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WO2019098447A1 - Système d'imagerie à échelles multiples avec miroir rotatif - Google Patents

Système d'imagerie à échelles multiples avec miroir rotatif Download PDF

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Publication number
WO2019098447A1
WO2019098447A1 PCT/KR2017/014282 KR2017014282W WO2019098447A1 WO 2019098447 A1 WO2019098447 A1 WO 2019098447A1 KR 2017014282 W KR2017014282 W KR 2017014282W WO 2019098447 A1 WO2019098447 A1 WO 2019098447A1
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Prior art keywords
lens
image
mirror
main
central axis
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PCT/KR2017/014282
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English (en)
Korean (ko)
Inventor
임천석
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Institute for Industry Academia Cooperation of Hannam University
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Institute for Industry Academia Cooperation of Hannam University
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Priority claimed from KR1020170153467A external-priority patent/KR101957357B1/ko
Priority claimed from KR1020170153464A external-priority patent/KR101957353B1/ko
Application filed by Institute for Industry Academia Cooperation of Hannam University filed Critical Institute for Industry Academia Cooperation of Hannam University
Publication of WO2019098447A1 publication Critical patent/WO2019098447A1/fr
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems

Definitions

  • the present invention relates to an optical system of a camera, and more particularly, to a rotatable multi-scale imaging system for a mirror that generates a high resolution image using a low resolution image sensor array.
  • Group refers to a digital image of a second resolution pixel image is composed of 10 9 or more pixels.
  • Gigapixel images are created by compositing hundreds to thousands of elementary photographs from a megapixel image sensor into a single photograph.
  • the neighboring element pictures photographed from the megapixel image sensor are superimposed on each other and the superimposed regions are connected to each other, thereby completing a large-scale pixel photograph as a whole.
  • the process of converting hundreds or even thousands of megapixel element photos into a single gigabyte-class photo is a process of synthesizing overlapping areas in a way that does not reveal the seams by means of so-called image stitching, It is a process to produce.
  • the main features of this system are a ball-shaped 6cm air-core objective lens and a set of 98 micro-scopic cameras.
  • This camera does not need to focus on one part when taking a picture, but zooms in on a specific part after taking the whole scene.
  • the enlarged portion of the zoom-in has an extremely high resolution that does not break a pixel and shows sharp image quality. Once the entire image is taken in one shot, the user can zoom in freely to select a desired image area.
  • the elemental images obtained from the megapixel-level micro-scopic camera are synthesized with each other and re-created as one gigantic pixel image.
  • the Duke technology was the first in the world to construct a gigapixel lens system using an objective lens of eccentricity and 98 micro-scopic camera lenses, and obtained 1.2 gigapixel images (camera name: AWARE 1).
  • AWARE 40 camera has been developed up to three AWARE 40 cameras and has a resolution of 10 gigapixels in a 100 ° ⁇ 60 ° viewing angle range (see Patrick Llull, Lauren Bange, Zachary Phillips, Kyle Davis, Daniel L. Marks, and David J. Brady, " Characterization of the AWARE 40 wide-field-of-view visible imager, " Optica 2, 1086-1089 (2015)).
  • the volume is also several times smaller than that of a miniature refrigerator, as hundreds of microscopic cameras are required, far more than 98.
  • Patent Document 1 Korean Patent No. 10-1402449
  • Patent Document 2 Korean Patent Publication No. 10-2013-7006685
  • Patent Document 3 Korean Patent Publication No. 10-2013-0141462
  • the two mirrors are rotated at a predetermined angle according to the incident position of the principal ray, so that even if the main ray enters at any angle and position, it is incident parallel to the second central axis of the second lens, And to provide a multi-scale imaging system capable of generating a multi-scale imaging system.
  • an object of the present invention is to provide a multi-scale imaging system capable of performing multi-scale imaging.
  • the present invention relates to an image pickup apparatus comprising a first lens for converting an object of an object plane into an entire image of a first image plane;
  • a second lens disposed at a distance from the first central axis of the first lens and having a second central axis;
  • a first lens disposed on the first image plane at a first central axis of the first lens and dividing the entire image of the first image plane into a plurality of divided images in the form of a matrix, Main 2-Degree-of-Freedom Mirror;
  • a second two-degree-of-freedom mirror disposed at a second central axis of the second lens and providing a divided image reflected by the main two-degree-of-freedom mirror as a center thereof to the second lens;
  • an image sensor array that generates a split image that is reflected by the main 2-DOF mirror and the auxiliary 2-DOF mirror on a second image plane of the second lens, and captures the generated split image
  • the auxiliary two-degree of freedom mirror forms a virtual split image on a virtual object plane on a second central axis of the second lens to transfer the provided split image to a second lens
  • the virtual divided image is arranged in a virtual object plane of the second lens, and functions as an image pickup target of the second lens,
  • the second lens treats the divided image of the first lens as a virtual divided image to image the divided image
  • the trajectory of the rotation angle? of the main two-degree-of-freedom mirror is obliquely up and down and shows a left-right plus or minus symmetry
  • the trajectory of the rotational angle?' Of the auxiliary two-degree-of-freedom mirror is an obliquely upward and downward shape and represents left and right plus and minus symmetry .
  • the image sensor array is a plurality of image sensor arrays, and the image sensor array is disposed in a second image plane of the second lens, and the divided images are scanned sequentially, And is imaged onto the image sensor array.
  • the imaging system further comprises a linear motion part for moving the auxiliary two-degree-of-freedom mirror in the second central axis direction.
  • the imaging system further comprises a diaphragm disposed between the auxiliary two-degree of freedom mirror and the second lens, wherein neighboring divided images have areas overlapping with each other .
  • the first lens is characterized in that the incoming and outgoing are formed at different positions.
  • the positions of the entrance pupil, the exit pupil, and the aperture stop may be the same.
  • the present invention also relates to an image pickup apparatus comprising a first lens for converting an object of an object plane into an entire image of a first image plane;
  • a second lens disposed at a distance from the first central axis of the first lens and having a second central axis;
  • a first lens disposed on the first image plane at a first central axis of the first lens and dividing the entire image of the first image plane into a plurality of divided images in a matrix form, 2 < / RTI > And
  • an image sensor array for generating a split image reflected by the main 2-DOF mirror on a second image plane of the second lens, and capturing the generated split image
  • the main two-degree-of-freedom mirror forms a virtual division image on a virtual object plane on a second central axis of the second lens to transfer the provided divided image to a second lens
  • the virtual divided image is arranged in a virtual object plane of the second lens, and functions as an image pickup target of the second lens,
  • the second lens treats the divided image of the first lens as a virtual divided image to image the divided image
  • the trajectory of the rotational angle? Of the degree of freedom mirror represents a concentric circular shape that is bilaterally symmetrical, and the trajectory of the rotational angle? Of the main 2-degree-of-freedom mirror is obliquely upward and downward and shows left and right plus and minus symmetry. to provide.
  • the image sensor array is a plurality of image sensor arrays, and the image sensor array is disposed in a second image plane of the second lens, and the divided images are scanned sequentially, And is imaged onto the image sensor array.
  • the imaging system is characterized by having an aperture stop on the main 2-DOF mirror. Since the optical structure in which the principal rays originating from the subject are always incident on the center of the main 2-degree-of-freedom mirror is established, the main 2-degree-of-freedom mirror functions as an auxiliary 2- An imaging system can be implemented.
  • the first lens may be a convex lens, a concave lens, or a flat glass window.
  • the present invention can provide a multi-scale imaging system capable of miniaturization and easily obtaining gigapixel images.
  • the present invention can provide a gigapixel lens system capable of miniaturization by combining two biaxial driving actuators and a plurality of image sensor arrays.
  • the present invention can provide a gigapixel lens system that can be miniaturized by combining a two-axis drive actuator and a plurality of image sensor arrays.
  • the mirror is rotated at a predetermined angle in accordance with the incident position of the principal ray, so that even when the main ray enters at any angle and position, it is incident parallel to the second central axis of the second lens to generate a divided image on the second image plane can do.
  • FIG. 1 shows an embodiment of a general imaging system.
  • FIG. 2 is a conceptual diagram illustrating a divided image according to an embodiment of the present invention.
  • FIG 3 shows an imaging system according to an embodiment of the present invention.
  • FIG. 4 is a conceptual diagram illustrating an imaging system according to an embodiment of the present invention.
  • Figure 5 illustrates an imaging system with a rotatable mirror according to one embodiment of the present invention.
  • FIG. 6 shows a light beam structure of an imaging system having a rotatable mirror according to an embodiment of the present invention.
  • Figure 7 shows various embodiments of the first lens of the present invention.
  • FIG. 8 is a view showing the sign of the direction of rotation of the mirror system according to an embodiment of the present invention.
  • FIG. 12 shows the trajectory of the rotational angle of the mirror according to the horizontal (horizontal axis) and vertical (vertical axis) incidence angles of principal rays incident on the imaging system of the present invention.
  • the position of the aperture stop may be in the main 2-DOF mirror, with or without the first lens in front of the main 2-DOF mirror.
  • PR denotes a principal ray
  • the principal ray enters the center of the main two-degree-of-freedom mirror at an angle of x degrees and y degrees with respect to the optical axis.
  • the main 2-degree-of-freedom mirror must be rotated by degrees and beta in order to align and align the principal ray with the second central axis of the second lens.
  • 15 and 16 show the rotation angle of the mirror according to the horizontal (horizontal axis) and vertical (vertical axis) incidence angles of principal rays incident on the imaging system of the present invention.
  • FIG 17 shows the trajectory of the rotation angle of the mirror according to the horizontal (horizontal axis) and vertical (vertical axis) incidence angles of principal rays incident on the imaging system of the present invention.
  • 18 is an embodiment of the present invention applied to a smartphone camera.
  • FIG. 2 is a conceptual diagram illustrating a divided image according to an embodiment of the present invention.
  • the first lens 110 is an objective lens of a camera.
  • the first lens 110 may be composed of one or more lenses.
  • the first lens 110 has a first central axis.
  • the object plane is a plane on which an object to be imaged exists.
  • the principal ray is a ray passing through the center of the first lens.
  • the first image plane is a plane on which the image of the first lens 110 is formed. The distance from the center of the first lens 110 to the first image plane may be larger or smaller than the focal length of the first lens 110.
  • the principal rays may be displayed in a matrix form in the image plane.
  • an object to be imaged which is at a sufficiently long distance can be converted to an image of an image plane disposed at a position close to the focal length of the first lens.
  • a large size image In order to obtain a large size image, if a large size image sensor array is disposed in the image plane, a large size image can be realized. However, implementing a large-sized image sensor array is physically limited. In order to overcome these limitations and implement a large size image, the entire image may be divided into a predetermined size based on the principal ray point arranged in a matrix form on the image plane to form a divided image.
  • the divided images are shown as a 5x5 matrix, but the present invention is not limited thereto and can be modified into various structures.
  • each of the split images is reflected by a main 2-DOF mirror and an auxiliary 2-DOF mirror to produce a split image in a second image plane.
  • the divided image generated in the second image plane is captured through a typical megapixel image sensor array, and a high resolution image can be obtained by changing the captured divided image.
  • FIG 3 shows an imaging system according to an embodiment of the present invention.
  • a rotatable imaging system of the present invention comprises: a first lens (110) for converting an object of an object plane into an entire image of a first image plane; A second lens 140 disposed at a distance from the first central axis of the first lens 110 and having a second central axis; A first lens disposed on the first image plane at a first central axis of the first lens and dividing the entire image of the first image plane into a plurality of divided images in a matrix form, A main two-degree-of-freedom mirror 120 for reflecting the light beam; Two-degree-of-freedom, which is disposed at the second central axis of the second lens 140 and serves as a center of the divided image reflected by the main 2-degree-of-freedom mirror 120 and provides the split image to the second lens 140 A mirror 130; And a split image that is reflected by the main 2-DOF mirror (120) and the auxiliary 2-DOF mirror (130) in a second image plane of the second lens (140)
  • the image sensor array 150 includes a plurality
  • the first lens may be a convex or concave lens and may be composed of one or more lenses.
  • the first lens converts the object of the object plane into an entire image of the first image plane.
  • the second lens is disposed apart from the first central axis of the first lens and has a second central axis. And the second lens produces a segmented image on the second image plane of the second lens reflected by the main 2-DOF mirror and the auxiliary 2-DOF mirror.
  • the first lens has a first central axis
  • the second lens has a second central axis
  • the first central axis and the second central axis can be arranged in a straight line.
  • the main 2-DOF mirror is disposed in the first image plane at a first central axis of the first lens, and divides the entire image of the first image plane into a plurality of split images in the form of a matrix, Select one of the images to reflect.
  • the auxiliary two-degree-of-freedom mirror is disposed at the center axis of the second lens and provides a divided image reflected by the main two-degree-of-freedom mirror as a center thereof to the second lens.
  • the image sensor array captures a split image on the second image plane in a split image that is reflected by the main 2-DOF mirror and the auxiliary 2-DOF mirror.
  • the image resolution is low. Therefore, in order to obtain a high resolution image with a megapixel level image sensor, it is necessary to sequentially capture each divided image with a megapixel level image sensor.
  • the plurality of image sensor arrays may be arranged in a matrix form on the second image plane of the second lens.
  • the image sensor array can be sequentially picked up in accordance with the scanning order, and the enlarged divided image is sequentially picked up by the image sensor array as the divided image is scanned.
  • the present invention does not capture the whole image at a time but captures the divided images generated in the second image plane through the main two-degree-of-freedom mirror and the auxiliary two-degree-of-freedom mirror, .
  • each divided image imaged by a megapixel image sensor is synthesized into a single image by the image synthesis technique called image stitching, and becomes a gigapixel image.
  • a high-resolution image can be obtained without greatly increasing the volume or thickness of the system.
  • the first through third principal rays (a, b, c) passing through the center of the first lens 110 form respective principal ray points in the first image plane.
  • the entire image can be divided into divided images of the same size based on the principal ray point.
  • the main 2-DOF mirror 120 is disposed in the first image plane at the first central axis of the first lens 110.
  • the main two-degree-of-freedom mirror 120 is arranged obliquely with respect to the first central axis, and a pair of coordinate axes (x 'axis and y' axis) perpendicular to the arrangement plane (x'y 'plane) To provide a tilt. Accordingly, the selected one divided image 2b is transmitted to the center of the auxiliary two-degree of freedom mirror 130 by the main two-degree of freedom mirror 120.
  • the unselected divided images a and c are not transmitted to the center of the auxiliary two-degree-of-freedom mirror 130, so that a divided image formed by the second lens 140 can not be formed.
  • the auxiliary 2-DOF mirror 130 may be aligned with the main 2-DOF mirror 120 in the x-axis direction.
  • the auxiliary two-degree-of-freedom mirror 130 may be disposed on the second central axis of the second lens 140.
  • the auxiliary two-degree-of-freedom mirror 130 is arranged on the left side of the second center axis of the second lens 140 to transmit the transferred divided image 2b to the second lens 140, ').
  • the secondary two-degree of freedom mirror 130 rotates about a pair of coordinate axes (x "and y" axes) perpendicular to its plane of placement (x "y" .
  • the virtual divided image 2b ' is disposed in a virtual object plane of the second lens 140 and can function as an image pickup object of the second lens 140.
  • the divided image 2b based on the principal ray b is divided into the virtual division image 2b '.
  • the virtual divided image 2b ' is transmitted to the divided image 3b by the second lens 140.
  • the distance from the center of the main 2-DOF mirror 120 to the center of the auxiliary 2-DOF mirror 130 is MD. Also, the distance from the virtual divided image 2b 'to the center of the auxiliary 2-DOF mirror 130 is also MD.
  • FIG. 4 illustrates an imaging system in accordance with an embodiment of the present invention.
  • the first lens 110 may be a single lens or a plurality of lenses.
  • the first lens 110 may include a convex lens or a concave lens.
  • the first lens 110 has a first central axis passing through the center thereof.
  • the first lens 110 is an imaging lens, and a viewing angle can be defined.
  • a principal ray passing through the center of the first lens 110 forms a principal ray spot in the form of a matrix in the first image plane of the first lens.
  • the set of principal ray points within the range of viewing angles form the entire image.
  • Video resolution is low. Therefore, in order to obtain a high-resolution image with a megapixel level image sensor, it is necessary to sequentially image each divided image to a megapixel level image sensor. In order to transfer each split image to the second image plane of the new second lens 140, a light transmission structure is required. To this end, a pair of 2-DOF mirrors may be used.
  • the second lens 140 splits the divided image reflected by the main 2-degree of freedom mirror 120 and the auxiliary 2-degree of freedom mirror 130 into a second image plane of the second lens 140, .
  • the second lens 140 can treat the split image 2b of the second lens 110 as a virtual object image to generate the divided image 3b.
  • the virtual object image is a virtual divided image 2b '.
  • the first central axis of the first lens 110 and the second central axis of the second lens 140 may be parallel to each other.
  • the first lens and the second lens can have a focus adjustment function by adjusting the distance between lenses by a focus ring.
  • the main 2-DOF mirror 120 can independently rotate about two axes perpendicular to each other in the arrangement plane of the main 2-DOF mirror.
  • the main 2-DOF mirror 120 transmits each divided image to the center of the auxiliary 2-DOF mirror 130.
  • the main two-degree-of-freedom mirror 120 can rotate based on two vertical axes (x ', y') perpendicular to the plane of its arrangement.
  • the main 2-DOF mirror 120 can transmit the selected split image to the center of the auxiliary 2-DOF mirror 130.
  • the main 2-DOF mirror 120 may include a main 2-DOF mirror driver 122 that provides a tilt.
  • the auxiliary two-degree of freedom mirror 130 can be independently rotated about two axes perpendicular to each other in the arrangement plane of the auxiliary two-degree of freedom mirror.
  • the split image transmitted to the center of the auxiliary 2-DOF mirror must be transmitted to the second image plane of the second lens 140.
  • the auxiliary two-degree-of-freedom mirror 130 may rotate about two vertical axes (x ", y ") in its arrangement plane.
  • the auxiliary 2-DOF mirror 130 may include an auxiliary 2-DOF mirror driver 132 capable of adjusting the tilt.
  • the main 2-DOF mirror 120 is inclined at 45 ° with respect to the first central axis, and the auxiliary 2-DOF mirror 130 is disposed at an angle of 45 ° with respect to the second center axis.
  • the principal ray (b) incident on the center of the main 2-degree of freedom mirror is transmitted to the center of the auxiliary 2-degree of freedom mirror without rotation of the main 2-degree of freedom mirror, It can be incident on the center of the lens. That is, the principal ray (b) incident parallel to the first central axis of the first lens 110 can travel parallel to the second central axis of the second lens without rotation of the two mirrors.
  • principal rays (a, c) incident at a certain angle with the first central axis of the first lens are incident at a position deviated from the center of the main two-degree-of-freedom mirror, and the incident principal ray is focused on the center It is necessary to rotate the main two-degree-of-freedom mirror by a certain angle.
  • the auxiliary DOF mirror in order to transmit the principal ray incident on the center of the auxiliary 2-DOF mirror through the rotation of the main 2-DOF mirror to the center of the second lens, the auxiliary DOF mirror must be rotated by a certain angle. That is, principal rays a and c which are not incident parallel to the first central axis of the first lens 110 can travel parallel to the second central axis of the second lens through rotation of the two mirrors.
  • the auxiliary two-degree-of-freedom mirror 130 adjusts the slope of the divided image (or the virtual divided image) to transmit the divided image to the second image plane, the second lens 140 and the virtual divided image 2b '
  • the object distance may be different for each divided image.
  • the auxiliary two-degree of freedom mirror 130 can linearly move in the second central axis direction of the second lens so as to secure the same object distance.
  • the linear motion unit 134 can move the auxiliary two-degree of freedom mirror 130 in the second central axis direction.
  • the linear motion unit 134 may move the distance calculated by the geometric structure for each divided image.
  • the linear motion unit 134 can perform a high-speed operation using a high-speed voice-coil motor or the like.
  • a diaphragm 142 is disposed between the auxiliary two-degree of freedom mirror 130 and the second lens 140, and neighboring divided images may have areas overlapping with each other by the diaphragm 142.
  • the diaphragm 142 can adjust the size of the opening.
  • the image sensor array 150 is disposed in the second image plane of the second lens 140 to capture the divided image 3b.
  • the image sensor array 150 may be a megapixel-level two-dimensional image sensor.
  • the number of the image sensor arrays 150 may be a plurality, and the number of the divided images may be an integer multiple of the number of the image sensor arrays 150.
  • Each of the image sensor arrays may be disposed spaced apart. As the segmented image is scanned, the segmented image may be sequentially captured in the image sensor array.
  • Each divided image captured by a mega pixel class image sensor is synthesized into one image again by image synthesis technique called image stitching, and becomes a gigapixel image.
  • image stitching image synthesis technique
  • adjacent divided images usually have an overlapping area of 10 to 30 percent.
  • the processing unit 160 may control the main 2-DOF mirror and the auxiliary 2-DOF mirror. In addition, the processing unit 160 may combine the divided images into one image again by an image synthesis technique called image stitching.
  • FIGS 5 and 6 illustrate an imaging system with a rotatable mirror in accordance with one embodiment of the present invention.
  • PR denotes a main ray
  • En (Entrance Pupil) denotes an entrance pupil
  • Ex (Exit Pupil) denotes an exit pupil
  • M1 denotes a main 2-degree freedom mirror
  • M2 denotes an auxiliary 2-degree freedom mirror .
  • the M1 main 2-DOF mirror
  • the M2 auxiliary 2-DOF mirror
  • the incident main beam changes its path while passing through the incident beam, and finally proceeds through various paths as it passes through the beam.
  • a principal ray incident on the first central axis of the first lens is incident on the center of M1 while a principal ray not incident on the first central axis of the first lens in a direction parallel to the first central axis It is incident at a position deviated from the center of M1.
  • the principal ray incident on the center of M1 is transmitted to the center of M2 without rotation of M1 and can enter the center of the second lens without rotation of M2. That is, the main ray incident parallel to the first central axis of the first lens can travel in parallel to the second central axis of the second lens without rotation of the two mirrors, thereby generating respective divided images.
  • the principal ray incident at a predetermined angle with respect to the first central axis of the first lens is incident at a position deviated from the center of M1, and M1 must be rotated by a certain angle in order to transmit the incident principal ray to the center of M2. Further, in order to transmit the principal ray incident on the center of M2 through the rotation of M1 to the center of the second lens, M2 must be rotated by a certain angle. That is, the principal ray which is not incident parallel to the first central axis of the first lens can travel parallel to the second central axis of the second lens through the rotation of the two mirrors.
  • the main two-degree-of-freedom mirror and the auxiliary two-degree-of-freedom mirror are controlled in accordance with the incident position of the principal ray to advance parallel to the second central axis of the second lens at any angle and position, 2 It is very important to be able to create a split image on the image plane.
  • Figure 7 shows various embodiments of the first lens of the present invention.
  • En (Entrance Pupil) denotes an entrance pupil
  • Ex (Exit Pupil) denotes an exit pupil
  • the first lens may be a convex lens, a concave lens, a flat glass window, or the like without limitation.
  • the first lens generally has an entrance pupil and an exit pupil at different positions, and the entrance pupil and the exit pupil position may exist at various positions such as inside the lens and outside the lens.
  • the incident main beam is made to pass through the center of the incident mirror, and ultimately travels along various paths toward the M1 mirror while passing through the center of the exit mirror.
  • FIG. 8 is a view showing the sign of the direction of rotation of the mirror system according to an embodiment of the present invention.
  • M1 denotes a main 2-degree-of-freedom mirror and M2 denotes an auxiliary 2-degree-of-freedom mirror, and a and a 'denote the angles at which the mirror rotates in the yz plane, It represents the angle.
  • ⁇ , ⁇ ', ⁇ and ⁇ ' represent positive values when rotating clockwise and negative values when rotating counterclockwise.
  • M1 (?,?) As an initial position of the mirror is M1 (45 degrees, 45 degrees) and M2 (? ',?') Is M2 (45 degrees, 45 degrees).
  • the principal ray incident on the center of M1 is transmitted to the center of M2 without rotation of M1, and can enter the center of the second lens without rotation of M2. That is, the main ray incident parallel to the first central axis of the first lens can travel in parallel to the second central axis of the second lens without rotation of the two mirrors, thereby generating respective divided images.
  • the principal ray incident at a predetermined angle with respect to the first central axis of the first lens is incident at a position deviated from the center of M1, and M1 must be rotated by a certain angle in order to transmit the incident principal ray to the center of M2. Further, in order to transmit the principal ray incident on the center of M2 through the rotation of M1 to the center of the second lens, M2 must be rotated by a certain angle.
  • the rotational angles of the main 2-DOF mirror and the auxiliary 2-DOF mirror are calculated in advance according to the incident position of the principal ray, and the rotation angle of the two mirrors is adjusted based on the rotation angle. 2 parallel to the second central axis of the lens.
  • the principal ray emerging from the exit pupil is incident on M1.
  • incident principal rays enter the farther from the center of M1.
  • M1 (?,?) As an initial position of the mirror is M1 (45 degrees, 45 degrees) and M2 (? ',?') Is M2 (45 degrees, 45 degrees).
  • the principal ray incident at a predetermined angle with respect to the first central axis of the first lens is incident at a position deviated from the center of M1, and M1 must be rotated by a certain angle in order to transmit the incident principal ray to the center of M2.
  • the value of the rotation angle alpha of M1 is symmetric in the right and left regions from the center of M1, and the value increases as the distance from the center of M1 increases.
  • the numerical value increases as the numerical value increases, and as the numerical value increases toward the lower portion, the absolute value of the numerical value increases as the distance from the center of M1 increases (FIG.
  • the trajectory of the rotation angle alpha of M1 shows a symmetrical concentric circle shape (FIG.
  • the value of the rotation angle? Of M1 is positive and negative symmetry in the left and right regions from the center of M1, and the absolute value of the value increases as the distance from the center of M1 increases.
  • the absolute value of the value decreases as it goes down (Fig. 10).
  • the trajectory of the rotation angle beta of M1 (main 2-degree of freedom mirror) is obliquely up and down and shows left and right plus and minus symmetry (Fig.
  • the principal ray incident on the center of M1 is transmitted to the center of the second lens without rotation of M2, so that the rotation angles ⁇ 'and ⁇ ' are 0 ° (FIG. 11).
  • the value of the rotation angle ⁇ 'of M2 shows the same tendency as the value of the rotation angle ⁇ of M1, and the trajectory of the rotation angle ⁇ ' of M2 shows the same tendency of the trajectory of the rotation angle ⁇ of M1.
  • the value of the rotation angle? 'Of M2 shows the same tendency as the value of the rotation angle? Of M1
  • the trajectory of the rotation angle?' Of M2 shows the same tendency of the trajectory of the rotation angle? Of M1.
  • the rotation of the main two-degree-of-freedom mirror and the auxiliary two-degree-of-freedom mirror are adjusted according to the angle of incidence of the principal ray so that the principal ray is parallel to the second central axis of the second lens So that the divided image can be effectively generated in the second image plane, so that a high-resolution image can be easily obtained.
  • FIG 13 shows an embodiment of the first lens of the present invention.
  • Stop represents the aperture stop
  • M1 represents the main 2-degree freedom mirror.
  • the aperture stop is located at M1. Since the optical structure in which the principal rays originating from the subject are always incident on the center of the main 2-degree-of-freedom mirror is established, the main 2-degree-of-freedom mirror functions as an auxiliary 2- An imaging system can be implemented.
  • the position of the aperture stop may be on the main 2-DOF mirror, with or without the first lens in front of the main 2-DOF mirror.
  • the first lens may be a convex lens, a concave lens, a flat glass window, or the like without limitation.
  • the aperture diaphragm When the aperture diaphragm is located at M1 as shown in Fig. 13, all incident principal rays can enter the center of M1, and it is not necessary to use M2 (auxiliary two-degree-of-freedom mirror) provided in Figs.
  • the M1 main 2-DOF mirror
  • the principal ray parallel to the first central axis is automatically incident on the center of the first center axis and the principal ray incident parallel to the first central axis can be incident on the center of the second lens that forms the divided image without the rotation of M1 . That is, the principal ray incident parallel to the first central axis can be generated in parallel with the second central axis of the second lens without rotation of the M1 mirror, thereby generating respective divided images.
  • M1 In order to transmit the principal ray incident on the center of M1 to the center of the second lens while being parallel to the second center axis of the second lens, M1 Must be rotated a certain angle. That is, the principal ray which is not incident parallel to the first central axis can be made to proceed to coincide with the second central axis of the second lens through the rotation of the M1 mirror.
  • the present invention comprises a first lens for converting an object of an object plane into an entire image of a first image plane; A second lens disposed at a distance from the first central axis of the first lens and having a second central axis; A first lens disposed on the first image plane at a first central axis of the first lens and dividing the entire image of the first image plane into a plurality of divided images in a matrix form, 2 < / RTI > And an image sensor array for generating a split image reflected by the main 2-DOF mirror on a second image plane of the second lens, and capturing the generated split image.
  • M1 represents the main 2-degree-of-freedom mirror
  • alpha represents the angle at which the mirror rotates in the yz plane
  • beta represents the angle at which the mirror rotates in the xz plane.
  • ⁇ and ⁇ represent a positive value when rotating clockwise, and negative values when rotating counterclockwise.
  • M1 (?,?) As an initial position of the mirror is M1 (45 deg., 45 deg.).
  • Principal rays entering in parallel with the first central axis can enter the center of the second lens without rotation of M1. That is, the principal ray entering in parallel to the first central axis advances parallel to the second central axis of the second lens without rotation of the M1 mirror, thereby generating a divided image.
  • M1 in order to transmit incident principal ray having a certain angle with the first central axis to the center so as to coincide with the second central axis of the second lens, M1 must be rotated by a certain angle.
  • the rotation angle of the main 2-degree-of-freedom mirror is calculated in advance according to the angle of incidence of the principal ray, and the rotation angle of the mirror is adjusted based on the angle of rotation, so that the principal ray is parallel to the second central axis of the second lens .
  • 15 to 17 show the rotation angle of the mirror according to the angle of the principal ray incident on the imaging system of the present invention.
  • M1 (?,?) As an initial position of the mirror is M1 (45 deg., 45 deg.).
  • the principal ray incident at an angle with the first central axis must be rotated by a certain angle.
  • the value of the rotation angle alpha of M1 is symmetric in the left and right regions from the center of M1, and the value increases as the distance from the center of M1 increases.
  • the numerical values indicate a negative value as the numerical value increases and the positive numerical value as the numerical value increases toward the downward direction.
  • the trajectory of the rotation angle alpha of M1 shows a symmetrical concentric circle shape (Fig.
  • the value of the rotation angle? Of M1 is positive and negative symmetry in the left and right regions from the center of M1, and the absolute value of the value increases as the distance from the center of M1 increases.
  • the absolute value of the value decreases as it goes down (Fig. 16).
  • the trajectory of the rotational angle beta of M1 (main 2-degree of freedom mirror) is obliquely up and down and shows left and right plus and minus symmetry (Fig.
  • the present invention adjusts the rotation of the main 2-degree-of-freedom mirror according to the incidence angle of the principal ray so that the main ray is parallel to the second central axis of the second lens regardless of the incident angle and position,
  • the divided image can be effectively generated, and thus a high-resolution image can be easily obtained (FIG. 18).
  • the present invention can provide a multi-scale imaging system capable of miniaturization and easily obtaining gigapixel images.
  • the present invention can provide a gigapixel lens system capable of miniaturization by combining two biaxial driving actuators and a plurality of image sensor arrays.
  • the present invention can provide a gigapixel lens system that can be miniaturized by combining a two-axis drive actuator and a plurality of image sensor arrays.
  • the mirror is rotated at a predetermined angle in accordance with the incident position of the principal ray, so that even when the main ray enters at any angle and position, it is incident parallel to the second central axis of the second lens to generate a divided image on the second image plane can do.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Lenses (AREA)

Abstract

La présente invention concerne un système optique d'un appareil photo et, plus spécifiquement, un système d'imagerie avec un miroir rotatif, le système d'imagerie générant une image haute résolution à l'aide d'un réseau de capteurs d'image ayant une faible résolution. La présente invention peut fournir un système d'imagerie pouvant être miniaturisé, et obtenir facilement une image gigapixel. De plus, la présente invention peut fournir un système de lentille gigapixel pouvant être miniaturisé en combinant deux actionneurs d'entraînement biaxial et une pluralité de réseaux de capteurs d'image. En outre, selon la présente invention, deux miroirs étant tournés à un angle prédéterminé selon une position incidente d'un faisceau lumineux principal, le faisceau lumineux principal est incident en parallèle à un second axe central d'une seconde lentille même si le faisceau de lumière principal est incident à n'importe quel angle et n'importe quelle position, ce qui permet de générer une image de segmentation sur un second plan d'image. De plus, la présente invention peut fournir un système de lentille gigapixel pouvant être miniaturisé en combinant un actionneur d'entraînement biaxial et une pluralité de réseaux de capteurs d'image. De plus, selon la présente invention, le miroir étant tourné à un angle prédéterminé selon la position incidente du faisceau lumineux principal, le faisceau lumineux principal est incident en parallèle au second axe central d'une seconde lentille même si le faisceau de lumière principal est incident à n'importe quel angle et n'importe quelle position, ce qui permet de générer une image de segmentation sur un second plan d'image.
PCT/KR2017/014282 2017-11-16 2017-12-07 Système d'imagerie à échelles multiples avec miroir rotatif Ceased WO2019098447A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020170153467A KR101957357B1 (ko) 2017-11-16 2017-11-16 단일 미러를 사용한 멀티스케일 이미징 시스템
KR10-2017-0153467 2017-11-16
KR10-2017-0153464 2017-11-16
KR1020170153464A KR101957353B1 (ko) 2017-11-16 2017-11-16 미러의 회전이 가능한 멀티스케일 이미징 시스템

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CN112101054A (zh) * 2020-09-23 2020-12-18 苏州开视信息科技有限公司 一种使用低分辨率相机读取离散多码的光学系统及方法

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US5959771A (en) * 1995-08-07 1999-09-28 Minolta Co., Ltd. Lens system
KR101288187B1 (ko) * 2004-01-14 2013-07-19 칼 짜이스 에스엠티 게엠베하 반사굴절식 투영 대물렌즈
KR20140131370A (ko) * 2013-03-11 2014-11-12 인텔 코포레이션 Ｍｅｍｓ 스캐닝 미러 시야 제공 방법 및 장치
KR20160091380A (ko) * 2013-11-27 2016-08-02 쑤저우 유니버시티 구조광 조명을 연속적으로 조절 가능한 초고해상도 현미경 이미징 방법 및 시스템
KR101689534B1 (ko) * 2015-11-06 2016-12-26 한남대학교 산학협력단 멀티스케일 이미징 시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959771A (en) * 1995-08-07 1999-09-28 Minolta Co., Ltd. Lens system
KR101288187B1 (ko) * 2004-01-14 2013-07-19 칼 짜이스 에스엠티 게엠베하 반사굴절식 투영 대물렌즈
KR20140131370A (ko) * 2013-03-11 2014-11-12 인텔 코포레이션 Ｍｅｍｓ 스캐닝 미러 시야 제공 방법 및 장치
KR20160091380A (ko) * 2013-11-27 2016-08-02 쑤저우 유니버시티 구조광 조명을 연속적으로 조절 가능한 초고해상도 현미경 이미징 방법 및 시스템
KR101689534B1 (ko) * 2015-11-06 2016-12-26 한남대학교 산학협력단 멀티스케일 이미징 시스템

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112101054A (zh) * 2020-09-23 2020-12-18 苏州开视信息科技有限公司 一种使用低分辨率相机读取离散多码的光学系统及方法

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