Liquid lens zoom fogging system, training instrument and optometry unit

Abstract

The utility model relates to a liquid lens zoom foggy vision system, training instrument and optometry unit, foggy vision system is equipped with eyepiece lens cone, front lens cone, rear lens cone and objective lens cone in proper order along the optical path, the front lens cone is equipped with first lens and second lens in proper order, the rear lens cone is equipped with liquid lens and third lens in proper order, and the objective lens cone is equipped with second lens and third lens in proper order. The front lens barrel and the rear lens barrel form a variable-focus liquid lens telescopic system; a foggy view image display panel is arranged in the objective lens barrel and used for playing foggy view animations. The system further comprises a controller, and the liquid lens, the objective lens cone and the fog view image display panel are electrically connected with the controller. According to the fogging system, the zoom lens can be controlled to zoom through a circuit, video animation is played in combination with the fogging image display panel, switching of different images is achieved, the zoom response is fast, a complex structure and switching images are not needed, the structure is simple and small, the attention of trainees is better attracted, and the fogging effect is improved.

Description

Technical Field

[0001] This utility model relates to refractive measurement and vision training equipment, specifically to a liquid lens zoom fogging system and a training instrument and optometer containing the system. Background Technology

[0002] To obtain a more accurate refractive power, optometrists usually use cycloplegic refraction or fogging training before measurement, if possible, before using a computerized refractometer. Nowadays, most fully automatic computerized refractometers are also equipped with a fast fogging system, which relaxes the lens and reduces measurement errors.

[0003] Vision training devices also use a program that moves objects at varying distances, allowing trainees to focus on and see the objects clearly. This process helps to regulate eye function and is essentially the same as the fogging method.

[0004] Chinese patent document CN21937462U discloses an adjustment device for a fogged image in optometry, including a device housing, a first turntable, an image unit, a second turntable, a movable part, and a linkage assembly. By inserting the movable part into a slot on the second turntable and mechanically locking it, the rotational position of the second turntable is locked, thereby locking the fogged image on the first turntable. This avoids the problem of accidental switching of the fogged image due to accidental activation of the electronic control button. However, the device design is relatively complex, and the mechanical switching of the fogged image is not flexible enough.

[0005] Chinese patent document CN219941175U discloses an intelligent far-flying fog vision training device and an intelligent far-flying fog vision training system, including a control box, a distance sensor, and an operating handle. It detects the distance between the trainee and the computer monitor by the distance sensor, and then selects a preset training program in the memory card for training. Although it is relatively intelligent, the device structure is relatively large and has certain space requirements.

[0006] Chinese patent document CN213608017U discloses a novel adjustable focal length vision training box, but the device requires trainees to wear lenses of different powers to simulate seeing objects at near and far distances, which poses a certain challenge to the trainees' adaptability.

[0007] In addition, training children to observe areas beyond the edges of objects using devices at a distance may lead to insufficient concentration for young children, resulting in a decrease in fogging effectiveness. Therefore, existing fogging training systems urgently need improvement. Utility Model Content

[0008] The purpose of this invention is to overcome the above-mentioned shortcomings and defects, and to propose a rapid fogging system that achieves zooming through a liquid lens. This system can be used for rapid fogging before eye examination to relax the eyes, and can also be used for visual acuity training using the fogging method.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A liquid lens zoom fogging system comprises, along the optical path, an eyepiece tube, a front tube, a rear tube, and an objective tube. The front tube contains a first lens and a second lens, while the rear tube contains a liquid lens and a third lens. The first lens is a plano-convex lens, and the second and third lenses are each cemented doublets, forming an achromatic system. The objective tube houses a fogging image display panel for playing fogging animations. The system also includes a controller, with the liquid lens, objective tube, and fogging image display panel electrically connected to the controller.

[0011] The fog vision system of this invention consists of a front lens barrel and a rear lens barrel, which together form a variable-focus liquid lens telescope system. The zoom lens can be controlled by circuitry to zoom, and combined with the fog vision image display panel to play video animations, different images can be switched. The zoom response is fast, and there is no need for a complex structure or image switching. The structure is simple and compact, which is more attractive to the trainees and improves the fog vision effect.

[0012] Preferably, the liquid lens is model Arctic 39N0, which has a fast zoom response time of <10ms and a wider zoom range, covering people with nearsightedness and farsightedness from -25D to +20D.

[0013] Preferably, the eyepiece tube is provided with a dustproof lens to prevent dust from entering and to protect the optical path from dust.

[0014] Preferably, the objective lens barrel is further provided with a light-diffusing column in front of the fog image display panel to soften the light and prevent glare, allowing the trainee to focus better.

[0015] Preferably, the first lens has a half-aperture of 12.7 mm and a radius of curvature of 63-66 mm for better focusing.

[0016] Preferably, the second lens has a half-aperture of 10mm, and along the optical path, the radii of curvature of its three lens surfaces are 73mm, 26mm, and 77mm, respectively.

[0017] Preferably, the third lens has a half-aperture of 6.35 mm, and along the optical path, the radii of curvature of its three lens surfaces are 19 mm, 9 mm, and 16 mm, respectively.

[0018] This invention also provides a vision training device, including the aforementioned liquid lens zoom fogging system.

[0019] This invention also provides an optometer, including the aforementioned liquid lens zoom fogging system.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention's fogging system achieves fogging through liquid lens zoom, controlled by a circuit, making operation simple and quick. It eliminates the need for lens replacement and offers a wider zoom range. Simultaneously, a fogging image display panel plays animated videos, allowing for switching between different images, which better attracts the attention of trainees, especially children, thus improving the fogging effect. This fogging system features rapid zoom response, requires no complex structure or image switching, and is simple and compact. It can be used in fully automatic computerized refractometers for rapid eye relaxation fogging effects, and also in fogging adjustment training instruments. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the liquid lens zoom fogging system according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the liquid lens zoom fogging system according to an embodiment of the present invention;

[0024] Figure 3 This is the original optical path diagram of a simulated eye with a hyperopic prescription of 2000 degrees, as described in an embodiment of the liquid lens zoom fogging system of this utility model.

[0025] Figure 4 This is a magnified and stretched optical path diagram of a simulated eye with 2000-degree hyperopia in a liquid lens zoom fogging system according to an embodiment of this utility model.

[0026] Figure 5 This is the original optical path diagram of a simulated eye with myopia of 2500 degrees in the liquid lens zoom fogging system of this utility model embodiment;

[0027] Figure 6 This is a magnified and stretched optical path diagram of a simulated eye with myopia of 2500 degrees, based on an embodiment of the liquid lens zoom fogging system of this utility model. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", 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.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1

[0032] refer to Figure 1-2 This invention provides a liquid lens zoom fogging system, along the optical path ( Figure 1-2 (In the direction of the middle arrow) are arranged in sequence: eyepiece tube 1, front tube 2, rear tube 3, and objective tube 4.

[0033] A dustproof lens 5 is provided in the eyepiece tube 1.

[0034] The front lens barrel 2 contains a first lens 6 and a second lens 7 arranged sequentially. The rear lens barrel 3 contains a liquid lens 8 and a third lens 9 arranged sequentially. The first lens 6 is a plano-convex lens, which serves as a focusing lens. The second lens 7 and the third lens 9 are both cemented doublet lenses, forming an achromatic system. Combined with the variable-focus liquid lens 8, the front lens barrel 2 and the rear lens barrel 3 together form a variable-focus liquid lens telescope system.

[0035] In this embodiment, the first lens 6 has a half-aperture of 12.7 mm and a radius of curvature of 65 mm. The second lens 7 has a half-aperture of 10 mm, along the optical path direction ( Figure 1-2 (in the direction of the middle arrow), the radii of curvature of its three lens surfaces are 73mm, 26mm, and 77mm, respectively. The third lens has a half-aperture of 6.35mm, along the optical path direction ( Figure 1-2 (in the direction of the middle arrow), the radii of curvature of its three lens surfaces are 19mm, 9mm, and 16mm respectively. The liquid lens 8 model is Arctic 39N0.

[0036] Within the objective lens barrel 4, a light-diffusing column 10 and a fogging image display panel 11 are sequentially arranged. The light-diffusing column 10 softens the light and prevents glare. The fogging image display panel 11 is used to play fogging animations.

[0037] The system also includes a controller. The copper sheet wire of the liquid lens 8 in the rear lens barrel 3 is connected to the controller, and the power lines of the objective lens barrel 4 and the fog image display panel 11 are connected to the controller to control the fog vision system.

[0038] It is easy to use and can simulate objects at different distances without changing the fogging auxiliary lens, thus achieving the effect of fogging relaxation or training. Moreover, the zoom time is fast, less than 10ms, and the transition is smooth and seamless; the device has a simple and compact structure, taking up almost no space.

[0039] Figure 3-6 The original optical path and magnified stretched optical path diagrams for 2000 degrees of hyperopia and 2500 degrees of myopia are given. It can be seen that the fog vision system of this utility model has a large optical path zoom range and can effectively cover people with 2500 degrees of myopia and 2000 degrees of hyperopia.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A liquid lens zoom fogging system, characterized in that, Along the optical path are arranged the following components in sequence: eyepiece tube (1), front tube (2), rear tube (3), and objective tube (4). The front lens barrel (2) is provided with a first lens (6) and a second lens (7) in sequence, and the rear lens barrel (3) is provided with a liquid lens (8) and a third lens (9) in sequence. The first lens (6) is a plano-convex lens, and the second lens (7) and the third lens (9) are cemented doublet lenses respectively. The second lens (7) and the third lens (9) form an achromatic system. The objective lens barrel (4) is provided with a fog image display panel (11) for playing fog animation; The system also includes a controller, and the liquid lens (8), objective lens barrel (4) and fog image display panel (11) are electrically connected to the controller.

2. The liquid lens zoom fogging system according to claim 1, characterized in that, The first lens (6) has a half-diameter of 12.7 mm and a radius of curvature of 63-66 mm.

3. The liquid lens zoom fogging system according to claim 1, characterized in that, The second lens (7) has a half-aperture of 10mm, and along the optical path, the radii of curvature of its three lens surfaces are 73mm, 26mm, and 77mm, respectively.

4. The liquid lens zoom fogging system according to claim 1, characterized in that, The third lens (9) has a half-aperture of 6.35 mm and, along the optical path, the radii of curvature of its three lens surfaces are 19 mm, 9 mm, and 16 mm, respectively.

5. The liquid lens zoom fogging system according to claim 1, characterized in that, The liquid lens (8) is model Arctic 39N0.

6. The liquid lens zoom fogging system according to claim 1, characterized in that, The eyepiece tube (1) is provided with a dustproof lens (5).

7. The liquid lens zoom fogging system according to claim 1, characterized in that, In the objective lens tube (4), a light-diffusing column (10) is also provided in front of the fog image display panel (11).

8. A vision training device, characterized in that, Including the liquid lens zoom fogging system as described in any one of claims 1-7.

9. An optometer, characterized in that, Including the liquid lens zoom fogging system as described in any one of claims 1-7.

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