JP2021063927A - Lens apparatus, image-pickup apparatus, and moving body - Google Patents

Abstract

To solve the problem that depending on a location where a light shielding member is disposed, the light shielding member may be deformed, which may affect light shielding property of the light shielding member.SOLUTION: A lens device may include a lens, an annular light shielding member disposed closer to an image side than the lens and shielding a part of light emitted from the lens, and a holding frame holding the lens and the light shielding member. The light blocking member may have a first opening through which a part of the light emitted from the lens passes, a first annular portion surrounding the first opening, and a second annular portion surrounding the first annular portion. The holding frame may have an annular surface contacting an object side surface of the second annular portion, and at least one concave portion for receiving an adhesive adhering the lens and the holding frame on a part of the annular surface facing the object side surface of the second annular portion. The second annular portion may be thicker than the first annular portion.SELECTED DRAWING: Figure 9

Description

The present invention relates to a lens device, an imaging device, and a moving body.

Patent Document 1 discloses a light-shielding film reinforced with a cloth.
[Prior art literature]
[Patent Document]
[Patent Document 1] Japanese Unexamined Patent Publication No. 2009-3315

Depending on the location where the light-shielding member is placed, the light-shielding member may be deformed to affect the light-shielding property of the light-shielding member.

The lens device according to one aspect of the present invention may include a lens. The lens device may be provided on the image side of the lens and may include an annular light-shielding member that blocks a part of the light emitted from the lens. The lens device may include a holding frame for holding the lens and the light-shielding member. The light-shielding member may have a first opening for passing a part of the light emitted from the lens, a first annular portion surrounding the first opening, and a second annular portion surrounding the first annular portion. The holding frame receives an adhesive that adheres the lens and the holding frame to a part of the annular surface of the second annular portion that is in contact with the object-side surface and the portion of the annular surface of the second annular portion that is opposed to the object-side surface. It may have at least one recess. The second annular portion may be thicker than the first annular portion.

The holding frame may have an annular extension extending from the outer edge of the annular surface to the image side.

The outer diameter of the second annular portion may be equal to or less than the outer diameter of the annular surface.

The holding frame may further have another annular surface in the extension portion. The lens device may further include another annular light-shielding member that is disposed on the other annular surface and blocks some light emitted from the lens.

The light-shielding member may have a first sheet having a first opening and forming a first annular portion and a part of the second annular portion. The light-shielding member may have a second sheet that is stacked on the first sheet, has a second opening having a diameter larger than that of the first opening, and constitutes another part of the second annular portion.

The second sheet may be thicker than the first sheet.

The light-shielding member may further have an adhesive layer that adheres the first sheet and the second sheet.

The holding frame may have a plurality of radial recesses in a part of the annular surface of the second annular portion facing the object-side surface.

The lens device includes a first lens group having a positive refractive power, an aperture aperture, a lens, and a second lens group having a positive refractive power in order from the object side, and from an infinity object to a short-range object. A third lens group having a positive refractive power that moves along the optical axis direction at the time of focusing may be provided.

The diameter of the second lens group may be smaller than the diameter of the first lens group and the third lens group.

The lens device may be arranged outside the second lens group in the radial direction, and may further include a first drive unit that moves the third lens group along the optical axis.

The lens device may be arranged outside the second lens group in the radial direction, and may further include a second driving unit for driving the aperture diaphragm.

The first lens group may include a negative meniscus lens having a convex surface facing the object side arranged closest to the object side, and a first junction lens arranged closest to the aperture diaphragm. The second lens group may include a second junction lens arranged closest to the aperture diaphragm and a lens arranged on the image side of the second junction lens. The third lens group may have a single lens.

The holding frame may further hold the second junction lens.

The image pickup apparatus according to one aspect of the present invention may include the lens apparatus and an image sensor that captures an image formed through the lens apparatus.

The moving body according to one aspect of the present invention may be a moving body equipped with the above-mentioned imaging device.

According to one aspect of the present invention, it is possible to prevent the light-shielding member from being deformed to affect the light-shielding property of the light-shielding member.

The outline of the above invention does not list all the necessary features of the present invention. Sub-combinations of these feature groups can also be inventions.

It is a figure which shows an example of the appearance of an unmanned aerial vehicle and a remote control device. It is a figure which shows an example of the functional block of an unmanned aerial vehicle. It is a figure which shows an example of the structure of the lens system provided in the lens part. It is an external perspective view which looked at the image pickup apparatus from the front. It is an external perspective view which looked at the image pickup apparatus from the back. It is a figure which shows the cross-sectional view in the direction along the optical axis of an image pickup apparatus. It is the figure which looked at the back side of the image pickup apparatus in the state which removed the base frame from the holding frame. It is an enlarged cross-sectional view of the part where a holding frame and a lens are adhered with an adhesive. It is an enlarged cross-sectional view of the portion of the annular surface on which the light-shielding member of the holding frame is arranged. It is an enlarged cross-sectional view of the light-shielding member and the portion where the holding frame and the lens are adhered to each other via an adhesive. It is an enlarged cross-sectional view of the part where a holding frame and a lens are adhered with an adhesive.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the inventions that fall within the scope of the claims. Also, not all combinations of features described in the embodiments are essential to the means of solving the invention.

The claims, description, drawings, and abstracts include matters that are subject to copyright protection. The copyright holder will not object to any person's reproduction of these documents as long as they appear in the Patent Office files or records. However, in other cases, all copyrights are reserved.

FIG. 1 shows an example of the appearance of the unmanned aerial vehicle (UAV) 10 and the remote control device 300. The UAV 10 includes a UAV main body 20, a gimbal 50, a plurality of image pickup devices 60, and an image pickup device 100. The gimbal 50 and the imaging device 100 are examples of an imaging system. The UAV 10 is a concept including a moving body including an air vehicle moving in the air, a vehicle moving on the ground, a ship moving on the water, and the like. An airship that moves in the air is a concept that includes UAVs, other aircraft that move in the air, airships, helicopters, and the like.

The UAV main body 20 includes a plurality of rotor blades. The plurality of rotor blades are an example of a propulsion unit. The UAV main body 20 flies the UAV 10 by controlling the rotation of a plurality of rotor blades. The UAV body 20 flies the UAV 10 using, for example, four rotor blades. The number of rotor blades is not limited to four. Further, the UAV 10 may be a fixed-wing aircraft having no rotor blades.

The imaging device 100 is an imaging camera that captures a subject included in a desired imaging range. The gimbal 50 rotatably supports the imaging device 100. The gimbal 50 is an example of a support mechanism. For example, the gimbal 50 rotatably supports the image pickup device 100 on a pitch axis using an actuator. The gimbal 50 further rotatably supports the image pickup device 100 around each of the roll axis and the yaw axis by using an actuator. The gimbal 50 may change the posture of the image pickup device 100 by rotating the image pickup device 100 around at least one of the yaw axis, the pitch axis, and the roll axis.

The plurality of image pickup devices 60 are sensing cameras that image the surroundings of the UAV 10 in order to control the flight of the UAV 10. Two imaging devices 60 may be provided on the front surface, which is the nose of the UAV 10. Yet two other imaging devices 60 may be provided on the bottom surface of the UAV 10. The two image pickup devices 60 on the front side may form a pair and function as a so-called stereo camera. The two image pickup devices 60 on the bottom side may also be paired and function as a stereo camera. Three-dimensional spatial data around the UAV 10 may be generated based on the images captured by the plurality of imaging devices 60. The number of image pickup devices 60 included in the UAV 10 is not limited to four. The UAV 10 may include at least one imaging device 60. The UAV 10 may be provided with at least one imaging device 60 on each of the nose, nose, side surface, bottom surface, and ceiling surface of the UAV 10. The angle of view that can be set by the image pickup device 60 may be wider than the angle of view that can be set by the image pickup device 100. The image pickup apparatus 60 may have a single focus lens or a fisheye lens.

The remote control device 300 communicates with the UAV 10 to remotely control the UAV 10. The remote control device 300 may communicate wirelessly with the UAV 10. The remote control device 300 transmits instruction information indicating various commands related to the movement of the UAV 10, such as ascending, descending, accelerating, decelerating, advancing, reversing, and rotating, to the UAV 10. The instruction information includes, for example, instruction information for raising the altitude of the UAV 10. The instruction information may indicate the altitude at which the UAV 10 should be located. The UAV 10 moves so as to be located at an altitude indicated by the instruction information received from the remote control device 300. The instruction information may include an ascending instruction to ascend the UAV 10. The UAV10 rises while accepting the rise order. Even if the UAV10 accepts the ascending command, the ascending may be restricted if the altitude of the UAV10 has reached the upper limit altitude.

FIG. 2 shows an example of the functional block of the UAV 10. The UAV 10 includes a UAV control unit 30, a memory 37, a communication interface 36, a propulsion unit 40, a GPS receiver 41, an inertial measurement unit 42, a magnetic compass 43, a barometric altimeter 44, a temperature sensor 45, a humidity sensor 46, a gimbal 50, and an imaging device. The 60 and the image pickup device 100 are provided.

The communication interface 36 communicates with another device such as the remote control device 300. The communication interface 36 may receive instruction information including various commands from the remote control device 300 to the UAV control unit 30. The memory 37 has a UAV control unit 30, a propulsion unit 40, a GPS receiver 41, an inertial measurement unit (IMU) 42, a magnetic compass 43, a barometric altimeter 44, a temperature sensor 45, a humidity sensor 46, a gimbal 50, and an imaging device 60. The program and the like necessary for controlling the image pickup device 100 are stored. The memory 37 may be a computer-readable recording medium and may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, USB memory, and solid state drive (SSD). The memory 37 may be provided inside the UAV main body 20. It may be provided so as to be removable from the UAV main body 20.

The UAV control unit 30 controls the flight and imaging of the UAV 10 according to the program stored in the memory 37. The UAV control unit 30 may be composed of a CPU, a microprocessor such as an MPU, a microcontroller such as an MCU, or the like. The UAV control unit 30 controls the flight and imaging of the UAV 10 according to a command received from the remote control device 300 via the communication interface 36. The propulsion unit 40 promotes the UAV 10. The propulsion unit 40 has a plurality of rotary blades and a plurality of drive motors for rotating the plurality of rotary blades. The propulsion unit 40 rotates a plurality of rotor blades via a plurality of drive motors in accordance with a command from the UAV control unit 30 to fly the UAV 10.

The GPS receiver 41 receives a plurality of signals indicating the time transmitted from the plurality of GPS satellites. The GPS receiver 41 calculates the position (latitude and longitude) of the GPS receiver 41, that is, the position (latitude and longitude) of the UAV 10 based on the plurality of received signals. The IMU 42 detects the posture of the UAV 10. The IMU 42 detects the acceleration in the three axial directions of the front and rear, the left and right, and the up and down of the UAV 10 and the angular velocity in the three axial directions of pitch, roll, and yaw as the posture of the UAV 10. The magnetic compass 43 detects the nose orientation of the UAV 10. The barometric altimeter 44 detects the altitude at which the UAV 10 flies. The barometric altimeter 44 detects the barometric pressure around the UAV 10, converts the detected barometric pressure into an altitude, and detects the altitude. The temperature sensor 45 detects the ambient temperature of the UAV 10. The humidity sensor 46 detects the humidity around the UAV 10.

The image pickup apparatus 100 includes an image pickup section 102 and a lens section 200. The lens unit 200 is an example of a lens device. The image pickup unit 102 includes an image sensor 120, an image pickup control unit 110, a memory 130, and an acceleration sensor 140. The image sensor 120 may be composed of a CCD or CMOS. The image sensor 120 captures an optical image formed through the first lens group 410, the second lens group 420, and the third lens group 430, and outputs the captured image to the image pickup control unit 110. The image pickup control unit 110 may be composed of a CPU, a microprocessor such as an MPU, a microcontroller such as an MCU, or the like. The image pickup control unit 110 may control the image pickup device 100 in response to an operation command of the image pickup device 100 from the UAV control unit 30. The image pickup control unit 110 is an example of the first control unit and the second control unit. The memory 130 may be a computer-readable recording medium and may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, USB memory, and solid state drive (SSD). The memory 130 stores a program or the like necessary for the image pickup control unit 110 to control the image sensor 120 or the like. The memory 130 may be provided inside the housing of the image pickup apparatus 100. The memory 130 may be provided so as to be removable from the housing of the image pickup apparatus 100.

The acceleration sensor 140 detects acceleration in three axial directions: front-back, left-right, and up-down of the image pickup device 100. The image pickup control unit 110 acquires information indicating acceleration in the three axial directions of the front / rear, left / right, and up / down of the image pickup device 100 from the acceleration sensor 140 as posture information indicating the posture state of the image pickup device 100.

The lens unit 200 includes a first lens group 410, a second lens group 420, and a third lens group 430. The lens unit 200 further includes a lens drive unit 214, a lens control unit 220, an aperture drive unit 240, and an aperture mechanism 242. At least a part or all of the first lens group 410, the second lens group 420, and the third lens group 430 may be arranged so as to be movable along the optical axis.

The lens unit 200 may be an inner focus type fixed focus lens. The lens unit 200 may be an interchangeable lens that is detachably provided with respect to the image pickup unit 102. The lens driving unit 214 may move the third lens group 430 along the optical axis via a mechanical member such as a cam ring. The lens driving unit 214 may include an actuator. The actuator may include a stepping motor.

The lens control unit 220 may drive the lens drive unit 214 to move the third lens group 430 along the optical axis direction in accordance with a lens control command from the image pickup unit 102. The lens control command is, for example, a focus control command.

The aperture mechanism 242 adjusts the amount of light incident on the image sensor 120. The drawing mechanism 242 may include at least one wing member. The aperture drive unit 240 may include an actuator. The actuator may be an electromagnetic actuator. The electromagnetic actuator may be an electromagnet or a solenoid. The aperture drive unit 240 may receive a command from the lens control unit 220 to drive an actuator to adjust the degree of overlap of the plurality of blade members and adjust the size of the aperture opening.

The lens unit 200 further has a memory 222. The lens control unit 220 controls the movement of the third lens group 430 in the optical axis direction via the lens drive unit 214 in response to a lens operation command from the image pickup unit 102.

The memory 222 stores the control value of the third lens group 430 that moves via the lens driving unit 214. The memory 222 may include at least one of flash memories such as SRAM, DRAM, EPROM, EEPROM, and USB memory.

In this embodiment, an example in which only the third lens group 430 moves along the optical axis direction will be described. However, at least one of the first lens group 410 and the second lens group 420 may move along the optical axis direction.

FIG. 3 shows an example of the configuration of the lens system included in the lens unit 200. The lens system included in the lens unit 200 is, in order from the object side, the first lens group 410 having a positive refractive power, the aperture mechanism 242, the second lens group 420 having a positive refractive power, and the near infinity object. It includes a third lens group 430 having a positive refractive power that moves along the optical axis direction when focusing on a distant object. The first lens group 410 includes a negative meniscus lens L11 arranged on the object side with a convex surface facing the object side, and a first junction lens CL1 arranged closest to the aperture mechanism 242. The second lens group 420 has a second junction lens CL2 arranged closest to the aperture mechanism 242. The third lens group 430 has a single lens L31.

The first lens group 410 is composed of a negative meniscus lens L11 having a convex surface facing the object side, a lens L12, and a first junction lens CL1 arranged closest to the diaphragm mechanism 242 in order from the object side. The second lens group 420 is composed of a second junction lens CL2 and a lens L21 arranged closest to the diaphragm mechanism 242 in order from the object side. The lens L21 is a meniscus lens with a convex surface facing the image side. The lens L21 is an example of a "lens" included in the lens device. The image side is the image plane side of the image sensor 120 along the optical axis, which is the reference axis of the image pickup apparatus 100, and the light of the subject on the side opposite to the image sensor 120 side along the optical axis is emitted from the object side. This is the side that is incident on the optical system.

The third lens group 430 is composed of a single lens of the lens L31. The first junction lens CL1 is composed of a positive lens CL1p and a negative lens CL1n in order from the object side. The positive lens CL1p and the negative lens CL1n are joined. The second junction lens CL2 is composed of a negative lens CL2n and a positive lens CL2p in order from the object side. The negative lens CL2n and the positive lens CL2p are joined.

In the lens system configured as described above, the diameter of the second lens group 420 is smaller than the diameter of the first lens group 410 and the third lens group 430. A lens drive unit 214 for driving the third lens group 430 and an aperture drive unit 240 for driving the aperture mechanism 242 are arranged in a space outside the second lens group 420 in the radial direction. As a result, the lens unit 200 can be miniaturized by effectively using the space.

FIG. 4 is an external perspective view of the image pickup apparatus 100 as viewed from the front. FIG. 5 is an external perspective view of the image pickup apparatus 100 as viewed from the back.

The image pickup apparatus 100 includes an outer cylinder 500 for accommodating the lens system, a holding frame 502 for holding the outer cylinder 500, a support frame 503 for supporting the lens system via the holding frame 502, and a base frame for holding the support frame 503. It includes 510 and a substrate 150 provided on the back surface of the base frame 510.

FIG. 6 shows a cross-sectional view of the image pickup apparatus 100 in the direction along the optical axis. The outer cylinder 500 accommodates the first lens group 410, the second lens group 420, and the third lens group 430. The holding frame 501 holds the first lens group 410. The holding frame 501 is fixed to the outer cylinder 500. The holding frame 502 holds the second lens group 420. The drawing mechanism 242 is fixed to the holding frame 502. The holding frame 504 holds the third lens group 430. The holding frame 504 is supported by the holding frame 502 so as to be movable in the optical axis direction via the lens driving unit 214. The holding frame 502 is fixed to the support frame 503 via screws 515. The support frame 503 supports the first lens group 410, the second lens group 420, and the third lens group 430 via the outer cylinder 500, the holding frame 501, the holding frame 502, and the holding frame 504. The support frame 503 and the base frame 510 are merely examples. Other structures may be used as long as they are a support frame that directly or indirectly supports at least one lens and a base frame that holds the support frame so that the inclination of the support frame can be adjusted.

The aperture drive unit 240 and the lens drive unit 214 are arranged outside the holding frame 502 in the radial direction. The substrate 150 holds the image sensor 120. The aperture drive unit 240 and the lens drive unit 214 are arranged outside the outer periphery of the holding portion of the second lens group 420 of the holding frame 502. That is, the holding frame 502 is provided between the aperture drive unit 240, the lens drive unit 214, and the second lens group 420. The base substrate 150 is fixed to the base frame 510.

On the image side of the lens L21 constituting the second lens group 420, an annular light-shielding member 550 that blocks a part of the light emitted from the lens L21 is arranged. The holding frame 502 holds the light-shielding member 550. The holding frame 502 has an annular surface 512 on the inner wall on which the light-shielding member 550 is arranged. The annular surface 512 may be a step formed on the inner wall surface of the holding frame 502.

FIG. 7 is a view seen from the back side of the image pickup apparatus 100 in a state where the base frame 510 is removed from the holding frame 502. The light-shielding member 550 has an opening 5501 that allows a part of the light emitted from the lens L21 to pass through, a first annular portion 5502 that surrounds the opening 5501, and a second annular portion 5503 that surrounds the first annular portion 5502. At least a portion of the second annular portion 5503 is arranged on the annular surface 512 of the holding frame 502. The opening 5501 is an example of the first opening.

The holding frame 502 further has at least one recess 514 that receives an adhesive that adheres the lens L21 and the holding frame 502 to a part of the annular surface 512 that faces the object-side surface of the second annular portion 5503. The three recesses 514 may be radially formed on the annular surface 512. The recess 514 is filled with an adhesive. The lens L21 is adhered to the holding frame 502 by the adhesive filled in the recess 514.

Since the recess 514 is present on the annular surface 512 on which the second annular portion 5503 is arranged, the surface of the second annular portion 5503 corresponding to the recess 514 is not supported by the holding frame 502. A diaphragm drive unit 240 and a lens drive unit 214 are arranged on the outer peripheral side of the holding frame 502. That is, the aperture drive unit 240 and the lens drive unit 214 are arranged around the light-shielding member 550. The aperture drive unit 240 and the lens drive unit 214 include an actuator, and static electricity or vibration may be generated. Such static electricity or vibration may cause the portion of the light-shielding member 550 that is not supported by the holding frame 502 to bend. The bending of the light-shielding member 550 may affect the light-shielding property of the light-shielding member 550 and affect the optical performance of the lens unit 200.

FIG. 8 is an enlarged cross-sectional view of a portion where the holding frame 502 and the lens L21 are adhered to each other via the adhesive 560. The light-shielding member 700 is composed of one annular light-shielding sheet 701 and an adhesive layer 702 for adhering to the annular surface 512 of the holding frame 502. According to such a light-shielding member 700, the portion 710 corresponding to the recess 514 of the light-shielding member 700 is not supported by the holding frame 502. Therefore, the light-shielding member 700 may bend due to static electricity or vibration of the actuator.

Therefore, in the present embodiment, the second annular portion 5503, which is at least partially arranged on the annular surface 512, is made thicker than the first annular portion 5502. By thickening the second annular portion 5503, it is possible to prevent the portion of the second annular portion 5503 corresponding to the recess 514 from bending. Further, by keeping the first annular portion 5502 thin, it is possible to prevent a part of the light emitted from the lens L21 from being reflected at the edge portion of the first annular portion 5502 on the optical axis side.

FIG. 9 is an enlarged cross-sectional view of a portion of the annular surface 512 on which the light-shielding member 550 of the holding frame 502 according to the present embodiment is arranged. FIG. 10 is an enlarged cross-sectional view of the light-shielding member 550 according to the present embodiment and the portion where the holding frame 502 and the lens L21 are adhered to each other via the adhesive 560.

The light-shielding member 550 has a first sheet 552 and a second sheet 554. The first sheet 552 has an opening of 5501 and constitutes a first annular portion 5502 and a part of the second annular portion 5503. The second sheet 554 is stacked on the first sheet 552 and has an opening 5504 having a diameter larger than the opening 5501, and constitutes another part of the second annular portion 5503. The opening 5504 is an example of the second opening.

The second sheet 554 may be thicker than the first sheet 552. The first sheet 552 and the second sheet 554 may each be composed of polyethylene terephthalate (PET). The light-shielding member 550 further has an annular adhesive layer 551 for adhering the first sheet 552 to the annular surface 512 of the holding frame 502. Further, the light-shielding member 550 further has an annular adhesive layer 553 for adhering the first sheet 552 and the second sheet 554.

The second sheet 554 functions as a reinforcing plate of the first sheet 552 that prevents the first sheet 552 from bending. The light-shielding member 550 is reinforced by providing the second sheet 554 in addition to the first sheet 552. As shown in FIG. 10, the second annular portion 5503 in which the first sheet 552 and the second sheet 554 of the light-shielding member 550 are present is thicker than the first annular portion 5502 in which only the first sheet 552 is present. The thickness of the second annular portion 5503 in the optical axis direction is thicker than the thickness of the first annular portion 5502 in the optical axis direction. As a result, the presence of the recess 514 on the annular surface 512 causes the light-shielding member 550 to be generated by the lens drive unit 214 or the aperture drive unit 240 even if a part of the light-shielding member 550 is not supported by the annular surface 512. It is possible to prevent bending due to static electricity or vibration. Therefore, according to the present embodiment, the light-shielding property of the light-shielding member 550 can be improved.

The holding frame 502 has an annular extension portion 5021 extending from the outer edge 5121 of the annular surface 512 to the image side. As shown in FIG. 6, the extension portion 5021 has an annular surface 5022 for arranging another annular light-shielding member 570 that blocks a part of the light emitted from the lens L21. The annular surface 5022 may be provided on the inner wall of the holding frame 502 on the image side of the annular surface 512.

The outer diameter 5510 of the second annular portion 5503 may be equal to or less than the outer diameter of the annular surface 512, which is the outer edge 5121 of the annular surface 512.

FIG. 11 is an enlarged cross-sectional view of a portion where the holding frame 502 and the lens L21 are adhered to each other via the adhesive 560. The inner diameter of the second sheet 554 may be larger than the inner diameter of the first sheet 552. That is, the distance b from the maximum effective ray 610 to the inner diameter of the second sheet 554 may be larger than the distance a from the maximum effective ray 610 to the inner diameter of the first sheet 552 of the optical system. As a result, the second sheet 554 does not interfere with the cut range of the maximum effective ray 610. By adding the second sheet 554, it is possible to prevent the light-shielding member 550 from being affected by the light-shielding property.

In order to allow the light-shielding member 550 to be stably arranged, it is conceivable to increase the width of the annular surface 512 in the radial direction. In order to increase the width of the annular surface 512, it is necessary to reduce the wall thickness of the extension portion 5021. However, in order to secure the strength of the extension portion 5021, it is necessary to secure a certain wall thickness of the extension portion 5021 as well. Therefore, there is a limit to increasing the width of the annular surface 512. Even when there are such structural restrictions, according to the present embodiment, the light-shielding member 550 can be reinforced by making the second annular portion 5503 thicker than the first annular portion 5502 by the second sheet 554. Therefore, it is possible to prevent the portion of the second annular portion 5503 corresponding to the recess 514 from bending.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. It is clear from the description of the claims that such modified or improved forms may also be included in the technical scope of the present invention.

The order of execution of operations, procedures, steps, steps, etc. in the devices, systems, programs, and methods shown in the claims, specification, and drawings is particularly "before" and "prior to". It should be noted that it can be realized in any order unless the output of the previous process is used in the subsequent process. Even if the scope of claims, the specification, and the operation flow in the drawings are explained using "first", "next", etc. for convenience, it means that it is essential to carry out in this order. It's not a thing.

10 UAV
20 UAV main unit 30 UAV control unit 36 Communication interface 37 Memory 40 Propulsion unit 41 GPS receiver 42 Inertial measurement unit 43 Magnetic compass 44 Atmospheric pressure meter 45 Temperature sensor 46 Humidity sensor 50 Gimbal 60 Imaging device 100 Imaging device 102 Imaging unit 110 Imaging control unit 120 Image sensor 130 Memory 140 Acceleration sensor 150 Board 200 Lens unit 214 Lens drive unit 220 Lens control unit 222 Memory 240 Aperture drive unit 242 Aperture mechanism 300 Remote control device 410 1st lens group 420 2nd lens group 430 3rd lens group 500 Outer cylinder 501 Holding frame 502 Holding frame 503 Support frame 504 Holding frame 510 Base frame 512 Circular surface 514 Recess 515 Screw 550 Light-shielding member 551,553 Adhesive layer 552 First sheet 554 Second sheet 560 Adhesive 570 Light-shielding member 610 Maximum effective light beam 700 Light-shielding member 701 Light-shielding sheet 702 Adhesive layer 5021 Extension part 5022 Circular surface 5121 Outer edge 5501, 5504 Opening 5502 First annular part 5503 Second annular part

Claims (16)

With the lens
An annular light-shielding member arranged on the image side of the lens and blocking a part of the light emitted from the lens.
A holding frame for holding the lens and the light-shielding member is provided.
The light-shielding member has a first opening for passing a part of light emitted from the lens, a first annular portion surrounding the first opening, and a second annular portion surrounding the first annular portion. ,
The holding frame is
An annular surface in contact with the object-side surface of the second annular portion,
A part of the annular surface facing the object-side surface of the second annular portion has at least one recess for receiving an adhesive for adhering the lens and the holding frame.
The second annular portion is a lens device that is thicker than the first annular portion. The lens device according to claim 1, wherein the holding frame has an annular extension portion extending from the outer edge of the annular surface toward the image side. The lens device according to claim 2, wherein the outer diameter of the second annular portion is equal to or less than the outer diameter of the annular surface. The holding frame further has another annular surface on the extension portion.
The lens device according to claim 2, wherein the lens device is arranged on the other annular surface and further includes another annular light-shielding member that blocks a part of the light emitted from the lens. The light-shielding member
A first sheet having the first opening and forming the first annular portion and a part of the second annular portion.
The lens according to claim 1, wherein the lens is stacked on the first sheet, has a second opening having a diameter larger than that of the first opening, and has a second sheet constituting another part of the second annular portion. apparatus. The lens device according to claim 5, wherein the second sheet is thicker than the first sheet. The light-shielding member
The lens apparatus according to claim 5, further comprising an adhesive layer for adhering the first sheet and the second sheet. The lens device according to claim 1, wherein the holding frame has a plurality of the concave portions radially on a part of the annular surface facing the object-side surface of the second annular portion. From the object side,
The first lens group with positive refractive power and
Aperture aperture and
A second lens group including the lens and having a positive refractive power,
The lens apparatus according to claim 1, further comprising a third lens group having a positive refractive power that moves along the optical axis direction when focusing from an infinity object to a short-distance object. The lens device according to claim 9, wherein the diameter of the second lens group is smaller than the diameters of the first lens group and the third lens group. The lens device according to claim 10, further comprising a first driving unit that is arranged outside the second lens group in the radial direction and moves the third lens group along the optical axis. The lens device according to claim 11, further comprising a second driving unit that is arranged outside the second lens group in the radial direction and drives the aperture diaphragm. The first lens group is
A negative meniscus lens with a convex surface facing the object side, which is placed closest to the object side,
It has a first junction lens placed closest to the aperture diaphragm and
The second lens group includes a second junction lens arranged closest to the aperture diaphragm and the lens arranged on the image side of the second junction lens.
The lens device according to claim 9, wherein the third lens group has a single lens. The lens device according to claim 13, wherein the holding frame further holds the second junction lens. The lens device according to any one of claims 1 to 14.
An imaging device including an image sensor that captures an image formed through the lens device. A moving body that moves with the imaging device according to claim 15.

Images