CN110336938B - Photosensitive element, image acquisition device, lens driving method, and storage medium - Google Patents
Photosensitive element, image acquisition device, lens driving method, and storage medium Download PDFInfo
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- CN110336938B CN110336938B CN201910741669.9A CN201910741669A CN110336938B CN 110336938 B CN110336938 B CN 110336938B CN 201910741669 A CN201910741669 A CN 201910741669A CN 110336938 B CN110336938 B CN 110336938B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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Abstract
The invention provides a photosensitive assembly, an image acquisition device, a lens driving method and a storage medium, wherein the photosensitive assembly is arranged in the image acquisition device and comprises the following components: the photosensitive plate is used for fixing the photosensitive resistor; the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens; the driving device is in driving connection with the lens to drive the lens to move in the direction close to or far away from the photosensitive plate, so that the overlapping area of a first acquisition field angle of the photosensitive resistor on an imaging area through the lens and a second acquisition field angle of the imaging area through the image acquisition device is larger than a threshold value.
Description
Technical Field
The invention relates to the field of communication, in particular to a photosensitive assembly, an image acquisition device, a lens driving method and a storage medium.
Background
The automatic switching of day and night modes of the image acquisition device mainly comprises the following two implementation modes: the most common hard light sensing mode and the soft light sensing mode that has recently appeared, wherein the hard light sensing is implemented by: sensing visible light in an environment through a photoresistor in an image acquisition device (e.g., a camera) and outputting a value of the visible light; switching to a night mode when the current value is lower than a certain threshold value; otherwise, switching to the daily mode.
However, the hard photosensitive implementation has the following disadvantages: the scene concerned by the camera is darker, for example, the camera is installed in a lighted room, and the outdoor monitored by the camera is at night, at the moment, the ambient illumination of the photoresistor is not equal to the illumination of the monitored scene, and the day and night mode is abnormal.
For the implementation of soft light-sensing, the related art (for example, CN106534700A) provides a method for implementing soft light-sensing based on automatic exposure and automatic white balance algorithms, and the specific scheme is as follows: the method comprises the steps of judging the intensity of infrared light in an external environment in real time by analyzing the image brightness in combination with white balance, and realizing a soft photosensitive technology by combining an IRCUT pre-cutting mechanism, wherein the soft photosensitive technology has the following defects: the setting of the brightness threshold is greatly influenced by scenes, even some algorithms need to adopt a real-time updated threshold, and in addition, due to the rotation of a ball machine in a camera, the change of the scenes, and the real-time updated threshold service cannot avoid the problem.
Aiming at the problems that the day and night mode switching is abnormal and the like caused by the photosensitive error of the photoresistor in the related technology, an effective technical scheme is not provided yet.
Disclosure of Invention
The embodiment of the invention provides a photosensitive assembly, an image acquisition device, a lens driving method and a storage medium, which are used for at least solving the problems of abnormal day and night mode switching caused by photosensitive errors of a photosensitive resistor in the related technology and the like.
According to an embodiment of the present invention, there is provided a photosensitive assembly provided inside an image pickup apparatus, including: the photosensitive plate is used for fixing the photosensitive resistor; the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens; the driving device is in driving connection with the lens to drive the lens to move in a direction close to or far away from the photosensitive plate, so that an overlapping area of a first collection field angle of the photosensitive resistor on an imaging area through the lens and a second collection field angle of the image collection device on the imaging area is larger than a threshold value.
In an embodiment of the present invention, the driving device includes: the output shaft of the driving motor is connected with the transmission component, so that the driving device drives the lens to move in the direction close to or far away from the photosensitive plate through the transmission component, and the overlapping area of the first acquisition angle of view and the second acquisition angle of view is larger than a threshold value.
In an embodiment of the present invention, the transmission member includes: the driving motor is arranged on the lens, and the driving screw and the screw nut are matched with each other.
According to another embodiment of the present invention, there is also provided an image acquisition apparatus including the photosensitive component described in any one of the above.
In an embodiment of the present invention, the driving device includes: a drive motor and a transmission member, the transmission member comprising: drive screw and screw nut that mutually support, image acquisition device still includes: the fixing piece is used for fixing the photosensitive plate and the driving device on two sides respectively, wherein the fixing piece is provided with an opening so that a transmission screw rod of the driving motor stretches out to be connected with the screw rod nut in a matched mode.
In an embodiment of the present invention, the lens corresponds to at least a portion of a front face of the image capturing device, and the front face has an opening, so that the lens captures light through the opening on the front face.
According to another embodiment of the present invention, there is also provided a lens driving method using the photosensitive element described in any one of the above, including: controlling the driving device to rotate; the lens is driven to move in a direction close to or far away from the photosensitive plate through rotation of the driving device, so that the overlapping area of the first collection visual angle and the second collection visual angle of the photosensitive resistor is larger than a threshold value.
In an embodiment of the present invention, before controlling the driving device to rotate, the method further includes: and setting a linear relation between the first lens multiple of the lens and the second lens multiple of the image acquisition device.
In the embodiment of the present invention, it is realized that the overlapping area of the first collection angle of view and the second collection angle of view is greater than a threshold value by: adjusting the second lens multiple to a third lens multiple; and according to the linear relation, obtaining a fourth lens multiple corresponding to the third lens multiple as the current lens multiple of the lens, so that the overlapping area of the first collection angle of view and the second collection angle of view of the photoresistor is larger than a threshold value.
According to another embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is configured to execute any one of the above lens driving methods when executed.
According to the invention, a photosensitive assembly is arranged in the image acquisition device, wherein the photosensitive assembly comprises: the photosensitive plate is used for fixing the photosensitive resistor; the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens; the driving device is in driving connection with the lens to drive the lens to move along the direction close to or far away from the photosensitive plate, so that the overlapping area of a first acquisition field angle of the photosensitive resistor to an imaging area through the lens and a second acquisition field angle of the imaging area through the image acquisition device is larger than a threshold value.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of an alternative photosensitive element according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another alternative photosensitive element according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an alternative image capturing device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another alternative image capturing device according to an embodiment of the present invention
FIG. 5 is a flowchart of an alternative lens driving method according to an embodiment of the present invention;
FIG. 6 is a schematic view of an alternative overlapping photosensitive area according to an embodiment of the invention;
FIG. 7 is a schematic view of a processing flow of the photosensitive elements and the lens according to the preferred embodiment of the invention;
fig. 8 is a schematic flow chart illustrating a process of setting a lens magnification relationship according to a preferred embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
An embodiment of the present invention provides a photosensitive component, as shown in fig. 1, where the photosensitive component is disposed inside an image capturing device (the image capturing device is not shown in the figure), and the photosensitive component includes:
a photosensitive plate 10, wherein the photosensitive plate 10 is used for fixing a photosensitive resistor 12;
a lens 14, wherein the lens 14 is arranged opposite to the photosensitive plate 10, so that the photosensitive resistor 12 is opposite to at least part of the lens 14;
the driving device 16 is in driving connection with the lens 14 to drive the lens 14 to move in a direction close to or away from the photosensitive plate, so that an overlapping area of a first collection angle of view of the photosensitive resistor 12 on an imaging area through the lens 14 and a second collection angle of view of the image collection device on the imaging area is larger than a threshold value.
Through the technical scheme of the invention, the photosensitive assembly is arranged in the image acquisition device, wherein the photosensitive assembly comprises: the photosensitive plate is used for fixing the photosensitive resistor; the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens; the driving device is in driving connection with the lens to drive the lens to move along the direction close to or far away from the photosensitive plate, so that the overlapping area of a first acquisition field angle of the photosensitive resistor to an imaging area through the lens and a second acquisition field angle of the imaging area through the image acquisition device is larger than a threshold value.
As shown in fig. 2, in the embodiment of the present invention, the driving device 16 includes: a drive motor 160 and a transmission member 162, the transmission member 162 comprising: the output shaft of the driving motor is connected with the driving lead screw 164, and the lead screw 166 is mounted on the lens, so that the driving device drives the lens to move in a direction close to or away from the photosensitive plate through the driving component, so that the overlapping area of the first collecting visual angle and the second collecting visual angle is larger than a threshold value.
In an embodiment of the present invention, there is further provided an image capturing device including the photosensitive assembly described in any one of the above.
In the embodiment of the present invention, as shown in fig. 2, the motor 160 is driven and the transmission member 162, and the transmission member 162 includes: a drive screw 164 and a screw nut 166, which are engaged with each other, as shown in fig. 3, the image capturing apparatus further includes: and the fixing piece 18 is used for fixing the photosensitive plate and the driving device on two sides respectively, wherein the fixing piece is provided with an opening so that a transmission screw rod of the driving motor extends out to be matched and connected with the screw rod nut.
In an embodiment of the present invention, the lens corresponds to at least a portion of a front face of the image capturing device, and the front face is provided with an opening, so that the lens captures light through the opening on the front face, and a specific structural schematic diagram may refer to fig. 4.
In an embodiment of the present invention, a lens driving method is further provided, where any one of the photosensitive elements is applied, fig. 5 is a flowchart of an alternative lens driving method according to an embodiment of the present invention, as shown in fig. 5, including the following steps:
step S502, controlling the driving device to rotate;
step S504, the lens is driven to move in a direction approaching or departing from the photosensitive plate by the rotation of the driving device, so that the overlapping area of the first collecting angle of view and the second collecting angle of view of the photosensitive resistor is greater than a threshold.
Through the technical scheme of the invention, the photosensitive assembly is arranged in the image acquisition device, wherein the photosensitive assembly comprises: the photosensitive plate is used for fixing the photosensitive resistor; the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens; the driving device is in driving connection with the lens to drive the lens to move along the direction close to or far away from the photosensitive plate, the lens is driven to move along the direction close to or far away from the photosensitive plate through rotation of the driving device, so that the overlapping area of the first acquisition field angle and the second acquisition field angle of the photosensitive resistor is larger than a threshold value.
In order to better achieve the purpose that the lens is driven to move in the direction close to or far away from the photosensitive plate by the rotation of the driving device, so that the overlapping area of the first collecting angle of view and the second collecting angle of view of the photosensitive resistor is larger than the threshold, before the driving device is controlled to rotate, the above technical solution further includes: and setting a linear relation between the first lens multiple of the lens and the second lens multiple of the image acquisition device.
After the linear relationship is adjusted, the overlapping area of the first acquisition field angle and the second acquisition field angle is larger than a threshold value by the following way: adjusting the second lens multiple to a third lens multiple; and according to the linear relation, obtaining a fourth lens multiple corresponding to the third lens multiple as the current lens multiple of the lens, so that the overlapping area of the first collection angle of view and the second collection angle of view of the photoresistor is larger than a threshold value.
In conclusion, according to the technical scheme, the photosensitive scene of the photosensitive resistor is ensured to be even overlapped in the photosensitive scene of the image acquisition device through the arrangement of the photosensitive component, and the problem that errors easily occur in day and night mode switching is solved.
In order to better understand the above technical solutions, the following technical solutions are explained with reference to an example, but are not used to limit the above technical solutions.
In an alternative embodiment, as shown in fig. 2, a miniature zoom lens (equivalent to the lens 14) is correspondingly disposed in front of the photo resistor 12, and the miniature zoom lens is dragged by a zoom motor (equivalent to the driving motor 160), wherein the photo resistor 12 and the photo holder (equivalent to the holder 18 of the above embodiment) may be integrally disposed, and when the angle of view of the photo resistor for collecting light needs to be adjusted, the zoom motor rotates to drive the miniature zoom lens to zoom, and further the angle of view of the photo resistor for collecting light may be linked with the zoom of the lens.
As shown in fig. 2, the entire photosensitive assembly is fixed to the camera cavity. Through miniature camera lens and external sealing to the optical axis of light miniature camera lens is unanimous with the optical axis of camera lens, and then when the camera lens zooms, the photoresistor just can zoom in step to reach the light intensity region that the photoresistor responded to, roughly coincide with the light intensity region of camera lens formation of image, figure 6 shows the light intensity region that the photoresistor responded to, roughly coincide with the schematic diagram of the light intensity region of camera lens formation of image, as shown in figure 6, the size of camera, relative camera and the regional distance of formation of image, can regard as a point. Therefore, the angle of view of the photosensitive collection and the angle of view of the lens are approximately coincident when viewed from a distance. Is favorable for the photosensitive light intensity induction accuracy.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The following explains the above technical solution with reference to a preferred embodiment, but is not limited to the technical solution of the embodiment of the present invention, as shown in fig. 7, the photoresistor senses light intensity through the miniature lens, and the camera also senses light intensity, and the miniature zoom lens is correspondingly set to a corresponding multiple through the zoom control of the lens of the camera, specifically, as shown in fig. 8, the corresponding setting of the miniature zoom lens to a corresponding multiple according to the zoom control of the lens of the camera can be achieved by the following technical solutions:
in the preferred embodiment of the invention, the multiple y corresponding to the miniature lens is calibrated according to the lens multiple x, and the relationship between the two is recorded as y ═ kx + b (formula one); further ensuring that the photosensitive field of view of the photoresistor is within the field of view of the lens, and setting the lens multiple x0 and the micro lens multiple y0 in default configuration of the camera to accord with the relation of the formula I according to the formula I;
step S801, electrifying the equipment, wherein the photosensitive view is in the lens view range;
step S802, zooming the device lens to x1 according to the monitoring requirement;
step S803, according to the formula one, y1 ═ k × x1+ b is obtained;
and step S804, setting the times of the micro lens to y1, and ensuring that the photosensitive view of the photoresistor is within the view range of the equipment.
To sum up, the embodiments of the present invention and the above technical solutions of the preferred embodiments add the micro lens and the zoom motor to form a photosensitive assembly on the basis of the photosensitive of the photo resistor, so as to ensure that the photosensitive field of the photo resistor is within the photosensitive field of the camera, even coincident, and solve the problem of abnormal day and night mode switching.
An embodiment of the present invention further provides a storage medium including a stored program, wherein the program executes any one of the methods described above.
Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:
s1, controlling the driving device to rotate;
and S2, driving the lens to move in a direction close to or far away from the photosensitive plate through the rotation of the driving device, so that the overlapping area of the first collection angle of view and the second collection angle of view of the photosensitive resistor is larger than a threshold value.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A photosensitive assembly, wherein the photosensitive assembly is disposed inside an image capture device, comprising:
the photosensitive plate is used for fixing the photosensitive resistor;
the lens is arranged opposite to the photosensitive plate so that the photosensitive resistor is opposite to at least part of the lens;
the driving device is in driving connection with the lens to drive the lens to move in a direction close to or far away from the photosensitive plate, so that an overlapping area of a first collection field angle of the photosensitive resistor on an imaging area through the lens and a second collection field angle of the image collection device on the imaging area is larger than a threshold value.
2. The photosensitive assembly of claim 1,
the driving device includes: the output shaft of the driving motor is connected with the transmission component, so that the driving device drives the lens to move in the direction close to or far away from the photosensitive plate through the transmission component, and the overlapping area of the first acquisition angle of view and the second acquisition angle of view is larger than a threshold value.
3. The photosensitive assembly of claim 2,
the transmission member includes: the driving motor is arranged on the lens, and the driving screw and the screw nut are matched with each other.
4. An image capturing device comprising a photosensitive assembly according to any one of claims 1 to 3.
5. The image capturing device according to claim 4, wherein the driving device includes: a drive motor and a transmission member, the transmission member comprising: drive screw and screw nut that mutually support, image acquisition device still includes: the fixing piece, the both sides of fixing piece are fixed respectively photosensitive plate with drive arrangement, wherein, the fixing piece is equipped with an opening, so that driving motor's drive screw stretch out with screw nut cooperation is connected.
6. The image capturing device of claim 4, wherein the lens corresponds to at least a portion of a front face of the image capturing device, and the front face has an opening such that the lens captures light through the opening in the front face.
7. A lens driving method, to which the photosensitive element according to any one of claims 1 to 3 is applied, comprising:
controlling the driving device to rotate;
the lens is driven to move in a direction close to or far away from the photosensitive plate through the rotation of the driving device, so that the overlapping area of a first collection visual field angle of the photosensitive resistor on an imaging area through the lens and a second collection visual field angle of the imaging area through the image collection device is larger than a threshold value.
8. The method of claim 7, wherein prior to controlling the drive means to rotate, the method further comprises:
and setting a linear relation between the first lens multiple of the lens and the second lens multiple of the image acquisition device.
9. The method of claim 8, wherein the overlap region of the first acquisition field of view and the second acquisition field of view is greater than a threshold by:
adjusting the second lens multiple to a third lens multiple;
and according to the linear relation, obtaining a fourth lens multiple corresponding to the third lens multiple as the current lens multiple of the lens, so that the overlapping area of the first acquisition field angle of the imaging area of the photoresistor through the lens and the second acquisition field angle of the imaging area of the image acquisition device is larger than a threshold value.
10. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 7 to 9 when executed.
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