Heat conduction supporting structure for lobster eye telescope detector

Abstract

The invention discloses a heat conduction supporting structure for a lobster eye telescope detector, which comprises a detector, a transition plate, a cold platform, a heat pipe and a heat dissipation plate, and is characterized in that the detector is connected with the cold platform through the transition plate, and the cold platform is connected with the heat dissipation plate through the heat pipe; the cold platform is a main heat conduction structure of the detector and is also a mounting and supporting primary reference of the detector, and the transition plate is a mounting and supporting secondary reference of the detector. The low-temperature detector has high heat conduction efficiency, and heat generated when the detector works can be efficiently transferred to the heat dissipation plate, so that the detector is kept in a low-temperature working state. Meanwhile, according to the structural characteristics of the lobster-eye telescope, the thickness of the transition plate can be set according to the focal lengths of different partitions of the optical assembly, and the requirement of the lobster-eye telescope detector for the focal plane focal length difference is met. The device is simple in overall structure and high in integration level, different transition plate thicknesses can be set according to different focal lengths, and the device has good adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of lobster eye telescopes, and in particular to a heat conductive support structure of a lobster eye telescope detector. Background Art

[0002] The Lobster Eye telescope is a new wide-field imaging system based on microchannel optics. It has attracted much attention for its ability to achieve high-sensitivity, high-resolution X-ray imaging in a wide field of view. It has broad application potential, especially in the fields of X-ray astronomical observation, space exploration, and navigation. As a key component of the Lobster Eye telescope, the performance of the detector directly affects the imaging quality and detection sensitivity of the telescope. However, the detector generates heat during operation. If the heat dissipation is not sufficient, it will not only cause the temperature to rise, but also increase the noise level, thereby reducing the detection capability of the system. In order to reduce noise, the detector usually needs to work in a low temperature environment of about -30°C, which places high demands on the heat dissipation design.

[0003] Due to process limitations, the optical lenses of the lobster eye telescope inevitably have inconsistent focal lengths during the manufacturing process. Especially in the same telescope, the focal lengths of lenses in different partitions of the optical component may differ, which requires adjusting the position of the corresponding detector according to the focal length to ensure its precise match with the optical focal plane. However, the existing detector thermal support structure is usually a fixed design that cannot flexibly adapt to these focal length differences. It can neither meet the precise positioning requirements of the detector nor be suitable for the mass design, production and manufacturing of lobster eye telescopes, which restricts the promotion and application of the system. Therefore, designing a thermal support structure that can take into account both efficient heat dissipation and focal length adaptability has become a key requirement for the development of lobster eye telescope technology. Summary of the invention

[0004] The present invention provides a heat-conducting support structure for a lobster-eye telescope detector, which achieves high thermal conductivity and meets the requirements of the focal plane focal length difference of the lobster-eye telescope detector. The optical-mechanical thermal coupling design meets the lightweight trend of aerospace products and improves the design, production and manufacturing efficiency of lobster-eye telescopes with different focal lengths.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A heat-conducting support structure for a lobster-eye telescope detector includes a detector, a transition plate, a cold platform, a heat pipe and a heat sink; the lobster-eye telescope includes multiple detectors, each detector is equipped with a transition plate, and the detector is mounted on the transition plate; all transition plates are mounted on a cold platform. The cold platform is connected to the heat sink through a heat pipe, and the heat generated by the detector when working is transferred to the cold platform through the transition plate, and then transferred to the heat sink through the heat pipe for heat dissipation; the cold platform is the primary reference of the detector installation support, providing an angle reference for the detector installation; the transition plate is the secondary reference of the detector installation support, providing a position reference for the detector installation.

[0007] Furthermore, the transition plate is a heat-conducting metal block; the transition plate is provided with interfaces for connecting to the detector and the cold platform respectively; the upper surface of the transition plate is connected to the detector, and the lower surface is connected to the cold platform; the thickness of the transition plate depends on the corresponding focal length of the detector installed on it in the lobster eye telescope.

[0008] Furthermore, the shell of the cold platform is a heat-conducting metal and is filled with a heat-conducting medium; the upper surface of the cold platform is provided with a transition plate mounting surface and an interface connected to the transition plate; all transition plate mounting surfaces have the same shape, all transition plate mounting surfaces have the same angle with the central optical axis of the lobster eye telescope, and all transition plate mounting surfaces are symmetrical around the central optical axis of the lobster eye telescope.

[0009] Furthermore, the detector is composed of a detector chip, a ceramic package and a circuit board. The detector chip is located inside the ceramic package. There are pins on the back of the ceramic package for outputting the signal of the detector chip. The ceramic package is fixed to the circuit board by pin welding. There is an interface connected to the transition board on the circuit board. There are bosses and grooves on the upper surface of the transition board. The bosses are used to fit tightly against the back of the ceramic package of the detector, and the grooves are used to prevent the pins on the back of the ceramic package from contacting the transition board.

[0010] Furthermore, when the detector is mounted on the transition plate, thermally conductive silicone rubber is filled between the detector's circuit board and the transition plate, and a thermally conductive gasket is provided in the gap between the detector's ceramic package back and the boss of the transition plate and filled with thermally conductive silicone rubber.

[0011] Furthermore, when the transition plate is installed on the cold platform, a thin indium sheet is placed between the transition plate and the transition plate installation surface of the cold platform to increase the contact area.

[0012] Furthermore, when the detector is mounted on the transition plate, a thermally conductive insulating pad is filled in the groove of the transition plate to prevent the pins on the back of the ceramic package from contacting the transition plate and causing a short circuit.

[0013] Furthermore, the focal lengths corresponding to different detectors in the same lobster-eye telescope may be different, and the thicknesses of the transition plates corresponding to the detectors may be different accordingly.

[0014] In the above technical solution, the present invention provides a heat-conducting support structure for a lobster-eye telescope detector, which has the following beneficial effects:

[0015] (1) It has high thermal conductivity, which can efficiently transfer the heat generated by the detector when it is working to the heat sink, so that the detector can maintain a low-temperature working state;

[0016] (2) According to the structural characteristics of the lobster-eye telescope, the thickness of the corresponding transition plate can be set according to the different focal lengths corresponding to different detectors, which meets the requirements of the focal length difference of the lobster-eye telescope detector corresponding to the focal plane and realizes high-precision support for the lobster-eye telescope detector;

[0017] (3) The overall structure is simple and highly integrated. Different transition plate thicknesses can be set for different focal lengths, which has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a heat-conducting support structure for a lobster-eye telescope detector of the present invention;

[0019] Figure 2 is a schematic diagram of a detector of the present invention;

[0020] Figure 3 is a schematic diagram of a transition plate of the present invention;

[0021] Figure 4 Schematic diagram of the cold platform of the present invention.

[0022] Description of reference numerals:

[0023] 101-detector; 102-transition plate; 103-cold platform; 104-heat pipe; 105-heat sink; 201-detector chip; 202-ceramic package; 203-circuit board; 204-pin; 301-boss; 302-groove; 303-detector connection interface; 304-cold platform connection interface; 401-transition plate mounting surface; 402-working fluid storage bin. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted.

[0026] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] The heat-conducting support structure for the lobster-eye telescope detector described in this embodiment is as shown in the attached Figure 1 As shown, it includes a detector 101, a transition plate 102, a cold platform 103, a heat pipe 104 and a heat sink 105. The transition plate 102 is mounted on the cold platform 103, the detector 101 is mounted on the transition plate 102, the cold platform 103 is connected to the heat sink 105 through the heat pipe 104, and the heat generated by the detector 101 when working is transferred to the cold platform 103 through the transition plate 102, and then transferred to the heat sink 105 through the heat pipe 104 for heat dissipation.

[0028] The cold platform 103 is the primary reference of the mounting support of the detector 101 and provides an angle reference for the mounting of the detector 101 ; the transition plate 102 is the secondary reference of the mounting support of the detector 101 and provides a position reference for the mounting of the detector 101 .

[0029] The lobster eye telescope described in this embodiment includes four detectors 101 , which are installed on the same cold platform 103 through respective matching transition plates 102 , and the cold platform 103 is connected to the heat sink 105 through two heat pipes 104 .

[0030] The detector 101 described in this embodiment is as shown in the attached Figure 2 As shown, it is composed of a detector chip 201, a ceramic package 202 and a circuit board 203. The detector chip 201 is located inside the ceramic package 202. There are pins 204 on the back of the ceramic package 202 for outputting the signal of the detector chip 201. The ceramic package 202 is welded and fixed on the circuit board 203 by the pins 204. There is an interface on the circuit board 203 that is connected to the transition plate 102. In this embodiment, the interface is a through hole.

[0031] The transition plate 102 described in this embodiment is a heat-conducting metal block made of metal aluminum. Figure 3As shown. The upper surface of the transition plate 102 is connected to the detector 101, and the lower surface is connected to the cold platform 103. There are three bosses 301 and two grooves 302 on the upper surface of the transition plate 102. The bosses 301 are used to fit tightly against the back of the ceramic package 202 of the detector 101, and the grooves 302 are used to prevent the pins 204 on the back of the ceramic package 202 from contacting the transition plate 102. The transition plate 102 is provided with a detector connection interface 303 and a cold platform connection interface 304. In this embodiment, the detector connection interface 303 is a threaded hole, and the cold platform connection interface 304 is a through hole. During installation, the bolts penetrate the through holes on the circuit board 203 and are threadedly connected to the detector connection interface 303, thereby realizing the connection between the transition plate 102 and the circuit board 203 of the detector 101. At the same time, an interface for connecting with the transition plate 102 is provided on the upper surface of the cold platform, and the interface is a threaded hole; during installation, the bolt passes through the cold platform connection interface 304 and is threadedly connected with the threaded hole on the upper surface of the cold platform 103, thereby realizing the connection between the transition plate 102 and the cold platform 103.

[0032] The shell of the cold platform 103 described in this embodiment is a heat-conducting metal, and the material is metal aluminum. Figure 4 The upper surface of the cold platform 103 has four transition plate mounting surfaces 401 corresponding to the four transition plates 102. The back of the cold platform 103 has a working medium storage bin 402 filled with heat-conducting working medium.

[0033] like Figure 4 As shown, the cold platform 103 described in this embodiment serves as a primary reference for the installation support of the detector 101. The four transition plate mounting surfaces 401 on the cold platform 103 have the same appearance. The angles between the four transition plate mounting surfaces 401 and the central optical axis of the lobster eye telescope are all 6.7°. The four transition plate mounting surfaces 401 are symmetrical around the central optical axis of the lobster eye telescope. The transition plate mounting surfaces 401 provide an angular reference for the installation of the detector 101.

[0034] The transition plate 102 described in this embodiment serves as a secondary reference for the mounting support of the detector. Its thickness depends on the focal length of the detector 101 mounted thereon in the lobster eye telescope. The focal lengths corresponding to different detectors in the same lobster eye telescope may be different, and the thickness of the transition plate corresponding to the detector may be different accordingly. In this embodiment, the lobster eye telescope optical system has four partitions corresponding to four detectors 101. The focal lengths of the four partitions are 375mm, 376mm, 374mm, and 376.5mm, respectively. The corresponding thicknesses of the transition plate 102 are 10mm, 9mm, 11mm, and 8.5mm, respectively. The thickness of the transition plate 102 is inversely proportional to the focal length. For different lobster eye telescopes, when designing the heat conductive support structure of their detectors, the same cold platform 103 design can be used to modify the thickness of the transition plate 102 according to the focal length difference of the optical system.

[0035] In order to increase the thermal conductivity efficiency, when the detector 101 is installed on the transition plate 102, the contact surface between the circuit board 203 of the detector 101 and the transition plate 102 described in this embodiment is filled with thermal conductive silicone rubber, and the gap between the back of the ceramic package 202 of the detector 101 and the boss 301 of the transition plate 102 is provided with a thermal conductive gasket and filled with thermal conductive silicone rubber.

[0036] At the same time, the groove 302 of the transition plate 102 is filled with a thermally conductive insulating pad, which is used to prevent the pins 204 on the back of the ceramic package 202 from contacting the transition plate 102 made of metal material and causing a short circuit.

[0037] When the transition plate 102 described in this embodiment is installed on the cold platform 103, a thin indium sheet is placed between the transition plate 102 and the transition plate installation surface 401 of the cold platform 103. The thin indium sheet is used to increase the contact area and improve the thermal conductivity.

[0038] This embodiment improves the thermal conductivity of the overall structure through a thermal chain composed of thermally conductive metal, thermally conductive silicone rubber, thermally conductive gaskets, and thermally conductive working fluids, and can efficiently conduct the heat generated when the detector is working. The proposed thermal conductive support structure, based on the characteristics of the optical system of the lobster eye telescope, provides a high-precision, high-integration, and high-interchangeability support benchmark for the focal plane detector while conducting heat. Through the coupling design of thermal, optical, and mechanical, efficient thermal conduction and high-precision support for the detection of the lobster eye telescope are achieved.

[0039] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A heat-conducting support structure for a lobster-eye telescope detector, characterized in that: The lobster eye telescope comprises a detector, a transition plate, a cold platform, a heat pipe and a heat sink. The lobster eye telescope comprises a plurality of detectors, each detector is equipped with a transition plate, and the detector is mounted on the transition plate; all transition plates are mounted on a cold platform; the cold platform is connected to the heat sink through a heat pipe, and the heat generated by the detector when working is transferred to the cold platform through the transition plate, and then transferred to the heat sink through the heat pipe for heat dissipation; The cold platform is the primary reference for the detector installation support, providing an angle reference for the detector installation; The transition plate is the secondary reference of the detector mounting support and provides a position reference for the detector installation.

2. A heat-conducting support structure for a lobster-eye telescope detector according to claim 1, characterized in that: The transition plate is a heat-conducting metal block; interfaces for connecting to the detector and the cold platform are provided on the transition plate; the upper surface of the transition plate is connected to the detector, and the lower surface is connected to the cold platform; the thickness of the transition plate depends on the corresponding focal length of the detector installed on it in the lobster eye telescope.

3. A heat-conducting support structure for a lobster-eye telescope detector according to claim 2, characterized in that: The shell of the cold platform is a heat-conducting metal and is filled with a heat-conducting medium; the upper surface of the cold platform is provided with a transition plate mounting surface and an interface connected to the transition plate; all transition plate mounting surfaces have the same shape, all transition plate mounting surfaces have the same angle with the central optical axis of the lobster eye telescope, and all transition plate mounting surfaces are symmetrical around the central optical axis of the lobster eye telescope.

4. The heat-conducting support structure for a lobster-eye telescope detector according to claim 3, characterized in that: The detector is composed of a detector chip, a ceramic package and a circuit board. The detector chip is located inside the ceramic package. There are pins on the back of the ceramic package for outputting the signal of the detector chip. The ceramic package is fixed to the circuit board by pin welding. There is an interface connected to the transition board on the circuit board. There are bosses and grooves on the upper surface of the transition board. The bosses are used to fit tightly against the back of the ceramic package of the detector, and the grooves are used to prevent the pins on the back of the ceramic package from contacting the transition board.

5. The heat-conducting support structure for a lobster-eye telescope detector according to claim 4, characterized in that: When the detector is mounted on the transition plate, the space between the detector circuit board and the transition plate is filled with thermally conductive silicone rubber, and the gap between the back of the detector ceramic package and the boss of the transition plate is provided with a thermally conductive gasket and filled with thermally conductive silicone rubber.

6. The heat-conducting support structure for a lobster-eye telescope detector according to claim 5, characterized in that: When the transition plate is installed on the cold platform, a thin indium sheet is padded between the transition plate and the transition plate installation surface of the cold platform to increase the contact area.

7. The heat-conducting support structure for a lobster-eye telescope detector according to claim 6, characterized in that: When the detector is mounted on the transition plate, the groove of the transition plate is filled with a thermally conductive insulating pad to prevent the pins on the back of the ceramic package from contacting the transition plate and causing a short circuit.

8. The heat-conducting support structure for a lobster-eye telescope detector according to claim 2, characterized in that: The focal lengths corresponding to different detectors in the same lobster-eye telescope may be different, and the thickness of the transition plate corresponding to the detector may be different accordingly.

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