Astronomical telescope

Abstract

The astronomical telescope comprises a cylinder body and a fixing ring, one end of the cylinder body is used for installing a corner mirror assembly or a camera, and the other end of the cylinder body is used for installing an objective lens assembly. The fixing ring is arranged on the inner wall of the cylinder body, the inner wall of the fixing ring is provided with an internal thread, the internal thread is used for being matched and connected with an external thread on the outer wall of the built-in lens group, and the built-in lens group is a focus reduction lens assembly or a flat field lens assembly. According to the astronomical telescope provided by the embodiment of the utility model, the fixing ring with the internal threads can be connected with the focus reduction lens assembly or the flat field lens assembly, so that the existing astronomical telescope can be combined with the focus reduction lens assembly and the flat field lens assembly. And the position of the telescopic tube is moved, so that the corner mirror assembly or the camera can be moved to the focus of the focus reduction mirror assembly or the flat field lens assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of telescopes, and particularly relates to an astronomical telescope. Background Art

[0002] In the camera state of existing astronomical telescopes, it is sometimes necessary to install different functional components to meet different shooting requirements. For example, when installing a focal reducer component, the focal length of the astronomical telescope can be reduced, the imaging range can be expanded, the field of view and aberration can be corrected, and the image brightness can be improved. When installing a field flattener component, the full-frame image height of the shot can correct the defect of field curvature and improve the imaging quality at the edge of the field of view.

[0003] However, existing astronomical telescopes are basically of a single-tube structure, making it difficult to take into account both the focal reducer component and the field flattener component at the same time. Generally, it can only be connected to one of the focal reducer component and the field flattener component, resulting in the need to equip different astronomical telescopes when shooting celestial bodies with different picture quality requirements, which is not only troublesome but also increases the use cost.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an astronomical telescope, which is used to solve the problem that existing astronomical telescopes cannot take into account both the focal reducer component and the field flattener component at the same time.

[0006] To achieve the above purpose, a specific embodiment of the utility model provides an astronomical telescope, including a barrel and a fixing ring. One end of the barrel is used to install a corner mirror component or a camera, and the other end is used to install an objective lens component. The fixing ring is arranged on the inner wall of the barrel, and an internal thread is arranged on the inner wall of the fixing ring, and the internal thread is used for mating connection with an external thread on the outer wall of an internal lens group, and the internal lens group is a focal reducer component or a field flattener component.

[0007] In one or more embodiments of the utility model, the barrel includes a main barrel, a focusing base installed at one end of the main barrel, and a telescopic tube sleeved inside the main barrel. The main barrel and the telescopic tube are located on opposite sides of the focusing base. The main barrel is used to install the objective lens component, and the telescopic tube is used to install the corner mirror component or the camera and can move along the axis of the focusing base. The fixing ring is arranged on the inner wall of the main barrel or the inner wall of the focusing base.

[0008] In one or more embodiments of the utility model, the fixing ring is arranged on the inner wall of the focusing base, and the telescopic tube is used to accommodate the internal lens group.

[0009] In one or more embodiments of the present utility model, the astronomical telescope further includes a rack disposed on the outer wall of the telescopic tube and a gear rotatably connected to the focusing base. At least a part of the gear extends into the focusing base and is meshed with the rack.

[0010] In one or more embodiments of the present utility model, the inner diameter of the fixing ring is less than or equal to the inner diameter of the telescopic tube.

[0011] In one or more embodiments of the present utility model, the astronomical telescope further includes an objective lens assembly, a connector, and an internal lens group. The objective lens assembly is sleeved in the main lens barrel. The connector is detachably installed at one end of the telescopic tube away from the fixing ring, and the connector is used to connect the corner mirror assembly or the camera. At least a part of the internal lens group is sleeved in the telescopic tube and is connected by the cooperation of the external thread and the internal thread on its circumferential surface.

[0012] In one or more embodiments of the present utility model, a first stop is provided on the circumferential surface of the internal lens group, and the first stop abuts against the side of the fixing ring close to the telescopic tube.

[0013] In one or more embodiments of the present utility model, the outer diameter of the internal lens group is less than the inner diameter of the telescopic tube.

[0014] In one or more embodiments of the present utility model, one end of the connector is sleeved in the focusing base. A threaded hole or a locking groove is provided at this end of the connector. The astronomical telescope further includes a locking bolt disposed on the focusing base, and the locking bolt extends into the threaded hole or the locking groove.

[0015] In one or more embodiments of the present utility model, a second stop is provided on the circumferential surface of the connector, and the second stop abuts against the focusing base.

[0016] Compared with the prior art, the present utility model connects the reducing lens assembly or the flat field lens assembly through the fixing ring with internal threads, so that the existing astronomical telescope can take into account both the reducing lens assembly and the flat field lens assembly. Moreover, by moving the position of the telescopic tube, the distance between the camera and the reducing lens assembly or the flat field lens assembly can also be adjusted, so that the corner mirror assembly or the camera is located at the focus of the reducing lens assembly or the flat field lens assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1The cross-sectional structure diagram of the astronomical telescope without the built-in lens group in an embodiment of the present utility model;

[0019] Figure 2 The cross-sectional structure diagram of the astronomical telescope with a focal reducer assembly installed in an embodiment of the present utility model;

[0020] Figure 3 The cross-sectional structure diagram of the astronomical telescope with a field flattener assembly installed in an embodiment of the present utility model.

[0021] Main reference numerals description: 1, cylinder body, 101, main lens barrel, 102, focusing mount, 103, telescopic tube, 2, fixing ring, 3, gear, 4, rack, 5, objective lens assembly, 6, joint, 7, built-in lens group, 8, first stop member, 9, locking bolt, 10, second stop member. Detailed implementation manners

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Refer to Figures 1 to 3 As shown, this embodiment provides an astronomical telescope, which includes a cylinder body 1 and a fixing ring 2. One end of the cylinder body 1 is used to install a corner mirror assembly or a camera, and the other end of the cylinder body 1 is used to install an objective lens assembly 5. The fixing ring 2 is arranged on the inner wall of the cylinder body 1, and an internal thread is provided on the inner wall of the fixing ring 2, which is used to cooperate with the external thread on the outer wall of the built-in lens group 7. The built-in lens group 7 includes, but is not limited to, a focal reducer assembly and a field flattener assembly.

[0024] According to the above structural design, when the astronomical telescope in this embodiment is actually used, one end of the cylinder body 1 is connected to a conventional objective lens assembly 5, and the other end of the cylinder body 1 is connected to the corresponding assembly according to actual needs. For example, when the user needs to observe distant celestial bodies with the naked eye, the astronomical telescope needs to be adjusted to the visual state, and the cylinder body 1 is correspondingly connected to a corner mirror assembly or other assemblies with an eyepiece. When the user needs to take pictures of distant celestial bodies with a camera, the astronomical telescope needs to be adjusted to the camera state, and the cylinder body 1 is correspondingly connected to a camera or other devices with a shooting function.

[0025] When the astronomical telescope is in the visual state or the camera state, there is no need to install a focal reducer assembly, a field flattener assembly and other built-in lens groups 7 in the cylinder body 1.

[0026] In the camera state, when the user needs to install a focal reducer assembly or a field flattener assembly, the user can insert the focal reducer assembly or the field flattener assembly into the barrel 1 and screw the focal reducer assembly or the field flattener assembly so that it engages with the internal threads on the fixing ring 2 through the external threads on its outer surface to fix its position.

[0027] Referring Figures 1 to 3 As shown, the barrel 1 in this embodiment includes a main lens barrel 101, a focusing base 102 and a telescopic tube 103. The focusing base 102 is installed at one end of the main lens barrel 101. The telescopic tube 103 is sleeved inside the focusing base 102. The main lens barrel 101 and the telescopic tube 103 are located on opposite sides of the focusing base 102. The main lens barrel 101 is used to install the objective lens assembly 5. The telescopic tube 103 is used to install the angled mirror assembly or the camera, and the telescopic tube 103 can move along the axis of the focusing base 102. The fixing ring 2 is provided on the inner wall of the main lens barrel 101 or the inner wall of the focusing base 102.

[0028] When the astronomical telescope is in the visual state or the conventional camera state, the user can move the position of the telescopic tube 103 to adjust the distance between the angled mirror assembly or the camera and the objective lens assembly 5.

[0029] When the astronomical telescope is in the camera state and a focal reducer assembly or a field flattener assembly is installed, the user can move the position of the telescopic tube 103 to adjust the distance between the camera and the focal reducer assembly or the field flattener assembly so that the camera is located at the focus of the focal reducer assembly or the field flattener assembly.

[0030] Preferably, the fixing ring 2 in this embodiment is provided on the inner wall of the focusing base 102. And, the telescopic tube 103 in this embodiment is used to house the built-in lens group 7, that is, the built-in lens group 7 is sleeved inside the telescopic tube 103.

[0031] Referring Figures 1 to 3 As shown, in order to facilitate the user to move the telescopic tube 103, the astronomical telescope in this embodiment further includes a rack 4 provided on the outer wall of the telescopic tube 103 and a gear 3 rotatably connected to the focusing base 102. At least part of the gear 3 extends into the focusing base 102 and meshes with the rack 4. The rack 4 can be fixed to the outer wall of the telescopic tube 103 by bolts, or can also be fixed to the outer wall of the telescopic tube 103 by bonding, integral molding or other conventional methods.

[0032] Specifically, an avoidance groove for housing the rack 4 can be opened on the inner wall of the focusing base 102. The length of the avoidance groove is greater than the length of the rack 4. An opening penetrating the focusing base 102 is opened in the avoidance groove for housing the gear 3.

[0033] Further, the astronomical telescope in this embodiment further includes a handwheel connected to the shaft portion of the gear 3. The handwheel is located outside the focusing seat 102, facilitating the user to drive the gear 3 to rotate so as to drive the telescopic tube 103 to move along the focusing seat 102.

[0034] Preferably, to facilitate the better combination of the built-in lens group 7 with the fixing ring 2, the inner diameter of the fixing ring 2 in this embodiment is less than or equal to the inner diameter of the telescopic tube 103.

[0035] Refer to Figure 2 and Figure 3 As shown, a first stop member 8 is provided on the circumferential surface of the built-in lens group 7 in this embodiment. The first stop member 8 abuts against one side of the fixing ring 2 close to the telescopic tube 103.

[0036] Specifically, the first stop member 8 can be set as a circumferentially protruding annular structure or a block structure. Alternatively, the corresponding end of the built-in lens group 7 can also be set as a stepped structure.

[0037] Refer to Figure 2 and Figure 3 As shown, the astronomical telescope in this embodiment further includes an objective lens assembly 5, a connector 6, and a built-in lens group 7. The objective lens assembly 5 is sleeved in the main lens barrel 101. The connector 6 is detachably installed at one end of the telescopic tube 103 away from the fixing ring 2. The connector 6 is used to connect the corner mirror assembly or the camera. The built-in lens group 7 is at least partially sleeved in the telescopic tube 103 and is connected by the cooperation of the external thread and the internal thread on its circumferential surface.

[0038] It should be noted that the model of the connector 6 in this embodiment can be adaptively adjusted according to the built-in lens group 7. For example, when the built-in lens group 7 is not installed in the focusing seat 102, the connector 6 is selected as a model that can connect the corresponding corner mirror assembly and the camera. When the built-in lens group 7 is installed in the focusing seat 102, the connector 6 is selected as a model that can connect the corresponding camera.

[0039] Preferably, the outer diameter of the built-in lens group 7 in this embodiment is less than the inner diameter of the telescopic tube 103.

[0040] Further, refer to Figure 2 and Figure 3 As shown, one end of the connector 6 in this embodiment is sleeved in the focusing seat 102. A threaded hole or a locking groove is provided at this end of the connector 6. The astronomical telescope further includes a locking bolt 9 provided on the focusing seat 102. The locking bolt 9 extends into the threaded hole or the locking groove.

[0041] Refer to Figure 2 and Figure 3 As shown, a second stop member 10 is provided on the circumferential surface of the connector 6 in this embodiment. The second stop member 10 abuts against the focusing seat 102.

[0042] Specifically, the second stopper 10 can be configured as a circumferentially protruding annular structure or a block structure. Alternatively, the corresponding end of the joint 6 can also be configured as a step-shaped structure.

[0043] Reference Figure 2 and Figure 3 As shown, in this embodiment, one end of the main lens barrel 101 is sleeved in the focusing seat 102, and the end of the main lens barrel 101 abuts against the fixing ring 2 to position the focusing seat 102 and the main lens barrel 101.

[0044] Preferably, the main lens barrel 101 and the focusing seat 102 can be connected by threaded connection.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An astronomical telescope, characterized in that, Comprising: A barrel (1), one end of which is used to install a corner mirror assembly or a camera, and the other end is used to install an objective lens assembly (5); A fixing ring (2) is provided on the inner wall of the barrel (1). An internal thread is provided on the inner wall of the fixing ring (2), and the internal thread is used for mating connection with an external thread on the outer wall of the built-in lens group (7). The built-in lens group (7) is a focal reducing lens assembly or a field flattener lens assembly.

2. The astronomical telescope according to claim 1, characterized in that, The barrel (1) includes a main barrel (101), a focusing base (102) installed at one end of the main barrel (101), and a telescopic tube (103) sleeved inside the main barrel (101). The main barrel (101) and the telescopic tube (103) are located on opposite sides of the focusing base (102). The main barrel (101) is used to install the objective lens assembly (5), and the telescopic tube (103) is used to install a corner mirror assembly or a camera and can move along the axis line of the focusing base (102). The fixing ring (2) is provided on the inner wall of the main barrel (101) or the inner wall of the focusing base (102).

3. The astronomical telescope according to claim 2, characterized in that, The fixing ring (2) is provided on the inner wall of the focusing base (102), and the telescopic tube (103) is used to accommodate the built-in lens group (7).

4. The astronomical telescope according to claim 2, characterized in that, The astronomical telescope further includes a rack (4) provided on the outer wall of the telescopic tube (103) and a gear (3) rotatably connected to the focusing base (102). At least a part of the gear (3) extends into the focusing base (102) and is meshed with the rack (4).

5. The astronomical telescope according to claim 3, characterized in that, The inner diameter of the fixing ring (2) is less than or equal to the inner diameter of the telescopic tube (103).

6. The astronomical telescope according to claim 3, characterized in that, The astronomical telescope further includes: An objective lens assembly (5) sleeved inside the main barrel (101); A connector (6) detachably installed at one end of the telescopic tube (103) away from the fixing ring (2). The connector (6) is used to connect a corner mirror assembly or a camera; A built-in lens group (7) is at least partially sleeved inside the telescopic tube (103) and is connected by mating of an external thread on its circumferential surface with an internal thread.

7. The astronomical telescope according to claim 6, characterized in that, A first stop member (8) is provided on the circumferential surface of the built-in lens group (7), and the first stop member (8) abuts against one side of the fixing ring (2) close to the telescopic tube (103).

8. The astronomical telescope according to claim 6, wherein, The outer diameter of the built-in lens group (7) is less than the inner diameter of the telescopic tube (103).

9. The astronomical telescope according to claim 6, characterized in that, One end of the connector (6) is sleeved inside the focusing base (102). A threaded hole or a locking groove is provided at this end of the connector (6). The astronomical telescope further includes a locking bolt (9) provided on the focusing base (102), and the locking bolt (9) extends into the threaded hole or the locking groove.

10. The astronomical telescope according to claim 9, wherein A second stop member (10) is provided on the circumferential surface of the connector (6), and the second stop member (10) abuts against the focusing base (102).

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