WO2019142992A1 - Real-time stereoscopic image photographing apparatus - Google Patents

Abstract

The present invention relates to a real-time stereoscopic image photographing apparatus and, more specifically, to a real-time stereoscopic image photographing apparatus having a lens-less structure, which comprises: a pair of light sources positioned on the right and the left side of a subject while being spaced a predetermined distance from the subject; and at least one polarizing filter installed on a path of light transmitted from the light sources to an image sensor, wherein the pair of light sources positioned on the left and the right side of the subject is alternately turned on and off, so that an image in which binocular disparity has been formed is changed into a stereoscopic image through the image sensor and a user thus can observe the stereoscopic image of the subject in real time.

Description

Real-time stereoscopic imaging device

This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0007452, filed on Jan. 22, 2018, the entire contents of which are incorporated herein by reference.

The present invention relates to a real-time stereoscopic image capturing apparatus, and more particularly, to a real-time stereoscopic image capturing apparatus that is installed on a path of a light transmitted from a light source to a pair of light sources spaced a predetermined distance from each other, A stereoscopic image of a subject can be observed in real time by at least one polarizing filter and stereoscopic images of an image formed by binocular parallax through an image sensor by alternately blinking a pair of light sources formed on the left and right sides of the subject To a real-time stereoscopic imaging apparatus.

A photographing device for photographing the shape of an object using light is being studied and utilized in various industrial fields such as electronic and medical fields. For example, an optical microscope is an apparatus for observing or recording a microscopic portion of an object magnified using light. It is an indispensable experimental instrument that is used for a variety of purposes ranging from biology to various scientific fields, such as semiconductor, medical, and material science, as well as advanced education in schools. The structure of a general microscope uses an objective lens and an alternative lens, and usually has a magnification of 50X to 1000X. When observing with a human eye, an object image is first enlarged with an objective lens to make a 20 mm intermediate image, and then an alternative lens is used to make a virtual image of 200 mm in size at a distance of 250 mm from the eye to make it visible . The alternative lens is usually 10X magnification, and the objective lens has 5X, 10X, 20X, 50X, 100X, and the like.

The ability to see the structure of a subject in detail is called resolution (or resolution). This is a factor that determines the performance of the microscope and is determined by the performance of the objective lens. Therefore, even if the magnification is increased by the combination of the objective lens and the eyepiece lens, if the performance of the objective lens is poor, the fuzzy image is merely enlarged and the fine structure can not be discriminated.

In order to analyze the stereoscopic structure of the subject more precisely, it is necessary to develop a microscope capable of photographing and displaying 3D stereoscopic images in real time. Recently, research and development related to this has been going on.

Recently, digitalization of image information obtained from a microscope has been performed due to development of computer technology. In order to accept a digital image at present, an image is obtained by changing the structure of an optical microscope. The objective of the optical microscope is to reduce the image of the enlarged image by using a camera again. This is because, unlike a human eye which is suitable for a 200 mm image at a distance of 250 mm, the digital image sensor has a sensor of about 5 X 4 mm Surface area. That is, an intermediate lens having a size of 20 mm is reduced using an optical system of a camera to form an image on the sensor surface without using an alternative lens having a 10X magnification function.

As described above, in the photographing apparatus including the microscope of the related art, in the process of obtaining a digital image, the image must be enlarged using a lens, and then reduced again using a camera. Therefore, since the lens is used in such a process, it is large in size, expensive, and has a limitation in resolution due to optical aberration.

In order to solve such a problem, Korean Patent Registration No. 10-0764003 discloses a technique of using light transmitted perpendicularly to an image sensor rather than using a lens to transmit light transmitted through the sample to each pixel of the image sensor through a structure A lensless photographing apparatus for obtaining an image by projecting one-on-one is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0039151, wherein a sample inside a sample holder disposed adjacent to an image sensor is illuminated at a plurality of different angles And obtaining a three-dimensional tomographic image by reconstructing a three-dimensional image of the sample based on images obtained from illumination at the plurality of different angles using a digital processor.

However, Korean Patent No. 10-0764003 has a merit that a digital image can be directly obtained without enlarging / reducing an image using a lens, but it has a disadvantage that a stereoscopic image of a subject can not be obtained.

That is, in order to perform more precise cell manipulation, for example, when an oocyte is subjected to a specific manipulation while observing the cell such as artificial insemination, an imaging device capable of observing the three-dimensional microstructure of the object in real time However, Korean Patent Registration No. 10-0764003 has a problem in that it can generate only 2D digital images of high resolution, which limits the use.

In addition, there is a disadvantage in that it is necessary to additionally include a structure for passing only vertically incoming light in order to obtain a digital image. The structure removes light scattered in various directions from a subject and makes a one-to- There is a problem in that it is difficult to manufacture since a material which does not transmit the light must be formed to have a plurality of fine linear holes corresponding to each pixel of the image sensor.

On the other hand, Korean Patent Publication No. 10-2014-0039151 has an advantage in that a stereoscopic image can be acquired with only an image sensor and an illumination source without a lens using images obtained from illumination at a plurality of different angles, This relates to optical coherence tomography using partially coherent or coherent light wherein a plurality of images obtained from illumination at the plurality of different angles produce low resolution subpixel images from which a single high resolution solid There is a problem that it is impossible to observe a subject such as a tissue cell in real time because an additional process of reconstructing the low-resolution images in a digital manner through a separate processor is required to obtain an image.

That is, Korean Patent Laid-Open Publication No. 10-2014-0039151 requires an additional process of reconstructing a plurality of low-resolution subpixel images in order to obtain a high-resolution single stereoscopic image, For example, observation of a cell of a tissue having a very short survival period or operation of a specific cell in real time in genetic engineering, etc.).

The present inventors have conducted various studies to solve the above problems. As a result, the inventors of the present invention have developed an image sensor for detecting and illuminating light irradiated to a subject, A pair of light sources alternately blinking and at least one polarizing filter provided on the path of light transmitted from the light source to the image sensor, so that the polarized light in one direction is incident on the object, The image is prevented from being blurred due to scattering, reflection, etc., and the left and right images formed with the binocular parallax are alternately generated in succession by the alternately blinking light source, so that a high-resolution stereoscopic image can be observed in real time And completed the present invention.

Accordingly, it is an object of the present invention to provide a stereoscopic imaging apparatus capable of generating a high-resolution digital image without a lens.

It is another object of the present invention to provide a real-time stereoscopic imaging apparatus capable of observing a high-resolution three-dimensional image of a subject in real time.

According to an aspect of the present invention, there is provided a method of detecting an object by irradiating light onto the object, detecting light passing through processes such as transmission, refraction, reflection, scattering, and phase change according to the characteristics of the object A pair of light sources spaced apart from each other with respect to a center axis of the image sensor and at least one polarizing filter provided on a path of light transmitted from the light source to the image sensor, The pair of light sources provides a real-time stereoscopic imaging apparatus in which left and right light sources are alternately flickered with respect to the central axis of the image sensor to form a binocular parallax.

As described above, the present invention solves the problems of increasing the size of a photographing apparatus, increasing the price, and having a limit in resolution due to optical aberration in using a lens in generating an existing digital image, It is possible to generate a high-resolution digital image without using a lens.

In addition, the present invention can generate and observe a high-resolution stereoscopic image in real time with a simple configuration of an image sensor, a pair of light sources alternately blinking and a polarizing filter, observe a subject in real time and apply a specific operation There are advantages to be able to.

FIG. 1 is a diagram showing a schematic configuration of a real-time stereoscopic imaging apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration in which a polarizing filter is added between a subject and an image sensor in the real-time stereoscopic imaging apparatus of FIG. 1;

FIG. 3 is a view showing a configuration in the case where the real-time stereoscopic image pickup apparatus of FIG. 1 includes a plurality of light sources.

FIGS. 4 and 5 are views showing a configuration in which a focusing optical system and a microscopic optical system are additionally provided in a real-time stereoscopic image pickup apparatus according to an embodiment of the present invention.

6 is a view showing a schematic configuration of a real-time stereoscopic imaging apparatus according to another embodiment of the present invention.

7 and 8 are side cross-sectional views of a real-time stereoscopic imaging apparatus according to another embodiment of the present invention.

9 is a view showing a structure of a short polarization according to another embodiment of the present invention.

10 is a view illustrating a structure of a composite polarized light according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. These drawings may be embodied in various forms as an embodiment for explaining the present invention, but the present invention is not limited thereto. In the drawings, the same reference numerals are used for similar parts throughout the specification. Also, the size and relative size of the components shown in the figures are independent of the actual scale, and may be reduced or exaggerated for clarity of description.

In addition, terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should appropriately define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, it should be understood that the embodiments described herein and the configurations shown in the drawings are merely examples of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application.

The present invention relates to a real-time stereoscopic image capturing apparatus, and more particularly to a real-time stereoscopic image capturing apparatus and method which are arranged such that a subject to be observed is disposed adjacent to the subject and light is irradiated onto the subject, A pair of light sources which are provided at left and right sides of the center axis of the image sensor and are spaced apart from each other by a predetermined distance and are flickered alternately in left and right directions to form a binocular parallax, There is provided a real-time stereoscopic imaging apparatus including a polarizing filter provided on a path of light to be transmitted.

That is, the real-time stereoscopic image pickup apparatus according to the present invention includes a pair of light sources provided on both left and right sides of the center axis of the image sensor and alternately blinking, It is possible to generate an image of a subject to be observed in real time without a lens, in addition to a general image pickup apparatus, and also to generate left and right images of a subject alternately and continuously to form a binocular parallax The stereoscopic image of the subject can be generated in real time. Particularly, by using the polarized light filter provided on the path of the light transmitted from the pair of light sources to the image sensor, The reason why the light incident on the subject is scattered or reflected So that it is possible to observe high-resolution stereoscopic images in real time.

Hereinafter, a real-time stereoscopic imaging apparatus according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing a schematic configuration of a real-time stereoscopic image pickup apparatus according to an embodiment of the present invention. FIG. 2 shows a configuration in which a polarized light filter is added between a subject and an image sensor in the real- FIG. 3 is a diagram illustrating a configuration in which a plurality of light sources are provided in the real-time stereoscopic image taking apparatus of the present invention shown in FIG. 1, and FIGS. 4 and 5 are cross- In which the imaging optical system and the microscope optical system are additionally provided, respectively.

As shown in FIG. 1 (a), a real-time stereoscopic imaging apparatus according to an embodiment of the present invention includes an image sensor 110, a pair of light sources 120, and a polarization filter 130.

The image sensor 110 detects subject information and converts it into an electrical image signal. The image sensor 110 detects light irradiated to a subject A disposed adjacent to the image sensor 110, and images the light. A subject can be detected through an image sensor through light, including, but not limited to, a human body, a tissue of a human body, microorganisms, microcells, and objects. In addition, the light detected by the image sensor 110 includes light that has been transmitted, refracted, reflected, scattered, and phase-changed according to the intrinsic characteristics of the subject as the light irradiated from the light source passes through the subject, It corresponds to image information.

Various types of sensors capable of detecting and imaging light can be used in the image sensor 110 without limitation. Typically, a CCD (Charge Coupled Device), a CMOS image sensor, an electromagnetic wave sensor, an X-ray detection sensor, have.

The real-time stereoscopic photography apparatus according to an exemplary embodiment of the present invention includes a pair of light sources 120 for detecting light irradiated to a subject A and imaging the images. As shown in FIG. The pair of light sources includes a device for irradiating light, such as a device for irradiating visible light, ultraviolet light, infrared light, X-rays, gamma rays, and the like.

That is, one light source 121 of the pair of light sources 120 is disposed on the left side of the center axis C of the image sensor 110, and the other light source 122 is disposed on the left side of the image sensor 110 The center axis C of which is the center of the center axis.

At this time, the two light sources 120 are spaced apart from each other by a predetermined distance to be symmetrical with respect to the center axis C of the image sensor 110.

For example, when the left light source 121 of the pair of light sources 120 is turned on, the right light source 122 is turned on when the left light source 121 is turned on. When the left light source 121 is turned off again, the right light source 122 is repeatedly turned on.

When the left light source 121 illuminates the image sensor 110, the image of the subject A illuminated by the left light source 121 and the image of the subject illuminated by the right light source 122 A) are successively generated in succession.

The image frame of the image sensor 110 and the pair of light sources 120 are synchronized with each other to generate an image in each frame every time the pair of light sources 120 are alternately flickered. The left image is formed as the left image and the right image is formed as the image generated while the right light source 122 is emitting light.

For example, in the case of an image frame generated by a general image sensor, about 30 frames per second are generated. At this time, a pair of light sources 120 synchronized with the image frame generates 30 frames per second The left and right images of about 15 frames per second are alternately generated in succession. Thus, the stereoscopic image of the subject A having the binocular parallax can be observed in real time.

In the present embodiment, a pair of light sources 120 are synchronized to be alternately blinked in synchronization with 30 frames per second. However, the present invention is not limited thereto. Conversely, when a pair of light sources 120 It should be understood that each frame may be synchronized to produce a flickering cycle that is alternately blinking.

In other words, in general, the higher the number of frames per second, the more natural the three-dimensional effect of the human eye becomes. Therefore, the flickering cycle of the pair of light sources 120 can be adjusted as needed, A stereoscopic image of a subject A having a more natural stereoscopic effect may be generated by synchronizing image frames of the pair of light sources 120 and the image sensor 110 so that each frame is generated in accordance with the stereoscopic image.

At this time, the cycle in which the pair of light sources 120 are alternately blinked can be appropriately adjusted in consideration of the resolution of stereoscopic images generated and the fatigue due to stereoscopic observation, and the image frame is divided into a pair of light sources 120, So that each frame is synchronized with the blinking period of each frame.

The pair of light sources 120 according to an embodiment of the present invention may be configured to adjust the distance between the left and right light sources 121 and 122 so as to adjust the binocular parallax.

Generally, if the difference between the left image and the right image forming the stereoscopic image is small, the stereoscopic feeling is decreased, but the stereoscopic fatigue is decreased. If the difference between the left and right images is large, the stereoscopic feeling is increased. Which varies depending on the size and type of the subject to be observed and the characteristics of the individual observer.

Accordingly, the real-time stereoscopic image capturing apparatus according to an embodiment of the present invention may be configured such that the left and right light sources 121 and 122 are moved left and right respectively so that binocular disparity can be controlled according to the size and type of a subject to be observed, So that the distance between the left and right light sources 121 and 122 can be adjusted.

At this time, the distance between the left and right light sources 121 and 122 is not particularly limited. As described above, it is possible to adjust the binocular disparity within a range in which the binocular disparity can be adjusted according to the size and type of the subject, Lt; / RTI >

In this case, it is troublesome to provide a separate driving device in order to configure the left and right light sources 121 and 122 to be movable left and right. In addition, there is a problem that the overall size of the photographing device becomes large due to the addition of such a driving device This can be.

In this embodiment, the image sensor 110 includes a plurality of light sources 220 (see FIG. 3) that are symmetrical on both sides of the center axis C of the image sensor 110, The light sources having the same distance from each other with reference to the center axis C of the light source are configured to be alternately turned on and off by only a selected one of the pair of light sources, And the binocular parallax can be adjusted by selectively blinking the light source pairs of the light source pairs. A detailed description thereof will be given later with reference to FIG.

In general, light is oscillated in an arbitrary plane perpendicular to the traveling direction of light. When light including vibration in all of these directions is incident on a subject A to be observed, The scattered light and the reflected light are detected through the image sensor 110 together with the transmitted light transmitted through the object, thereby causing a phenomenon that the image is blurred.

Particularly, in the case of generating a stereoscopic image using the binocular parallax as in the present invention, a blurred image due to scattered light and reflected light as described above may generate an image in which a three-dimensional effect is not properly formed, For example, when the real-time stereoscopic imaging apparatus of the present invention is a microscope, a real-time stereomicroscope for observing precise stereoscopic microstructure of a subject, such as discrimination of abnormality of specific cells or manipulation of specific cells, There is a problem that can not be applied.

In order to solve this problem, it is possible to use a point light source or light having passed through a lens having a high aperture value. However, when a point light source is used, a point light source smaller than the cell size must be used, When a plurality of light sources 220 (see FIG. 3), which will be described later in the embodiment of the present invention, are used, light having passed through a lens having a high aperture value is used, There is a problem that the volume of the photographing apparatus becomes very large.

Therefore, in order to solve the above-described problems, the polarization direction of polarized light can be controlled by disposing the polarization filter 130 on the path of light transmitted from the light source 120 to the image sensor. That is, when the polarizing filter 130 according to one embodiment of the present invention is disposed on the path of light transmitted from the pair of light sources 120 to the subject A, , Light having only waves in a specific direction among the light consisting of waves oscillating in all directions is incident on the object (A).

Thus, the polarized light that has passed through the polarizing filter 130 and is incident on the subject A is minimized in scattering or reflected from the surface of the subject to illuminate the subject A, Or refracted light or reflected shadows are detected through the image sensor 110, a high-resolution stereoscopic image can be generated in real time.

1 (a), the polarizing filter 130 is disposed in a path of light transmitted from the left light source 121 and the right light source 122 to the object, And the light generated from the left light source 121 and the light from the right light source 122 and passing through the polarization filter 130 may be polarized light having the same direction as the polarized light. As shown in the figure, the light source 121 and the right light source 122 are provided separately on the path of light transmitted to the subject, thereby generating polarized light of the same direction, May be configured to generate polarized light.

That is, when the polarizing filter 130 is individually provided on the path of the light transmitted from the left light source 121 and the right light source 122 to the subject, as shown in FIG. 1 (b) The light source 130 is installed on the path of light transmitted from the left light source 121 to the subject A through the left polarization filter 131 and the right light source 122 provided on the path of light transmitted to the subject A. [ The left polarizing filter 131 and the right polarizing filter 132 may be constituted by a polarizing filter for generating polarized light in the same direction or may be constituted by a polarizing filter for generating polarized light in the same direction, Polarized light generated by the polarizing filter.

Accordingly, when the left and right polarizing filters 131 and 132 are constituted by polarizing filters that generate polarized light in the same direction, the polarized light of the same direction of the waves is incident on the subject A, When the polarizing plates 131 and 132 are constituted by polarizing filters that generate polarized light in mutually different directions, polarized light composed of waves in mutually different directions is incident on the subject A.

The control is performed such that the user rotates the left and right polarizing filters 131 and 132 provided at this time with the center axis C of the image sensor 110 as the rotation axis, can do. Also, an electric / electronic polarization control system for controlling polarization by an external electrical signal may be used.

The real-time stereoscopic imaging apparatus according to an embodiment of the present invention may further include a transparent substrate 140 and a color filter 150, as shown in FIG. 1 (b).

The transparent substrate 140 is disposed adjacent to the image sensor 110 for supporting an object A disposed adjacent to the image sensor 110 and is provided between the image sensor 110 and the object A Thereby preventing the image sensor 110 from being contaminated by the object A by preventing the image sensor 110 from directly contacting the object A with the image sensor 110. [

The color filter 150 is provided between the pair of light sources 120 and the polarizing filter 130 and generates a stereoscopic image in which the color of a specific wavelength is emphasized in the stereoscopic image of the subject A by passing only light of a specific wavelength So that the specific region of the subject A to be observed can be more easily observed.

Here, when the transparent substrate 140 for supporting the subject A is additionally provided, there arises a problem that the resolution of the stereoscopic image of the subject A is lowered due to scattering or reflection of light by the transparent substrate 140 The image sensor 110 may be contaminated by the subject A when the subject A is directly disposed adjacent to the image sensor 110 without the transparent substrate 140 as shown in FIG. , It may be difficult to continuously observe various types of objects.

Accordingly, in the present invention, one unit is formed by modulating the image sensor 110, the pair of light sources 120, and the polarization filter 130, and a plurality of the modularized units are arranged in a predetermined form, And can be configured so that different types of subjects are arranged for each unit and can be continuously observed.

For example, in order to observe a total of 25 different objects, the image sensor 110, the pair of light sources 120, and the polarizing filter 130 modulate one unit in a horizontal direction and a vertical direction A total of 25 objects are arranged in one set and 25 different objects to be observed are arranged adjacent to each of the 25 image sensors 110 constituting each of the modular units so that a total of 25 So that different objects can be observed continuously.

Therefore, in the real-time stereoscopic image pickup apparatus according to the present invention having the above-described structure, the image sensor 110 is placed on the subject A by directly placing the subject A on the image sensor 110 without the transparent substrate 140 It is preferable that each of the modularized units is made as a single unit for this purpose.

There is no particular limitation on the arrangement type or the number of the modularized units, and it is needless to say that they can be arranged in various shapes and numbers as needed.

In the present invention, the pair of light sources 120, the polarizing filter 130, and the image sensor 110 are modularized to form one unit, and the image sensor 110 can be detachably attached using a connection terminal or the like So that only the image sensor 110 is replaced and connected to the module so that the image sensor 110 can be used in a single use.

At this time, one image sensor 110 and one subject A are corresponded to each other so that only one image sensor 110 is used for one subject A, so that the contamination problem of the image sensor 110 by the subject A And the scattering of light by the transparent substrate 140 can be simultaneously solved.

It should be noted that a plurality of modules may be arranged in a predetermined form so that the image sensor 110 can be detachably attached thereto, and a plurality of objects can be simultaneously viewed through the unit.

2 is a diagram showing a configuration in which a polarizing filter 133 is added between a subject and an image sensor in the real-time stereoscopic imaging apparatus of FIG. When the polarized light having passed through the polarizing plate 130 is projected onto the subject A, polarization characteristics such as transmission, refraction, diffraction, reflection, scattering, and phase change disappear according to the characteristics of the subject. The resolution of the stereoscopic image may be lowered when reaching the sensor. In order to solve such a problem, a polarizing filter 133 may be additionally disposed between the subject A and the image sensor 110 as shown in FIG. 2A.

By additionally arranging the polarizing filter 133, it is possible to acquire an image of a sharp and high-resolution subject by blocking or controlling a part of the light incident on the image sensor 110. For example, The direction of the polarized light can be adjusted by controlling the rotation of the center axis C of the image sensor with the rotation axis of the image sensor, so that the contrast and darkness of the image can be controlled or noise can be removed, And a stereoscopic image of the subject A having a high resolution can be obtained. Preferably, when the waves of the polarized light having passed through the polarization filters 130 and 133 are controlled so as to be mutually perpendicular, a sharp, high resolution stereoscopic image of the subject A can be obtained. The method of controlling the polarization direction using the polarization filters 130 and 133 includes a method of rotating a polarization filter as well as a method of controlling an electronic polarization.

2B is a view showing a configuration in which a polarizing filter 133 is added between the transparent substrate 140 and the image sensor 110. FIG. As described above, the transparent substrate 140 can prevent the image sensor from being contaminated, while scattering or reflecting light may be generated, resulting in a problem that the resolution of the stereoscopic image is lowered. In this case, a polarizing filter 133 may be additionally disposed between the transparent substrate 140 and the image sensor 110 as shown in FIG. 2 (b), thereby solving the problem of resolution degradation of the stereoscopic image. Of course, it is also possible to control polarization and contrast by rotating one of the polarization filters 130 and 133 with the central axis C of the image sensor as a rotation axis. FIG. 3 is a view showing a configuration in which a plurality of light sources are provided in the real-time stereoscopic imaging apparatus according to the present invention shown in FIG. 1, and includes an image sensor 110 and a polarization filter 130 And a plurality of light sources 220 are provided in place of the pair of light sources 120 shown in FIG. 1, that is, the structure in which the transparent substrate 140 and the color filter 150 are further included. .

3, in the real-time stereoscopic image pickup apparatus according to the present invention, a plurality of light sources (for example, two light sources) are arranged symmetrically on both sides of the center axis C of the image sensor 110, A pair of light sources 221a and 222a or 221b and 222b having the same distance with respect to the central axis C of the image sensor 110 are paired and a selected one of the pair of light sources Only the light sources of the pair are alternately turned on and off so that the binocular parallax can be controlled by selectively blinking a plurality of light source pairs having different distances from each other.

In other words, the plurality of light sources 220 are arranged on the basis of the center axis C of the image sensor 110 and the plurality of left light sources 221 arranged on the left side with respect to the center axis C of the image sensor 110 And the left light source 221 and the right light source 222 are symmetrical with respect to the center axis C in the left and right direction.

The left and right light sources 221a and 222a correspond to each other on the same distance from the center axis C of the image sensor 110. The left and right light sources 221a and 222a correspond to the center axis C, Left and right light sources 221 and 222 corresponding to each other on the same distance form a pair and a plurality of light source pairs 221a and 222a, 221b and 222b having different distances from each other exist.

Herein, the plurality of light source pairs 221a and 222a, 221b and 222b are for controlling the binocular parallax, and only a selected pair of light sources are alternately blinked. For example, from the initial center axis C When a pair of light sources 221a and 222a disposed on the closest distance is selected, only the selected pair of light sources 221a and 222a are alternately blinked to generate a stereoscopic image of the subject A having binocular parallax The other pair of light sources 221b and 222b located farther from the center axis C than the pair of light sources 221a and 222a are selected and selected when the stereoscopic effect of the observed stereoscopic image is somewhat small The binocular parallax can be adjusted by alternately blinking only the other pair of light sources 221b and 222b.

There is no particular limitation on the number of the plurality of light sources 220 or the distance between the light sources 220. The degree of the binocular parallax can be adjusted according to the size and type of the subject, It is a matter of course that various adjustments can be made within the range.

1, the real-time stereoscopic image photographing apparatus according to the present invention includes a separate driving device (not shown) for individually moving the pair of light sources 121 and 122 (see FIG. 1) By selectively flickering the plurality of light sources 220 arranged symmetrically with respect to the central axis C with respect to the center axis C and without being paired with each other, the binocular parallax can be easily controlled by a simple structure.

3, the plurality of light sources 220 may be arranged symmetrically with respect to the central axis C in the left and right directions, i.e., the Y axis direction, but the present invention is not limited thereto, And may be arranged to be symmetrical with respect to the axis C in the '+' shape, that is, the Y axis and the Z axis, respectively, and may be arranged in a radial manner.

Even when a plurality of light sources 220 are arranged in a '+' shape or a 'radial' shape, only a pair of light sources which are disposed on the same distance with respect to the central axis C and symmetrical to each other are selectively blinked, It is possible to adjust the parallax or to generate a stereoscopic image of the subject A at various angles.

The real-time stereoscopic imaging apparatus according to an embodiment of the present invention may further include an imaging optical system 160 and a microscopic optical system 170, as shown in FIGS.

The imaging optical system 160 is disposed between the image sensor 110 and the transparent substrate 140 to converge light incident on the image sensor 110 through the object A as shown in FIG.

The imaging optical system 160 is installed so as to be exchangeable. A suitable lens can be selected and installed in consideration of the observation purpose, the type of the subject, the distance to the subject, and the like, and includes a zoom lens can do.

Such an imaging optical system 160 can adjust the angle of view according to the magnification by enlarging / reducing the subject A, and by adjusting the focus range of the subject A, it is possible to generate a higher-resolution stereoscopic image.

The microscope optical system 170 may be disposed between the image sensor 110 and the transparent substrate 140 as shown in Fig.

The microscope optical system 170 may include an image-forming lens 171, an eyepiece 172 and an objective lens 173 and may include a subject A (see FIG. 1) formed by left and right light sources 221 and 222, The left side image and the right side image of the subject are further enlarged and detected through the image sensor 110, thereby making it possible to generate a more precise stereoscopic image of a subject such as a cell having a fine structure. At this time, the objective lens 173 is configured to be replaceable so that the magnification of the subject A can be adjusted.

Here, in the case of the real-time stereoscopic imaging apparatus according to the present invention, which further includes the microscopic optical system 170, the eyepiece lens 172 and the objective lens 171 without the image-forming lens 171 constituting the image sensor 110 and the microscope optical system 170, It is also possible to provide a stereoscopic image of the subject A by observing only the lens 173 directly.

5, when the image sensor 110 and the image-forming lens 171 are removed, the stereoscopic image taking apparatus according to the present invention has the same structure as that of a general transmissive- And the microscope optical system 172 and 173 from which the image-forming lens 171 is removed, the image of the subject A can be observed directly in a single eye.

However, the stereoscopic photographing apparatus according to the present invention differs from the conventional stereoscopic photographing apparatus in that a pair of light sources selected in comparison with a general transmissive photographing apparatus includes a plurality of light sources 220 and a polarizing filter 130 alternately flickering, The light generated from the left light source 221 and the right light source 222 passes through the object A and is transmitted through the objective lens 173 and the eyepiece lens 172 to the observer's eye To form a left image and a right image.

At this time, the left image and the right image formed on the observer's eye are alternately and continuously generated according to a cycle in which the pair of light sources 221 and 222 are alternately blinked, and the blinking cycle of the pair of light sources is appropriately The left image and the right image are overlapped by the afterimage effect to generate a stereoscopic image in which the binocular parallax is formed, so that the stereoscopic image of the subject A can be observed even in a single view.

As another example, a polarizing filter may be additionally disposed between the subject A and the image sensor 110. [ 2 and 3. Specifically, in the case of FIGS. 4 and 5, for example, a polarizing filter may be disposed between the subject A and the image sensor 110. In this case,

Hereinafter, the configuration of a real-time stereoscopic imaging apparatus according to another embodiment of the present invention will be described in detail with reference to FIG. 6 to FIG.

FIG. 6 is a view showing a schematic configuration of a real-time stereoscopic imaging apparatus according to another embodiment of the present invention, FIGS. 7 and 8 are side cross-sectional views of a real-time stereoscopic imaging apparatus according to another embodiment of the present invention, FIG. 10 illustrates a structure of a polarized light according to another embodiment of the present invention. FIG. 10 illustrates a structure of a composite polarized light according to another embodiment of the present invention, and only differences from FIGS. 1 and 3 will be described.

6 to 8, the real-time stereoscopic image capturing apparatus according to another embodiment of the present invention includes an image sensor 310, a first light source 320, a second light source 330, a polarization filter 340, A half mirror H, and may further include a color filter 350.

The configuration of the image sensor 310, the first light source 320, the polarization filter 340, and the color filter 350 of the real-time stereoscopic imaging apparatus according to another embodiment of the present invention is the same as that of the image sensor 110 The pair of light sources 120, the polarizing filter 130, and the color filter 150, respectively.

The real time stereoscopic image capturing apparatus according to another embodiment of the present invention may include a second light source 330 disposed vertically to the first light source 320 and may include a second light source 330 disposed between the first light source 320 and the second light source 330 And a half mirror (H) disposed in the half mirror (H).

That is, the first light source 320 includes a first left light source 321 and a second left light source 321, which are installed to be symmetrical with respect to the center axis C of the image sensor 310, 1 light source 322 and the optical axes of the first left light source 321 and the first right light source 322 are installed parallel to the central axis C of the image sensor 310. [

The second light source 330 is installed at right angles to the first light source 320. The second light source 330 is also disposed at the second left side light source 321 corresponding to the first left light source 321 and the first right light source 322, The light source 331 and the second right light source 332 are installed such that the optical axes of the second left light source 331 and the second right light source 332 are orthogonal to the central axis C of the image sensor 310 do.

Here, the second light source 330 is further included to solve the problem that the amount of light decreases as the light generated from the first light source 320 passes through the polarizing filter 340, In order to match the optical path of the generated light and the optical path of the light generated from the second light source 330 arranged perpendicular to the first light source 320 and corresponding to the first light source 320, A half mirror H is provided between the light source 320 and the second light source 330.

The half mirror H passes light generated from the first light source 320 and reflects light generated from the second light source 330 so that the light emitted from the first light source 320 and the light emitted from the second light source 330, So that the light paths of the light beams generated from the half mirror H coincide with each other.

In other words, the light generated from the first light source 320 passes through the half mirror H, is incident on the subject A through the polarizing filter 340, and the light generated from the second light source 330 passes through the half mirror H, The light is incident on the subject A along the same path as the light path of the light generated from the first light source 320 by being reflected by the light source H and being bent at a right angle.

Therefore, even when the amount of light incident on the subject A is reduced by the polarizing filter 340, the amount of light incident on the polarizing filter 340 by the first and second light sources 320 and 330 is doubled, A is generated by a single light source without using a polarizing filter even when the polarizing filter 340 is used to generate an amount of light equivalent to the amount of light incident on the subject A There is an advantage that can be made.

The half mirror H is disposed on the center axis C of the image sensor 310 to match the light path of the light generated from the first light source 320 and the light path of the light generated from the second light source 330, And the half mirror H may be set at an angle of 45 degrees. If necessary, the installation angle of the half mirror H may be varied in order to match the light paths of the lights emitted from the two light sources Of course.

The first light source 320 includes a pair of first left light sources 321 symmetrical with respect to the central axis C of the image sensor 310 and a second right light source 322 symmetrical with respect to the center axis C of the image sensor 310, A plurality of first left light sources 321 and a first right light source 322 symmetrical with respect to the central axis C of the image sensor 310 for controlling the binocular disparity, And each of the light sources on the same distance from the center axis C may be composed of a plurality of light source pairs forming one pair.

The second light source 330 is disposed at a right angle to the first light source 320 and is disposed at a position corresponding to the pair of the first left light source 321 and the first right light source 322, A plurality of first left light sources 331 and a second right light source 332 or a plurality of second left light sources 332 disposed at positions corresponding to the first left light sources 321 and the first right light sources 322, A first right light source 331 and a second right light source 332.

At this time, the plurality of second left light sources 331 and the second right light sources 332 also form one pair of light sources on the same distance from the central axis C, When a selected one of the light sources 320 is alternately blinked, a pair of light sources disposed at positions corresponding to the second light sources 330 are also selected among the first light sources 320 A pair of light sources alternately flickers according to a cycle in which they alternately flicker.

For example, a first left light source 321, a first right light source 322, a second left light source 331, and a second right light source 322 are disposed on the same distance from the center axis C of the image sensor 310, The first left light source 321 and the first right light source 322 form one pair and the second left light source 331 and the second right light source 332 form one pair Respectively.

When the first left light source 321 is turned on, the second left light source 331 corresponding to the first left light source 321 is simultaneously lit, and the light generated from the first and second left light sources 321 and 331 is reflected by the half mirror The first right light source 322 and the second right light source 332 are simultaneously illuminated at the same time when the first and second left light sources 321 and 331 are turned off The light generated from the first and second right light sources 322 and 332 is incident on the subject A on the same optical path through the half mirror H to increase the amount of light, Thereby generating a stereoscopic image in which the stereoscopic image is formed.

Here, in the present invention, the polarizing filter 340 is included to prevent the image of the stereoscopic image from being blurred by the reflected light and the scattered light generated by reflecting or scattering the light incident on the subject A. In the present embodiment, The polarized light filter 340 may be installed on the optical path through which light generated from the first and second light sources 320 and 330 passes through the half mirror H and is incident on the subject A. 8, a first polarizing filter 341 is disposed on a light path where light generated from the first light source 320 is incident on the half mirror H, and a second polarizing filter 341 is disposed on the second light source 330, The second polarizing filter 342 may be provided on the optical path in which the light generated from the half mirror H is incident. 2, a further third polarizing filter may be further disposed between the subject A and the image sensor 310. In this case,

In this case, when the polarizing filter 340 is installed on the optical path through which the light generated from the first and second light sources 320 and 330 passes through the half mirror H and enters the subject A, Only light that is composed of waves that oscillate in one and the same direction as the light generated from the first light source 320 and the second light source 330 pass through the same polarizing filter 340, A).

On the other hand, when the polarized light filter 340 is individually provided on the optical path where the light generated from the first and second light sources 320 and 330 is incident on the half mirror H, The first polarizing filter 341 and the second polarizing filter 342 are configured to generate polarized light that vibrates in different directions so that two kinds of polarized light vibrating in different directions are incident on the half mirror H So that the composite polarized light can be made incident on the subject A. In this case,

In this case, it is possible to generate a stereoscopic image having a brighter image resolution regardless of the direction of the light incident on the object A, as well as to generate a brighter, higher-resolution stereoscopic image by the composite polarized light.

The first light source 320 and the second light source 330 may be provided with light sources having different characteristics. For example, when a minute cell is photographed, the first light source 320 and the second light source 330 irradiate The wavelengths of light are different from each other, but the wavelength of any one of the light sources can be made shorter. Also, in the illumination method of irradiating light, the first light source 320 and the second light source 330 having different wavelengths are used together to add two kinds of illumination, or the first light source 320 and the second light source 330 330 may be selected and used.

Meanwhile, the real-time stereoscopic image pickup apparatus according to the present invention is a real-time stereoscopic image capturing apparatus according to the present invention, in which left and right images alternately generated by the image sensors 110 and 310 are displayed in a 3D viewer (i.e., A 3D monitor, a 3D TV, a 3D screen, etc.), or may be used in conjunction with a device capable of storing, transmitting, and analyzing stereoscopic images in a digital form.

In the real-time stereoscopic image pickup apparatus according to the present invention, the image generated while the left light source emits light constitutes a left image with the left image, the image generated while the right light source emits light forms a right image with the right image At this time, by changing the left image and the right image to each other, it is possible to change the viewing direction of the subject from the bottom to the top or from top to bottom. Thus, without any special operation such as reversing the subject, The direction can be changed easily.

The real-time stereoscopic image capturing apparatus according to the present invention can be mounted on an apparatus for capturing a stereoscopic image of a subject, and can be used for a camera, a microscope, an X-ray photographing apparatus, a CCTV, a navigation system, A test device, a smartphone camera, an endoscope, a laparoscope, and the like, but is not limited thereto.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be clear to those who have knowledge. Therefore, the scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and range of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

[Description of Symbols]

A: Sample C: Center axis

H: half mirror 110, 310: image sensor

120, 220, 320, 330: a light source 130, 340: polarizing filter

140: transparent substrate 150: color filter

160: imaging optical system 170: microscope optical system

Claims (24)

A real-time stereoscopic image photographing apparatus for photographing a subject in three dimensions, An image sensor disposed adjacent to the subject to detect light irradiated to the subject and to image the image; A left and a right light source spaced left and right with respect to a central axis of the image sensor; And And at least one polarizing filter installed on the path of light transmitted from the left and right light sources to the image sensor, Wherein the left and right light sources Wherein the first and second light sources are alternately blinked to form a binocular parallax, and the separation distance between the left light source and the right light source is adjustable. The method according to claim 1, The polarizing filter Wherein at least one of the left and right light sources and the subject, and between the subject and the image sensor are disposed. The method according to claim 1, The light source includes: Wherein the left and right light sources are disposed symmetrically with respect to a center axis of the image sensor, and the left and right light sources are disposed symmetrically with respect to the center axis of the image sensor, Wherein a left light source and a right light source at the same distance from the central axis of the image sensor are paired and the left and right light sources of a selected one of the pair of light sources are alternately blinked. Device. The method of claim 3, The plurality of light sources include: Wherein the image sensor is disposed in a '+' shape or a 'radial' shape with respect to the central axis of the image sensor. The method according to claim 1 or 3, Wherein the image frame obtained from the image sensor and the left and right light sources are synchronized with each other to generate an image in each frame every time the left and right light sources alternately flash, An image generated during the light emission of the left light source forms a left image of the stereoscopic image with the left image, Wherein the image generated during the light emission of the right light source is a right image and forms a right image of the stereoscopic image. 6. The method of claim 5, Wherein the image frame and the left and right light sources are synchronized, The blinking period of the left and right light sources is adjustable, Wherein the left and right images are alternately generated in succession. The method according to claim 1 or 3, Wherein the polarizing filter comprises: Wherein the polarized light is generated on the path of light transmitted from the left light source and the right light source to a subject so as to generate polarized light in the same direction or generate polarized light in waves in different directions, Device. The method according to claim 1 or 3, Between the image sensor and the polarizing filter, Further comprising a transparent substrate provided to support the subject. The method according to claim 1 or 3, Between the left and right light sources and the polarizing filter, Wherein the color filter further comprises a color filter. 9. The method of claim 8, Between the image sensor and the transparent substrate, Further comprising an imaging optical system. 9. The method of claim 8, Between the image sensor and the transparent substrate, Further comprising a microscope optical system. The method according to claim 6, The left and right images, A 3D viewer including a 3D monitor, a 3D TV, and a 3D screen designed to emit a left-side image and a right-side image separately to the left and right eyes of a person, Wherein the stereoscopic image is interlocked with a device capable of storing, transmitting, and analyzing stereoscopic images in a digital form. 13. The method of claim 12, Wherein the viewing direction of the subject can be changed by displaying the left image and the right image interchanged with each other. 1. A photographing apparatus for three-dimensionally photographing a subject, An image sensor disposed adjacent to the subject to detect light irradiated to the subject and to image the image; A first light source disposed left and right with respect to a central axis of the image sensor, the first light source being symmetrical with respect to the center axis; A second light source that is installed to be spaced left and right with respect to a center axis of the image sensor and that is symmetrical with respect to the central axis and is disposed at right angles to the first light source; A half mirror disposed between the first light source and the second light source for allowing light generated from the first light source to pass therethrough so as to be incident on the subject and reflecting light generated from the second light source to be incident on the subject, ; And And a polarizing filter disposed on a path of light passing through the half mirror or reflected by the subject, Wherein the first light source and the second light source include: Wherein the left light source and the right light source are alternately flickered with respect to the center axis of the image sensor to form a binocular parallax, and the separation distance between the left light source and the right light source is adjustable. 15. The method of claim 14, The first light source includes: And a plurality of first left light sources and first right light sources installed to be symmetrical with respect to a central axis of the image sensor, The second light source includes: A second left light source and a second right light source which are disposed to be symmetrical with respect to a center axis of the image sensor so as to be spaced apart from each other by a predetermined distance so as to correspond to the first left light source and the first right light source, ≪ / RTI > A first right light source and a second right light source are paired with a first left light source and a second left light source located at the same distance from the central axis, Wherein a pair of the left and right light sources of the selected pair of light sources is flickered alternately in the left and right direction. 15. The method of claim 14, Wherein the light generated by the first light source and passed through the half mirror and the light generated by the second light source and reflected by the half mirror are incident on the object through the same optical path. 15. The method of claim 14, Wherein the polarizing filter comprises: A second mirror disposed on a path of light generated from the first light source and incident on the half mirror, Wherein the light source is installed on a path of light generated from the second light source and incident on the half mirror. 18. The method of claim 17, A first polarizing filter disposed on a path of light generated from the first light source and incident on the half mirror; A second polarizing filter provided on a path of light generated from the second light source and incident on the half mirror, And generates polarized light composed of waves having the same or different directions from each other. The method according to any one of claims 1, 3, and 14, The image sensor, the light source, and the polarizing filter are modularized into a single module, Wherein the plurality of modules are arranged at regular intervals so that a plurality of subjects can be observed at the same time or a plurality of object images can be simultaneously generated and recorded. 20. The method of claim 19, In the module, And a connection terminal is provided to detachably attach the image sensor so that the image sensor can be used by being replaced. 21. The method of claim 20, Wherein, Wherein the image sensor is disposed adjacent to the image sensor so as to correspond one-to-one with the image sensor, and attaches an image sensor in which the subject is disposed adjacent to the module to observe the subject. 15. The method of claim 14, The real-time stereoscopic photography apparatus Wherein a third polarizing filter is further disposed between the subject and the image sensor. The method according to any one of claims 1, 2, 14, 17, 18 and 22, Wherein at least one of the polarizing filter, the first polarizing filter, the second polarizing filter, and the third polarizing filter rotates to control polarization and lightness. The method according to claim 1 or 14, Wherein the left light source and the right light source irradiate light of a different wavelength band to the subject or the first light source and the second light source irradiate light of a different wavelength band to the subject.

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