An external lens structure adapted to an adjustable test light frame

Abstract

This utility model discloses an external lens structure adapted to an adjustable test light frame. It includes a left frame and a right frame, each comprising a mounting bracket secured to a crossbeam and a movable frame positioned in front of the test light frame. The movable frame includes a lens holder and an external lens mounted on it. The mounting bracket has a semi-ring frame suspended from the crossbeam. The bottom of the semi-ring frame has a clamp that holds the top scale block of the test light frame. The semi-ring frame moves synchronously with the adjustment of the pupillary distance of the test light frame via the clamp. The top of the semi-ring frame has a movable connector that connects to the lens holder. This utility model, by including a semi-ring frame on the mounting bracket, allows the external lens to be secured to the crossbeam of the adjustable test light frame, facilitating easy assembly and disassembly. The clamp allows the left and right frames to move synchronously with the adjustment of the pupillary distance of the test light frame. The movable connector allows the operator to install or remove the external lens as needed.

Description

Technical Field

[0001] This utility model belongs to the field of trial lens frame technology, and specifically relates to an external lens structure adapted to an adjustable trial lens frame. Background Technology

[0002] Most trial eyeglasses on the market have 3-5 lens slots in front of each eye, meaning they can insert 3-5 refraction lenses simultaneously in front of the subject's eye. However, for more advanced and precise refraction methods, 3-5 lenses are insufficient, especially in 3D immersive refraction, where polarized lenses are used frequently. Since the angle of a polarized lens is fixed when placed in front of the eye, it doesn't require rotation. Therefore, the market needs a refraction aid that can accurately fix polarized lenses in front of the subject's eye while minimizing the use of the limited lens slots on the trial eyeglass. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an external lens structure that is reasonably designed, simple in structure, easy to use, and adaptable to adjustable test light frames, in order to address the shortcomings of the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An external lens structure adapted to an adjustable test light frame is characterized in that the structure is installed at the crossbeam of the central beam of the adjustable test light frame, and has a left frame and a right frame. The left frame and the right frame each include a mounting bracket that is snapped onto the crossbeam and a movable frame located in front of the test light frame. The movable frame includes a lens frame and an external lens mounted on the lens frame.

[0006] The mounting frame has a semi-ring frame that hangs on a crossbeam. The bottom of the semi-ring frame has a hoop that holds the scale block on the top of the optometry frame. The semi-ring frame moves synchronously with the adjustment of the pupillary distance of the optometry frame through the hoop. The top of the semi-ring frame has a movable connector that connects to the lens frame.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the movable connecting member includes a hinge support provided on the top of the semi-ring frame, and the lens frame is rotatably connected to the hinge support through a horizontally set rotating shaft, so that the movable frame can be in use or in non-use state without disassembling the movable frame.

[0008] The technical problem to be solved by this utility model can also be achieved through the following technical solution: an elastic baffle is provided on the semi-ring frame to accurately position the lens frame at two extreme positions of 90°, which will not affect the rotation of the movable frame and can also limit the rotation angle of the movable frame.

[0009] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the movable connector includes a vertical insertion piece provided on the top of the semi-ring frame and an insertion groove that cooperates with the vertical insertion piece. The insertion groove is provided on the top of the lens frame to realize the quick disassembly and installation of the movable frame.

[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the semi-ring frame includes an arc-shaped body adapted to the rear side of the adjustable test optical mirror frame crossbeam, and the top of the arc-shaped body is provided with two hooks extending forward from the top of the crossbeam, and the movable connecting member is located between the two hooks.

[0011] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the top of the lens frame is provided with an inverted L-shaped support rod, one end of the support rod is movably connected to the semi-ring frame, and the other end of the support rod is fixedly connected to the lens frame, so that a certain distance is reserved between the external lens and the optometry lens.

[0012] Compared with the prior art, this utility model has a semi-ring frame on the mounting frame, which allows the external lens to be snapped into the crossbeam of the adjustable test lens frame, making it easy to install and remove. By setting a clamp, the left and right frames can move synchronously with the adjustment of the pupillary distance of the optometry frame. By setting a movable connector, the operator can install, rotate or remove the external lens according to the usage. Attached Figure Description

[0013] Figure 1 A diagram illustrating the use of the external lens structure of the adjustable test light frame described in this utility model, with the first type of movable connector;

[0014] Figure 2 for Figure 1 Front view of the external lens structure;

[0015] Figure 3 This is a diagram showing the usage state of the external lens structure;

[0016] Figure 4 This is a diagram showing the unused state of the external lens structure;

[0017] Figure 5 Figure 7 illustrates the use of the external lens structure of the adaptive adjustable test light frame of this utility model with a second type of movable connector;

[0018] Figure 6 for Figure 5 Front view of the external lens structure;

[0019] Figure 7 for Figure 6 Top view;

[0020] Figure 8 for Figure 6 Assembly diagram of the external lens structure.

[0021] In the diagram: 1-Lens holder, 2-Semi-ring frame, 3-Rotating shaft, 4-Hoop plate, 5-Elastic baffle, 6-Hook, 7-External lens, 8-Adjustable test light frame, 9-Center beam, 10-Vertical connector, 11-Connecting slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Reference Figure 1 An external lens structure adapted to an adjustable test light frame is provided. The structure is installed at the crossbeam of the beam 9 in the adjustable test light frame 8 and has a left frame and a right frame. The left frame and the right frame each include a mounting bracket that is snapped onto the crossbeam and a movable frame that is located in front of the test light frame 8. The movable frame includes a lens holder 1 and an external lens 7 mounted on the lens holder 1.

[0025] The mounting frame includes a semi-ring frame 2 hanging on a crossbeam. The bottom of the semi-ring frame 2 is provided with a clamp 4 that holds the top scale block of the optometry frame. The semi-ring frame 2 moves synchronously with the adjustment of the pupillary distance of the optometry frame through the clamp 4. The top of the semi-ring frame 2 is provided with a movable connector that connects to the lens frame 1. The semi-ring frame 2 includes an arc-shaped body that adapts to the rear side of the crossbeam of the adjustable test light frame. The top of the arc-shaped body is provided with two hooks 6 that extend forward from the top of the crossbeam. The movable connector is located between the two hooks 6.

[0026] Reference Figure 1-4 The movable connector includes a hinge support located at the top of the semi-ring frame 2, and the lens frame 1 is rotatably connected to the hinge support via a horizontally arranged rotating shaft 3.

[0027] The semi-ring frame 2 is provided with an elastic baffle 5 that enables the lens frame to be accurately positioned at two extreme positions of 90°.

[0028] When working, if an external lens 7 is needed during an eye exam, the lens holder 1 can be rotated downwards to place the external lens 7 in front of the subject's eyes. When the external lens 7 is not needed, the lens holder 1 can be rotated upwards to remove the external lens 7 from the subject's eyes.

[0029] Reference Figure 5-8 The movable connector includes a vertical insertion piece 10 located on the top of the semi-ring frame 2 and an insertion groove 11 that mates with the vertical insertion piece 10. The insertion groove 11 is located on the top of the lens frame 1.

[0030] When working, if an external lens 7 is needed during an eye exam, the insertion slot 11 of the lens holder 1 can be inserted into the vertical insertion piece 10, so that the external lens 7 is placed in front of the subject's eyes. When the external lens 7 is not needed, the lens holder 1 can be removed from the insertion piece 10, so that the external lens 7 is removed from the subject's eyes.

[0031] The top of the lens frame 1 is provided with an inverted L-shaped support rod. One end of the support rod is movably connected to the semi-ring frame, and the other end of the support rod is fixedly connected to the lens frame. By providing the inverted L-shaped support rod, a certain distance is reserved between the external lens and the optometry lens.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An external lens structure adapted to an adjustable test light frame, characterized in that, It is provided with a left mirror frame and a right mirror frame. Both the left and right mirror frames include a mounting bracket that is snapped onto the central beam of the adjustable test light mirror frame and a movable mirror frame located in front of the adjustable test light mirror frame. The movable mirror frame includes a lens frame and an external lens mounted on the lens frame. The mounting frame has a semi-ring frame that hangs on the central beam. The bottom of the semi-ring frame has a hoop that holds the scale block on the top of the optometry frame. The semi-ring frame moves synchronously with the adjustment of the pupillary distance of the optometry frame through the hoop. The top of the semi-ring frame has a movable connector that connects to the lens frame.

2. The external lens structure for an adjustable experimental light frame according to claim 1, characterized in that, The movable connector includes a hinge support located at the top of the semi-circular frame, and the lens frame is rotatably connected to the hinge support via a horizontally arranged rotating shaft.

3. The external lens structure for an adjustable experimental light frame according to claim 2, characterized in that, The semi-ring frame is provided with elastic baffles that enable the lens frame to be accurately positioned at two extreme positions of 90°.

4. The external lens structure for an adjustable test light frame according to claim 1, characterized in that, The movable connector includes a vertical insertion piece located at the top of the semi-ring frame and an insertion slot that mates with the vertical insertion piece. The insertion slot is located at the top of the lens frame.

5. The external lens structure for an adjustable test light frame according to claim 1, characterized in that, The semi-ring frame includes an arc-shaped body that adapts to the rear side of the central beam of the adjustable test optical mirror frame. The top of the arc-shaped body is provided with two hooks that extend forward from the top of the crossbeam, and the movable connector is located between the two hooks.

6. The external lens structure for an adjustable test light frame according to claim 1, characterized in that, The top of the lens frame is provided with an inverted L-shaped support rod. One end of the support rod is movably connected to the semi-ring frame, and the other end of the support rod is fixedly connected to the lens frame.

Images