WO2022028251A1 - Composant de retenue, dispositif de caméra et système de caméra - Google Patents

Composant de retenue, dispositif de caméra et système de caméra Download PDF

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Publication number
WO2022028251A1
WO2022028251A1 PCT/CN2021/107762 CN2021107762W WO2022028251A1 WO 2022028251 A1 WO2022028251 A1 WO 2022028251A1 CN 2021107762 W CN2021107762 W CN 2021107762W WO 2022028251 A1 WO2022028251 A1 WO 2022028251A1
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WO
WIPO (PCT)
Prior art keywords
light
emitting element
camera
distance measuring
bayonet
Prior art date
Application number
PCT/CN2021/107762
Other languages
English (en)
Chinese (zh)
Inventor
饭沼大
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Publication of WO2022028251A1 publication Critical patent/WO2022028251A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to a holding member, a camera device, and a camera system.
  • Patent Document 1 describes a LIDAR mounted on a vehicle.
  • Patent Document 1 Japanese Patent Publication No. 2019-526056.
  • the holding member holds a distance measuring device provided outside the imaging device.
  • the holding member can be connected to a bayonet member in the camera device on which the lens device is mounted.
  • the retaining member may include a first portion that engages with the bayonet member.
  • the bayonet member may include a first face on which the lens device is mounted.
  • the bayonet member may include a second face parallel to the first face. The first portion can be engaged with the second side.
  • the first face may be an annular face.
  • the second surface may be an annular surface positioned closer to the outer peripheral side than the first surface.
  • the first portion may have an annular face.
  • the annular surface of the first part can be fastened to the second surface by means of a fastening element.
  • the retaining member may be integrally formed with the bayonet member.
  • the holding member may include a second portion extending in the optical axis direction of the imaging device and supporting the distance measuring device in the extended position.
  • the second part may be connected to the support part of the distance measuring device.
  • the second part can be fastened to the supporting part of the distance measuring device through the fixing part.
  • the second portion may be integrally formed with the support member of the distance measuring device.
  • the bayonet part is detachable with respect to the camera device.
  • the ranging device may include a TOF (Time Of Flight) sensor.
  • TOF Time Of Flight
  • An imaging device includes the above-described holding member.
  • the camera device may include the above-mentioned distance measuring device.
  • An imaging system may include the imaging device described above.
  • the camera system may include a support mechanism for supporting the camera device so that it can rotate about a predetermined rotation axis.
  • a holding member of a distance measuring device the holding member being connected with a bayonet member on which a lens device is mounted.
  • FIG. 1 is a perspective view showing the appearance of the imaging system 188 according to the present embodiment.
  • FIG. 2 is a side view showing the appearance of the camera module 100 .
  • FIG. 3 is a perspective view showing both the bayonet member 110 and the distance measuring device 400 included in the imaging device 180 .
  • FIG. 4 is a perspective view showing the distance measuring device 400 and the holding member 430 .
  • FIG. 5 shows a cross section of the camera 170 .
  • FIG. 6 is an external perspective view showing the holding member 430 .
  • FIG. 7 is an external perspective view showing the distance measuring device 400 .
  • FIG. 8 is an external perspective view showing the distance measuring device 400 .
  • FIG. 9 is an external perspective view showing the distance measuring device 400 .
  • FIG. 10 is a front view of the distance measuring device 400 .
  • FIG. 11 shows the AA section of FIG. 7 .
  • FIG. 12 is a side view of the camera system 188 .
  • FIG. 13 is a perspective view showing a part of the internal structure of the distance measuring device 400 .
  • FIG. 14 is a cross-sectional view of the distance measuring device 400 .
  • FIG. 15 is a perspective view of the cooling mechanism including the support member 500 and the blower 590 .
  • FIG. 16 is a perspective view of the shielding member 800 .
  • FIG. 17 is a perspective view of the shielding member 800 .
  • FIG. 18 is a perspective view of the shielding member 800 .
  • FIG. 19 schematically shows both the configuration of the electronic circuit mounted on the substrate 900 and the first part 810 .
  • FIG. 20 schematically shows a configuration of an electronic circuit mounted on a substrate 900a as a comparative example.
  • Figure 21 shows an example of an unmanned aerial vehicle (UAV).
  • UAV unmanned aerial vehicle
  • FIG. 1 is a perspective view showing the appearance of an imaging system 188 according to the present embodiment.
  • Camera system 188 includes camera 170 and gimbal 300 .
  • the camera 170 includes a camera device 180 , an interchangeable lens 190 , and a distance measuring device 400 .
  • the distance measuring device 400 is provided outside the camera device 180 .
  • Camera 170 may be a lens-interchangeable camera.
  • the interchangeable lens 190 is a lens device that is detachable from the camera device 180.
  • the camera device 180 includes the camera module 100 , the bayonet member 110 , and the holding member 430 .
  • the holding member 430 is a member that holds the distance measuring device 400 .
  • the holding member 430 is made of metal.
  • the distance measuring device 400 is installed outside the imaging device 180 and held by the holding member 430 .
  • the distance measuring device 400 is a time of flight type sensor that measures the distance to an object by light.
  • the camera module 100 includes a circuit that performs focus control by adjusting the position of the focus lens included in the interchangeable lens 190 based on the distance measured by the distance measuring device 400 .
  • the direction along the optical axis of the interchangeable lens 190 is referred to as the z-axis direction. That is, the direction in which the subject light flux is incident is referred to as the z-axis direction.
  • the direction in which the subject light beam is incident toward the camera 170 is referred to as the negative z-axis direction, and the opposite direction is referred to as the positive z-axis direction.
  • the positive z-axis direction may be referred to as front, front, or the like.
  • the negative z-axis direction may be referred to as rear, rear, or the like.
  • the camera device 180 is supported so as to be rotatable around a preset rotation axis.
  • the imaging unit 180 is supported by the gimbal 300 and is rotatable around three rotation axes.
  • the universal joint 300 can be attached to a moving object such as a UAV.
  • the gimbal 300 supports the camera 170 so that it can rotate about the pitch axis 318 .
  • the gimbal 300 supports the camera 170 so that it can rotate about the roll axis 328 .
  • the gimbal 300 supports the camera 170 so that it can rotate about the yaw axis 338 .
  • the pitch axis 318 and the yaw axis 338 are orthogonal to the z axis.
  • the pitch axis 318 and the yaw axis 338 are substantially orthogonal to the z-axis.
  • Pitch axis 318 and yaw axis 338 are examples of axes having components in directions orthogonal to the z-axis.
  • the universal joint 300 includes a rotating device 310, a rotating device 320, and a rotating device 330 as part of the support mechanism.
  • Rotation device 310 rotates camera 170 about pitch axis 318 .
  • Rotation device 320 rotates camera 170 about roll axis 328 .
  • Rotation device 330 rotates camera 170 about yaw axis 338 .
  • the universal joint 300 includes a control circuit that controls the rotary device 310 , the rotary device 320 , and the processor of the rotary device 330 , and the like.
  • the control circuit controls the posture of the camera 170 with respect to the attachment portion 302 for attaching the gimbal 300 to the moving body by controlling the rotation device 310 , the rotation device 320 , and the rotation device 330 .
  • the rotating device 320 rotates the rotating member 322 about the roll axis 328 .
  • the rotation device 310 is located on the back surface 202 side of the camera module 100 .
  • the back surface 202 is the surface on the opposite side to the side on which the interchangeable lens 190 is attached.
  • the rotating device 310 is connected to the rotating member 322 .
  • the rotating device 310 can be rotated about the rolling axis 328 by the rotating device 320 .
  • FIG. 2 is a perspective view of the camera module 100 .
  • FIG. 3 is a perspective view showing the bayonet member 110 and the distance measuring device 400 included in the imaging device 180 .
  • the housing 200 of the camera module 100 includes an image sensor and an optical filter 108 .
  • the subject light beam that has passed through the interchangeable lens 190 passes through the filter 108 and is incident on the image sensor included in the camera module 100 .
  • the image sensor included in the camera module 100 is imaged by the subject light beam passing through the filter 108 .
  • the filter 108 is detachable to the camera module 100 .
  • the bayonet member 110 is a member for attaching the interchangeable lens 190 to the imaging device 180 .
  • the bayonet component 110 is detachable to the camera module 100 .
  • the bayonet member 110 is detachable to the base portion 102 of the camera module 100 .
  • the bayonet component 110 includes a middle bayonet 120 and a bayonet module 130 .
  • the middle bayonet 120 is detachable relative to the camera module 100 .
  • the middle bayonet 120 can be fixed to the camera module 100 by screws.
  • the middle bayonet 120 can be fixed to the base portion 102 of the camera module 100 by screws.
  • the bayonet module 130 is detachable relative to the camera module 100 .
  • the bayonet module 130 is detachable relative to the middle bayonet 120 .
  • the middle bayonet 120 can hold the bayonet module 130 through a bayonet-type disassembly and assembly structure. In this way, the bayonet module 130 can be detached from the camera module 100 through the intermediate bayonet 120 .
  • the interchangeable lens 190 is detachable relative to the bayonet module 130 .
  • the bayonet module 130 can hold the interchangeable lens 190 through a bayonet-type detachable structure. In this way, the interchangeable lens 190 can be detachably attached to the camera module 100 through the intermediate member including the bayonet module 130 and the intermediate bayonet 120 .
  • the bayonet module 130 includes a first face 131 .
  • the first face 131 is an annular face.
  • the interchangeable lens 190 is mounted on the first surface 131 .
  • the bayonet module 130 has a second face 132 that is parallel to the first face 131 .
  • the components constituting the bayonet module 130 at least the components having the first surface 131 and the second surface 132 are formed of metal.
  • the second surface 132 is an annular surface positioned closer to the outer peripheral side than the first surface 131 .
  • the holding member 430 is attached to the second surface 132 .
  • the bayonet module 130 may be a bayonet corresponding to the bayonet specification of the interchangeable lens 190 .
  • the bayonet module 130 may be selected from a plurality of bayonet modules with different bayonet specifications and corresponding to the bayonet specifications of the interchangeable lens 190 .
  • the bayonet module 130 can be replaced according to the bayonet specification of the interchangeable lens 190 mounted to the camera device 180 .
  • the z-axis represents the direction along the optical axis of the interchangeable lens 190 .
  • the image sensor included in the camera module 100 is arranged so that its light-receiving surface is orthogonal to the z-axis.
  • the z-axis is the direction along the optical axis of the camera 180 .
  • FIG. 4 is a perspective view showing the distance measuring device 400 and the holding member 430 .
  • the holding member 430 is connected to the bayonet member 110 .
  • the holding member 430 includes a base portion 410 and an extension portion 420 .
  • the base portion 410 is a portion to which the bayonet member 110 is connected.
  • the extension portion 420 is a portion extending in the z-axis direction.
  • the base portion 410 is integrally formed with the extension portion 420 .
  • Connection is not limited to the meaning of connecting objects that are otherwise physically separate. The concept of connection also includes the manner in which the TOF bracket base 410 is integrated with the bayonet member 110 .
  • the base 410 is engaged with the bayonet member 110 . Specifically, the base 410 is engaged with the bayonet module 130 . The base 410 engages the second face 132 of the bayonet module 130 as described below.
  • the base 410 has an annular first face 431 and an annular second face 432 .
  • the second surface 432 is a surface closer to the negative side of the z-axis than the first surface 431 in the z-axis direction.
  • the second surface 432 is fastened to the second surface 132 of the bayonet module 130 by fixing members such as screws. Bonding includes mechanical bonding, metallurgical bonding, and chemical bonding. Mechanical bonding includes fastening with fixing components, shrink fit, and the like. Metallurgical bonding includes welding, brazing, and the like. Chemical bonding includes bonding and the like.
  • the base 410 is formed with a hole 412a, a hole 412b, a hole 412c, a hole 412d, and a hole 412e.
  • the hole 412 a , the hole 412 b , the hole 412 c , the hole 412 d , and the hole 412 e are through holes penetrating from the first surface 431 to the second surface 432 .
  • a hole 133 a , a hole 133 b , a hole 133 c , a hole 133 d and a hole 133 e are formed on the second surface 132 of the bayonet module 130 .
  • the fixing members are inserted into the holes 412a, 412b, and 412e, respectively. 412c , holes 412d and holes 412e , so that the base 410 of the holding member 430 is fastened to the second surface 432 of the bayonet module 130 .
  • the holding member 430 is positioned with respect to the bayonet member 110, which is a bayonet member to which the interchangeable lens 190 is mounted in the imaging apparatus.
  • FIG. 5 shows a cross section of the camera 170 cut along a plane parallel to the optical axis and orthogonal to the pitch axis 318 .
  • the interchangeable lens 190 is fixed to the first surface 131 of the bayonet module 130.
  • the base portion 410 of the holding member 430 is fixed to the second surface 132 of the bayonet module 130 .
  • the position of the distance measuring device 400 relative to the bayonet module 130 is determined.
  • the holding member 430 is connected to the bayonet member 110 by engaging with the bayonet member 110 .
  • the retaining member 430 may be integrally formed with any bayonet member to which the interchangeable lens 190 is mounted, for example, the retaining member 430 may be integrally formed with the bayonet module 130 .
  • the base portion 410 and the extension portion 420 are connected together by integrally forming the base portion 410 and the extension portion 420 .
  • the extension portion 420 may be fixed to the base portion 410 by fixing components such as screws, so as to be connected to the base portion 410 .
  • FIG. 6 is a perspective view showing the appearance of the holding member 430 .
  • the extension portion 420 extends in the z-axis direction.
  • the extension portion 420 extends in the positive direction of the z-axis.
  • the extension portion 420 extends from the base portion 410 in the positive z-axis direction.
  • the extending portion 420 supports the distance measuring device 400 at a position extending in the z-axis direction.
  • the extension part 420 is connected to the distance measuring device 400 .
  • the extension portion 420 guides the movement of the distance measuring device in the z-axis direction.
  • a through hole 422 formed in the z-axis direction is formed in the extension portion 420 .
  • the through hole 422 guides the distance measuring device 400 .
  • the through hole 422 is used to fix the distance measuring device 400 to the holding member 430 .
  • FIG. 7 , 8 and 9 are perspective views showing the appearance of the distance measuring device 400 .
  • FIG. 10 is a front view of the distance measuring device 400 .
  • FIG. 11 shows the AA section of FIG. 7 .
  • the distance measuring device 400 includes a support member 500 , a cover 610 , a case member 620 , and a blower 590 .
  • the support member 500 is formed of metal.
  • the support member 500 may be formed of magnesium.
  • the support member 500 and the housing member 620 form at least a part of the housing that provides the appearance of the distance measuring device 400 .
  • the blower 590 may be located within the housing member 620 . At least a part of the blower 590 may be provided integrally with the support member 500 .
  • at least a part of the blower 590 may be integrally formed with the support member 500 .
  • a member that accommodates a fan included in the blower 590 may be integrally formed with the support member 500 .
  • the support member 500 supports the distance measuring sensor provided in the distance measuring device 400 .
  • the distance measuring sensor will be described later.
  • the cover 610 includes a light-transmitting part 612 and a light-transmitting part 614 .
  • the light-transmitting member 612 transmits the detection light emitted from the distance-measuring sensor.
  • the light-transmitting member 614 transmits the returned light from the object.
  • the support member 500 includes a first side portion 510, a second side portion 520, an upper portion 530, and a bottom portion 540.
  • the support member 500 is formed of metal.
  • the support member 500 may be formed of aluminum.
  • the first side portion 510 includes a first vent 512 for circulating external air for cooling the distance measuring device 400 .
  • the second side portion 520 includes a second vent 522 for circulating external air for cooling the distance measuring device 400 .
  • the cooling structure of the distance measuring device 400 will be described later.
  • Bottom 540 includes recess 542 .
  • the extension portion 420 of the holding member 430 has an outer shape in contact with the recessed portion 542 .
  • the concave portion 542 of the support member 500 slides relative to the extension portion 420 .
  • the support member 500 is slidable relative to the extension portion 420 in the z-axis direction by sliding the recessed portion 542 and the extension portion 420 relative to each other.
  • the distance measuring device 400 is fixed to the holding member 430 by the fixing member 502 .
  • the support member 500 of the distance measuring device 400 is fixed to the extension portion 420 of the holding member 430 via the fixing member 502 .
  • the fixing member 502 is inserted into the through hole 422 of the extension portion 420 as shown in FIG. 6 .
  • the fixing member 502 includes a shaft portion 503 , a first portion 504 and a second portion 505 .
  • the first portion 504 is a portion provided at one end of the shaft portion 503 .
  • the first portion 504 has an outer diameter larger than that of the shaft portion 503 .
  • the second portion 505 is disposed on the other end of the shaft portion 503 .
  • a groove 423 for guiding the first portion 504 in the z-axis direction is formed in the extending portion 420 of the holding member 430 .
  • the groove 423 is a surface on the opposite side to the surface on the side where the extension portion 420 and the support member 500 are in contact.
  • the first portion 504 is embedded in the groove 423 formed on the extension portion 420 .
  • the shaft portion 503 passes through the through hole 570 formed in the support member 500 while being in contact with the support member 500 .
  • a part of the fixing member 502 on the side of the first portion 504 protrudes from the bottom portion 540 of the supporting member 500 .
  • the extending portion 420 of the holding member 430 presses the supporting member 500 through the first portion 504 , thereby fixing the supporting member 500 .
  • the shaft portion 503 includes a screw portion 506 .
  • the through hole 570 of the support member 500 has a screw hole 507 that engages with the screw portion 506 of the shaft portion 503 .
  • the screw portion 506 of the shaft portion 503 is engaged with the screw hole 507 .
  • the second portion 505 of the fixing member 502 receives a force that rotates the shaft portion 503 .
  • the second portion 505 can be rotated by a user of the camera 170 . If the second part 505 is rotated in the predetermined tightening direction, the screw part 506 and the screw hole 507 are engaged, so that the extension part 420 is pressed against the support member 500 through the first part 504 . Thereby, the support member 500 is fixed to the holding member 430 .
  • the first portion 504 can slide relative to the through hole 422.
  • the distance measuring device 400 slides relative to the extending portion 420 in the z-axis direction through the relative sliding of the first portion 504 and the through hole 422 to each other. Thereby, the position of the distance measuring device 400 in the z-axis direction can be located.
  • the support member 500 and the holding member 430 of the distance measuring device 400 are fixed together by the fixing member 502 .
  • at least the extension portion 420 may be integrally formed with the support member 500 to be connected to the support member 500 .
  • the holding member 430 and the supporting member 500 may be connected by integrally forming the entire holding member 430 including the base portion 410 and the extending portion 420 with the supporting member 500 .
  • FIG. 12 is a side view of the camera system 188 .
  • a line 490 drawn by a two-dot chain line indicates the movement trajectory of the outermost portion of the outer surface of the distance measuring device 400 .
  • the distance measuring device 400 can slide in the z-axis direction along the extension portion 420 as described above.
  • the straight line 491 in the line 490 is the outermost trajectory of the outer surface of the distance measuring device 400 when the distance measuring device 400 slides in the z-axis direction.
  • the position of the distance measuring device 400 relative to the bayonet member 110 in the z-axis direction can be positioned.
  • Arc 492 in line 490 is a circle of radius r centered on pitch axis 318 .
  • r is the maximum value of the distance between the pitch axis 318 and the outer surface of the ranging device 400 .
  • Circular arc 492 represents the outermost trajectory of the outer surface of ranging device 400 as camera 170 rotates about pitch axis 318 . As indicated by the arc 492 , when the camera 170 rotates around the pitch axis 318 , the ranging device 400 is not in contact with the rotating member 322 .
  • An adjustment mechanism 260 is provided on the housing 200 of the camera module 100 .
  • the adjustment mechanism 260 is a member for adjusting the position of the rotation shaft in the imaging device 180 .
  • the adjustment mechanism 260 adjusts the position of the camera module 100 relative to the pitch axis 318 in the z-axis direction.
  • the adjustment mechanism 260 may include a sliding mechanism slidably held in the z-axis direction relative to the rotation device 310 .
  • the gimbal 300 can adjust the position of the support camera 170 in the z-axis direction.
  • the position of the distance measuring device 400 in the z-axis direction can be adjusted along the extension portion 420 .
  • the position of the entire camera 170 in the z-axis direction can be adjusted.
  • the position of the camera 170 in the z-axis direction is adjusted by the adjustment mechanism 260, so that when the camera 170 rotates around the tilt axis 318, any part of the camera 170 will not contact the rotating member 322.
  • the distance measuring device 400 can also be prevented from coming into contact with the rotating member 322 .
  • the adjustment mechanism 260 to adjust the position of the camera 170 in the z-axis direction according to at least one of the weight and the length of the interchangeable lens 190 attached to the camera 170 , the center of gravity of the camera 170 can be brought closer to the tilt axis 318 .
  • the position of the distance measuring device 400 in the z-axis direction can be adjusted along the extending portion 420 according to at least one of the weight and the length of the interchangeable lens 190 mounted on the camera 170 .
  • the counterweight 172 is detachable from the back surface 202 of the camera module 100 .
  • the position of the counterweight 172 mounted on the camera module 100 is adjusted. number and location so that the center of gravity of the camera 170 is close to the pitch axis 318 .
  • FIG. 13 is a perspective view showing a part of the internal structure of the distance measuring device 400 .
  • a TOF (Time Of Flight) sensor including a substrate 900 , a power source 990 , a light emitting element 710 , a light emitting element 720 , a light emitting element 730 , a light receiving unit 700 and a shielding member 800 is housed in the distance measuring device 400 .
  • the light-receiving unit 700 , the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 operate by electric power supplied from the power supply 990 .
  • the light receiving unit 700 , the light emitting element 710 , the light emitting element 720 , the light emitting element 730 , and the power source 990 are mounted on the substrate 900 .
  • the light-emitting element 710, the light-emitting element 720, and the light-emitting element 730 are elements that emit detection light.
  • the light-emitting element 710, the light-emitting element 720, and the light-emitting element 730 constitute at least a part of the light-emitting portion.
  • the light emitting element 710 is an example of the first light emitting element.
  • the light-emitting element 720 and the light-emitting element 730 are an example of a second light-emitting element that is driven when emitting light having a smaller divergence angle than that of the light emitted by the first light-emitting element 710 .
  • a lens for reducing the divergence angle of the light is provided in the optical path of the light emitted from the light emitting element 720 and the light emitting element 730 .
  • the light emitted by the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 is emitted to the outside of the distance measuring device 400 through the light-transmitting member 614 .
  • the light receiving unit 700 receives and returns light from the light emitting unit to the object.
  • the light-receiving unit 700 includes a light-receiving element that receives light that has passed through the lens.
  • the returning light from the object is incident on the light receiving unit 700 through the light transmitting member 612 .
  • the detection light can be prevented from entering the light receiving portion 700 through the light transmitting member.
  • a circuit for calculating the distance to the object based on the light received by the light receiving unit 700 can be mounted on the substrate 900 .
  • the shielding member 800 is a member that electromagnetically shields between the light-emitting portion including the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 and the light-receiving portion 700 .
  • the shielding member 800 will be described later.
  • FIG. 14 is a cross-sectional view of the distance measuring device 400 .
  • FIG. 14 is a cross-sectional perspective view of the distance measuring device 400 when taken along the BB plane of FIG. 10 .
  • FIG. 15 is a perspective view of the cooling mechanism including the support member 500 and the blower 590 .
  • the support member 500 is thermally bonded to the light emitting element 710 , the light emitting element 720 , the light emitting element 730 , and the light receiving portion 700 .
  • the concept of thermal bonding means that at least the light-emitting element 710 , the light-emitting element 720 , the light-emitting element 730 , and the light-receiving portion 700 can conduct heat transfer. For example, heat is transferred through media such as air, metal, and other heat-transferring materials.
  • the support member 500 functions as a heat dissipation member that dissipates heat generated in the light-emitting element 710 , the light-emitting element 720 , the light-emitting element 730 , and the light-receiving portion 700 .
  • the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 are thermally bonded to the support member 500 through at least the heat transfer member 880 .
  • the light receiving portion 700 is thermally bonded to the support member 500 .
  • the support member 500 includes a plurality of first heat dissipation fins 511 and a plurality of second heat dissipation fins 521 .
  • the first side 510 of the support member 500 includes a first vent 512 .
  • the second side portion 520 opposite to the first side portion 510 of the support member 500 includes a second vent 522 .
  • the first cooling fins 511 are disposed at the first vents 512 .
  • the second heat sink 521 is disposed at the second vent 522 .
  • the support member 500 includes the first portion 551 thermally bonded to the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 to transfer heat to the plurality of second heat sinks 521 .
  • the first portion 551 is a plurality of portions thermally bonded to the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 .
  • the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 are thermally connected to the first portion 551 through at least the heat transfer member 880 .
  • the support member 500 is thermally bonded to the light receiving portion 700 , and includes the second portion 552 that transfers heat to the plurality of second heat dissipation fins 521 .
  • the first portion 551 and the second portion 552 are portions that protrude in the positive z-axis direction from the base portion 560 of the support member 500 .
  • the base portion 560 has a first surface 561 facing the substrate 900, and a second surface 562 opposite to the first surface 561.
  • the first portion 551 and the second portion 552 are disposed on the first surface 561 .
  • a plurality of first heat dissipation fins 511 and a plurality of second heat dissipation fins 521 are disposed on the second surface 562 .
  • the heat generated by each of the light emitting element 710 , the light emitting element 720 , the light emitting element 730 , and the light receiving unit 700 is released to the outside through the first heat sink 511 and the second heat sink 521 .
  • the blower 590 sucks outside air from the first vent 512 and the second vent 522, respectively, and discharges it to the outside.
  • the first fins 511 and the second fins 521 are cooled by external air sucked in from the first vents 512 and the second vents 522 , respectively.
  • the support member 500 releases the heat generated in the light-emitting element 710 , the light-emitting element 720 , the light-emitting element 730 , and the light-receiving portion 700 to the outside.
  • the support member 500 constitutes at least a part of a route for heat dissipation from the light emitting element 710 , the light emitting element 720 , the light emitting element 730 , and the light receiving unit 700 to the outside.
  • the support member 500 is formed with a through hole 570 into which the fixing member is inserted.
  • a fixing member 502 for attaching the above-described distance measuring device 400 to the imaging device 180 is inserted into the through hole 570 .
  • the support member 500 is formed with a hole 541a and a hole 541b.
  • the holes 541 a and 541 b are holes for attaching the shielding member 800 to the supporting member 500 .
  • the mounting configuration of the shielding member 800 to the supporting member 500 will be described later.
  • a lens 722 supported by the shielding member 800 is provided in the optical path of the light emitted by the light emitting element 720 . Due to the presence of the lens 722, the divergence angle of the light emitted by the light emitting element 720 becomes smaller. Likewise, a lens supported by the shielding member 800 is provided in the light path of the light emitting element 730 . In addition, no lens is provided in the optical path of the light emitted from the light-emitting element 710 .
  • FIG. 16 and 17 are perspective views of the shielding member 800 mounted on the substrate 900 .
  • FIG. 18 is a perspective view of the shielding member 800 .
  • the light receiving portion 700 in addition to the shielding member 800 , the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 are also shown.
  • the shielding member 800 may be formed of metal.
  • the shielding member 800 may be formed of aluminum.
  • the shielding member 800 includes a first portion 810 .
  • the first portion 810 is disposed between the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 and the light-receiving portion 700 .
  • the first portion 810 electromagnetically shields the light-emitting element 710, the light-emitting element 720, and the light-emitting element 730 and the light-receiving portion 700.
  • Electromagnetically shielding may include attenuating electromagnetic wave energy. So-called “electromagnetically shielding” may include reducing coupling of electromagnetic fields.
  • the first part 810 can shield the electric waves.
  • the first portion 810 may shield the electrostatic field.
  • the shield member 800 includes a base 805 .
  • the base 805 includes a first side 801 and a second side 802 .
  • the first surface 801 is the surface opposite to the substrate 900 .
  • the first surface 801 is the surface opposite to the surface 901 of the substrate 900 .
  • the surface 901 is the surface on which the light-receiving portion 700 , the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 are provided on the substrate 900 .
  • the second surface 802 is a surface opposite to the first surface 801 . When the distance measuring device 400 is mounted on the camera device 180 , the position of the second surface 802 is closer to the positive z-axis direction than the first surface 801 .
  • the first portion 810 is arranged to extend from the base portion 805 toward the substrate 900 .
  • the shielding member 800 includes a first mounting portion 830 a , a first mounting portion 830 b , and a first mounting portion 830 c for mounting the substrate 900 on the shielding member 800 .
  • the first mounting portion 830a is formed with a first hole 831a into which a fixing member for fixing the substrate 900 to the shielding member 800 is inserted.
  • the first mounting portion 830b is formed with a first hole 831b into which a fixing member for fixing the substrate 900 to the shielding member 800 is inserted.
  • the first mounting portion 830c is formed with a first hole 831c into which a fixing member for fixing the substrate 900 to the shielding member 800 is inserted.
  • the fixing member for fixing the substrate 900 to the shielding member 800 may be a screw or the like.
  • a hole 931a, a hole 931b, and a hole 931c are formed in the base portion 900. As shown in FIG.
  • the fixing member By inserting the fixing member into the first hole 831a, the first hole 831b and the first hole, respectively, in a state where the first hole 831a is aligned with the hole 931a, the first hole 831b is aligned with the hole 931b, and the first hole 831c is aligned with the hole 931c 831c, the substrate 900 is fixed to the shielding member 800.
  • the first mounting portion 830 a is provided on the first portion 810 .
  • the first mounting portion 830b and the first mounting portion 830c are provided on the base portion 805 .
  • at least the first portion 810 is provided with one or more first mounting portions 830a.
  • the first mounting portion 830a includes a protruding portion 832a that is inserted into a hole 932a provided in the substrate 900 .
  • the first portion 810 includes one or more protrusions 832a.
  • the first mounting portion 830b includes a protruding portion 832b that is inserted into a hole 932b provided in the substrate 900 .
  • the position of the substrate 900 relative to the shielding member 800 can be positioned.
  • the shielding member 800 includes a second mounting portion 840 a , a second mounting portion 840 b , and a second mounting portion 840 c for mounting the shielding member 800 to the support member 500 .
  • a hole 841a, a hole 841b, and a hole 841c are formed in the second mounting portion 840a, the second mounting portion 840b, and the second mounting portion 840c, respectively.
  • a fixing member for fixing the shielding member 800 to the supporting member 500 is inserted into the hole 841a, the hole 841b, and the hole 841c.
  • the shielding member can be inserted into the holes 841a and 841b, respectively.
  • 800 is fixed to the support member 500 .
  • the shielding member 800 is fixed to the supporting member 500 , and the distance measuring sensor including the light receiving unit 700 , the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 is fixed to the supporting member 500 .
  • the shielding member 800 includes a second portion 820 .
  • the second portion 820 is located between the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 and the light-receiving portion 700 .
  • the second portion 820 shields the light emitted by each of the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 .
  • the second portion 820 is provided on the base portion 805 .
  • the second portion 820 is disposed on the second surface 802 .
  • the second portion 820 protrudes from the second face 802 . At least a portion of the second portion 820 is disposed on the opposite side of the first portion 810 .
  • At least a portion of the second portion 820 is disposed along the first portion 810 .
  • the first portion 810 can prevent the light emitted by the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 from directly entering the light receiving portion 700 through the space in the distance measuring device 400 .
  • the shielding member 800 includes a mounting portion 852 and a mounting portion 853 for mounting the lens.
  • the mounting portion 852 and the mounting portion 853 are provided on the second surface 802 .
  • the mounting portion 852 is provided so as to surround the light emitting element 720 .
  • a lens 722 provided in the optical path of the light emitted by the light-emitting element 720 is fixed to the attachment portion 852 .
  • the mounting portion 853 is provided so as to surround the light emitting element 730 .
  • a lens provided in the optical path of the light emitted from the light-emitting element 730 is fixed to the attachment portion 853 .
  • FIG. 19 schematically shows the configuration of the electronic circuit mounted on the substrate 900 .
  • the first portion 810 is schematically shown.
  • a drive circuit 740 for driving the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 is mounted, respectively.
  • a sensor 750 including a light-receiving element included in the light-receiving unit 700, a driving circuit for the light-receiving element, and a circuit for calculating the distance to the object is mounted.
  • a first electrode 910 is provided on the substrate 900 .
  • the first electrode 910 provides the reference potential of the light-emitting element 710 , the light-emitting element 720 , the light-emitting element 730 , and the driving circuit 740 .
  • the reference potential may be the ground potential.
  • the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 are located around the driving circuit 740 .
  • the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 are disposed along two consecutive sides of the driving circuit 740 . With the circuit configuration shown in FIG. 19 , the distances between the driving circuit 740 and the light-emitting element 710 , the light-emitting element 720 , and the light-emitting element 730 can be shortened.
  • a second electrode 920 is provided on the substrate 900 .
  • the second electrode 920 provides the reference potential for the sensor 750 .
  • the reference potential may be the ground potential.
  • the first portion 810 is located between the first electrode 910 and the second electrode 920 .
  • the substrate 900 is divided into a first region 941 and a second region 942 by the first portion 810 .
  • the light emitting element 710 , the light emitting element 720 , the light emitting element 730 , the driving circuit 740 and the first electrode 910 are disposed in the first region 941 .
  • the sensor 750 including the light receiving unit 700 and the second electrode 920 are provided in the second region 942 . Thereby, electromagnetic noise (eg, noise radiation) generated on the circuits provided in the first region 941 can be suppressed from being transmitted to the circuits provided in the second region 942 .
  • electromagnetic noise eg, noise radiation
  • the electromagnetic noise generated in the circuits provided in the second area 942 can be suppressed from being transmitted to the circuits provided in the first area 941 .
  • the first electrode 910 and the second electrode 920 are provided separately. Therefore, the suppressing effect of electromagnetic noise can be improved.
  • FIG. 20 schematically shows a configuration of an electronic circuit mounted on a substrate 900a as a comparative example.
  • the symbol “a” is added to the end of the symbol of the component corresponding to the component shown in FIG. 19 . Therefore, the description of the components shown in FIG. 20 is omitted.
  • the light emitting element 710a, the light emitting element 720a, and the light emitting element 730a are arranged around the sensor 750a.
  • the first electrode 910a is disposed to surround the sensor 750a.
  • electromagnetic noise generated in the drive circuit 740a is easily transmitted to the sensor 750a.
  • the distances between the drive circuit 740a and the light-emitting element 710a, the light-emitting element 720a, and the light-emitting element 730a are increased. Therefore, as compared with the circuit configuration shown in FIG. 19, the noise applied to the sensor 750a tends to become larger. 16 to 20 , etc., according to the distance measuring device 400 of the present embodiment, the electromagnetic noise generated by the light emitting element 710 , the light emitting element 720 , and the light emitting element 730 in the driving circuit 740 can be shielded.
  • the camera 170 is an interchangeable lens type camera.
  • the above-described distance measuring device 400 and the holding member 430 holding the distance measuring device 400 are applicable to any camera other than the interchangeable lens type.
  • the above-described imaging device 180 may be mounted on a mobile body.
  • the camera 180 may be mounted on an unmanned aerial vehicle (UAV) as shown in FIG. 21 .
  • UAV 1000 may include a UAV body 1020 , a gimbal 300 , a plurality of cameras 1060 , and a camera 180 .
  • UAV 1000 is an example of a moving object propelled by a propelling unit.
  • the concept of a moving object includes, in addition to a UAV, a flying object such as an airplane moving in the air, a vehicle moving on the ground, and a ship moving on the water.
  • UAV body 1020 includes a plurality of rotors.
  • a plurality of rotors is one example of a propulsion section.
  • the UAV body 1020 makes the UAV 1000 fly by controlling the rotation of the plurality of rotors.
  • UAV body 1020 uses, for example, four rotors to fly UAV 1000.
  • the number of rotors is not limited to four.
  • the UAV1000 can also be a fixed-wing aircraft without rotors.
  • the imaging device 180 is an imaging camera for imaging a subject included in a desired imaging range.
  • the gimbal 300 rotatably supports the camera device 180 .
  • Cardan joint 300 is one example of a support mechanism.
  • the gimbal 300 rotatably supports the camera device 180 with a pitch axis using an actuator.
  • the gimbal 300 further supports the camera device 180 rotatably around the roll axis and the yaw axis, respectively, using an actuator.
  • the gimbal 300 can change the posture of the camera 180 by rotating the camera 180 around at least one of the yaw axis, the pitch axis, and the roll axis.
  • the plurality of imaging devices 1060 are sensor cameras that capture images of the surroundings of the UAV 1000 in order to control the flight of the UAV 1000 .
  • the two camera devices 1060 can be installed on the nose of the UAV1000, that is, the front.
  • the other two camera devices 1060 can be arranged on the bottom surface of the UAV 1000 .
  • the two imaging devices 1060 on the front side may be paired to function as so-called stereo cameras.
  • the two imaging devices 1060 on the bottom side may also be paired to function as stereo cameras.
  • Three-dimensional space data around the UAV 1000 can be generated from images captured by the plurality of cameras 1060 .
  • the number of cameras 1060 included in the UAV 1000 is not limited to four.
  • the UAV 1000 only needs to include at least one camera device 1060 .
  • the UAV1000 may also include at least one camera device 1060 on the nose, tail, side, bottom and top surfaces of the UAV1000, respectively.
  • the angle of view that can be set in the camera device 1060 may be larger than the angle of view that can be set in the camera device 180 .
  • the camera 1060 may also have a single focus lens or a fisheye lens.
  • the remote operation device 1600 communicates with the UAV 1000 to remotely operate the UAV 1000 .
  • the remote operation device 1600 can wirelessly communicate with the UAV 1000 .
  • the remote control device 1600 transmits to the UAV 1000 instruction information indicating various commands related to the movement of the UAV 1000, such as ascending, descending, acceleration, deceleration, forward, backward, and rotation.
  • the instruction information includes, for example, instruction information to raise the altitude of UAV 1000 .
  • the indication information may indicate the altitude at which the UAV 1000 should be located.
  • UAV 1000 moves so as to be located at the height indicated by the instruction information received from remote control device 1600 .
  • the instruction information may include an ascending instruction to ascend the UAV 1000 .
  • the UAV1000 rises while receiving the rising command. When the height of the UAV1000 has reached the upper limit, even if the ascending command is accepted, the UAV1000 can be restricted from ascending.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Accessories Of Cameras (AREA)
  • Studio Devices (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

Composant de retenue, retenant un dispositif de télémétrie disposé à l'extérieur d'un dispositif de caméra. Le composant de retenue est relié à un élément à baïonnette sur lequel est monté un dispositif de lentille.
PCT/CN2021/107762 2020-08-06 2021-07-22 Composant de retenue, dispositif de caméra et système de caméra WO2022028251A1 (fr)

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JP2020134130A JP7074298B2 (ja) 2020-08-06 2020-08-06 保持部材、撮像装置、及び撮像システム
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JP2007171505A (ja) * 2005-12-21 2007-07-05 Fujifilm Corp レンズフード及びカメラ
JP2011247988A (ja) * 2010-05-25 2011-12-08 Canon Inc 撮像装置
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