A type of magnetic binoculars

Abstract

This utility model relates to the field of telescope technology and discloses a magnetically attached binocular telescope, including a telescope body and a movable cap. The telescope body has a central axis in the middle, a first magnetic block fixed at the top of the central axis, a second magnetic block at the bottom of the movable cap, and a buffer layer at the top of the movable cap. Inside the telescope body, from the object side to the image side, are arranged a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentagonal prism, a roof prism, a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens, a fifth eyepiece lens, and a sixth eyepiece lens, which can effectively reduce the pressure of the telescope eyepieces on the observer's eyes.

Description

Technical Field

[0001] This utility model relates to the field of telescope technology, and in particular to a pair of binoculars with magnetic attraction. Background Technology

[0002] When using binoculars, the eyepiece is held close to the observer's eye in order to observe distant objects. This can cause eye strain. Even though the observer may use both hands to support the binoculars, it can still cause eye strain. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a pair of binoculars with magnetic attraction, which aims to solve the problem of eyepiece compression on the observer's eyes in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a magnetic binocular, comprising a lens body and a movable cap, characterized in that: a central axis is provided in the middle of the lens body, a first magnetic block is fixed at the top of the central axis, a second magnetic block is provided at the bottom of the movable cap, and a buffer layer is provided at the top of the movable cap.

[0005] As a further description of the above technical solution:

[0006] The inside of the lens body is provided with the following components in sequence from the object side to the image side: first objective lens, second objective lens, third objective lens, focusing lens, semi-pentagonal prism, roof prism, first eyepiece lens, second eyepiece lens, third eyepiece lens, fourth eyepiece lens, fifth eyepiece lens, and sixth eyepiece lens.

[0007] The first objective lens is a biconvex lens. The second and third objective lenses form a cemented lens. The second objective lens is a biconvex lens, and the third objective lens is a biconcave lens. The focusing lens is a concave-convex lens with its convex surface facing the object side. The first eyepiece lens is a biconcave lens. The second eyepiece lens is a concave-convex lens with its concave surface facing the object side. The third eyepiece lens is a concave-convex lens with its concave surface facing the object side. The fourth and fifth eyepiece lenses form a cemented lens. The fourth eyepiece lens is a concave-convex lens with its convex surface facing the object side. The fifth eyepiece lens is a concave-convex lens with its convex surface facing the object side. The sixth eyepiece lens is a concave-convex lens with its convex surface facing the object side.

[0008] This utility model has the following beneficial effects:

[0009] In this invention, the detachable cap increases the telescope's usability. When the cap is needed, it is placed on the top of the central axis by magnetic attraction, with the first and second magnetic blocks attracting each other. This way, the cap rests on the observer's forehead during use, reducing pressure on the eyes from the eyepiece and making it easier to use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figure 1 The present invention provides an embodiment of a magnetic binocular, comprising a lens body 9 and a movable cap 4, characterized in that: a central axis 18 is provided in the middle of the lens body 9, a first magnetic block 1 is fixed at the top of the central axis 18, a second magnetic block 2 is provided at the bottom of the movable cap 4, and a buffer layer 3 is provided at the top of the movable cap 4.

[0013] As a further description of the above technical solution:

[0014] Inside the lens body 9, from the object side to the image side, there are sequentially arranged the first objective lens 17, the second objective lens 16, the third objective lens 15, the focusing lens 14, the semi-pentagonal prism 13, the roof prism 12, the first eyepiece lens 11, the second eyepiece lens 10, the third eyepiece lens 8, the fourth eyepiece lens 7, the fifth eyepiece lens 6, and the sixth eyepiece lens 5.

[0015] The first objective lens 17 is a biconvex lens. The second objective lens 16 and the third objective lens 15 form a cemented lens. The second objective lens 16 is a biconvex lens, and the third objective lens 15 is a biconcave lens. The focusing lens 14 is a concave-convex lens with its convex surface facing the object side. The first eyepiece lens 11 is a biconcave lens. The second eyepiece lens 10 is a concave-convex lens with its concave surface facing the object side. The third eyepiece lens 8 is a concave-convex lens with its concave surface facing the object side. The fourth eyepiece lens 7 and the fifth eyepiece lens 6 form a cemented lens. The fourth eyepiece lens 7 is a concave-convex lens with its convex surface facing the object side. The fifth eyepiece lens 6 is a concave-convex lens with its convex surface facing the object side. The sixth eyepiece lens 5 is a concave-convex lens with its convex surface facing the object side.

[0016] Throughout the telescope's operation, a compact optical system meets the overall weight requirements, adhering to the trend of small size and low weight. The focusing lens 14, in conjunction with the central axis, enables telescope focusing. The design of the first eyepiece lens 11 and the second eyepiece lens 10 primarily satisfies the planarity requirements of the entire optical system, reducing overall telescope distortion. The use of cemented lenses effectively reduces chromatic aberration.

[0017] During use, the movable cap 4 is fixed to the top of the central axis 18 by the attraction of a magnet. In this way, when in use, the movable cap 4 presses against the observer's forehead, reducing the pressure of the eyepiece on the eyes and effectively preventing visual tremors. It is particularly important to note that when using the movable cap 4, do not wear a mechanical watch, as the flywheel bearings and other components inside a mechanical watch may be affected by the magnetic field, causing problems such as failure of the mechanism.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic binoculars, comprising a mirror body (9), a movable cap (4), characterized in that: A central axis (18) is provided in the middle of the mirror body (9). A first magnetic block (1) is fixed at the top of the central axis (18). A second magnetic block (2) is provided at the bottom of the movable cap (4). A buffer layer (3) is provided at the top of the movable cap (4).

2. The magnetically attached binoculars according to claim 1, characterized in that: Inside the lens body (9), from the object side to the image side, are arranged the first objective lens (17), the second objective lens (16), the third objective lens (15), the focusing lens (14), the semi-pentagonal prism (13), the roof prism (12), the first eyepiece lens (11), the second eyepiece lens (10), the third eyepiece lens (8), the fourth eyepiece lens (7), the fifth eyepiece lens (6), and the sixth eyepiece lens (5). The first objective lens (17) is a biconvex lens. The second objective lens (16) and the third objective lens (15) form a cemented lens. The second objective lens (16) is a biconvex lens, and the third objective lens (15) is a biconcave lens. The focusing lens (14) is a concave-convex lens with the convex surface facing the object side. The first eyepiece lens (11) is a biconcave lens. The second eyepiece lens (10) is a concave-convex lens with the concave surface facing the object side. The third eyepiece lens (8) is a concave-convex lens with the concave surface facing the object side. The fourth eyepiece lens (7) and the fifth eyepiece lens (6) form a cemented lens. The fourth eyepiece lens (7) is a concave-convex lens with the convex surface facing the object side. The fifth eyepiece lens (6) is a concave-convex lens with the convex surface facing the object side. The sixth eyepiece lens (5) is a concave-convex lens with the convex surface facing the object side.

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