An adjustable parallel light tube and optical device

Abstract

The application discloses a parallel light tube with adjustable object distance and an optical device, and relates to the technical field of optical devices. The parallel light tube with adjustable object distance comprises a main mirror tube, a scale plate assembly, an objective lens assembly and a first adjusting assembly; the scale plate assembly is used for realizing light beam modulation and image presetting, and the objective lens assembly is used for projecting a light beam irradiated through the scale plate assembly; the scale plate assembly and the objective lens assembly are both inserted into the internal cavity of the main mirror tube, and the scale plate assembly is close to the inlet end of the main mirror tube, and the objective lens assembly is close to the outlet end of the main mirror tube; the scale plate assembly can move along the length direction of the main mirror tube, the peripheral wall of the main mirror tube has an adjusting port extending along the length direction of the peripheral wall, the first adjusting assembly passes through the adjusting port and is connected to the scale plate assembly, and is used for locking or unlocking the scale plate assembly; and the parallel light tube can meet the detection requirements of different object distance thermal imagers.

Description

Technical Field

[0001] This application relates to the field of optical equipment technology, and more specifically, to an adjustable object-distance collimator. Furthermore, this application also relates to an optical device comprising the aforementioned adjustable object-distance collimator. Background Technology

[0002] Detection optical equipment is a device that converts the detected image of a target object into a visual image by detecting the optical radiation of the target object and then using signal processing, photoelectric conversion and other means.

[0003] Optical equipment requires off-axis reflective collimators for focusing and testing during production and inspection. However, collimators can generally only test optical equipment with a fixed object distance, which is not conducive to continuous production of optical equipment with different object distances on the production line.

[0004] In conclusion, how to meet the detection requirements of thermal imagers with different object distances is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an adjustable object distance collimator that can meet the detection requirements of thermal imagers with different object distances.

[0006] Another object of this application is to provide an optical device including the above-described adjustable object distance collimator.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] An adjustable object distance collimator includes: a primary lens tube, a reticle assembly, an objective lens assembly, and a first adjustment assembly;

[0009] The reticle assembly is used to achieve beam modulation and image preset, and the objective lens assembly is used to project the beam emitted through the reticle assembly.

[0010] Both the reticle assembly and the objective lens assembly are inserted into the internal cavity of the main endoscope tube, with the reticle assembly located near the inlet end of the main endoscope tube and the objective lens assembly located near the outlet end of the main endoscope tube.

[0011] The reticle assembly is movable along the length of the main lens tube. The peripheral wall of the main lens tube has an adjustment port extending along its own length. The first adjustment component passes through the adjustment port and is connected to the reticle assembly for locking or unlocking the reticle assembly.

[0012] Preferably, it further includes a cooling target plate assembly and a second adjustment assembly, wherein the cooling target plate assembly is used to cool the reticle assembly;

[0013] The cooling target plate assembly is slidably inserted into the main mirror tube, and the cooling target plate assembly, the reticle assembly, and the objective lens assembly are arranged sequentially along the length of the main mirror tube;

[0014] The second adjustment component passes through the adjustment port and is connected to the cooling target plate assembly for locking or unlocking the cooling target plate assembly.

[0015] Preferably, the cooling target plate assembly includes a homogeneous cooling target plate, a semiconductor cooling chip, a thermal pad, a semiconductor cooling chip partition, a cooling assembly bracket, and a cooling fan;

[0016] The homogeneous cold target plate, the semiconductor cooling chip partition, and the cooling assembly support are arranged and fixedly connected in sequence along the length of the main mirror tube, and the homogeneous cold target plate is located on the side close to the reticle assembly.

[0017] The thermal pad is embedded in the mounting port of the semiconductor refrigeration chip partition, the semiconductor refrigeration chip is embedded in the mounting port of the homogeneous cold target plate, and the cooling fan is inserted into the mounting port of the refrigeration unit bracket.

[0018] Preferably, the peripheral wall of the main mirror tube has a wiring hole through which the power supply cables of the cooling fan and the semiconductor cooling chip pass.

[0019] Preferably, the wiring hole is configured as an elongated hole, and the wiring hole extends along the length direction of the main lens tube.

[0020] Preferably, the reticle assembly includes a reticle sliding frame and a slit reticle;

[0021] The slit reticle is fixedly connected to the reticle sliding frame, and the slit reticle is located at one end of the reticle sliding frame near the cooling target plate assembly.

[0022] Preferably, both the first adjustment assembly and the second adjustment assembly include a fastening screw and a screw washer;

[0023] The fastening screw in the first adjustment assembly passes through the adjustment port and is inserted into the reticle sliding frame. The screw washer in the first adjustment assembly is sandwiched between the outer surface of the main lens tube and the tail end of the fastening screw in the first adjustment assembly.

[0024] The fastening screw in the second adjustment assembly passes through the adjustment port and is inserted into the cooling unit bracket. The screw washer in the second adjustment assembly is sandwiched between the outer surface of the main lens tube and the tail end of the fastening screw in the second adjustment assembly.

[0025] Preferably, the objective lens assembly includes a pressure ring, a sealing ring, and a germanium lens.

[0026] The pressure ring, sealing ring, and germanium lens are arranged sequentially along the length of the main lens tube, with the pressure ring located on the side away from the reticle assembly, pressing the sealing ring against the germanium lens and the germanium lens against the main lens tube.

[0027] Preferably, it also includes a controller and a position detector, the position detector being used to detect the position of the slit reticle;

[0028] Furthermore, the position detector signal is connected to the controller, which is used to receive the position signal from the position detector and output the object distance.

[0029] An optical device comprising an adjustable object distance collimator as described in any of the preceding claims.

[0030] In this application, the main endoscope tube is used to constrain the light beam entering it. The cavity inside the main endoscope tube is the propagation channel of the light beam. The reticle assembly, objective lens assembly, and first adjustment assembly are all supported and mounted on the main endoscope tube. The reticle assembly and objective lens assembly are both located in the cavity inside the main endoscope tube, with the reticle assembly closer to the inlet side of the cavity and the objective lens assembly closer to the outlet side. An adjustment port is provided on the peripheral wall of the main endoscope tube. Part of the structure of the first adjustment assembly extends into the interior of the main endoscope tube to connect to the reticle assembly. The first adjustment assembly can be slidably inserted into the adjustment port along the length of the main endoscope tube, and the remaining structure of the first adjustment assembly remains outside the main endoscope tube. The reticle assembly is supported in the main endoscope tube by the first adjustment assembly, and the reticle assembly can be locked or released. Thus, the operator can easily adjust the position of the reticle assembly relative to the main endoscope tube by the first adjustment assembly.

[0031] In use, the light emitted by the optical system enters the main lens tube through the inlet, first passing through the light-transmitting slit of the preset shape in the reticle assembly, and then projecting the light beam into an image of the preset shape through the objective lens assembly. Thus, the adjustable object distance collimator can be used to fix focus and measure thermal imagers.

[0032] The beneficial effect is that the reticle assembly can be movably mounted on the main lens tube. By moving the position of the reticle assembly, it is possible to simulate object distances from 1 meter to infinity, which facilitates focusing and correction of thermal imaging devices with different object distances and has a wide range of applications. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 Exploded views of specific embodiments provided in this application;

[0035] Figure 2 This is a cross-sectional view of a specific embodiment provided in this application.

[0036] Figure label:

[0037] 1-Main lens tube; 11-Adjustment port; 12-Wire routing hole;

[0038] 2-Reticle assembly; 21-Reticle sliding frame; 22-Slit reticle;

[0039] 3-Objective lens assembly; 31-Pressure ring; 32-Sealing ring; 33-Germanium lens element;

[0040] 4-First adjusting assembly; 41-Fasting screw; 42-Screw washer;

[0041] 5-Cooling target plate assembly; 51-Homogeneous cold target plate; 52-Semiconductor cooling chip; 53-Thermal conductive pad; 54-Semiconductor cooling chip separator; 55-Cooling unit bracket; 56-Cooling fan;

[0042] 6-Second adjustment component. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The core of this application is to provide an adjustable object distance collimator that can meet the detection requirements of thermal imagers with different object distances. Another core aspect of this application is to provide an optical device including the aforementioned adjustable object distance collimator.

[0045] This application provides an adjustable object distance collimator, including a primary lens tube 1, a reticle assembly 2, an objective lens assembly 3, and a first adjustment assembly 4;

[0046] The reticle assembly 2 is used to achieve beam modulation and image preset, and the objective lens assembly 3 is used to project the beam emitted through the reticle assembly 2.

[0047] Both the reticle assembly 2 and the objective lens assembly 3 are inserted into the internal cavity of the main mirror tube 1, with the reticle assembly 2 being closer to the inlet end of the main mirror tube 1 and the objective lens assembly 3 being closer to the outlet end of the main mirror tube 1.

[0048] The reticle assembly 2 can move along the length of the main lens tube 1. The peripheral wall of the main lens tube 1 has an adjustment port 11 extending along its own length. The first adjustment component 4 passes through the adjustment port 11 and is connected to the reticle assembly 2 for locking or unlocking the reticle assembly 2.

[0049] refer to Figure 1 and Figure 2 For illustrative purposes, the primary mirror tube 1 is used to constrain the light beam entering it. The cavity inside the primary mirror tube 1 is the propagation channel of the light beam. The reticle assembly 2, objective lens assembly 3, and first adjustment assembly 4 are all supported and mounted on the primary mirror tube 1. The reticle assembly 2 and objective lens assembly 3 are both located in the cavity inside the primary mirror tube 1, with the reticle assembly 2 near the inlet side of the cavity and the objective lens assembly 3 near the outlet side. An adjustment port 11 is provided on the peripheral wall of the primary mirror tube 1. Preferably, the adjustment port 11 is a straight, elongated slit extending along the length of the primary mirror tube 1. A zigzag slit or similar design can be used, as long as it meets the requirement of adjusting the reticle assembly 2 along the length of the main scope tube 1. Part of the structure of the first adjustment component 4 extends into the interior of the main scope tube 1 to connect the reticle assembly 2. The first adjustment component 4 can be slidably inserted into the adjustment port 11 along the length of the main scope tube 1, and the remaining structure of the first adjustment component 4 remains outside the main scope tube 1. The reticle assembly 2 is supported in the main scope tube 1 by the first adjustment component 4, and the reticle assembly 2 can be locked or released. This allows the operator to easily adjust the position of the reticle assembly 2 relative to the main scope tube 1 through the first adjustment component 4.

[0050] In use, the light emitted by the optical system enters the main lens tube 1 through the inlet, and then passes through the light-transmitting slit of the preset shape in the reticle assembly 2. The light-transmitting slit can be a cross-shaped or a U-shaped slit, and four-bar targets of different sizes can be set around the cross-shaped slit. Then, the light beam is projected into an image of the preset shape through the objective lens assembly 3. The adjustable object distance collimator can be used to fix focus and measure thermal imagers.

[0051] The beneficial effect is that the reticle assembly 2 is movably mounted on the main lens tube 1. By moving the position of the reticle assembly 2, it is possible to simulate object distances from 1 meter to infinity, which facilitates focusing and correction of thermal imaging devices with different object distances and has a wide range of applications.

[0052] Based on the above embodiments, the adjustable object distance collimator also includes a cooling target plate assembly 5 and a second adjustment assembly 6. The cooling target plate assembly 5 is used to cool down the reticle assembly 2.

[0053] The cooling target plate assembly 5 is slidably inserted into the main mirror tube 1, and the cooling target plate assembly 5, the reticle assembly 2 and the objective lens assembly 3 are arranged sequentially along the length of the main mirror tube 1.

[0054] The second adjustment component 6 passes through the adjustment port 11 and is connected to the cooling target plate assembly 5, for locking or unlocking the cooling target plate assembly 5.

[0055] refer to Figure 1 and Figure 2 As explained, the cooling target assembly 5 is also located in the internal cavity of the main mirror tube 1, and the cooling target assembly 5, the reticle assembly 2, and the objective lens assembly 3 are arranged sequentially along the length of the main mirror tube 1. Correspondingly, part of the structure of the second adjustment assembly 6 extends into the interior of the main mirror tube 1 to connect the cooling target assembly 5. The second adjustment assembly 6 can be slidably inserted into the adjustment port 11 along the length of the main mirror tube 1, and the remaining structure of the second adjustment assembly 6 remains outside the main mirror tube 1. The cooling target assembly 5 is supported in the main mirror tube 1 by the second adjustment assembly 6, and the cooling target assembly 5 can be locked or released. Thus, the operator can easily adjust the position of the cooling target assembly 5 relative to the main mirror tube 1 by using the second adjustment assembly 6.

[0056] Based on the above embodiments, the cooling target plate assembly 5 includes a homogeneous cooling target plate 51, a semiconductor cooling chip 52, a thermal pad 53, a semiconductor cooling chip partition 54, a cooling assembly bracket 55, and a cooling fan 56.

[0057] The homogeneous cold target plate 51, the semiconductor cooling chip partition 54, and the cooling assembly bracket 55 are arranged and fixedly connected in sequence along the length of the main mirror tube 1, and the homogeneous cold target plate 51 is located on the side close to the reticle assembly 2.

[0058] The thermal pad 53 is embedded in the mounting port of the semiconductor refrigeration chip partition 54, the semiconductor refrigeration chip 52 is embedded in the mounting port of the homogeneous cold target plate 51, and the cooling fan 56 is inserted into the mounting port of the refrigeration unit bracket 55.

[0059] refer to Figure 1 and Figure 2As explained, the homogeneous cold target plate 51, the thermoelectric cooler partition 54, and the cooling assembly bracket 55 are arranged sequentially from right to left and are fixedly connected by adhesive or screws. Mounting openings extending along their thickness and penetrating the thermoelectric cooler partition 54 are provided on both the homogeneous cold target plate 51 and the thermoelectric cooler partition 54. The cooling assembly bracket 55 adopts a tubular frame structure. The thermal pad 53 is nested in the mounting opening of the thermoelectric cooler partition 54. Similarly, the thermoelectric cooler 52 is nested in the mounting opening of the homogeneous cold target plate 51. The heat-absorbing surface of the thermoelectric cooler 52 is close to the reticle assembly 2, and the heat-releasing surface abuts against the thermal pad 53, thus quickly absorbing the heat generated by the thermoelectric cooler 52. The cooling fan 56 is inserted into and snapped into the mounting opening of the cooling assembly bracket 55 to continuously dissipate heat from the thermoelectric cooler 52.

[0060] Correspondingly, the thermoelectric cooler 52 and the cooling fan 56 are both electrically connected to the power adapter via power cables to supply power to the thermoelectric cooler 52 and the cooling fan 56; and the homogenized cold target plate 51, the thermoelectric cooler 52, the thermal pad 53, the thermoelectric cooler partition 54 and the cooling fan 56 are all supported inside the main lens tube 1 by the second adjustment component 6, which facilitates the reduction of production difficulty and production cost, and improves the stability of the cold target plate assembly 5. The structure of the second adjustment component 6 extending into the main lens tube 1 is connected to the cooling assembly bracket 55 so as to adjust the overall position of the cold target plate assembly 5.

[0061] When in use, after powering on the cooling target assembly 5, the semiconductor cooling chip 52 cools the homogeneous cooling target 51. A temperature difference is formed through the light-transmitting slit of the reticle assembly 2. Since the cooling fan 56 is provided to dissipate heat from the semiconductor cooling chip 52, the surface shape error of the light-transmitting slit of the reticle assembly 2 and the homogeneous cooling target 51 are small, and the temperature conduction is uniform. As a result, the thermal image formed by the objective lens assembly 3 is clearly visible. Moreover, the semiconductor cooling chip 52 is not easily damaged during continuous operation, which helps to extend the service life of the adjustable object distance collimator.

[0062] Based on the above embodiment, the peripheral wall of the main lens tube 1 has a wiring hole 12, through which the power supply cables of the cooling fan 56 and the semiconductor cooling chip 52 pass. The wiring hole 12 can be configured with reference to the adjustment port 11.

[0063] For preferred options, please refer to [the following]. Figure 1 and Figure 2 The main lens tube 1 has a wiring hole 12 extending along its own length direction, so that when adjusting the position of the reticle assembly 2 and the cooling target assembly 5, the power supply cable can move along the length direction of the wiring hole 12. This arrangement helps to avoid the power supply cable from interfering with the position adjustment of the reticle assembly 2 and the cooling target assembly 5.

[0064] Based on the above embodiments, the reticle assembly 2 includes a reticle sliding frame 21 and a slit reticle 22;

[0065] The slit reticle 22 is fixedly connected to the reticle sliding frame 21, and the slit reticle 22 is located at the end of the reticle sliding frame 21 near the cooling target plate assembly 5.

[0066] refer to Figure 1 and Figure 2 As explained, the reticle sliding frame 21 is a tube with an internal cavity extending along its own length. The slit reticle 22 is fixed to the left end of the reticle sliding frame 21, for example by screws or adhesive. The slit reticle 22 is supported inside the main lens tube 1 by the reticle sliding frame 21, which helps to reduce production difficulty and cost, and improves the stability of the reticle assembly 2. Correspondingly, the structure of the first adjustment component 4 extending into the main lens tube 1 is connected to the reticle sliding frame 21.

[0067] Based on the above embodiments, both the first adjustment component 4 and the second adjustment component 6 include a fastening screw 41 and a screw washer 42.

[0068] The fastening screw 41 in the first adjustment assembly 4 passes through the adjustment port 11 and is inserted into the reticle sliding frame 21. The screw washer 42 in the first adjustment assembly 4 is sandwiched between the outer surface of the main lens tube 1 and the tail end of the fastening screw 41 in the first adjustment assembly 4.

[0069] The fastening screw 41 in the second adjustment assembly 6 passes through the adjustment port 11 and is inserted into the cooling unit bracket 55. The screw washer 42 in the second adjustment assembly 6 is sandwiched between the outer surface of the main lens tube 1 and the tail end of the fastening screw 41 in the second adjustment assembly 6.

[0070] refer to Figure 1 and Figure 2 For illustrative purposes, at least two threaded holes are provided on the peripheral wall of the reticle sliding frame 21. Preferably, the threaded holes of the reticle sliding frame 21 are evenly distributed around the center line of the reticle sliding frame 21. The fastening screws 41 of the first adjustment component 4 pass through the corresponding adjustment port 11, and the head end of the fastening screw 41 is inserted into the corresponding threaded hole of the reticle sliding frame 21. The tail end is sandwiched between the screw washer 42 and the main lens tube 1. In use, the fastening screw 41 is rotated in the forward direction to make it penetrate into the threaded hole of the reticle sliding frame 21, and the fastening screw 41 is rotated in the reverse direction to make its tail end move away from the main lens tube 1. By pushing the tail end of the fastening screw 41, the reticle assembly 2 can be moved along the length direction of the main lens tube 1.

[0071] Similarly, at least two threaded holes are provided on the peripheral wall of the cooling assembly bracket 55. Preferably, the threaded holes of the cooling assembly bracket 55 are evenly distributed around the center line of the cooling assembly bracket 55. The fastening screws 41 of the second adjustment component 6 pass through the corresponding adjustment port 11, and the head end of the fastening screw 41 is inserted into the corresponding threaded hole of the cooling assembly bracket 55. The tail end is sandwiched between the screw washer 42 and the main lens tube 1. In use, the fastening screw 41 is rotated in the forward direction to make it penetrate into the threaded hole of the cooling assembly bracket 55, and the fastening screw 41 is rotated in the reverse direction to make its tail end move away from the main lens tube 1. In this way, the tail end of the fastening screw 41 can be pushed to make the cooling target plate assembly 5 move along the length direction of the main lens tube 1.

[0072] Preferably, the cooling unit bracket 55 adopts a tubular frame structure, and the above-mentioned mounting port of the cooling unit bracket 55 is an internal cavity that runs through its own length. The cooling fan 56 is inserted into and snapped into the internal cavity of the cooling unit bracket 55. The power supply cable of the cooling fan 56 passes through the wiring port on the peripheral wall of the cooling unit bracket 55, and a threaded hole is provided on the peripheral wall of the cooling unit bracket 55 for threaded connection to the fastening screw 41 in the second adjustment component 6.

[0073] The first adjustment assembly 4 and the second adjustment assembly 6 using fastening screw 41 are low in cost and easy to adjust. After adjustment, the collimator is smaller in size. However, the first adjustment assembly 4 and the second adjustment assembly 6 are not limited to the above-mentioned examples. As long as the above functions can be achieved, they are acceptable. For example, the first adjustment assembly 4 and the second adjustment assembly 6 may include a threaded rod and a wing nut. The threaded rod passes through the adjustment port 11 and is inserted into the threaded hole of the corresponding cooling unit bracket 55 or the threaded hole of the reticle sliding frame 21. The wing nut is sleeved on the outside of the end of the threaded rod located outside the main mirror tube 1 and is threadedly engaged with the threaded rod. By rotating the wing nut, the cooling target plate assembly 5 and the reticle assembly 2 can be locked or unlocked.

[0074] It should be noted that the diameter of the fastening screw 41 in the first adjustment component 4 and the diameter of the fastening screw 41 in the second adjustment component 6 can be the same or different, as long as the installation and adjustment requirements are met. For example, the diameter of the fastening screw 41 in the first adjustment component 4 is 2.5mm and the diameter of the fastening screw 41 in the second adjustment component 6 is 2mm. Alternatively, preferably, the diameter of the fastening screw 41 in the first adjustment component 4 and the diameter of the fastening screw 41 in the second adjustment component 6 are both 2.5mm to reduce assembly difficulty.

[0075] Based on the above embodiments, the objective lens assembly 3 includes a pressure ring 31, a sealing ring 32, and a germanium lens 33;

[0076] The pressure ring 31, the sealing ring 32, and the germanium lens 33 are arranged sequentially along the length of the main lens tube 1, with the pressure ring 31 located on the side away from the reticle assembly 2, and pressing the sealing ring 32 against the germanium lens 33, which in turn presses the germanium lens 33 against the main lens tube 1.

[0077] refer to Figure 1 and Figure 2 As explained, the pressure ring 31, sealing ring 32, and germanium lens 33 are arranged sequentially from right to left. Correspondingly, the internal cavity of the main lens tube 1 near its own outlet is a stepped cavity. In the stepped cavity, the cavity with a larger diameter is connected to the cavity with a smaller diameter through a stepped surface. The germanium lens 33 abuts against the stepped surface. The pressure ring 31 is interference-fitted with the inner wall of the main lens tube 1 so that the germanium lens 33 is pressed tightly in the main lens tube 1 by the sealing ring 32 sandwiched between the germanium lens 33 and the pressure ring 31, so that the germanium lens 33 is securely connected to the main lens tube 1.

[0078] Based on the above embodiments, a controller and a position detector are also included, the position detector being used to detect the position of the slit reticle 22;

[0079] The position detector signal is connected to the controller, which receives the position signal from the position detector and outputs the object distance.

[0080] refer to Figure 1 and Figure 2 As explained, a position detector, such as a capacitive displacement sensor, an ultrasonic displacement sensor, or an inductive displacement sensor, is installed on the main lens tube 1. This detector can detect and determine the position of the slit reticle 22 in real time when the position of the reticle assembly 2 is adjusted. The position signal is then transmitted to the controller via wired or wireless means, and the controller calculates the object distance after adjusting the slit reticle 22.

[0081] Furthermore, the adjustable object distance collimator also includes a second position detector. The second position detector can be the same type as or different from the first detector, so that it can detect and determine the position of the semiconductor cooling chip 52 in real time when adjusting the position of the cooling target assembly 5. The second position detector is connected to the controller signal, so the signal of the position of the semiconductor cooling chip 52 detected by the second position detector in real time can be transmitted to the controller and output by the controller. Furthermore, it can also calculate and determine whether the semiconductor cooling chip 52 is adjusted in place.

[0082] Furthermore, the controller includes a processor and a storage unit. The processor is signal-connected to the position detector and the storage unit. The processor is used to receive position signals and output object distance signals, while the storage unit is used to receive and store object distance signals for the operator to retrieve and use.

[0083] Based on the above embodiment, the adjustment port of the collimator has a micrometer scale to facilitate accurate adjustment of the cooling target plate assembly 5 and the reticle assembly 2.

[0084] In summary, compared with related technologies, this adjustable object distance collimator is smaller in size, making it easier to handle, transport, and install, and it is also less expensive and easier to adjust the object distance.

[0085] In addition to the adjustable object distance collimator described above, this application also provides an optical device that includes the adjustable object distance collimator disclosed in the above embodiments. The structure of other parts of the optical device can be found in the prior art, and will not be described in detail here.

[0086] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the terms "upper surface," "lower surface," "top," and "bottom" and the directional terms "upper," "lower," "left," and "right" mentioned above are defined based on the accompanying drawings in the specification.

[0087] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0088] The adjustable object distance collimator and optical device provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. An adjustable object distance collimator, characterized in that, include: The main lens tube (1), the reticle assembly (2), the objective lens assembly (3), and the first adjustment assembly (4); The reticle assembly (2) is used to achieve beam modulation and image preset, and the objective lens assembly (3) is used to project the beam emitted through the reticle assembly (2); The reticle assembly (2) and the objective lens assembly (3) are both inserted into the internal cavity of the main mirror tube (1), with the reticle assembly (2) close to the inlet end of the main mirror tube (1) and the objective lens assembly (3) close to the outlet end of the main mirror tube (1). The reticle assembly (2) is movable along the length of the main lens tube (1). The peripheral wall of the main lens tube (1) has an adjustment port (11) extending along its own length. The first adjustment component (4) passes through the adjustment port (11) and is connected to the reticle assembly (2) for locking or unlocking the reticle assembly (2).

2. The adjustable object distance collimator according to claim 1, characterized in that, It also includes a cooling target plate assembly (5) and a second adjustment assembly (6), wherein the cooling target plate assembly (5) is used to cool the reticle assembly (2); The cooling target plate assembly (5) is slidably inserted into the main lens tube (1), and the cooling target plate assembly (5), the reticle assembly (2) and the objective lens assembly (3) are arranged sequentially along the length direction of the main lens tube (1); The second adjustment component (6) passes through the adjustment port (11) and is connected to the cooling target plate assembly (5) for locking or unlocking the cooling target plate assembly (5).

3. The adjustable object distance collimator according to claim 2, characterized in that, The cooling target assembly (5) includes a homogeneous cooling target (51), a semiconductor cooling chip (52), a thermal pad (53), a semiconductor cooling chip partition (54), a cooling assembly bracket (55), and a cooling fan (56). The homogeneous cold target plate (51), the semiconductor cooling chip partition (54) and the cooling assembly bracket (55) are arranged and fixedly connected in sequence along the length of the main mirror tube (1), and the homogeneous cold target plate (51) is located on the side close to the reticle assembly (2). The thermal pad (53) is embedded in the mounting port of the semiconductor cooling chip partition (54), the semiconductor cooling chip (52) is embedded in the mounting port of the homogeneous cold target plate (51), and the cooling fan (56) is inserted into the mounting port of the cooling assembly bracket (55).

4. The adjustable object distance collimator according to claim 3, characterized in that, The peripheral wall of the main mirror tube (1) has a wiring hole (12), through which the power supply cables of the cooling fan (56) and the semiconductor cooling chip (52) pass.

5. The adjustable object distance collimator according to claim 4, characterized in that, The wiring hole (12) is configured as an elongated hole, and the wiring hole (12) extends along the length direction of the main lens tube (1).

6. The adjustable object distance collimator according to any one of claims 3-5, characterized in that, The reticle assembly (2) includes a reticle sliding frame (21) and a slit reticle (22). The slit reticle (22) is fixedly connected to the reticle sliding frame (21), and the slit reticle (22) is located at one end of the reticle sliding frame (21) near the cooling target plate assembly (5).

7. The adjustable object distance collimator according to claim 6, characterized in that, Both the first adjustment assembly (4) and the second adjustment assembly (6) include a fastening screw (41) and a screw washer (42). The fastening screw (41) in the first adjustment assembly (4) passes through the adjustment port (11) and is inserted into the reticle sliding frame (21). The screw washer (42) in the first adjustment assembly (4) is sandwiched between the outer surface of the main lens tube (1) and the tail end of the fastening screw (41) in the first adjustment assembly (4). The fastening screw (41) in the second adjustment assembly (6) passes through the adjustment port (11) and is inserted into the cooling unit bracket (55). The screw washer (42) in the second adjustment assembly (6) is sandwiched between the outer surface of the main lens tube (1) and the tail end of the fastening screw (41) in the second adjustment assembly (6).

8. The adjustable object distance collimator according to claim 6, characterized in that, The objective lens assembly (3) includes a pressure ring (31), a sealing ring (32), and a germanium lens (33). The pressure ring (31), sealing ring (32) and germanium lens (33) are arranged sequentially along the length of the main lens tube (1), and the pressure ring (31) is located on the side away from the reticle assembly (2), pressing the sealing ring (32) against the germanium lens (33) and the germanium lens (33) against the main lens tube (1).

9. The adjustable object distance collimator according to claim 6, characterized in that, It also includes a controller and a position detector, the position detector being used to detect the position of the slit reticle (22); Furthermore, the position detector signal is connected to the controller, which is used to receive the position signal from the position detector and output the object distance.

10. An optical device, characterized in that, The adjustable object distance collimator as described in any one of claims 1-9 above.

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