KR20060093596A - Method for measuring diopter of lens using mobile terminal device - Google Patents

Method for measuring diopter of lens using mobile terminal device Download PDF

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KR20060093596A
KR20060093596A KR1020050014688A KR20050014688A KR20060093596A KR 20060093596 A KR20060093596 A KR 20060093596A KR 1020050014688 A KR1020050014688 A KR 1020050014688A KR 20050014688 A KR20050014688 A KR 20050014688A KR 20060093596 A KR20060093596 A KR 20060093596A
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diopter
lens
measurement pattern
photographing
mobile terminal
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KR1020050014688A
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Korean (ko)
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이광준
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엘지전자 주식회사
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract

본 발명은 이동단말기의 디옵터 측정 방법에 관한 것으로 특히, 이동단말기에 디옵터 측정 기능을 탑재함으로써 사용자가 간편하게 렌즈의 디옵터를 측정할 수 있도록 함에 그 목적이 있다. 이러한 목적의 본 발명은 단말기 메뉴에서 디옵터 측정모드를 설정하는 단계와, 단말기 카메라를 이용하여 측정용 패턴을 촬영한 후 렌즈를 통해 측정용 패턴을 다시 촬영하는 단계와, 상기 촬영된 2개의 영상을 비교하여 측정용 패턴의 이동거리를 산출하고 그 산출된 이동거리를 연산하여 렌즈의 디옵터를 산출하는 단계와, 상기 산출된 디옵터 값을 엘씨디(LCD) 또는 스피커를 이용하여 사용자에게 알리는 단계를 수행하도록 구성한다. The present invention relates to a method of measuring the diopter of a mobile terminal, and more particularly, to provide a diopter measuring function to a mobile terminal so that a user can easily measure the diopter of a lens. In accordance with an aspect of the present invention, there is provided a method of setting a diopter measurement mode in a terminal menu, photographing a measurement pattern using a terminal camera, and then again photographing the measurement pattern through a lens, and photographing the two images. Comparing to calculate the moving distance of the measurement pattern and calculating the calculated movement distance to calculate the diopter of the lens, and to inform the user of the calculated diopter value by using the LCD (LCD) or speaker Configure.

Description

이동단말기의 디옵터 측정 방법{METHOD FOR MEASURING DIOPTER OF LENS USING MOBILE TERMINAL DEVICE} Method for measuring diopter of mobile terminal {METHOD FOR MEASURING DIOPTER OF LENS USING MOBILE TERMINAL DEVICE}

도1은 본 발명의 실시 예에서 디옵터 측정 과정을 보인 동작 순서도. 1 is a flowchart illustrating a diopter measurement process according to an embodiment of the present invention.

도2는 도1에서 측정용 패턴의 촬영을 위한 안경의 위치를 보인 예시도. Figure 2 is an exemplary view showing the position of the glasses for photographing the measurement pattern in Figure 1;

도3은 도1 또는 도2에서 측정용 패턴의 촬영영상을 보인 예시도. Figure 3 is an exemplary view showing a photographed image of the measurement pattern in Figure 1 or 2;

* 도면의 주요부분에 대한 부호 설명 * Explanation of symbols on the main parts of the drawings

210 : 측정용 패턴 220 : 안경 210: measurement pattern 220: glasses

230 : 휴대폰 230: Mobile Phone

본 발명은 이동단말기에 관한 것으로 특히, 카메라 장착된 이동단말기에 있어서 디옵터 측정 방법에 관한 것이다. The present invention relates to a mobile terminal, and more particularly, to a diopter measuring method in a camera-equipped mobile terminal.

인간의 눈은 초점을 정확히 맞추지 못하는 경우 물체를 제대로 볼 수 없다. The human eye cannot see an object properly if it cannot focus properly.

이는 근시는 망막 앞에 초점이 맺어지는 경우이고, 원시는 망막 뒤에 초점이 맺어지는 경우에 의한다. 그리고 난시는 정확히 초점이 맺어지지 못하고 물체가 이중으로 보이는 경우이다. This is when myopia is focused in front of the retina and primitive is in focus behind the retina. And astigmatism is a case in which the object cannot be seen exactly in focus and the object appears double.

따라서, 눈에 결함이 발생하여 물체를 정확히 볼 수 없는 경우에는 렌즈를 착용하여 시력을 보정할 필요가 있다. Therefore, when a defect occurs in an eye and an object cannot be seen accurately, it is necessary to correct a vision by wearing a lens.

렌즈의 굴절도는 디옵터(diopter)로 나타내며, 단위는 m로 표현된다. 즉, 수정체를 조절하지 않은 상태에서 망막에 상을 정확히 맺히게 할 수 있는 물체까지의 거리를 미터(m)로 표시한 수치의 역수를 디옵터라 한다. The refractive index of the lens is expressed in diopters and the unit is expressed in m. In other words, the reciprocal of the numerical value expressed in meters (m) is the distance to an object that can form an image on the retina accurately without adjusting the lens.

디옵터는 디옵트리(dioptrie)라고도 하며, 기호는 Dptr 또는 D.으로 표시한다. 예를 들어, 렌즈의 꼭지점 거리가 0.5m라면 굴절도는 2D이다. Diopters are also called dioptrie and the symbol is denoted by Dptr or D. For example, if the vertex distance of the lens is 0.5m, the degree of refraction is 2D.

그런데, 디옵터를 표시할 때 근시용의 오목렌즈에는 음의 부호, 원시용의 볼록렌즈에는 양의 부호를 붙인다. 즉, (+)5D는 초점거리(20cm = 1/5m)의 볼록렌즈, (-)0.5D는 초점거리 2m의 오목렌즈를 나타낸다. By the way, when the diopter is displayed, a negative sign is attached to the concave lens for myopia and a positive sign is used for the convex lens for the far field. That is, (+) 5D represents a convex lens having a focal length (20 cm = 1/5 m), and (−) 0.5 D represents a concave lens having a focal length 2 m.

예를 들어, -1.0디옵터이면 1m 안은 잘 볼 수 있는 시력, -10.0디옵터이면 0.1m(= 10cm) 안까지 잘 볼 수 있는 시력을 의미한다. For example, a -1.0 diopter means a good visual acuity within 1 m, and a -10.0 diopter means a visual acuity within 0.1 m (= 10 cm).

그러나, 종래에는 시력 또는 렌즈의 디옵터를 측정하고자 하는 경우라면 안경점이나 안과병원을 직접 찾아가야 하는 불편함을 감수하여야 한다. However, conventionally, if you want to measure the diopter of the eyesight or lens, you have to bear the inconvenience of having to go directly to the optician or ophthalmology hospital.

따라서, 본 발명은 종래의 불편함을 개선하기 위하여 이동단말기에 디옵터 측정 기능을 탑재함으로써 사용자가 간편하게 렌즈의 디옵터를 측정할 수 있도록 창안한 이동단말기의 디옵터 측정 방법을 제공하는데 그 목적이 있다. Accordingly, an object of the present invention is to provide a diopter measuring method of a mobile terminal invented so that a user can easily measure the diopter of a lens by mounting a diopter measuring function in a mobile terminal to improve the conventional inconvenience.

본 발명은 상기의 목적을 달성하기 위하여 단말기 메뉴에서 디옵터 측정 모 드를 설정하는 단계와, 측정용 패턴을 직접 촬영하는 단계와, 측정용 패턴과 카메라 사이의 소정 위치에 렌즈를 위치시켜 그 렌즈를 통해 측정용 패턴을 촬영하는 단계와, 1차 촬영화상과 2차 촬영화상을 비교하여 패턴의 이동거리를 산출하는 단계와, 상기 산출된 이동거리를 디옵터로 환산하여 표시하는 단계를 수행하도록 구성함을 특징으로 한다. In order to achieve the above object, the present invention provides a method of setting a diopter measurement mode in a terminal menu, directly photographing a measurement pattern, and positioning the lens at a predetermined position between the measurement pattern and the camera. Photographing the pattern for measurement, comparing the first photographing image with the second photographing image, calculating a moving distance of the pattern, and converting the calculated moving distance into a diopter to display It is characterized by.

이하, 본 발명을 도면에 의거 상세히 설명하면 다음과 같다. Hereinafter, the present invention will be described in detail with reference to the drawings.

본 발명의 실시 예에서 이동단말기는 휴대폰이라 가정하여 설명하기로 한다. In the embodiment of the present invention, a mobile terminal will be described on the assumption that it is a mobile phone.

도1은 본 발명의 실시 예에서 디옵터 측정 과정을 보인 동작 순서도로서 이에 도시한 바와 같이, 단말기 메뉴에서 디옵터 측정모드를 설정하는 단계와, 단말기 카메라를 이용하여 측정용 패턴을 촬영한 후 렌즈를 통해 측정용 패턴을 다시 촬영하는 단계와, 상기 촬영된 2개의 영상을 비교하여 측정용 패턴의 이동거리를 산출하고 그 산출된 이동거리를 연산하여 렌즈의 디옵터를 산출하는 단계와, 상기 산출된 디옵터 값을 엘씨디(LCD) 또는 스피커를 이용하여 사용자에게 알리는 단계를 수행하도록 구성한다. 1 is a flowchart illustrating a diopter measurement process according to an exemplary embodiment of the present invention. As shown in FIG. 1, a diopter measurement mode is set in a terminal menu and a measurement pattern is photographed using a terminal camera. Photographing the measurement pattern again, comparing the two photographed images to calculate a moving distance of the measuring pattern, calculating the calculated moving distance, and calculating a diopter of the lens; and the calculated diopter value To perform the step of notifying the user using an LCD or a speaker.

이와 같이 구성한 본 발명의 실시 예에 대한 동작 및 작용 효과를 도2 및 도3을 참조하여 설명하면 다음과 같다. Referring to Figures 2 and 3 the operation and effect of the embodiment of the present invention configured as described above are as follows.

사용자는 휴대폰(230)의 메뉴에서 디옵터 측정모드를 설정한다. The user sets the diopter measurement mode in the menu of the mobile phone 230.

이후, 측정용 패턴(210)으로부터 소정거리에서 휴대폰(230)에 결합된 카메라를 이용하여 측정용 패턴(210)을 직접 촬영한다. 이때, 단말기 제어부(도면 미도시)는 촬영된 패턴 영상을 저장한다. 여기서, 렌즈(220)를 거치하지 않은 상태에서 촬영된 영상은 도3(a)이다. Thereafter, the measurement pattern 210 is directly photographed using a camera coupled to the mobile phone 230 at a predetermined distance from the measurement pattern 210. In this case, the terminal controller (not shown) stores the photographed pattern image. Here, the image photographed without the lens 220 is shown in FIG. 3 (a).

이후, 사용자는 측정용 패턴(210)과 휴대폰(230)에 결합된 카메라 사이의 소정 위치에 안경(220)을 거치시키고 카메라를 이용하여 측정용 패턴(210)을 촬영한다. 즉, 사용자는 도2의 예시도에 도시한 바와 같이 측정용 패턴(210)과 휴대폰(230) 사이에 거치시킨 안경(220)을 통해 보이는 측정용 패턴(210)을 촬영한다. 이때, 안경(220)이 근시용으로 가정하면 측정용 패턴은 도3(b)와 같이 보이게 되며, 단말기 제어부(도면 미도시)는 도3(b)와 같이 촬영된 패턴영상을 저장하게 된다. Thereafter, the user mounts the glasses 220 at a predetermined position between the measurement pattern 210 and the camera coupled to the mobile phone 230 and photographs the measurement pattern 210 using the camera. That is, the user photographs the measurement pattern 210 seen through the glasses 220 mounted between the measurement pattern 210 and the mobile phone 230 as shown in the exemplary diagram of FIG. 2. In this case, when the glasses 220 are assumed for myopia, the measurement pattern is shown as shown in FIG. 3 (b), and the terminal controller (not shown) stores the pattern image photographed as shown in FIG. 3 (b).

이후, 단말기 제어부(도면 미도시)는 2개의 패턴 영상을 비교하여 측정용 패턴의 이동거리를 산출한다. 즉, 안경(220)의 렌즈가 굴절력이 있으므로 도3(a)(b)의 촬영영상을 비교하면 수평축과 수직축을 따라 이동된 거리를 알 수 있다. Thereafter, the terminal controller (not shown) compares the two pattern images to calculate a moving distance of the measurement pattern. That is, since the lens of the eyeglasses 220 has refractive power, the distance moved along the horizontal axis and the vertical axis can be seen by comparing the photographed images of FIGS. 3A and 3B.

이에 따라, 단말기 제어부(도면 미도시)는 미리 작성된 테이블에서 이동거리에 상응하는 디옵터 값을 읽어 엘씨디에 숫자로 표시하거나 스피커를 통해 알리게 된다. Accordingly, the terminal controller (not shown) reads the diopter value corresponding to the moving distance from the table prepared in advance and displays the number in the LCD or notifies the speaker.

다시 말해서, 본 발명은 휴대폰(230)에 결합된 카메라를 이용하여 소정 위치에서 측정용 패턴(210)을 직접 촬영하고 이어서 측정용 패턴과 카메라 사이에 측정하고자 하는 안경(220)을 위치시킨 상태에서 측정용 패턴(210)을 촬영한 후 1차 패턴 영상과 2차 패턴 영상을 비교하여 패턴의 이동거리를 산출하며 그 계산된 거리에 따른 디옵터를 테이블에서 읽어낸다. In other words, the present invention directly photographs the measurement pattern 210 at a predetermined position using a camera coupled to the mobile phone 230, and then in the state of placing the glasses 220 to be measured between the measurement pattern and the camera. After photographing the measurement pattern 210, the first and second pattern images are compared to calculate a moving distance of the pattern, and the diopter according to the calculated distance is read from the table.

한편, 상기에서 근시용의 오목렌즈의 경우를 가정하여 설명하였지만, 원시용의 볼롤렌지의 경우에도 동일한 과정으로 디옵터를 측정할 수 있다. On the other hand, while the above-described case of a concave lens for myopia was assumed, the diopter can be measured in the same process also in the case of a raw ballolenzyme.

상기에서 본 발명에 대한 실시예를 참조하여 설명하였지만, 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경할 수 있다. Although the above has been described with reference to the embodiments of the present invention, various modifications and changes of the present invention can be made without departing from the spirit and scope of the invention as set forth in the claims.

상기에서 상세히 설명한 바와 같이 본 발명은 이동단말기(예로, 휴대폰)을 이용하여 안경 렌즈의 디옵터를 간편하게 측정할 수 있어 사용자가 안경 렌즈의 굴절도를 확인하기 위해 안경점 또는 안과병원을 직접 방문할 필요가 없이 종래의 불편함을 해소시킬 수 있는 효과를 발휘하게 된다. As described in detail above, the present invention can easily measure the diopter of the spectacle lens using a mobile terminal (for example, a mobile phone), so that the user does not have to visit an optician or an ophthalmology hospital to check the refractive index of the spectacle lens. The effect which can eliminate the conventional inconvenience is exhibited.

Claims (2)

디옵터 측정 모드를 설정하는 단계와, Setting the diopter measurement mode, 측정용 패턴을 촬영하는 단계와, Photographing the measurement pattern; 측정용 패턴과 카메라 사이의 소정 위치에 렌즈를 위치시키는 단계와, Positioning the lens at a predetermined position between the measurement pattern and the camera; 상기 렌즈를 통해 측정용 패턴을 촬영하는 단계와, Photographing the measurement pattern through the lens; 1차 촬영화상과 2차 촬영화상을 비교하여 패턴의 이동거리를 산출하는 단계와, Calculating a moving distance of the pattern by comparing the first photographing image and the second photographing image, 상기 산출된 이동거리를 디옵터로 환산하여 표시하는 단계를 수행하도록 구성함을 특징으로 하는 이동단말기의 디옵터 측정 방법. And converting the calculated moving distance into diopters and displaying the diopters. 제1항에 있어서, 디옵터 환산은 미리 작성된 테이블에서 읽어오는 것을 특징으로 하는 이동단말기의 디옵터 측정 방법. The method of claim 1, wherein the diopter conversion is read from a previously prepared table.
KR1020050014688A 2005-02-22 2005-02-22 Method for measuring diopter of lens using mobile terminal device KR20060093596A (en)

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