CN115914608A

CN115914608A - Double-objective single-image-pickup stereoscopic image photographic device

Info

Publication number: CN115914608A
Application number: CN202111112574.4A
Authority: CN
Inventors: 范继良
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2023-04-04

Abstract

The invention discloses a double-objective single-image-pickup stereoscopic image photographic device, which comprises a direct-current power supply for supplying direct current and a double-objective single-image-pickup lens assembly, wherein the double-objective single-image-pickup lens assembly comprises a left image pickup structure, a right image pickup structure and a CCD image pickup unit, and the left image pickup structure and the right image pickup structure have the same structure and are both liquid crystal glass structures; the power supply control unit controls the right image pickup structure to be electrically conducted with the direct current power supply, and the photographed object obtains an image through the left image pickup structure and forms a left image in the CCD image pickup unit; the power supply control unit controls the left image pickup structure to be electrically conducted with the direct-current power supply, and the photographed object obtains an image through the right image pickup structure and forms a right image in the CCD image pickup unit; the processing unit receives the left image and the right image formed by the CCD image pickup unit, performs superposition processing on the left image and the right image to form a three-dimensional image, and displays the three-dimensional image in the display unit; the invention adopts a structure of combining double objective lenses with a single image pickup, so that the structure is simple and the three-dimensional effect of the shot object can be accurately reflected.

Description

Double-objective single-image-pickup stereoscopic image photographic device

Technical Field

The present invention relates to an image capturing device, and more particularly, to an image capturing device capable of displaying a stereoscopic image using a lens with a dual-objective lens and a single image capturing structure.

Background

Stereoscopic imaging can be classified into two main categories, static scene shooting and dynamic scene shooting. In the shooting of the static scenery, only one camera is needed to be used, one image is shot at a certain position angle, then the camera is moved in parallel for a certain distance, and then the other image is shot, so that a group of three-dimensional images with parallax is obtained. When shooting a dynamic scene, a special stereo camera (such as a double-lens camera) is required to be used, or two cameras are required to shoot two images at one time; the existing stereoscopic imaging shooting is generally obtained by shooting dynamic scenery through a dual-lens camera, the dual-lens camera adopts two parallel lenses to capture images simultaneously, when a left image and a right image respectively enter a left eye and a right eye, a stereoscopic visual effect can be generated, and the polarization principle is widely applied to stereoscopic photography. However, the conventional dual-lens camera requires two independent lenses to simultaneously capture images, so that the stereoscopic effect of the photographed object can be truly reflected, and the structure is very complex and the cost is high. Although the existing single-lens camera has a simple structure, the imaging of the existing single-lens camera is two-dimensional, and the existing single-lens camera cannot accurately reflect the real three-dimensional effect (three-dimensional) of a shot object, so that the finally obtained three-dimensional image and a real object have deviation in proportional size.

Therefore, a dual-objective single-image-capturing stereoscopic image photographing apparatus capable of displaying a stereoscopic image by using a dual-objective lens and a single-image-capturing lens is needed.

Disclosure of Invention

The invention aims to provide a double-objective single-image-pickup stereoscopic image photographing device which can present a stereoscopic image by adopting a double-objective lens and a lens with a single-image-pickup structure.

In order to achieve the above object, the present invention provides a dual-objective single-image-pickup stereoscopic image photographing device, which comprises a dc power supply for supplying dc power, a dual-objective single-image-pickup lens assembly, a power control unit, a processing unit and a display unit, wherein the dual-objective single-image-pickup lens assembly comprises a left image pickup structure, a right image pickup structure and a CCD image pickup unit, the left image pickup structure and the right image pickup structure are symmetrically and correspondingly arranged on the left side and the right side of the CCD image pickup unit, and the left image pickup structure and the right image pickup structure have the same structure and are both of liquid crystal glass structures; the input end of the power supply control unit is electrically connected with the direct current power supply, the output end of the power supply control unit is respectively and independently electrically connected with the left image pickup structure and the right image pickup structure, and the power supply control unit alternately controls the electrical conduction of the left image pickup structure and the right image pickup structure with the direct current power supply; the power supply control unit controls the right image pickup structure to be electrically conducted with the direct current power supply, and a shot object obtains an image through the left image pickup structure to form a left image in the CCD image pickup unit; the power supply control unit controls the left image pickup structure to be electrically conducted with the direct-current power supply, and a shot object obtains an image through the right image pickup structure to form a right image in the CCD image pickup unit; the processing unit is in communication connection with the CCD image pickup unit and receives the left image and the right image formed by the CCD image pickup unit in real time and carries out superposition processing to form a three-dimensional image; the display unit is in communication connection with the processing unit, and receives and displays the stereoscopic image.

Compared with the prior art, the power control unit controls the left image pickup structure and the right image pickup structure to be alternately electrically conducted with the direct-current power supply, so that a shot object obtains an image through the left image pickup structure to form a left image in the CCD image pickup unit, the shot object obtains the image through the right image pickup structure to form a right image in the CCD image pickup unit, and the processing unit receives the left image and the right image formed by the CCD image pickup unit in real time and performs superposition processing to form a three-dimensional image which is displayed in the display unit. The invention is used for obtaining the optical device forming the left and right images, the left image pickup structure and the right image pickup structure are completely finished by adopting independent single lenses, the image obtaining way of the double lenses is realized by the symmetrical arrangement of the two single lenses, and simultaneously, the lens assembly effectively integrates the advantages of the double lenses and the single lens by matching the single image pickup mode with the images provided by the two single lenses so as to solve the technical problems that the existing double lens structure is complicated and the single lens is difficult to accurately reflect the three-dimensional effect of a shot object. Meanwhile, the invention completely simulates the stereoscopic effect of seeing things by human eyes by adopting the principle that the left image and the right image are superposed to form the stereoscopic image, so that the vivid real stereoscopic effect is displayed from the display unit, and the stereoscopic effect of the shot object is accurately reflected.

Preferably, the double-objective single-image-pickup stereoscopic image photographing device of the invention further comprises a central reflector, the center of the central reflector is opposite to the center of the CCD image pickup unit, the central reflector has a left reflecting surface and a right reflecting surface which are symmetrically arranged, the left reflecting surface receives the image acquired by the left image pickup structure and reflects the image to the CCD image pickup unit, and the right reflecting surface receives the image acquired by the right image pickup structure and reflects the image to the CCD image pickup unit.

Preferably, the left image capturing structure of the dual-objective single-image capturing stereoscopic image photographing device of the invention comprises a left objective, wherein the left objective is positioned on the left side of the left reflecting surface and is provided with a left electronic curtain facing the left objective, the left electronic curtain is electrically connected with the direct-current power supply and then is in a light shielding structure, and the left electronic curtain is electrically connected with the direct-current power supply and then is in a light transmitting structure; a left reflector is arranged outside the left electronic curtain, the left reflector and the left reflecting surface are parallel to each other, and the left electronic curtain is positioned between the left objective lens and the left reflector; and the shot object forms the left image in the CCD image pickup unit through the left objective lens, the left electronic curtain, the left reflector and the left reflecting surface.

Preferably, the right image capturing structure of the dual-objective single-image capturing stereoscopic image photographing device of the invention comprises a right objective, wherein the right objective is positioned at the right side of the right reflecting surface and is provided with a right electronic curtain facing the right objective, the right electronic curtain is electrically connected with the direct current power supply and then is in a light shielding structure, and the right electronic curtain and the direct current power supply are electrically disconnected and then are in a light transmitting structure; a right reflector is arranged outside the right electronic curtain, the right reflector and the right reflecting surface are parallel to each other, and the right electronic curtain is positioned between the right objective lens and the right reflector; and the right image is formed in the CCD image pickup unit by the shot object through the right objective lens, the right electronic curtain, the right reflector and the right reflecting surface.

Preferably, the left electronic curtain and the right electronic curtain of the double-objective single-image-pickup stereoscopic image photographing device have the same structure and are both transparent liquid crystal glass structures.

Preferably, the liquid crystal glass structure of the dual-objective single-image-pickup stereoscopic image photographing device of the invention comprises a first glass substrate, wherein the upper surface of the first glass substrate is covered with a first conductive film layer with a transparent structure, the upper surface of the first transparent conductive film layer is covered with a liquid crystal layer with a transparent structure, the upper surface of the liquid crystal layer is covered with a second conductive film layer with a transparent structure, the upper surface of the second conductive film layer is covered with a second glass substrate, the upper surface of the second glass substrate is covered with a polarized light sheet, the first glass substrate, the first conductive film layer, the liquid crystal layer, the second conductive film layer, the second glass substrate and the polarized light sheet are sequentially stacked and packaged into an integrated structure, the first conductive film layer and the second conductive film layer are respectively and correspondingly electrically connected with the positive electrode and the negative electrode of a direct-current power supply, and the polarization direction of the liquid crystal layer after direct-current piezoelectric is applied is vertical to the polarization direction of the polarized light sheet; the liquid crystal layers of the left electronic curtain and the right electronic curtain are in a light-shading structure after being electrically connected with a direct-current power supply, and the liquid crystal layers of the left electronic curtain and the right electronic curtain are in a light-transmitting structure after being electrically connected with the direct-current power supply.

Preferably, the boundary line between the left reflecting surface and the right reflecting surface of the dual-objective single-image-pickup stereoscopic image photographing apparatus of the present invention is directly opposite to the center of the CCD image pickup unit.

Preferably, an included angle between the left reflecting surface and the right reflecting surface of the dual-objective single-image-pickup stereoscopic image photographing device of the invention is an obtuse angle.

Drawings

Fig. 1 is a schematic structural view of a single-image-capturing stereoscopic image photographing apparatus with two objective lenses according to the present invention.

Fig. 2 is a schematic block diagram of a dual-objective single-image-pickup stereoscopic image photographing apparatus according to the present invention.

Fig. 3 is a schematic view of the arrangement positions of the left and right reflective surfaces and the CCD image capturing unit of the dual-objective single-image capturing stereoscopic image photographing apparatus according to the present invention.

Fig. 4 is a schematic structural diagram of a liquid crystal glass structure of a dual-objective single-image-pickup stereoscopic image photographing device.

Fig. 5 is a schematic sectional view taken along line C-C of fig. 3.

Fig. 6 illustrates a schematic diagram of the optical path for forming a left image by the left image pickup structure of the present invention.

Fig. 7 illustrates a schematic diagram of the optical path for forming a right image by the right image pickup structure of the present invention.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like reference numerals represent like elements throughout.

As shown in fig. 1-3, the dual-objective single-image-capturing stereoscopic image photographing apparatus of the present invention includes a dc power supply 100 for supplying dc power, a dual-objective single-image-capturing lens assembly, a power control unit 101, a processing unit 102 and a display unit 103, wherein the dual-objective single-image-capturing lens assembly includes a left image-capturing structure 10, a right image-capturing structure 20 and a CCD image-capturing unit 30, the left image-capturing structure 10 and the right image-capturing structure 20 are symmetrically disposed on the left side and the right side of the CCD image-capturing unit 30, and the left image-capturing structure 10 and the right image-capturing structure 20 have the same structure and are both liquid crystal glass structures 4; the input end of the power control unit 101 is electrically connected to the dc power supply 100, the output end of the power control unit 101 is separately and electrically connected to the left image capturing structure 10 and the right image capturing structure 20, and the power control unit 101 alternately controls the electrical conduction between the left image capturing structure 10 and the right image capturing structure 20 and the dc power supply; the power control unit 101 controls the right image capturing structure 20 to be electrically connected with the dc power supply 100, and the object to be photographed obtains an image through the left image capturing structure 10 and forms a left image in the CCD image capturing unit 30; the power control unit 101 controls the left image capturing structure 10 to be electrically connected with the dc power supply 100, and the object to be photographed obtains an image through the right image capturing structure 20 and forms a right image in the CCD image capturing unit 30; the processing unit 102 is in communication connection with the CCD image pickup unit 30, and the processing unit 102 receives the left image and the right image formed by the CCD image pickup unit 30 in real time and performs superposition processing to form a three-dimensional image; the display unit 103 is in communication connection with the processing unit 102, and the display unit 103 receives and displays the stereoscopic image. According to the invention, the power control unit 101 alternately controls the left image pickup structure 10 and the right image pickup structure 20 to be electrically conducted with the direct current power supply 100, so that a photographed object can acquire an image through the left image pickup structure 10 and form a left image in the CCD image pickup unit 30, the photographed object can acquire the image through the right image pickup structure 20 and form a right image in the CCD image pickup unit 30, and the processing unit 102 receives the left image and the right image formed by the CCD image pickup unit 30 in real time and performs superposition processing to form a three-dimensional image which is displayed in the display unit 103. The left image pickup structure 10 and the right image pickup structure 20 of the optical device for acquiring and forming the left image and the right image are completely finished by adopting independent single lenses, the image acquisition way of the double lenses is realized by the symmetrical arrangement of the two single lenses, and simultaneously, the advantages of the double lenses and the single lenses adopted in the prior art are effectively combined to solve the technical problems that the structure of the double lenses is complex and the single lenses are difficult to accurately reflect the three-dimensional effect of a shot object by matching the single image pickup mode with the images provided by the two single lenses. Meanwhile, the invention completely simulates the stereoscopic effect of seeing things by human eyes by adopting the principle that the left image and the right image are superposed to form the stereoscopic image, so that the vivid real stereoscopic effect is displayed from the display unit 103, and the stereoscopic effect of the shot object is accurately reflected.

With continuing reference to fig. 1-3, preferably, the dual-objective single-image-capturing stereoscopic image photographing apparatus of the present invention further includes a central reflector 1, a center of the central reflector 1 is directly opposite to a center of the CCD image capturing unit 30, the central reflector 1 has a left reflective surface 11 and a right reflective surface 21 symmetrically disposed, the left reflective surface 11 receives an image obtained by the left image capturing structure 10 and reflects the image to the CCD image capturing unit 30, and the right reflective surface 21 receives an image obtained by the right image capturing structure 20 and reflects the image to the CCD image capturing unit 30; images acquired by two independent lenses (namely, the left image pickup structure 10 and the right image pickup structure 20) can be transmitted to the same CCD image pickup unit 30 for superposition processing by means of two reflecting surfaces (namely, the left reflecting surface 11 and the right reflecting surface 21) of one central reflecting mirror 1, and the structure is simple and practical; meanwhile, the pixels and positions of the left image and the right image formed by the CCD image pickup unit 30 are consistent, so that the three-dimensional effect of the image superposed and simulated by the invention is better and more accurate.

As shown in fig. 1-3, preferably, the left image capturing structure 10 of the dual-objective single-image capturing stereoscopic image photographing device of the present invention includes a left objective 12, the left objective 12 is located at the left side of the left reflecting surface 11, a left electronic curtain 13 is disposed opposite to the left objective 12, the left electronic curtain 13 is electrically connected to the dc power supply 100 and then forms a light shielding structure, and the left electronic curtain 13 is electrically connected to the dc power supply 100 and then forms a light transmitting structure; a left reflector 14 is further arranged outside the left electron curtain 13, the left reflector 14 is parallel to the left reflecting surface 11, and the left electron curtain 13 is located between the left objective lens 12 and the left reflector 14; the object forms the left image in the CCD image capturing unit 30 through the left objective lens 12, the left electron curtain 13, the left mirror 14, and the left reflecting surface 11.

As shown in fig. 1-3, preferably, the right image capturing structure 20 of the dual-objective single image capturing stereoscopic image capturing device of the present invention includes a right objective 22, the right objective 22 is located at the right side of the right reflecting surface 21, and a right electronic curtain 23 is disposed opposite to the right objective 22, the right electronic curtain 23 is electrically connected to the dc power supply 100 and then forms a light shielding structure, and the right electronic curtain 23 is electrically disconnected from the dc power supply 100 and then forms a light transmitting structure; a right reflector 24 is further disposed outside the right electronic curtain 23, the right reflector 24 and the right reflecting surface 21 are parallel to each other, and the right electronic curtain 23 is located between the right objective 22 and the right reflector 24; the object forms the right image in the CCD image capturing unit 30 through the right objective lens 22, the right electron curtain 23, the right mirror 24 and the right reflecting surface 21.

As shown in fig. 1 to 5, specifically, the left electronic curtain 13 and the right electronic curtain 23 of the dual-objective single-image-capturing stereoscopic image capturing device of the present invention have the same structure and both have a transparent liquid crystal glass structure 4. More specifically, the liquid crystal glass structure 4 of the present invention includes a first glass substrate 41, the upper surface of the first glass substrate 41 is covered with a first transparent conductive film layer 42, the upper surface of the first transparent conductive film layer 42 is covered with a transparent liquid crystal layer 43, the upper surface of the liquid crystal layer 43 is covered with a second transparent conductive film layer 44, the upper surface of the second transparent conductive film layer 44 is covered with a second glass substrate 45, the upper surface of the second glass substrate 45 is covered with a polarizer 46, the first glass substrate 41, the first transparent conductive film layer 42, the liquid crystal layer 43, the second transparent conductive film layer 44, the second transparent conductive film layer 45, and the polarizer 46 are sequentially stacked and packaged to form an integrated structure, the first transparent conductive film layer 42 and the second transparent conductive film layer 44 are respectively and electrically connected to the positive electrode and the negative electrode of the dc power supply 100, and the polarization direction of the liquid crystal layer 43 after dc voltage application is perpendicular to the polarization direction of the polarizer 46; the liquid crystal layers 43 of the left electronic curtain 13 and the right electronic curtain 23 are electrically connected to a direct current power supply and then form a light shielding structure, and the liquid crystal layers 43 of the left electronic curtain 13 and the right electronic curtain 23 are electrically disconnected from the direct current power supply and then form a light transmitting structure. Further, since the polarization direction of the liquid crystal layer 43 after being applied with the dc voltage is perpendicular to the polarization direction of the polarizer 46, that is, the liquid crystal layer 43 at this time forms a polarizer structure perpendicular to the polarization direction of the polarizer 46; according to the optical principle that the light flux between two polarizing plates with mutually perpendicular polarization directions is zero, the light incident from the first glass substrate 41 cannot transmit through the polarizing plate 46, or the light incident from the polarizing plate 46 cannot transmit through the first glass substrate 41, that is, the first conductive film layer 42 and the second conductive film layer 44 are respectively and correspondingly electrically connected with the positive electrode and the negative electrode of an external direct-current power supply; the left electronic curtain 13 and the right electronic curtain 23 of the invention are of shading structures, thus realizing the shading effect on light. After the first conductive film layer 42 and the second conductive film layer 44 are disconnected from the positive and negative electrodes of the external dc power supply, the liquid crystal ions in the liquid crystal layer 43 lose the electric field and restore the disordered arrangement thereof, so that the polarization direction of the liquid crystal layer 43 disappears, and the liquid crystal layer 43 and other layers are transparent structures, so that the light incident from the first glass substrate 41 can be transmitted through the polarizer 46, or the light incident from the polarizer 46 can be transmitted through the first glass substrate 41, i.e. after the first conductive film layer 42 and the second conductive film layer 44 are disconnected from the electrical connection with the external dc power supply, the left electronic curtain 43 and the right electronic curtain 43 of the present invention are in a light-transmitting structure, thereby realizing the light-transmitting effect.

As shown in fig. 1 and fig. 2, specifically, the boundary line a between the left reflective surface 11 and the right reflective surface 21 of the dual-objective single-image-capturing stereoscopic image capturing device of the present invention is orthographically projected on the center line B of the CCD image capturing unit 30; therefore, the left image pickup structure and the right image pickup structure formed by the invention are designed to be symmetrical left and right along the boundary line A and are arranged symmetrically left and right along the center line B. Therefore, the pixels and positions of the left image and the right image formed by the CCD image pickup unit 30 are consistent, and the three-dimensional effect of the superposed and simulated images is better and more accurate; in addition, the whole device has complete structural symmetry and is convenient to manufacture and assemble. More specifically, the angle α between the left reflecting surface 11 and the right reflecting surface 21 of the central reflecting mirror 1 of the present invention is an obtuse angle.

In the present invention, the dotted line with an arrow in fig. 1 illustrates the optical schematic diagram of the dual-objective single-pickup stereoscopic image photographing apparatus according to the present invention. More specifically, the dotted line with an arrow in fig. 6 illustrates an optical path schematic diagram of the left image pickup structure 10 of the present invention for forming a left image, in the state shown in fig. 6, the right electronic curtain 23 of the present invention is electrically connected to the dc power supply 100 and then forms a light shielding structure, and the left electronic curtain 13 is electrically disconnected from the dc power supply 100 and then forms a light transmitting structure, so that only the left image is formed; the dotted line with arrow in fig. 7 illustrates the optical path schematic diagram of the right image formed by the right image capturing structure 20 of the present invention, in the state shown in fig. 7, the left electron curtain 13 of the present invention is electrically connected to the dc power supply 100 to form a light shielding structure, and the right electron curtain 23 is electrically disconnected from the dc power supply 100 to form a light transmitting structure, so that only the right image is formed.

The above disclosure is only for the preferred embodiment of the present invention, and it should be understood that the present invention is not limited thereto, and the invention is not limited to the above disclosure.

Claims

1. A kind of double objective lens single image pick-up stereoscopic image photographic arrangement, characterized by that, comprising:

a DC power supply for supplying DC power;

the double-objective single-image-pickup lens assembly comprises a left image pickup structure, a right image pickup structure and a CCD image pickup unit, wherein the left image pickup structure and the right image pickup structure are symmetrically and correspondingly arranged on the left side and the right side of the CCD image pickup unit, and the left image pickup structure and the right image pickup structure have the same structure and are both liquid crystal glass structures;

the input end of the power supply control unit is electrically connected with the direct current power supply, the output end of the power supply control unit is respectively and independently and electrically connected with the left image pickup structure and the right image pickup structure, and the power supply control unit alternately controls the electrical conduction of the left image pickup structure and the right image pickup structure and the direct current power supply;

the power supply control unit controls the right image pickup structure to be electrically conducted with the direct current power supply, and a photographed object obtains an image through the left image pickup structure and forms a left image in the CCD image pickup unit; the power supply control unit controls the left image pickup structure to be electrically conducted with the direct-current power supply, and a photographed object obtains an image through the right image pickup structure and forms a right image in the CCD image pickup unit;

the processing unit is in communication connection with the CCD image pickup unit and receives the left image and the right image formed by the CCD image pickup unit in real time and carries out superposition processing to form a three-dimensional image;

and the display unit is in communication connection with the processing unit and receives and displays the stereoscopic image.

2. The photographing apparatus for stereoscopic images with two objective lenses and a single image pick-up as claimed in claim 1, further comprising a central reflector, wherein the center of the central reflector faces the center of the CCD image pick-up unit, the central reflector has a left reflective surface and a right reflective surface symmetrically disposed, the left reflective surface receives the image obtained by the left image pick-up structure and reflects the image into the CCD image pick-up unit, and the right reflective surface receives the image obtained by the right image pick-up structure and reflects the image into the CCD image pick-up unit.

3. The dual-objective single-image capturing device for stereoscopic image photographing as claimed in claim 2, wherein the left image capturing structure comprises a left objective lens, the left objective lens is located at the left side of the left reflecting surface, and a left electronic curtain is disposed opposite to the left objective lens, the left electronic curtain is electrically connected to the dc power supply and then forms a light shielding structure, and the left electronic curtain is electrically disconnected from the dc power supply and then forms a light transmitting structure; a left reflector is arranged outside the left electronic curtain, the left reflector and the left reflecting surface are parallel to each other, and the left electronic curtain is positioned between the left objective lens and the left reflector; and the shot object forms the left image in the CCD image pickup unit through the left objective lens, the left electronic curtain, the left reflector and the left reflecting surface.

4. The apparatus according to claim 3, wherein the right image capturing structure comprises a right objective lens, the right objective lens is located at the right side of the right reflecting surface, and a right electronic curtain is disposed opposite to the right objective lens, the right electronic curtain is electrically connected to the DC power supply and forms a light shielding structure, and the right electronic curtain is electrically disconnected from the DC power supply and forms a light transmitting structure; a right reflector is arranged outside the right electronic curtain, the right reflector and the right reflecting surface are parallel to each other, and the right electronic curtain is positioned between the right objective lens and the right reflector; and the right image is formed in the CCD image pickup unit by the shot object through the right objective lens, the right electronic curtain, the right reflector and the right reflecting surface.

5. The dual-objective single-image capturing device according to claim 4, wherein the left electronic curtain and the right electronic curtain have the same structure and are made of transparent liquid crystal glass.

6. The photographing device for stereoscopic images with two objectives and a single image pick-up according to claim 5, wherein the liquid crystal glass structure comprises a first glass substrate, the first glass substrate has a first conductive film layer of a transparent structure on the upper surface thereof, the first transparent conductive film layer has a liquid crystal layer of a transparent structure on the upper surface thereof, the liquid crystal layer has a second conductive film layer of a transparent structure on the upper surface thereof, the second conductive film layer has a second glass substrate on the upper surface thereof, the second glass substrate has a polarizer on the upper surface thereof, the first glass substrate, the first conductive film layer, the liquid crystal layer, the second conductive film layer, the second glass substrate and the polarizer are sequentially stacked and packaged into an integrated structure, the first conductive film layer and the second conductive film layer are electrically connected to the positive and negative electrodes of the dc power supply, respectively, and the polarization direction of the liquid crystal layer after applying the dc voltage is perpendicular to the polarization direction of the polarizer; the liquid crystal layers of the left electronic curtain and the right electronic curtain are in a light-shading structure after being electrically connected with a direct-current power supply, and the liquid crystal layers of the left electronic curtain and the right electronic curtain are in a light-transmitting structure after being electrically connected with the direct-current power supply.

7. The photographing apparatus for stereoscopic images with a single image pick-up having two objectives as claimed in claim 2, wherein the boundary line between the left reflecting surface and the right reflecting surface is aligned with the center of the CCD image pick-up unit.

8. The apparatus according to claim 2, wherein the angle between the left and right reflective surfaces is obtuse.