KR20130024248A

KR20130024248A - Autofocus glasses

Info

Publication number: KR20130024248A
Application number: KR1020110087570A
Authority: KR
Inventors: 이택진; 이석; 우덕하; 김선호; 김재헌; 이혁재
Original assignee: 한국과학기술연구원
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2013-03-08

Abstract

PURPOSE: Automatic focus eyeglasses are provided to improve convenience and to offer a wide viewing angle. CONSTITUTION: Automatic focus eyeglasses include one pair of lenses(200), a focus measurement unit(300), and a focus control unit(400). One pair of lenses is formed in the left side and the right side of an eyeglasses frame. The focus measurement unit measures a focal length by being formed in a specific location of the eyeglasses frame. The focus control unit is connected with a pair of the lenses and the focus measurement unit and controls a focus of the lens according to the measured focal length in the focal length measurement unit. [Reference numerals] (200) Lens; (300) Focus measurement unit; (400) Focus control unit

Description

Autofocus Glasses {Autofocus glasses}

The present invention relates to an auto focusing glasses, and more particularly, to a user by providing a focus measuring unit measuring a focus distance at a predetermined position of an eyeglass frame, and adjusting a focus of a lens using the focus distance information obtained through the focus measuring unit. The present invention relates to an auto focusing glasses that can provide a wide field of view while providing convenience to use.

Presbyopia is a natural phenomenon that occurs as a person ages and is about 40 years old, and the thickness control ability of the lens decreases.

Symptoms of presbyopia include trying to keep the book farther away than usual when reading, making it hard to see documents at sunset, cloudy days, or in the dark, and slowing down reading speed. You will need glasses.

These symptoms can be corrected in many ways, and can usually be corrected by alternating eyeglasses such as magnifying glasses, bifocals, and focal lenses, depending on the purpose, or by surgical procedures such as LASIK or LASEK. have.

Among them, the focal focal lens is mainly used as a method for correcting presbyopia, and the focal focal lens forms a different thickness of the focal lens to form a progressive frequency array as shown in FIG. Therefore, it is configured to be seen through a single lens from far to near.

Through this configuration, the focal lens can see all the distances with a single glasses, providing convenience without having to wear different types of glasses alternately as needed. There is an advantage.

However, since the focal lens is not sure of the boundary where the frequency is changed, when the object is seen through the boundary, the object becomes cloudy, and the eye must be centered to see the object accurately. In other words, if the focus is not well adjusted, dizziness and nausea occur, and a certain period of adaptation is required, and when the object is viewed through the boundary part, there is a problem of bluish appearance.

In addition, there are also problems in that the field of view is narrowed because a myriad of focal points are formed in multiple numbers in one lens.

In order to solve the above problems of the prior art, the present invention includes a focus measuring unit for measuring a focal length at a predetermined position of the spectacle frame, and by adjusting the focus of the lens by using the focal length information obtained through the specific part of the spectacles The purpose of the present invention is to provide an auto focusing glasses that can provide a wider field of view while providing convenience to a user by removing inconveniences such as seeing an object or blurring an object at a boundary where a focus is changed.

Auto focus glasses according to the present invention, the spectacle frame; A pair of lenses respectively provided on the left and right sides of the spectacle frame; A focus measuring unit provided at a predetermined position of the spectacle frame and measuring a focal length; And a focus adjusting unit connected to the pair of lenses and a focus measuring unit to adjust the focus of the lens according to the focal length measured by the focus measuring unit.

Since the autofocus glasses according to the present invention automatically adjust the focus of the lens according to the focal length information measured through the focus measuring unit provided at a predetermined position of the spectacle frame, the autofocus glasses according to the present invention may be moved at a short distance without moving the line of sight to a specific position according to the focal length. Viewing from a long distance from the eye can be seen accurately without fatigue, and has the effect of ensuring a wide field of view.

1 is a view showing a gaze distance in a glasses to which a general multifocal lens is applied.
2 shows an auto focus eyeglass according to the invention.
Figure 3 is a block diagram showing the configuration of the auto focus glasses according to the present invention.
4 is a view showing a cross-sectional structure of the glasses for explaining the lens constituting the autofocus glasses according to an embodiment of the present invention.
5 is a view for explaining a change in the focus of the lens according to the focal length information in the autofocus glasses according to an embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, although the Example of this invention is described in detail, this invention is not limited to a following example, unless the summary is exceeded.

2 is a view showing the auto focus glasses according to the present invention, Figure 3 is a block diagram showing the configuration of the auto focus glasses according to the present invention.

2 and 3, the auto focus glasses according to the present invention, the spectacle frame 100; A pair of lenses 200 provided at left and right sides of the spectacle frame 100; A focus measuring unit 300 provided at a predetermined position of the spectacle frame 100 and measuring a focal length with respect to the direction in which the pair of lenses 200 face; And a focus adjusting unit 400 for adjusting the focus of the lens 200 according to the focal length measured by the focus measuring unit 300.

The lens 200 is provided on the left and right sides of the spectacle frame 100, and each lens 200 is composed of at least one pair of lenses, or any one of temperature, voltage, light, humidity, pH, electric field and magnetic field. It may be made of a material that is deformed into a predetermined shape by one condition. As such, when the lens 200 is formed using a material deformed into a predetermined shape by a condition, the entire lens 200 may be formed of a material deformed into a predetermined shape by a condition, or the appearance of the lens 200 However, it may be formed by injecting a transparent fluid having a different refractive index from air such as water and the like.

The focus measuring unit 300 is provided at a predetermined position of the spectacle frame to measure the focal length in the direction in which the lens 200 faces. In this case, the focus measuring unit 300 may be provided at any position of the front of the spectacle frame 100, but when the focus measuring unit 300 is provided at any one side of the front of the spectacle frame 100, the actual focal length and the measured focal length may be changed, so that the spectacle frame 100 is provided. It is preferable to be provided at the center of the front surface, and an image acquisition means such as a complementary metal-oxide semiconductor (CMOS) image sensor or a charge-coupled device (CCD) camera having an autofocus function may be used.

The focus adjusting unit 400 is provided at a predetermined position of the spectacle frame 100 to adjust the focus of the lens 200 according to the focal length measured by the focus measuring unit 300. The focus is adjusted by changing the curvature of the lens 200 by moving the distance, or making conditions such as temperature, voltage, light, humidity, pH, electric field, and magnetic field. In addition, the focus adjusting unit 400 may adjust the focus of the pair of lenses 200 at the same time, but when the binocular vision of the user is different, the focus of each of the left or right lenses may be adjusted independently.

As described above, the auto focus glasses according to the present invention do not artificially adjust the focus of the lens 200, but are automatically adjusted through the focus measuring unit 300 and the focus adjusting unit 400. In addition, a power supply unit (not shown) for driving should be further provided in the focus measuring unit 300 and the focus adjusting unit 400.

In the present invention through such a configuration, by adjusting the focus of the lens 200 by using the focal length information measured by the focus measuring unit 300 provided in the spectacle frame 100, one focus on the entire lens 200. It is possible to eliminate the inconvenience of moving the gaze to a specific position of the lens 200 in accordance with the distance to see the object in the distance, thereby providing a user with convenience and wide field of view.

4 is a view showing a cross-sectional structure of the glasses for explaining the lens constituting the autofocus glasses according to an embodiment of the present invention, Figure 5 is a focal length information in the autofocus glasses according to an embodiment of the present invention It is a figure for explaining the change of focus of a lens according to this.

Referring to FIG. 4, in an embodiment of the present invention, the pair of lenses 200 provided in the spectacle frame 100 are respectively fixed to the spectacle frame 100 and the first lens 210 and the first lens 210. The second lens 220 is provided to be spaced apart from the rear of the predetermined distance). In this case, the second lens 220 is configured to be movable back and forth within the spectacle frame 100 to adjust the focus of the lens 200 according to the distance between the first lens 210 and the second lens 220. It is composed.

In other words, as shown in FIG. 5, the first lens 210 and the second lens 220 are brought into close contact with each other by moving the second lens 220 using the focus adjuster according to the focal length, or the second lens ( The focus of the lens 200 may be adjusted by adjusting the distance between the first lens 210 and the second lens 220 by separating the 220 from the first lens 210. In this case, a space in which the second lens 220 may move may be formed in the spectacle frame 100, such as a rail, and the second lens 220 may include a driving means such as an ultra-small stem motor. 220 may move within the spectacle frame 100.

Here, although the first lens 210 is fixed to the spectacle frame 100 and the second lens 220 is described as being movable, the second lens 220 is fixed to the spectacle frame 100 and the first lens ( 210 may be configured to be movable.

On the other hand, although not shown in the drawings, in addition to the above configuration may be applied to various configurations that can adjust the focus of the lens, as described above, the lens, such as temperature, voltage, light, humidity, pH, electric field and magnetic field, etc. It is composed of a material whose shape is changed under the same conditions, and the focus control unit is configured to create a condition that can change the shape of the lens such as changing the temperature of the lens or applying a voltage or current of a predetermined size to the lens. The curvature of the lens may be changed according to a condition applied to the lens to adjust the focus. At this time, according to the conditions applied to the lens, the lens is stretched and contracted in the vertical direction or the left and right direction, the shape is changed, the curvature change may occur, in this case, the shape of the lens is changed to prevent the eyeglass frame from being damaged It is also possible to smoothly change the shape of the lens by opening part of the configuration.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims and equivalents thereof.

100: frame 200: lens
300: focus measuring unit 400: focus adjusting unit

Claims

Eyeglass frames;
A pair of lenses respectively provided on the left side and the right side of the spectacle frame;
A focus measuring unit provided at a predetermined position of the spectacle frame and measuring a focal length; And
A focus adjusting unit connected to the pair of lenses and a focus measuring unit to adjust the focus of the lens according to the focal length measured by the focus measuring unit;
Autofocus glasses, characterized in that configured to include.

The method of claim 1,
The pair of lenses, respectively
A first lens fixed to the spectacle frame and a second lens provided at a predetermined distance from the first lens,
And the second lens is connected to the focus adjuster and configured to be movable in the spectacle frame.

The method of claim 1,
The pair of lenses,
It is formed of a material whose shape is changed by any one of temperature, voltage, light, humidity, pH, electric field and magnetic field.
The focus adjusting unit adjusts the focus of the lens by changing the curvature of the lens by making any one of the temperature, voltage, light, humidity, pH, electric field and magnetic field according to the focal length measured by the focus measuring unit. Auto focus glasses, characterized in that.

The method of claim 1,
The focus measuring unit,
Autofocus glasses, characterized in that the CMOS image sensor or CCD camera with the autofocus function.

The method of claim 1,
The focus adjusting unit,
Autofocus glasses, characterized in that configured to be able to independently adjust the focus of each of the pair of lenses.

The method of claim 1,
The focus adjusting unit,
Autofocus glasses, characterized in that configured to adjust the focus of each of the pair of lenses at the same time.