Out-of-focus lens and glasses

Abstract

The utility model belongs to the field of optical devices, and particularly relates to an out-of-focus lens and glasses, and the out-of-focus lens comprises a viewing area which has first focal power matched with the eyes of a viewer, the viewing area comprises a first area corresponding to the view center during long-distance looking, a second area corresponding to the view center during short-distance looking and a corresponding view moving area during adjustment between a long-distance looking state and a short-distance looking state; and the out-of-focus area has second focal power, the out-of-focus area is arranged around the viewing area and is connected with the viewing area, the widths of all parts of the out-of-focus area are the same, a lens is arranged in the out-of-focus area, and the second focal power is greater than the first focal power. Through the arrangement, the eye can receive defocus stimulation when in different states.

Description

Technical Field

[0001] The present application belongs to the field of optical devices, and in particular relates to a defocused lens and glasses. Background Art

[0002] Microlens-based defocused lenses have a certain preventive effect on the development of myopia. However, in most current products, the microlenses are arranged with the center of the lens as the reference point and spread evenly outward. When the human eye is in a telescopic state, the eye axis almost passes through the optical axis of the lens, and the defocus pattern formed by the microlenses is almost evenly distributed around the eye axis on the fundus. However, when the human eye is in a near-sighted state, frame glasses cannot adjust the pupil distance and pupil height in real time. Therefore, the eye axis deviates from the optical axis of the lens, resulting in an unbalanced distribution of the defocus pattern on the fundus, and it no longer presents a uniform arrangement around the eye axis. Utility Model Content

[0003] The present application is proposed based on the above-mentioned requirements of the prior art, and the technical problem to be solved by the present application is to provide a defocus lens and glasses to provide defocus stimulation to the eyes.

[0004] In order to solve the above problems, the technical solutions provided in this application include:

[0005] Provided is a defocus lens, comprising: a viewing area having a first optical focal length adapted to a viewer's eyes, the viewing area comprising: a first area corresponding to the center of the visual field during far-sightedness viewing, a second area corresponding to the center of the visual field during near-sightedness viewing, and a visual field movement area corresponding to adjustment between far-sightedness viewing and near-sightedness viewing; a defocus area having a second optical focal length, the defocus area being arranged outside the viewing area and connected to the viewing area, the defocus area having the same width at all locations, a lens being arranged within the defocus area, and the second optical focal length being greater than the first optical focal length.

[0006] The above configuration allows the viewer to experience defocus stimulation during both long-distance and near-distance viewing. This allows the viewer to experience defocus stimulation even during the transition between long-distance and near-distance viewing. This defocus stimulation suppresses eye axial elongation, helping to reduce myopia. Furthermore, because the width of the defocused area is consistent across the entire field of view, the eye experiences a relatively uniform defocus stimulation regardless of the visual field.

[0007] Preferably, the defocus area includes a plurality of connected sub-defocus areas, the optical powers of adjacent sub-defocus areas are different, and the optical powers of the sub-defocus areas gradually increase in a direction away from the viewing area.

[0008] Since the human eye's ability to observe objects becomes worse the further away from the center of the field of vision, stronger defocus stimulation is needed to achieve better stimulation effects.

[0009] Preferably, the defocus area includes a first part and a second part, the first part includes a plurality of sub-defocus areas arranged in sequence, the sub-defocus areas are arranged in an arc shape around the first area, and the arc-shaped part is formed by the part of the circular ring formed around the first area that is located outside the viewing area; the second part includes a plurality of sub-defocus areas arranged in sequence, the sub-defocus areas are arranged in an arc shape around the second area, and the arc-shaped part is formed by the part of the circular ring formed around the second area that is located outside the viewing area.

[0010] The above arrangement enables the viewer to receive defocus stimulation as evenly as possible when looking far away or close up.

[0011] Preferably, the sub-defocus areas are annular, and each sub-defocus area is arranged around the viewing area as a whole.

[0012] Preferably, a lens is provided in the sub-defocus area, and the area covered by the lens is the entire area within the sub-defocus area.

[0013] Preferably, a plurality of micro lenses are provided in the sub-defocus area, and the micro lenses are evenly arranged in the sub-defocus area.

[0014] Preferably, the first optical power and the second optical power differ by 0.3D to 3D.

[0015] Preferably, the optical powers of adjacent sub-defocus areas differ by 0.1D.

[0016] Also provided are glasses comprising: any one of the above-mentioned defocused lenses, and a glasses frame.

[0017] Preferably, when looking far away, the distance between the left and right eye visual fields is L0, and when looking close up, the distance between the left and right eye visual fields is L1. The horizontal offset between the first area and the second area is: ΔL=(L0-L1) / 2.

[0018] Compared to the prior art, this application provides a viewing area to ensure the viewer's viewing experience. A defocused area is provided outside the viewing area so that when the field of view moves within the viewing area, the viewer receives defocus stimulation from the defocused area, thereby effectively suppressing the elongation of the eye axis. Furthermore, the defocused area includes multiple sub-defocused areas. By arranging the sub-defocused areas and setting the optical power of the lenses within the sub-defocused areas, targeted defocus stimulation is provided to the eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a structural diagram of the correspondence between eyes and lenses in an embodiment of the present application;

[0021] Figure 2 This is a schematic structural diagram of the first area of ​​the lens in an embodiment of the present application;

[0022] Figure 3 This is a schematic structural diagram of the second area of ​​the lens in an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the viewing area and the defocus area of ​​the lens in the embodiment of the present application;

[0024] Figure 5 A schematic diagram of an arrangement of sub-defocus areas within the defocus area of ​​the lens in an embodiment of the present application;

[0025] Figure 6 This is another schematic diagram of the arrangement of sub-defocus areas within the defocus area of ​​the lens in an embodiment of the present application;

[0026] Figure 7 This is a top-down comparison diagram of the two eyes in the distant and near viewing states;

[0027] Figure 8 This is a horizontal comparison diagram of the two eyes in the distant and near viewing states;

[0028] Figure 9 This is a vertical comparison diagram of the two eyes in the distant and near viewing states;

[0029] Figure 10 Schematic diagram of the regional distribution of the lenses of both eyes in glasses.

[0030] Reference numerals:

[0031] 1. Viewing area; 2. First area; 3. Second area; 4. Defocus area; 5. Sub-defocus area; 6. First part; 7. Second part; 8. Third part; 9. Lens; 10. Lens. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connected" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0034] The terms "top," "bottom," "above," "below," and "on" used throughout the description refer to relative positions of components of a device, such as the relative positions of top and bottom substrates within a device. It will be understood that devices are multifunctional regardless of their orientation in space.

[0035] To facilitate understanding of the embodiments of the present application, further explanation will be given below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present application.

[0036] Example 1

[0037] This embodiment provides a defocus lens, such as Figures 1-6 shown.

[0038] The defocus lens includes a viewing area 1 and a defocus area 4.

[0039] When using their eyes, viewers will change their field of vision to receive images from different areas. In common eye usage, such as looking far away or near, when they want to see an image outside their current field of vision, they usually do so by turning their head.

[0040] Specifically, taking the left eye as an example, Figure 2 As shown in the figure, when wearing glasses, when the eyes are in the telescopic state, the eye axis coincides with the optical axis of the lens, that is, the visual field area is located in the center area of ​​the lens. Figure 3 As shown, when the eye is in a near-sighted state, the eye axis deviates from the optical axis of the lens, with the offsets in the X and Y directions being ΔL and ΔH, respectively. Therefore, in order to accommodate the viewer's needs for both distant and near-sighted viewing, this embodiment forms a viewing area 1.

[0041] The viewing area 1 is used to provide a normal imaging area for the viewer. The viewing area 1 has a first optical focal length adapted to the viewer's eyes, thereby ensuring the viewer's viewing experience.

[0042] like Figure 1 and Figure 4 As shown, the viewing area 1 is close to the shape of a runway, and the viewing area 1 includes a first area 2, a second area 3 and a field of view movement area between the first area 2 and the second area 3.

[0043] When a viewer wears glasses to watch, there are two states: looking far away and looking close. Figure 7-Figure 9 As shown, when the viewer is looking at a distance, the optical axes of the eyes are nearly parallel, and the center of their field of view corresponds to first zone 2 of the lens. Typically, first zone 2 is located at the center of the lens. When the viewer is looking at near, the optical axes of the eyes form an angle, and the center of their field of view corresponds to second zone 3, diagonally below the lens. Typically, second zone 3 is located lower and inward of the lens, with the inward side being closer to the nose pad. When the viewer switches from looking at a distance to looking at near, or vice versa, the center of their field of view moves between first zone 2 and second zone 3. The area corresponding to this movement is called the field of view shift zone, connecting first zone 2 and second zone 3.

[0044] Furthermore, if Figure 1 As shown, when the viewing area 1 is divided, the viewing angle θ is not less than 10° and not more than 15°, that is, the center of the visual field corresponds to the viewing angle in the above range.

[0045] Defocused area 4 is a uniform annular shape, i.e., its width is uniform throughout. It surrounds viewing area 1, with its inner side abutting the outer side of viewing area 1. Defocused area 4 has a second optical power greater than the first optical power, so as to create a defocused stimulus outside the center of the viewer's field of view. Specifically, under the influence of viewing area 1, the image of objects in the center of the field of view falls on the viewer's retina, allowing the viewer to clearly see the central object. Under the influence of defocused area 4, the image of objects outside the center of the field of view falls in front of the retina, thereby pulling the eye's axis forward and effectively inhibiting axial elongation.

[0046] Furthermore, the first optical power and the second optical power differ by 0.3D to 3D.

[0047] Lenses 10 are arranged in the defocused area 4 to provide optical power. The shape of the lens 10 can be the same as that of the defocused area 4, that is, the lens 10 completely covers the defocused area 4. The lens 10 can also be a microlens, and multiple microlenses are arranged in the defocused area 4.

[0048] Furthermore, the defocused area 4 includes a plurality of connected sub-defocused areas 5, each with a different optical power, which gradually increases as it moves away from the viewing area 1. Furthermore, the optical power of adjacent sub-defocused areas 5 differs by 0.1D. Specifically, the shape of the lens 10 can be adapted to the sub-defocused areas 5, that is, the lens 10 completely covers the sub-defocused areas 5; when the lens 10 is a microlens, the microlenses are evenly arranged in the sub-defocused areas 5, and the microlenses in the same sub-defocused area 5 have the same optical power.

[0049] The arrangement of the sub-defocused areas 5 includes but is not limited to the following methods:

[0050] In a feasible implementation of this embodiment, as Figure 5 As shown, the defocus area 4 includes a first part 6, a second part 7 and a third part 8. The first part 6 includes a plurality of sub-defocus areas 5 arranged in sequence, the sub-defocus areas 5 are arranged in an arc shape around the first area 2, and the arc-shaped part is formed by the part of the ring formed around the first area 2 that is located outside the viewing area 1. The second part 7 includes a plurality of sub-defocus areas 5 arranged in sequence, the sub-defocus areas 5 are arranged in an arc shape around the second area 3, and the arc-shaped part is formed by the part of the ring formed around the second area 3 that is located outside the viewing area 1. The third part 8 is the area in the defocus area 4 excluding the first area 2 and the second area 3. The sub-defocus areas 5 of the first part 6 at a certain distance from the center of the first area 2 and the sub-defocus areas 5 of the first part 6 at a certain distance from the center of the second area 3 have the same refractive power.

[0051] In a feasible implementation of this embodiment, as Figure 6 As shown, the sub-defocusing area 5 is annular, and the width of each sub-defocusing area 5 is the same so that it is evenly distributed on the lens, and multiple defocusing areas 4 are arranged in a nested manner.

[0052] Example 2

[0053] This embodiment provides a pair of glasses, such as Figure 10 shown.

[0054] The glasses include the lenses as claimed in claim 1 and a frame for supporting the lenses.

[0055] like Figure 7-Figure 9 As shown in the figure, when the eyes are in telephoto mode, the optical axes of the eyes (i.e., the eye axes) are nearly parallel and coincide with the optical axis of the glasses. At this point, the distance between the optical axes of the eyes is L0. When the eyes are in near-sighted mode, the optical axes of the eyes form an angle, deviating from the optical axis of the glasses. The horizontal deviation of the center of the visual field in both near-sighted and telephoto modes is: ΔL = (L0 - L1) / 2.

[0056] The first area 2 is the center of the lens, and the second area 3 is the lower and inner position of the lens, where the inner side refers to the side close to the nose pad.

[0057] The glasses can meet daily needs and can also effectively generate defocus stimulation, thereby inhibiting the elongation of the eye axis.

[0058] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A defocus lens, characterized in that: include: a viewing area having a first optical power adapted to the viewer's eyes, the viewing area comprising: a first area corresponding to the center of the visual field during far-sightedness viewing, a second area corresponding to the center of the visual field during near-sightedness viewing, and a visual field movement area corresponding to adjustment between the far-sightedness state and the near-sightedness state; A defocused area has a second optical focal length. The defocused area is arranged around the viewing area and connected to the viewing area. The width of the defocused area is the same at all places. A lens is arranged in the defocused area. The second optical focal length is greater than the first optical focal length.

2. The defocus lens according to claim 1, wherein: The defocus area includes a plurality of connected sub-defocus areas, the optical powers of adjacent sub-defocus areas are different, and the optical powers of the sub-defocus areas gradually increase in a direction away from the viewing area.

3. The defocus lens according to claim 1, wherein: The defocused area includes a first portion and a second portion, the first portion includes a plurality of sub-defocused areas sequentially arranged around the first area, the sub-defocused areas are arranged in an arc shape around the first area, and the arc-shaped portion is formed by a portion of the ring formed around the first area that is outside the viewing area; The second part includes a plurality of sub-defocus areas arranged in sequence, the sub-defocus areas are arranged in an arc shape around the second area, and the arc-shaped part is formed by a part of the ring formed around the second area and located outside the viewing area.

4. The defocus lens according to claim 2, wherein: The sub-defocus areas are ring-shaped, and each sub-defocus area is arranged around the viewing area as a whole.

5. The defocus lens according to claim 2, wherein: A lens is provided in the sub-defocus area, and the area covered by the lens is the entire area within the sub-defocus area.

6. The defocus lens according to claim 2, wherein: A plurality of micro lenses are arranged in the sub-defocus area, and the micro lenses are evenly arranged in the sub-defocus area.

7. The defocus lens according to claim 1, wherein: The first optical power and the second optical power differ by 0.3D to 3D.

8. The defocus lens according to claim 2, wherein: The optical powers of adjacent sub-defocus areas differ by 0.1D.

9. A pair of glasses, characterized in that: include: A defocus lens as claimed in any one of claims 1 to 8, and frames.

10. The glasses according to claim 9, characterized in that When looking far away, the distance between the left and right eye visual fields is L0, and when looking close up, the distance between the left and right eye visual fields is L1. The horizontal offset between the first area and the second area is: ΔL=(L0-L1) / 2.

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