KR20140087449A

KR20140087449A - 3D Image Rig For a Camera

Info

Publication number: KR20140087449A
Application number: KR1020120157781A
Authority: KR
Inventors: 최해용
Original assignee: 최해용
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2014-07-09

Abstract

In a 3D rig device for shooting a 3D image using a general camera
A first camera fixing device and a second camera fixing device configured such that the photographing lenses of the two cameras are mounted in a left-right symmetrical counter-
The first camera fixing device and the second camera fixing device are provided with first and second reflectors formed at mutually separated angles with respect to the photographing direction at apical angles and
And first and second observation reflectors provided at a rear end of the first camera fixing device and the second camera fixing device, respectively,
It is possible to configure the components on the first moving table and the second moving table so that close-up stereoscopic photography of at least 1/10 of the conventional photographing distance is possible, and the brightness can be made to be twice as high as that of the conventional translucent screen structure, A stereoscopic image mounting rig for a camera

Description

3D Image Rig For a Camera}

The present invention relates to a camera for photographing a stereoscopic image using a general camera

And more particularly, to a stereoscopic imaging rig for a camera capable of performing close-up stereoscopic photography with a general camera.

There are many objects to be enlarged around us, such as small electronic components, insects, crystals of minerals, precious metals, petal structure, product surface, cells,

The smaller the object, the closer the subject is taken, that is, the shorter the focal length, the larger the magnification of the subject

However, in three-dimensional close-up photography, the distance between two cameras is very important, and therefore,

That is, the stereoscopic image capturing uses the two cameras of the same camera to use a left-eye camera for capturing a visual image of the left eye and a right-eye camera for capturing a visual image of the right eye.

Also, as for the stereoscopic image, as shown in Fig. 5, f, which is the interval between the left eye (yl) and the right eye (yr) of a person, is generally 6.5 cm.

However, the distance that humans most perceive stereoscopically is the objects within a distance of 10 m that d has at a distance of 1 m as shown in Fig. 5 (c)

That is, as shown in FIG. 5, a natural three-dimensional feeling can be felt at an angle of about 7 degrees made by f = 6,5 cm and c = 50 cm and between angles b = 0 and 35 degrees formed by f =

Therefore, the photographing interval b of the left image photographing camera and the right image photographing camera should be within the above-mentioned angle with respect to the photographing distance but within about 7 degrees in the close-up photographing

In addition, the angle c of the distance e at which the object to be imaged is 30 m or more is very small,

The size of the left and right SLR cameras is about 10-15cm. In the case of a camera, the size of the left and right sides of the camera is more than 10 cm,

A known Korean Patent Application No. 10-2010-0101446 (Oct. 18, 2010)

Or 20-2008-0017094 Hona (December 24, 2008)

The techniques of Japanese Patent Application Laid-Open No. 2005-24629 (2005.1.27) have a limitation in shortening the shooting interval f of the camera by simply arranging two cameras horizontally

Conventionally, as shown in FIG. 6 (a), the first and second cameras are 10 cm wide, respectively. Even if the second photographing lenses 2a and 2b are 1 cm, The distance between the first and second photographing lenses 2a and 2b can not be shortened to less than 10 cm which is the width of the first and second cameras,

That is, the distance b between the left and right camera lenses is 10 cm to 15 cm

5, the photographing distance of the effective solid angle of 7 degrees -0, 35 degrees is 15 m at 1,5 m

Therefore, in the conventional three-dimensional camera rig, it is very difficult to perform three-dimensional close-

For example, as shown in Fig. 5, in order to maintain the angle of 7 degrees of d due to the lens interval b of the left and right cameras in 30 cm close-up photographing, the lens interval b of the left and right cameras should be close to about 4 cm.

However, in this case, since the length of the camera must be less than 4 cm, it is impossible to perform close-up photography with a conventional stereoscopic imaging rig apparatus using a general camera

In order to solve this problem, when the two cameras are constituted by left and right inclination by the above-mentioned leig unit, the optical axis (c) of the photographing lens is different, so that the center image is correct but the crosstalk phenomenon of the surrounding image is severe

In order to solve the above-mentioned problem, as shown in FIG. 8, there is provided a translucent mirror having a translucent mirror which reflects 50% at a 45 ° angle and 50% at a 45 ° angle between the left and right cameras, A structure is known in which the distance between the photographing lenses of the camera is minimized

However, in this structure, the amount of light incident on each of the left and right cameras is reduced to 50% due to translucent light, and the incidence and reflection amounts are limited to 50% and 50%, respectively. But it was not practical because it would cause the price of the structure to rise.

Therefore, the conventional techniques have a limitation in reducing the performance of the camera or shortening the interval between the left and right photographing lenses.

KR Application No. 10-2010-0101446 KR Application No. 20-2008-0017094 JP Publication No. 2005-24629

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an image pickup apparatus capable of close-up stereoscopic photography while maintaining the performance of general cameras, SLR cameras,

Close-up is possible without translucent light.

When taking close-up stereoscopic images, the user can shoot two left and right images while watching the two left and right eye images,

And a mounting structure for a stereoscopic image taking for a camera which is simple in structure and light in weight and easy to carry.

DSLR, a first camera of the same model as the first camera, and a first photographing lens and a second photographing lens of two cameras of the second camera in the case of the DSLR and the compact camera are provided on the front of the first photographing lens and the second photographing lens Each of the first and second cameras has a first mirror and a second mirror. The first mirror and the second mirror are disposed on the front surface of the monitor. And a second observation reflector

The first and second photographing reflectors and the first and second observing reflectors are all made up of a reflecting mirror constituted of a reflective surface on a glass-based surface

The first camera, the first reflector, and the first observation mirror are configured as the left movable frame, and the second camera, the second mirror, and the second observation mirror are configured as the right movable frame,

That is, the first camera fixing device and the second camera fixing device configured to configure the photographing lenses of the two cameras with the counter-adaptive structure and the left and right symmetrical structure,

As shown in FIG. 1, a point a in the direction of a photographing target 9 is defined as a vertex angle in front of the first camera fixing device and the front surface of the second camera fixing device, And first and second reflectors configured in a separated form

And first and second observation mirrors provided at a rear end of the first camera fixing device and the second camera fixing device in a rectangular shape

The first camera fixing device, the first reflector, and the first observation reflector are configured as one system to constitute a first movable stage

The second camera fixing device, the second reflector, and the second observing reflector are constituted as one system to constitute a second moving stage

The first moving band and the second moving band are separated from each other and configured so that one moving base is shifted in the left and right directions either in the right or left direction or in the first moving band and the second moving band

And a first camera and a second camera mounted on the first camera fixing device and the second camera fixing device

The first camera fixing device and the second camera fixing device are provided with a position adjusting device capable of adjusting the up-down, front-back, and left-right position of the camera, thereby providing a structure capable of mounting any camera or camcorder

A structure in which a first camcorder and a second camcorder can be mounted instead of the first camera and the second camera

In addition, the first observation reflector and the second observation reflector are provided with a photographing reference line on either one of the front and rear sides to adjust the horizontal position and the center of the photographing object respectively captured by the two cameras, thereby significantly reducing the cross talk phenomenon of the 3D image Suggest a structure for

In order to solve the above problems, the present invention can reduce the distance between the first photographing lens and the second photographing lens to the size of the photographing lens by using a general camera and a DSLR camera, Available

When taking close-up stereoscopic images, the left and right two shooting conditions can be photographed while watching the shooting conditions of the two left and right eye images,

Loss of light incident through the reflector is minimized, so that dark shots can be taken twice or more than before

Instead of lowering the brightness of the camera used and using a translucent mirror, the front mirror is used to maintain the brightness uniformity of the left and right cameras.

The crosstalk phenomenon of the 3D image can be remarkably reduced by aligning the horizontal and optical axes of the object to be imaged viewed by the photographing lens of the left and right cameras at the time of photographing

It is simple and light in structure, easy to carry, and it is a mounting structure for stereoscopic images that can capture three-dimensional images at close range of any type of camera.

FIG. 1 (a) is a block diagram of the present invention
Fig. 1 (b) is an explanatory diagram
Fig. 2 is a schematic diagram of the present invention
FIG. 3 (a) is a block diagram of the configuration of the present invention
FIG. 3 (b) is a side view of the configuration of the present invention
Fig. 4 is a diagram showing the left and right inner space and the solid angle explanatory diagram
Fig. 5 is a block diagram of the configuration when the camcorder is mounted
FIG. 6 is a diagram illustrating left and right image optical axis explanations
Fig. 7 (a) is an explanatory view of the interval of the camera photographing lens of the conventional three-dimensional rig
Fig. 7 (b) is an explanatory view of the camera photographing lens interval comparison according to the present invention
Fig. 8 is an explanatory view of a stereoscopic rig apparatus using a translucent mirror
BRIEF DESCRIPTION OF THE DRAWINGS
1a, a first camera 1b, a second camera 2a, a first photographing lens 2b,
3a, a first reflector 3b, a second reflector 4a, a first observation mirror 4b,
5a, a first camera fixing base 5b, a second camera fixing base
6a, a first moving base 6b,
7, a movement adjusting device 8, a position adjusting device 9, a shooting target
10a, a first camcorder 10b, a second camcorder 11. A pedestal,
12a, a left horizontal photographing reference line 12b, a right horizontal photographing reference line

The camera can take an enlarged image of the subject in proportion to the amount of close-up photography

The structure of the present invention is shown in FIGS. 1 and 2

The first camera fixing bracket 5a and the second camera fixing bracket 5b are provided with first and second left and right images for three-dimensional photographing. The second cameras 1a and 1b are mounted on the first and second cameras 1a and 1b, respectively, and the photographing lenses of the first and second cameras 1a and 1b face each other,

For convenience of explanation, the first reflector 3a and the second reflector 3b are separated from each other in a square shape at the position of the vertex (a) of the symmetrical structure according to the present invention. And

A first reflector 3a is provided at a front end of a first camera 1a photographing from right to left in a rectangular shape with respect to the photographing direction

And a first viewing mirror 4a in a direction opposite to the first reflecting mirror 3a on the basis of a monitor screen of the rear end of the first camera 1a.

A second reflector 3b is provided on the front end of the second camera 1b, which photographs from left to right,

(4b) in a square direction opposite to the second reflector (3b) on the basis of a monitor screen of a rear end of the second camera (1b)

It is preferable that the first and second reflectors 3a and 3b use a surface reflector formed on the surface of the reflecting mirror made of a glass material so as to prevent the sharpness and the double image of the image

When the reflective surface is formed on the back surface of the glass, the reflective surface of the glass surface and the reflective surface

Reflection occurs due to reflection surface

However, since the surface of the surface reflector is very weak, it is also possible to use the back surface of the first and second observation lenses 4a and 4b,

And The second camera 1a. 1b includes a first camera fixing base 5a and a second camera fixing base 5b, which can be mounted and fixed so that two cameras of the same model are mounted in a pair among various cameras.

In this way, the first moving base 6a is provided with a first camera 1a, a first camera fixing base 5a, a first reflecting mirror 3a formed squarely in front of the first photographing lens 2a in front of the first camera, 1 camera 1a has a first observation mirror 4a in the direction opposite to the first reflector 3a in the rear of the monitor.

A second camera 1b mounted on the second camera fixing base 5b and a second camera 1b mounted on the upper end of the second moving base 6b in a rectangular shape in front of the second photographing lens 2b, A second reflector 3b and a second observation light 4b in the direction opposite to the first reflector 3a on the rear side of the monitor of the second camera 1b on the rear side of the second camera 1b.

For example, the first and second moving belts 6a and 6b are provided at the upper and lower ends, respectively. At the upper ends of the first and second moving belts 6a and 6b, a first reflector 3a, 1 camera 1a, and a first observation light 4a

The second moving table 6b is provided with a second camera fixing table 5a for fixing the second reflector 3b, the second camera 1b or the second camera 1b.

The first and second moving bases 6a and 6b have a structure in which the pedestal 11 is disposed at the lower portion and the first and second moving bases 6a and 6b are moved at the upper end.

As described above, the first moving base 6a and the second moving base 6b are configured to move in both left and right directions in mutually symmetrical directions by various known methods.

In the present invention, the descriptions of the forward, backward, downward, leftward and rightward movement directions of the constituent components are all described with reference to the left and right horizontal directions.

In this case, only one of the first moving base 6a and the second moving base 6b is moved left or right, or the first moving base 6a and the second moving base 6b are moved simultaneously to the left and right However, various methods known in the art can be used and the method is not limited to a specific method.

The present invention can be applied to the first and second cameras 1a and 1b of the first and second camera fixing brackets 5a and 5b as shown in FIG. The second photographing lens 2b is mounted on the first and second cameras 1a and 1b while facing each other and the close distance is determined while watching the monitors of the first and second cameras 1a and 1b, (B) between the first photographing lens 2a and the second photographing lens 2b is set to be equal to or less than 0 degrees and less than or equal to 35 degrees with respect to the close distance, It is proper to set the distance of the close-up photographing distance b to 6,5 cm: 50 cm-10 m, that is, a ratio of about 1: 7-1: 140 or less, but the close-up photographing distance is bx 7

That is, when the close-up distance is 25Cm, the value of b is 3,25 cm

However, when the interval b between the first photographing lens 2a and the second photographing lens 2b is less than 7 degrees and less than 0 degrees and less than 35 degrees, respectively, relative to the close-up photographing distance, It is possible to minimize the interval b according to the expression of the photographer by setting the angle to be equal to or greater than 15 degrees and taking the maximum value in a range in which the crosstalk does not appear

The structure of the present invention has the effect of enlarging the range of stereoscopic photographing about 18 times according to the intention of the photographer

In order to facilitate understanding, the above example is described only as a practical example, but it can be set differently, for example, by expressing the three-dimensional feeling by shortening the b in accordance with the artistic sense of the individual and the intention to express it

When the interval b is set as described above, the horizontal optical axis c of the object to be imaged 9 is adjusted as shown in FIG. 1 (b) while viewing the left and right horizontal imaging reference lines 12a and 12b of FIG. Adjust and match, then shoot,

At this time, if necessary, the optical axis (c) of the photographing lens can be aligned by adjusting the front, back, left, right, and bottom of the first and second cameras 1a and 1b using the position adjusting device 8

Such a structure should accurately observe the images of the first and second cameras 1a and 1b, which are photographed by the photographer, and the left and right images of the first and second cameras 1a and 1b should appear unchanged, It is possible to shoot according to a random composition.

That is, as shown in FIG. 2, the left and right sides are arranged symmetrically with respect to a vertex a, and the left and right sides are separated based on a vertex a.

In a range in which crosstalk does not occur at an angle of about 40 ° to about 50 ° to both the left and right sides with respect to the corner point (a).

40 ° or less 50 ° or more At the time of day and time, left and right focus deviations occur in close-up photography, resulting in a cross talk phenomenon of a stereoscopic image.

For example, a compact camera has a small aperture of up to 1 cm. The interval between the first and second photographing lenses 2a and 2b of the second cameras 1a and 1b can be reduced to 1 cm and the first and second reflectors 3a and 3b are also small So that the spacing can be reduced to 1 cm

When using the first and second cameras having the first and second photographing lenses 2a and 2b of 1 cm in size, close-up stereoscopic photography can be performed even at an imaging distance of 8 cm.

This enables close-up photography of about 18 times the conventional shortest photographing distance of 1,5 m

In order to take a good picture, the photographer needs to look at the image coming through the lens correctly.

In other words, DSLR and compact camera are the cameras that can be photographed while watching the subject and the shooting condition on the monitor.

As shown in FIGS. 2 and 5, for example, the object 9 to be displayed in the left and right directions by the arrows L and R is refracted and reflected at 90 degrees by the first reflector 3a, The photographed object 9, which is incident and photographed and incident, is refracted and reflected at 90 degrees by the first camera 1a, and left and right are seen as L and R shapes.

The object 9 to be photographed with the left and right images L and R is refracted and reflected at 90 degrees by the second reflector 3b and is incident on the second camera 2b and the object 9 to be shot is incident on the second camera 2b ), Which is refracted and reflected at an angle of about 90 deg. By the second observation reflector 4b, so that the left and right images are seen as L and R shapes.

That is, the monitor screens of the first and second cameras 1a and 1b viewed by the first observation mirror 4a and the second observation mirror 4b are images in which L and R in the left and right directions are the same direction.

6) between the first and second observation surfaces (4a, 4b) or the first and second observation surfaces (4a, 4b) of the first and second cameras (1a, 1b) (12) can be formed on a transparent material.

This aligns the left image of FIG. 6 (a) taken by the first photographing lens 2a and viewed by the first observation mirror 4a with the left horizontal photographing reference line 12a,

The right image of FIG. 6 (b) taken by the second photographing lens 2b and viewed by the second observation mirror 4b on the monitor is aligned with the right horizontal photographing reference line 12b,

In order to align the center of the left and right horizontal reference lines 12a and 12b with the center of the left and right horizontal images,

The optical axes of the first and second photographing lenses 2a and 2b of the first and second cameras 1a and 1b or the first and second camcorders 10a and 10b constituted by the same- Be a standard

If the center of the left and right images of the object 9 to be photographed is not photographed in accordance with the left, right, and horizontal directions of the left and right images, a cross talk phenomenon occurs in the subsequent stereoscopic image appreciation, And the optical axes of the first and second photographing lenses 2a and 2b constituted by the opposing structures of the two cameras 1a and 1b are made to coincide with each other

The present invention can be applied to a camcorder as it is

That is, as shown in FIG. When the first and second camcorders 10a and 10b are replaced in place of the second cameras 1a and 1b, the first and second camcorders 10a and 10b, such as the first and second cameras 1a and 1b, The close proximity of the first and second lens groups 2a and 2b can be brought close to the size of the photographing lens diameter. The photographed image input to the second camcorder 10a. 10b can be photographed while viewing a right image which is not changed in the right and left through the first and second observation scopes 4a and 4b as shown in FIG. 5

7, the camera mounted on the camera moves up and down, the high and low stages 8a, and the front and rear of the camera are moved forward and backward. The position adjusting device 8 having both the moving base 8b and the left and right moving base 8c which is moved to the left and the right is attached to the first and second camera fixing bars 5a and 5b Any camera such as various sizes and various models can be mounted so that the optical axes c of the first photographing lens 2a and the second photographing lens 2b can be matched with each other

The position adjusting device 8 adjusts the optical axis (c) of the first photographing lens 2a and the second photographing lens 2b in an aligned manner using various conventionally known structures

The camera can be moved forward, backward, leftward, rightward, upward, downward, or the like so that the camera can be matched. However, the present invention is not limited to the structure shown in FIG. 8

The first and second movable bases (6a, 6b) The grooves of the second camera fixing bars 5a and 5b are formed in an elliptical shape or a straight groove in the forward and backward directions so that the mounted cameras can be fixedly moved forward and backward.

The first and second reflectors 3a and 3b and the first and second observation mirrors 4a and 4b are also rotated in the fixing grooves of the first and second moving tables 6a and 6b to adjust the angle of each square Or the fixing grooves may be elongated in elliptical shape, or in the left, right, front and back directions,

The stereoscopic image should be aligned with the optical axis c in the horizontal direction of the first photographing lens 2a and the second photographing lens 2b as shown in FIG. 1 (b) in order to reduce the crosstalk phenomenon as the close-

Therefore, the optical axis (c) can be adjusted by the position adjusting device 8

In the present invention, the distance between the left and right cameras is reduced to the diameter of the first and second photographing lenses 2a and 2b, as shown in FIG. 6 (b) And

As shown in FIGS. 1, 3 and 4, the left and right images of the photographed object 9 can be closely observed and adjusted at a glance

Easy to carry and easy to use.

Also, according to the first 3D shooting league, Since the second camera shooting interval can be reduced to 1/18, it is possible to perform close-up and enlarged shooting of the 3D photographing up to 18 times as compared with the conventional method. The same logic can be applied to the camcorder and the photographing camera

In addition, since the subject to be photographed is not a conventional translucent mirror but a reflector, it can be photographed in its original brightness without decreasing the brightness. Therefore, it is possible to capture a small object such as an insect, an appearance of a plant or an enlarged stereoscopic image of a tissue, Alternatively, a wide variety of close-up stereoscopic images can be taken with two known ordinary cameras and camcorders.

Claims

In a 3D rig device for shooting a 3D image using a general camera
A first camera fixing device and a second camera fixing device configured such that the photographing lenses of the two cameras are mounted in a left-right symmetrical counter-planar direction structure;
First and second reflectors, each of which is formed at an oblique angle with respect to a photographing direction at an apex angle between the first camera fixing device and the second camera fixing device,
First and second observation reflectors provided at a rear end of the first camera fixing device and the second camera fixing device, respectively;
And
A first moving base on which the first camera fixing device, the first reflecting mirror and the first viewing mirror are constituted by one system; Wow
A second moving base on which the second camera fixing device, the second reflector, and the second observation reflector are constituted by one system; end
The stereoscopic image mounting rig for a camera, which is characterized in that it is separately moved left and right,

The camera according to claim 1, wherein the first camera fixing bracket and the second camera fixing bracket are provided with a position adjusting device capable of adjusting the positions of the first and second cameras up, down, left, and right respectively Stereoscopic image mounting league for cameras

5. The reflector according to any one of claims 1 to 4,
And the left and right imaging reference lines are provided on one of the front and rear sides of the second observation reflecting mirror,

The stereoscopic image mounting rig according to any one of claims 1 to 3, characterized in that the first camera fixing device and the second camera fixing device are equipped with a first camera and a second camera,

The stereoscopic image mounting rig according to any one of claims 1 to 3, characterized in that the first camcorder and the second camcorder are mounted,