KR102573682B1 - Focus Stabilization apparatus of Aerial Camera - Google Patents

Abstract

An apparatus for stabilizing a focus of a camera for taking aerial photographs according to the present invention includes a camera unit, a camera driving unit, and a camera position maintaining unit, wherein the camera unit includes a camera housing, a first camera member, a second camera member, a third camera member, and a second camera member. 4 includes a camera member, a fifth camera member and a damping sheet.

Description

Focus stabilization apparatus of camera for aerial photography {Focus Stabilization apparatus of Aerial Camera}

The present invention relates to a device for stabilizing the focus of a camera, and more particularly, for taking aerial photographs capable of minimizing shaking and vibration applied to the camera and stabilizing the focal position of the camera when adjusting the flight state of the aircraft and the camera shooting angle. It relates to the camera's focus stabilization device.

In general, aerial photography is divided into manned aerial photography taken by directly piloting an airplane and unmanned aerial photography taken with a camera controlled through a wireless receiver in a wirelessly controlled aircraft such as a model helicopter or model airship.

Manned aerial photography as described above requires a plane, filming equipment, and an automatic navigation device as a person moves along the filming area using an airplane equipped with a filming device.

Such manned aerial photography is dangerous to shoot at a low altitude, so the resolution and sharpness of the captured image are deteriorated because the photograph is taken at a high altitude. In addition, by using various devices such as airplanes, high cost and excessive time are required, but if a photographer directly takes a picture while checking the image, vibration on the filming equipment can be minimized.

On the other hand, unmanned aerial photography takes a long time due to the slow movement of the helicopter or model airship, but it is filmed using a model controller that controls the helicopter or model airship and a shooting system that can adjust the shooting equipment.

However, since the conventional aerial photographic apparatus captures video images with a camera in a situation where a lot of vibration occurs, the vibration is transmitted and the focus position is shaken.

In addition, even when shooting with a camera, it was not easy to shoot because it was difficult to accurately maneuver the aircraft because it was filmed while changing the position of the aircraft in order to take pictures at various angles. Since this vibration is transmitted to the camera and the focus of the camera is not stabilized, an improvement is required.

The foregoing technical configuration is a background technology for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Therefore, the technical problem to be achieved by the present invention is to provide a focus stabilization device for an aerial photographic camera that can minimize shaking and vibration applied to the camera when adjusting the flight state of the aircraft and the camera shooting angle and stabilize the focal position of the camera will be.

According to one aspect of the present invention, the camera unit is disposed on the lower portion of the aircraft to photograph the object to be photographed; a camera driving unit having a lower portion coupled to the camera unit and an upper portion disposed below the aircraft to elevate and rotate the camera unit; And an upper part coupled to the aircraft and a lower part connected to the camera driving unit to include a camera position maintaining part for maintaining the camera unit horizontally, wherein the camera unit is coupled to the lower part of the camera driving unit and has four incision spaces. camera housing; a first camera member coupled to the camera housing and disposed in one of the four cutout spaces; a second camera member coupled to the camera housing so as to be perpendicular to the first camera member and disposed in one of the four cutout spaces; a third camera member coupled to the camera housing so as to be perpendicular to the second camera member and disposed in one of the four cutout spaces; a fourth camera member coupled to the camera housing so as to be perpendicular to the third camera member and disposed in one of the four cutout spaces; a fifth camera member coupled to the camera housing so as to be perpendicular to the first to fourth camera members; and a damping sheet provided on the camera housing in an area where the incision space is provided and contacting the first camera member to the fourth camera member to reduce vibration transmitted to the first camera member to the fourth camera member. and wherein the camera driving unit includes: a driving unit body disposed between the camera unit and the camera position control unit; a base body rotatably coupled to the inside of the driving unit body; a lift drive unit having one side coupled to the base body and the other side coupled to the camera housing to lift the camera housing; a camera rotating unit having one side coupled to the drive unit body and the other side coupled to the base body to rotate the camera in a clockwise or counterclockwise direction; a base damping unit provided inside the driving unit body to reduce vibration of the rotating base body; and a battery provided on the driving unit body to supply electric energy to the elevation driving unit and the camera rotating unit, wherein the camera position maintaining unit includes: a ball post protruding upward from an upper portion of the driving unit body; a ball member provided at an upper end of the ball post and having a larger diameter than the ball post; a ball housing in which the ball member is disposed to rotate; a ball damping unit provided between the ball housing and the ball member to reduce vibration transmitted from the ball housing to the ball member; and a connection plate having one side coupled to the ball housing and the other side coupled to the aircraft.

The lift drive unit may include a lift cylinder coupled to the base body; a cylinder rod provided on the elevating cylinder and elevating in the direction of the camera unit; and a coupling plate having one side coupled to the cylinder rod and the other side coupled to the camera housing, wherein the camera rotating unit includes a driving motor coupled to the driving unit body; a drive bevel gear connected to the drive motor and rotated in a clockwise or counterclockwise direction; And one side portion is coupled to the base body and the other side portion includes a driven bevel gear that is gear-engaged and rotated with the driving bevel gear, and the one side portion of the driven bevel gear is fixedly coupled to the base body to be coupled to the driven bevel gear and the base. The body is rotated in the same direction, and the base damping unit includes a first frame having one side provided on the driving unit body; a second frame provided perpendicular to the first frame; A first spring having one side coupled to the lower surface of the second frame; a roller support body coupled to the other side of the first spring; And a roller member rotatably coupled to the roller support body and pressing an upper surface of the base body, wherein the ball damping unit is disposed between the ball housing and the ball member to cover one side of the ball member, and A first damping body through which the ball post passes; a second damping body disposed between the ball housing and the ball member to cover the other side of the ball member; a first support block coupled to a first block coupling groove provided in the first damping body; a second spring having one side coupled to the first support block; a second support block coupled to the second block coupling groove provided in the second damping body and coupled to the other side of the second spring; And it is provided on the outer walls of the first damping body and the second damping body to prevent friction between the ball housing and the first damping body, and between the ball housing and the second damping body when the first damping support and the second damping body rotate. It may include a lubricating member to reduce.

Embodiments of the present invention can minimize shaking and vibration applied to the camera and stabilize the focal position of the camera when the flight state of the aircraft and the camera shooting angle are adjusted.

1 is a diagram schematically illustrating a camera unit of a focus stabilization device of a camera for taking aerial photographs according to an embodiment of the present invention.
2 is a cross-sectional view schematically illustrating a focus stabilization device of a camera for taking aerial photographs according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 2 .
FIG. 4 is an enlarged view of an area of the ball housing shown in FIG. 2;
FIG. 5 is a view schematically showing a first damping body shown in FIG. 4, a first support block coupled thereto, and a lubricating member.
6 is an operating diagram of the present embodiment, FIG. 6 (b) is an operating diagram in which the camera unit is lowered by the operation of the lifting driving unit, and FIG. It is also working.

Hereinafter, specific details for carrying out the present invention will be described based on examples with reference to the drawings. These embodiments are described in sufficient detail to enable one skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other but are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in one embodiment in another embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Like reference numbers in the drawings indicate the same or similar function throughout the various aspects.

In order to fully understand the present invention and its operational advantages and objectives achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

1 is a diagram schematically showing a camera unit of a focus stabilization device of a camera for taking aerial photos according to an embodiment of the present invention, and FIG. 2 is a focus stabilization device for a camera for taking aerial photos according to an embodiment of the present invention. is a schematic cross-sectional view, and FIG. 3 is a cross-sectional view taken along the line A-A' of FIG.

In addition, FIG. 4 is an enlarged view of the area of the ball housing shown in FIG. 2, and FIG. 5 schematically shows the first damping body shown in FIG. 4, a first support block coupled thereto, and a lubricating member. Figure 6 is an operating diagram of this embodiment, Figure 6 (b) is an operating diagram in which the camera unit is lowered by the operation of the lifting drive unit, Figure 6 (c) is a counterclockwise operation of the camera unit by the operation of the camera rotation unit It is a working diagram that rotates in the direction.

As shown in these drawings, the focus stabilization device 1 of the camera for taking aerial photographs according to the present embodiment includes a camera unit 100 disposed at the lower part of the aircraft and photographing an object, and the camera unit 100 The lower part is coupled and the upper part is disposed on the lower part of the aircraft to elevate and rotate the camera unit 100. The camera driving unit 200, the upper part is coupled to the aircraft and the lower part is connected to the camera driving unit, A camera position maintaining unit 300 is provided to maintain a level.

The camera unit 100 may be disposed on the lower part of the aircraft and take a photograph of an object to be photographed.

In this embodiment, the camera unit 100, as shown in Figure 1, the camera housing 110 disposed in the lower part of the aircraft, coupled to the camera housing 110 and one of the four cut-out space portion 111 The first camera member 120 disposed in the incision space portion 111 of the first camera member 120 and is coupled to the camera housing 110 so as to be perpendicular (see FIG. 3), four incision space portion 111 The second camera member 130 disposed in one of the incision space portions 111 and coupled to the camera housing 110 so as to be perpendicular to the second camera member 130 (see FIG. 3) and four incision space portions ( 111), the third camera member 140 disposed in one of the incision spaces 111, and coupled to the camera housing 110 so as to be perpendicular to the third camera member 140 (see FIG. 3) and have four incision spaces. A fourth camera member 150 disposed in one of the incision spaces 111 of the parts 111 and a fifth camera member 150 coupled to the camera housing 110 so as to be perpendicular to the first camera member 120 to the fourth camera member. As shown in FIG. 2, the camera member 160 is provided in the camera housing 110 in the area where the incision space 111 is provided, and is in contact with the first camera member 120 to the fourth camera member, respectively, to form a first camera member 160. A damping sheet 170 is included to reduce vibration transmitted to the camera member 120 to the fourth camera member 150 .

In this embodiment, the first camera member 120 to the fourth camera member 150 can take pictures of a photographing target in the front, rear, left, and right directions of the camera housing 110, and the fifth camera member 160 can take pictures. It is possible to photograph an object to be photographed in a downward direction of the camera housing 110 .

In addition, in this embodiment, as shown in FIG. 2, the damping sheet 170 is coupled to the camera housing 110 so as to contact the outer wall of the first camera member 120, respectively, and the first camera from the camera housing 110 Vibration transmitted to the member 120 can be reduced. This mechanism can be equally applied to the second camera member 130 to the fourth camera member 150 .

The camera driving unit 200 raises and lowers the camera unit 100 as shown in (b) of FIG. 6 or moves the camera unit 100 counterclockwise as shown in (c) of FIG. or can be rotated clockwise.

As shown in FIG. 2 , the camera driving unit 200 in this embodiment includes a driving unit body 210 disposed between the camera unit 100 and the camera position control unit, and the inside of the driving unit body 210. A base body 220 that is rotatably coupled to the base body 220, one side is coupled to the base body 220 and the other side is coupled to the camera housing 110 to elevate the camera housing 110, elevating driving unit 230, one side A camera rotation unit 240 coupled to the drive unit body 210 and the other side coupled to the base body 220 to rotate the camera unit 100 clockwise or counterclockwise, and the inside of the drive unit body 210 A base damping unit 250 provided in the base body 220 to reduce vibration of the rotating base body 220, and a battery 260 provided in the driving unit body 210 to supply electric energy to the elevation driving unit 230 and the camera rotation unit 240. ).

As shown in FIG. 2 , a first bearing 211 may be provided in the driving unit body 210 of the camera driving unit 200 to guide rotation of the base body 220 .

As shown in (b) of FIG. 6 , the lift driver 230 of the camera drive unit 200 is connected to the camera housing 110 to move the camera housing 110 up and down.

In this embodiment, as shown in FIG. 2, the lift drive unit 230 is provided in the lift cylinder 231 coupled to the lower surface of the base body 220 and the lift cylinder 231 for the camera unit 100. It includes a cylinder rod 232 that moves up and down in the direction, and a coupling plate 233 that has one side coupled to the cylinder rod 232 and the other side coupled to the camera housing 110 .

The lifting cylinder 231 of the lifting driver 230 may be connected to the battery 260 and operated by receiving electric energy from the battery 260 .

In this embodiment, a plurality of lift cylinders 231 may be provided, and each lift cylinder 231 may be spaced apart from each other.

The coupling plate 233 of the lifting driver 230 may be detachably coupled to the cylinder rod 232 and the camera housing 110 by bolts or screws.

The camera rotation unit 240 of the camera driving unit 200 may rotate the camera unit 100 clockwise or counterclockwise.

In this embodiment, the camera rotation unit 240, as shown in Figure 2, the drive motor 241 coupled to the drive unit body 210, connected to the drive motor 241 clockwise or counterclockwise It includes a driving bevel gear 242 that rotates, one side coupled to the base body 220 and the other side a driven bevel gear 243 that rotates in gear meshing with the driving bevel gear 242.

In this embodiment, the central axis of the driven bevel gear 243 is fixedly coupled to the base body 220 so that the driven bevel gear 243 and the base body 220 can be rotated in the same direction.

The base damping unit 250 of the camera driving unit 230 may reduce vibration or shock transmitted from the driving unit body 210 to the base body 220 .

In this embodiment, the base damping unit 250, as shown in FIG. 2, the first frame 251 provided on one side of the drive unit body 210, and the first frame 251 and is provided perpendicular to A second frame 252, a first spring 253 having one side coupled to the bottom of the second frame 252, and a roller support body 254 coupled to the other side of the first spring 253, It is rotatably coupled to the roller support body 254 and includes a roller member 255 that presses the upper surface of the base body 220 .

In this embodiment, since the upper surface of the roller member 255 is pressed when the base body 220 rotates, vibration of the base body 220 can be reduced.

In addition, when vibration is transmitted to the base body 220, the vibration is transmitted to the first spring 253 through the roller member 255, and the vibration transmitted to the first spring 253 is the vibration of the first spring 253. can be offset by

As shown in FIG. 2 , the battery 260 of the camera driving unit 200 is coupled to the wall of the driving unit body 210 and can supply electric energy to the elevating cylinder 231 and the driving motor 241. there is.

In this embodiment, the battery 260 may be connected to a solar module provided on the outer side of the aircraft to receive and store electrical energy from the solar module.

The camera position maintaining unit 300 has an upper part coupled to the aircraft and a lower part connected to the camera driving unit, so that the camera unit 100 can be leveled even when the aircraft tilts.

As shown in FIG. 2 , the camera position maintaining unit 300 in this embodiment includes a ball post 310 protruding upward from the top of the driving unit body 210 and an upper end of the ball post 310. A ball member 320 which is provided and has a larger diameter than the ball post 310, a ball housing 330 in which the ball member 320 is rotated inside, and the ball housing 330 and the ball member 320 ) A ball damping unit 340 provided between the ball housing 330 and reducing vibration transmitted from the ball member 320 to the ball member 320, one side coupled to the ball housing 330 and the other side coupled to the aircraft Connection plate (350).

The ball post 310 of the camera positioning unit 300 may be bolted or welded to the upper surface of the drive unit body 210 .

In this embodiment, as shown in FIG. 3, a total of four ball posts 310 may be provided, and each ball post 310 may be spaced apart from each other.

As shown in FIGS. 2 and 4 , the ball member 320 of the camera position maintaining unit 300 may be surrounded by the ball damping part 340 and disposed inside the ball housing 330 .

In this embodiment, the ball member 320 is rotated in the direction of the center of the earth like the ball damping part 340 inside the ball housing 330 when the ball housing 330 is tilted due to the tilt of the aircraft, and the camera unit ( 100) can be leveled.

As shown in FIG. 5, the ball housing 330 of the camera position holding unit 300 is provided with a ball flange 331 at an edge, and the ball flange 331 is attached to a fastening member 332 including a bolt. It can be detachably coupled to the connection plate 350 by the.

The ball damping unit 340 of the camera position maintaining unit 300 is disposed inside the ball housing 330 to surround the ball member 320 and reduce vibration transmitted to the ball member 320, thereby reducing the camera unit 100. ) can attenuate the vibration transmitted to it.

In this embodiment, the ball damping unit 340, as shown in FIG. 4, is disposed between the ball housing 330 and the ball member 320 to cover one side of the ball member 320 and the ball post 310 ) is passed through the first damping body 341, the second damping body 342 disposed between the ball housing 330 and the ball member 320 and covering the other side of the ball member 320, and the first A first support block 343 coupled to the first block coupling groove 341b provided in the damping body 341, a second spring 344 having one side coupled to the first support block 343, and a second damping The second support block 345 coupled to the second block coupling groove 342a provided in the body 342 and coupled to the other side of the second spring 344, the first damping body 341 and the second damping body Friction between the ball housing 330 and the first damping body 341, and between the ball housing 330 and the second damping body 342 when the first damping support and the second damping body 342 are rotated on the outer wall of the 342 It includes a lubricating member 346 to reduce the.

The first damping body 341 of the ball damping unit 340 is made of an elastic material including rubber to reduce vibration or impact transmitted from the ball housing 330 .

In this embodiment, as shown in FIG. 4, the first damping body 341 may be provided with a post hole 341a through which the ball post 310 passes, and as shown in FIG. 5, the first support A first block coupling groove 341b into which the block 343 is fitted and coupled may be provided, and a body groove 341c into which the lubricating member 346 is coupled may be provided.

The second damping body 342 of the ball damping unit 340 surrounds the ball member 320 like the first damping body 341 to reduce vibration or impact transmitted from the ball housing 330.

In this embodiment, the second damping body 342 may be made of an elastic material including rubber, and may be combined with the first damping body 341 to surround the ball member 320 in a circular shape.

In this embodiment, the second damping body 342, as shown in FIG. 4, may be provided with a second block coupling groove 342a into which the second support block 345 is fit-coupled.

In this embodiment, the first damping body 341 and the second damping body 342, as shown in the enlarged view of FIG. 4, may be spaced apart from each other by a second spring 344. In this case, the rotation of the ball member 320 can be made smoothly, and the shock or vibration transmitted from the ball housing 330 to the ball member 320 is first transmitted by contraction or expansion of the second spring 344. There is an advantage that can be offset like the damping body 341 and the second damping body 342.

As shown in FIG. 5, the lubricating member 346 of the ball damping unit 340 is provided in the body groove 341c provided on the outer wall of the first damping body 341 so that the first damping body 341 rotates. can make it happen smoothly.

In this embodiment, the lubricating member 346 may be equally provided in the second damping body 342 .

In addition, in this embodiment, the lubricating member 346 may include grease.

The connecting plate 350 of the camera positioning unit 300 may be detachably coupled to the lower part of the aircraft by bolts or screws.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations fall within the scope of the claims of the present invention.

1: Focus stabilization device for aerial photography camera
100: camera unit 110: camera housing
111: incision space 120: first camera member
130: second camera member 140: third camera member
150: fourth camera member 160: fifth camera member
170: damping sheet 200: camera driving unit
210: drive unit body 211: first bearing
220: base body 230: lifting drive unit
231: lifting cylinder 232: cylinder rod
233: coupling plate 240: camera rotation unit
241: drive motor 242: drive bevel gear
243: driven bevel gear 250: base damping unit
251: first frame 252: second frame
253: first spring 254: roller support body
255: roller member 260: battery
300: camera positioning unit 310: ball post
320: ball member 330: ball housing
331: ball flange 332: fastening member
340: ball damping unit 341: first damping body
341a: post hole 341b: first block coupling groove
341c: body groove 342: second damping body
342a: second block coupling groove 343: first support block
344: second spring 345: second support block
346: lubrication member 350: connection plate

Claims (1)

A camera unit disposed at the lower part of the aircraft to photograph an object to be photographed;
a camera driving unit having a lower portion coupled to the camera unit and an upper portion disposed below the aircraft to elevate and rotate the camera unit; and
The upper part is coupled to the aircraft and the lower part is connected to the camera driving unit to include a camera position maintaining unit for maintaining the camera unit horizontally,
The camera unit,
a camera housing coupled to a lower portion of the camera driving unit and provided with four incision spaces;
a first camera member coupled to the camera housing and disposed in one of the four cutout spaces;
a second camera member coupled to the camera housing so as to be perpendicular to the first camera member and disposed in one of the four cutout spaces;
a third camera member coupled to the camera housing so as to be perpendicular to the second camera member and disposed in one of the four cutout spaces;
a fourth camera member coupled to the camera housing so as to be perpendicular to the third camera member and disposed in one of the four cutout spaces;
a fifth camera member coupled to the camera housing so as to be perpendicular to the first to fourth camera members; and
A damping sheet provided in the camera housing in the region where the incision space is provided and contacting the first camera member to the fourth camera member to reduce vibration transmitted to the first camera member to the fourth camera member. do,
The camera driving unit,
a drive unit body disposed between the camera unit and the camera position control unit;
a base body rotatably coupled to the inside of the driving unit body;
a lift drive unit having one side coupled to the base body and the other side coupled to the camera housing to lift the camera housing;
a camera rotating unit having one side coupled to the drive unit body and the other side coupled to the base body to rotate the camera in a clockwise or counterclockwise direction;
a base damping unit provided inside the driving unit body to reduce vibration of the rotating base body; and
A battery provided in the driving unit body to supply electric energy to the elevation driving unit and the camera rotating unit;
The position holding unit,
a ball post protruding upward from an upper portion of the driving unit body;
a ball member provided at an upper end of the ball post and having a larger diameter than the ball post;
a ball housing in which the ball member is rotated;
a ball damping unit provided between the ball housing and the ball member to reduce vibration transmitted from the ball housing to the ball member; and
A focus stabilization device for an aerial photographic camera comprising a connection plate having one side coupled to the ball housing and the other side coupled to the aircraft.

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