CN114325997B - Ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and assembling and adjusting method thereof - Google Patents
Ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and assembling and adjusting method thereof Download PDFInfo
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- CN114325997B CN114325997B CN202111418697.0A CN202111418697A CN114325997B CN 114325997 B CN114325997 B CN 114325997B CN 202111418697 A CN202111418697 A CN 202111418697A CN 114325997 B CN114325997 B CN 114325997B
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Abstract
The invention relates to an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and an assembling and adjusting method thereof, belonging to the field of airborne optical instruments; the ultra-narrow band filter is fixed in the cavity formed by the first sealing light window component, the main frame and the second sealing light window component through the pressing ring, and a filter heat insulation pad is arranged between the ultra-narrow band filter and the step surface of the through hole of the main frame, and a filter positioning ring is arranged between the ultra-narrow band filter and the pressing ring, so that the ultra-narrow band filter is ensured not to be in contact with the main frame; the two thermoelectric coolers are respectively fixed on two opposite side walls of the main frame through a first heat sink component and a second heat sink component; the two heating plates are respectively fixed on the other two opposite side walls of the main frame through the two heating plate fixing plates. According to the invention, the temperature of the ultra-narrow band filter is controlled through the main frame and the gas in the sealed light window, and the ultra-narrow band filter is accurately Wen Kongchao within a wide temperature range of-55-70 ℃, so that the ultra-narrow band filter can be accurately and reliably controlled within the wide temperature range of the airborne environment.
Description
Technical Field
The invention belongs to the field of airborne optical instruments, and particularly relates to an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and an assembling and adjusting method thereof.
Background
In a remote laser ranging machine, an ultra-narrow band filtering method is often adopted to raise the background light suppression level of an echo light signal received by a laser ranging system. The ultra-narrow band filter is a temperature sensitive device, and the drift of the center wavelength with temperature can affect the transmittance. Therefore, in a wide temperature range of the on-board environment, it is necessary to design a packaging configuration for precise temperature control to ensure emission, reception wavelength matching and optimal transmittance.
One temperature control configuration disclosed in the prior art is to weld a thermoelectric cooler directly to an ultra-narrow band filter, the thermoelectric cooler directly heating or cooling the filter. Because the optical filter has poor heat conductivity, larger thermal stress can be generated in the optical filter in the temperature control process, the thermal stress can cause the refractive index of the optical lens to emit change, the overall performance of the optical system is affected, and the optical filter can be burst and the like irreversible damage after the thermal stress reaches a certain limit.
Disclosure of Invention
The technical problems to be solved are as follows:
in order to avoid the defects of the prior art, the invention provides an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and an assembling and adjusting method thereof, and provides an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control within-55-70 ℃ and an assembling and adjusting method thereof, so that the ultra-narrow band filter can realize accurate and reliable temperature control within the wide temperature range of an airborne environment.
The technical scheme of the invention is as follows: an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control is characterized in that: the solar heat collector comprises a first heat sink component 1, a first sealing light window component 2, a pressing ring 3, a light filter positioning ring 4, an ultra-narrow band light filter 5, a heating plate 7, a sealing ring 8, a second sealing light window component 9, a light filter heat insulation pad 10, a main frame 11, a heating plate fixing plate 12, a thermoelectric cooler 13 and a second heat sink component 14;
the main frame 11 is of a cuboid structure with a stepped through hole in the center, and the ultra-narrow band filter 5 is clamped and fixed through the pressing ring 3 and a stepped surface in the middle of the through hole, wherein a filter insulating pad 10 is arranged between the ultra-narrow band filter 5 and the stepped surface of the through hole of the main frame 11, and a filter positioning ring 4 is arranged between the ultra-narrow band filter 5 and the pressing ring 3, so that the ultra-narrow band filter 5 is ensured not to be in contact with the main frame 11;
the first sealing light window component 2 and the second sealing light window component 9 are respectively fixed on the end surfaces of two ends of a through hole of the main frame 11, the two end surfaces of the through hole of the main frame 11 are provided with sealing grooves along the circumferential direction, and sealing connection is realized through sealing rings 8 arranged in the sealing grooves;
the two thermoelectric coolers 13 are fixed on two opposite side walls of the main frame 11 through the first heat sink part 1 and the second heat sink part 14 respectively; the two heating plates 7 are fixed to the other two opposite side walls of the main frame 11 by two heating plate fixing plates 12, respectively.
The invention further adopts the technical scheme that: the pressing ring 3 is of a circular ring structure, external threads are arranged on the outer peripheral surface of the pressing ring, and the pressing ring is installed in a through hole of the main frame 11 through threads; and a limit structure is arranged at the installation position of the optical filter positioning ring 4, so that the optical filter positioning ring 4 is prevented from rotating when the pressing ring 3 is screwed.
The invention further adopts the technical scheme that: the optical filter positioning ring 4 is of a circular ring structure with a radial section L, and one end of the optical filter positioning ring is sleeved on the outer peripheral surface of the ultra-narrow band optical filter 5; the other end is attached to the outer edge of one side end face of the ultra-narrow band filter 5 and is positioned between the ultra-narrow band filter 5 and the pressing ring 3; this structure can isolate the ultra-narrow band filter 5 from the main frame 11.
The invention further adopts the technical scheme that: the main frame 11 is made of copper, aluminum alloy or aluminum-based silicon carbide material.
The invention further adopts the technical scheme that: the first sealing light window component 2 consists of a sealing light window 2-1 and a light window support 2-2, a central stepped through hole and a plurality of fixing holes are formed in the end face of the light window support 2-2, the sealing light window 2-1 is fixed on the stepped face of the stepped through hole in a radial glue filling mode, a plurality of screws are installed in one-to-one correspondence with the fixing holes, and the light window support 2-2 is fixed on the end face of the main frame 11.
The invention further adopts the technical scheme that: the second sealing light window component 9 consists of a sealing light window 9-1, a light window bracket 9-2 and two temperature sensors 9-3, wherein a stepped through hole and a plurality of fixing holes are formed in the end face of the light window bracket 9-2, the sealing light window 9-1 is fixed on the stepped surface of the stepped through hole in a radial glue filling mode, a plurality of screws are arranged in one-to-one correspondence with the fixing holes, and the light window bracket 9-2 is fixed on the end face of the main frame 11; the two temperature sensors 9-3 are adhered to the through holes on the end face of the optical window bracket 9-2 in a glue filling mode, and the two through holes are close to the outer edge of the sealed optical window 9-1.
The invention further adopts the technical scheme that: also comprises a heat shield 6, and the two heat shields 6 are respectively fixed on two sides of the main frame 11 where the heating plates 7 are arranged by screws.
The invention further adopts the technical scheme that: the filter heat insulation pad 10 and the filter positioning ring 4 are made of titanium alloy or ceramic materials.
An assembling and adjusting method of an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control is characterized by comprising the following steps:
step 1: placing the sealed optical window 2-1 into a groove of the optical window bracket 2-2, radially pouring glue, bonding, standing for 24 hours and solidifying;
step 2: placing the sealed optical window 9-1 into a groove of the optical window bracket 9-2, bonding in a radial glue filling mode, bonding the two temperature sensors 9-3 into a through hole of the optical window bracket 9-2 in a glue filling mode, and standing for 24 hours for solidification; the sequence of the step 1 and the step 2 can be interchanged;
step 3: the two heating plates 7 are respectively pressed onto two opposite mounting surfaces of the main frame 11 through two heating plate fixing plates 12 by using screws; the two heat shields 6 are respectively arranged on the two side surfaces of the main frame 11, on which the heating plates 7 are arranged, and the two heating plates 7 are packaged by screws;
step 4: placing a sealing ring 8 in a sealing groove of the main frame 11, and fixing the second sealing light window component 9 on one side end surface of the main frame 11 by using screws;
step 5: firstly, respectively sticking indium foil or coating heat-conducting silicone grease on two sides of two thermoelectric coolers 13; then respectively pressing the first heat sink component 1 and the second heat sink component 14 onto two opposite side walls of the main frame 11, and fixing the two opposite side walls by using screws;
step 6: bonding a temperature sensor at the center of the ultra-narrow band filter 5 or bonding the temperature sensor to a central hole of the process lens position; the size of the technical lens is consistent with that of the ultra-narrow band filter 5, and the technical lens is installed in the main frame 11 instead of the ultra-narrow band filter 5 during temperature measurement;
step 7: the filter heat insulation pad 10, the ultra-narrow band filter 5 or the process lens and the filter positioning ring 4 are sequentially placed on a step surface in the step-shaped through hole of the main frame 11 and then are pressed and fixed through the pressing ring 3;
step 8: a sealing ring 8 is placed in a sealing groove of the other end face of the main frame 11, and the first sealing light window component 2 is fixed on the other end face of the main frame 11 by using screws;
step 9: after the installation is completed, the assembly is placed in a high-low temperature box, a temperature sensor at the center hole of the ultra-narrow band filter 5 or the process lens and a temperature sensor in the second sealing optical window component 9 are calibrated, and data are recorded into temperature control circuit software;
step 10: and sequentially removing the first sealing optical window component 2, the pressing ring 3, the filter heat insulation pad 10, the ultra-narrow band filter 5 or the process lens and the filter positioning ring 4, removing the temperature sensor at the center of the ultra-narrow band filter 5, or replacing the process lens provided with the temperature sensor with the ultra-narrow band filter 5, and then repeating the step 7 and the step 8 to finish the assembly of a final product.
The invention further adopts the technical scheme that: in the step 7, when the pressing ring 3 is screwed down, the screwing torque of the pressing ring 3 needs to be controlled, so that the surface shape change of the ultra-narrow band filter before and after screwing down is not more than 0.3λ, and the λ wavelength is 632nm.
Advantageous effects
The invention has the beneficial effects that: the invention provides an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control and an assembling and adjusting method thereof, and realizes the accurate temperature control of the ultra-narrow band filter in the wide temperature range of an airborne environment. Has the following remarkable advantages:
1. the temperature control is carried out on the ultra-narrow band filter through the main frame and the gas in the sealed light window, the ultra-narrow band filter is ensured not to be contacted with the main frame by utilizing the filter positioning ring and the filter heat insulation pad, the main frame is prevented from directly conducting heat to the ultra-narrow band filter in the temperature control process, and the ultra-narrow band filter is prevented from being damaged due to overlarge temperature stress.
2. One end of the ultra-narrow band filter is fastened by a pressing ring, and when the temperature control capacity and the accuracy of the temperature control configuration of the ultra-narrow band filter are calibrated, the pressing ring is removed, so that the process ultra-narrow band filter with a temperature sensor and the product ultra-narrow band filter can be replaced, and the actual temperature of the ultra-narrow band filter can be calibrated accurately in a laboratory environment.
3. The heating plate and the isothermal control components of the thermoelectric cooler are arranged in the radial direction of the ultra-narrow band filter, so that the ultra-narrow band filter is convenient to assemble, disassemble and maintain.
4. The ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control is realized by adopting a heating plate and a thermoelectric refrigerator, so that the accurate temperature control in a wider temperature range is ensured, and the device can work normally through testing in a temperature range of-55 ℃ to 70 ℃.
5. Compared with the sealing by glue filling, the sealing ring is matched with the first sealing light window component and the second sealing light window component to form a sealing environment, so that the debugging and maintenance are convenient.
Drawings
FIG. 1 is a schematic diagram of an ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control according to the present invention.
Fig. 2 is an isometric view of a first sealed optical window assembly of the present invention.
Fig. 3 is an isometric view of a second sealed optical window assembly of the present invention.
Fig. 4 is a schematic view of the main frame structure of the present invention.
Reference numerals illustrate: the heat-insulating device comprises a 1-first heat sink component, a 2-first sealed light window component, a 3-pressing ring, a 4-optical filter positioning ring, a 5-ultra-narrow band optical filter, 6-two heat shields, 7-two heating plates, 8-two sealing rings, 9-second sealed light window components, a 10-optical filter heat insulation pad, an 11-main frame, 12-two heating plate fixing plates, 13-two thermoelectric coolers and 14-second heat sink components.
Detailed Description
The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
According to the technical scheme of the embodiment of the invention, the ultra-narrow band filter temperature control configuration with the wide temperature range and accurate temperature control comprises a first heat sink component 1, a first sealing light window component 2, a pressing ring 3, a filter positioning ring 4, an ultra-narrow band filter 5, two heat shields 6, two heating plates 7, two sealing rings 8, a second sealing light window component 9, a filter heat insulation pad 10, a main frame 11, two heating plate fixing plates 12, two thermoelectric coolers 13 and a second heat sink component 14.
The main frame 11 is of a hexahedral structure with a stepped through hole in the middle, the ultra-narrow band filter 5 is mounted in the through hole of the main frame 11 through the pressing ring 3, the pressing ring 3 is of a circular ring structure, external threads are arranged on the outer peripheral surface of the pressing ring, and the vein relaxing threads are mounted in the through hole of the main frame 11; a filter heat insulation pad 10 is arranged between the ultra-narrow band filter 5 and the main frame 11, and a filter positioning ring 4 is arranged between the ultra-narrow band filter 5 and the pressing ring 3; the optical filter positioning ring 4 is of a circular ring structure with a radial section L, one end of the optical filter positioning ring is sleeved on the outer peripheral surface of the ultra-narrow band optical filter 5, and the other end of the optical filter positioning ring is attached to the outer edge of one side end surface of the ultra-narrow band optical filter 5 and is positioned between the ultra-narrow band optical filter 5 and the pressing ring 3; this structure can isolate the ultra-narrow band filter 5 from the main frame 11.
The first sealing light window part 2 is fixed to one end of the through hole of the main frame 11 through a screw, and a sealing ring 8 is arranged between the first sealing light window part and the through hole; the second sealing light window part 9 is fixed to the other end of the through hole of the main frame 11 through a screw, and a sealing ring 8 is arranged between the second sealing light window part and the through hole; the two thermoelectric coolers 13 are respectively arranged on two outer surfaces of the main frame 11 which are parallel to each other, and are respectively pressed onto the main frame 11 through the first heat sink component 1 and the second heat sink component 14; the two heating plates 7 are respectively arranged on the outer surfaces of the other two parallel surfaces of the main frame 11 and are pressed onto the main frame 11 through the heating plate fixing plates 12; the two heat shields 6 are screwed to the surface of the main frame 11 on which the heating plates 7 are mounted.
Referring to fig. 4, the main frame 11 is made of a material with better heat conduction performance and smaller thermal expansion coefficient, and the optimization scheme can be made of copper, aluminum alloy or aluminum-based silicon carbide material; a limit structure is arranged at the installation position of the optical filter positioning ring 4, so that the optical filter positioning ring 4 is ensured not to rotate when the pressing ring 3 is screwed up; and sealing groove structures are arranged on the surfaces at two ends of the stepped through hole.
Referring to fig. 2, the first sealing optical window part 2 is composed of a sealing optical window 2-1 and an optical window bracket 2-2, wherein a stepped through hole and a plurality of fixing holes are formed in the end face of the optical window bracket 2-2, the sealing optical window 2-1 is fixed on the stepped face of the stepped through hole in a radial glue filling mode, a plurality of screws are installed in one-to-one correspondence with the fixing holes, and the optical window bracket 2-2 is fixed on the end face of the main frame 11.
Referring to fig. 3, the second sealed optical window part 9 is composed of a sealed optical window 9-1, an optical window bracket 9-2 and two temperature sensors 9-3, wherein a stepped through hole and a plurality of fixing holes are formed in the end face of the optical window bracket 9-2, the sealed optical window 9-1 is fixed on the stepped surface of the stepped through hole in a radial glue filling mode, a plurality of screws are installed in one-to-one correspondence with the fixing holes, and the optical window bracket 9-2 is fixed on the end face of the main frame 11; the two temperature sensors 9-3 are adhered to the through holes on the end face of the optical window bracket 9-2 in a glue filling mode, and the two through holes are close to the outer edge of the sealed optical window 9-1.
Referring to fig. 1, the first heat sink member 1 and the second heat sink member 14 are composed of a heat pipe, a heat sink, and heat dissipation fins, and the three are fixedly connected by welding.
The filter heat insulation pad 10 and the filter positioning ring 4 are made of materials with low heat conductivity and low thermal expansion coefficient, and the optimization scheme can be made of titanium alloy or ceramic materials.
The method for adjusting the ultra-narrow band filter with the wide temperature range and accurate temperature control by adopting the configuration comprises the following specific steps:
step 1: placing the sealed optical window 2-1 into a groove of the optical window bracket 2-1, adopting silicone rubber for filling and sealing radial glue pouring for bonding, and standing for 24 hours for curing;
step 2: placing the sealed optical window 9-1 into a groove of the optical window bracket 9-2, adopting silicone rubber to fill and seal radial glue for bonding, adopting a glue filling mode to bond the two temperature sensors 9-3 into a through hole of the optical window bracket 9-2, standing for 24h for curing, and enabling the sequence of the step 1 and the step 2 to be interchangeable;
step 3: the two heating plates 7 are respectively pressed onto the two mounting surfaces of the main frame 11 through the two heating plate fixing plates 12 by using screws, and the two heat shields 6 are mounted on the main frame 11 by using screws;
step 4: placing a sealing ring 8 in a sealing groove of the main frame 11, and fixing the second sealing light window component 9 to the main frame 11 by using screws;
step 5: indium foils are respectively attached to two sides of the two thermoelectric coolers 13, and the two thermoelectric coolers are respectively pressed onto two mounting surfaces of the main frame 11 through the first heat sink part 1 and the second heat sink part 14 and fixed through screws;
step 6: bonding a temperature sensor to a center hole of a process lens which is the same as the ultra-narrow band filter 5 in size and is perforated in the center;
step 7: sequentially placing the filter heat insulation pad 10, the technical lenses and the filter positioning ring 4 into the step-shaped through holes of the main frame 11, and compacting and fixing the filter heat insulation pad, the technical lenses and the filter positioning ring through the pressing ring 3; when the pressing ring 3 is screwed down, the screwing torque of the pressing ring 3 needs to be controlled, so that the surface shape change of the ultra-narrow band filter before and after screwing down is not more than 0.3λ, and the λ wavelength is 632nm. The size of the technical lens is consistent with that of the ultra-narrow band filter 5, and the technical lens is installed in the main frame 11 to replace the ultra-narrow band filter 5 in temperature measurement.
Step 8: placing a sealing ring 8 in the other sealing groove of the main frame 11, and fixing the first sealing light window member 2 to the main frame 11 by using screws;
step 9: after the installation is completed, the assembly is placed in a high-low temperature box, a temperature sensor adhered to the center of the technical lens and a temperature sensor in the second sealing optical window component 9 are calibrated, and data are recorded into temperature control circuit software;
step 10: and (3) sequentially removing the first sealing light window component 2, the pressing ring 3, the filter heat insulation pad 10, the process lens and the filter positioning ring 4, replacing the process lens with the ultra-narrow band filter 5, and repeating the steps 7 and 8.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (8)
1. An ultra-narrow band filter temperature control configuration with wide temperature range and accurate temperature control is characterized in that: the solar heat collector comprises a first heat sink component (1), a first sealing light window component (2), a pressing ring (3), a light filter positioning ring (4), an ultra-narrow band light filter (5), a heating plate (7), a sealing ring (8), a second sealing light window component (9), a light filter heat insulation pad (10), a main frame (11), a heating plate fixing plate (12), a thermoelectric refrigerator (13) and a second heat sink component (14);
the ultra-narrow band filter (5) is clamped and fixed through the pressing ring (3) and a stepped surface in the middle of the through hole, wherein a filter heat insulation pad (10) is arranged between the ultra-narrow band filter (5) and the stepped surface of the through hole of the main frame (11), and a filter positioning ring (4) is arranged between the ultra-narrow band filter (5) and the pressing ring (3) to ensure that the ultra-narrow band filter (5) is not contacted with the main frame (11);
the first sealing light window component (2) and the second sealing light window component (9) are respectively fixed on the end surfaces of two ends of a through hole of the main frame (11), the two end surfaces of the through hole of the main frame (11) are provided with sealing grooves along the circumferential direction, and sealing connection is realized through sealing rings (8) arranged in the sealing grooves; the first sealing light window component (2) consists of a sealing light window (2-1) and a light window bracket (2-2), wherein a stepped through hole and a plurality of fixing holes are formed in the end face of the light window bracket (2-2), the sealing light window (2-1) is fixed on the stepped surface of the stepped through hole in a radial glue filling mode, a plurality of screws are arranged in one-to-one correspondence with the fixing holes, and the light window bracket (2-2) is fixed on the end face of the main frame (11); the second sealing light window component (9) consists of a sealing light window (9-1), a light window bracket (9-2) and two temperature sensors (9-3), wherein a stepped through hole and a plurality of fixing holes are formed in the end face of the light window bracket (9-2), the sealing light window (9-1) is fixed on the stepped surface of the stepped through hole in a radial glue filling mode, a plurality of screws are arranged in one-to-one correspondence with the fixing holes, and the light window bracket (9-2) is fixed on the end face of the main frame (11); the two temperature sensors (9-3) are adhered to through holes on the end face of the optical window bracket (9-2) in a glue filling mode, and the two through holes are close to the outer edge of the sealed optical window (9-1);
the two thermoelectric coolers (13) are respectively fixed on two opposite side walls of the main frame (11) through a first heat sink component (1) and a second heat sink component (14); the two heating plates (7) are respectively fixed on the other two opposite side walls of the main frame (11) through two heating plate fixing plates (12).
2. The wide temperature range, accurate temperature control ultra-narrow band filter temperature control configuration of claim 1, wherein: the pressing ring (3) is of a circular ring structure, external threads are arranged on the outer peripheral surface of the pressing ring, and the pressing ring is installed in a through hole of the main frame (11) through threads; and a limit structure is arranged at the installation position of the optical filter positioning ring (4) to ensure that the optical filter positioning ring (4) does not rotate when the pressing ring (3) is screwed.
3. The wide temperature range, accurate temperature control ultra-narrow band filter temperature control configuration of claim 1, wherein: the optical filter positioning ring (4) is of a circular ring structure with a radial section L, and one end of the optical filter positioning ring is sleeved on the outer peripheral surface of the ultra-narrow band optical filter (5); the other end is attached to the outer edge of one side end face of the ultra-narrow band filter (5) and is positioned between the ultra-narrow band filter (5) and the pressing ring (3); the structure can isolate the ultra-narrow band filter (5) from the main frame (11).
4. The wide temperature range, accurate temperature control ultra-narrow band filter temperature control configuration of claim 1, wherein: the main frame (11) is made of copper, aluminum alloy or aluminum-based silicon carbide material.
5. The wide temperature range, accurate temperature control ultra-narrow band filter temperature control configuration of claim 1, wherein: the heat-insulating device further comprises heat-insulating covers (6), and the two heat-insulating covers (6) are fixedly connected to two side surfaces of the main frame (11) on which the heating plates (7) are arranged through screws.
6. The wide temperature range, accurate temperature control ultra-narrow band filter temperature control configuration of claim 1, wherein: the optical filter heat insulation pad (10) and the optical filter positioning ring (4) are made of titanium alloy or ceramic materials.
7. A method for adjusting the temperature control configuration of an ultra-narrow band filter with wide temperature range and accurate temperature control according to any one of claims 1-6, which is characterized by comprising the following steps:
step 1: placing the sealed light window (2-1) into a groove of the light window bracket (2-2), radially pouring glue, bonding, standing for 24 hours and solidifying;
step 2: placing the sealed light window (9-1) into a groove of the light window bracket (9-2), bonding in a radial glue filling mode, bonding the two temperature sensors (9-3) into a through hole of the light window bracket (9-2) in a glue filling mode, and standing for 24 hours for curing; the sequence of the step 1 and the step 2 can be interchanged;
step 3: the two heating plates (7) are respectively pressed onto two opposite mounting surfaces of the main frame (11) through two heating plate fixing plates (12) by using screws; the two heat shields (6) are respectively arranged on the two side surfaces of the main frame (11) where the heating plates (7) are arranged by using screws, and the two heating plates (7) are encapsulated;
step 4: a sealing ring (8) is arranged in a sealing groove of the main frame (11), and a second sealing light window component (9) is fixed on one side end surface of the main frame (11) by using a screw;
step 5: firstly, respectively sticking indium foil or coating heat-conducting silicone grease on two sides of two thermoelectric coolers (13); then the two opposite side walls of the main frame (11) are respectively pressed onto the first heat sink component (1) and the second heat sink component (14) and are fixed by screws;
step 6: bonding a temperature sensor at the center of the ultra-narrow band filter (5) or bonding the temperature sensor to a central hole of the process lens position; the size of the technical lens is consistent with that of the ultra-narrow band filter (5), and the technical lens is arranged in the main frame (11) instead of the ultra-narrow band filter (5) during temperature measurement;
step 7: sequentially placing the filter heat insulation pad (10), the ultra-narrow band filter (5) or the process lens and the filter positioning ring (4) on a step surface in a step-shaped through hole of the main frame (11), and then compacting and fixing the filter heat insulation pad through the pressing ring (3);
step 8: a sealing ring (8) is arranged in a sealing groove of the other end face of the main frame (11), and the first sealing light window component (2) is fixed on the other end face of the main frame (11) by using screws;
step 9: after the installation is completed, the assembly is placed in a high-low temperature box, a temperature sensor at the center hole of the ultra-narrow band filter (5) or the process lens and a temperature sensor in the second sealed optical window component (9) are calibrated, and data are recorded into temperature control circuit software;
step 10: and sequentially removing the first sealing optical window component (2), the pressing ring (3), the optical filter heat insulation pad (10), the ultra-narrow band optical filter (5) or the process lens and the optical filter positioning ring (4), removing a temperature sensor at the center of the ultra-narrow band optical filter (5), or replacing the process lens provided with the temperature sensor with the ultra-narrow band optical filter (5), and then repeating the steps 7 and 8 to finish the assembly of a final product.
8. The method for adjusting the temperature control configuration of the ultra-narrow band filter with wide temperature range and accurate temperature control according to claim 7, wherein the method is characterized in that: in the step 7, when the pressing ring (3) is screwed down, the screwing torque of the pressing ring (3) needs to be controlled, so that the surface shape change of the ultra-narrow band filter before and after screwing down is not more than 0.3λ, and the λ wavelength is 632nm.
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