈 조립체(21, 22)가 광축을 기준으로 하부 수직한 방향으로 연장된 연장선(Z축, Z'축)을 중심축으로 회전(이하 '패닝'이라 함)됨에 따라, 광축 정렬 및 주시각 조절이 이루어지는 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,상기 제2 결상렌즈 조립체(20)는 제1 결상렌즈 조립체(10)와 하프 미러(H) 사이에 배치되고,상기 제2 결상렌즈 조립체(20)는 배율 조절이 가능한 렌즈로써 화각을 조정하여 비네팅 현상을 최소화하는 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,상기 제2 결상렌즈 조립체(20)는상기 제1 결상렌즈 조립체(10)와 하프 미러(H) 사이에 배치되고,상기 제2 결상렌즈 조립체(21, 22)는상기 하프 미러(H)와 상기 제3 결상렌즈 조립체(31, 41)의 사이에 배치된 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,제2 결상렌즈 조립체(21, 22)는 하프 미러(H)와 제3 결상렌즈 조립체(31, 41)의 사이에 배치되고,하프 미러(H)와 제3 결상렌즈 조립체(31, 41)를 연결하는 각각의 광축이 서로 평행 또는 수직한 것을 특징으로 하는 단안식 입체 카메라.
- 제1항에 있어서,제2 결상렌즈 조립체(20, 21, 22) 또는 제3 결상렌즈 조립체(31, 41)는근접 확대 촬영이 가능한 마크로 렌즈, 망원계열의 렌즈, 아크로매틱(Achromatic) 렌즈 및 아포크로매틱(Apochromatic) 렌즈 중 적어도 하나인 것을 특징으로 하는 단안식 입체 카메라.
- 제2항 또는 제3항에 있어서,상기 단안식 입체 카메라는상기 제2 결상렌즈 조립체(20, 21, 22) 중 적어도 하나를 틸팅시키는 틸팅수단(572); 및상기 제2 결상렌즈 조립체(20, 21, 22) 중 적어도 하나를 패닝시키는 패닝수단(573)을 포함하고,상기 틸팅수단(572) 및 패닝수단(573)은일면이 오목한 곡면 형상을 갖는 하부 베이스(571B);상기 하부 베이스(571B) 상면과 마주하고, 일면이 볼록한 형상을 갖는 상부 베이스(571G); 및상기 하부 베이스(571B)의 상부에서 상기 상부 베이스(571G)를 곡면 이동시키는 이동 제어부재(571A)를 포함하는 것을 특징으로 하는 단안식 입체 카메라.
- 제2항 또는 제3항에 있어서,상기 단안식 입체 카메라는제2 결상렌즈 조립체(20, 21, 22)를 내부에 탑재하고, 광축을 정렬하는 제2 결상렌즈 하우징(580)을 더 포함하고,상기 제2 결상렌즈 하우징(580)은속이 빈 원통 형태이고, 일측의 개구부에 제2 결상렌즈 조립체(22)가 탑재되며 외면은 주름진 자바라 형태를 가지고,일정한 간격으로 이격되어 배치된 체결구가 상기 제2 결상렌즈 하우징(580)의 외면을 관통하고, 상기 체결구가 조임 또는 풀림에 의해 제2 결상렌즈 하우징의 외면 형태가 변경됨에 따라 제2 결상렌즈 조립체(20, 21, 22)가 패닝 및 틸팅이 이루어지는 것을 특징으로 하는 단안식 입체 카메라.
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CN201680020976.2A CN107431799B (zh) | 2015-12-24 | 2016-12-23 | 单眼立体相机 |
US15/555,824 US10602122B2 (en) | 2015-12-24 | 2016-12-23 | Monocular stereoscopic camera |
KR1020177024223A KR101889275B1 (ko) | 2015-12-24 | 2016-12-23 | 단안식 입체 카메라 |
EP16879425.3A EP3396950A4 (en) | 2015-12-24 | 2016-12-23 | MONOCULAR STEREOSCOPIC CAMERA |
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KR10-2015-0186872 | 2015-12-24 | ||
KR1020150186872A KR20170076517A (ko) | 2015-12-24 | 2015-12-24 | 단안식 입체 카메라 |
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WO2017111558A1 true WO2017111558A1 (ko) | 2017-06-29 |
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US (1) | US10602122B2 (ko) |
EP (1) | EP3396950A4 (ko) |
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WO (1) | WO2017111558A1 (ko) |
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KR101993621B1 (ko) * | 2018-04-27 | 2019-06-27 | (주)지엘테크 | 간섭렌즈의 초점과 광축의 곡률 중심이 동일 평면상에 위치하도록 광축을 조절하는 광학간섭계의 광축정렬장치 |
US10984287B2 (en) * | 2018-05-14 | 2021-04-20 | Panasonic Intellectual Property Management Co., Ltd. | Learning device, learning method, and storage medium |
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US10602122B2 (en) | 2020-03-24 |
CN107431799A (zh) | 2017-12-01 |
KR101889275B1 (ko) | 2018-08-21 |
KR20170076517A (ko) | 2017-07-04 |
US20180295343A1 (en) | 2018-10-11 |
EP3396950A4 (en) | 2019-08-21 |
EP3396950A1 (en) | 2018-10-31 |
CN107431799B (zh) | 2019-06-14 |
CN110231715A (zh) | 2019-09-13 |
KR20170105631A (ko) | 2017-09-19 |
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