CN217561826U

CN217561826U - Front focusing astronomical telescope

Info

Publication number: CN217561826U
Application number: CN202221620826.4U
Authority: CN
Inventors: 高华; 杨锡; 吴鹏
Original assignee: Kunming Sky Rover Optical Co ltd
Current assignee: Kunming Sky Rover Optical Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-10-11
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a preceding focusing astronomical telescope, include: the focusing device comprises a protecting cover A, a protecting cover B, a light shield A, a light shield B, an objective lens, a focusing barrel, a focusing seat and an anti-drop screw; a focusing barrel is arranged on the focusing seat in a sliding mode, an objective lens is arranged at one end of the focusing barrel, a light shield B is arranged on the objective focusing seat, a light shield A is arranged on the light shield B, a protecting cover B is arranged on the light shield A, and a protecting cover A is arranged on the protecting cover B; the other end of the focusing barrel is arranged on the focusing seat through an anti-drop screw. The front focusing seat is arranged, the focusing seat is placed in front, and the lens is directly driven to focus.

Description

Front focusing astronomical telescope

Technical Field

The utility model relates to a telescope technical field, concretely relates to preceding focusing astronomical telescope.

Background

A telescope is an optical instrument that uses lenses or mirrors, as well as other optical devices, to view a remote object. The light passing through the lens is refracted or reflected by the concave mirror to enter the small hole and be converged to form an image, and then the image is seen through a magnifying eyepiece, which is also called a kilo-mile lens. The first function of the telescope is to magnify the field angle of a distant object, so that the human eye can see details with smaller angular distance. The telescope is used for transmitting the light beam collected by the objective lens and much thicker than the pupil diameter (maximum 8 mm) into human eyes, so that the observer can see the dark and weak objects which cannot be seen originally. In 1608, he made the first telescope in history of mankind, inspired by the fact that he accidentally discovered with two lenses he happened to see distant scenes with an eyeglass bushel-lebchi in the netherlands. The invention of Galileo in Italy in 1609 is a 40-fold double-mirror telescope, which is the first practical telescope to be put into scientific application.

The conventional telescope is characterized in that a focusing seat is placed at the rear and drives an eyepiece or a camera to focus. The focusing seat is arranged in the front and directly drives the lens to focus. Thus, a forward focusing astronomical telescope is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a preceding focusing astronomical telescope has realized that the focusing seat is leading, places the focusing seat in the front, and the focusing of direct drive camera lens.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a front focusing astronomical telescope, comprising: the focusing device comprises a protecting cover A, a protecting cover B, a light shield A, a light shield B, an objective lens, a focusing barrel, a focusing seat and an anti-falling screw;

a focusing barrel is arranged on the focusing seat in a sliding mode, an objective lens is arranged at one end of the focusing barrel, a light shield B is arranged on the objective focusing seat, a light shield A is arranged on the light shield B, a protecting cover B is arranged on the light shield A, and a protecting cover A is arranged on the protecting cover B;

the other end of the focusing barrel is arranged on the focusing seat through an anti-drop screw.

Further, the method comprises the following steps of; the focusing mechanism is characterized in that a focusing hand wheel set is arranged on the focusing seat and comprises a focusing gear shaft and a focusing rack, the focusing gear shaft is meshed with the focusing rack, and the focusing rack is arranged on the focusing seat.

Further, the method comprises the following steps of; the focusing seat is provided with a lens tube, the lens tube is provided with a field rotator, and the 2-inch locking head is arranged on the field rotator.

Further, the method comprises the following steps of; two mirror hoops are arranged on the upper portion of the mirror tube, and a lifting handle is arranged on the upper portion of the mirror hoop.

Further, the method comprises the following steps of; the lower part of the mirror hoop is connected with a dovetail plate through a screw, and a dovetail plate bottom plate is horizontally arranged.

Further, the method comprises the following steps of; the walls of the protecting cover A, the protecting cover B, the light shield A and the light shield B are all smoothly arranged.

Compared with the prior art, the utility model discloses an at least, have one of following beneficial effect:

1 avoid conventional focusing seat structure can be because focus section of thick bamboo rear heavy burden too big leads to the focus section of thick bamboo atress after to bring the influence to optical axis and focusing feel and precision.

2, the design of the telescopic double-light shield reduces the volume of the whole machine and is convenient to carry.

3, the focusing seat is provided with a window, so that a user can conveniently distinguish the position of the focusing cylinder.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of the structure of the present invention.

Fig. 3 is a partial view of the middle focusing hand wheel set of the present invention.

In the figure: protecting cover A1, protecting cover B2, lens hood A3, lens hood B4, objective lens 5, focusing tube 6, focusing seat 7, handle 8, anticreep screw 9, image field circulator 10,2 cun locking head 11, focusing hand wheel group 12, dovetail board 13, mirror tube 14, mirror hoop 15, focusing gear axle 16, focusing rack 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

A front focusing astronomical telescope, comprising: the device comprises a protecting cover A1, a protecting cover B2, a light shield A3, a light shield B4, an objective lens 5, a focusing barrel 6, a focusing seat 7 and an anti-falling screw 9;

a focusing barrel 6 is slidably arranged on the focusing base 7, an objective lens 5 is arranged at one end of the focusing barrel 6, a light shield B4 is arranged on the objective focusing base 7, a light shield A3 is arranged on the light shield B4, a protecting cover B2 is arranged on the light shield A3, and a protecting cover A1 is arranged on the protecting cover B2;

the other end of the focusing barrel 6 is arranged on the focusing seat 7 through an anti-drop screw 9;

the focusing hand wheel set 12 is arranged on the focusing seat 7, the focusing hand wheel set 12 comprises a focusing gear shaft 16 and a focusing rack 17, the focusing gear shaft 16 is meshed with the focusing rack 17, and the focusing rack 17 is arranged on the focusing seat 7.

A lens tube 14 is arranged on the focusing seat 7, an image field rotator 10 is arranged on the lens tube 14, and a 2-inch locking head 11 is arranged on the image field rotator 10;

two mirror hoops 15 are arranged at the upper part of the mirror tube 14, and a handle 8 is arranged at the upper part of the mirror hoops 15;

the lower part of the mirror hoop 15 is connected with a dovetail plate 13 through a bolt, and the bottom plate of the dovetail plate 13 is horizontally arranged;

the walls of the protecting cover A1, the protecting cover B2, the light shield A3 and the light shield B4 are all smoothly arranged;

optical focusing: the focusing base 7 and the focusing barrel 6 are in sliding fit with a gap, the focusing hand wheel set 12 is assembled and fixed on the focusing base 7, a focusing gear shaft 16 is arranged in the focusing hand wheel set 12, and the focusing gear shaft 16 can be driven by a rotating hand wheel to synchronously rotate a focusing rack 17. The focusing barrel 6 is fixedly provided with a focusing rack 16, the rack is meshed with a gear shaft, the objective lens group 5 is interconnected with the focusing barrel 6, and the focusing barrel 6 and the objective lens 5 are driven to linearly move back and forth through meshing transmission between the gear and the rack when the focusing hand wheel group 12 is rotated, so that optical focusing is realized.

The telescopic light shield: in lens hood B4 embedding lens hood A3, two lens hoods are constituteed to lens hood A3 and lens hood B4 to fix on focusing tube 6, lens hood A3 is the moving part, and both lens hood A3 and focusing tube 6 pass through the structure spacing, and it can prolong the lens hood overall length outwards to extract focusing tube 6 during the use. The light shield B4 is fixed with the lens tube 14, the light shield A is a movable part, and the light shield A can be directly pulled out when in use.

The image field rotator 10 can rotate freely in 360 degrees in the axial direction, so that a user can adjust the composition when connecting the camera conveniently; the 2 cun locking head 11 is used for connecting an eyepiece and a camera with a standard 2 cun interface.

The working process is as follows:

when the product is used for visual observation or shooting of targets: an eyepiece or a camera is connected to a 2-inch locking head 11 at the tail end of a primary mirror, a protecting cover A1 and a protecting cover B2 are taken down, a light shield A3 is completely pulled out outwards, and a light shield B4 and a focusing seat 7 are fixed. The holding handle 8 fixes the primary lens on a foot rest or a theodolite by utilizing a dovetail plate 13 on a lens hoop 15, aligns the lens barrel to an observation target, rotates a focusing hand wheel on the focusing hand wheel set 12 while observing an ocular lens or a camera picture, is connected with a focusing gear shaft 16, and drives the focusing cylinder 6 and the objective lens 5 to focus until the object is clear by mutually meshing and driving the focusing gear shaft 16 and a focusing rack 17 on the focusing cylinder 6 when the hand wheel is rotated. During focusing, the anti-drop screw 9 on the focusing barrel 6 can prevent the focusing barrel and the lens from dropping outwards. The lens tube 14 is fixedly connected with the focusing base. When the composition is to be adjusted by photographing with the camera, the angle of view can be changed by rotating the field rotator 10.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A forward focusing astronomical telescope, comprising: the method comprises the following steps: the device comprises a protective cover A (1), a protective cover B (2), a light shield A (3), a light shield B (4), an objective lens (5), a focusing barrel (6), a focusing seat (7) and an anti-drop screw (9);

a focusing barrel (6) is slidably arranged on the focusing seat (7), an objective lens (5) is arranged at one end of the focusing barrel (6), a light shield B (4) is arranged on the objective focusing seat (7), a light shield A (3) is arranged on the light shield B (4), a protecting cover B (2) is arranged on the light shield A (3), and a protecting cover A (1) is arranged on the protecting cover B (2);

the other end of the focusing tube (6) is arranged on the focusing seat (7) through an anti-drop screw (9).

2. A forward focusing astronomical telescope according to claim 1, wherein: the focusing mechanism is characterized in that a focusing hand wheel set (12) is arranged on the focusing seat (7), the focusing hand wheel set (12) comprises a focusing gear shaft (16) and a focusing rack (17), the focusing gear shaft (16) is meshed with the focusing rack (17), and the focusing rack (17) is arranged on the focusing seat (7).

3. A forward focusing astronomical telescope according to claim 1, wherein: a lens tube (14) is arranged on the focusing seat (7), an image field rotator (10) is arranged on the lens tube (14), and a 2-inch locking head (11) is arranged on the image field rotator (10).

4. A forward focusing astronomical telescope according to claim 3, wherein: two mirror hoops (15) are arranged on the upper portion of the mirror tube (14), and a lifting handle (8) is arranged on the upper portion of the mirror hoops (15).

5. The front focusing astronomical telescope of claim 4, wherein: the lower part of the mirror hoop (15) is connected with a dovetail plate (13) through a screw, and the bottom plate of the dovetail plate (13) is horizontally arranged.

6. A forward focusing astronomical telescope according to claim 1, wherein: the walls of the protecting cover A (1), the protecting cover B (2), the light shield A (3) and the light shield B (4) are all smoothly arranged.