KR102761561B1 - Variable lens, lens module, and glasses including the same - Google Patents

Abstract

A variable lens, a lens module, and glasses including the same are provided. According to an aspect of the present invention, a variable lens comprises: a first plate; a core member disposed on the first plate and including a cavity; a second plate disposed on the core member; a first liquid and a second liquid disposed in the cavity; a first electrode electrically connected to the first liquid; a plurality of second electrodes disposed between the first plate and the second liquid; and an insulating layer disposed between the plurality of second electrodes and the second liquid, wherein an interface formed between the first liquid and the second liquid has a positive diopter, and the first plate has a negative diopter.

Description

VARIABLE LENS, LENS MODULE, AND GLASSES INCLUDING THE SAME

The present invention relates to a variable lens, a lens module and glasses including the same.

Human eyes develop myopia, hyperopia, or presbyopia due to various factors. For example, as muscles age or as the use of vision accumulates, vision deteriorates. For this reason, glasses are used to help with deteriorating vision.

Generally, when it is difficult to see distant objects clearly, nearsighted glasses with concave lenses are used, and when it is difficult to see nearby objects clearly, farsighted glasses with convex lenses are used.

Glasses for nearsightedness or farsightedness are single-focus lenses, which are single-focus concave or single-focus convex lenses with a power for viewing distant or near distances. These single-focus lenses have a fixed focus on one lens, so they can only be used for viewing or working with objects that are far or near.

On the other hand, if a user who uses glasses for nearsightedness develops presbyopia due to accumulated use of the eyesight, he or she must use separate glasses for farsightedness to see up close. In this case, there is the problem of having to endure the inconvenience of using glasses for nearsightedness and glasses for farsightedness.

To solve these problems, the need for glasses with multifocal lenses is emerging.

The problem to be solved by the present invention is to provide a variable lens capable of adjusting the focus of the lens, a lens module, and glasses including the same.

According to an aspect of the present invention for achieving the above object, a variable lens comprises: a first plate; a core member disposed on the first plate and including a cavity; a second plate disposed on the core member; first liquid and second liquids disposed in the cavity; a first electrode electrically connected to the first liquid; a plurality of second electrodes disposed between the first plate and the second liquid; and an insulating layer disposed between the plurality of second electrodes and the second liquid, wherein an interface formed between the first liquid and the second liquid has a positive diopter, and the first plate has a negative diopter.

Additionally, the upper side of the first plate on which the focused eye is placed may include a curved surface, and when no voltage is applied to the first electrode and the plurality of second electrodes, the interface may have a convex shape toward the water side.

Additionally, when no driving voltage is applied to the first electrode and the plurality of second electrodes, the radius of curvature of the curved surface of the first plate may be equal to the radius of curvature of the interface.

Additionally, the second plate may have a meniscus shape convex toward the water side.

Additionally, the second plate may have zero or positive diopters.

Additionally, each of the plurality of second electrodes may have a circular shape, and the insulating layer may be disposed on the plurality of second electrodes.

Additionally, the plurality of second electrodes may be concentric.

Additionally, the interface can be adjusted so that the sum of the diopter of the interface and the diopter of the first plate is 0 or more and 4 or less.

Additionally, in the initial state where no driving voltage is applied, the sum of the diopter of the interface and the diopter of the first plate is 0, and when the driving voltage is applied, the sum of the diopter of the interface and the diopter of the first plate can be greater than 0.

In addition, the variable lens may be an astigmatic or myopic lens in an initial state when no driving voltage is applied, and may be a presbyopic lens when the driving voltage is applied.

Additionally, the plurality of second electrodes may be spaced apart from each other.

Additionally, the plurality of second electrodes may be formed in an oval shape.

Additionally, the first liquid may be a conductive liquid and the second liquid may be a non-conductive liquid.

Additionally, the second plate and the core member can be formed integrally.

According to one aspect of the present invention for achieving the above object, a lens module includes a variable lens having a variable focus; and a driving unit for supplying a driving voltage to the variable lens, wherein the variable lens is used for astigmatism or myopia in an initial state in which the driving voltage is not applied, and is used for presbyopia when the driving voltage is applied.

Additionally, the variable lens may include a first lens part, a second lens part, and a third lens part disposed between the first lens part and the second lens part and having a variable focus.

According to an aspect of the present invention for achieving the above object, a variable lens comprises: a first lens part; a second lens part; and a third lens part disposed between the first lens part and the second lens part and having a variable focus, wherein a diopter of the second lens part has a negative diopter, a diopter of the third lens part has a positive diopter, and a function of a presbyopic lens is performed by utilizing a sum of diopters of the second lens part and the third lens part.

Additionally, the sum of the diopters of the third lens part and the second lens part is 0 or more and 4 or less, and the diopter of the first lens part can have 0 or a positive diopter.

According to an aspect of the present invention for achieving the above object, a pair of glasses comprises: a glasses frame; a support member extending from the glasses frame; a variable lens disposed on the glasses frame and having a variable focus; and a control member disposed on the glasses frame or the support member and controlling a driving voltage applied to the variable lens, wherein the variable lens is used for astigmatism or myopia in an initial state in which the driving voltage is not applied, and is used for presbyopia when the driving voltage is applied.

Additionally, the control unit controls the variable lens to a normal mode or a presbyopic mode, and the presbyopic mode can be controlled to a plurality of levels.

Additionally, the glasses include an input device, and the level of the presbyopia mode can be changed depending on the number or length of signals input to the input device.

Through this embodiment, a variable lens capable of adjusting the focus of the lens, a lens module, and glasses including the same can be provided.

FIG. 1 is a perspective view of glasses according to one embodiment of the present invention.
FIG. 2 is a perspective view of a variable lens unit according to one embodiment of the present invention.
FIG. 3 is a cross-sectional view of a variable lens unit according to one embodiment of the present invention.
FIG. 4 is a perspective view of glasses according to one embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

However, the technical idea of the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively combined or substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention can be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, can be interpreted in consideration of the contextual meaning of the relevant technology.

Additionally, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as "A and (or at least one) of B, C", it may include one or more of all combinations that can be combined with A, B, C.

In addition, when describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

In addition, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only the case where the two components are in direct contact with each other, but also the case where one or more other components are formed or arranged between the two components. In addition, when expressed as "above" or "below", the meaning of the downward direction as well as the upward direction based on one component may be included.

Hereinafter, the present invention will be described in more detail with reference to the attached drawings.

FIG. 1 is a perspective view of glasses according to one embodiment of the present invention. FIG. 2 is a perspective view of a variable lens unit according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of a variable lens unit according to one embodiment of the present invention. FIG. 4 is a perspective view of glasses according to one embodiment of the present invention.

Referring to FIGS. 1 to 4, glasses (10) according to one embodiment of the present invention may include a lens unit (100), a variable lens unit (200), a glasses frame (300), and a support unit (400), but may be implemented excluding some of the configurations thereof, and additional configurations are not excluded. At this time, the variable lens unit (200) may be referred to as a 'variable lens', a 'liquid lens unit', or a 'liquid lens'. In addition, in one embodiment of the present invention, the 'variable lens' may mean a 'variable focus lens'.

Referring to FIGS. 1 to 4, a variable lens unit (200) according to one embodiment of the present invention may include a first plate (220), a second plate (210), a core member (230), a first electrode (240), a second electrode (250), an insulating layer (260), a first liquid (270), a second liquid (280), and a connecting portion (290), but may be implemented excluding some of the configurations, and additional configurations are not excluded.

The lens unit (100) may be placed on the frame (300) of the glasses (10). In one embodiment of the present invention, the lens unit (100) is described as being placed on the frame (300) of the glasses (10), but the lens unit (100) may be directly connected to the support unit (400) without the frame (300). The lens unit (100) may be formed of transparent glass or plastic. A variable lens unit (200) may be placed in a lower region of the lens unit (100). Here, the lower region may mean a region below when the user stands and wears the glasses (10). The lens unit (100) may include a variable lens unit (200). For example, the entire region of the lens unit (100) may be a variable lens unit (200).

The variable lens unit (200) may be placed in the lens unit (100). The variable lens unit (200) may be placed in the entire area of the lens unit (100), which means that the variable lens unit (200) may be the lens unit (100). The variable lens unit (200) may be placed in a portion of the lens unit (100). The variable lens unit (200) may be placed in a lower area of the lens unit (100). The variable lens unit (200) may be placed in a central area of the lens unit (100). The variable lens unit (200) may be formed in a circular shape. The variable lens unit (200) may be formed in an oval shape. The difference in refractive index between the variable lens unit (200) and the lens unit (100) other than the variable lens unit (200) may be 0.05 or less. Here, the lower area may mean the area below when the user stands and wears the glasses (10).

The variable lens unit (200) may include a second plate (210). The second plate (210) may be placed on the core member (230). The second plate (210) may be placed on the other side of the first plate (220) with respect to the core member (230). The second plate (210) may be placed above or in front of the first plate (220). The second plate (210) may be connected to the core member (230). The second plate (210) may be formed integrally with the core member (230). When the second plate (210) and the core member (230) are formed integrally, the core member (230) may mean a side wall region of a cavity in which the first liquid (270) and the second liquid (280) are placed. At this time, the area placed below the first liquid (2780) and the second liquid (280) may be the first plate (220), and the area placed above may be the second plate (210). The second plate (210) may be formed of glass or plastic material and may be transparent. The first electrode (240) may be placed on one surface of the second plate (210). The first electrode (240) may be placed on the lower surface or the rear surface of the second plate (210).

The second plate (210) may be formed convexly in the first direction. Here, the first direction means the front when the user wears the glasses, and the other direction or the upper direction based on FIG. 3. One side and/or the other side of the second plate (210) may be formed convexly in the first direction. For example, the second plate (210) may have a meniscus shape convex toward the water side. Through this, the radius of curvature when the wearer's pupil moves can be reflected.

The third angle (θ3) formed by one side and/or the other side of the second plate (210) with an imaginary plane perpendicular to the optical axis may be between 8 degrees and 15 degrees. Making the third angle (θ3) smaller than 8 degrees increases manufacturing costs, and making the third angle (θ3) larger than 15 degrees increases the diopter and thus increases the thickness. Therefore, it is preferable that the third angle (θ3) be between 8 degrees and 15 degrees. The second plate (210) may have a diopter of 0 or positive.

The variable lens unit (200) may include a first plate (220). The first plate (220) may be arranged on one side of the core member (230). The first plate (220) may be arranged below or behind the core member (230). The first plate (220) may be connected or coupled with the core member (230). The first plate (220) may be formed integrally with the core member (230). The first plate (220) may be formed of glass or plastic material and may be transparent.

One side of the first plate (220) may be formed concavely in a first direction. Here, the first direction means the front when the user wears the glasses, and the other direction or the upper direction based on FIG. 3. For example, the upper side of the first plate (220) on which the user's eyes are focused may be placed may be curved, and in an initial state where no voltage is applied to the first electrode (240) and the second electrode (250), the interface may have a convex shape toward the water side. In addition, in an initial state where no voltage is applied to the first electrode (240) and the second electrode (250), the radius of curvature of the curved surface of the first plate (220) may be the same as the radius of curvature of the interface between the first liquid (270) and the second liquid (280). The lower surface or the rear surface of the first plate (220) may be formed concavely in the first direction. This allows the radius of curvature to be reflected as the wearer's pupil moves.

The second angle (θ2) formed between one side of the first plate (220) and a virtual plane parallel to one side of the second liquid (280) may be equal to the first angle (θ1) formed between the interface between the first liquid (270) and the second liquid (280) and one side of the second liquid (280) in an initial state in which no voltage is applied to the first and second electrodes (240, 250). The second angle (θ2) formed between one side of the first plate (220) and a virtual plane parallel to one side of the second liquid (280) may be between 8 degrees and 15 degrees. Making the second angle (θ2) smaller than 8 degrees increases the manufacturing cost, and making the second angle (θ2) larger than 15 degrees increases the diopter and thus increases the thickness, and therefore, it is preferable that the second angle (θ2) be between 8 degrees and 15 degrees.

The variable lens unit (200) may include a core member (230). The core member (230) may be placed on the first plate (220). The core member (230) may be connected to the second plate (210) and the first plate (220). The core member (230) includes a cavity, and the cavity of the core member (230) may be formed in a circular shape. The core member (230) may be formed of a glass or plastic material and may be transparent. An angle formed by the core member (230) with the second plate (210) may be a right angle. An angle formed by the core member (230) with the first plate (220) may be a right angle.

The core member (230) may have a cavity. The cavity may mean a space between the second plate (210), the first plate (220), and the core member (230). A second electrode (250), an insulating layer (280), a first liquid (270), and a second liquid (280) may be placed in the cavity. The other surface of the cavity may have a shape that is convex upward. The upper surface or the front surface of the cavity may have a shape that is convex upward. Unlike FIG. 3, the cross section of the cavity may have a rectangular shape.

The variable lens unit (200) may include a first electrode (240). The first electrode (240) may be positioned to be in contact with a first liquid (270). The first electrode (240) may be electrically connected to the first liquid (270). The first electrode (240) may be positioned on the second plate (210) or the core member (230). The first electrode (240) may be positioned between the second plate (210) and the first liquid (270). The first electrode (240) may be positioned on one surface of the second plate (210). The first electrode (240) may be positioned on the lower surface or the rear surface of the second plate (210). The first electrode (240) may be formed to be curved or flat depending on the shape of one surface of the second plate (210). For example, as shown in Fig. 3, the first electrode (240) may be formed convexly in the first direction. Alternatively, when the cross-section of the cavity is rectangular, the first electrode (240) may be formed flat.

The first electrode (240) may be formed of a conductive material. For example, the first electrode (240) may be made of a metal. The first electrode (240) may be formed of a thin film. The first electrode (240) may be formed of a transparent material. The first electrode (240) may be formed of ITO (Indium Tin Oxide). The transmittance of the first electrode (240) may be 0.97 or more. The control signal applied to the first electrode (240) may be a pulse width modulation (PWM) signal. The driving voltage of the first electrode (240) may be 70 V or less.

The variable lens unit (200) may include a second electrode (250). The second electrode (250) may be disposed on the first plate (220). The second electrode (250) may be disposed on the other surface of the first plate (220). The second electrode (250) may be disposed on the upper surface or the front surface of the first plate (220). The second electrode (250) may be disposed between the first plate (220) and the first liquid (270). The second electrode (250) may be disposed between the first plate (220) and the second liquid (280).

The second electrode (250) may be formed of a conductive material. For example, the second electrode (250) may be made of a metal. The second electrode (250) may be formed of a thin film. The second electrode (250) may be formed of ITO (Indium Tin Oxide). The transmittance of the second electrode (250) may be 0.97 or more. The control signal applied to the second electrode (250) may be a pulse width modulation (PWM) signal. The driving voltage of the second electrode (250) may be 70 V or less.

The second electrode (250) may include a plurality of second electrodes (252, 254, 256, 258). The plurality of second electrodes (252, 254, 256, 258) may be spaced apart from each other. Each of the plurality of second electrodes (252, 254, 256, 258) may be formed in a ring shape. The plurality of second electrodes (252, 254, 256, 258) may have a plurality of ring shapes having concentric circles, and each of the plurality of second electrodes (252, 254, 256, 258) may have a circular or oval shape. Each of the plurality of second electrodes (252, 254, 256, 258) may be formed in an 'o' shape or a donut shape. The plurality of second electrodes (252, 254, 256, 258) may be concentric. The cross-section of each of the plurality of second electrodes (252, 254, 256, 258) may be formed in an elliptical shape. The cross-section of each of the plurality of second electrodes (252, 254, 256, 258) may be formed in a circular shape. The thickness of each of the plurality of second electrodes (252, 254, 256, 258) may be greater than the distance between adjacent second electrodes (252, 254, 256, 258). Each of the plurality of second electrodes (252, 254, 256, 258) may be independently supplied with different currents or voltages and driven independently.

In one embodiment of the present invention, the number of the plurality of second electrodes (252, 254, 256, 258) is explained as an example of four, but is not limited thereto and the number of the plurality of second electrodes (252, 254, 256, 258) may be changed in various ways.

According to one embodiment of the present invention, a plurality of second electrodes (252, 254, 256, 258) are formed in a ring shape, a donut shape, or an 'o' shape, so that the moving distance of the first liquid (270) and the second liquid (280) is shortened, thereby lowering the driving voltage and increasing the driving speed.

The variable lens unit (200) may include an insulating layer (260). The insulating layer (260) may be disposed on the other surface of the first plate (220). The insulating layer (260) may be disposed on the upper surface or the front surface of the second plate (200). The insulating layer (260) may surround the second electrode (250). The insulating layer (260) may be disposed on a plurality of second electrodes (252, 254, 256, 258). The insulating layer (260) may be disposed between the second plate (200) and the second liquid (280). The insulating layer (260) may be disposed between the second plate (200) and the first liquid (270). The insulating layer (260) may be disposed between the second electrode (250) and the second liquid (280). The insulating layer (260) can prevent the second electrode (250) and the second liquid (280) from being in contact. The insulating layer (260) can prevent the second electrode (250) and the first liquid (270) from being in contact. The insulating layer (260) can be formed as a thin film. The insulating layer (260) can be formed by being laminated on at least a portion of the surface of the second electrode (250). The insulating layer (260) can be formed of a transparent material. The transmittance of the insulating layer (260) can be 0.97 or higher. The insulating layer (260) can be hydrophobic. Accordingly, even when the user wears glasses, the second liquid (280), which is oil, does not gather downward and can be arranged as shown in FIG. 3.

The variable lens unit (200) may include first and second liquids (270, 280). The first liquid (270) may be a conductive liquid, and the second liquid (280) may be a non-conductive liquid. For example, the first liquid (270) may include an aqueous solution and/or water, and the second liquid (280) may include oil. The first liquid (270) and the second liquid (280) may not be mixed with each other. The first liquid (270) and the second liquid (280) may be liquids that are not harmful to the human body. The first liquid (270) and the second liquid (280) may be transparent liquids.

The interface between the first liquid (270) and the second liquid (280) may be a refractive surface. In an initial state where no voltage or current is applied to the first electrode (240) and the second electrode (250), a first angle (θ1) formed by the interface between the first liquid (270) and the second liquid (280) and an imaginary plane perpendicular to the optical axis may be equal to a second angle (θ2) formed by one surface of the first plate (220), one surface of the second liquid (280), and an imaginary plane perpendicular to the optical axis. In this case, the combined diopter of the interface between the first liquid (270) and the second liquid (280) and the first plate (220) may be 0 diopter. For example, the diopter of the interface has a positive diopter and the diopter of the first plate (220) has a negative diopter and they can have the same size so that the composite diopter value can have 0 diopter. In the initial state, the first angle (θ1) can be between 8 and 15 degrees. There is a disadvantage in that the manufacturing cost is high when the first angle (θ1) is made smaller than 8 degrees, and there is a disadvantage in that the thickness increases when voltage or current is applied to the first electrode (240) and the second electrode (250) when the first angle (θ1) is made larger than 15 degrees. Therefore, it is preferable that the third angle (θ3) is between 8 and 15 degrees.

When voltage or current is applied to the first electrode (240) and the second electrode (250), the interface between the first liquid (270) and the second liquid (280) can change in various ways. For example, when current or voltage is applied to the first electrode (240) and the second electrode (250), the interface between the first liquid (270) and the second liquid (280) can become convex in a first direction to vary the diopter of the variable lens unit (200). Here, the first direction can mean the water side, the front side, the upper side, or the other side. When current or voltage is applied to the first electrode (240) and the second electrode (250) so that the first angle (θ1) becomes larger than the second angle (θ2), the interface between the first liquid (270) and the second liquid (280) can form a positive diopter. At this time, the composite diopter of the variable lens may be less than or equal to +10 diopters. When current or voltage is applied to the first electrode (240) and the second electrode (250) so that the first angle (θ1) becomes smaller than the second angle (θ2), the composite diopter of the variable lens may form a negative diopter. At this time, the negative diopter may be greater than or equal to -5 diopters.

The sum of the diopter of the interface between the first liquid (270) and the second liquid (280) and the diopter of the first plate (220) may be 0 or more and 4 or less. In an initial state where no voltage or current is applied to the first electrode (240) and the second electrode (250), the sum of the diopter of the interface between the first liquid (270) and the second liquid (280) and the diopter of the first plate (220) may be 0. In this case, the variable lens unit (200) may implement an astigmatic or myopic lens. When voltage or current is applied to the first electrode (240) and the second electrode (250), the sum of the diopter of the interface between the first liquid (270) and the second liquid (280) and the diopter of the first plate (220) may be greater than 0 and less than 4. In this case, the variable lens unit (200) can implement a lens for presbyopia.

In an embodiment of the present invention, the variable lens unit (200) may be referred to as a 'lens module'. In addition, the first plate (220) may be referred to as a 'first lens part', a 'first lens region' or a 'first lens unit', the second plate (210) may be referred to as a 'second lens part', a 'second lens region' or a 'second lens unit', and the core member (230) may be referred to as a 'third lens part', a 'third lens region' or a 'third lens unit'.

The glasses (10) may include a glasses frame (300). The glasses frame (300) may accommodate a lens unit (100). An electrode connection unit for transmitting voltage or current to a variable lens unit (200) may be arranged on the glasses frame (300). The electrode connection unit may be electrically connected to a connection unit (290) of the variable lens unit (200). In one embodiment of the present invention, the glasses frame (200) is described as having a square shape as an example, but is not limited thereto, and may be transformed into an oval shape or a circular shape.

The glasses (10) may include a support (400). The support (400) may be connected to the glasses frame (200). A signal providing unit (not shown) that receives a signal from a user may be arranged in the support (400). A control unit (not shown) that generates a signal for controlling a variable lens unit (200) according to a signal input from a user may be arranged in the support (400). A driving unit (not shown) that provides voltage or current according to a signal from the control unit may be arranged in the support (400).

The glasses (10) may include a driving unit (not shown). The driving unit may be arranged in the glasses frame (300) or the support unit (400). The driving unit may be electrically connected to the variable lens unit (200). The driving unit may supply a driving voltage to the variable lens unit (200). The driving unit may be electrically connected to the control unit. The driving unit may supply a driving voltage or current applied to the variable lens unit (200) according to a signal from the control unit. In an initial state where the driving unit does not apply a driving voltage to the variable lens unit (200), the glasses (10) may be used for astigmatism or myopia. When the driving unit applies a driving voltage to the variable lens unit (200), the glasses (10) may be used for presbyopia. When the glasses (10) are used for presbyopia, the variable lens unit (200) may be implemented in a plurality of levels of presbyopia modes according to the applied driving voltage. For example, when a first driving voltage is applied, the variable lens unit (200) can operate in a first level presbyopia mode, when a second driving voltage is applied, the variable lens unit (200) can operate in a second level presbyopia mode, and when a third driving voltage is applied, the variable lens unit (200) can operate in a third level presbyopia mode. In this case, the level of the presbyopia mode can be changed depending on the number of times or length of a signal input to an input device such as a touch sensor included in the glasses (10). In one embodiment of the present invention, the driving unit is described as a separate component from the control unit, but the driving unit may be included in the control unit.

Glasses (10) according to one embodiment of the present invention can implement a first lens mode, which is a lens for astigmatism or myopia, or a second lens mode, which is a lens for presbyopia, through one variable lens unit (200), thereby increasing user convenience.

Although the embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

10: Glasses 100: Lens
200: Variable lens section 210: Second plate
220: First plate 230: Core member
240: 1st electrode 250: 2nd electrode
260: Insulating layer 270: First liquid
280: Second liquid 290: Connection
300: Glasses Frame 400: Support

Claims (21)

Plate 1;
A core member disposed on the first plate and including a cavity;
A second plate disposed on the core member;
First liquid and second liquid placed in the above cavity;
A first electrode electrically connected to the first liquid;
a plurality of second electrodes arranged between the first plate and the second liquid; and
Including an insulating layer disposed between the plurality of second electrodes and the second liquid,
The interface formed between the first liquid and the second liquid has a positive diopter,
The above first plate has a negative diopter,
The upper side of the first plate on which the eye to be focused is placed includes a curved surface,
In a state where no voltage is applied to the first electrode and the plurality of second electrodes, the interface has a convex shape toward the water side.
A variable lens in which the radius of curvature of the surface of the first plate is the same as the radius of curvature of the interface when no driving voltage is applied to the first electrode and the plurality of second electrodes. delete delete In paragraph 1,
The above second plate is a variable lens having a meniscus shape convex toward the water side.
In paragraph 1 or paragraph 4,
The second plate is a variable lens having zero or positive diopter.
In paragraph 1,
Each of the above plurality of second electrodes has a circular shape,
The above insulating layer is a variable lens disposed on the plurality of second electrodes.
In paragraph 6,
The above plurality of second electrodes are concentric variable lenses.
In paragraph 1,
A variable lens in which the interface is adjusted so that the sum of the diopter of the interface and the diopter of the first plate is 0 or more and 4 or less.
In Article 8,
In the initial state where no driving voltage is applied, the sum of the diopter of the interface and the diopter of the first plate is 0,
A variable lens in which the sum of the diopter of the interface and the diopter of the first plate is greater than 0 when the above driving voltage is applied.
In paragraph 1,
The above variable lens is,
In the initial state when no driving voltage is applied, it is an astigmatic or myopic lens,
A variable lens for presbyopia when the above driving voltage is applied.
In paragraph 1,
The above plurality of second electrodes are variable lenses spaced apart from each other.
In paragraph 1,
A variable lens in which the plurality of second electrodes are formed in an elliptical shape.
In paragraph 1,
A variable lens wherein the first liquid is a conductive liquid and the second liquid is a non-conductive liquid.
In paragraph 1,
A variable lens in which the second plate and the core member are formed integrally.
A variable lens of the first aspect having a variable focus; and
It includes a driving unit that supplies a driving voltage to the variable lens,
The above variable lens is a lens module that is used for astigmatism or myopia in the initial state when the driving voltage is not applied, and for presbyopia when the driving voltage is applied. delete First lens part;
Second lens part;
A third lens part is disposed between the first lens part and the second lens part and has a variable focus,
The diopter of the second lens part has a negative diopter,
The diopter of the third lens part above has a positive diopter,
The function of a presbyopic lens is performed by using the diopter sum of the second lens part and the third lens part,
The sum of the diopters of the third lens part and the second lens part is 0 or more and 4 or less,
A variable lens having a diopter of the first lens part of the above-mentioned first lens part of 0 or a positive diopter. delete glasses frame;
A support extending from the above spectacle frame;
A variable lens of claim 17, which is arranged in the above spectacle frame and has a variable focus; and
A control unit is disposed on the above-mentioned glasses frame or the above-mentioned support, and controls the driving voltage applied to the variable lens,
The above variable lens is a pair of glasses that are used for astigmatism or myopia in the initial state when the driving voltage is not applied, and for presbyopia when the driving voltage is applied. In Article 19,
The above control unit controls the variable lens to a normal mode or a presbyopic mode,
The above presbyopia mode is controlled at multiple levels in the glasses.
In Article 20,
The glasses include an input device, and the level of the presbyopia mode is changed according to the number or length of signals input to the input device.

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