KR101628217B1 - Progressive lens measurement method of the lensmeter - Google Patents

Abstract

The present invention relates to a method for measuring a progressive lens, which enables an inspector to easily measure an progressive lens by displaying a direction and extent of a lens to be moved when automatically storing information of a long distance part and moving to a short distance part. More specifically, the method for measuring a progressive lens, comprises: a step of selecting a progressive mode after moving a progressive lens to a measuring position, and displaying a long distance part target and a position indicator on a screen; a step of checking whether the position indicator reaches the center of the long distance part target when the progressive lens is moved; a step of sending a signal tone with respect to completion of searching the long distance part when the position indicator reaches the center of the long distance part target, and automatically storing a long distance part measured value; a step of displaying a short distance part target on the screen; a step of guiding a route from the center of the long distance part target to the short distance part target; a step of inducing a moving route of the progressive lens; and a step of sending a signal tone with respect to completion of searching the short distance part during inducing the moving route of the progressive lens, and automatically storing a short distance part measured value.

Description

[0001] The present invention relates to a progressive lens measurement method,

The present invention relates to a progressive lens measuring method of a lens meter, and more particularly, to a method for measuring progressive lenses of a lens meter, which automatically stores information of a distance part and displays a direction and degree of movement of the lens when moving to a near part, The present invention relates to a progressive lens measuring method for a lens meter.

The eyes of the human being become less agile and less able to control, so they can not see the near objects correctly. Therefore, it is common for people over 40 to use newspapers or magazines when reading newspapers or books, or to use separate magnifying glasses. As the society becomes more industrialized and aged, such presbyterians become more common problems than in the past. In such a presbyopia, a bifocal lens for viewing distant objects and a clearly distinguishable bifocal lens for viewing near objects, such as a magnifying glass, were generally used. However, since such a bifocal lens has a clear distinction between the far-field portion and the near-field portion, the wearer's adaptation period is required, and since there is an invisible region at the time of visual field transition, .

In order to compensate for the disadvantages of such conventional bifocal lenses, a progressive multifocal lens (progressive lens) that eliminates the discontinuity boundary between the far-field portion and the near-field portion has been developed and widely used recently.

In order to measure the refractive power of the progressive lens, first, the refractive power of the distal end portion is measured. After the lens is moved, the refractive power of the near portion is measured, and the difference between the two refractive powers becomes the progressive refractive power. Since the progressive progressive lens, that is, the progressive lens not fitted to the spectacle frame, has a display line for the center of the distance part, the center of the near part, and the horizontal reference line, the progressive power can be recognized without the aid of the automatic lens meter, It is very difficult to measure the progressive power without information on the current measurement point and the movement direction, and even if measured, it shows a large difference from the true value.

The lens meter is a type of optoelectronic measuring instrument used for measuring various characteristics of a lens to be measured such as refractive power, naked vision power, and astigmatism axis. The conventional manual lens meter has no apparatus for measuring the refractive power of such a progressive lens, Recently, an automatic lens meter capable of measuring the refractive power of a progressive lens has been developed and used.

The conventional automatic lens meter currently used measures and stores the refractive power of the distance portion and displays a graph of the difference between the measured refractive power of each point and the distracting power of the distant portion and displays the difference between the measured refractive power of each position and the maximum difference As a progressive power.

Conventional techniques for a lens meter for measuring a progressive lens are disclosed in Korean Patent Laid-Open Publication No. 10-2007-0053289 (published on May 23, 2007) and Korean Patent Laid-open Publication No. 2000 2003-0046118 (published on Jun. 12, 2003).

The prior art disclosed in Patent Document 1 includes a light source for projecting a measurement light beam to a target lens, a measurement optical system having a light receiving sensor for receiving a measurement light beam passing through the object lens, A mode selection means for selecting a short focal lens measurement mode and a progressive lens measurement mode and a progressive lens measurement mode are selected and arranged so that the measurement position comes into the near portion of the progressive lens serving as a target lens, Detecting means for detecting a direction and an extent deviating from the near portion of the current measurement position based on the optical characteristic of the position; a display portion for displaying an alignment screen; A guide mark for indicating the direction and the degree of movement of the lens to be displayed on the display unit And a unit.

The prior art thus configured facilitates accurate alignment for measuring progressive lenses.

The prior art disclosed in Patent Document 2 includes an optical measuring unit that scans light while varying the position of a progressive multifocal lens to be measured and detects a positional displacement of signal light passing through the measured lens; Calculating a spherical refractive power, an astigmatism power, and a firing time from the positional displacement, calculating information on finding a focal point center point on the basis of the determined far-end part focal point, An electronic control unit; A mechanism part for fixing the measured lens and observing and manipulating the measured lens; And a display unit for displaying measurement results and measurement information.

The prior art thus configured provides an automatic lens meter for measuring the progressive power of a progressive multifocal lens equipped with both a distance portion for viewing a distant object and a near portion for viewing a near object.

Korean Patent Publication No. 10-2007-0053289 (published on May 23, 2007) Korean Unexamined Patent Application Publication No. 2003-0046118 (published on Jun. 12, 2003)

However, the conventional lens meters and conventional techniques require complicated procedures for recognizing progressive lenses. In the method for locating the near portion in the far-field portion, since the correct lens movement direction can not be provided to the observer, It takes a long time and causes a lot of measurement errors.

It is an object of the present invention to solve the problems of the progressive lens measuring method and the conventional techniques using a general lens meter as described above, and it is an object of the present invention to automatically store the information of the far- Direction and degree of the progressive lens are displayed on the screen so that the examiner can easily measure the progressive lens.

According to an aspect of the present invention, there is provided a progressive lens measuring method for a lens meter, comprising the steps of: (a) selecting a progressive mode in a state in which a progressive lens is moved to a measurement position; (b) if the progressive mode is selected, displaying a remote target and a location indicator on the screen; (c) confirming whether the position indicator reaches the center of the far-site target when the progressive lens is moved; (d) when the position indicator reaches the center of the far-site target, transmitting a beep for the far-site search completion and automatically storing the far-field measurement value; (e) displaying a near-end target on a screen after step (d); (f) guiding a path from the center of the far-site target to the near-field target; (g) deriving a movement path of the progressive lens after step (f); (h) when the position indicator reaches the center of the near portion target in the middle of inducing the movement path of the progressive lens, transmitting a beep for completion of the near portion search and automatically storing the near portion measurement value .

Further, the method of measuring progressive lenses of a lens meter according to the present invention may further include the steps of: (i) printing out the measured values of the far and near portions stored on the sheet after the step (h).

In the step (c), it is confirmed whether the position indicator has reached the center of the far-site target through comparison of the position value of the position indicator and the position value of the far-site target.

Wherein the step (f) includes the steps of: (f1) generating a path from the center of the far-site target to the near target; (f2) displaying the created route on the screen.

The step (g) includes the steps of: (g1) comparing a moving position value of the progressive lens with a position value of the path to confirm a path deviation; (g2) generating an alarm sound for a departure from the route when the route departure occurs as a result of the checking in the step (g1); (g3) guiding the movement path of the progressive lens so that the set path can be searched when the path deviation occurs.

The step (g3) is characterized in that the path is guided visually so that the set path and the current position are displayed on the screen so that the set path can be searched.

In the step (g3), the movement information of the progressive lens is voiced to guide the path so that the set path can be found.

According to the present invention, there is an advantage that the examiner can easily measure the progressive lens by automatically storing the information of the far-site part and displaying the path information to move the lens when moving to the near part, on the screen.

1 is an external view of a lens meter to which the present invention is applied,
FIG. 2 is a block diagram of a progressive lens measuring apparatus of a lens meter to which the present invention is applied.
FIGS. 3A and 3B are flowcharts illustrating a progressive lens measuring method of a lens meter according to a preferred embodiment of the present invention;
Fig. 4 is a diagram showing an example of a progressive area of a progressive lens according to the present invention,
FIGS. 5A and 5B are diagrams illustrating an example of a distance measurement screen in the present invention,
6A to 6C are diagrams illustrating a near-field measurement screen according to the present invention,
7A to 7J are diagrams illustrating examples of a screen of a route guidance target newly proposed in the present invention.

Hereinafter, a progressive lens measuring method of a lens meter according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an external perspective view of a lens meter 10 to which the present invention is applied. The lens meter 10 includes a lens meter 20 for measuring the optical characteristics of the spectacle lens 1 according to the corrected visual acuity; And a UV transmittance measuring device 30 for measuring the UV transmittance. The optical characteristics may include a spherical power, a cylindrical power, and a cylindrical axis.

2 is a block diagram of a progressive lens measuring apparatus of a lens meter to which the present invention is applied and includes an optical measuring unit 110, an input unit 120, a control unit 130, a display unit 140, a storage unit 150, A generating unit 160, and a voice transmitting unit 170.

The optical measuring unit 110 measures optical characteristics such as a spherical power, a cylindrical power, and a cylindrical axis.

The input unit 120 is a portion for operating a button for selecting a progressive mode or selecting a measurement value output. The display unit 140 includes a progressive lens measurement screen, near target target information, distance target target information, Route information, route guidance information, and the like on the screen.

The storage unit 150 stores the far-field measurement value and the near-field measurement value under the control of the controller 130, and additionally stores a control program for generating a route.

When the position indicator is located at the center of the target according to the control of the controller 130, the beep sound generator 160 generates a beep sound. When a path deviation occurs during movement of the progressive lens from the distant portion to the near portion, .

The voice transmitting unit 170 transmits the guidance voice for route guidance in accordance with the control of the controller 130.

The control unit 130 is responsible for overall control of the distance part and the near part measurement of the progressive lens. Here, the overall control is the same as that of FIGS. 3A to 3B described below.

FIGS. 3A and 3B are flowcharts illustrating a progressive lens measuring method of a lens meter according to a preferred embodiment of the present invention, wherein S represents a step.

As shown in FIGS. 3A and 3B, the progressive lens measuring method of the lens meter according to the present invention includes the steps of: (a) selecting a progressive mode (S101 to S102) while the progressive lens is moved to a measurement position; (b) if the progressive mode is selected, displaying a distance target target and a location indicator on the screen (S103); (c) confirming whether the position indicator reaches the center of the far-site target when the progressive lens is moved (S104 to S105); (d) when the position indicator reaches the center of the far-site target, transmitting a beep for the far-site search completion and automatically storing the far-field measurement value (S106 to S107); (e) displaying a near-end target on a screen after the step (d) (S108); (f) a step (S109 to S110) of guiding a path from the center of the far-site sub-target to the near-field target; (g) deriving a movement path of the progressive lens after the step (f) (S111 to S114); (h) a step of transmitting a signal for completion of the near portion searching and automatically storing the near portion measurement value when the position indicator reaches the central portion of the near portion target in the middle of inducing the movement path of the progressive lens (S115 to S117 ); (i) printing and outputting the measured values of the distance portion and the near portion stored after the step (h) (S118).

In the step (c), it is preferable to confirm whether the position indicator has reached the center of the far-site target through comparison of the position value of the position indicator and the position value of the far-site target.

The step (f) includes the steps of: (f1) generating a path from the center of the far-site target to the near-field target (S109); (f2) displaying the created route on the screen (S110).

The step (g) includes the steps of: (g1) comparing the moving position value of the progressive lens with the position value of the path to confirm the path deviation (S111 to S112); (g2) a step S113 of generating an alarm sound for a departure from the path when the path is deviated as a result of the step g1; (g3) a step S114 of deriving a path of movement of the progressive lens so as to search for the set path when the path deviation occurs.

In step (g3), the setup path and the current position are displayed on the screen to visually guide the path so that the setup path can be searched, or the movement information of the progressive lens is sent out by voice so that the setup path can be searched, Which leads to a path using at least one of the following.

The progressive lens measuring method of the lens meter according to the present invention will now be described in detail with reference to FIGS. 1 to 7J.

First, in order to measure the optical characteristics of the progressive lens, the progressive lens 1 to be measured is moved to the measurement position in step S101. Here, in the method of moving the progressive lens 1 to be measured to the measurement position, the examiner directly places the progressive lens 1 at the corresponding position manually.

Thereafter, the examiner selects the progressive mode for measuring the progressive lens 1 through the input unit 120. [ Here, the progressive mode is a manual mode in which the progressive mode is immediately executed by pressing the [PROG] button and the lens is moved slowly to the front / back / left / right and the progressive area is found . To use progressive lens auto mode, set 'PROG RUN' item in SETUP mode to 'AUTO'. 4 is an exemplary view of a progressive area of a progressive lens.

After the progressive mode is selected and a progressive lens measurement command is input, in step S103, the remote target and the position indicator are displayed on the screen. FIG. 5A shows the far-site target 102 and the location indicator 101 displayed on the screen. Here, the position indicator 101 indicates the position of the progressive lens 1 being measured.

When the distance target marker 102 and the position indicator 101 are displayed on the screen, the inspector checks the position indicator 101 to align the progressive lens 1 with the far end region (the far end target 102) The progressive lens 1 is horizontally moved so as to coincide with the horizontal center. After moving the progressive lens 1 horizontally and moving to the far-site region, the progressive lens 1 is vertically moved to the far-field region. Here, when the progressive lens is moved vertically, a process of moving the progressive lens 1 to the horizontal center again should be performed.

When the progressive lens 1 is moved as described above, the position indicator 101 continuously checks whether the position indicator 101 reaches the center of the far-site target 102 when the progressive lens 1 is moved in step S105. As a method for confirming whether or not the position indicator 101 reaches the center of the far-end target target 102, the position indicator 101 is compared with the position indicator 101 by comparing the position value of the position indicator 101 with the position value of the far- (101) reaches the center of the far-site secondary target (102). The position value has coordinate values for each position on the screen of the progressive lens measurement value, and these coordinate values can be utilized as position values.

5B, when the position indicator 101 reaches the center of the far-end target target 102, the control unit 130 in step S106 determines whether or not the position indicator 101 reaches the center of the far- And transmits the beep for completion of the far-site search. When a signal sound for the search completion is transmitted through the signal generating unit 160, the examiner completes the far-site search and terminates the movement of the progressive-lens subarea of the progressive lens. Thereafter, the measurement of the far-end portion of the progressive lens is performed in the normal manner via the optical measurement unit 110, and the measured far-end measurement value is automatically stored in the storage unit 150 in step S107.

When the far-site measurement is completed, the process proceeds to step S108, where the control unit 130 displays the near-field target 103 on the screen as shown in FIG. 6A. Then, in step S109, a path that is a movement path from the distance part to the near part target is created so that the examiner can easily find the near part with the distance part. Here, the path generation can generate the path by connecting the center of the target of the far-site part to the target center of the near-field part.

Thereafter, in step S110, the generated path 104 is displayed on the screen. When the progressive lens path 104 is displayed on the screen, the inspector moves the progressive lens 1 to the near-field region in step S111. At this time, it is preferable to move the progressive lens 1 to the near portion region while viewing the path 104. That is, the progressive lens 1 is moved so that the position indicator 105 reaches the center of the near portion target 103. In this case as well, it is preferable to move the progressive lens 1 while paying attention so that the angle of the progressive lens 1 is not lifted or fixed.

When the progressive lens 1 starts to move, in step S112, the movement position value (position indicator position) of the progressive lens 1 is compared with the position value of the path 104 to confirm the path deviation. By comparing the two position values, it is possible to know whether or not the path is deviated.

If it is determined that the two position values are different from each other, it is determined that the route departure has occurred, and the procedure goes to step S113 to generate an alarm sound for the route departure. The alarm sound generated here is differentiated from a signal sound generated when the position indicator is located at the center of the target targeted.

When an alarm sound is generated, the inspector judges that the path has deviated, and stops moving the progressive lens. At this time, in step S114, the departed path is guided to go back to the set path. Here, the present invention provides two methods of visual guidance and auditory guidance. Providing information about the route guidance may provide either one of the above two methods or both at the same time.

For example, as shown in FIG. 6B, the setup path 104 and the current position 105 are displayed on the screen, and the path is guided visually so that the setup path can be found. The examiner looks at the screen and moves the progressive lens horizontally to move the progressive lens horizontally so that the position indicator is above the horizontal reference line. Then, when the position indicator comes on the horizontal reference line, it moves the progressive lens in the vertical direction again and moves to the center of the near-infrared target.

In addition, the movement information of the progressive lens can be voiced to guide the path so that the setup path can be searched through the voice transmission unit 170. A voice-guided pathway can be a voice that tells you how much to move in either direction (left or right) horizontally from your current location. The movement amount can be calculated based on the position information. That is, the current position coordinate value and the position coordinate value of the horizontal reference line are compared with each other, and the direction to move is determined, and the movement amount is calculated based on the difference of the coordinate values. Through this pathway guidance, the examiner moves the progressive lens in that direction and positions the position marker on the horizontal reference line.

When the path guidance is completed, the inspector moves the progressive lens again in the vertical direction.

Thereafter, in step S115, it is confirmed whether the position indicator 105 reaches the center of the near portion target in the course of guiding the moving path of the progressive lens.

As a method for confirming whether or not the position indicator 105 reaches the center of the near portion target 103, the position indicator 105 is compared with the position indicator 105 by comparing the position value of the position indicator 105 with the position value of the near- (105) reaches the center of the near-infrared target (103). The position value has coordinate values for each position on the screen of the progressive lens measurement value, and these coordinate values can be utilized as position values.

When the position indicator 105 arrives at the center of the near-field target 103 through the positional comparison, the control unit 130 transmits a beep for completing the near portion search through the beep sound generating unit 160 in step S116 . When the signal for the near part search completion is transmitted through the signal generating unit 160, the inspector completes the progressive lens measurement. Here, at the time of completion of the near portion search, the near portion of the progressive lens is measured through the optical measuring unit 110 in a normal manner as in Step S117, and the measured near portion measurement value is automatically stored in the storage unit 150, .

Then, in accordance with the print request of the inspector, the distance and near portion measurement values stored in step S118 are printed on paper and output.

7A to 7J are illustrations of various route guiding methods for guiding a route to visit a near portion in a distance-use portion.

This route guide shape can be stored in advance in the storage unit 150 at the time of shipment of the product, and a specific shape can be used by the inspector's catering selection. Alternatively, only the specific shape can be set in advance in the product, It is possible.

According to the present invention, the distance-target target is easily searched, the measurement information is automatically stored when the searching of the distance-use portion is completed, and the path information for moving the lens is displayed on the screen when moving to the near- And the like.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to finding a distance part in a lens meter for measuring a refractive power of a progressive lens and a technique for finding a near part in a distance part.

1: progressive lens
10: Lens meter
110: Optical measuring unit
120: Input unit
130:
140:
150:
160:
170:

Claims (7)

(a) selecting a progressive mode in a state in which the progressive lens is moved to a measurement position;
(b) if the progressive mode is selected, displaying a remote target and a location indicator on the screen;
(c) confirming whether the position indicator reaches the center of the far-site target when the progressive lens is moved;
(d) when the position indicator reaches the center of the far-site target, transmitting a beep for the far-site search completion and automatically storing the far-field measurement value;
(e) displaying a near-end target on a screen after step (d);
(f) guiding a path from the center of the far-site target to the near-field target;
(g) deriving a movement path of the progressive lens after step (f);
(h) transmitting a signal indicating completion of the near vision search when the position indicator reaches the center of the near target in the middle of inducing the progressive path of the progressive lens, and automatically storing the near portion measurement value,
The step (g) includes the steps of: (g1) comparing a moving position value of the progressive lens with a position value of the path to confirm a path deviation; (g2) generating an alarm sound for a departure from the route when the route departure occurs as a result of the checking in the step (g1); (g3) guiding the movement path of the progressive lens so as to search for the set path when the path deviation occurs,
In the step (g3), the movement information of the progressive lens is voiced to guide the path so that the setup path can be found through the voice dispatcher,
Wherein the step (h) verifies whether the position indicator has reached the center of the near portion target through comparison of the position value of the position indicator and the position value of the near portion target.
The method of claim 1, further comprising the step of: (i) printing out the measured values of the far-field part and the near-field part stored on the sheet after the step (h) and outputting the measured value.
The method according to claim 1, wherein the step (c) comprises checking whether the position indicator has reached the center of the far-site target through comparison of the position value of the position indicator and the position value of the far- How to measure.
The method of claim 1, wherein the step (f) includes the steps of: (f1) generating a path from the center of the far-site target to the nearest target; and (f2) displaying the generated path on a screen.
delete The method of claim 1, wherein step (g3) displays the set path and the current position on the screen to visually route the set path so that the set path can be found.


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