A pogopin module and an optical engine placement fixture

Abstract

This invention discloses a pogopin module and an optical engine placement fixture, belonging to the field of AR glasses. The pogopin module includes a limiting block with an internal receiving cavity. Both ends of the receiving cavity are open, and multiple pins are installed inside the receiving cavity for connecting to the connector of the optical engine. One end of an adapter cable covers the lower end of the receiving cavity and is electrically connected to the multiple pins. One end of a positioning block is slidably connected inside the receiving cavity, while the other end protrudes from the upper end of the receiving cavity. The positioning block has a first positioning groove for the optical engine connector to extend into, and the bottom wall of the first positioning groove has multiple first positioning holes for the multiple pins to slide through. A first elastic element is installed inside the receiving cavity and connected to the positioning block. The first elastic element is used to push the positioning block away from the adapter cable. In this embodiment, the optical engine and pogopin module are easy to assemble and disassemble, and the optical engine is stably installed.

Description

Technical Field

[0001] This invention relates to the field of AR glasses technology, and in particular to a pogopin module and an optomechanical placement fixture. Background Technology

[0002] In existing technologies, AR glasses imaging aims to achieve a balance between efficiency, dispersion, and mass production feasibility by combining single-layer ultrathin holographic waveguides and full-color MicroLED display technology. This requires using optical wave coupling analysis optimization algorithms and a unique full-color micro-display engine to achieve both thinness and high-brightness full-color display. The high-precision assembly of the waveguide and optical engine is a major challenge, especially since AR glasses are designed to be similar in size to ordinary glasses for ease of use, while incorporating numerous microelectronic hardware components, resulting in extremely limited space for the optical engine. Positioning, fixing, and connecting the optical engine within this confined space becomes a significant hurdle. The optical engine's connector connects to the pogopin connector for signal transmission. Connecting the optical engine connector to the pogopin connector typically requires external force to press it firmly, and disassembling the connector requires external force, leading to low assembly and disassembly efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a pogopin module and an optomechanical placement fixture.

[0004] A pogopin module according to an embodiment of the present invention includes: The limiting block has an internal receiving cavity, and both ends of the receiving cavity are open along the thickness direction of the limiting block. Multiple pins are installed within the accommodating cavity, and the multiple pins are used to connect to the connector of the optical engine to electrically conduct the optical engine; An adapter cable is provided at one end to cover the lower end of the accommodating cavity, and the adapter cable is electrically connected to a plurality of the pins. The positioning block has one end slidably connected to the accommodating cavity along the thickness direction of the limiting block, and the other end protrudes along the upper end of the accommodating cavity. The positioning block is provided with a first positioning groove for the connector of the optical machine to extend into. The bottom wall of the first positioning groove is provided with a plurality of first positioning holes for the plurality of the plate needles to slide through. A first elastic element is installed in the accommodating cavity. The first elastic element is connected to the positioning block and is used to push the positioning block away from the adapter cable.

[0005] A pogopin module according to an embodiment of the present invention has at least the following beneficial effects: When the optical engine is connected to the pogopin module, the connector of the optical engine first extends into the first positioning groove. When the connector of the optical engine is pressed by external force, the connector of the optical engine and the positioning block move together toward the adapter cable. The positioning block squeezes the first elastic element, and the connector of the optical engine conducts with multiple pins. When the optical engine and the pogopin module are disconnected, the external force pressed on the connector is removed. The first elastic element pushes the positioning block away from the adapter cable, causing the connector of the optical engine to separate from the pins. The optical engine and the pogopin module are easy to assemble and disassemble.

[0006] According to some embodiments of the present invention, the pogopin module further includes a limiting member, wherein the limiting block is provided with a connecting hole communicating with the receiving cavity and for the limiting member to extend into, and the positioning block is provided with a slot for the limiting member to extend into, the limiting member being slidably connected in the slot along the thickness direction of the limiting block, and the limiting member being used to limit the movement range of the positioning block.

[0007] According to some embodiments of the present invention, the film pin includes a connecting portion and an elastic portion connected together. The connecting portion extends into the first positioning hole, and the connecting portion is provided with a clamping groove for the insertion of a connector of the optical engine. The elastic portion is elastic along the opening direction of the receiving cavity. The elastic deformation capability of the elastic portion along the opening direction of the receiving cavity can automatically compensate for the manufacturing tolerances between the optical engine and the film pin, thereby improving the yield rate.

[0008] According to some embodiments of the present invention, the elastic part includes two elastic strips, which are spaced apart along the width direction of the needle, and both elastic strips are S-shaped. The S-shaped structure achieves elasticity through bending, eliminating the need for additional thickening or the use of highly elastic materials, thus reducing raw material costs.

[0009] According to some embodiments of the present invention, the pogopin module further includes a mounting plate and a mounting block. The mounting plate is installed between the adapter cable and the limiting block. The mounting plate is provided with a second positioning groove for one end of the mounting block to extend into. The bottom wall of the second positioning groove is provided with a second positioning hole for multiple pins to pass through. The other end of the mounting block extends into the receiving cavity. The mounting block is provided with multiple third positioning grooves for multiple pins to extend into.

[0010] The positioning block is provided with a positioning protrusion, which is located near the first positioning groove and at one end of the first positioning groove along the length direction of the limiting block. The positioning protrusion is used to position the back plate of the connector of the optical machine.

[0011] An optomechanical placement fixture according to an embodiment of the present invention includes: The support base is used for placing the optical machine at the upper end. The support base is provided with a negative pressure channel. One end of the negative pressure channel extends to the middle of the upper end of the support base, and the other end of the negative pressure channel is used for connecting an external air extraction device. The pogopin module is mounted on the support base; A pressure block is hinged to the fixed base in the middle, with one end of the pressure block located close to the pogopin module; A driving mechanism includes a driving component and a toggle member. The toggle member is connected to the output end of the driving component. The driving component moves the other end of the pressure block through the toggle member to bring one end of the pressure block closer to or away from the support base.

[0012] An optomechanical placement fixture according to an embodiment of the present invention has at least the following beneficial effects: When the optical engine is loaded, the negative pressure channel generates negative pressure through the air extraction device, adsorbing the optical engine onto the upper end of the support base. The optical engine is installed stably. The drive mechanism moves the other end of the pressure block, bringing one end of the pressure block closer to the support base. The pressure block presses the connector of the optical engine, and the connector of the optical engine moves together with the positioning block toward the adapter cable. The positioning block squeezes the first elastic element, and the connector of the optical engine is connected to multiple pins. When the optical engine is unloaded, the drive mechanism moves the other end of the pressure block, moving one end of the pressure block away from the support base. The first elastic element pushes the positioning block away from the adapter cable, causing the connector of the optical engine to separate from the pins. The optical engine and the pogopin module are easy to assemble and disassemble.

[0013] According to some embodiments of the present invention, the optomechanical placement fixture further includes a second elastic member, the second elastic member connecting the support base and the pressure block, the second elastic member being used to drive one end of the pressure block toward the support base.

[0014] According to some embodiments of the present invention, the upper end of the support base is provided with an annular sealing groove, and a sealing ring is provided in the annular sealing groove. The sealing ring is used to abut against the optical machine, and one end of the negative pressure channel is located inside the annular sealing groove.

[0015] According to some embodiments of the present invention, the upper end of the support base is provided with a first stop, a second stop, and a third stop for restricting the movement of the optical engine. The pogopin module is installed in the middle of the support base. The length direction of the pogopin module is consistent with the length direction of the support base. The first stop is arranged along the thickness direction of the pogopin module and is located on the side of the support base opposite to the pogopin module. The second stop and the third stop are spaced apart along the width direction of the pogopin module.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the pogopin module according to an embodiment of the present invention; Figure 2 This is an exploded view of the pogopin module according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the pins of the pogopin module according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an optical engine; Figure 5 This is a schematic diagram of the structure of the optical engine placement fixture according to an embodiment of the present invention when placing the optical engine; Figure 6 This is a cross-sectional view of the support base of the optomechanical placement fixture according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the optomechanical placement fixture according to an embodiment of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0018] Icon labels: 100. Pogopin module; 110. Limiting block; 111. Receiving cavity; 112. Connecting hole; 120. Pin; 121. Connecting part; 1211. Clamping groove; 122. Elastic part; 1221. Elastic strip; 130. Adapter cable; 140. Positioning block; 141. First positioning groove; 1411. First positioning hole; 142. Slot; 143. Positioning protrusion; 150. First elastic element; 160. Limiting element; 170. Mounting plate; 171. Second positioning groove; 172. Second positioning hole; 180. Mounting block; 181. Third positioning groove; 200, Support base; 210, Negative pressure channel; 220, Annular sealing groove; 221, Sealing ring; 230, First retaining edge; 240, Second retaining edge; 250, Third retaining edge; 300. Pressure block; 310. Second elastic element; 400. Drive mechanism; 410. Drive assembly; 420. Actuating element; 500, Optical engine; 510, Connector; 520, Backplane. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this 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," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] See Figure 4 , Figure 4 The structure is an optical engine 500, which has a bendable ribbon cable. One end of the bendable ribbon cable is connected to a connector 510. A back plate 520 is provided on the connector 510. The back plate 520 can strengthen the strength of the connector 510 and facilitate external force to press the connector 510 onto the pogopin module 100.

[0023] Please see Figure 1 , Figure 2 and Figure 3A pogopin module 100 according to an embodiment of the present invention includes a limiting block 110, a plurality of pins 120, an adapter cable 130, a positioning block 140, and a first elastic member 150. The limiting block 110 has an internal receiving cavity 111, which is open at both ends along its thickness direction. The plurality of pins 120 are installed within the receiving cavity 111 and are used to connect to a connector 510 of an optomechanism 500 to electrically connect the optomechanism 500. One end of the adapter cable 130 covers the lower end of the receiving cavity 111, and the adapter cable 130 is electrically connected to the plurality of pins 120. One end of the positioning block 140 is slidably connected to the receiving cavity 111 along the thickness direction of the limiting block 110, and the other end protrudes along the upper end of the receiving cavity 111. The positioning block 140 is provided with a first positioning groove 141, and the connector 510 of the optical engine 500 can be positioned and inserted into the first positioning groove 141. The bottom wall of the first positioning groove 141 is provided with a plurality of first positioning holes 1411, and a plurality of pins 120 slide through the plurality of first positioning holes 1411. The first elastic element 150 is installed in the receiving cavity 111 and is connected to the positioning block 140. The first elastic element 150 is used to push the positioning block 140 away from the adapter cable 130. The first elastic element 150 is a spring.

[0024] When the optical engine 500 is connected to the pogopin module 100, the connector 510 of the optical engine 500 first extends into the first positioning groove 141. When the external force is used to press the connector 510 of the optical engine 500, the connector 510 of the optical engine 500 and the positioning block 140 move together toward the adapter cable 130. The positioning block 140 squeezes the first elastic member 150, and the connector 510 of the optical engine 500 is connected to the multiple pins 120. When the optical engine 500 and the pogopin module 100 are unhooked, the external force pressed on the connector 510 is eliminated, the first elastic member 150 pushes the positioning block 140 away from the adapter cable 130, and drives the connector 510 of the optical engine 500 to separate from the pins 120. The optical engine 500 and the pogopin module 100 are easy to assemble and disassemble.

[0025] In some embodiments, see Figure 1 and Figure 2The pogopin module 100 also includes a limiting member 160. A connecting hole 112 is provided on the limiting block 110, which communicates with the receiving cavity 111. The limiting member 160 extends into the receiving cavity 111 through the connecting hole 112. A slot 142 is provided on the positioning block 140, and the limiting member 160 extends into the slot 142. The limiting member 160 is slidably connected to the slot 142 along the thickness direction of the limiting block 110, thus limiting the movement range of the positioning block 140. The limiting member 160 is a pin. During installation, the first elastic member 150 is placed in the receiving cavity 111, and then the positioning block 140 is pressed into the receiving cavity 111. The limiting member 160 extends into the slot 142 along the connecting hole 112. The limiting member 160 can limit the movement range of the positioning block 140 in the receiving cavity 111, and can also limit the positioning block 140 from coming out of the receiving cavity 111.

[0026] In some embodiments, see Figure 2 and Figure 4 The pin 120 includes a connecting portion 121 and an elastic portion 122 connected together. The connecting portion 121 extends into a first positioning hole 1411, and a clamping groove 1211 is provided on the connecting portion 121 for the connector 510 of the optical engine 500 to extend into. The elastic portion 122 is elastic along the opening direction of the receiving cavity 111. The structure of the clamping groove 1211 and the embedded cooperation of the connector 510 of the optical engine 500 form a mechanical interlock, significantly improving the connection strength. The elastic deformation capability of the elastic portion 122 along the opening direction of the receiving cavity 111 can automatically compensate for the manufacturing tolerances between the optical engine 500 and the pin 120, improving the yield rate.

[0027] In some embodiments, see Figure 2 and Figure 4 The elastic part 122 includes two elastic strips 1221, which are spaced apart along the width direction of the needle 120. Both elastic strips 1221 are S-shaped. The S-shaped structure achieves elasticity through bending and forming, eliminating the need for additional thickening or the use of highly elastic materials, thus reducing raw material costs.

[0028] In some embodiments, see Figure 1 and Figure 2The pogopin module 100 also includes a mounting plate 170 and a mounting block 180. The mounting plate 170 is installed between the adapter cable 130 and the limiting block 110. The mounting plate 170 is provided with a second positioning groove 171. One end of the mounting block 180 extends into the second positioning groove 171. The bottom wall of the second positioning groove 171 is provided with a second positioning hole 172. Multiple pins 120 pass through the second positioning hole 172 and connect to the adapter cable 130. The other end of the mounting block 180 extends into the receiving cavity 111. The mounting block 180 is provided with multiple third positioning grooves 181. The pins 120 extend into the third positioning grooves 181, and the mounting block 180 separates the multiple pins 120. The mounting plate 170 fixes one end of the mounting block 180 through the second positioning groove 171. The second positioning hole 172 on the bottom wall further constrains the vertical position of the pins 120, forming a double vertical positioning to prevent the pins 120 from shifting due to vibration or external force. The third positioning groove 181 at the other end of the mounting block 180 divides and fixes the pins 120 in the horizontal direction, ensuring that each pin 120 is positioned independently and preventing adjacent pins 120 from short-circuiting or interfering with signals.

[0029] In some embodiments, see Figure 1 and Figure 2 The positioning block 140 is provided with a positioning protrusion 143, which is located near the first positioning groove 141 and at one end of the first positioning groove 141 along the length direction of the limiting block 110. The positioning protrusion 143 is used to position the back plate 520 of the connector 510 of the optomechanical 500. The cooperation between the positioning protrusion 143 and the first positioning groove 141 realizes the precise positioning, stable contact and efficient assembly of the connector 510 of the optomechanical 500.

[0030] See Figure 1 , Figure 5 and Figure 6 According to an embodiment of the present invention, a fixture for placing an optical engine 500 includes a support base 200, a pogopin module 100, a pressure block 300, and a drive mechanism 400. The upper end of the support base 200 is used for placing the optical engine 500. A negative pressure channel 210 is provided inside the support base 200, with one end extending to the middle of the upper end of the support base 200 and the other end used for connecting an external vacuum device. The pogopin module 100 is mounted on the support base 200, and the middle of the pressure block 300 is hinged to a fixed base, with one end of the pressure block 300 positioned close to the pogopin module 100. The drive mechanism 400 includes a drive assembly 410 and a toggle member 420. The toggle member 420 is connected to the output end of the drive assembly 410, and the drive assembly 410, through the toggle member 420, moves the other end of the pressure block 300 to bring it closer to or away from the support base 200.

[0031] When the optical engine 500 is loaded, the negative pressure channel 210 generates negative pressure through the air extraction device, adsorbing the optical engine 500 onto the upper end of the support base 200. With the optical engine 500 stably installed, the drive mechanism 400 moves the other end of the pressure block 300, bringing one end of the pressure block 300 close to the support base 200. The pressure block 300 presses down on the connector 510 of the optical engine 500. The connector 510 of the optical engine 500, together with the positioning block 140, moves towards the adapter cable 130. When the first elastic element 150 is squeezed, the connector 510 of the optical engine 500 is connected to multiple pins 120. When the optical engine 500 is feeding, the drive mechanism 400 moves the other end of the pressure block 300, and one end of the pressure block 300 moves away from the support base 200. The first elastic element 150 pushes the positioning block 140 away from the adapter cable 130, causing the connector 510 of the optical engine 500 to separate from the pins 120. The optical engine 500 and the pogopin module 100 are easy to assemble and disassemble.

[0032] In some embodiments, see Figure 5 and Figure 7 The fixture for placing the optical engine 500 also includes a second elastic element 310, which is a spring. The second elastic element 310 connects the support base 200 and the pressure block 300. The second elastic element 310 is used to drive one end of the pressure block 300 towards the support base 200. The second elastic element 310 connects the support base 200 and the pressure block 300, so that one end of the pressure block 300 presses against the back plate 520 of the optical engine 500. This ensures a stable connection between the connector 510 of the optical engine 500 and the pogopin module 100 even if the driving force of the drive mechanism 400 fails.

[0033] In some embodiments, see Figure 6 , Figure 7 and Figure 8 The upper end of the support base 200 is provided with an annular sealing groove 220, and a sealing ring 221 is provided inside the annular sealing groove 220. The sealing ring 221 is used to abut against the optical engine 500, and one end of the negative pressure channel 210 is located inside the annular sealing groove 220. The sealing ring 221 inside the annular sealing groove 220 is tightly fitted with the bottom surface of the optical engine 500 to form a closed negative pressure chamber, which precisely limits the adsorption range of the negative pressure channel 210 to the area inside the sealing ring 221. Compared with an unsealed structure, the closed chamber can quickly establish a vacuum, and the adsorption force is more concentrated, avoiding displacement of the optical engine 500 or insufficient adsorption force due to air leakage.

[0034] In some embodiments, see Figure 6 , Figure 7 and Figure 8The upper end of the support base 200 is provided with a first stop 230, a second stop 240, and a third stop 250, which can restrict the movement of the optical engine 500. A pogopin module 100 is installed in the middle of the support base 200, with its length direction aligned with that of the support base 200. The first stop 230 is positioned along the thickness direction of the pogopin module 100 and located on the support base 200 on the side opposite to the pogopin module 100. The second stop 240 and the third stop 250 are spaced apart along the width direction of the pogopin module 100. The first stop 230, second stop 240, and third stop 250 can position the optical engine 500, facilitating its quick placement on the top of the support base 200. The collaborative design of the first guard 230, the second guard 240, the third guard 250, and the pogopin module 100 forms a foolproof structure. The first guard 230, the second guard 240, and the third guard 250 restrict the three positions of the optical engine 500, allowing the bendable ribbon cable on the optical engine 500 to bend downwards along the gap area. The connector 510 at the end of the bendable ribbon cable can be smoothly connected to the pogopin module 100, improving the connection stability of the optical engine 500.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pogopin module for connecting a connector of an optical engine, characterized by, include: The limiting block has an internal receiving cavity, and both ends of the receiving cavity are open along the thickness direction of the limiting block. Multiple pins are installed within the accommodating cavity, and the multiple pins are used to connect to the connector of the optical engine to electrically conduct the optical engine; An adapter cable is provided at one end to cover the lower end of the accommodating cavity, and the adapter cable is electrically connected to a plurality of the pins. The positioning block has one end slidably connected to the accommodating cavity along the thickness direction of the limiting block, and the other end protrudes along the upper end of the accommodating cavity. The positioning block is provided with a first positioning groove for the connector of the optical machine to extend into. The bottom wall of the first positioning groove is provided with a plurality of first positioning holes for the plurality of the plate needles to slide through. A first elastic element is installed in the accommodating cavity. The first elastic element is connected to the positioning block and is used to push the positioning block away from the adapter cable.

2. The pogopin module of claim 1, wherein, It also includes a limiting member, wherein the limiting block is provided with a connecting hole that communicates with the receiving cavity and is used for the limiting member to extend into, and the positioning block is provided with a slot for the limiting member to extend into. The limiting member is slidably connected in the slot along the thickness direction of the limiting block, and the limiting member is used to limit the movement range of the positioning block.

3. The pogopin module of claim 1, wherein, The pin includes a connecting part and an elastic part connected together. The connecting part extends into the first positioning hole and is provided with a clamping groove for the connector of the optical machine to extend into. The elastic part is elastic along the opening direction of the accommodating cavity.

4. The pogopin module of claim 3, wherein, The elastic part includes two elastic strips, which are spaced apart along the width direction of the needle, and both elastic strips are S-shaped.

5. The pogopin module of claim 1, wherein, It also includes a mounting plate and a mounting block. The mounting plate is installed between the adapter cable and the limiting block. The mounting plate is provided with a second positioning groove for one end of the mounting block to extend into. The bottom wall of the second positioning groove is provided with a second positioning hole for multiple pins to pass through. The other end of the mounting block extends into the receiving cavity. The mounting block is provided with multiple third positioning grooves for multiple pins to extend into.

6. The pogopin module of claim 1, wherein, The positioning block is provided with a positioning protrusion, which is located near the first positioning groove and at one end of the first positioning groove along the length direction of the limiting block. The positioning protrusion is used to position the back plate of the connector of the optical machine.

7. An optical engine placement fixture, comprising: include: The support base is used for placing the optical machine at the upper end. The support base is provided with a negative pressure channel. One end of the negative pressure channel extends to the middle of the upper end of the support base, and the other end of the negative pressure channel is used for connecting an external air extraction device. The pogopin module as described in any one of claims 1-6 is mounted on the support base; A pressure block is hinged to the fixed base in the middle, with one end of the pressure block located close to the pogopin module; A driving mechanism includes a driving component and a toggle member. The toggle member is connected to the output end of the driving component. The driving component moves the other end of the pressure block through the toggle member to bring one end of the pressure block closer to or away from the support base.

8. The optical engine placement fixture of claim 7, wherein, It also includes a second elastic element, which connects the support base and the pressure block. The second elastic element is used to drive one end of the pressure block toward the support base.

9. The optical engine placement fixture of claim 7, wherein, The upper end of the support base is provided with an annular sealing groove, and a sealing ring is provided in the annular sealing groove. The sealing ring is used to abut against the optical machine, and one end of the negative pressure channel is located inside the annular sealing groove.

10. The optical engine placement fixture of claim 7, wherein, The upper end of the support base is provided with a first stop, a second stop, and a third stop for restricting the movement of the optical engine. The pogopin module is installed in the middle of the support base. The length direction of the pogopin module is consistent with the length direction of the support base. The first stop is arranged along the thickness direction of the pogopin module and is located on the side of the support base away from the pogopin module. The second stop and the third stop are spaced apart along the width direction of the pogopin module.

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