CN214704262U

CN214704262U - External flash lamp and color correction system of external flash lamp

Info

Publication number: CN214704262U
Application number: CN202120186202.5U
Authority: CN
Inventors: 曾伟玲
Original assignee: Yiyou Co Ltd
Current assignee: Yiyou Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-11-12
Anticipated expiration: 2031-01-22

Abstract

The application provides an external flash lamp and a color correction system of the external flash lamp, which comprises a light source unit, a driving unit, a first communication unit and a color correction processing unit. The light source unit includes one or more LED light sources. The driving unit is used for driving the light source unit to emit light; the first communication unit is used for communicating with the terminal equipment so as to receive a color correction control instruction sent by the terminal equipment; the color correction processing unit is connected with the driving unit and electrically connected with the first communication unit, receives the color correction control instruction transmitted by the first communication unit, performs color correction processing on the light-emitting information of the light source unit, and generates color correction result information; the driving unit drives the light source unit to emit light according to the color correction result information. The application realizes the color correction of the external flash lamp light source unit.

Description

External flash lamp and color correction system of external flash lamp

Technical Field

The application relates to the technical field of flash lamps for shooting, in particular to an external flash lamp and a color correction system of the external flash lamp.

Background

With the development of mobile communication technology, mobile terminals play an increasingly important role in the life and work of people. Especially, some mobile terminal devices with camera function, such as mobile phone, MP4, PDA, notebook computer, etc., the camera function of these mobile terminals brings great fun to people's life. The mobile terminal with the photographing function needs a light source, and needs artificial light to assist photographing except natural light, so that the artificial light source of the mobile terminal with the photographing function cannot meet the actual use requirement, and people often use an external flash lamp to assist photographing.

However, after the LED lamp bead in the external flash lamp is used for a long time, there is a deviation between the chromaticity and the luminous intensity, so that the actual luminous parameters such as the luminance and the chromaticity cannot reach the preset luminous parameters, and the expected light supplement effect cannot be achieved.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

One object of the present application is to provide an external flash lamp that can be used to color correct a light-emitting unit.

In order to solve the technical problem, the following technical scheme is adopted in the application:

according to an aspect of the present application, there is provided an external flash lamp including:

a light source unit;

a driving unit for driving the light source unit to emit light;

the first communication unit is used for communicating with the terminal equipment so as to receive a color correction control instruction sent by the terminal equipment;

the color correction processing unit is connected with the driving unit and electrically connected with the first communication unit, receives the color correction control instruction transmitted by the first communication unit, and performs color correction processing on the light-emitting information of the light source unit to generate color correction result information; the driving unit drives the light source unit to emit light according to the color correction result information.

According to an embodiment of the present application, the first communication unit is further configured to receive light-emitting information sent by the terminal device, where the light-emitting information is collected by a color correction detection device.

According to an embodiment of the present application, the first communication unit is configured to receive arrangement data of light-emitting information sent by a terminal device; the arrangement data of the luminous information is formed by arranging and processing the luminous information collected by the color correction detection equipment by the terminal equipment.

According to an embodiment of the present application, the first communication unit is a wireless communication unit;

the wireless communication unit comprises one or more of a WIFI module, a Bluetooth module, a Zig-Bee module and an infrared communication module.

According to an embodiment of the present application, the color correction device further includes a second communication unit, where the second communication unit is configured to be connected to a color correction detection device, and the color correction detection device is configured to detect light emitting information of the light source unit;

and the color correction processing unit receives the light-emitting information through the second communication unit.

According to an embodiment of the present application, the first communication unit includes a communication interface; wherein, the communication interface is one of USB interface, TYPE C interface, RS232 interface, RS485 interface.

According to an embodiment of the application, the external flash lamp further comprises a storage unit, and the storage unit is used for storing the light-emitting information.

According to an embodiment of the present application, the driving unit further includes a timing receiving end, where the timing receiving end is used for connecting with the terminal device to receive a timing control instruction sent by the terminal device.

According to an embodiment of the application, the external flash lamp further comprises a time sequence control unit, wherein the time sequence control unit is electrically connected with the driving unit and is electrically connected with the color correction detection equipment; wherein the correction detection circuit is used for detecting the light emitting information of the light source unit;

and the time sequence control unit sends time sequence signals to the driving unit and the color correction detection equipment according to the color correction control instruction so as to enable the light source unit to emit light in a preset time sequence and enable the color correction detection equipment to acquire the light emitting information in the preset time sequence.

According to an embodiment of the application, the external flash lamp further comprises a light-emitting control unit, and the light-emitting control unit is electrically connected with the color correction processing unit;

the light-emitting control unit is provided with a burning end which is electrically connected with the color correction processing unit and receives the color correction result information so as to adjust a light-emitting control program in the light-emitting control unit;

the driving unit is electrically connected with the light-emitting control unit so as to drive the light source unit to emit light according to the adjusted light-emitting control program.

The application also provides a color correction system of the external flash lamp, which comprises the external flash lamp, color correction detection equipment and terminal equipment; the external flash lamp is in communication connection with the terminal equipment, and the color correction equipment is in communication connection with the terminal equipment;

the color correction device is used for detecting the light-emitting information of the external flash lamp, and the color correction processing unit of the external flash lamp processes the light-emitting information under the control of the terminal device to generate color correction result information; and the driving unit of the external flash lamp drives the light source unit of the external flash lamp to emit light according to the color correction result information.

According to an embodiment of the application, the terminal device comprises a display unit, and the display unit is used for displaying a color correction control GUI interface so as to input a color correction control instruction.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

In the application, a first communication unit is used for communicating with a terminal device so as to receive a color correction control instruction sent by the terminal device; the color correction processing unit receives the color correction control instruction transmitted by the first communication unit, performs color correction processing on the light-emitting information of the light source unit, and generates color correction result information; the driving unit drives the light source unit to emit light according to the color correction result information, thereby realizing the light emission correction of the light source unit.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a block diagram illustrating a circuit configuration of an external flash according to an example embodiment.

Fig. 2 is a block diagram of a circuit configuration of a color correction system of an external flash according to an exemplary embodiment.

The reference numerals are explained below: 10. an external flash lamp; 11. a light source unit; 12. a drive unit; 13. a first communication unit 14, a color correction processing unit; 15. a second communication unit; 20. a color correction detection device; 30. and (4) terminal equipment.

Detailed Description

While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.

Thus, a feature indicated in this specification is intended to describe one of the features of an embodiment of the application and does not imply that every embodiment of the application must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as up, down, left, right, front, and rear) are used to explain the structure and movement of the various elements of the present application not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of the present specification.

This application first provides an external flash light, and external flash light is used for carrying out the school colour to its self. Color correction can refer to matching the actual light-emitting parameters of the external flash lamp with the set light-emitting parameters; the consistency of the light-emitting parameters of each LED lamp bead in the external flash lamp can be adjusted.

Referring to fig. 1, in an embodiment, an external flash 10 includes a light source unit 11, a driving unit 12, a first communication unit 13, and a color correction processing unit 14. The light source unit 11 includes one or more LED light sources. The driving unit 12 is used for driving the light source unit 11 to emit light; the first communication unit 13 is configured to communicate with the terminal device 30 to receive a color correction control instruction sent by the terminal device 30; the color correction processing unit 14 is connected with the driving unit 12 and electrically connected with the first communication unit 13, and the color correction processing unit 14 receives the color correction control instruction transmitted by the first communication unit 13, performs color correction processing on the light emitting information of the light source unit 11, and generates color correction result information; the driving unit 12 drives the light emission of the light source unit 11 according to the color correction result information.

In the present embodiment, it is the color correction control instruction transmitted by the terminal device 30. The terminal device 30 may be an intelligent terminal, such as a mobile phone, a tablet, a notebook; the wearable device can also be an intelligent wearable device, such as an intelligent head-mounted device, an intelligent bracelet, an intelligent belt and the like.

In an embodiment, the terminal device 30 includes a display unit, and the display unit is configured to display a GUI (Graphical User Interface) Interface for inputting the color correction control instruction. Specifically, the color correction application software is installed in the terminal device 30, and when the color correction application software is run, a color correction control GUI interface may be displayed on the display screen. The color correction control GUI interface has a plurality of controls for a user to issue a color correction start command, set a color correction parameter, select a color correction mode (collectively referred to as a color correction control command herein), and the like. The color correction control GUI interface may also have a display window to display the color correction process. The embodiment improves the man-machine interaction capability, and is convenient for the user to correct different parameters of the external flash lamp 10 according to the requirement of the user and to correct the parameters to the target parameters meeting the requirement of the user.

After receiving a color correction control instruction sent by a user, the intelligent terminal transmits the instruction to the color correction processing unit 14 through the first communication unit 13, so that the color correction processing unit 14 performs color correction processing on the light-emitting information of the external flash lamp 10 according to the color correction control instruction, and corresponding color correction result information is generated.

Here, the light emission information of the light source unit 11 described above is collected by the color correction detection device 20. The lighting information here includes one or more kinds of information of luminance, chromaticity, saturation, and the like. The external flash 10 may be used as a whole to collect the brightness, chromaticity, saturation, and other parameters. In another embodiment, the lighting information is that the flash lamp includes a plurality of LED light sources, and each of the LED light sources has one or more of parameters of brightness, chromaticity, saturation, and the like, and one or more of parameters of chromaticity and saturation. That is, in this embodiment, each LED light source is used as a minimum unit to perform emission correction on each LED in a targeted manner, so as to improve the accuracy of emission correction. When in detection, each LED light source can be made to emit light independently, so that the light emitting information of the LED light source can be acquired.

The color correction detection device 20 may include a color pickup unit, a data conversion unit, a filter unit, and the like. The color pickup unit may include various types of photosensors according to an object to be corrected; such as a luminance sensor, a chrominance sensor, a color temperature sensor, etc. The light-emitting information collecting unit generally has a collecting window, and the collecting window is exposed on the surface of the color correction device. The collection window is disposed facing the light emitting surface of the external flash 10, so that the color pickup unit can receive the light emitted from the external flash 10. Here, the light emitted from the external flash 10 may be picked up a plurality of times. Illustratively, the external flash 10 is operated in a plurality of lighting modes to sample lighting information. The light emission mode here includes a flash mode, a model lamp mode, a normally on mode, and the like. In each mode, the lighting information is picked up at least once. The data conversion unit is used for converting the analog quantity of the sampled luminescence information into corresponding digital quantity. The filtering unit is used for filtering the input or the output of the data conversion unit so as to reduce noise interference.

The color correction processing unit 14 may include a data arrangement unit. The data arrangement unit is connected with the analog-to-digital conversion circuit to carry out data arrangement on the digital quantity of the collected luminous information. The specific data arrangement mode may be determined according to a color correction algorithm, or may be arranged in a one-to-one correspondence according to the position arrangement of the LEDs in the external flash 10. Actually, the data arranging unit may also be provided in the terminal device 30.

In an example, the light emitting information of the light source unit 11 may be pre-stored in the color correction processing power supply after being detected by the color correction detection device, and may be called when the color correction processing is required.

In another example, since the color correction detection device 20 may be connected to the terminal device 30, after detecting the light emitting information, the color correction detection device 20 may transmit the light emitting information to the terminal device 30, and the terminal device 30 may directly transmit the original light emitting information to the external flash 10, or may transmit arrangement data, which is subjected to analog-to-digital conversion and data arrangement to form the light emitting information, to the external flash 10.

Specifically, in an embodiment, the first communication unit 13 is further configured to receive light-emitting information sent by the terminal device 30, where the light-emitting information is collected by the color correction detection device 20.

In another embodiment, the first communication unit 13 is configured to receive arrangement data of the light-emitting information transmitted by the terminal device 30; the arrangement data of the luminescence information is formed by arranging the luminescence information collected by the color correction detection device 20 by the terminal device 30.

In this embodiment, the terminal device 30 performs the arrangement processing on the collected lighting information, and since the data arrangement requires a faster operation speed and a larger storage capacity, the data arrangement speed can be increased by using a powerful processor and a larger storage capacity of the terminal device 30. More importantly, the arrangement unit is not required to be arranged in the color correction device, so that the size of the color correction device can be reduced, and the portability of the color correction device is improved.

In the above embodiment, the first communication unit 13 of the external flash 10 is used for communicating with the terminal device 30. The first communication unit 13 may be a wireless communication unit; the wireless communication unit may be built in the color calibration device or may be externally arranged outside the color calibration device, such as an external USB wireless transceiver. The first communication unit 13 may be a wireless communication unit; the wireless communication unit comprises one or more of a WIFI module, a Bluetooth module, a Zig-Bee module and an infrared communication module. This embodiment improves the convenience of communication between the external flash 10 and the terminal device 30, and can avoid the need to provide an interface on the external flash 10 through the wireless communication unit.

In another embodiment, the first communication unit 13 comprises a communication interface; wherein, the communication interface is one of a USB interface, a TYPE C interface, an RS232 interface and an RS485 interface. Here, there may be one or more communication interfaces.

In another manner of acquiring the light emitting information by the external flash 10, the color correction detection device 20 may directly send the light emitting information to the external flash 10, in this manner, the color correction detection device 20 may directly send the original light emitting information to the external flash 10, or send the arrangement data that is subjected to analog-to-digital conversion and arrangement to form the light emitting information to the external flash 10.

Referring to fig. 1, in particular, in an embodiment, the color calibration apparatus further includes a second communication unit 15, where the second communication unit 15 is configured to connect with a color calibration detection apparatus 20, and the color calibration detection apparatus 20 is configured to detect light emitting information of the light source unit 11; the color correction processing unit 14 receives the light emission information through the second communication unit 15.

In this embodiment, the second communication unit 15 may be a wireless communication unit; the wireless communication unit comprises one or more of a WIFI module, a Bluetooth module, a Zig-Bee module and an infrared communication module. This embodiment improves the convenience of the communication of the external flash 10 with the color correction detection device 20.

The second communication unit 15 may also be a communication interface electrically connected to the color correction processing unit 14, such as one of a USB interface, a TYPE C interface, an RS232 interface, and an RS485 interface.

In one embodiment, the external flash 10 further includes a storage unit for storing the light emitting information. The storage unit is electrically connected with the first communication unit 13 or the second communication unit 15 so as to receive the light-emitting information through the first communication unit 13 or the second communication unit 15. The storage unit may be a ROM, a RAM, or the like, and may also be a storage medium such as a usb disk.

The color correction processing unit 14 further includes a data processing unit, in which a color correction processing algorithm is stored, and the color correction processing algorithm performs logic calculation on the arranged light emitting data, so as to generate color correction result information. The color correction result information may be an adjustment program or a specific light emission correction value.

Illustratively, in one example, the data processing unit includes a correction chip having therein a correction coefficient matrix, and the calculation processing is performed on the arranged sample data based on the correction coefficient matrix.

Or, the preset parameter value is compared with the sampled emission information arrangement data to correct the driving current of the external flash 10, and the corrected driving current drives the external flash 10 to enable the actual emission parameter of the flash to exactly match the set parameter.

In one embodiment, the driving unit 12 further includes a timing receiving end, which is configured to connect with the terminal device 30 to receive the timing control command sent by the terminal device 30. The correction detection device acquires the light emitting information of the external flash lamp 10 according to the time sequence control instruction.

The timing receiving end and the terminal device 30 may be directly connected or indirectly connected, and is not limited herein. The timing control instruction is used for controlling the driving unit 12 to drive the light source unit 11 to emit light at a preset timing, and controlling the light-emitting information collecting unit to collect light-emitting information at a preset timing.

Here, the terminal device 30 sends a corresponding timing control signal to the timing receiving end and the color correction detecting apparatus 20 according to the color correction control command received by itself. The timing control command may include a light-emitting mode execution sequence, a light-emitting frequency, a brightness variation timing sequence, a color variation timing sequence command, and the like of the external flash 10. The time sequence control instruction controls the color correction detection device 20 to collect the light emitted by the external flash lamp 10 according to a preset time sequence, so that the collection time sequence and the light emitting time sequence have synchronism, the time sequence information corresponding to the collected light emitting information can be determined, and the correction accuracy is improved. Moreover, the embodiment allows the color correction detection device 20 not to perform data acquisition when the external flash lamp 10 does not emit light, thereby being beneficial to reducing noise interference suffered by the color correction detection device 20 and improving the accuracy of data arrangement; and is beneficial to saving energy.

In one embodiment, the external flash 10 further includes a light-emitting control unit electrically connected to the color correction processing unit 14; the light-emitting control unit is provided with a burning end which is electrically connected with the color correction processing unit 14, and the burning end receives the color correction result information so as to adjust a light-emitting control program in the light-emitting control unit; the driving unit 12 is electrically connected to the light emission control unit to drive the light source unit 11 to emit light according to the adjusted light emission control program.

It should be understood that the setting of the burning end indicates that a burning module is provided in the color calibration processing unit 14, and the burning module can perform handshake communication with the light-emitting control unit and satisfy the related communication protocol to smoothly perform program burning, adjust the original light-emitting control program, and adjust the driving current to the light source unit 11, thereby fundamentally calibrating the light-emitting effect deviation problem of the external flash lamp 10.

The light emission information and the color correction result information only indicate the substantial meaning of the signal. In fact, during the signal transmission, changes in form can occur; for example, conversion between analog and digital quantities, transmission in a single signal or transmission in a packet format, etc., and is not particularly limited herein.

Referring to fig. 2, the present application further provides a color correction system of an external flash 10, including the external flash 10, a color correction detection device 20, and a terminal device 30 in the foregoing embodiment; the external flash lamp 10 is in communication connection with the terminal device 30, and the color correction device is in communication connection with the terminal device 30; the color correction device is used for detecting the light-emitting information of the external flash lamp 10, and the color correction processing unit 14 of the external flash lamp 10 processes the light-emitting information under the control of the terminal device 30 to generate color correction result information; the driving unit 12 of the external flash 10 drives the light emission of the light source unit 11 of the external flash 10 according to the color correction result information.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An external flash lamp, comprising:

a light source unit;

a driving unit for driving the light source unit to emit light;

2. The external flash lamp of claim 1, wherein the first communication unit is further configured to receive light-emitting information sent by the terminal device, and the light-emitting information is collected by a color correction detection device.

3. The external flash lamp of claim 1, wherein the first communication unit is configured to receive arrangement data of light-emitting information sent by a terminal device; the arrangement data of the luminous information is formed by arranging and processing the luminous information collected by the color correction detection equipment by the terminal equipment.

4. The external flashlight of claim 1, wherein the first communication unit comprises a wireless communication unit;

5. The external flash lamp of claim 1, further comprising a second communication unit, wherein the second communication unit is configured to connect with a color correction detection device, and wherein the color correction detection device is configured to detect light emitting information of the light source unit;

6. The external flash lamp of claim 1, wherein the first communication unit comprises a communication interface; wherein, the communication interface is one of USB interface, TYPE C interface, RS232 interface, RS485 interface.

7. The external flash lamp of claim 1, further comprising a storage unit for storing the light emitting information.

8. The external flash lamp of claim 1, wherein the driving unit further comprises a timing receiving end, and the timing receiving end is configured to connect with the terminal device to receive a timing control command sent by the terminal device.

9. The external flash lamp of claim 1, further comprising a timing control unit electrically connected to the driving unit; the time sequence control unit is electrically connected with the color correction detection equipment; the color correction detection circuit is used for detecting the light-emitting information of the light source unit;

10. The external flash lamp of claim 1, further comprising a light emission control unit electrically connected to the color correction processing unit;

11. A color correction system of an external flash lamp, which is characterized by comprising the external flash lamp of any one of claims 1 to 10, a color correction detection device and a terminal device; the external flash lamp is in communication connection with the terminal equipment, and the color correction equipment is in communication connection with the terminal equipment;

12. The color correction system according to claim 11, wherein the terminal device comprises a display unit for displaying a color correction control GUI interface for inputting a color correction control instruction.