Optometry mechanism with double-platform compact structure

Abstract

The utility model discloses an optometry mechanism with a double-platform compact structure, which comprises a first platform, a second platform, an object image module, a focusing assembly and a driving assembly, the object image module is arranged on the second platform, the focusing assembly and the driving assembly are arranged on the first platform, and the driving assembly is arranged on the second platform. The second platform is installed above the first platform and provided with a notch for the focusing assembly to move, and the driving assembly controls the focusing assembly to be far away from or close to the object image module for focusing. According to the technical scheme, the second platform is arranged on the first platform, so that the modules and the components on the platforms can be tightly mounted and matched, the size of the whole device is effectively reduced, and the portability is improved.

Description

Technical Field

[0001] The utility model relates to the field of optical instruments, in particular to an optometry mechanism with a dual-platform compact structure. Background Art

[0002] The interior of an optometry device usually includes an object-image module, a human-eye imaging module, a relay lens module, a laser lamp assembly, and a beam splitting assembly for controlling the change of the optical path. The object-image module needs to be controlled for focusing through a movable focusing assembly. Since these modules and components are all arranged at the same horizontal height, the arrangement of these modules and components results in a relatively large volume of the entire device, which is likely to affect the placement of other optometry devices. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide an optometry mechanism with a dual-platform compact structure, which integrates the internal modules and components, fully utilizes the space inside the device, and thus reduces the volume of the entire device.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an optometry mechanism with a dual-platform compact structure, including a first platform, a second platform, an object-image module, a focusing assembly, and a driving assembly. The object-image module is installed on the second platform, the focusing assembly and the driving assembly are installed on the first platform. The second platform is installed above the first platform, and a notch for the movement of the focusing assembly is provided on the second platform. The driving assembly controls the focusing assembly to move away from or close to the object-image module for focusing.

[0005] As a further improvement of the utility model, a position sensor for detecting the maximum stroke of the focusing assembly is provided on the second platform.

[0006] As a further improvement of the utility model, the focusing assembly includes a focusing lens, a connecting plate, and a guide rail. The connecting plate is movably connected to the guide rail, the guide rail is fixedly connected to the first platform, the focusing lens is installed on the connecting plate and is arranged corresponding to the object-image module. A through hole for the passage of the optical path is provided at the position of the connecting plate corresponding to the object-image module. The driving assembly drives the connecting plate to move on the guide rail to control the focusing lens to approach or move away from the object-image module at the notch.

[0007] As a further improvement of the utility model, a slider is provided between the connecting plate and the guide rail, and the connecting plate is fixedly connected to the slider.

[0008] As a further improvement of the utility model, a detection plate is fixedly connected to one side of the connecting plate, and the position sensor is arranged on the second platform corresponding to the movement track of the detection plate.

[0009] As a further improvement of the present utility model, a limit seat is provided on the guide rail in the direction of the slider's movement, and this limit seat is used to limit the maximum stroke of the connecting plate.

[0010] As a further improvement of the present utility model, the driving assembly includes a driving motor installed on the first platform, a lead screw installed on the driving motor, and a nut seat installed on the lead screw. The nut seat is fixedly connected to the connecting plate. A first through hole for the lead screw to pass through is provided on the connecting plate, and the lead screw is driven by the driving motor to drive the connecting plate to move on the guide rail.

[0011] As a further improvement of the present utility model, a second through hole for the lead screw to pass through is provided at the position of the connecting plate corresponding to the lead screw.

[0012] As a further improvement of the present utility model, a cushion block is provided between the guide rail and the first platform.

[0013] As a further improvement of the present utility model, the position sensor is fixedly connected to the second platform by bolts, and a threaded seat is provided between the position sensor and the second platform.

[0014] The beneficial effects of the present utility model: By providing the second platform on the first platform, the installation and cooperation between the modules and components on the platform can be made tight, thereby effectively reducing the volume of the entire device and improving portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 is a driving schematic diagram of the focusing component of an embodiment of the present utility model.

[0017] Reference numerals in the drawings: 1, first platform; 101, position sensor; 102, detection plate; 2, second platform; 21, notch; 3, object image module; 4, focusing component; 41, focusing lens; 42, connecting plate; 43, guide rail; 44, limit seat; 5, driving assembly; 51, driving motor; 52, lead screw; 53, nut seat; 54, first through hole; 55, second through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will further elaborate on the present utility model in combination with the embodiments given in the drawings.

[0019] Refer to Figure 1-2As shown, an optometry mechanism with a double-platform compact structure includes a first platform 1, a second platform 2, an object-image module 3, a focusing assembly 4, and a driving assembly 5. The object-image module 3 is installed on the second platform 2, and the focusing assembly 4 and the driving assembly 5 are installed on the first platform 1. The second platform 2 is installed above the first platform 1 and a notch 21 for the focusing assembly 4 to move is provided on the second platform 2. The driving assembly 5 controls the focusing assembly 4 to move away from or close to the object-image module 3 for focusing. By arranging the second platform 2 on the first platform 1, the installation between each component and the module can be tight, which can effectively reduce the volume of the entire device. The second platform 2 can also integrate more modules or components in the equipment to facilitate a more reasonable layout of the internal space.

[0020] A position sensor 101 for detecting the maximum stroke of the focusing component 4 is provided on the second platform 2. The position sensor 101 is provided to prevent the focusing component 4 from exceeding the stroke and causing mechanical collision or damage. The focusing component 4 includes a focusing lens 41, a connecting plate 42, and a guide rail 43. The connecting plate 42 is movably connected to the guide rail 43, and the guide rail 43 is fixedly connected to the first platform 1. The focusing lens 41 is installed on the connecting plate 42 and is arranged corresponding to the object-image module 3. The connecting plate 42 is provided with a through hole for the light path to pass through at the position corresponding to the object-image module 3. The light path emitted by the object-image module 3 can enter the focusing lens 41 through the through hole. The driving component 5 drives the connecting plate 42 to move on the guide rail 43 to control the focusing lens 41 to approach or move away from the object-image module 3 at the notch 21. The guide rail 43 installed on the first platform 1 enables the focusing lens 41 to move in a straight line along the guide rail 43 to avoid deviation or shaking during the movement. In order to facilitate the adjustment of the installation height of the guide rail 43, a pad is provided between the guide rail 43 and the first platform 1. In this embodiment, the notch 21 is semi-open, which provides sufficient range of movement for the focusing component 4 and also reduces the redundancy of the internal space. In other embodiments, the notch 21 can be in the shape of a through hole, and the connecting plate 42 is further guided by the inner wall surface of the through hole.

[0021] A slider is provided between the connecting plate 42 and the guide rail 43, and the connecting plate 42 is fixedly connected to the slider. The slider cooperates with the guide rail 43 to make the installation of the connecting plate 42 more convenient. A detection plate 102 is fixedly connected to one side of the connecting plate 42. The position sensor 101 is arranged on the trajectory of the movement of the detection plate 102 corresponding to the second platform 2. In this embodiment, the position sensor 101 is fixedly connected to the second platform 2 by bolts. A threaded seat is provided between the position sensor 101 and the second platform 2. The threaded seat is provided to adjust the height of the position sensor 101 so that the position sensor 101 and the detection plate 102 can fully cooperate. The guide rail 43 is provided with a limit seat 44 in the direction of the slider movement. The limit seat 44 is used to limit the maximum stroke of the connecting plate 42.

[0022] The driving assembly 5 includes a driving motor 51 mounted on the first platform 1, a lead screw 52 mounted on the driving motor 51, and a nut block 53 mounted on the lead screw 52. The nut block 53 is fixedly connected to the connecting plate 42. A first through hole 54 for the lead screw 52 to pass through is provided on the connecting plate 42. The lead screw 52 is driven by the driving motor 51 to drive the connecting plate 42 to move on the guide rail 43. A second through hole 55 for the lead screw 52 to pass through is provided at the position of the connecting plate 42 corresponding to the lead screw 52. The setting of the second through hole 55 enables the installation length of the lead screw 52 to be increased, thereby increasing the moving stroke of the connecting plate 42 on the guide rail 43. In this embodiment, the driving assembly 5 is mounted directly below the object-image module 3. The driving motor 51 is mounted on the first platform 1 through a motor mounting bracket, so that the lead screw 52, the first through hole 54, and the second through hole 55 are on the same axis.

[0023] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An optometry mechanism with a double-platform compact structure, characterized in that: The invention comprises a first platform, a second platform, an object-image module, a focusing assembly and a driving assembly, wherein the object-image module is mounted on the second platform, the focusing assembly and the driving assembly are mounted on the first platform, the second platform is mounted above the first platform and a notch is provided on the second platform for the movement of the focusing assembly, and the driving assembly controls the focusing assembly to move away from or close to the object-image module for focusing.

2. The optometry mechanism with a double-platform compact structure according to claim 1, characterized in that: The focusing assembly includes a focusing lens, a connecting plate, and a guide rail. The connecting plate is movably connected to the guide rail, and the guide rail is fixedly connected to the first platform. The focusing lens is mounted on the connecting plate and arranged corresponding to the object-image module. The connecting plate is provided with a through hole for the light path to pass through at a position corresponding to the object-image module. The driving assembly drives the connecting plate to move on the guide rail to control the focusing lens to approach or move away from the object-image module at the notch.

3. The optometry mechanism with a double-platform compact structure according to claim 2, characterized in that: A sliding block is provided between the connecting plate and the guide rail, and the connecting plate is fixedly connected to the sliding block.

4. The optometry mechanism with a double-platform compact structure according to claim 2 or 3, characterized in that: The second platform is provided with a position sensor for detecting the maximum travel of the focusing assembly.

5. The optometry mechanism with a double-platform compact structure according to claim 4, characterized in that: A detection plate is fixedly connected to one side of the connection plate, and the position sensor is arranged on a track of the second platform corresponding to the movement of the detection plate.

6. The optometry mechanism with a double-platform compact structure according to claim 5, characterized in that: The position sensor is fixedly connected to the second platform by means of bolts, and a threaded seat is provided between the position sensor and the second platform.

7. The optometry mechanism with a double-platform compact structure according to claim 2 or 3, characterized in that: The guide rail is provided with a limit seat in the direction in which the slider moves, and the limit seat is used to limit the maximum stroke of the connecting plate.

8. The optometry mechanism with a double-platform compact structure according to claim 2 or 3, characterized in that: The driving assembly includes a driving motor installed on the first platform, a screw rod installed on the driving motor, and a nut seat installed on the screw rod. The nut seat is fixedly connected to the connecting plate. The connecting plate is provided with a first through hole for the screw rod to pass through. The screw rod is driven by the driving motor to drive the connecting plate to move on the guide rail.

9. The optometry mechanism with a double-platform compact structure according to claim 8, characterized in that: The connection plate is provided with a second through hole at a position corresponding to the screw rod for the screw rod to pass through.

10. The optometry mechanism with a double-platform compact structure according to claim 2 or 3, characterized in that: A cushion block is provided between the guide rail and the first platform.

Images