CN114234744A - Optical parameter testing device and optical parameter testing method for laser fuse detection front end - Google Patents
Optical parameter testing device and optical parameter testing method for laser fuse detection front end Download PDFInfo
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Abstract
The invention belongs to the technical field of photoelectric module testing, and particularly relates to an optical parameter testing device and an optical parameter testing method for a laser fuse detection front end, wherein the device comprises: the device comprises a parallel light source, a receiving detection device, an electric control displacement platform, an industrial personal computer and a power-on device; the transmitting end of the parallel light source corresponds to the input end of the device to be tested, so that the optical signal transmitted by the parallel light source is input into the device to be tested; the receiving detection device is arranged on the electric control displacement platform, and the input end of the receiving detection device corresponds to the output end of the product to be detected; the output end of the power-on device is respectively connected with the signal end and the power end of the device to be tested, and a power supply and a program-controlled signal are input to the device to be tested; the industrial personal computer is respectively connected with the power-on device, the receiving and detecting device and the electric control displacement platform and is used for controlling the devices to work; the optical parameter testing device designed by the invention can be suitable for testing the front end of the laser fuse.
Description
Technical Field
The invention belongs to the technical field of photoelectric module testing, and particularly relates to an optical parameter testing device and an optical parameter testing method for a laser fuse detection front end.
Background
For the detection front end of the laser fuse, the emission light beam energy distribution, the receiving optical response distribution and the receiving and transmitting optical inclination angle matching are important performance indexes of the laser fuse, and the performance indexes also comprise a plurality of optical parameters. In the situation of mass production, the optical parameters of the laser fuse detection front end need to be tested in mass. The current common test method is manual test, but the manual test flow is complex and the efficiency is low. Therefore, a device is needed to automatically realize the above-mentioned optical parameter testing.
The laser fuze detection front end comprises a laser transmitter and a laser receiver, so that the laser fuze detection front end needs to be respectively tested by adopting a laser emission testing device and a laser receiving testing device. Particularly, for some laser fuze detection front ends integrating receiving and transmitting, a currently common method is to test a laser transmitter and a laser receiver respectively; but the test respectively needs to be carried out a lot of clamping to the module under test, has consumed a large amount of time, and can produce the scratch mar to product appearance in a lot of clamping processes. Therefore, a device is needed, which can integrate the laser emission testing device and the laser receiving testing device and realize automatic testing in multi-parameter one-time clamping.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention provides an optical parameter testing device for a laser fuse detection front end, which comprises: the device comprises a parallel light source, a receiving detection device, an electric control displacement platform, an industrial personal computer and a power-on device; the transmitting end of the parallel light source corresponds to the input end of the device to be tested, so that the optical signal transmitted by the parallel light source is input into the device to be tested; the receiving detection device is arranged on the electric control displacement platform, and the input end of the receiving detection device corresponds to the output end of the product to be detected; the output end of the power-on device is respectively connected with the signal end and the power end of the device to be tested, and a power supply and a program-controlled signal are input to the device to be tested; the industrial personal computer is respectively connected with the power-on device, the receiving and detecting device and the electric control displacement platform and is used for controlling the devices to work.
Preferably, the collimated light source is an autocollimator.
Preferably, the receiving and detecting device is a linear array detector.
Preferably, the electric control displacement platform comprises a linear translation platform and a bearing module displacement platform; the linear translation stage is used for arranging a receiving detection device; the bearing module displacement table is used for fixing the device to be tested.
Furthermore, the bearing module displacement table is a three-axis electronic control rotary tilting table, and the three-axis electronic control rotary tilting table is used for testing the yaw angle, the pitch angle and the roll angle of the device to be tested.
Preferably, the power-on device comprises a direct current power supply, a signal source and an oscilloscope; the direct current power supply is used for applying direct current voltage to the device to be tested so that the device to be tested can work normally; the signal source is used for applying a program control signal to a device to be tested; the oscilloscope is used for testing the waveform of an output signal of the device to be tested.
A method for testing optical parameters of a laser fuse detection front end comprises the following steps: and carrying out laser emission parameter test on the laser fuse detection front end and receiving parameter test on the laser fuse detection front end by adopting an optical parameter test device of the laser fuse detection front end.
Preferably, the process of testing the laser emission parameters of the laser fuse detection front end by using the optical parameter testing device comprises: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output light spot of the device to be detected at the current yaw angle position by adopting a receiving detection device; integrating the output light spots into an angle-intensity image in an industrial personal computer, and taking the image as a light spot image 1; moving the receiving detection device to increase the distance d between the receiving detection device and the device to be detected, repeating the light spot detection process to obtain a second angle-intensity image, and taking the image as a light spot image 2; and calculating a field angle of the emission beam, a field angle of the emission beam and a field inclination angle of the emission beam according to the light spot image 1 and the light spot image 2.
Further, the process of calculating the angle of view of the emitted beam includes:
step 1: accumulating the pixel gray values of each row of the light spot image 2 respectively, and taking each accumulated result as the light intensity of the corresponding yaw angle direction of the row;
step 2: superposing each row of pixels to obtain a light intensity distribution curve of the laser beam in the yaw direction;
and step 3: calculating the half-width of the light intensity distribution curve, which is the viewing angle theta of the emitted light beam1。
Further, the process of calculating the emission beam field angle and the emission beam field inclination angle includes:
step 1: accumulating the gray value of each row of pixels in the light spot image 1, and taking the accumulated result as the light intensity in the pitch angle direction corresponding to the row;
step 2: accumulating the pixels of each row to obtain a light intensity distribution curve 1 of the laser beam in the pitching direction, and calculating the full width at half maximum d of the curve1(ii) a Calculating the average value of two half high points of the curve to obtain the center A of the light beam view field;
and step 3: repeating the steps 1 to 2 on the spot image 2 to obtain a light intensity distribution curve 2 and a half-height width d of the laser beam in the pitching direction2And a beam field center B;
and 4, step 4: according to half-height width d1And half-width d2Calculating the angle of view of the emitted beam by the formula theta2＝2*arctan((d2-d1)/(2*d))；
And 5: calculating the inclination angle of the emitted beam visual field according to the beam visual field center A and the beam visual field center B, wherein the calculation formula is as follows: theta3Arctan ((B-a)/d); wherein d represents the full width at half maximum d1And half-width d1Average value of (a).
Preferably, the laser receiving parameter testing process of the laser fuse detection front end by using the optical parameter testing device comprises the following steps: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; irradiating the receiving part of the device to be tested by a parallel light source; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output signal amplitude of the device to be tested at the current yaw angle position by adopting a power-on device; integrating the amplitude of the output signal into an angle-response image on an industrial personal computer, and taking the image as a response distribution image; and calculating a receiving view field angle, a receiving view field angle and a receiving view field inclination angle according to the response distribution image.
Further, the process of calculating the receiving field angle includes: acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; calculating the half-height width of the curve, and measuring the angle of view omega of the emitted light beam2；
The process of calculating the reception view angle includes: acquiring a row of pixel gray values corresponding to a pitch angle position defined by a receiving field angle of a device to be detected, constructing a yaw direction response distribution curve at the position according to the acquired pixel gray values, calculating the full width at half maximum of the curve, and measuring a field angle omega of a transmitted light beam1；
The process of calculating the receive field tilt angle includes: acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; the two half high points of the curve are averaged to obtain a receiving view field center C, and the pitch angle corresponding to the C point is a receiving view field inclination angle omega3。
The invention has the advantages that:
the optical parameter testing device designed by the invention can be suitable for testing the front end of the laser fuse; the device to be tested and the receiving and detecting device are arranged on the electric control displacement platform, and the angle between the device to be tested and the receiving and detecting device is adjusted through the electric control displacement platform, so that the device can test the receiving part and the transmitting part of the laser fuse detection front end at one time, and repeated clamping is avoided.
Drawings
FIG. 1 is a schematic block diagram of an optical parameter testing apparatus of the present invention;
FIG. 2 is a schematic view of the optical parameter testing apparatus of the present invention for measuring the viewing angle;
FIG. 3 is a schematic view of the optical parameter testing device of the present invention for measuring pitch angle;
FIG. 4 is a schematic view of an optical parameter measuring apparatus for measuring a yaw angle according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An optical parameter testing device for a laser fuse detection front end is shown in figure 1, and comprises a parallel light source, a receiving detection device, an electric control displacement platform, an industrial personal computer and a power-on device; the parallel light source is used for transmitting a parallel light signal to a device to be tested; the receiving and detecting device is used for receiving signals output by the device to be detected; the electric control displacement platform is used for bearing a device to be detected and a receiving and detecting device and controlling the position of the receiving and detecting device; the industrial personal computer is used for controlling other devices of the optical parameter testing device; the power-up device is used for inputting a signal source and measuring signal waves to the device to be measured.
An embodiment of an optical parameter testing device for a laser fuse probing front end comprises: the device comprises a parallel light source, a receiving detection device, an electric control displacement platform, an industrial personal computer and a power-on device; the transmitting end of the parallel light source corresponds to the input end of the device to be tested, so that the optical signal transmitted by the parallel light source is input into the device to be tested; the receiving detection device is arranged on the electric control displacement platform, and the input end of the receiving detection device corresponds to the output end of the product to be detected; the output end of the power-on device is respectively connected with the signal end and the power end of the device to be tested, and a power supply and a program-controlled signal are input to the device to be tested; the industrial personal computer is respectively connected with the power-on device, the receiving and detecting device and the electric control displacement platform and is used for controlling the devices to work.
Optionally, the parallel light source of the optical parameter testing device designed by the invention can adopt a collimator or a beam expanding collimated laser beam, so as to reduce the cost of the testing device.
Preferably, the parallel light source of the optical parameter testing device is an autocollimator, the autocollimator is detachably mounted on the lifting platform, and the distance between the autocollimator and the device to be tested can be adjusted through the lifting platform, so that the device to be tested can be tested by adopting optical signals with different intensities, and a more accurate test result is obtained.
Preferably, in the process of testing the device to be tested, the light outlet of the autocollimator is adjusted to be equal to the height of the window of the tested module receiver by adjusting the lifting platform, and the emitted light beams of the autocollimator can completely cover the window of the tested module receiver. The tested module receiver is a device to be tested.
The emergent parallel light of the autocollimator detects an echo of a light beam emitted at the front end at a far distance through a simulated laser fuse and is received by a tested module receiver; and then, by controlling the electric control displacement table, the responses of the receiver of the tested module at different pitch angles, yaw angles and roll angles are obtained, and finally, all the received optical parameters of the tested module are obtained. Before the test, all parts of the test device are leveled, so that the included angle between the devices is reduced, and the error of the test system is reduced.
The receiving detection device is a linear array detector; the linear array detector is arranged on a linear platform of the electric control displacement platform. Before testing the device to be tested, the linear array detector is adjusted to be as high as the window of the transmitter of the module to be tested, so that the linear array detector can completely receive signals transmitted by the transmitter of the module to be tested.
In the technical scheme, the linear array detector is matched with a displacement table for bearing the module, and when the module to be measured rotates along the yaw direction, the linear array detector scans the light beam emitted by the transmitter of the module to be measured to obtain the light beam energy distribution of the transmitter under a polar coordinate system; the linear translation stage moves to perform secondary scanning at different distances, and each emission optical parameter of the module to be tested can be obtained through the difference of the results of the two scans.
Alternatively, the receiving and detecting device can adopt an area array detector with a large target surface. When the area array detector tests the laser emission beam with small divergence angle, the area array detector can directly obtain the energy distribution of light spots without scanning, thereby improving the testing efficiency.
Alternatively, the receiving and detecting device may adopt a diffuse reflection target surface and use a camera for imaging. The method can be used for adjusting the laser transmitter and extending the use function of the platform.
Alternatively, the receiving and detecting device may employ a photodiode, which may more accurately represent the time-domain waveform of the laser transmitter relative to the integrating device.
The electric control displacement platform comprises a linear translation platform, a bearing module displacement platform and a controller for controlling the displacement platform; the linear translation stage is used for arranging a receiving detection device; the bearing module displacement platform is used for arranging a device to be tested; the controller plays a role in driving the electric control displacement table stepping motor and communicating with the industrial personal computer, the current angle can be accurately read in the rotation process of the displacement table, and the test precision is improved.
Preferably, the displacement table for bearing the tested module is a three-axis electric control rotary tilting table, and the rotation of the tested module in yaw, pitch and roll directions can be realized.
In the above technical solution, particularly, when the transceiver integrated laser fuse is tested, the transceiver integrated laser fuse moves along the pitch and yaw directions of the receiver, the pitch and yaw directions of the receiver are separately scanned, a response curve is drawn, and the field angle and the view angle of the receiver are calculated through the response curve.
In the test of the tested module receiver, the response of the receiver in multiple directions and in a full view field can be obtained, and a response distribution diagram of the full view field is drawn on the industrial personal computer through the reading of the oscilloscope. Optical design and assembly mechanical design in module design can be facilitated.
The power-on device comprises a program-controlled direct-current power supply, a program-controlled signal source and an oscilloscope. The program-controlled DC power supply and the program-controlled signal source can be controlled by the industrial personal computer to control power-on parameters and power-on time.
In the technical scheme, the oscilloscope receives the output signal of the tested module, displays the output signal on the oscilloscope in real time, and transmits the parameters such as the signal amplitude to be tested to the industrial personal computer through communication. The industrial personal computer receives the signal and then combines the positioning angle of the electric control displacement platform to obtain the response of the tested module receiver at the angle.
In the above technical solution, particularly, when testing the transceiver integrated laser fuse, the separate tests on the receiver and the transmitter cannot power up the receiver and the transmitter simultaneously. Therefore, after the laser receiver is tested, the power of the receiver is cut off under the control of the industrial personal computer, the transmitter is powered on, the tested module faces the receiving testing device through the electric control displacement table, the transmitter is tested, and automatic connection between the two tests is completed.
Optionally, the oscilloscope can be replaced by a source meter, the source meter can also communicate with an industrial personal computer, and when a current output device is tested, a higher-precision reading can be obtained by using the source meter.
The control machine is connected with the electric control displacement platform controller, the direct current power supply, the signal source, the oscilloscope and the linear array detector. The industrial computer realizes the automatic test of the tested module by controlling the devices to work in coordination.
In the technical scheme, the industrial personal computer is connected with the direct-current power supply, the signal source and the electric control displacement platform controller through the RS-232 interface; the linear array detector is connected through a gigE Vision interface or a CameraLink interface; and the oscilloscope is connected through the Ethernet interface.
A method for testing optical parameters of a laser fuse detection front end comprises the following steps: and carrying out laser emission parameter test on the laser fuse detection front end and receiving parameter test on the laser fuse detection front end by adopting an optical parameter test device of the laser fuse detection front end.
The laser emission parameter testing process of the laser fuse detection front end by adopting the optical parameter testing device comprises the following steps: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output light spot of the device to be detected at the current yaw angle position by adopting a receiving detection device; integrating the output light spots into an angle-intensity image in an industrial personal computer, and taking the image as a light spot image 1; moving the receiving detection device to increase the distance d between the receiving detection device and the device to be detected, repeating the light spot detection process to obtain a second angle-intensity image, and taking the image as a light spot image 2; and calculating a field angle of the emission beam, a field angle of the emission beam and a field inclination angle of the emission beam according to the light spot image 1 and the light spot image 2.
As shown in fig. 2, the process of calculating the angle of view of the emitted beam includes:
step 1: accumulating the pixel gray values of each row of the light spot image 2 respectively, and taking each accumulated result as the light intensity of the corresponding yaw angle direction of the row;
step 2: accumulating the pixels of each row to obtain a light intensity distribution curve of the laser beam in the yaw direction;
and step 3: calculating the half-width of the light intensity distribution curve, which is the viewing angle theta of the emitted light beam1。
As shown in fig. 3, the process of calculating the angle of view of the emission beam includes:
step 1: accumulating the gray values of pixels in a row in the light spot image 1, and taking the accumulated result as the light intensity in the pitch angle direction corresponding to the row;
step 2: accumulating the pixels of each row to obtain a light intensity distribution curve 1 of the laser beam in the pitching direction, and calculating the full width at half maximum d of the curve1；
And step 3: repeating the steps 1 to 2 on the spot image 2 to obtain a light intensity distribution curve 2 and a half-height width d of the laser beam in the pitching direction2；
And 4, step 4: according to half-height width d1And half-width d2Calculating the angle of view of the emitted beam by the formula theta2＝2*arctan((d2-d1) V (2 x d)); wherein d represents the full width at half maximum d1And half-width d1Average value of (a).
As shown in fig. 4, the method for calculating the inclination angle of the field of view of the emission beam includes:
step 1: accumulating all pixel gray values of one row of the light spot image 1, and taking an accumulated result as light intensity in a pitch angle direction corresponding to the row;
step 2: accumulating pixels of each row respectively to obtain a light intensity distribution curve 1 of the laser beam in the pitching direction, and calculating the average value of two half high points of the curve to obtain a light beam view field center A;
and step 3: selecting a light spot image 2, and repeating the steps 1-2 to obtain a light intensity distribution curve 2 of the laser beam in the pitching direction and a light beam view field center B;
and 4, step 4: calculating to obtain a field inclination angle of the emitted beam according to the center A and the center B of the beam field, wherein the calculation formula is theta3＝arctan((B-A)/d)。
The laser receiving parameter testing process of the laser fuse detection front end by adopting the optical parameter testing device comprises the following steps: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; irradiating the receiving part of the device to be tested by a parallel light source; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output signal amplitude of the device to be tested at the current yaw angle position by adopting a power-on device; integrating the amplitude of the output signal into an angle-response image on an industrial personal computer, and taking the image as a response distribution image; and calculating a receiving view field angle, a receiving view field angle and a receiving view field inclination angle according to the response distribution image.
The process of calculating the receiving field angle includes: acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; calculating the half-height width of the curve, and measuring the angle of view omega of the emitted light beam2。
The process of calculating the reception view angle includes: acquiring a row of pixel gray values corresponding to a pitch angle position defined by a receiving field angle of a device to be detected, constructing a yaw direction response distribution curve at the position according to the acquired pixel gray values, calculating the full width at half maximum of the curve, and measuring a field angle omega of a transmitted light beam1。
Calculating receive field tiltThe process of the angle includes: acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; the two half high points of the curve are averaged to obtain a receiving view field center C, and the pitch angle corresponding to the C point is a receiving view field inclination angle omega3。
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "outer", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "rotated," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The above-mentioned embodiments, which further illustrate the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An optical parameter testing device for a laser fuse probe front end, the device comprising: the device comprises a parallel light source, a receiving detection device, an electric control displacement platform, an industrial personal computer and a power-on device; the transmitting end of the parallel light source corresponds to the input end of the device to be tested, so that the optical signal transmitted by the parallel light source is input into the device to be tested; the receiving detection device is arranged on the electric control displacement platform, and the input end of the receiving detection device corresponds to the output end of the product to be detected; the output end of the power-on device is respectively connected with the signal end and the power end of the device to be tested, and a power supply and a program-controlled signal are input to the device to be tested; the industrial personal computer is respectively connected with the power-on device, the receiving and detecting device and the electric control displacement platform and is used for controlling the devices to work.
2. The optical parameter testing device for the detection front end of the laser fuse as claimed in claim 1, wherein the electrically controlled displacement platform comprises a linear translation stage, a carrying module displacement stage and a controller; the linear translation stage is used for arranging a receiving detection device; the bearing module displacement table is used for fixing a device to be tested; the controller is used for controlling the linear translation stage and the bearing module displacement stage to move.
3. The apparatus according to claim 2, wherein the displacement table of the carrier module is a three-axis electrically-controlled rotary tilting table, and the three-axis electrically-controlled rotary tilting table is used for testing a yaw angle, a pitch angle and a roll angle of the device under test.
4. The optical parameter testing device of the laser fuse detection front end according to claim 1, wherein the power-on device comprises a direct current power supply, a signal source and an oscilloscope; the direct current power supply is used for applying direct current voltage to the device to be tested so that the device to be tested can work normally; the signal source is used for applying a program control signal to a device to be tested; the oscilloscope is used for testing the waveform of an output signal of the device to be tested.
5. A method for testing optical parameters of a laser fuse detection front end is characterized by comprising the following steps: the optical parameter testing device based on any one of claims 1 to 4 is adopted to perform laser emission parameter testing of the laser fuse detection front end and receiving parameter testing of the laser fuse detection front end.
6. The method for testing the optical parameters of the laser fuse detection front end according to claim 5, wherein the process of testing the laser emission parameters of the laser fuse detection front end by using the optical parameter testing device comprises: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output light spot of the device to be detected at the current yaw angle position by adopting a receiving detection device; integrating the output light spots into an angle-intensity image in an industrial personal computer, and taking the image as a light spot image 1; moving the receiving detection device to increase the distance d between the receiving detection device and the device to be detected, repeating the light spot detection process to obtain a second angle-intensity image, and taking the image as a light spot image 2; and calculating a field angle of the emission beam, a field angle of the emission beam and a field inclination angle of the emission beam according to the light spot image 1 and the light spot image 2.
7. The method as claimed in claim 6, wherein the step of calculating the viewing angle of the emitted beam comprises:
step 1: accumulating the pixel gray values of each row of the light spot image 2 respectively, and taking each accumulated result as the light intensity of the corresponding yaw angle direction of the row;
step 2: accumulating the pixels of each row to obtain a light intensity distribution curve of the laser beam in the yaw direction;
and step 3: calculating the half-width of the light intensity distribution curve, which is the viewing angle theta of the emitted light beam1。
8. The method as claimed in claim 6, wherein the process of calculating the angle of view of the emission beam and the inclination of the field of view of the emission beam comprises:
step 1: accumulating the gray value of each row of pixels in the light spot image 1, and taking the accumulated result as the light intensity in the pitch angle direction corresponding to the row;
step 2: accumulating the pixels of each row to obtain a light intensity distribution curve 1 of the laser beam in the pitching direction, and calculating the full width at half maximum d of the curve1(ii) a Calculating the average value of two half high points of the curve to obtain the center A of the light beam view field;
and step 3: repeating the steps 1 to 2 on the spot image 2 to obtain a light intensity distribution curve 2 and a half-height width d of the laser beam in the pitching direction2And a beam field center B;
and 4, step 4: according to half-height width d1And half-width d2Calculating the angle of view of the emitted beam by the formula theta2＝2*arctan((d2-d1)/(2*d))；
And 5: calculating the inclination angle of the emitted beam visual field according to the beam visual field center A and the beam visual field center B, wherein the calculation formula is as follows: theta3Arctan ((B-a)/d); wherein d represents the full width at half maximum d1And half-width d1Average value of (a).
9. The method for testing the optical parameters of the laser fuse detection front end according to claim 5, wherein the process of testing the laser receiving parameters of the laser fuse detection front end by using the optical parameter testing device comprises: placing a device to be tested on an electric control displacement platform of an optical parameter testing device; irradiating the receiving part of the device to be tested by a parallel light source; acquiring a yaw angle position of a current device to be tested through an electric control displacement platform; acquiring an output signal amplitude of the device to be tested at the current yaw angle position by adopting a power-on device; integrating the amplitude of the output signal into an angle-response image on an industrial personal computer, and taking the image as a response distribution image; and calculating a receiving view field angle, a receiving view field angle and a receiving view field inclination angle according to the response distribution image.
10. The method of claim 9, wherein the step of calculating the receiving field angle comprises:
acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; calculating the half-height width of the curve, and measuring the angle of view omega of the emitted light beam2；
The process of calculating the reception view angle includes: acquiring a row of pixel gray values corresponding to a pitch angle position defined by a receiving field angle of a device to be detected, constructing a yaw direction response distribution curve at the position according to the acquired pixel gray values, calculating the full width at half maximum of the curve, and measuring a field angle omega of a transmitted light beam1；
The process of calculating the receive field tilt angle includes: acquiring a row of pixel gray values corresponding to a yaw angle position defined by a receiving field angle of a device to be tested, and constructing a pitch direction response distribution curve at the position according to the acquired pixel gray values; the two half high points of the curve are averaged to obtain a receiving view field center C, and the pitch angle corresponding to the C point is a receiving view field inclination angle omega3。
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