Optical filter detection assembly and tool

Abstract

According to the optical filter detection assembly and tool, detection light in a specific wavelength interval is ingeniously output to an optical filter to be detected through a light source, a signal receiving unit is used for collecting optical signals penetrating through the optical filter to be detected, and after data transmission and analysis of a signal amplification unit, a main control unit and an upper computer are combined, the optical signals are sent to the optical filter to be detected. After the wavelength condition of the optical signal collected by the signal receiving unit is compared with the wavelength condition (reference information) of the optical signal output by the detection light, whether the performance of the optical filter to be detected is abnormal or not can be simply and conveniently judged; according to the scheme, the optical filter detection assembly is simple and compact in structure, can be arranged in the shells (the first shell and the second shell) in multiple groups to form a detection tool so as to realize batch detection and use of optical filters in processing sites such as small workshops and laboratories, is low in cost, convenient to operate and reliable in embodiment, and has positive application and popularization values.

Description

Technical Field

[0001] The utility model relates to the field of optical filter detection devices, in particular to an optical filter detection component and a tooling. Background Art

[0002] In the field of optics, filters are a key optical component that is widely used in photography, videography, optical instruments, biomedicine, semiconductor manufacturing, scientific research and other fields. The stability and accuracy of their performance are directly related to the image quality, spectral analysis accuracy and the overall efficiency of the optical system. Therefore, in industrialization, it is particularly important to conduct efficient and accurate performance testing of filters.

[0003] Traditional filter detection methods mostly rely on manual visual inspection or the use of simple light intensity measurement tools. These methods have defects such as strong subjectivity, low detection efficiency, and insufficient precision. They are difficult to meet the requirements of modern optical systems for filter quality control and batch detection. In recent years, with the continuous development of optical detection technology, automated and digital detection methods have gradually received attention. Among them, the use of purely mechanical automation methods for detection requires a lot of costs and the purchase of many supporting facilities. Most of the filter detection devices on the market are complex in structure and cumbersome to operate. In addition, although some high-end detection equipment has superior performance, it is expensive and difficult to popularize to small and medium-sized enterprises or laboratories and other application scenarios.

[0004] Therefore, how to provide a filter detection component that has a simple structure, low cost, can be used for batch detection, and is suitable for manual operation or mechanical assisted operation is a research topic with very positive and practical significance. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a filter detection assembly and tooling with simple structure, flexible application and reliable implementation.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the utility model is:

[0007] A filter detection assembly, comprising:

[0008] A light source, used for outputting detection light;

[0009] A light source driving unit, electrically connected to the light source and used to drive the light source to turn on and off;

[0010] A signal receiving unit is arranged on the optical path of the detection light output by the light source, and an accommodating area for placing the filter to be detected is formed between the light source and the signal receiving unit. After the detection light output by the light source is incident on the filter to be detected, an optical signal in the detection light with a wavelength adapted to the working wavelength of the filter to be detected passes through the filter to be detected and is received by the signal receiving unit, and the signal receiving unit performs photoelectric conversion on the received optical signal;

[0011] A signal amplifying unit connected to the signal receiving unit and used to amplify the signal after the photoelectric conversion by the signal receiving unit;

[0012] A main control unit connected to the signal amplifying unit and the light source driving unit, and used to receive the signal amplified by the signal amplifying unit, and control the light source driving unit to drive the light source to output detection light, and the main control unit is also connected to a power supply that provides electrical energy;

[0013] The main control unit is also connected to the host computer through the communication unit, and sends the signal amplified by the signal amplification unit to the host computer, which compares the signal with the reference signal to determine whether the performance of the filter to be tested is abnormal.

[0014] As a possible implementation manner, further, the light source described in this solution is an LED light-emitting tube unit.

[0015] As a possible implementation mode, further, the signal receiving unit described in this scheme includes a PIN tube and a PIN tube driving unit. The PIN tube is connected to the signal amplifying unit, and is used to receive the light signal passing through the filter to be tested, and perform photoelectric conversion on the received light signal; the PIN tube driving unit is respectively connected to the main control unit and the PIN tube, and is used to drive the PIN tube to work.

[0016] As a possible implementation, further, the power supply described in this solution is a built-in power supply or an external power supply.

[0017] Based on the above, the present solution also provides a filter detection tool, which includes the filter detection component described above; it also includes:

[0018] The first housing is a box-shaped housing structure, and a first installation cavity is provided inside the first housing. The signal receiving unit, the signal amplifying unit, the communication unit and the main control unit of the filter detection assembly are all arranged in the first installation cavity. A first sinking groove is formed on the upper end surface of the first housing, and a first window is provided in the first sinking groove. The signal receiving end of the signal receiving unit is directly opposite to the first window.

[0019] The second shell is a box-shaped shell structure, which is arranged above the first shell. A second installation cavity is arranged inside the second shell. The light source of the filter detection assembly and the light source driving unit are both arranged in the second installation cavity. A second sink is formed on the lower end surface of the second shell. The second sink is provided with a second window facing the first window. The light emitting end of the light source faces the second window. One side of the second shell is rotatably connected to one side of the first shell through a rotating connection. The second shell and the first shell have a first state and a second state that cooperate with each other. In the first state, the lower end surface of the second shell covers the upper end surface of the first shell, and a closed cavity is formed between the first sink and the second sink, which is set as an accommodating area. In the second state, the second shell flips around the rotating connection to form an angle between the second shell and the first shell, and the accommodating area is at least partially open.

[0020] Wherein, when the power supply is a built-in power supply, it is arranged in the first installation cavity. When it is an external power supply, a power supply interface for connecting to the power supply is provided on one side of the first shell, and the power supply interface is electrically connected to the main control unit.

[0021] As a preferred implementation option, preferably, the filter detection component described in this scheme also includes a first circuit board and a second circuit board, and the signal receiving unit, signal amplification unit, communication unit and main control unit of the filter detection component are integrated on the first circuit board, and the light source of the filter detection component and the light source driving unit are integrated on the second circuit board.

[0022] As a preferred implementation option, preferably, the filter detection assembly described in this scheme also includes a connecting cable, one end of which is connected to the first circuit board, and the other end of the connecting cable is connected to the second circuit board, so that the main control unit is connected to the light source driving unit; and the sides on which the first shell and the second shell are rotatably connected to each other are respectively provided with wiring grooves corresponding to the connecting cable for its passage.

[0023] As a preferred implementation option, preferably, the rotating connecting member described in this solution is a hinge.

[0024] As a preferred implementation option, preferably, the main control unit described in this scheme is connected to the host computer by wired communication or wireless communication through the communication unit. When it is a wired communication connection, a data interface is provided on one side of the first shell, and the data interface is connected to the main control unit, and it is also used for wired communication connection with the host computer.

[0025] As a preferred implementation option, preferably, the filter detection components described in this scheme are multiple groups; a plurality of first windows are provided on the first groove of the first shell, and a plurality of second windows corresponding to the first windows are provided on the second groove of the second shell.

[0026] By adopting the above technical scheme, compared with the prior art, the utility model has the following beneficial effects: the scheme cleverly outputs detection light of a specific wavelength range to the filter to be tested through a light source, and uses a signal receiving unit to collect the optical signal transmitted through the filter to be tested, and then after combining the data transmission and analysis of the signal amplification unit, the main control unit and the host computer, the wavelength of the optical signal collected by the signal receiving unit can be compared with the wavelength of the optical signal output by the detection light (reference information), so as to simply and conveniently judge whether the performance of the filter to be tested is abnormal; the filter detection component of the scheme has a simple and compact structure, which is suitable for manual operation or assisted operation by external automation equipment. It can be deployed in multiple groups and packaged in a shell (first shell, second shell) to form a detection tooling, so as to realize batch detection of filters in small workshops, laboratories and other processing sites. It is not only low in cost but also convenient to operate and reliable in implementation, and has positive application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is one of the simple unit module connection diagrams of the detection component of this scheme;

[0029] Figure 2 It is a brief schematic diagram of the connection between the main control unit and the signal receiving unit of the detection component of this solution;

[0030] Figure 3 is a schematic cross-sectional diagram of a simplified implementation structure of the detection tooling of the present solution, wherein it shows a schematic diagram of the structure when the first housing and the second housing are in a second mating state;

[0031] Figure 4 is a schematic cross-sectional diagram of a simplified implementation structure of the detection tooling of the present invention, wherein it shows a schematic diagram of the structure when the first housing and the second housing are in a first mating state, wherein a filter to be detected is also placed on the first opening;

[0032] Figure 5 This is a brief illustration of the use of multiple sets of testing components as batch testing tools in the testing tooling of this scheme;

[0033] Figure 6 This is a brief schematic diagram of the principle of the first example of this scheme;

[0034] Figure 7 This is a brief implementation circuit diagram of one of the chips SU1 in the main control unit in the first example of this solution;

[0035] Figure 8 This is a brief implementation circuit diagram of another chip SU2 of the main control unit in the example of the first solution;

[0036] Fig. 9 This is a brief implementation circuit diagram of the light source driving unit and the light source in the example of the first scheme;

[0037] Fig.10 This is a brief circuit diagram of the signal receiving unit and signal amplification in the example of the first scheme;

[0038] Fig.11 This is a brief implementation circuit diagram of the DA unit in the example of this scheme 1;

[0039] Fig.12 This is a brief implementation circuit diagram of the serial communication unit in the example of this scheme;

[0040] Fig.13 This is a brief implementation circuit diagram of the power supply stabilization unit in the example of this scheme. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1 As shown, in this embodiment, a filter detection component 100 includes:

[0043] A light source 101, used for outputting detection light;

[0044] A light source driving unit 102 is electrically connected to the light source 101 and is used to drive the light source 101 to turn on and off;

[0045] The signal receiving unit 103 is arranged on the optical path of the detection light output by the light source. An accommodating area 108 for placing the optical filter 300 to be detected is formed between the light source 101 and the signal receiving unit 103. After the detection light output by the light source 101 is incident on the optical filter 300 to be detected, the optical signal in the detection light with a wavelength adapted to the working wavelength of the optical filter 300 to be detected passes through the optical filter 300 to be detected and is received by the signal receiving unit 103. The signal receiving unit 103 performs photoelectric conversion on the received optical signal.

[0046] A signal amplifying unit 104, connected to the signal receiving unit 103, and used to amplify the signal after the photoelectric conversion performed by the signal receiving unit 103;

[0047] A main control unit 105, connected to the signal amplifying unit 104 and the light source driving unit 102, and used to receive the signal amplified by the signal amplifying unit 104, and control the light source driving unit 102 to drive the light source 101 to output detection light. The main control unit 105 is also connected to a power supply 106 for providing electric energy;

[0048] The main control unit 105 is also connected to the host computer 200 through the communication unit 107, and sends the signal amplified by the signal amplification unit 104 to the host computer 200, which compares the signal with the reference signal to determine whether the performance of the filter 300 to be tested is abnormal.

[0049] In this solution, the host computer may be an external desktop computer or a portable notebook computer, or a tablet computer or other device.

[0050] In addition, as a possible implementation, further, the light source 101 in this solution is an LED light-emitting tube unit; Figure 2 As shown, the signal receiving unit 103 of the present embodiment includes a PIN tube 1031 and a PIN tube driving unit 1032. The PIN tube 1031 is connected to the signal amplifying unit 104, and is used to receive the optical signal transmitted through the filter 300 to be tested, and perform photoelectric conversion on the received optical signal; the PIN tube driving unit 1032 is respectively connected to the main control unit 105 and the PIN tube 1031, and is used to drive the PIN tube 1031 to work.

[0051] In terms of power supply, as a possible implementation, further, the power supply 106 described in this solution can be a built-in power supply or an external power supply.

[0052] exist Figure 1 , Figure 2 Based on the shown Figures 3 to 5As shown in one, based on the above, this embodiment also provides a filter detection tool 400, which includes the filter detection component 100 described above; it also includes:

[0053] The first housing 401 is a box-shaped housing structure, and a first installation cavity 4011 is provided inside the first housing. The signal receiving unit 103, the signal amplifying unit 104, the communication unit 107 and the main control unit 105 of the optical filter detection assembly 100 are all arranged in the first installation cavity 4011. A first sinking groove 4014 is formed on the upper end surface of the first housing 401. The first sinking groove 4014 is provided with a first window 4012. The signal receiving end of the signal receiving unit 103 is directly opposite to the first window 4012, so that the optical signal passing through the first window 4012 can be incident on the signal receiving end of the signal receiving unit 103;

[0054] The second shell 402 is a box-shaped shell structure, which is arranged above the first shell 401. A second installation cavity 4021 is arranged inside the second shell 402. The light source 101 of the filter detection component 100 and the light source driving unit 102 are both arranged in the second installation cavity 4021. A second sink 4024 is formed on the lower end surface of the second shell 402. The second sink 4024 is provided with a second window 4022 opposite to the first window 4012. The light emitting end of the light source 101 is opposite to the second window 4022 or penetrates the second window 4022. One side of the second shell 402 is rotatably connected to one side of the first shell 401 through a rotating connector 403; there is a second housing 402 and a second housing 401 between the second shell 402 and the first shell 401. There are a first state and a second state that cooperate with each other. In the first state, the lower end surface of the second shell 402 covers the upper end surface of the first shell 401, and a closed cavity is formed between the first sink groove 4014 and the second sink groove 4024, which is set as the accommodating area 108. In the second state, the second shell 402 is flipped around the rotating connecting piece 403 to form an angle between the second shell 402 and the first shell 401, and the accommodating area 108 is at least partially open; that is, when the second shell 402 is flipped, the accommodating area 108 can be opened, so as to facilitate the operator to put the filter 300 to be tested into the first window 4012 of the first sink groove 4014, and when covering, a closed cavity is formed between the first shell 401 and the second shell 402, which can avoid interference of external light on the detection.

[0055] In this solution, when the power supply 106 is a built-in power supply, it is arranged in the first installation cavity 4011. When it is an external power supply, one side of the first shell 4011 can be provided with a power supply interface for connecting to the power supply. The power supply interface is electrically connected to the main control unit 105 to achieve external power supply access, wherein the power supply interface is a common electronic product setting structure and will not be described in detail here.

[0056] In order to facilitate assembly and improve the degree of integration of the filter detection component 100, as a preferred implementation option, preferably, the filter detection component 100 described in this scheme also includes a first circuit board 120 and a second circuit board 110, and the signal receiving unit 103, signal amplification unit 104, communication unit 107 and main control unit 105 of the filter detection component 100 are all integrated on the first circuit board 120, and the light source 101 and the light source driving unit 102 of the filter detection component 100 are both integrated on the second circuit board 110.

[0057] When the filter detection component 100 of the present solution is used in the filter detection tooling 400, since the first shell 401 and the second shell 402 are relatively rotatable structures, in order to facilitate wiring and ensure line reliability, as a preferred implementation option, preferably, the filter detection component 100 described in the present solution also includes a connecting cable 130, one end of the connecting cable 130 is connected to the first circuit board 120, and the other end of the connecting cable 130 is connected to the second circuit board 110, so that the main control unit 105 is connected to the light source driving unit 102; the first shell 401 and the second shell 402 are rotatably connected to each other, and the sides thereof are respectively provided with wiring grooves 4013 and 4023 corresponding to the connecting cable 130 for passing through.

[0058] In the selection of the rotating connection member 403, as a preferred implementation option, preferably, the rotating connection member 403 described in this solution is a hinge.

[0059] Regarding data transmission with the host computer 200, as a preferred implementation option, preferably, the main control unit 105 of this solution is connected to the host computer 200 by wired communication or wireless communication via the communication unit 107. When it is a wired communication connection, a data interface 4015 is provided on one side of the first housing 401. The data interface 4015 is connected to the main control unit 105, and is also used for wired communication connection with the host computer 200.

[0060] exist Figures 1 to 4 Based on the above, the focus is on combining Figure 5In order to facilitate batch detection, as a preferred implementation option, preferably, the filter detection assembly 100 described in this scheme is a plurality of groups; a plurality of first windows 4012 are provided on the first sink 4014 of the first shell 401, and a plurality of second windows 4022 corresponding to the first windows 4012 are provided on the second sink 4024 of the second shell 402, that is, the first circuit board 120 and the second circuit board 110 of the plurality of groups of the filter detection assemblies 100 are respectively arranged in the first shell 401 and the second shell 402, and the detection light is avoided and transmitted through the plurality of first windows 4012 and the second windows 4022.

[0061] exist Figures 1 to 5 Based on the above, as an application example, the working principle of the filter detection component 100 mentioned in this solution can be briefly described as follows Figure 6 As shown, as an example of the detection principle of the present scheme, when detecting an optical filter with a working wavelength of 395nm (i.e., a filter that is light-transmitting at a wavelength of 395nm), the present scheme can use a light-emitting tube that can emit light in a specific wavelength range as a light source, and the main control unit controls the light source driving unit to drive the light source to emit a detection light containing a wavelength of 395nm. The light beam formed by the detection light covers the inspection area of ​​the optical filter to be inspected, and then is received by the PIN tube (signal receiving unit), and then photoelectric conversion is performed. After the signal is amplified, it is transmitted to the host computer through the main control chip, and the host computer performs data analysis, and the optical signal received by the signal receiving unit is judged in combination with the output of the detection light from the light source (reference signal). If light with a wavelength other than 395nm is received or the amount or intensity of light received at a wavelength of 395nm does not meet the requirements, it can be judged that the performance of the optical filter to be inspected is non-compliant or temporarily determined to be abnormal.

[0062] The main control unit 105 of the present solution can be operated by deploying two processing chips (SU1 chip and SU2 chip) (the circuit diagrams of which are shown in FIG. Figure 7 , Figure 8 shown), where Figure 7 The chip SU1 shown is used for data exchange with the host computer, that is, signal transmission and reception. Figure 7 The chip SU1 shown is Figure 8 The chips SU2 shown are all compatible with Fig.12 In order to facilitate data interaction, in this solution, the chip SU1 is also connected to a DA conversion unit ( Fig.11 In addition, this solution Figure 8 The chip SU2 shown is used with Fig. 9 The light source driving unit and the light source circuit shown in Fig.10The circuit connection of the signal receiving unit and the signal amplifying unit shown in the figure, that is, the chip SU2 mainly receives the control signal of the host computer and performs internal control. In order to improve the power supply stability, the present solution can also set a voltage stabilizing unit ( Fig.13 as shown) for stable power supply.

[0063] The above descriptions are only some embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A filter detection component, characterized in that: It includes: A light source, used for outputting detection light; A light source driving unit, electrically connected to the light source and used to drive the light source to turn on and off; A signal receiving unit is arranged on the optical path of the detection light output by the light source, and an accommodating area for placing the filter to be detected is formed between the light source and the signal receiving unit. After the detection light output by the light source is incident on the filter to be detected, an optical signal in the detection light with a wavelength adapted to the working wavelength of the filter to be detected passes through the filter to be detected and is received by the signal receiving unit, and the signal receiving unit performs photoelectric conversion on the received optical signal; A signal amplifying unit connected to the signal receiving unit and used to amplify the signal after the photoelectric conversion performed by the signal receiving unit; A main control unit connected to the signal amplifying unit and the light source driving unit, and used to receive the signal amplified by the signal amplifying unit, and control the light source driving unit to drive the light source to output detection light, and the main control unit is also connected to a power supply that provides electrical energy; The main control unit is also connected to the host computer through the communication unit, and sends the signal amplified by the signal amplification unit to the host computer, which compares the signal with the reference signal to determine whether the performance of the filter to be tested is abnormal.

2. The filter detection assembly according to claim 1, characterized in that: The light source is an LED light emitting tube unit.

3. The optical filter detection assembly according to claim 1, characterized in that: The signal receiving unit includes a PIN tube and a PIN tube driving unit. The PIN tube is connected to the signal amplifying unit and is used to receive the optical signal transmitted through the filter to be tested and perform photoelectric conversion on the received optical signal. The PIN tube driving unit is respectively connected to the main control unit and the PIN tube and is used to drive the PIN tube to work.

4. The filter detection assembly according to claim 1, characterized in that: The power supply is a built-in power supply or an external power supply.

5. A filter detection tool, characterized in that: It includes the filter detection assembly according to any one of claims 1 to 4; It also includes: The first housing is a box-shaped housing structure, and a first installation cavity is provided inside the first housing. The signal receiving unit, the signal amplifying unit, the communication unit and the main control unit of the filter detection assembly are all arranged in the first installation cavity. A first sinking groove is formed on the upper end surface of the first housing, and a first window is provided in the first sinking groove. The signal receiving end of the signal receiving unit is directly opposite to the first window. The second shell is a box-shaped shell structure, which is arranged above the first shell. A second installation cavity is arranged inside the second shell. The light source of the filter detection assembly and the light source driving unit are both arranged in the second installation cavity. A second sink is formed on the lower end surface of the second shell. The second sink is provided with a second window facing the first window. The light emitting end of the light source faces the second window. One side of the second shell is rotatably connected to one side of the first shell through a rotating connection. The second shell and the first shell have a first state and a second state that cooperate with each other. In the first state, the lower end surface of the second shell covers the upper end surface of the first shell, and a closed cavity is formed between the first sink and the second sink, which is set as an accommodating area. In the second state, the second shell flips around the rotating connection to form an angle between the second shell and the first shell, and the accommodating area is at least partially open. Wherein, when the power supply is a built-in power supply, it is arranged in the first installation cavity. When it is an external power supply, a power supply interface for connecting to the power supply is provided on one side of the first shell, and the power supply interface is electrically connected to the main control unit.

6. A filter detection tool as claimed in claim 5, characterized in that: The filter detection component also includes a first circuit board and a second circuit board. The signal receiving unit, signal amplification unit, communication unit and main control unit of the filter detection component are integrated on the first circuit board, and the light source of the filter detection component and the light source driving unit are integrated on the second circuit board.

7. The filter detection tooling according to claim 6, characterized in that: The filter detection component also includes a connecting cable, one end of which is connected to the first circuit board, and the other end of which is connected to the second circuit board, so that the main control unit is connected to the light source driving unit; one side of the first shell and the second shell that are rotatably connected to each other are respectively provided with wiring grooves corresponding to the connecting cable for its passage.

8. The filter detection tooling as claimed in claim 5, characterized in that: The rotating connecting piece is a hinge.

9. The filter detection tooling as claimed in claim 5, characterized in that: The main control unit is connected to the host computer by wired communication or wireless communication through the communication unit. When it is a wired communication connection, a data interface is provided on one side of the first shell. The data interface is connected to the main control unit and is also used for wired communication connection with the host computer.

10. The filter detection tooling according to claim 5, characterized in that: The filter detection components are multiple groups; the first sink of the first shell is provided with a plurality of first windows, and the second sink of the second shell is provided with a plurality of second windows corresponding to the first windows one by one.

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