JP3893760B2 - Glasses field of view experience apparatus, glasses field of view experience method, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for displaying a field-of-view image when viewed with glasses, and in particular, a field-of-view experience apparatus for glasses, a method for experiencing the field of vision of glasses, and a recording capable of experiencing the shaking felt when moving a face with glasses on. It relates to the medium.
[0002]
[Prior art]
When purchasing spectacles, the user selects a spectacle lens and a spectacle frame, and a combination of these is delivered. When selecting a spectacle lens, wear a lens prepared as a sample at the spectacle store, check the appearance, and select the one that seems suitable for you while listening to the explanation of the store clerk. Then, spectacles with the selected spectacle lens mounted on a separately selected spectacle frame are made and delivered to the user.
[0003]
Conventionally, it is common for a user to purchase a lens after actually wearing a lens that seems to be suitable for him / her.
[0004]
[Problems to be solved by the invention]
However, it is not possible to see how the field of view looks when wearing spectacles with lenses mounted on the frame until the spectacles actually delivered are put on. There are only a limited number of spectacle lenses available in the store as samples, and lenses that are not available as samples, or lenses that are intermediate in nature as samples are suitable for users. If you decide that you have the eyeglasses, you won't actually know the characteristics of the glasses until you wear the glasses that you actually delivered.
[0005]
In particular, a progressive part with a distance part suitable for viewing an object at a long distance, a near part suitable for viewing an object at a close distance, and an intermediate part where the refractive power gradually changes therebetween. When a multifocal lens is selected, the nature of the progressive surface varies depending on the distance and near powers, and whether the distance or near focus is important. For this reason, the number of progressive multifocal lenses is enormous, and it is not possible to determine how the field of view of a lens suitable for the user looks just by applying a small number of samples prepared in the store.
[0006]
In addition, it is difficult for a clerk at a spectacle store to explain the state of the field of view in words to a user who has never actually used a progressive lens. Furthermore, prescriptions for spectacle lenses include spherical power, astigmatism power, astigmatism axis direction, and progressive lens addition, etc. If these are different, the appearance changes variously. For this reason, it is impossible to grasp all aspects of the field of view only by explanation of the sample and the store clerk.
[0007]
In particular, in the progressive multifocal lens, the magnification of the image differs because the power of the lens differs by the addition power in the distance portion and the near portion. As a result of connecting them smoothly in the middle, distortion occurs. As a result, the object appears to be distorted, and there is a problem that the user feels shaking when the head is moved. It is impossible to explain this shaking in words.
[0008]
The present invention has been made in view of the above circumstances, and grasps in advance how to use a spectacle lens having different characteristics for each distance, such as a progressive multifocal lens, and provides a spectacle lens suitable for oneself. In order to be able to select and obtain a comfortable field of view, it is possible to display a field of view image when wearing glasses, especially a field of view image that can experience shaking when moving the head An object is to provide a visual field experience device.
[0009]
Another object of the present invention is to provide a visual field experience method for eyeglasses that can display a visual field image when viewing with glasses, particularly a visual field image that can experience shaking when the head is moved. And
[0010]
A further object of the present invention is to provide a computer-readable recording medium in which a program capable of causing a computer to realize such a visual field experience method is recorded.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a lens for moving images that can be seen when a user shakes his / her face, in order to allow the user to experience the shaking that occurs when the user shakes his / her face caused by lens distortion. This distortion is added.
[0012]
In other words, such a shake cannot be fully understood by just showing a still image to the user, but it is a moving image and an image with distortion of the lens added to the user. It has become possible to experience the shaking characteristic of the focus lens.
[0013]
In this case, if you detect the movement of the user's head and use the image of the visual field change that accompanies the movement of the head, the user can shake the head and experience shaking, so the shaking becomes more realistic. You can experience it in a close state.
[0014]
Therefore, the eyeglass field experience device according to claim 1 changes the angle of the face with the progressive multifocal lens in the eyeglass field experience device capable of displaying a field image when viewed with the progressive multifocal lens. And an image processing unit that creates the field image by performing a process of adding distortion of the progressive multifocal lens to the image data that changes in accordance with the change in the field of view direction.
[0016]
3. The eyeglass field of view experience method according to claim 2, wherein the eyeglass field of view experience method is capable of displaying a field image when viewed with a progressive multifocal lens when the angle of the face with the progressive multifocal lens is changed. The field image is created and displayed by performing a process of adding distortion aberration of the progressive multifocal lens to image data that changes with the change in the field direction.
[0018]
The recording medium according to claim 3 performs a process of adding the distortion aberration of the progressive multifocal lens to image data that changes in accordance with a change in the viewing direction when the angle of the face on which the progressive multifocal lens is applied is changed. Thus, the computer-readable recording medium stores a program for causing a computer to realize the visual field experience method of displaying glasses after the visual field image is created.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, although embodiment of this invention is described, this invention is not limited to the following embodiment.
[0021]
FIG. 1 shows an example of the device configuration of the eyeglass field experience device of the present invention. The visual field experience device 1 according to the present invention is configured with a personal computer (personal computer) 10 as a center, and a CRT 21 and a head mounted display (HMD) 22 are prepared as image display devices capable of displaying a visual field image. A keyboard 23 is prepared as an information input device, and a CCD camera 24 is prepared as an image input device. Further, as a storage device capable of storing images or other information, a hard disk 25 and a CD-ROM drive 26 are prepared so that image information or programs stored in a compact disk (CD) 27 can be used. It has become.
[0022]
In addition, a head motion sensor 28 that detects the movement of the head is provided as an information input means attached to the head mount display 22.
[0023]
Furthermore, the personal computer 10 of this example can be connected to a network such as the Internet, and can exchange image information or information such as software via the network.
[0024]
In FIG. 2, the block diagram of a function structure of the visual field experience apparatus 1 of this invention is shown. The personal computer 10 that is the core of the visual field experience device 1 first receives a command for operating the visual field experience device 1 from the keyboard 23, and a selection input unit 11 that can accept selection commands such as the type of glasses and the type of image, An image input unit 12 capable of inputting image data of an object to be displayed from the CCD camera 24, and an image that can be selected and generated according to the input data and output by selecting or generating a visual field image corresponding to the distance to the object A processing unit 13 is provided. In addition, a storage unit 14 is provided which can store software such as a program for viewing eyeglasses, image information, and a viewable image which can be selected and displayed. The contents are stored in the CD-ROM 27 or the communication function 15. You can update from time to time via a network such as the Internet. The visual field image data generated or selected by the image processing unit 13 is output from the display output unit 16 to the CRT 21 or the HMD 22 and displayed.
[0025]
Further, a signal detected by the head motion sensor 28 that detects the movement of the user's head is output to an interface (not shown), and an analog signal is converted into a digital signal by the interface, and converted into information on the moving direction and moving speed of the head. The information is output to the image processing unit 13. In the image processing unit, a moving image of the visual field image is created and processed according to the change in the visual field direction corresponding to the movement of the user's head, and the head mounted display 22 responds to the movement of the head via the display output unit 16. Display the field of view image. In this case, it is possible to experience a stereoscopic image by displaying images taken by the left and right lenses of the stereoscopic camera on the left and right eyes on the head mounted display 22, respectively.
[0026]
Each of these functions can be realized by the personal computer 10 as in this example, but a browser is started on the personal computer 10 and a connection is established with a WWW server at a predetermined address via the Internet, and the equivalent functions are performed by the personal computer. 10 can be provided, and a suitable visual field image desired by the user can be obtained from a wide variety of visual field images from the WWW server.
[0027]
As for image processing, image information may be sent to a host computer via a network and processed by the host computer, and the processed image may be received and displayed by the personal computer 10 via the network.
[0028]
The personal computer 10 is installed in a hard disk 25 or the like from a recording medium such as a CD-ROM 27 or a floppy disk in which a program for experiencing eyeglasses visual field is recorded, and the program installed in the storage unit 14 is read, whereby an eyeglass visual field experience device. Can function as.
[0029]
FIG. 3 shows a schematic flowchart of a process for displaying a field-of-view image in the eyeglass field-of-view device 1 of the present invention. In advance, the user wears the head mount display 22 and the head motion sensor 28 is set at the apex position of the head.
[0030]
First, in step 51, the type of lens for which a field image is to be displayed is selected and input from the input device 23.
[0031]
Next, in step 52, an image to be displayed is selected. For example, the image is selected from an image output from the CCD camera 24, an image stored in advance in the storage unit 14 and the hard disk 25, or an image acquired via a network.
[0032]
In the progressive multifocal lens, it is selected whether to use the distance portion, the intermediate portion, or the near portion. The progressive multifocal lens has different magnifications in the distance portion, the intermediate portion, and the near portion, so that the appearance is different. Therefore, which part to use is an important factor. When the far-distance part is selected, for example, an image of a landscape that appears far away, for example, when the middle part is selected, for example, an image of a table that appears in the foreground, and when the near-distance part is selected, an image of a book in front of the eye is selected.
[0033]
In step 53, the image processing unit 13 uses the image data prepared on the recording medium such as the hard disk 25 or the CD-ROM 27, or the original image data selected by the program, the distortion aberration of the selected lens, blurring, etc. A still image processed based on the characteristics of is created.
[0034]
Next, in step 54, the visual field image data output from the image processing unit 13 is displayed on the HMD 22 via the display output unit 16, and the user is allowed to recognize a still image. Thereby, the user can know how the lens looks.
[0035]
Next, in step 54, the user is allowed to move his / her head freely in the left / right direction or the up / down direction. The head motion sensor 28 senses the movement of the user's head and outputs the signal to the interface. The interface detects the direction and speed of the movement, converts analog data into digital data, and outputs the digital data to the image processing unit 13. .
[0036]
Next, when there is an input of such a head movement, the process returns to step 53, and the image processing unit 13 counts, for example, from several frames per second to an image corresponding to the change in the visual field direction due to the head movement. Ten frames are generated, and processing for adding lens distortion and the like to the image is performed. In step 54, an image corresponding to head movement is displayed on the HMD 22 via the display output unit 16.
[0037]
After the user experiences shaking, if another lens or other image is desired, the process returns from the next step 56 to step 51 to select a lens, select an image, etc., and repeat the above processing. If the user does not want any more images, the process ends.
[0038]
FIG. 4 schematically shows distortion aberration of the progressive multifocal lens. Due to this distortion, the progressive multifocal lens has a problem that the object appears to be distorted, and as a result, when the head is moved, shaking is felt due to a change in the viewing direction. The shaking you feel when you move your head is difficult to see in still images. Therefore, in the present invention, the image processing unit 13 performs a process of adding lens distortion to a moving image showing a change in the visual field corresponding to the movement of the head sensed by the head motion sensor 28 to generate a moving distortion image. It is displayed and simulated as if to shake the face as if wearing a progressive multifocal lens.
[0039]
In this flowchart, the head is moved after first recognizing a still image, but an image with the head moved from the beginning may be displayed.
[0040]
The visual field experience device for eyeglasses of the present embodiment displays the distortion image of the movement of the visual field change corresponding to the movement of the head by displaying the shaking felt when moving the head resulting from the distortion aberration unique to the progressive multifocal lens, Users can have a simulated experience. In other words, when the user actually swings his head slowly left and right, suddenly swings left and right, a moving screen with distortion seen through the lens, or distortion seen through the lens when shaking his head vertically You can experience a moving screen with a touch, and you can experience the shaking you feel when you actually move your head.
[0041]
Therefore, the user can order the lens after fully understanding and understanding the characteristics of the progressive focus lens. In addition, depending on the design of the lens, the state of shaking varies, and the user can select his / her optimal lens by trying various lenses through simulated experience, so the user can select a spectacle lens that satisfies the user. it can.
[0042]
In addition, it is possible to save the trouble of explaining the characteristics of the progressive multifocal lens, which is difficult for the user who provides spectacles to understand. Furthermore, since the user can experience the pseudo-experience and know the characteristics of the lens and select a satisfactory lens, it is expected that the number of claims after purchasing the lens will decrease, and the cost for processing the claims will be reduced. The In addition, if a computer or terminal that can configure a simulated experience system is installed in the spectacle store, it is not necessary to prepare a huge amount of lens samples in the store, so it is possible to reduce the store space and reduce the cost. Can be reduced.
[0043]
In the above embodiment, the visual field image accompanying the head movement is created by detecting the head movement with the head motion sensor. However, the head movement can be input with, for example, a joystick, a normal mouse, or a keyboard. Alternatively, without inputting the movement of the head, it is also possible to prepare a moving image with distortion that can be seen through the glasses when the head is moved in advance, and simply show this to the user. In addition, the image display method is the head-mounted display in the above embodiment, but a normal display may be used as a matter of course.
[0044]
【The invention's effect】
As described above, the eyeglass field experience device and the eyeglass field experience method according to the present invention display the field image when the eyeglass is viewed without wearing the eyeglass lens. By having a simulated experience of the characteristics of distortion, the user can understand the shaking that is felt when the head is moved, and after the user is convinced, the user can select the most suitable eyeglass lens. Therefore, it is very useful for users, dealers, and lens manufacturers.
[0045]
Moreover, the recording medium of the present invention can cause a computer to realize such a visual field experience method.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of hardware of a visual field experience apparatus for eyeglasses according to the present invention.
FIG. 2 is a block diagram showing a functional configuration of the eyeglass visual field experience device of the present invention.
FIG. 3 is a flowchart showing an image display process of the eyeglass field experience device of the present invention.
FIG. 4 is a conceptual diagram schematically showing distortion aberration of a progressive multifocal lens.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Eyeglass visual field experience apparatus 10 Personal computer 11 Selection input part 12 Image input part 13 Image processing part 14 Storage part 15 Communication function 16 Display output part 21 CRT
22 Head Mounted Display 23 Keyboard 24 Camera 25 Hard Disk Drive 26 CD-ROM Drive 27 Compact Disk 28 Head Motion Sensor

Claims (3)

In the eyeglass field experience device that can display the field image when viewed with a progressive multifocal lens,
The visual field image is created by performing a process of adding distortion aberration of the progressive multifocal lens to image data that changes with a change in visual field direction when the angle of the face on which the progressive multifocal lens is applied is changed. An eyeglass visual field experience device comprising an image processing unit. In the visual field experience method of glasses that can display the visual field image when viewed with a progressive multifocal lens,
After creating the field image by performing a process of adding distortion aberration of the progressive multifocal lens to image data that changes with a change in the field direction when the angle of the face on which the progressive multifocal lens is applied is changed A method for experiencing the visual field of glasses, characterized by displaying.   After creating the field image by performing a process of adding distortion aberration of the progressive multifocal lens to image data that changes with a change in the field of view when the angle of the face on which the progressive multifocal lens is applied is changed The computer-readable recording medium which recorded the program which makes a computer implement | achieve the visual field experience method of the glasses to display.

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