Eye movement detection dual-lens switching mechanism

Abstract

The utility model relates to the technical field of eye movement detection, and discloses an eye movement detection double-lens switching mechanism which comprises an end cover, an inner ring is arranged on the inner side of the end cover, a first lens piece and a second lens piece are arranged on the inner side of the inner ring respectively, the outer side of the first lens piece and the outer side of the second lens piece are fixedly connected with arc-shaped pieces, and the arc-shaped pieces are fixedly connected with the inner ring. A lantern ring located between the first lens piece and the second lens piece is arranged on the inner side of the arc-shaped piece, a rotating rod is fixedly installed in the lantern ring, the surface of the inner ring is sequentially sleeved with an inner ratchet tooth ring and an outer ratchet tooth ring, the outer side of the inner ring is sleeved with an outer adjusting ring, and the inner ratchet tooth ring and the outer ratchet tooth ring can be adjusted by rotating the outer adjusting ring. And dual-lens switching is upgraded to rotary one-key switching from detachable tedious operation. The core value is that the switching efficiency meets the requirements of medical first-aid scenes. The structure is particularly suitable for ophthalmic diagnosis and reduces the waiting time of the patient.

Description

Technical Field

[0001] This utility model belongs to the field of eye movement detection technology, and specifically relates to a dual-lens switching mechanism for eye movement detection. Background Technology

[0002] Eye-tracking technology is a technique that tracks and analyzes parameters such as eye movement trajectory, fixation point, and fixation duration. It is widely used in fields such as psychology, neuroscience, human-computer interaction, and marketing. Based on the optical characteristics of the human eye (such as corneal reflection and pupil imaging), eye movements are captured by devices such as cameras and infrared light sources, and then the eye-tracking data is analyzed by algorithms. Specifically, it includes corneal reflection method and pupil tracking method.

[0003] In medical diagnostic scenarios, current technologies require telephoto lenses for fundus examinations and short-focal-length lenses for routine eye tracking. Existing technologies cannot quickly switch between the two focal lengths. Switching lenses on certain ophthalmic devices requires manual plugging and unplugging, which takes a long time per operation and affects diagnostic efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an eye-tracking detection dual-lens switching mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an eye-tracking detection dual-lens switching mechanism, including an end cap, an inner ring on the inner side of the end cap, a lens component one and a lens component two respectively on the inner side of the inner ring, an arc-shaped component fixedly connected to the outer sides of the lens component one and the lens component two, a collar located between the lens component one and the lens component two on the inner side of the arc-shaped component, a rotating rod fixedly installed inside the collar, an inner ratchet ring and an outer ratchet ring sequentially sleeved on the surface of the inner ring, and an outer adjustment ring sleeved on the outer side of the inner ring.

[0006] Preferably, a protective lens is embedded in the surface of the end cap and located on one side of the lens element.

[0007] Preferably, there are two arc-shaped components, and a support block is fixedly installed on the outer side of each arc-shaped component. The support block is fixedly connected to the inner side of the inner ring.

[0008] Preferably, one end of the rotating rod is rotatably connected to the end cap via a bearing.

[0009] Preferably, a support bar is fixedly installed on the outer side of the collar, and the support bar is fixedly connected to the arc-shaped component.

[0010] Preferably, both the external and internal ratchet rings are located inside the end cap, the external ratchet ring is fixedly connected to the end cap, the external and internal ratchet rings engage with each other through ratchet teeth, and the internal ratchet ring is fixedly connected to the inner ring.

[0011] Preferably, the outer adjusting ring and the inner ring are fixedly connected to each other and located at one end of the end cap, and the surface of the outer adjusting ring is provided with anti-slip grooves at equal intervals.

[0012] In summary, this utility model has the following beneficial effects:

[0013] This invention upgrades the dual-lens switching process from a cumbersome disassembly to a one-button rotation by rotating an outer adjustment ring. Its core value lies in its switching efficiency, meeting the needs of medical emergency scenarios. This structure is particularly suitable for ophthalmic diagnosis and reduces patient waiting time.

[0014] This structure, through the coordinated use of the external and internal ratchet rings, provides adjustment stability and ensures uniformity in unidirectional operation. Furthermore, the requirement for a certain torque during ratchet engagement effectively prevents accidental lens shift. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the present invention with the end cap removed;

[0017] Figure 3 This is an exploded view of the outer adjusting ring, inner ring, and arc-shaped component of this utility model;

[0018] Figure 4 This is a schematic diagram showing the inner ring of this utility model being used in conjunction with lens component one and lens component two, respectively;

[0019] Figure 5 This is a schematic diagram showing the combined use of the inner ring, outer adjusting ring, outer ratchet ring, and inner ratchet ring of this utility model;

[0020] Figure 6 This is a cross-sectional view of the end cap of this utility model used in conjunction with the external and internal ratchet rings;

[0021] Figure 7 This is a cross-sectional view of the external and internal ratchet rings of this utility model used together.

[0022] Reference numerals in the attached diagram: 1. End cap; 101. Protective lens; 2. Inner ring; 201. Support block; 3. Arc-shaped part; 301. Collar; 302. Support bar; 4. Rotating rod; 5. Lens component one; 6. Lens component two; 7. External ratchet ring; 701. Internal ratchet ring; 8. External adjusting ring; 801. Anti-slip groove. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0025] refer to Figures 1-7 An eye-tracking dual-lens switching mechanism includes an end cap 1, an inner ring 2 on the inner side of the end cap 1, and lens component 5 and lens component 6 respectively on the inner side of the inner ring 2. An arc-shaped component 3 is fixedly connected to the outer sides of lens component 5 and lens component 6. A collar 301 is located between lens component 5 and lens component 6 on the inner side of the arc-shaped component 3. A rotating rod 4 is fixedly installed inside the collar 301. An inner ratchet ring 701 and an outer ratchet ring 7 are sequentially fitted onto the surface of the inner ring 2. An outer adjustment ring 8 is fitted onto the outer side of the inner ring 2. This invention upgrades the dual-lens switching from a cumbersome disassembly operation to a one-button rotational switching by rotating the outer adjustment ring 8. Its core value lies in its switching efficiency meeting the needs of medical emergency scenarios. This structure is particularly suitable for ophthalmic diagnosis and reduces patient waiting time.

[0026] The end cap 1 has a protective lens 101 embedded in its surface, located on one side of the lens component 5. The protective lens 101 is used in conjunction with the lens component located in the corresponding position. Its material is transparent and has a protective effect.

[0027] There are two arc-shaped parts 3. Each arc-shaped part 3 has a support block 201 fixedly installed on its outer side. The support block 201 is fixedly connected to the inner side of the inner ring 2. The arc-shaped part 3 and the inner ring 2 will be connected and fixed through the support block 201.

[0028] One end of the rotating rod 4 is rotatably connected to the end cover 1 via a bearing. The bearing enables the rotating rod 4 to rotate smoothly inside the end cover 1 and provides support from the auxiliary collar 301.

[0029] A support bar 302 is fixedly installed on the outer side of the collar 301. The support bar 302 is fixedly connected to the arc-shaped part 3. The collar 301 and the arc-shaped part 3 are supported and fixed by the support bar 302.

[0030] Both the external ratchet ring 7 and the internal ratchet ring 701 are located inside the end cap 1. The external ratchet ring 7 and the end cap 1 are fixedly connected to each other. The external ratchet ring 7 and the internal ratchet ring 701 are engaged with each other through ratchet teeth. The internal ratchet ring 701 is fixedly connected to the inner ring 2. The rotation of the inner ring 2 will drive the internal ratchet ring 701 to rotate. The engagement of the ratchet teeth will cause the internal ratchet ring 701 to rotate unidirectionally inside the external ratchet ring 7. The engaged ratchet teeth cannot cause the internal ratchet ring 701 to rotate in the opposite direction inside the external ratchet ring 7. This setting will ensure the stability of the switching mechanism after adjustment.

[0031] The outer adjusting ring 8 and the inner ring 2 are fixedly connected to each other and located at one end of the end cap 1. Anti-slip grooves 801 are evenly spaced on the surface of the outer adjusting ring 8. The outer adjusting ring 8 rotates in cooperation with the inner ring 2. The anti-slip grooves 801 ensure the friction between the operator and the outer adjusting ring 8.

[0032] Working Principle: In use, the end cap 1 is connected and fixed to the actual eye-tracking detection machine, ensuring stable support for the switching mechanism. When switching lenses, the operator rotates the outer adjustment ring 8, where the anti-slip groove 801 ensures friction between the operator and the outer adjustment ring 8. As the outer adjustment ring 8 drives the inner ring 2 to rotate, the inner ring 2 simultaneously drives the inner ratchet ring 701 to rotate. Through the interlocking of the ratchet teeth, the inner ratchet ring 701 rotates unidirectionally inside the outer ratchet ring 7. The interlocking ratchet teeth prevent the inner ratchet ring 701 from rotating in the opposite direction inside the outer ratchet ring 7. This design ensures the stability of the switching mechanism after adjustment. The inner ring 2 drives the arc-shaped component 3 to rotate synchronously via the support block 201. The arc-shaped component 3, via the support bar 302, drives the collar 301 to move and adjust with lens component 5 and lens component 6. The rotating rod 4, through the bearing, cooperates with the collar 301 and the inner ring 2 to achieve stability with the end cap 1 and rotate in coordination with it. At this time, the switching status of lens component 5 and lens component 6 can be directly seen through the protective lens 101.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An eye-tracking dual-lens switching mechanism, comprising an end cap (1), characterized in that: The end cap (1) has an inner ring (2) on its inner side. The inner ring (2) has a lens component one (5) and a lens component two (6) on its inner side. The outer sides of the lens component one (5) and the lens component two (6) are fixedly connected to each other by an arc-shaped component (3). The inner side of the arc-shaped component (3) has a collar (301) located between the lens component one (5) and the lens component two (6). The collar (301) has a rotating rod (4) fixedly installed inside. The inner ring (2) has an inner ratchet ring (701) and an outer ratchet ring (7) sequentially sleeved on its surface. The outer side of the inner ring (2) has an outer adjusting ring (8) sleeved on its outer side.

2. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: The end cap (1) has a protective lens (101) embedded in its surface on one side of the lens component (5).

3. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: There are two arc-shaped parts (3), and a support block (201) is fixedly installed on the outer side of each arc-shaped part (3). The support block (201) is fixedly connected to the inner side of the inner ring (2).

4. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: One end of the rotating rod (4) is rotatably connected to the end cover (1) via a bearing.

5. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: A support bar (302) is fixedly installed on the outer side of the collar (301), and the support bar (302) is fixedly connected to the arc-shaped part (3).

6. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: The external ratchet ring (7) and the internal ratchet ring (701) are both located inside the end cap (1). The external ratchet ring (7) and the end cap (1) are fixedly connected to each other. The external ratchet ring (7) and the internal ratchet ring (701) are interlocked by ratchet teeth. The internal ratchet ring (701) and the inner ring (2) are fixedly connected to each other.

7. The eye-tracking detection dual-lens switching mechanism according to claim 1, characterized in that: The outer adjusting ring (8) is fixedly connected to the inner ring (2) and is located at one end of the end cap (1). Anti-slip grooves (801) are provided at equal intervals on the surface of the outer adjusting ring (8).

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