A streak camera with self-detection function and self-detection method thereof

Abstract

The present invention provides a streak camera with a self-detection function and a self-detection method thereof, which relates to the technical field of streak camera detection methods, and aims to quickly judge the performance of a camera through a convenient detection system, wherein a camera lens and a self-detection module are arranged at the front end of a camera chassis; a synchronous trigger signal output connector is used to output a trigger signal for a long pulse light source module; an optical imaging lens is installed at the front end of the camera chassis, a slit is arranged at the front center of the optical imaging lens, a detachable resolution board is closely attached to the front end of the slit, a long pulse light source module is arranged above the middle section of the optical imaging lens, an input optical module is installed at the front end of the optical imaging lens, an optical fiber connector is arranged at the front center of the input optical module, and a collimation module is arranged at the rear end of the optical fiber connector; the output interface of the long pulse light source module is connected to the optical fiber connector through an optical fiber. The present invention has the advantages of convenient camera performance detection and simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of streak camera detection methods, and in particular to a streak camera with a self-detection function and a self-detection method thereof. Background Art

[0002] The optical streak camera is a core diagnostic device widely used in various ultrafast transient physics studies.

[0003] When conducting certain physical experiments, the camera needs to be transported and moved over long distances, which may cause damage to the camera. However, due to the limitations of the experimental site and testing conditions, it is impossible to quickly judge the camera's performance. If the camera is tested with equipment, additional testing equipment will also cause a transportation burden.

[0004] Therefore, it is necessary to optimize the design so that the camera performance can be quickly judged through a convenient detection system. Summary of the invention

[0005] The object of the present invention is to provide a streak camera with a self-detection function and a self-detection method thereof, which can quickly judge the camera performance through a convenient detection system.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention provides a streak camera with a self-detection function, wherein a camera lens and a self-detection module are arranged at the front end of the camera chassis, for obtaining images and obtaining performance parameters of the camera to judge the camera performance;

[0008] The camera lens and self-test module include a synchronous trigger signal output connector, an input optical module, a resolution board, an optical fiber connector, an optical fiber, a collimation module, a long pulse light source module and an optical imaging lens;

[0009] The synchronous trigger signal output connector is used to output a trigger signal for the long pulse light source module;

[0010] The optical imaging lens is installed at the front end of the camera chassis, a slit is provided at the center of the front end of the optical imaging lens, the front end of the slit is tightly attached to the detachable resolution board, the long pulse light source module is provided above the middle section of the optical imaging lens, an input optical module is installed at the front end of the optical imaging lens, the optical fiber connector is provided at the center of the front end of the input optical module, and the collimation module is provided at the rear end of the optical fiber connector; the output interface of the long pulse light source module is connected to the optical fiber connector through an optical fiber.

[0011] Preferably, a front panel is provided at the front end of the camera chassis, a hollow structure is provided below the front panel, and the optical imaging lens is installed at the front end of the hollow structure.

[0012] Preferably, the optical imaging lens is provided with threads on the outside, and the input optical module is installed on the front end of the optical imaging lens through a threaded interface.

[0013] Preferably, the long pulse light source module is fixed to the outer tube of the optical imaging lens through a threaded interface.

[0014] Preferably, it also includes an interface module and a camera internal structure;

[0015] The interface module is arranged at the rear end of the camera chassis; and the camera internal structure is installed inside the camera chassis.

[0016] Preferably, the internal structure of the camera includes a scanning image converter, an image intensifier, an image recording module, a power supply system module, a power conversion module, a synchronization trigger module and a controller module;

[0017] The scanning image converter is collinear with the center line of the optical imaging lens, and the image intensifier and the image recording module are sequentially arranged at the rear end of the scanning image converter;

[0018] The power conversion module is used to convert the mains electricity into low-voltage DC electricity and transmit it to the controller module. The controller module performs voltage transformation and outputs multiple groups of working low voltages to the power supply system module, the synchronous trigger module and the image recording module. The power supply system module performs voltage transformation and supplies power to the scanning image converter and the image intensifier respectively.

[0019] Preferably, the interface module includes a power supply input socket, a synchronous trigger signal input connector and a communication optical fiber connector;

[0020] The rear end of the camera chassis is provided with a rear panel, and the power input socket, the synchronous trigger signal input connector and the communication optical fiber connector are all arranged on the rear panel;

[0021] The power input socket is used to transmit the mains power to the internal structure of the camera;

[0022] The synchronous trigger signal input connector is used to introduce a synchronous trigger input pulse.

[0023] The present invention also provides a self-detection method for a streak camera with a self-detection function, based on any one of the streak cameras with a self-detection function described above, comprising the following steps:

[0024] The long pulse light source module outputs a light signal;

[0025] The optical signal is input into the optical fiber connector through the optical fiber;

[0026] The optical fiber connector inputs the optical signal into the collimation module;

[0027] The collimation module expands the optical signal and converts it into parallel light, and then irradiates the resolution plate;

[0028] The optical signal carrying the image of the resolution plate passes through the slit and is imaged onto the cathode of the scanning image converter tube through the optical imaging lens;

[0029] The camera performance parameters are obtained through the resolution plate image to realize the judgment of the camera performance.

[0030] Preferably, the camera performance parameters include spatial resolution and scanning linearity.

[0031] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0032] The present invention integrates a detection system, and can measure the performance of the camera through its own detection system. It can quickly detect and judge the performance of the camera without the need for additional detection equipment and conditions, and will not increase the burden of transportation and carrying;

[0033] The resolution board used to obtain the detection result of the present invention is a detachable structure. After completing the performance judgment of the camera, the resolution board at the front end of the front input optical module and the imaging lens can be quickly removed, and the actual working state of the camera can be restored through simple structural disassembly;

[0034] The invention has reasonable design, simple structure, high cost performance, convenient transportation and operation, and is easy to carry to any camera use location, and is easy to promote and implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of a streak camera with a self-detection function provided in Embodiment 1 of the present invention;

[0036] Icons: 101- camera chassis, 102- power conversion module, 103- power input socket, 104- synchronization trigger signal input connector, 105- communication optical fiber connector, 106- rear panel, 107- image recording module, 108- power supply system module, 109- image intensifier, 110- scanning image converter, 111- synchronization trigger module, 112- front panel, 113- optical imaging lens, 114- slit, 115- resolution board, 116- input optical module, 117- collimation module, 118- optical fiber, 119- long pulse light source module, 120- synchronization trigger signal output connector, 121- low voltage connector, 122- controller module. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Example 1

[0039] The present invention provides a streak camera with a self-detection function. Figure 1 , a camera lens and a self-test module are provided at the front end of the camera chassis 101, which are used to obtain images and obtain performance parameters of the camera to judge the camera performance;

[0040] The camera lens and self-test module includes a synchronous trigger signal output connector 120, an input optical module 116, a resolution board 115, an optical fiber connector, an optical fiber 118, a collimation module 117, a long pulse light source module 119 and an optical imaging lens 113;

[0041] The synchronous trigger signal output connector 120 is used to output a trigger signal for the long pulse light source module 119;

[0042] The optical imaging lens 113 is installed at the front end of the camera chassis 101, and a slit 114 is provided at the center of the front end of the optical imaging lens 113. The front end of the slit 114 is tightly attached to the detachable resolution board 115. The long pulse light source module 119 is provided above the middle section of the optical imaging lens 113. The input optical module 116 is installed at the front end of the optical imaging lens 113, and the optical fiber connector is provided at the center of the front end of the input optical module 116. The collimation module 117 is provided at the rear end of the optical fiber connector; the output interface of the long pulse light source module 119 is connected to the optical fiber connector via an optical fiber 118.

[0043] In this embodiment, a front panel 112 is disposed at the front end of the camera housing 101 , a hollow structure is provided below the front panel 112 , and the optical imaging lens 113 is installed at the front end of the hollow structure.

[0044] Furthermore, the optical imaging lens 113 is provided with threads on its exterior, and the input optical module 116 is installed on the front end of the optical imaging lens 113 via a threaded interface.

[0045] In addition, the long pulse light source module 119 is fixed to the outer tube of the optical imaging lens 113 via a threaded interface.

[0046] On the other hand, it also preferably includes an interface module and a camera internal structure;

[0047] The interface module is arranged at the rear end of the camera chassis 101 ; and the camera internal structure is installed inside the camera chassis 101 .

[0048] The internal structure of the camera includes a scanning image converter 110, an image intensifier 109, an image recording module 107, a power supply system module 108, a power conversion module 102, a synchronization trigger module 111 and a controller module 122;

[0049] The scanning image converter tube 110 may be installed at the rear end of the hollow structure of the front panel 112 and be colinear with the center line of the optical imaging lens 113, and the image intensifier 109 and the image recording module 107 are sequentially arranged at the rear end of the scanning image converter tube 110;

[0050] The power conversion module 102 is used to convert the mains electricity into low-voltage DC electricity and transmit it to the controller module 122. The controller module 122 performs voltage transformation and outputs multiple groups of working low voltages to the power supply system module 108, the synchronous trigger module 111 and the image recording module 107. The power supply system module 108 performs voltage transformation and supplies power to the scanning image converter 110 and the image intensifier 109 respectively.

[0051] As a preferred solution of this embodiment, the interface module includes a power input socket 103, a synchronous trigger signal input connector 104 and a communication optical fiber connector 105;

[0052] The rear end of the camera case 101 is provided with a rear panel 106, and the power input socket 103, the synchronous trigger signal input connector 104 and the communication optical fiber connector 105 are all provided on the rear panel 106;

[0053] The power input socket 103 is used to transmit the mains power to the internal structure of the camera;

[0054] The synchronous trigger signal input connector 104 is used to introduce a synchronous trigger input pulse.

[0055] It is particularly noted that the operating voltage of the long pulse light source module 119 in this embodiment is a DC low voltage, has an external triggering working mode, and the light emission time is greater than the camera measurement time window time.

[0056] The specific working method of this embodiment is as follows:

[0057] First, when working, the city power with a specification of 220V is input from the power input socket 103 to the power conversion module 102, and the power conversion module 102 converts the city power into a DC low voltage, which is input to the controller module 122, and outputs at least four groups of working low voltages after being transformed and converted inside the controller module 122. Among them, one group of working low voltages is input to the power supply system module 108, and after being converted inside the power supply system module 108, the high voltage required for the scanning image converter 110 and the image intensifier 109 is generated; one group of working low voltages is input to the image recording module 107 to provide the working voltage of the image recording module 107; one group of working low voltages is input to the synchronous trigger module 111 to provide the working voltage of the synchronous trigger module 111; one group of working low voltages can be output to the long pulse light source module 119 through the low voltage connector 121 set on the front panel 112, and provide the DC low voltage required for the small long pulse light source module 119 to work.

[0058] At the same time, a synchronous trigger input pulse is input to the synchronous trigger module 111 through the synchronous trigger signal input connector 104 on the rear panel 106. After receiving the input signal, the synchronous trigger module 111 outputs at least two trigger signals. One of them is input to the power supply system module 108, which is used to trigger the power supply system module 108 to generate the scanning pulse voltage required for the camera to work. When this trigger signal is transmitted inside the synchronous trigger module 111, a numerical control delay is set on the internal link of the synchronous trigger module 111. The delay amount of this trigger signal relative to another trigger signal can be set through the software interface of the controller; the other is input to the long pulse ultraviolet light source gating through the synchronous trigger signal output connector 120 on the front panel 112, thereby providing the trigger signal required for the long pulse light source module 119 to work.

[0059] Next, the optical signal output by the long pulse light source module 119 is transmitted through the optical fiber 118 into the optical fiber connector at the front end of the input optical module 116, and then enters the collimation module 117 after passing through the optical fiber connector. After being expanded and converted into parallel light by the collimation module 117, the resolution plate 115 is irradiated. The optical signal carrying the image of the resolution plate 115 passes through the slit 114 and is imaged by the optical imaging lens 113 to the cathode of the scanning image converter 110. Here, by adjusting the relative delay of the two trigger signals output by the synchronous trigger module 111, the camera can achieve synchronous recording and measurement of the image of the resolution plate 115. The image of the resolution plate 115 measured by the camera can quickly obtain key information such as the spatial resolution and scanning linearity of the camera, thereby realizing a rapid judgment of the camera performance.

[0060] Finally, after completing the performance judgment of the camera, the front-end input optical module 116 and the resolution board 115 at the front end of the imaging lens can be quickly removed without affecting the actual working state of the camera.

[0061] Example 2

[0062] This embodiment provides a self-detection method for a streak camera with a self-detection function, based on the streak camera with a self-detection function described in the above embodiment, comprising the following steps:

[0063] The long pulse light source module 119 outputs a light signal;

[0064] The optical signal is input into the optical fiber connector through the optical fiber 118;

[0065] The optical fiber connector inputs the optical signal into the collimation module 117;

[0066] The collimation module 117 expands the optical signal and converts it into parallel light to irradiate the resolution plate 115;

[0067] The optical signal carrying the image of the resolution plate 115 passes through the slit 114 and is imaged onto the cathode of the scanning image converter tube 110 through the optical imaging lens 113;

[0068] The camera performance parameters are acquired through the image of the resolution board 115 to realize the judgment of the camera performance.

[0069] As a preferred solution of this embodiment, the camera performance parameters include spatial resolution and scanning linearity.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A streak camera with self-detection function, characterized in that: A camera lens and a self-test module are arranged at the front end of the camera housing (101) for acquiring images and obtaining performance parameters of the camera to judge the camera performance; The camera lens and self-checking module comprises a synchronous trigger signal output connector (120), an input optical module (116), a resolution board (115), an optical fiber connector, an optical fiber (118), a collimation module (117), a long pulse light source module (119) and an optical imaging lens (113); The synchronous trigger signal output connector (120) is used to output a trigger signal for the long pulse light source module (119); The optical imaging lens (113) is installed at the front end of the camera chassis (101); a slit (114) is provided at the center of the front end of the optical imaging lens (113); the front end of the slit (114) is closely attached to the detachable resolution board (115); the long pulse light source module (119) is provided above the middle section of the optical imaging lens (113); an input optical module (116) is installed at the front end of the optical imaging lens (113); the optical fiber connector is provided at the center of the front end of the input optical module (116); and the collimation module (117) is provided at the rear end of the optical fiber connector; an output interface of the long pulse light source module (119) is connected to the optical fiber connector via an optical fiber (118).

2. A streak camera with self-detection function according to claim 1, characterized in that: The front end of the camera case (101) is provided with a front panel (112), the bottom of the front panel (112) is a hollow structure, and the optical imaging lens (113) is installed at the front end of the hollow structure.

3. A streak camera with self-detection function according to claim 1, characterized in that: The optical imaging lens (113) is provided with a thread on its exterior, and the input optical module (116) is mounted on the front end of the optical imaging lens (113) via a threaded interface.

4. The streak camera with self-detection function according to claim 3, characterized in that: The long pulse light source module (119) is fixed to the outer cylinder of the optical imaging lens (113) via a threaded interface.

5. The streak camera with self-detection function according to claim 1, characterized in that: It also includes the interface module and the internal structure of the camera; The interface module is arranged at the rear end of the camera chassis (101); and the camera internal structure is installed inside the camera chassis (101).

6. A streak camera with self-detection function according to claim 5, characterized in that: The internal structure of the camera comprises a scanning image converter (110), an image intensifier (109), an image recording module (107), a power supply system module (108), a power conversion module (102), a synchronous trigger module (111) and a controller module (122); The scanning image converter (110) and the center line of the optical imaging lens (113) are collinear, and the image intensifier (109) and the image recording module (107) are sequentially arranged at the rear end of the scanning image converter (110); The power conversion module (102) is used to convert the mains electricity into direct current low voltage electricity and transmit it to the controller module (122); the controller module (122) performs voltage transformation and outputs multiple groups of working low voltages to the power supply system module (108), the synchronous trigger module (111) and the image recording module (107); the power supply system module (108) performs voltage transformation and supplies power to the scanning image converter (110) and the image intensifier (109) respectively.

7. The streak camera with self-detection function according to claim 6, characterized in that: The interface module comprises a power supply input socket (103), a synchronous trigger signal input connector (104) and a communication optical fiber connector (105); The rear end of the camera case (101) is provided with a rear panel (106), and the power input socket (103), the synchronous trigger signal input connector (104) and the communication optical fiber connector (105) are all arranged on the rear panel (106); The power input socket (103) is used to transmit the commercial power to the internal structure of the camera; The synchronous trigger signal input connector (104) is used to introduce a synchronous trigger input pulse.

8. A self-detection method for a streak camera with a self-detection function, based on the streak camera with a self-detection function as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: The long pulse light source module (119) outputs a light signal; The optical signal is input into the optical fiber connector through the optical fiber (118); The optical fiber connector inputs the optical signal into the collimation module (117); The collimation module (117) expands the optical signal and converts it into parallel light, and then irradiates the resolution plate (115); The optical signal carrying the image of the resolution plate (115) passes through the slit (114) and then is imaged onto the cathode of the scanning image converter tube (110) through the optical imaging lens (113); The camera performance parameters are obtained through the image of the resolution board (115) to realize the judgment of the camera performance.

9. The self-detection method of a streak camera with a self-detection function according to claim 8, characterized in that: The camera performance parameters include spatial resolution and scanning linearity.

Images