KR101169064B1 - 3-Dimensional Photographing Device - Google Patents

Abstract

The present invention relates to a three-dimensional video recording apparatus.

The present invention is a three-dimensional video recording device for recording a three-dimensional video, the left and right images of the subject coming through the second optical axis (A2) and the third optical axis (A3) formed on the left and right around the first optical axis (A1), respectively A polarizer which emits only P waves to the first optical axis in the left image of the subject and emits only S waves to the first optical axis in the right image of the subject; And a video camera unit which polarizes P waves and S waves emitted from the polarizer to transmit P waves, reflects S waves, and stores a left image of a subject separated by P waves and a right image of a subject separated by S waves. .

As described above, the present invention configures a stereoscopic video photographing apparatus including a polarization beam splitter to polarize the left and right images of the subject with P waves and S waves, respectively, and then to the left image of the subject separated with the polarized P waves, By storing each of the images on the right side, it is possible to prevent the time difference between the left and right images of the subject. Thus, it is possible to produce accurate stereoscopic videos, to shoot a moving subject at high speed, and to maintain a clear resolution by preventing light reduction. It can be effective.

Description

Stereoscopic Video Recording Device {3-Dimensional Photographing Device}

The present invention relates to a three-dimensional video recording apparatus. More particularly, the present invention relates to a stereoscopic video recording apparatus capable of capturing left and right moving pictures of a subject without generating parallax while maintaining a resolution using one imaging device.

In general, two video cameras are required to shoot a stereoscopic video using a conventional video camera. By using the two video cameras, the left and right images of the subject are simultaneously taken by the photographer, and the two captured images are synthesized. You will produce a video.

However, since the conventional stereoscopic video production technology uses two video cameras, it is difficult to symmetrically capture the left and right images of the subject. Furthermore, when the zoom function is used, the two video cameras need to adjust the same magnification, which takes a lot of time. In addition, since the magnification of the two video cameras must be adjusted each time the zoom function is used, the workability is greatly reduced and the dizziness of the stereoscopic image is caused by the mismatch between the left and right images.

In order to solve such a problem, Patent Registration No. 10-0440983 (registered on July 09, 2004) has been disclosed, "stereoscopic video recording device," the three-dimensional video recording device using a single video camera image of the left and right side of the subject To alternately shoot and synthesize the left and right images of the photographed subject alternately to produce a three-dimensional video.

1 is a view showing a three-dimensional video recording apparatus disclosed in the registered Patent No. 10-0440983.

That is, in the conventional stereoscopic video recording apparatus, as shown in FIG. 1, the lens unit 20 coupled to the front end of the photographing lens 12 of the video camera 10 and the front end of the lens unit 20 are coupled to each other. And an adapter unit 30 for capturing and synthesizing the left and right images of the subject 1.

The lens unit 20 emits an incident image at a magnification of 1: 1 by arranging a plurality of incidence side lenses and a plurality of outgoing side lenses including relay lenses at the center thereof in a symmetrical manner.

That is, the lens unit 20 forms an entrance pupil E outside of the entrance side lens through the arrangement of the entrance side lenses and the exit side lenses.

The adapter unit 30 is formed in front of the lens unit 20, and the second optical axis A2 and the third optical axis A3 are formed at left and right sides with a predetermined distance around the optical axis A1 of the photographing lens 12. The left and right images of the subject coming through the optical axis A3 are alternately reflected to the optical axis A1 of the photographing lens 12.

The conventional stereoscopic video recording apparatus reflects the left and right images of the subject 1 coming through the second and third optical axes A2 and A3 to capture the video camera 10 through the first optical axis A1. While incident to the lens 12, the left and right images of the subject 1 are alternately photographed while being incident on the photographing lens 12 of the video camera 10 by the rotating shutter 35, and thus the photographed subject 1 ) To create a stereoscopic video by synthesizing the left and right images.

However, since the conventional stereoscopic video recording apparatus alternately photographs the left and right images of the subject through the rotating shutter 35, a time difference occurs in the case of a moving subject, and because of this time difference, the left and right images of the subject do not coincide with each other. There were difficulties and time-consuming problems.

In addition, the conventional stereoscopic video recording apparatus has a problem that it is impossible to take a stereoscopic video when a large time difference occurs when photographing a moving subject at high speed.

The present invention has been made to solve the above problems, an object of the present invention is to produce a three-dimensional video recording apparatus using a polarizing beam splitter, there is no time difference when shooting the left and right images of the subject, three-dimensional of the subject moving at high speed It is also possible to shoot a video, there is no loss of resolution, and to provide a three-dimensional video recording apparatus that can reduce the workability and convenience, time and cost accordingly.

The stereoscopic video photographing apparatus of the present invention for achieving the above object is to view the left and right images of the subject coming through the second optical axis (A2) and the third optical axis (A3) formed on the left and right sides around the first optical axis (A1). A polarizer which emits only P waves to the first optical axis in the left image of the subject and polarizes only S waves to the first optical axis in the right image of the subject after each polarization; And a video camera unit which polarizes P waves and S waves emitted from the polarizer to transmit P waves, reflects S waves, and stores a left image of a subject separated by P waves and a right image of a subject separated by S waves. It is characterized by.

The polarizer may reflect the first and second reflection mirrors reflecting the left and right images of the subject coming into the second and third optical axes A2 and A3 and the left image of the subject reflected by the first reflection mirror. Polarizing the third reflection mirror incident on the first optical axis and the left and right images of the subject reflected by the second and third reflection mirrors, the image on the left side of the subject transmits only P-waves and is incident on the first optical axis A1. The image on the right side includes a first polarizing beam splitter which reflects only the S-wave and is incident on the first optical axis A1.

A lens unit may be provided between the polarizer and the video camera to reverse the P and S waves emitted from the polarizer at a magnification of 1: 1.

The lens unit is characterized in that the incidence-side lens and the exit-side lens including a plurality of relay lenses in the center are arranged symmetrically with each other, the entrance pupil (E) is formed to the outside of the incident side lens.

The video camera unit includes a zoom lens that enlarges or reduces the P waves and the S waves emitted from the polarizer, and polarizes the P waves and S waves coming through the first optical axis A1 of the zoom lens to transmit P waves, and S A second polarizing beam splitter for reflecting, a first storage member storing P waves transmitted through the second polarizing beam splitter, and a second storage member storing S waves reflected through the second polarizing beam splitter Characterized in that.

Further comprising a quarter phase difference plate to remove the polarization component of the reflected light between the second reflection mirror and the first polarization beam splitter or between the third reflection mirror and the first polarization beam splitter to match the left and right images of the subject. Characterized in that.

The first polarizing beam splitter or the second polarizing beam splitter may have a cubic shape in which prism having a triangular cross section is bonded to each other, and further comprising a polarizing plate inserted between the first polarizing beam splitter and the second polarizing beam splitter. It is done.

The first polarizing beam splitter or the second polarizing beam splitter is a cubic shape in which prisms having a triangular cross section are bonded to each other, and further includes a polarizing plate attached to light incident surfaces of the first polarizing beam splitter and the second polarizing beam splitter, respectively. It is characterized by including.

As described above, the present invention configures a stereoscopic video photographing apparatus including a polarization beam splitter to polarize the left and right images of the subject with P waves and S waves, respectively, and then to the left image of the subject separated with the polarized P waves, By storing each of the images on the right side, it is possible to prevent the time difference between the left and right images of the subject. Thus, it is possible to produce accurate stereoscopic videos, to shoot a moving subject at high speed, and to maintain a clear resolution by preventing light reduction. It can be effective.

Hereinafter, a stereoscopic video recording apparatus according to the present invention will be described in detail with reference to FIG. 2.

The stereoscopic video photographing apparatus of the present invention polarizes the left and right images of the subject 1 coming into the second and third optical axes A2 and A3 with P waves and S waves using the polarizer 100, and polarizes P. Waves and S waves are incident on the lens unit 200 while being combined through the first optical axis, and are reversed at a magnification of 1: 1. The inverted P and S waves are incident on the video camera unit 300 to be separated into P and S waves. It is polarized again, and the polarized P and S waves are stored in each of the three-dimensional video recording technology.

As shown in FIG. 2, the stereoscopic video photographing apparatus according to the present invention receives the subject 1 through the second optical axis A2 and the third optical axis A3 formed on the left and right sides of the first optical axis A1. After polarizing the left and right images of the respective polarization unit 100 emits only P-waves to the first optical axis (A1) in the left image of the subject (1), and emits only S-waves to the first optical axis (A1) in the right image of the subject (1) ), A lens unit 200 for emitting P waves and S waves emitted from the polarizing unit 100 to the first optical axis A1 at a magnification of 1: 1, and P emitted from the lens unit 200. And a video camera unit 300 for polarizing the wave and the S wave to transmit the P wave, reflecting the S wave, and storing the left image of the subject separated by the P wave and the right image of the subject separated by the S wave.

The polarizer 100 reflects the left and right images of the subject 1 coming into the second and third optical axes A2 and A3 and enters the first optical axis A1 in a horizontal state when viewed in FIG. 3. First and second reflecting mirrors 110 and 120 and the left image of the subject 1 reflected by the first reflecting mirror 110 to reflect and enter a state perpendicular to the first optical axis A1. Polarizing the left and right images of the subject reflected by the third reflection mirror 130 and the second and third reflection mirrors 120 and 130, respectively, are incident vertically along the first optical axis A1. The left image of the subject 1 is transmitted through only the first optical axis A1 by transmitting only the P wave, and the right image of the subject 1 incident horizontally with the first optical axis A1 reflects only the S wave to reflect the first optical axis ( A first polarizing beam splitter 140 is emitted through A1).

The reason why the first and third reflection mirrors 110 and 130 are incident to the left image of the subject 1 perpendicularly to the first polarization beam splitter 140 is based on the second reflection mirror 120. This is to match the size of the left and right images of the subject 1 by maintaining the same incidence distance with the right image of the subject 1 incident horizontally on the polarization beam splitter 140.

That is, the polarizer 100 includes the first polarization beam splitter 140 on the first optical axis A1 and is positioned on the first polarization beam splitter 140. The third reflecting mirror 130 is inclined, the first reflecting mirror 110 is inclined in the second optical axis A2 located on the left side of the third reflecting mirror 130, the first polarization beam The second reflection mirror 120 is inclined on the third optical axis A3 positioned on the right side of the splitter 140.

In other words, the polarizer 100 may sequentially reflect the left image of the subject 1 that enters the second optical axis A2 through the first reflection mirror 110 and the third reflection mirror 130, thereby causing the first optical axis ( While incident on the first polarization beam splitter 140 at an angle parallel to A1), only P waves are emitted through the first optical axis A1.

The right image of the subject 1 coming into the third optical axis A3 is reflected through the second reflection mirror 120 and is incident on the first polarizing beam splitter 140 at an angle perpendicular to the first optical axis A1. Only S waves are emitted through the first optical axis A1.

The lens unit 200 is polarized by the polarizer 100 to invert the P and S waves emitted through the first optical axis A1 and at the same time, to form an entrance pupil E externally. The incident side lens and the exit side lens including a plurality of relay lenses are arranged symmetrically with each other, and the incident pupil point E is formed outside the incident side lens.

Here, the lens unit 200 has the same configuration and function as the lens unit 20 of the stereoscopic video recording apparatus of Patent Registration No. 10-0440983 (2004.07.09) described in the prior art, and thus, detailed description thereof will be omitted. do.

The video camera unit 300 polarizes the P and S waves reversed by the lens unit 200 again to separate the P and S waves, and the left image of the subject separated by the P wave and the right image of the subject separated by the S wave. And a zoom lens 310 for enlarging or reducing the P wave and the S wave exiting the first optical axis A1 of the lens unit 200, and the first optical axis of the zoom lens 310. A second polarized beam splitter 320 for polarizing P waves and S waves coming through A1) to transmit P waves and reflecting S waves, and P-waves transmitted through the second polarized beam splitter 320. A first storage member 330 for storing a left image and a second storage member 340 for storing a right image of a subject separated by S waves reflected by the second polarization beam splitter 320.

That is, the video camera unit 300 transmits the P wave and the S wave exiting the first optical axis A1 of the lens unit 200 and the zoom lens 310 to the second polarization beam splitter 320 and transmit the P wave as it is. And stored in the first storage member 330, and the S wave is reflected and stored in the second storage member 340.

Accordingly, the video camera unit 300 separates the P and S waves, i.e., the left and right images of the subject, into the second polarizing beam splitter 320 and stores them in the first and second storage members 330 and 340, respectively. As a result, a time difference between the left and right images of the subject does not occur, so that a stereoscopic video of a subject moving at high speed can be taken, and a clear stereoscopic video can be taken without loss of resolution.

On the other hand, the polarizer 100 is provided with a phase difference plate to remove the polarization component of the reflected light included in the left and right images of the subject coming into the second and third optical axis (A2) (A3), more preferably The 1/4 phase difference plate 150 is installed.

The quarter retardation plate 150 is installed between the second reflection mirror 120 and the first polarization beam splitter 140 or the third reflection mirror 130 and the first polarization beam splitter 140, respectively. Included in the left and right images of the subject 1 incident on the first polarization beam splitter 140 through the second reflection mirror 120 and the third reflection mirror 130 through the quarter phase plate 150. By removing the polarization component of the reflected light, it is possible to prevent inconsistency between the left and right images of the subject 1 due to the reflected light.

Meanwhile, the first and second polarization beam splitters 140 and 320 are optical devices used to decompose light into two or more images. The polarizing beam splitters 140 and 320 are formed in a cube shape, and two prisms having a triangular cross section are manufactured in a manner in which resins are bonded to each other in a state where a polarizing plate is inserted into an adhesive surface thereof. Alternatively, the two prisms may be bonded to the resin, and the polarizers may be attached to the light incident surfaces of the two prisms. When the polarizers are attached to the light incident surfaces of the two prisms, the light intensity is reduced to 50%. However, the effect of separating the left and right images of the subject 1 into P waves and S waves is the same.

Hereinafter, the operation state of the stereoscopic video recording apparatus of the present invention having such a configuration will be described.

Referring to the arrows shown in FIG. 2, when the subject 1 is photographed by the 3D video photographing apparatus, the left and right sides of the subject 1 that enter the second and third optical axes A2 and A3 of the 3D video photographing apparatus. The image is reflected in the direction of the first optical axis A1 by the first and second reflecting mirrors 110 and 120, and the left image of the subject 1 reflected by the first reflecting mirror 110 is a third image. The object 1 reflected back by the reflective mirror 130 and incident on the first polarizing beam splitter 140 along the first optical axis A1 while being reflected by the second reflective mirror 120. The right image of is incident on the first polarizing beam splitter 140 in a horizontal state.

Here, the left and right images of the subject 1 incident on the first polarization beam splitter 140 through the second and third reflection mirrors 120 and 130 pass through the 1/4 retardation plate 150, respectively. Accordingly, by removing the polarization component of the reflected light (light reflected on the building, light reflected on the glass or light reflected by the water) included in the left and right images of the subject 1, the left and right of the subject 1 The identity of the image can be maintained.

In addition, the left image of the subject 1 incident in a state perpendicular to the first polarization beam splitter 140 is transmitted through the P-wave and is incident on the lens unit 200 along the first optical axis A1. The right image of the subject 1 incident on the polarization beam splitter 140 in a horizontal state is reflected by only the S-wave and is incident on the lens unit 200 along the first optical axis A1.

In this case, the P-wave (the left image of the subject) and the S-wave (the right image of the subject) coexist along the first optical axis A1.

That is, the P and S waves incident on the lens unit 200 are inverted in a 1: 1 ratio, and the inverted P and S waves are inverted to the zoom lens 310 of the video camera unit 300 along the first optical axis A1. Incident.

P-waves and S-waves incident along the first optical axis A1 of the zoom lens 310 pass through the zoom lens 310, and when the zoom lens 310 is adjusted, the incident P-waves and S-waves are simultaneously enlarged or It can be reduced, and thus work efficiency can be obtained.

As described above, the P wave and the S wave passing through the first optical axis A1 of the zoom lens 310 are incident on the second polarization beam splitter 320, and the P wave is transmitted and the S wave is reflected.

The left image of the subject separated by the transmitted P wave is stored in the first storage member 330, and the right image of the subject separated by the reflected S wave is stored in the second storage member 340.

As described above, since the left and right images of the subject separated by the P wave and the S wave stored in the first and second storage members 330 and 340 respectively store an image having the same time and the same size, no time difference occurs. It is easy to produce a stereoscopic video by synthesizing the left and right images of the subject separated by the P wave and the S wave, and it is also possible to shoot a moving subject at high speed and obtain a lossless resolution.

1 is a view showing a conventional stereoscopic video recording apparatus.

2 is a view showing a three-dimensional video recording apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

100: polarizer 110: first reflection mirror

120: second reflection mirror 130: third reflection mirror

140: first polarization beam splitter 150: phase difference plate

200: lens unit 300: video camera unit

310: zoom lens 320: second polarization beam splitter

330: first storage member 340: second storage member

Claims (8)

As a stereoscopic video recording device for recording stereoscopic video, After polarizing the left and right images of the subject coming in through the second and third optical axes A2 and A3 formed on the left and right sides of the first optical axis A1, only the P wave is emitted to the first optical axis in the left image of the subject. A polarizer which emits only S-waves to the first optical axis in the right image of the subject; And a video camera unit for polarizing P and S waves emitted from the polarizer to transmit P waves and reflecting S waves, and storing left images of a subject separated by P waves and right images of a subject separated by S waves. The video camera unit includes a zoom lens that enlarges or reduces the P waves and the S waves emitted from the polarizer, and polarizes the P waves and S waves coming through the first optical axis A1 of the zoom lens to transmit P waves, and S A second polarizing beam splitter for reflecting, a first storage member storing P waves transmitted through the second polarizing beam splitter, and a second storage member storing S waves reflected through the second polarizing beam splitter And storing left and right images of a subject separated by P and S waves respectively stored in the first and second storage members as images having the same time and the same size. The method according to claim 1, The polarizing unit, First and second reflection mirrors reflecting left and right images of a subject coming into the second and third optical axes A2 and A3, A third reflection mirror reflecting an image of the left side of the subject reflected by the first reflection mirror to be incident on the first optical axis, and Polarizing the left and right images of the subject reflected by the second and third reflection mirrors, the left image of the subject transmits only P waves, and enters the first optical axis A1, and the right image of the subject reflects only S waves, thereby reflecting the first optical axis ( And a first polarizing beam splitter incident on A1). The method according to claim 1, And a lens unit between the polarizer and the video camera to reverse the P and S waves emitted from the polarizer at a magnification of 1: 1. The method of claim 3, The lens unit is characterized in that the incidence-side lens and the exit-side lens including a plurality of relay lenses in the center are arranged symmetrically with each other, the entrance pupil (E) is formed on the outside of the incident side lens. delete The method according to claim 1, Further comprising a quarter phase difference plate to remove the polarization component of the reflected light between the second reflection mirror and the first polarization beam splitter or between the third reflection mirror and the first polarization beam splitter to match the left and right images of the subject. Stereoscopic video recording device characterized in that. The method according to claim 2 or 4, The first polarizing beam splitter or the second polarizing beam splitter is a cube in which prisms having a triangular cross section are bonded to each other, And a polarizing plate inserted between the first polarizing beam splitter and the second polarizing beam splitter. The method according to claim 2 or 4, The first polarizing beam splitter or the second polarizing beam splitter is a cube in which prisms having a triangular cross section are bonded to each other, And a polarizing plate attached to light incident surfaces of the first polarizing beam splitter and the second polarizing beam splitter, respectively.

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