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EP-4477133-B1 - VISION TRAINING DEVICE

EP4477133B1EP 4477133 B1EP4477133 B1EP 4477133B1EP-4477133-B1

Inventors

  • PARK, SUNGYONG

Dates

Publication Date
20260513
Application Date
20161214

Claims (10)

  1. A vision training device, comprising: a main body (100) including at least one ocular hole (120) positioned to correspond with an eye of a user wearing the vision training device, a line of sight axis being defined to intersect with the ocular hole (120); a lens unit (410, 420) including a plurality of lenses (415, 416, 417, 418, 419, 420) respectively having different diopter values and a lens holder that supports the lenses with an interval between the lenses of the lens holder; a drive motor (600) configured to move the lens holder so that one of the lenses of the lens unit (410, 420) is disposed on the line of sight axis; a control unit (800) configured to control the drive motor (600) such that for each lens of the plurality of lenses (415, 416, 417, 418, 419, 420) the respective lens is disposed on the line of sight axis and to store an accommodation time indicating a period of time in which the eye becomes in an accommodated state to the respective lens; the control unit is configured to set a training time associated with each lens of the plurality of lenses based at least in part on a stored accommodation time for the respective lens and cause the respective lens to be disposed on the line of sight axis during the training time.
  2. The vision training device according to claim 1, wherein, in the training mode, the control unit (800) is configured to change the respective lens disposed on the line of sight axis after the respective lens is disposed on the line of sight axis for the training time for each of the plurality of lenses (415, 416, 417, 418, 419, 420).
  3. The vision training device according to claim 2, wherein the lens holder is rotatably coupled to the main body (100) by a rotation shaft, and the lenses are disposed on the lens holder at angular intervals along a circumference of the lens holder.
  4. The vision training device according to claim 2, wherein the control unit is configured to store the accommodation time for the respective lens in response to an accommodation reflex confirmation signal input to a user input unit (S130, S140).
  5. The vision training device according to claim 2, further comprising a sensor module (1100) configured to detect the accommodated state of the eye of the user, wherein the control unit is configured to store the accommodation time of the user for the respective lens in response to an accommodation reflex confirmation signal input from the sensor module (1100).
  6. The vision training device according to claim 2, wherein the plurality of lenses (415, 416, 417, 418, 419, 420) respectively have diopter values varying stepwise with a same diopter interval therebetween, and the control unit is configured to measure and store the accommodation time for the respective lens when the diopter is increased from an adjacent lens and the accommodation time when the diopter is decreased from an adjacent lens.
  7. The vision training device according to claim 2, wherein, the control unit (800) is configured to store an accommodation time according to a switching direction of the respective lens.
  8. The vision training device according to claim 2, wherein, in the training mode, the control unit (800) is configured to begin training by selecting the lens with the shortest accommodation time.
  9. The vision training device according to claim 2, wherein, in the training mode, the control unit (800) is configured to shorten the accommodation time for the respective lens based on receiving an accommodation reflex confirmation signal before the training time expires.
  10. The vision training device according to claim 2, wherein, in the training mode, the training time for each of the plurality of lenses (415, 416, 417, 418, 419, 420) is equal to or slightly longer or slightly shorter than the respective accommodation time.

Description

The present invention relates to a vision training device. Background Art A crystalline lens adjuster muscle which affects human vision is an involuntary muscle and is unable to be artificially controlled by human's will. A muscular strength of the crystalline lens adjuster muscle is known to be enhanced through vision improvement training of causing a user to repeatedly recognize an object through lenses with different diopters. For such a training, a vision training device that automatically switches a diopter of a lens placed in front of the eye in a mechanical manner is disclosed. In the vision training device of the related art mentioned above, a method of switching a diopter lens placed in front of the eye of the user at predetermined time intervals is used. KR 101580477 B1 and US 4,523,822 A are examples of the mentioned training devices. However, in the vision training device of the related art, an arbitrarily set training time is applied uniformly even though an accommodation time for a switched lens differs depending on a user. Therefore, some users feel that a lens switching time is fast, and other users feel that a lens switching time is slow, and the users have uncomfortable feeling, leading to poor training effects. Meanwhile, the accommodation time for the replaced lens indicates an accommodative facility of person vision of the user, that is, a response of a crystalline lens adjuster muscle, and a current state and a change trend thereof are important factors which should be handled with regard to vision training and performance evaluation, and they are not considered in the vision training device of the related art. Disclosure of Invention Technical Problem It is an object of the present invention to provide a vision training device capable of measuring and managing an accommodative status of person vision of a user. It is another object of the present invention to provide a vision training device capable of providing vision training in which a measured accommodative status of personal vision of a user is reflected. Solution to Problem The above objects are achieved by a vision training device including a main body including at least one ocular hole corresponding to an eye of a user, at least one lens unit including a plurality of lenses having different diopters and a lens holder that supports the lenses with an interval therebetween and is movable with respect to the main body so that any one of the lenses is placed in a line of sight direction from the ocular hole, a drive motor that moves the lens holder, a user input unit, and a control unit that controls the drive motor such that a test lens selected from the plurality of lenses is placed in the line of sight direction and stores an accommodation time indicating a period of time in which the eye becomes an accommodated state to the test lens. The lens holder may be installed rotatably on a rotation shaft with respect to the main body, and the lenses may be supported on the lens holder at a predetermined angular interval in a circumferential direction, and in this case, the lens can be switched with a relatively simple structure. The control unit may store the accommodation time of the user for the test lens on the basis of an accommodation reflex confirmation signal input through the user input unit. The vision training device may further includes a sensor module that detects the accommodated state of the eye of the user, and the control unit may store the accommodation time of the user for the test lens on the basis of an accommodation reflex confirmation signal input through the sensor module, and in this case, it is possible to measure the accommodative facility of the user vision more conveniently. The plurality of lenses may have diopter values varying stepwise with predetermined diopter intervals therebetween, and the control unit may measure and store the accommodation time when the diopter is increased from an adjacent lens and the accommodation time when the diopter is decreased from an adjacent lens for each of the lenses, and in this case, it is possible to measure the accommodative facility of the user vision in view of the lens switching direction and thus measure the accommodative facility of the user vision more accurately. In the vision training device, the user input unit may include a training mode selection part, and the control unit may set a training time of each lens in which the stored accommodation time is reflected and expose a corresponding lens to a line of sight of the user during the training time corresponding to each lens when the training mode is selected through the user input unit, and thus the vision training in which the accommodative facility of the user vision is considered can be implemented. The accommodation time of the user for the corresponding lens may be stored when the accommodation reflex confirmation signal is input through the user input unit during an operation in the training mode, an