Optical parallax adjustment structure and optical device

Abstract

The application provides an optical parallax adjustment structure and an optical equipment. The optical parallax adjustment structure comprises a parallax adjustment ring, a tube limiting ring, and an elastic adjustment ring. The parallax adjustment ring comprises an adjustment part and a connecting part. At least part of the connecting part is arranged in an inner cavity of an image tube shell. The adjustment part is arranged outside the inner cavity and is fixed to the connecting part. The tube limiting ring is arranged on a front end surface of the image tube facing the parallax adjustment ring and abuts against the connecting part. The elastic adjustment ring is arranged in an adjustment ring mounting groove of the image tube shell and elastically abuts against a rear end surface of the parallax adjustment ring. An adjustment hand wheel is sleeved on a front end shaft diameter of the image tube shell and abuts against the parallax adjustment ring. The adjustment hand wheel is used to move in an axial direction towards or away from the image tube barrel under the action of an external force to adjust the axial position between the imaging surface of the image tube and the prism. The application can realize parallax adjustment outside the image tube shell without disassembling the image tube shell, thereby improving the parallax adjustment precision and the adjustment efficiency.

Description

Technical Field

[0001] This application relates to the field of optical equipment technology, and in particular to optical fusion parallax adjustment structures and optical equipment. Background Technology

[0002] In optical equipment, parallax adjustment is crucial for image quality. Parallax refers to the image shift caused by the positional deviation between the imaging plane of the image tube and the prism when a target object is imaged through an optical system, thus requiring parallax adjustment.

[0003] Currently, parallax adjustment solutions on the market typically achieve this by adjusting the distance between the OLED screen and the prism. This method requires disassembly and adjustment, which is inefficient and inconvenient. Figure 1 As shown, the conventional adjustment method involves fixing the OLED screen at the rear of the eyepiece to a position perpendicular to the eyepiece lens using a bracket. The distance between the screen and the prism is adjusted by adding shims under the bracket, thereby achieving the purpose of adjusting parallax.

[0004] The parallax adjustment scheme described above requires disassembling the eyepiece housing and operating from the inside, which is not convenient or operable, and may require repeated adjustments to achieve the best effect, resulting in low adjustment efficiency and poor accuracy. Utility Model Content

[0005] This application provides an optical fusion parallax adjustment structure that enables parallax adjustment to be performed outside the image tube housing, thereby improving the accuracy and efficiency of parallax adjustment.

[0006] This application also provides an optical device with high parallax adjustment accuracy, clear imaging, and good imaging quality.

[0007] On one hand, embodiments of this application provide an optical fusion parallax adjustment structure, including:

[0008] A parallax adjustment ring, comprising an adjustment part and a connecting part, wherein at least a portion of the connecting part is disposed in the inner cavity of the image tube housing, and the adjustment part is disposed outside the inner cavity and is fixedly connected to the connecting part;

[0009] A picture tube limiting ring is disposed on the front end face of the picture tube facing the parallax adjustment ring, and the picture tube limiting ring abuts against the connecting part;

[0010] An elastic adjustment ring is disposed in the adjustment ring mounting groove of the image tube housing and elastically abuts against the rear end face of the parallax adjustment ring;

[0011] The adjusting handwheel is fitted onto the front end of the image tube housing and abuts against the parallax adjustment ring. The adjusting handwheel is used to move axially toward or away from the image tube under the action of external force to adjust the axial position between the imaging surface of the image tube and the prism.

[0012] In some embodiments, the parallax adjustment ring, the image tube limiting ring, the image tube, the elastic adjustment ring, and the adjustment handwheel are coaxially distributed along the axial direction.

[0013] In some embodiments, the outer circumferential surface of the front end shaft diameter of the image tube housing is provided with an external thread, the adjusting handwheel is provided with an internal thread, and the adjusting handwheel is threadedly connected to the front end shaft diameter.

[0014] In some embodiments, the end face of the front end shaft is provided with a plurality of circumferentially distributed insertion holes, and the connecting part includes a plurality of circumferentially distributed insertion posts, each insertion post and each insertion hole corresponding to each other for insertion and engagement.

[0015] In some embodiments, the elastic adjustment ring includes an adjustment body, at least one crest portion and at least one trough portion, the adjustment body being wave-shaped, and the crest portion and the trough portion being disposed on the side of the adjustment body facing the image tube.

[0016] In some embodiments, the crests and troughs are distributed at intervals and alternately arranged.

[0017] In some embodiments, the plug post is provided with a sealing groove, and further includes a sealing ring sleeved in the sealing groove, the sealing ring being used to seal the gap between the plug post and the plug hole.

[0018] In some embodiments, an anti-slip structure is also provided on the outer peripheral surface of the adjusting handwheel.

[0019] On the other hand, embodiments of this application also provide an optical device, including:

[0020] Image tube housing, wherein the image tube housing has an inner cavity;

[0021] Image tubes and prisms are disposed within the cavity;

[0022] The optical fusion parallax adjustment structure provided in any of the above embodiments is at least partially disposed inside the image tube housing and is used to adjust the axial position between the imaging surface of the image tube and the prism.

[0023] In some embodiments, the image tube housing includes an image tube cylinder and a rear shell, the image tube cylinder being fixedly connected to the rear shell to form the inner cavity, and the prism being disposed on the rear shell.

[0024] In this embodiment, by operating the adjustment handwheel, the parallax adjustment ring is moved back and forth along the axial direction during rotation, thereby achieving the axial translation of the image tube and adjusting the parallax. This solution eliminates the need for disassembly to adjust parallax. After the entire machine is assembled, parallax adjustment can be achieved by rotating the adjustment handwheel while the machine is powered on. Furthermore, it eliminates the need for repeated adjustments and allows for faster and more accurate adjustment to the minimum parallax state while powered on, improving both the accuracy and efficiency of parallax adjustment. Attached Figure Description

[0025] 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.

[0026] Figure 1 Exploded views of optical fusion parallax adjustment structures provided in some embodiments of this application;

[0027] Figure 2 A cross-sectional view of an optical fusion parallax adjustment structure provided in some embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the elastic adjustment ring in the optical fusion parallax adjustment structure provided in some embodiments of this application.

[0029] The attached figures are labeled as follows:

[0030] 1-Adjusting handwheel; 2-Parallelism adjustment ring; 3-Image tube limiting ring; 4-Image tube; 5-Elastic adjustment ring; 6-Image tube cylinder; 7-Rear shell; 8-Prism;

[0031] 21-Adjustment part; 22-Connection part; 51-Adjustment body; 52-Crest part; 53-Trough part; 61-Front end shaft diameter; 62-Insertion hole. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, 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.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., are used to distinguish different objects, not to describe a particular order or hierarchy.

[0034] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0038] In this application, "multiple" means two or more (including two).

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 An exploded view of the optical fusion parallax adjustment structure provided in this application; Figure 2 A cross-sectional view of an optical fusion parallax adjustment structure provided in some embodiments of this application.

[0040] This application provides an optical fusion parallax adjustment structure, including a parallax adjustment ring 2, an image tube limiting ring 3, an elastic adjustment ring 5, and an adjustment handwheel 1. The parallax adjustment ring 2 includes an adjustment portion 21 and a connecting portion 22. At least a portion of the connecting portion 22 is disposed within the inner cavity of the image tube housing, while the adjustment portion 21 is disposed outside the inner cavity and is fixedly connected to the connecting portion 22. The image tube limiting ring 3 is disposed on the front end face of the image tube 4 facing the parallax adjustment ring and abuts against the connecting portion 22. The elastic adjustment ring 5 is disposed in the adjustment ring mounting groove of the image tube housing and elastically abuts against the rear end face of the parallax adjustment ring. The adjustment handwheel 1 is sleeved on the front end shaft diameter 61 of the image tube housing and abuts against the parallax adjustment ring 2.

[0041] The adjustment part 21 of the parallax adjustment ring 2 has a ring-shaped structure, and the connecting part 22 is fixedly connected to the adjustment part 21. The two can be rigidly connected to ensure that the force transmission is unimpeded. The connecting part 22 extends into the inner cavity of the image tube housing. Under the clamping force of the adjusting handwheel 1 and the elastic force of the elastic adjusting ring 5, the parallax adjustment ring 2 and the image tube limiting ring 3 remain in contact. The adjustment part 21 is exposed outside the image tube housing and is in contact with the adjusting handwheel 1. The parallax adjustment ring 2 can transmit the driving force of the handwheel to drive the image tube 4 to move axially.

[0042] The image tube limiting ring 3 is located on the front end face of the image tube 4, that is, on the side of the image tube facing the parallax adjustment ring 2. The image tube limiting ring 3 abuts against the connecting part 22 of the parallax adjustment ring 2 to receive thrust or apply thrust to the parallax adjustment ring 2. The image tube limiting ring 3 and the elastic adjustment ring 5 work together to clamp the image tube 4 at both the front and rear ends respectively. The image tube limiting ring 3 and the image tube can be fixedly connected or movably connected. To prevent deflection between the two, a positioning groove is provided on the front end face of the image tube 4, and the image tube limiting ring 3 is provided with a positioning claw. The positioning claw is engaged in the positioning groove to prevent deflection.

[0043] The elastic adjusting ring 5 can be fixedly assembled in the inner cavity of the image tube housing. The elastic adjusting ring 5 can be a rigid elastic component, such as a steel ring made of spring steel, which provides elastic preload in the axial direction using its own elasticity. Alternatively, elastic preload can be applied through the adjusting part 21. The elastic adjusting ring 5 provides axial elastic preload, eliminates thread clearance, and ensures a smooth and wobble-free feel when the adjusting handwheel 1 rotates. The elastic adjusting ring 5 and the image tube limiting ring 3 form a bidirectional clamping structure to ensure that the image tube 4 does not move axially.

[0044] The adjusting handwheel 1 is fitted onto the front end of the image tube housing, shaft diameter 61, and the two are rotatably connected, for example, by a threaded connection, a bearing-supported rotatable connection, a retaining ring rotatable connection, or a snap-fit ​​rotatable connection. The adjusting handwheel 1 abuts against the adjusting part 21 of the parallax adjustment ring 2.

[0045] The parallax adjustment ring 2, its adjustment section 21, the image tube limiting ring 3, the elastic adjustment ring 5, and the adjustment handwheel 1 work together to fine-tune the position of the image tube 4. The adjustment handwheel 1 is used to move axially towards or away from the image tube 6 under external force to adjust the axial position between the imaging surface of the image tube 4 and the prism 8. Rotating the adjustment handwheel 1 causes axial displacement, pushing the parallax adjustment ring 2 forward or backward. The clamping force can be adjusted by setting the pre-compression amount of the elastic adjustment ring 5.

[0046] For example, rotating the adjustment handwheel 1 counterclockwise causes it to rotate outward, moving it axially backward and releasing pressure on the parallax adjustment ring 2. The elastic adjustment ring 5 then pushes the image tube limiting ring 3, causing the image tube to translate towards the objective lens, moving the imaging surface away from the prism 8 to compensate for long-distance parallax. Rotating the adjustment handwheel 1 clockwise causes it to move axially forward, pushing the parallax adjustment ring 2 forward. The parallax adjustment ring 2 then pushes the image tube limiting ring 3, further pushing the image tube 4 towards the eyepiece, bringing the imaging surface closer to the prism 8 to compensate for near-distance parallax.

[0047] This application has a bidirectional elastic pre-tightening structure. The elastic adjustment ring 5 and the image tube limiting ring 3 form a bidirectional pressing structure for the image tube 4, which can eliminate gaps and improve adjustment accuracy.

[0048] The optical fusion parallax adjustment structure provided in this application allows for parallax adjustment without disassembly; simply rotating the adjustment handwheel 1 achieves the adjustment, thus improving operational efficiency. After the entire machine is assembled, parallax adjustment can be performed while powered on, eliminating the need for repeated adjustments, simplifying operation and improving adjustment efficiency. Furthermore, the components in this application are coaxially distributed along the axis, resulting in a compact structure, small footprint, and high adjustment precision.

[0049] In one specific embodiment, the parallax adjustment ring 2, the image tube limiting ring 3, the image tube 4, the elastic adjustment ring 5, and the adjustment handwheel 1 are coaxially distributed along the axial direction. The coaxial arrangement of each component ensures the linear consistency of force transmission and displacement during the adjustment process, thereby ensuring the axial movement of the image tube 4 and guaranteeing the accuracy of parallax adjustment.

[0050] In one specific embodiment, the end face of the front shaft diameter 61 is provided with a plurality of circumferentially distributed insertion holes 62, and the connecting part 22 includes a plurality of circumferentially distributed insertion posts, each insertion post corresponding to and engaging with each insertion hole 62. In this embodiment, the engagement between the insertion post and the insertion hole 62 can form a non-fixed connection, allowing slight axial displacement but restricting relative circumferential rotation. At the same time, the image tube 4 can move axially within the engagement range to achieve position adjustment.

[0051] Furthermore, the outer circumferential surface of the front end shaft diameter 61 of the image tube housing is provided with an external thread, and the adjusting handwheel 1 is provided with an internal thread. The adjusting handwheel 1 is threadedly connected to the front end shaft diameter 61, and the internal thread of the adjusting handwheel 1 engages with the external thread of the image tube housing, converting the rotational motion into the axial movement of the image tube 4. When the adjusting handwheel 1 is rotated, the adjusting handwheel 1 pushes the image tube 4 to move forward or backward along the axial direction through the threaded transmission, making the adjustment more precise and accurate.

[0052] like Figure 3 As shown. In one specific embodiment, the elastic adjustment ring includes an adjustment body 51, at least one crest portion 52 and at least one trough portion 53. The adjustment body 51 is wavy, and the crest portion 52 and the trough portion 53 are disposed on the side of the adjustment body 51 facing the image tube 4.

[0053] The crest 52 is the highest point of the wavy structure, directly contacting the image tube 4. The trough 53 is the lowest point of the wavy structure, alternating with the crest 52 to form an elastic support structure. The crest 52 and trough 53 are located on the side of the adjusting body 51 facing the image tube, while the other side is fixed to the image tube cylinder 6 or the rear shell 7 of the image tube housing. The elastic adjusting ring has multi-contact point support, improving focusing stability.

[0054] Optionally, the crests 52 and troughs 53 are distributed at intervals and alternately arranged, and the crests 52 and troughs 53 are smoothly transitioned by a curved surface to form a wave surface, thereby achieving linear adjustment, ensuring adjustment accuracy, and dispersing stress to ensure the smooth movement of the image tube 4.

[0055] To ensure the airtight connection between the parallax adjustment ring 2 and the image tube housing, the plug post is provided with a sealing groove, and also includes a sealing ring fitted in the sealing groove. The sealing ring is used to seal the gap between the plug post and the plug hole 62 to ensure the airtight connection between the two.

[0056] To improve the grip friction, an anti-slip structure can be provided on the outer circumference of the adjusting handwheel 1. This anti-slip structure can be an anti-slip texture, an anti-slip protrusion, or an anti-slip sleeve can be wrapped around the outside of the adjusting handwheel 1 to prevent the hand from slipping.

[0057] Continue to refer to Figure 1 and Figure 2 Furthermore, this application also provides an optical device, including an image tube housing, an image tube 4, a prism 8, and an optical fusion parallax adjustment structure. The image tube housing has an inner cavity, and the image tube and prism 8 are fixedly installed in the inner cavity. At least part of the optical fusion parallax adjustment structure is disposed inside the image tube housing and connected to the image tube 4. The axial position between the imaging surface of the image tube 4 and the prism 8 can be adjusted through the optical fusion parallax adjustment structure.

[0058] The optical device provided in this application embodiment has high parallax adjustment accuracy, clear imaging, and good imaging quality.

[0059] In one specific embodiment, the image tube housing includes an image tube cylinder 6 and a rear shell 7, with the image tube cylinder 6 and the rear shell 7 fixedly connected to form an inner cavity, and a prism 8 disposed on the rear shell 7.

[0060] During installation, firstly, the parallax adjustment ring 2 is installed onto the front end shaft diameter 61 of the image tube 6 through the various insertion holes 62 on the image tube 6. Then, the adjusting handwheel 1 is screwed onto the image tube 6 via its threaded engagement. Next, the image tube limiting ring 3 is installed in the mounting groove inside the image tube 6 at the position contacting the parallax adjustment ring 2, and then the image tube 4 is installed. Next, the elastic adjusting ring 5 is installed into the groove of the rear housing 7, and assembled with the rear housing 7 onto the image tube 6. The rear housing 7 is fixedly connected to the image tube 6 by four screws. At this point, the elastic adjusting ring 5 and the image tube limiting ring 3 clamp the image tube 4. By screwing in or out the adjusting handwheel 1, the parallax adjustment ring 2 is moved axially, thus achieving the back-and-forth translation of the image tube 4, thereby adjusting the parallax.

[0061] The optical fusion parallax adjustment structure 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 optical fusion parallax adjustment structure, characterized in that, include: The parallax adjustment ring (2) includes an adjustment part (21) and a connecting part (22). At least a portion of the connecting part (22) is disposed in the inner cavity of the image tube housing, and the adjustment part (21) is disposed outside the inner cavity. The adjustment part (21) is fixedly connected to the connecting part (22). Image tube limiting ring (3) is disposed on the front end face of the image tube (4) facing the parallax adjustment ring (2), and the image tube limiting ring (3) abuts against the connecting part (22); Elastic adjustment ring (5), the elastic adjustment ring (5) is disposed in the adjustment ring mounting groove of the image tube housing, and elastically abuts against the rear end face of the parallax adjustment ring (2); The adjusting handwheel (1) is fitted onto the front end shaft diameter (61) of the image tube housing and abuts against the parallax adjustment ring (2). The adjusting handwheel (1) is used to move axially toward or away from the image tube cylinder (6) under the action of external force to adjust the axial position between the imaging surface of the image tube (4) and the prism (8).

2. The optical fusion parallax adjustment structure according to claim 1, characterized in that, The parallax adjustment ring (2), the image tube limiting ring (3), the image tube (4), the elastic adjustment ring (5), and the adjustment handwheel (1) are coaxially distributed along the axis.

3. The optical fusion parallax adjustment structure according to claim 2, characterized in that, The outer circumferential surface of the front end shaft diameter (61) of the image tube housing is provided with an external thread, and the adjusting handwheel (1) is provided with an internal thread. The adjusting handwheel (1) is threadedly connected to the front end shaft diameter (61).

4. The optical fusion parallax adjustment structure according to claim 3, characterized in that, The end face of the front shaft diameter (61) is provided with a plurality of circumferentially distributed insertion holes (62), and the connecting part (22) includes a plurality of circumferentially distributed insertion posts, each insertion post and each insertion hole (62) are inserted and engaged in a one-to-one correspondence.

5. The optical fusion parallax adjustment structure according to any one of claims 1 to 4, characterized in that, The elastic adjustment ring (5) includes an adjustment body (51), at least one crest portion (52) and at least one trough portion (53). The adjustment body (51) is wavy, and the crest portion (52) and the trough portion (53) are disposed on the side of the adjustment body (51) facing the image tube (4).

6. The optical fusion parallax adjustment structure according to claim 5, characterized in that, The crests (52) and troughs (53) are distributed at intervals and alternately arranged.

7. The optical fusion parallax adjustment structure according to claim 4, characterized in that, The plug is provided with a sealing groove and also includes a sealing ring sleeved in the sealing groove. The sealing ring is used to seal the gap between the plug and the plug hole (62).

8. The optical fusion parallax adjustment structure according to claim 1, characterized in that, It also includes an anti-slip structure disposed on the outer peripheral surface of the adjusting handwheel (1).

9. An optical device, characterized in that, include: Image tube housing, wherein the image tube housing has an inner cavity; Image tube (4) and prism (8) are disposed in the inner cavity; The optical fusion parallax adjustment structure as described in any one of claims 1 to 8, wherein at least a portion of the optical fusion parallax adjustment structure is disposed inside the housing of the image tube and is used to adjust the axial position between the imaging surface of the image tube (4) and the prism (8).

10. The optical device according to claim 9, characterized in that, The image tube housing includes an image tube cylinder (6) and a rear shell (7). The image tube cylinder (6) is fixedly connected to the rear shell (7) to form the inner cavity. The prism (8) is disposed on the rear shell (7).

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