CN-122002114-A - Image pickup apparatus and control method of image pickup apparatus

CN122002114ACN 122002114 ACN122002114 ACN 122002114ACN-122002114-A

Abstract

The application provides an image pickup device and a control method of the image pickup device, wherein the image pickup device comprises a lens assembly, a signal transmission assembly and a holder provided with a control module, the holder is further provided with a plurality of rotating joints, each rotating joint comprises a first rotating part and a second rotating part connected with the first rotating part in a rotating mode, the transmission assembly comprises a plurality of sections of wires connected between the lens assembly and the control module and a plurality of wireless optical communication modules connected between adjacent wires, each wireless optical communication module comprises a first photoelectric module installed on the first rotating part and a second photoelectric module installed on the second rotating part, the first photoelectric module and the second photoelectric module are coaxially arranged, the first photoelectric module is used for converting an electric signal into an optical signal and outputting the optical signal to the corresponding second photoelectric module, and the second photoelectric module is used for converting the received optical signal into the electric signal. By implementing the scheme of the application, the signal transmission rate and the signal transmission quality between the control module and the lens assembly can be effectively improved.

Inventors

YANG YONG
ZHANG HAIWEI
HUANG JUNBIN
FU QUANFEI
ZHANG KUAN

Assignees

深圳市埃尔法光电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20251226

Claims (10)

1. The camera shooting device comprises a lens assembly, a signal transmission assembly and a holder provided with a control module, wherein a signal transmission channel is arranged between the lens assembly and the control module, the signal transmission assembly is installed on the signal transmission channel, the holder is further provided with a plurality of rotary joints, each rotary joint comprises a first rotary part and a second rotary part rotatably connected with the first rotary part, the signal transmission channel comprises a first assembly opening arranged on the first rotary part and a second assembly opening arranged on the second rotary part, the first assembly opening and the second assembly opening are coaxially arranged, the transmission assembly comprises a plurality of sections of wires connected between the lens assembly and the control module and wireless optical communication modules connected between adjacent wires, the number of the wireless optical communication modules is equal to that of the rotary joints, each wireless optical communication module comprises a first photoelectric module installed on the first assembly opening and a second photoelectric module installed on the second assembly opening, the first photoelectric module is used for converting an electric signal into an optical signal and outputting the photoelectric signal to the second photoelectric module correspondingly receives the photoelectric signal, and the photoelectric signal is converted into the optical signal.
2. The image capturing apparatus according to claim 1, wherein a laser direction of the first photoelectric module satisfies the following relation: Z·sinθ≤80nm Z represents the distance between the first photoelectric module and the second photoelectric module, and theta represents the included angle between the laser direction and the corresponding rotating shaft of the rotating joint.
3. The imaging apparatus according to claim 2, wherein Z has a value range of 2mm to 50mm.
4. The image capturing apparatus according to claim 1, wherein the laser direction of the first optoelectronic module further satisfies the following relation: δx≤a/2 δy≤a/2 Wherein a represents the side length dimension of an equivalent square corresponding to the photosensitive area of the second photoelectric module, δx represents the first deviation displacement of the laser direction along the first direction, δy represents the second deviation displacement of the laser direction along the second direction, and the first direction, the second direction and the corresponding rotation axes of the rotary joints are perpendicular to each other.
5. The image pickup apparatus according to claim 1, wherein the lead includes an image signal line for transmitting image data collected by the lens assembly, the first optoelectronic module includes a first driving module and a first laser connected to the first driving module, and the first driving module is configured to generate a first driving signal of the first laser based on an image signal of the corresponding image signal line to drive the first laser to emit a first optical signal to the second optoelectronic module.
6. The image capturing apparatus according to claim 5, wherein the second photoelectric module includes a first photodetector and a first transimpedance amplifier connected to the first photodetector, the first photodetector is configured to acquire the first optical signal and convert the first optical signal into an initial image signal, and the first transimpedance amplifier is configured to acquire the initial image signal and amplify the initial image signal for outputting to the corresponding image signal line.
7. The imaging apparatus according to claim 6, wherein the second photoelectric module further comprises a focusing lens disposed between the first laser and the first photodetector, and the focusing lens has a size of 3mm to 6mm.
8. The image pickup apparatus according to claim 6, wherein the lead further comprises a control signal line for transmitting control information of the control module, the second photoelectric module comprises a second driving module and a second laser connected to the second driving module, the second driving module is configured to generate a second driving signal of the second laser based on a control signal of the corresponding control signal line so as to drive the second laser to emit a second optical signal to the second photoelectric module, the second photoelectric module further comprises a second optical detector and a second transimpedance amplifier connected to the second optical detector, the second optical detector is configured to acquire the second optical signal and convert the second optical signal into an initial control signal, and the second transimpedance amplifier is configured to acquire the initial control signal and amplify the initial control signal so as to output the initial control signal to the corresponding control signal line.
9. The imaging apparatus according to claim 1, wherein the pan-tilt comprises a body, a first transmission mechanism and a second transmission mechanism, the control assembly is disposed in the body, the body and the first transmission mechanism are connected through a first rotation joint, the first transmission mechanism and the second transmission mechanism are connected through a second rotation joint, the second transmission mechanism and the lens assembly are connected through a third rotation joint, and a rotation axis of the first rotation joint and a rotation axis of the third rotation joint are perpendicular to a rotation axis of the second rotation joint.
10. A control method of an image pickup apparatus, applied to the image pickup apparatus according to any one of claims 1 to 9, characterized by comprising: After the first photoelectric module of the camera device transmits an optical signal to the second photoelectric module, acquiring an electric signal obtained by the second photoelectric module based on the optical signal conversion; If the quality of the electric signal does not meet the requirement of continuing to transmit to the next node, determining a regulation object and control parameters of the regulation object based on the amplitude allowance and the time sequence allowance of the electric signal, wherein the regulation object is the first photoelectric module and/or the second photoelectric module, the control parameters corresponding to the first photoelectric module comprise driving current, and the control parameters corresponding to the second photoelectric module comprise at least one of balance parameters and gain parameters; And controlling the regulation object to work based on the control parameter.

Description

Image pickup apparatus and control method of image pickup apparatus Technical Field The invention belongs to the technical field of photoelectric transmission, and particularly relates to an imaging device and a control method of the imaging device. Background In a dynamic imaging device, electrical connection between a movable member (lens and image sensor module) and a fixed body (main control module) is critical. In the related art, signal transmission is generally realized by relying on cable bundles between the movable component and the control module, and the physical cables must pass through a tripod head joint for realizing rotation or pitching motion. The traditional cable transmission mode is easy to expose the following defects in the long-term dynamic use process, namely firstly, along with the development of an image sensor to ultra-high resolution and high frame rate, mass data has extremely high requirements on a transmission link, a copper wire penetrating through a narrow rotary joint is easy to be restricted by signal attenuation and electromagnetic interference and is difficult to stably support an uncompressed high-quality original video stream, and secondly, the rotary joint continuously moves to repeatedly bend and twist the cable, so that internal metal fatigue fracture, insulation layer abrasion and poor contact of a connector are easy to be caused, signal interruption or equipment failure is caused, the maintenance cost is higher, and the service life of the product is limited. Disclosure of Invention The present invention is directed to an imaging device and a control method for the imaging device, and aims to solve the above-mentioned problems in the related art. The first aspect provides an image pickup device, which comprises a lens assembly, a signal transmission assembly and a holder provided with a control module, wherein a signal transmission channel is arranged between the lens assembly and the control module, the signal transmission assembly is installed on the signal transmission channel, the holder is further provided with a plurality of rotary joints, each rotary joint comprises a first rotary part and a second rotary part rotatably connected with the first rotary part, the signal transmission channel comprises a first assembly opening arranged on the first rotary part and a second assembly opening arranged on the second rotary part, the first assembly opening and the second assembly opening are coaxially arranged, the transmission assembly comprises a plurality of sections of wires connected between the lens assembly and the control module and wireless optical communication modules connected between adjacent wires, the number of the wireless optical communication modules is equal to that of the rotary joints, each wireless optical communication module comprises a first photoelectric module installed on the first assembly opening and a second module installed on the second assembly opening, the first photoelectric module is used for converting an electric signal into an optical signal and outputting the photoelectric signal to the second photoelectric module correspondingly receives the electric signal, and the photoelectric signal is converted into the optical signal. Optionally, the laser direction of the first photoelectric module meets the following relation: Z·sinθ≤80nm Z represents the distance between the first photoelectric module and the second photoelectric module, and theta represents the included angle between the laser direction and the corresponding rotating shaft of the rotating joint. Optionally, the value range of Z is 2 mm-50 mm. Optionally, the laser direction of the first photoelectric module further satisfies the following relation: δx≤a/2 δy≤a/2 Wherein a represents the side length dimension of an equivalent square corresponding to the photosensitive area of the second photoelectric module, δx represents the first deviation displacement of the laser direction along the first direction, δy represents the second deviation displacement of the laser direction along the second direction, and the first direction, the second direction and the corresponding rotation axes of the rotary joints are perpendicular to each other. Optionally, the lead includes an image signal line for transmitting image data collected by the lens assembly, the first photoelectric module includes a first driving module and a first laser connected to the first driving module, and the first driving module is configured to generate a first driving signal of the first laser based on an image signal of the corresponding image signal line, so as to drive the first laser to emit a first optical signal to the second photoelectric module. Optionally, the second photoelectric module comprises a first optical detector and a first transimpedance amplifier connected to the first optical detector, wherein the first optical detector is used for acquiring the first optical signal and converting t