Case structure for high-performance photoelectric instrument

Abstract

The invention discloses a case structure for a high-performance photoelectric instrument, and belongs to the technical field of photoelectricity. According to the case structure provided by the invention, the optical-mechanical system and the data processing system are located in different chambers, the two chambers are both provided with independent air ducts, and the TEC refrigeration sheet and the heat dissipation sheet are designed at the top of the lower chamber, so that air entering the lower chamber of the case can be cooled or heated, and the heat dissipation efficiency is improved. The temperature of air passing through the upper part of the optical-mechanical system is kept relatively constant, the influence of temperature fluctuation of air around the optical-mechanical system is reduced, and the temperature control effect is remarkable; the dust-proof performance is good, the dust-proof assembly is designed at the air inlet to filter dust, and a sedimentation structure is designed in the case to further suppress dust. The dustproof assembly is flexible and convenient to clean dust and can be repeatedly used, so that the use cost is reduced; a large amount of stray light outside the case is prevented from directly reaching the inside of the optical-mechanical system, and measurement errors are reduced.

Description

Technical Field

[0001] The present invention belongs to the field of optoelectronic technology, and particularly relates to a chassis structure for a high-performance optoelectronic instrument. Background Art

[0002] The opto-mechanical system in a high-performance optoelectronic instrument is often sensitive to temperature, dust, and stray light. The opto-mechanical system directly determines the performance of the optoelectronic instrument. To ensure high performance stability of the optoelectronic instrument, a dedicated chassis is required for high-performance optoelectronic instruments. Specifically, a chassis with good temperature control, dust prevention, and stray light prevention performance is needed.

[0003] Currently, the chassis structures commonly used for high-performance optoelectronic instruments have the following problems:

[0004] First, there is a problem of poor temperature control performance in the current chassis. First of all, the opto-mechanical system and the data processing system are often in the same chassis compartment. The heat generated by the data processing system is transferred to the opto-mechanical system through air convection, thermal radiation, etc., causing the temperature of the opto-mechanical system to rise. When the temperature rises, the optical elements, structural parts, electronic devices, etc. inside the opto-mechanical system will expand, which will further cause changes in the relative positions and shapes of the optical elements, resulting in large temperature drifts in the relevant indicators of the opto-mechanical system. In severe cases, the instrument cannot be used. Secondly, the commonly used chassis does not control the temperature of the air entering the chassis. When there are large temperature fluctuations in the air temperature outside the chassis, the air temperature passing through the upper part of the opto-mechanical system will also have large fluctuations, which will further cause large temperature fluctuations in the opto-mechanical system, reducing the performance stability of the opto-mechanical system.

[0005] Second, there is a problem of insufficient dust prevention ability in the commonly used chassis for optoelectronic instruments. First of all, there is no dust filtering structure designed at the air inlet, resulting in a large amount of dust entering the chassis through the air inlet. Secondly, there is no dust settling structure designed inside the chassis, which leads to a large amount of dust directly reaching the vicinity of the opto-mechanical system inside the chassis. Further, if the dust falls on optical devices such as lenses and gratings inside the opto-mechanical system, it will greatly reduce the accuracy of the relevant indicators of the optoelectronic instrument.

[0006] Third, there is a problem of insufficient stray light suppression ability in the existing chassis structure. The air inlets and outlets of the chassis often face the opto-mechanical system directly, resulting in stray light in the external environment of the chassis directly irradiating the opto-mechanical system through the air inlet. A large amount of stray light directly enters the optical path in the opto-mechanical system and generates additional noise, which will further cause large measurement errors.

[0007] In summary, the commonly used chassis for current high-performance optoelectronic instruments has problems of insufficient capabilities in temperature control, dust prevention, and stray light prevention, which in turn affect the realization of the relevant performance indicators of high-performance optoelectronic instruments. The chassis structure for high-performance optoelectronic instruments proposed by the present invention effectively solves the above problems.

[0008] Disadvantages of the prior art:

[0009] For existing high-performance optoelectronic instrument chassis, the optomechanical system and the data processing system are often placed in the same chassis compartment. However, the heat generated by the data processing system is often relatively large, and the heat generated by the data processing system will transfer the heat to the optomechanical system through air convection, thermal radiation, etc., causing the temperature of the optomechanical system to rise. Due to thermal expansion, the relative positions and shapes of the optical elements, structural components, electronic devices, etc. inside the optomechanical system change, resulting in large temperature drifts in the relevant indicators of the optomechanical system, affecting the performance stability of the optomechanical system, and seriously causing the instrument to be unusable.

[0010] The commonly used chassis does not control the temperature of the air entering the chassis. When there are large temperature fluctuations in the air temperature outside the chassis, the air temperature passing through the upper part of the optomechanical system will also have large fluctuations, which in turn causes large temperature fluctuations in the optomechanical system, reducing the performance stability of the optomechanical system.

[0011] (3) For the currently commonly used chassis for optoelectronic instruments, there is no dust filtering structure designed at the air inlet, resulting in a large amount of dust entering the chassis interior through the air inlet. There is also no dust settling structure designed inside the chassis, which causes a large amount of dust to directly reach near the optomechanical system inside the chassis. Further, if the dust falls on optical devices such as lenses and gratings inside the optomechanical system, it will greatly reduce the accuracy of the relevant indicators of the optoelectronic instrument.

[0012] (4) For the currently commonly used chassis for optoelectronic instruments, the air inlets and outlets often face the optomechanical system directly, resulting in stray light in the external environment of the chassis directly irradiating the optomechanical system through the air inlet. A large amount of stray light directly enters the optical path in the optomechanical system and generates additional noise, resulting in large measurement errors. Summary of the Invention

[0013] In view of the above technical problems existing in the prior art, the present invention proposes a chassis structure for high-performance optoelectronic instruments, which is reasonably designed, overcomes the deficiencies of the prior art, and has good effects.

[0014] To achieve the above object, the present invention adopts the following technical solutions:

[0015] A chassis structure for high-performance optoelectronic instruments, including an upper cover (1), a partition (3), and a frame (4); wherein,

[0016] The upper cover (1) is connected to the frame (4) to enclose a chamber;

[0017] The partition board (3) divides the chamber enclosed by the upper cover (1) and the frame (4) into two parts. The part located in the upper part is called the upper chamber, and the part located in the lower part is called the lower chamber;

[0018] A blower (2) and a data processing system (12) are arranged in the upper chamber; the blower (2) is located on the left side of the upper chamber and is used to discharge the gas in the upper chamber and the lower chamber; the data processing system (12) is fixed on the partition board (3) at the bottom of the upper chamber;

[0019] An optical machine system (5), a heat sink (10), a TEC refrigeration chip (11) and at least one dust-proof component are arranged in the lower chamber;

[0020] The TEC refrigeration chip (11) and the heat sink (10) are fixed to the lower part of the partition board (3) to adjust the temperature of the air entering the lower chamber and make the temperature of the air flowing through the optical machine system (5) constant.

[0021] Preferably, the dust-proof component is arranged at the air inlet of the lower chamber and is used to filter the dust in the gas entering the lower chamber; it includes:

[0022] A dust-proof seat (6) having an air inlet and a ventilation hole; it is fixed to the frame (4) by screws (9);

[0023] A dust filter net (7) is detachably fixed to the air inlet of the dust-proof seat (6) through a fixing seat (8) and screws (9);

[0024] The fixing seat (8) is used to fix the dust filter net (7);

[0025] The screw (9) is used to fix the dust-proof seat (6).

[0026] Preferably, the ventilation hole C on the dust-proof seat (6) is far from the air inlet where the dust filter net (7) is located, and the dust filtering space formed by the dust-proof seat (6) and the dust filter net (7) is used for dust settlement; the dust-proof component can be installed vertically or horizontally, with strong versatility.

[0027] Preferably, the space enclosed by the inner side of the frame (4) in the lower chamber, the lower side of the partition board (3), the right side of the heat sink (10), the right side of the TEC refrigeration chip (11), the right side of the dust-proof seat (6) at the bottom, and the outside of the dust-proof seat (6) on the right is the first lower chamber space and is used for secondary air settlement;

[0028] The space in the upper bin except for the fan (2) and the data processing system (12) is called the upper bin space; the space enclosed by the inner side of the frame (4), the lower side of the partition board (3), the left side of the heat sink (10), the left side of the TEC cooler (11), and the left side of the dust-proof seat (6) at the bottom in the lower bin is the second lower bin space, which is used to accommodate the optical engine system (5).

[0029] The space enclosed by the lower side of the heat sink (10) and the upper side of the dust-proof seat (6) at the bottom of the lower bin is the temperature control channel space.

[0030] The space enclosed by the dust-proof seat (6) at the bottom of the lower bin and the dust filter net (7) is the first dust filtering space.

[0031] The space enclosed by the dust-proof seat (6) at the lower right side of the lower bin and the dust filter net (7) is the second dust filtering space.

[0032] Preferably, ventilation holes E are provided on the partition board (3) to form an upward air flow from the second lower bin space to the upper bin space, preventing dust in the upper bin from settling near the optical engine system (5).

[0033] Preferably, the paths for stray light outside the chassis to enter include:

[0034] The stray light at the air inlet A sequentially passes through the first dust filtering space, the first lower bin space, and the temperature control channel space to reach the optical engine system (5).

[0035] The stray light at the air inlet B sequentially passes through the second dust filtering space, ventilation hole C, ventilation hole D, and the upper bin space to reach the optical engine system (5).

[0036] The stray light at the air outlet of the chassis needs to pass through the upper bin space and ventilation hole E to reach the optical engine system (5), and the stray light is scattered and attenuated by the surfaces of multiple parts in the path.

[0037] Preferably, the upper bin air duct is connected to the air outlet through the air inlet B, the second dust filtering space, ventilation holes C and D; the lower bin air duct is connected to the air outlet through the air inlet A, the first dust filtering space, ventilation hole C, the temperature control channel space, and ventilation hole E.

[0038] The air outlet is located on the left side of the upper bin, and the air is exhausted through the fan (2). The stray light outside the chassis needs to pass through multiple scattering path attenuations to reach the optical engine system (5).

[0039] Preferably, the upper bin and the lower bin respectively have independent air ducts to avoid the heat generated by the data processing system (12) being transferred to the optical engine system (5).

[0040] Preferably, the number of dust-proof components is two, which are respectively located at the bottom and the right side of the lower bin.

[0041] Beneficial technical effects brought by the present invention:

[0042] (1) The chassis structure proposed in the present invention has a novel design and a reasonable layout. The optical-mechanical system and the data processing system are located in different compartments, and both compartments have independent air ducts, which minimizes the impact of the data processing system inside the chassis on the optical-mechanical system.

[0043] (2) The chassis structure proposed in the present invention is designed with TEC cooling fins and heat sinks on the top of the lower chamber, which can cool or heat the air entering the lower chamber of the chassis, so that the temperature of the air passing through the upper part of the optical-mechanical system remains relatively constant, thereby minimizing the impact of temperature fluctuations of the air around the optical-mechanical system and achieving a significant temperature control effect.

[0044] (3) The chassis structure proposed by the present invention has good dustproof performance. A dustproof component is designed at the air inlet to filter dust, and a sedimentation structure is designed inside the chassis to further suppress dust. The dustproof component is flexible and convenient for cleaning dust and can be used repeatedly, which reduces the cost of use.

[0045] (4) The structure of the chassis proposed in the present invention avoids a large amount of stray light outside the chassis from directly reaching the interior of the optomechanical system. Before the stray light reaches the optomechanical system, it undergoes multiple scattering attenuations. The energy of the stray light that reaches the vicinity of the optomechanical system is already very weak, thereby minimizing the measurement error. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is the overall structure diagram;

[0047] Figure 2 Schematic diagram of chassis space description;

[0048] Figure 3 This is a schematic diagram of the chassis air duct;

[0049] Figure 4 This is a schematic diagram of the vertical installation of the dustproof component;

[0050] Figure 5 This is a schematic diagram of the horizontal installation of the dustproof component;

[0051] Among them, 1-upper cover; 2-fan; 3-partition; 4-frame; 5-optical and mechanical system; 6-dustproof seat; 7-dust filter; 8-fixing seat; 9-screw; 10-heat sink; 11-TEC cooling plate; 12-data processing system. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0053] like Figure 1As shown in the figure, the chassis structure proposed by the present invention includes: an upper cover 1, a fan 2, a partition 3, a frame 4, an optical engine system 5, a dust-proof seat 6, a dust filter net 7, a fixing seat 8, screws 9, a heat sink 10, a TEC cooling sheet 11, and a data processing system 12. By combining the above structures together in sequence, a chassis structure for a high-performance optoelectronic instrument is formed.

[0054] The specific assembly and action relationships are as follows:

[0055] The partition 3 divides the chamber enclosed by the upper cover 1 and the frame 4 into two parts. The part located in the upper part is called the upper chamber, and the part located in the lower part is called the lower chamber.

[0056] In the upper chamber, there are arranged a fan 2 and a data processing system 12. The fan 2 is located on the left side of the upper chamber, and the data processing system 12 is fixed on the partition 3 at the bottom of the upper chamber.

[0057] In the lower chamber, there are arranged two dust-proof components, an optical engine system 5, a heat sink 10, and a TEC cooling sheet 11, where

[0058] The two dust-proof components have the same structure. The dust-proof component consists of a dust-proof seat 6, a dust filter net 7, a fixing seat 8, and screws 9. The two dust-proof components are respectively located at the bottom and the lower right part of the lower chamber. The dust-proof seats 6 in the two dust-proof components are both fixed to the frame 4 through screws 9. The air outlet of the dust filter component located at the bottom of the lower chamber faces right, and the air outlet of the dust-proof component located in the lower right part of the lower chamber faces upward and corresponds to and penetrates through the ventilation hole on the partition 3. The heat sink 10 and the TEC cooling sheet 11 are fixed to the lower part of the partition 3, and the optical engine system 5 is fixed to the bottom of the frame 4 and to the left of the dust-proof component.

[0059] As Figure 2 shown in the figure, the space in the upper chamber except for the fan 2 and the data processing system 12 is called the upper chamber space; the space enclosed by the inner side of the frame 4, the lower side of the partition 3, the left side of the heat sink 10, the left side of the TEC cooling sheet 11, and the left side of the dust-proof seat 6 located at the bottom in the lower chamber is called the lower chamber space 2; the space enclosed by the inner side of the frame 4, the lower side of the partition 3, the right side of the heat sink 10, the right side of the TEC cooling sheet 11, the right side of the dust-proof seat 6 located at the bottom, and the outer side of the dust-proof seat 6 located in the right part in the lower chamber is called the lower chamber space 1; the space enclosed by the lower side of the heat sink 10 and the upper side of the dust-proof seat 6 located at the bottom of the lower chamber is called the temperature control channel space; the space enclosed by the dust-proof seat 6 located at the bottom of the lower chamber and the dust filter net 7 is called the dust filter space 1; the space enclosed by the dust-proof seat 6 located in the lower right side of the lower chamber and the dust filter net 7 is called the dust filter space 2.

[0060] Key points and protection points:

[0061] (1) The designed structure tries to avoid the influence of the data processing system 12 inside the chassis on the optical engine system 5.

[0062] like Figure 1 As shown, the chassis forms a two-chamber structure through the upper cover 1, the partition 3, and the frame 4, and the optical-mechanical system 5 and the data processing system 12 are placed in different chambers in the chassis. The optical-mechanical system 5 with less heat generation is located in the lower chamber at the bottom of the chassis, and the data processing system 12 with greater heat generation is located in the upper chamber at the top of the chassis, and both the upper chamber and the lower chamber are designed with independent air ducts (chassis air ducts as shown in FIG. Figure 3 As shown), this design avoids the heat generated by the data processing system 12 from being transferred to the optical-mechanical system 5, causing the optical-mechanical system 5 to heat up, thereby causing the relevant performance indicators to drift.

[0063] The flow direction of air in the air duct in the lower chamber: the outside air first enters the dust filter space 1 from the air inlet A, and then passes through the ventilation hole C on the dustproof seat 6 to enter the lower chamber space 1, and then passes through the temperature control channel space to enter the lower chamber space 2 and take away the heat generated by the optical machine system in the lower chamber space 2, and then passes through the ventilation hole E on the partition 3 to reach the upper chamber space, and finally the heat generated by the optical machine system is discharged to the outside of the air outlet of the chassis through the fan 2 in the upper chamber.

[0064] Air flow direction of the air duct in the upper chamber: the outside air enters the dust filter space 2 from the air inlet B, and then passes through the ventilation hole C on the dustproof seat 6 and the ventilation hole D on the partition to enter the upper chamber space, taking away the heat generated by the data processing system 12 in the upper chamber space, and finally passes through the fan 2 in the upper chamber, carrying the heat generated by the data processing system 12 and being discharged to the outside of the air outlet of the chassis.

[0065] (2) The structure of the chassis design can control the temperature of the air passing through the optical-mechanical system 5.

[0066] The chassis is designed with a TEC cooling sheet 11 and a heat sink 10 at the top of the lower chamber. The TEC cooling sheet 11 can cool down or heat up the heat sink 10. The air entering the lower chamber of the chassis is first cooled down or heated up by the heat sink 10 before passing through the optomechanical system 5, so that the temperature of the air passing through the upper part of the optomechanical system 5 remains relatively constant, thereby minimizing the impact of temperature fluctuations of the air around the optomechanical system 5 and ensuring the performance stability of the optomechanical system.

[0067] The structure of this chassis design has good dustproof performance.

[0068] ① Dust-proof components are designed at both air inlets to filter dust from the air entering the chassis

[0069] like Figure 4 , 5As shown, the dustproof assembly consists of a dustproof seat 6, a dust filter 7, and a fixing screw 9. The dust filter 7 is fixed to the air inlet of the dustproof seat 6 by a fixing seat 8 and screws 9. The dust filter 7 blocks part of the dust from entering the space enclosed by the dust filter 7 and the dustproof seat 6. The dustproof groups at the two air inlets have the same structure, but the installation directions are different. This design increases the versatility of the parts.

[0070] ②Dust settling in the internal space of the dustproof component

[0071] The dustproof seat 6 is designed with a ventilation hole C, which is far away from the air inlet (air inlet A, air inlet B) where the dust filter 7 is located. There are two ways to install the dustproof component. One is vertical installation (the ventilation hole C is facing right, such as Figure 4 One is horizontal installation (ventilation hole C faces upward, as shown in Figure 5 As shown), these two installation methods can make the larger dust entering the space surrounded by the dust seat 6 and the dust filter net 7 (dust filter space 1, dust filter space 2) settle under the action of gravity, reduce the dust content in the air, and inhibit some dust from continuing to flow with the air.

[0072] ③The lower chamber space is used for dust settling again

[0073] like Figure 3 As shown, the air entering the chassis from the air inlet A must first pass through the lower chamber space 1 and the temperature control channel space before reaching the lower chamber space 2 where the optical-mechanical system is located. Under the action of gravity, the dust in the air in the lower chamber space 1 will settle again in this space, and the dust in the air will be suppressed from continuing to flow with the air to the lower chamber space 2, so that the amount of dust reaching the space near the optical-mechanical system is further reduced.

[0074] ④Try to avoid dust in the upper chamber space from settling into the lower chamber space

[0075] like Figure 3 As shown, ventilation holes E are designed on the partition 3. The air flows through the ventilation holes E from the lower chamber space 2 to the upper chamber space, which is an upward airflow. It tries to avoid the dust in the upper chamber space from settling near the optical machine system in the lower chamber space 2.

[0076] In addition, when the space enclosed by the dustproof seat 6 and the dust filter 7 is dusty, the dust filter 7 and the fixing seat 8 can be taken out together after removing the fixing screws 9, and the dust can be cleaned and then installed in the corresponding position. This design is flexible and convenient for cleaning dust, and can be used repeatedly, reducing the cost of use.

[0077] The structure of this chassis design tries to prevent a large amount of stray light outside the chassis from directly reaching the inside of the optical-mechanical system. The stray light at the two air inlets and one air outlet undergoes multiple scattering attenuations before reaching the optical-mechanical system 5. The energy of the stray light reaching the vicinity of the optical-mechanical system 5 is already very weak, which minimizes the measurement error. The path of the stray light outside the chassis to the optical-mechanical system is as follows:

[0078] ① The stray light located at the air inlet of the dustproof component at the bottom of the chassis (air inlet A) must pass through the dust filter space 1, the lower chamber space 1, and the temperature control channel space in turn before reaching the lower chamber space 2 where the optical machine system is located. In the middle, it is scattered and attenuated multiple times on the surfaces of multiple parts such as the dust filter 7, the dustproof seat 6, the frame 4, the partition 3, and the heat sink 10.

[0079] ② The stray light from the air inlet of the dustproof component on the lower right side of the chassis (air inlet B) must pass through the dust filter space 2, ventilation hole C, ventilation hole D, and upper chamber space in turn before reaching the lower chamber space 2 where the optical system is located. In the middle, it is scattered and attenuated by the surfaces of multiple parts such as the dust filter 7, dustproof seat 6, partition 3, upper cover 1, and frame 4.

[0080] ③ The stray light located at the air outlet on the left side of the upper part of the chassis must pass through the upper chamber space and ventilation hole E to reach the lower chamber space 2 where the optical machine system is located. In the middle, it is scattered and attenuated by the surfaces of multiple parts such as the fan 2, frame 4, upper cover 1, partition 3, etc.

[0081] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A chassis structure for a high-performance optoelectronic instrument, characterized in that It includes an upper cover (1), a partition board (3), and a frame (4); among them, The upper cover (1) is connected to the frame (4) to enclose a chamber; The partition board (3) divides the chamber enclosed by the upper cover (1) and the frame (4) into two parts. The part located in the upper part is called the upper chamber, and the part located in the lower part is called the lower chamber; A blower (2) and a data processing system (12) are arranged in the upper chamber; the blower (2) is located on the left side of the upper chamber and is used to discharge the gas in the upper chamber and the lower chamber; the data processing system (12) is fixed on the partition board (3) at the bottom of the upper chamber; An optical machine system (5), a heat sink (10), a TEC cooling sheet (11), and at least one dust-proof component are arranged in the lower chamber; The TEC cooling sheet (11) and the heat sink (10) are fixed to the lower part of the partition board (3) to adjust the temperature of the air entering the lower chamber, so that the temperature of the air flowing through the optical machine system (5) is constant.

2. The chassis structure for a high-performance optoelectronic instrument according to claim 1, characterized in that, The dust-proof component is arranged at the air inlet of the lower chamber and is used to filter the dust in the gas entering the lower chamber; it includes: A dust-proof seat (6), which has an air inlet and a ventilation hole; it is fixed to the frame (4) by screws (9); A dust filter net (7), which is detachably fixed to the air inlet of the dust-proof seat (6) through a fixing seat (8) and screws (9); A fixing seat (8), which is used to fix the dust filter net (7); Screws (9), which are used to fix the dust-proof seat (6).

3. The chassis structure for a high-performance optoelectronic instrument according to claim 2, wherein The ventilation hole C on the dust-proof seat (6) is far away from the air inlet where the dust filter net (7) is located. The dust filtering space enclosed by the dust-proof seat (6) and the dust filter net (7) is used for dust settlement; the dust-proof component can be installed vertically or horizontally, with strong versatility.

4. The chassis structure for a high-performance optoelectronic instrument according to claim 3, wherein The space enclosed by the inner side of the frame (4) in the lower chamber, the lower side of the partition board (3), the right side of the heat sink (10), the right side of the TEC cooling sheet (11), the right side of the dust-proof seat (6) at the bottom, and the outside of the dust-proof seat (6) on the right is the first lower chamber space, which is used for secondary air settlement; The space in the upper chamber except for the blower (2) and the data processing system (12) is called the upper chamber space; the space enclosed by the inner side of the frame (4) in the lower chamber, the lower side of the partition board (3), the left side of the heat sink (10), the left side of the TEC cooling sheet (11), and the left side of the dust-proof seat (6) at the bottom is the second lower chamber space, which is used to accommodate the optical machine system (5); The space enclosed by the lower side of the heat sink (10) and the upper side of the dust-proof seat (6) at the bottom of the lower chamber is the temperature control channel space; The space enclosed by the dust-proof seat (6) at the bottom of the lower chamber and the dust filter net (7) is the first dust filtering space; The space enclosed by the dust-proof seat (6) on the lower right side of the lower chamber and the dust filter net (7) is the second dust filtering space.

5. The chassis structure for a high-performance optoelectronic instrument according to claim 4, characterized in that, The partition board (3) is provided with a ventilation hole E to form an upward air flow from the second lower chamber space to the upper chamber space, preventing the dust in the upper chamber from settling near the optical machine system (5).

6. The chassis structure for a high-performance optoelectronic instrument according to claim 5, characterized in that, The path of the stray light entering from the outside of the chassis includes: The stray light at the air inlet A sequentially passes through the first dust filtering space, the first lower chamber space, and the temperature control channel space to reach the optical machine system (5); The stray light at the air inlet B passes through the second dust filtering space, ventilation hole C, ventilation hole D, and the upper chamber space in sequence to reach the optical engine system (5); The stray light at the air outlet of the chassis needs to pass through the upper chamber space and ventilation hole E to reach the optical engine system (5), and is scattered and attenuated by the surfaces of multiple parts in the path.

7. The chassis structure for a high-performance optoelectronic instrument according to claim 6, characterized in that, The upper chamber air duct is connected to the air outlet through the air inlet B, the second dust filtering space, ventilation holes C and D, and the lower chamber air duct is connected to the air outlet through the air inlet A, the first dust filtering space, ventilation hole C, the temperature control channel space, and ventilation hole E; The air outlet is located on the left side of the upper chamber and discharges air through the fan (2). The stray light outside the chassis needs to pass through multiple scattering paths and be attenuated before reaching the optical engine system (5).

8. The chassis structure for a high-performance optoelectronic instrument according to claim 1, characterized in that, The upper chamber and the lower chamber respectively have independent air ducts to prevent the heat generated by the data processing system (12) from being transferred to the optical engine system (5).

9. The chassis structure for a high-performance optoelectronic instrument according to claim 1, characterized in that The number of dust-proof components is two, which are respectively located at the bottom and the right side of the lower chamber.

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