Focusing device built-in integrated camera angle regulator

Abstract

The utility model provides an integrated camera angle regulator with a built-in focalizer, and belongs to the technical field of focalizers. Comprising a focalizer outer cylinder and a focalizer inner cylinder, the focalizer inner cylinder is arranged in the focalizer outer cylinder, a CAA rotating cylinder is rotationally installed in the focalizer inner cylinder, two CAA rotating bearings are arranged at the two ends of the outer edge face of the CAA rotating cylinder in a sleeving mode respectively, and outer rings of the two CAA rotating bearings are embedded and fixed to the two ends in the focalizer inner cylinder respectively; one end of the focusing device inner cylinder extends out of the port of the focusing device outer cylinder and is fixedly provided with an annular CAA rotating dial, and the inner wall of the CAA rotating dial is provided with a movable CAA locking ring. According to the utility model, the CAA assembly structure is arranged in the focalizer, so that the precision, strength and stability of the CAA are improved structurally, the use effect is good, and compared with a mode of externally arranging the CAA assembly in the prior art, the CAA assembly structure can avoid occupying an optical path and provide more space for other accessories of a camera system through the built-in integrated CAA.

Description

Technical Field

[0001] The utility model relates to the technical field of focusers, in particular to a focuser with a built-in integrated camera angle adjuster. Background Art

[0002] Camera Angle Adjuster (CAA) is a rotating device widely used in astronomical telescope photography systems to adjust the camera installation angle, thereby achieving camera composition at any angle.

[0003] At present, the existing camera angle adjuster is generally an independent mechanism, usually installed in front of the camera and after the focuser. Figure 1 As shown, if the camera 02 has a flat field correction lens, it is generally installed behind the correction lens. When in use, when the system has a correction lens, since there is a relatively fixed installation spacing requirement between the correction lens and the camera (correction lens back intercept), and the camera angle adjuster 01 is installed between the two, it directly occupies a certain distance of the back intercept (optical path), which may cause insufficient space for other accessories that originally need to be installed between the two (such as installing a filter wheel, an off-axis guider OAG), resulting in some accessories cannot be installed.

[0004] At the same time, when the camera angle adjuster is used in a Newtonian reflecting astronomical telescope 03, since the focus of the primary mirror is reflected by the secondary mirror outside the lens barrel, the closer the focus is to the lens barrel, the smaller the secondary mirror size is, and the smaller the shielding ratio of the primary mirror is, and vice versa. Therefore, it is usually required that the distance occupied by the focus seat is as short as possible to facilitate the use of a smaller secondary mirror, but if a camera angle adjuster is additionally installed, it will cause a problem of out-of-focus in some specific reflecting telescope systems.

[0005] In addition, in addition to the focusing problem mentioned above, traditional camera angle adjusters are usually designed and manufactured to be relatively thin due to thickness limitations, and their strength and stability are not good enough. If the size and weight of the back-end photography system are relatively large, it will also cause the optical axis to be unstable and affect the photography effect.

[0006] Therefore, the present application provides a focuser with a built-in integrated camera angle adjuster to solve the above technical problems. Utility Model Content

[0007] The utility model aims to provide a camera angle adjuster with a built-in focuser to solve the above technical problems raised in the background technology. To this end, the utility model provides the following technical solutions:

[0008] A camera angle adjuster with built-in focuser includes a focuser outer cylinder and a focuser inner cylinder, wherein the focuser inner cylinder is arranged inside the focuser outer cylinder, a CAA rotating cylinder is rotatably installed inside the focuser inner cylinder, and two CAA rotating bearings are respectively sleeved at both ends of the outer edge surface of the CAA rotating cylinder, and the outer rings of the two CAA rotating bearings are respectively fitted and fixed at both ends of the focuser inner cylinder;

[0009] One end of the focus adjuster inner cylinder extends out of the port of the focus adjuster outer cylinder and is fixed with an annular CAA rotating dial. The inner wall of the CAA rotating dial is provided with a movable CAA locking ring, which surrounds the surface of the CAA rotating cylinder, and the outer edge surface of the CAA rotating dial is provided with a CAA locking screw, which is threadedly inserted into the CAA rotating dial and abuts against the CAA locking ring.

[0010] As a further preferred solution, the surface of the inner cylinder of the focuser is provided with scales along the axial direction.

[0011] As a further preferred solution, a focus adjuster adjusting hand wheel for controlling the extension and retraction of the focus adjuster inner cylinder is installed at the bottom of the focus adjuster outer cylinder.

[0012] As a further preferred solution, a plurality of CAA locking screws are provided and are evenly distributed on the surface of the CAA rotating dial.

[0013] As a further preferred solution, three CAA locking screws are provided and are distributed in a circular and symmetrical manner along the surface of the CAA rotating dial.

[0014] As a further preferred solution, a plurality of limiting sliding grooves are provided on the surface of the inner cylinder of the focus adjuster along the axial direction, and a roller cooperating with the limiting sliding grooves on the surface of the inner cylinder of the focus adjuster is installed on the inner side of the outer cylinder of the focus adjuster.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] The utility model embeds the CAA related component structure inside the focuser, does not add it as a separate component in the focusing system, does not increase the thickness of the system, does not occupy the back intercept of the flat field correction lens, and solves the problem that some specific telescopes cannot focus when using CAA and are inconvenient to install other photographic accessories.

[0017] The utility model integrates CAA related component structures into the focuser, which can optimize the length structure of the focuser, and arranges CAA rotating bearings at both ends of the CAA rotating cylinder as rotating supports, which can effectively solve the problems of poor strength and stability of traditional CAA, and will not cause changes in the optical axis during rotation, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0019] Figure 1 It is a structural schematic diagram of an angle adjuster in the prior art used in a camera or a Newtonian reflecting astronomical telescope;

[0020] Figure 2 This is a schematic diagram of the structure of a camera angle adjuster integrated into the focuser;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the CAA rotary dial at the CAA locking ring;

[0022] Figure 4 It is a schematic diagram of the internal structure of the focuser outer cylinder and the focuser inner cylinder;

[0023] Figure 5 It is a schematic diagram of the structure of the CAA locking ring;

[0024] Figure 6 It is a schematic diagram of the structure of the focuser inner cylinder and the CAA rotating cylinder;

[0025] Figure 7 Schematic diagram of the structure of the CAA rotating cylinder.

[0026] [reference numerals]

[0027] 01. Camera angle adjuster; 02. Camera; 03. Newtonian reflecting telescope; 1. Focuser outer cylinder; 2. Focuser inner cylinder; 3. CAA rotating dial; 301. CAA locking ring; 4. CAA locking screw; 5. Focuser adjustment handwheel; 6. CAA rotating cylinder; 601. CAA rotating bearing.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0029] The following is a detailed description of a camera angle adjuster with built-in focuser provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0030] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0031] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0032] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0033] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0034] like Figure 2 , Figure 3 and Figure 4As shown, an embodiment of the utility model provides a camera angle adjuster with built-in integration in a focuser, comprising a focuser outer cylinder 1 and a focuser inner cylinder 2, wherein the focuser inner cylinder 2 is arranged in the focuser outer cylinder 1, and a scale is arranged on the surface of the focuser inner cylinder 2 along the axial direction, and a focuser adjustment hand wheel 5 is installed at the bottom of the focuser outer cylinder 1, and the focuser inner cylinder 2 can be controlled to be telescopically adjusted at the end of the focuser outer cylinder 1 by rotating the focuser adjustment hand wheel 5.

[0035] Among them, with Figure 6 and Figure 7 As shown, a CAA rotating cylinder 6 is rotatably installed in the focuser inner cylinder 2, and two CAA rotating bearings 601 are respectively sleeved on the two ends of the outer edge surface of the CAA rotating cylinder 6, and the outer rings of the two CAA rotating bearings 601 are respectively embedded and fixed on the two ends of the focuser inner cylinder 2, so that the CAA rotating cylinder 6 can be rotatably installed in the focuser inner cylinder 2 by means of the two CAA rotating bearings 601 to form a rotating support, which can ensure the stable rotation of the CAA rotating cylinder 6 and prevent the optical axis from changing during the rotation. This effectively solves the problem of poor strength and stability of the traditional CAA in the prior art due to its thin structure and the reliance on metal hard friction rotation without high-precision rotating support.

[0036] At the same time, a plurality of limiting grooves are provided on the surface of the focus adjuster inner cylinder 2 along the axial direction, and a roller cooperating with the limiting grooves on the surface of the focus adjuster inner cylinder 2 is installed on the inner side of the focus adjuster outer cylinder 1, so that the focus adjuster inner cylinder 2 can stably extend and retract inside the focus adjuster outer cylinder 1.

[0037] In addition, with Figure 5 As shown, one end of the focuser inner cylinder 2 extends out of the port of the focuser outer cylinder 1, and is fixed with an annular CAA rotating dial 3, the inner wall of the CAA rotating dial 3 is provided with a movable CAA locking ring 301, the CAA locking ring 301 surrounds the surface of the CAA rotating cylinder 6, and the outer edge surface of the CAA rotating dial 3 is provided with a CAA locking screw 4, the CAA locking screw 4 is threadedly inserted into the CAA rotating dial 3, and abuts against the CAA locking ring 301. In specific implementation, the CAA locking screws 4 are provided in plurality and are evenly distributed on the surface of the CAA rotating dial 3. In the present embodiment, the CAA locking screws 4 are provided in three pieces and are symmetrically distributed in an annular shape along the surface of the CAA rotating dial 3, which can effectively improve the limiting effect of the CAA locking ring 301.

[0038] The utility model provides a working principle, and the focuser has a built-in integrated camera angle adjuster. In specific implementation, the size of the focuser can be slightly increased, and the CAA structure can be directly embedded in the focuser to form an integral system. The CAA structural member and the focusing inner cylinder are designed as an integrated structure, and the CAA component does not protrude from the focusing cylinder, which directly saves the thickness of the original CAA and increases a certain size to facilitate the subsequent installation of the flat field correction lens.

[0039] At the same time, in the utility model, since the CAA mechanism is built-in, there is no need to consider the thickness size issue, so the thickness of the CAA structural member is first lengthened to increase the rotating contact area. The lengthened size also increases the lateral moment support force during rotation and improves stability. In addition, two thin-walled bearings are added at the front and rear ends of the CAA mechanism as rotating support members to improve the system accuracy and stability.

[0040] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A focuser with a built-in integrated camera angle adjuster, comprising a focuser outer cylinder (1) and a focuser inner cylinder (2), characterized in that: The focuser inner cylinder (2) is arranged in the focuser outer cylinder (1), a CAA rotating cylinder (6) is rotatably mounted in the focuser inner cylinder (2), and two CAA rotating bearings (601) are respectively sleeved on both ends of the outer edge surface of the CAA rotating cylinder (6), and the outer rings of the two CAA rotating bearings (601) are respectively embedded and fixed at both ends of the focuser inner cylinder (2); One end of the focuser inner cylinder (2) extends out of the port of the focuser outer cylinder (1) and is fixed with an annular CAA rotating dial (3); the inner wall of the CAA rotating dial (3) is provided with a movable CAA locking ring (301); the CAA locking ring (301) surrounds the surface of the CAA rotating cylinder (6); and the outer edge surface of the CAA rotating dial (3) is provided with a CAA locking screw (4); the CAA locking screw (4) is threadedly inserted into the CAA rotating dial (3) and abuts against the CAA locking ring (301).

2. The camera angle adjuster with built-in focuser according to claim 1, characterized in that: The surface of the focuser inner cylinder (2) is provided with scales along the axial direction.

3. The camera angle adjuster with built-in focuser according to claim 1, characterized in that: A focus adjuster adjustment hand wheel (5) for controlling the extension and retraction of the focus adjuster inner cylinder (2) is installed at the bottom of the focus adjuster outer cylinder (1).

4. The focuser with built-in integrated camera angle adjuster according to claim 1, characterized in that: A plurality of CAA locking screws (4) are provided and are evenly distributed on the surface of the CAA rotary dial (3).

5. The camera angle adjuster with built-in focuser according to claim 4, characterized in that: The CAA locking screws (4) are provided in three numbers and are distributed symmetrically in a ring shape along the surface of the CAA rotating dial (3).

6. The camera angle adjuster with built-in focuser according to claim 1, characterized in that: The surface of the focus adjuster inner cylinder (2) is provided with a plurality of limiting sliding grooves along the axial direction, and the inner side of the focus adjuster outer cylinder (1) is provided with rollers which cooperate with the limiting sliding grooves on the surface of the focus adjuster inner cylinder (2).

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