JP7093479B2 - Eye strain recovery device, stereoscopic image generation method, stereoscopic image generation program and stereoscopic image generation device - Google Patents

Description

The present invention relates to an eye strain recovery device, a stereoscopic image generation method, a stereoscopic image generation program, and a stereoscopic image generation device.

Patent Document 1 describes an eye strain recovery promoting device capable of performing a recovery promotion of deep visual acuity and a low vision test. This visual acuity recovery promoting device has an optical system parallel to each other corresponding to the user's right eye and left eye, and is a device for promoting recovery of the user's visual acuity fatigue. A deep visual acuity training means that promotes the recovery training of the deep visual acuity of the user by using the visual acuity test means, a visual acuity test means that causes the user to observe the visual acuity test target, and is used for the static visual acuity test of the user. It has a drive control unit for switching and driving a deep visual acuity training means and a visual acuity test means based on the input instruction of.

Japanese Unexamined Patent Publication No. 2007-215691

Here, in general, when an operator keeps looking at a nearby display or an object for a long time, the crystalline lens swells greatly and becomes tense, and eye strain gradually accumulates.
An object of the present invention is to provide an eye strain recovery device, a stereoscopic image generation method, and a stereoscopic image generation program that promote recovery of eye strain by viewing an image that perceives a sense of perspective. ..
Another object of the present invention is to provide a stereoscopic image generation device capable of generating an image that makes a user perceive a sense of perspective.

The invention according to claim 1 is an eyepiece lens to be viewed by a user, a display device having one display surface for displaying an optotype visually recognized through the eyepiece lens and causing the user to perceive a sense of perspective, and the user. An eye fatigue recovery device including an image generation unit for generating a left optotype image and a right optotype image corresponding to both eyes to form the optotype, wherein the image generation unit is the same. The step of obtaining the position on the display surface corresponding to the center position of the eyepiece as the left reference position and the right reference position, respectively, and the left background image and the right with the left reference position and the right reference position as the substantial centers, respectively. The step of displaying the background image and filling the area other than the left background image and the right background image with a preset color and displaying the background image and the left reference position and the right reference position are at the same position, respectively. The total value of the step of obtaining the position PosL and the position PosR, the distance DL from the position PosL to the left display position in the right direction, and the distance DR from the position PosR to the right display position in the left direction is predetermined. The left target image and the right view for forming the target at the left display position and the right display position, respectively, in the step of obtaining the left display position and the right display position so as to be large. It is an eye fatigue recovery device that performs a step of displaying a target image and a step of displaying a target image.

According to the second aspect of the present invention, in the eye strain recovery device according to the first aspect, the size of either the distance DL or the distance DR is 0.

The invention according to claim 3 is an eyepiece lens to be viewed by a user, a display device having one display surface for displaying an optotype visually recognized through the eyepiece lens and causing the user to perceive a sense of perspective, and the user. A stereoscopic image generation method of an eye fatigue recovery device including an image generation unit for generating a left optotype image and a right optotype image for forming the optotype corresponding to both eyes, respectively. The step in which the image generation unit obtains the position on the display surface corresponding to the center position of the eyepiece lens as the left reference position and the right reference position, respectively, and the left reference position and the right reference position are substantially centered, respectively. The step of displaying the left background image and the right background image, and filling and displaying the area other than the left background image and the right background image with a preset color, and the left reference position and the right reference position as a reference. The sum of the step of obtaining the position PosL and the position PosR at the same position, the distance DL from the position PosL to the left display position in the right direction, and the distance DR from the position PosR to the right display position in the left direction. The left vision for forming the optotype at the left display position and the right display position, respectively, in the step of obtaining the left display position and the right display position so that the value has a predetermined size. It is a method of generating a stereoscopic image of an eye fatigue recovery device that executes a step of displaying a target image and the right visual target image.

The invention according to claim 4 is a stereoscopic image generation program that is displayed on one display surface of a display and allows the user to perceive a sense of perspective by visually recognizing the image through an eyepiece. A means for obtaining a position on the display surface corresponding to the center position of the eyepiece as a left reference position and a right reference position, respectively, a left background image and a right background having the left reference position and the right reference position as substantially centers, respectively. A means for displaying an image and filling and displaying an area other than the left background image and the right background image with a preset color, a position PosL at the same position with respect to the left reference position and the right reference position, respectively. And the means for obtaining the position PosR, the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. As described above, the left and right optotype images for forming the optotype are displayed at the left display position and the means for obtaining the right display position, the left display position and the right display position, respectively. It is a stereoscopic image generation program for an eyepiece fatigue recovery device for functioning as a means.

The invention according to claim 5 is an eyepiece lens to be viewed by a user, a display device having one display surface for displaying an optotype visually recognized through the eyepiece lens and causing the user to perceive a sense of perspective, and the user. The image generation unit is provided with an image generation unit for generating a left optotype image and a right optotype image for forming the optotype corresponding to both eyes, and the image generation unit corresponds to the center position of the eyepiece lens. A step of obtaining a position on the display surface as a left reference position and a right reference position, and a left background image and a right background image centered on the left reference position and the right reference position, respectively, are displayed, and the left background is displayed. A step of filling and displaying an image and an area other than the right background image with a preset color, and a step of obtaining a position PosL and a position PosR at the same position with respect to the left reference position and the right reference position, respectively. , The left display so that the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. A step of obtaining a position and the right display position, and a step of displaying the left optotype image and the right optotype image for forming the optotype at the left display position and the right display position, respectively. It is a stereoscopic image generation device to be executed.

INDUSTRIAL APPLICABILITY According to the present invention, a user can provide an eye strain recovery device, a stereoscopic image generation method, and a stereoscopic image generation program that promote recovery of eye strain by viewing an image that perceives a sense of perspective.
Further, according to the present invention, it is possible to provide a stereoscopic image generation device capable of generating an image that makes a user perceive a perspective.

It is an external view of the eye strain recovery device which concerns on one Embodiment of this invention. It is a perspective view which shows the internal structure of the optical system accommodation part provided in the same eye strain recovery device. It is a block diagram of the controller which the asthenopia recovery device has. It is a flow chart which shows the generation method of the stereoscopic image which concerns on the eye strain recovery apparatus. It is explanatory drawing of the step S1 of the method of generating the stereoscopic image which concerns on the eye strain recovery apparatus. It is explanatory drawing of the step S2 of the method of generating the stereoscopic image which concerns on the eye strain recovery apparatus. The left background image and the right background image displayed on the display surface in step S3 of the method for generating a stereoscopic image according to the asthenopia recovery device. It is an image displayed on the display surface of the liquid crystal display provided in the asthenopia recovery device. It is a stereoscopic image visually recognized by a user looking through the eyepiece provided in the asthenopia recovery device.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood. In the figure, parts not related to the description may be omitted.

As shown in FIG. 1, the eye strain recovery device 10 according to the embodiment of the present invention includes a base portion 12, a support portion 14, and an optical system storage portion 16, and a user looks into the eyepieces 162L and 162R. By visually recognizing a stereoscopic image that perceives perspective, eyestrain can be recovered.

The base portion 12 is a plate-shaped member that rests on an installation surface such as a table. An operation lever 122 and a push button 124 that move back and forth and left and right are provided on the upper surface of the base portion 12, and a signal for operation from the user is input.

The support portion 14 is a set of columns extending upward from the base portion 12 at intervals. The support portion 14 functions as a grip held by the user with both hands during the treatment of recovering asthenopia by looking through the eyepieces 162L and 162R.

The optical system storage portion 16 is supported by the support portion 14, and a space shielded from the outside is formed inside. The optical system storage unit 16 has eyepieces 162L, 162R, a liquid crystal display 164, a shielding plate 166 (see FIG. 2), and a controller 168 (see FIG. 3) in this space.
The eyepieces 162L and 162R, the liquid crystal display 164, the shielding plate 166, and the controller constitute a stereoscopic image generation device that generates a stereoscopic image.

The eyepieces 162L and 162R (see FIG. 2) are convex lenses, respectively, and correspond to those for the right eye and those for the left eye. The eyepieces 162L and 162R are fixed to the front cover 103 (see FIG. 1) via the lens holder 170. Specifically, the lens holder 170 includes an annular left holding portion 170L and a right holding portion 170R arranged at intervals, and a rod-shaped connecting member 170C that connects the right holding portion 170R and the left holding portion 170L to each other. The left holding portion 170L and the right holding portion 170R hold the outer peripheral edges of the eyepieces 162L and 162R, respectively.

A liquid crystal display (an example of a display) 164 is fixed to a frame (not shown). The liquid crystal display 164 has a display surface 165 that displays a stereoscopic image that serves as a visual target to be visually recognized by the user. The stereoscopic image displayed on the display surface 165 is, for example, an animal, a fruit, a number, and a figure.

However, this stereoscopic image is displayed as a left and right optotype images for forming stereoscopic images as optotypes on the left and right sides of the display surface 165 of the liquid crystal display 164, respectively, and is displayed as an eyepiece 162L. This is an image that allows the user to perceive a sense of perspective (a sense of depth) by being visually recognized by the left eye and the right eye via 162R. Since the stereoscopic image is set to be at infinity when viewed from the user by the action of the eyepieces 162L and 162R which are convex lenses, the user recognizes the image as a stereoscopic image at a distant position. ..
The left optotype image and the right optotype image are images of the same predetermined size.
The stereoscopic image includes not only a still image but also a moving image that is recognized three-dimensionally.

The normal direction of the display surface 165 faces diagonally upward. Specifically, the normal direction of the display surface 165 is the direction in which the optical axes AXL and AXR extending from the display surface 165 toward both eyes of the user extend.
The center position of the display surface 165 (center position CC shown in FIG. 5 described later) connects the positions where the optical axis AXL and the optical axis AX R intersect with the display surface 165 (position RL and position RR shown in FIG. 6 described later). It is arranged so as to coincide with the center of the line segment.
The liquid crystal display 164 is not limited to the liquid crystal display, and may be any size and type of display according to the required specifications.

As shown in FIG. 2, the shielding plate 166 views the display surface 165 of the liquid crystal display 164 from the front, and divides the display surface 165 into a left display area on the left side and a right display area on the right side. It is a shielding member provided in the central portion of the above, for suppressing the left visual target image from being visually recognized by the right eye and the left visual target image from being visually recognized by the left eye.
A notch 166a is formed at the end of the shielding plate 166 on the front side (user side), and the connecting member 170C of the lens holder 170 passes through the notch 166a.

The controller 168 (see FIG. 3) can control the eye strain recovery device 10. The controller 168 is located inside the back cover.
Further, the controller 168 has an image generation unit 169. The image generation unit 169 can generate the above-mentioned stereoscopic image that serves as a visual target to be visually recognized by the user and causes the user to perceive a sense of perspective.
The image generation unit 169 is realized by a computer program executed by the CPU.

As shown in FIG. 1, protrusions PL and PR for hooking a disposable forehead pad (not shown) made of paper are formed in the vicinity of the contact surface 102 where the forehead of the eye strain recovery device 10 hits.

Next, a method of generating a stereoscopic image according to the eye strain recovery device 10 will be described.
As shown in FIG. 4, the stereoscopic image is generated according to the following steps S1 to S6. However, if possible, the steps S1 to S6 may be performed in a different order or may be performed in parallel.
The number of pixels in the width direction and the number of pixels in the height direction of the display surface 165 of the liquid crystal display 164 are X (px) and Y (px), respectively, and the distance between the eyepiece lenses 162L and 162R (optical axis). The distance between AXL and the optical axis AXR) is PD (px).

(Step S1)
The image generation unit 169 specifies the center position CC (see FIG. 5) of the display surface 165 of the liquid crystal display 164.
Assuming that the lower left of the screen is the origin O, the coordinates of the center position CC (black square) are (X / 2, Y / 2).
In FIG. 5, the numerical values in parentheses are specific numerical examples when the number of pixels in the width direction and the number of pixels in the height direction of the display surface 165 are 1920 (px) and 1080 (px), respectively. Shows. FIG. 6 also shows the same specific numerical example.

Next, the image generation unit 169 divides the display surface 165 into left and right to make the left display area and the right display area, and obtains the center position CL of the left display area and the center position CR of the right display area, respectively.
The coordinates of the center position CL (black triangle) are obtained as (X / 4, Y / 2).
The coordinates of the center position CR (black triangle) are obtained as (3X / 4, Y / 2).

The image generation unit 169 is not limited to dividing the entire surface of the display surface 165 into a left display area and a right display area. The image generation unit 169 may divide a part of the display surface 165 into a left display area and a right display area. To give a specific example, the image generation unit 169 divides the upper display area excluding the display area of the lower 10% of the entire display area of the display surface 165 into a left display area and a right display area. May be good.

(Step S2)
The position where the image generation unit 169 intersects the optical axes AXL and AXR and the display surface 165, that is, the position corresponding to the center position of the eyepiece 162L on one side when viewed from the direction in which the optical axes AXL and AXR extend. The position RR (an example of the right reference position) corresponding to the center position of the RL (an example of the left reference position) and the eyepiece 162R on the other side is obtained (see FIG. 6).
The coordinates of the position RL (black circle) are obtained as (X / 2-PD / 2, Y / 2).
The coordinates of the position RR (black circle) are obtained as (X / 2 + PD / 2, Y / 2).

(Step S3)
The image generation unit 169 displays a rectangular left background image and a right background image centered on the position RL (black circle) and the position RR (black circle) at the positions indicated by the broken lines in FIG. 6, respectively. However, the center here does not mean the center in the strict sense, but the "substantial center".
The left background image and the right background image are set to a size that does not exceed the range of the left display area and the right display area, respectively.
To exemplify the sizes of the left background image and the right background image corresponding to the specific numerical example of FIG. 6, the number of pixels in the width direction and the number of pixels in the height direction are 600 (px) and 500 (px), respectively. ..

As shown in FIG. 7, the left background image and the right background image can be snow noise-like (sandstorm-like) images, respectively. In FIG. 7, the black circles representing the positions RL and RR are displayed to help understanding, and are not actually displayed.
In addition, the area other than the left background image and the right background image is filled with a preset color and displayed. This preset color is, for example, black.

(Step S4)
As shown in FIG. 6, the image generation unit 169 determines the position PosL (white square) and the position PosR (white square) at the same position when viewed from the position RL and the position RR (based on the position RL and the position RR), respectively. Ask.

(Step S5)
This step is a step in which the image generation unit 169 obtains a left display position and a right display position. This left display position is a reference position for displaying a left optotype image of a predetermined size within the range of the left background image, and the right display position is a right optotype image of a predetermined size. Is a reference position for displaying within the range of the right background image.
Specifically, the image generation unit 169 obtains a position shifted to the right by a predetermined distance DL from the position PosL (see the arrow extending to the right from the position PosL shown in FIG. 6) as the left display position. A position shifted to the left by a predetermined distance DR from the position PosR (see the arrow extending to the left from the position PosR shown in FIG. 6) is obtained as the right display position. The size of either the distance DL or the distance DR may be 0. That is, the position PosL may be set as the left display position as it is without shifting the distance DL, and the right display position in the left direction may be obtained from the position PosR, or the position PosR may be set as the right display position without shifting the distance DR and right from the position PosL. You may find the left display position in the direction.

In other words, in the image generation unit 169, the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction is a predetermined size. As described above, the left display position and the right display position are obtained. This predetermined size is at least a value greater than zero.
The larger the total value of the distance DL and the distance DR, the larger the binocular parallax, and the more the image is visually recognized as a stereoscopic image on the front side of the user. The size of the distance DL and the distance DR is, for example, several pixels to several tens of pixels.

That is, the minimum distance between the left display position and the right display position in the left-right direction is the distance at which the preset binocular parallax occurs, and the maximum distance is the distance between the position RL and the position RR. Should be a short distance. In addition, the left display position serves as a reference position for displaying the left target image without protruding from the left background image, and the right display position displays the right target image without protruding from the right background image. The method of obtaining the left display position and the right display position is not limited to the method described in this step as long as the reference position is used.
Further, a slight deviation in the height direction between the left display position and the right display position is allowed, and it is sufficient that the left display position and the right display position are separated at least in the left-right direction.

(Step S6)
The image generation unit 169 displays a left optotype image and a right optotype image for forming an optotype at the left display position and the right display position obtained in the previous step, respectively.
As a result, the left optotype image and the right optotype image are displayed on the front side and within the range of the left background image and the right background image, respectively.
As described above, the optotype formed by the left optotype image and the right optotype image is visually recognized as a stereoscopic image having a sense of perspective (a sense of depth) according to the magnitude of the total value of the distance DL and the distance DR. To.

Further, the image generation unit 169 repeats the display and non-display of all the images including the background at a predetermined cycle.
As a result, the ciliary body that adjusts the thickness of the user's crystalline lens expands and contracts, the focus adjustment function of the eye is refreshed, and recovery from eye strain is promoted.

It is also possible to display a plurality of optotypes. When displaying a plurality of optotypes, for example, as shown in FIG. 8A, for the butterfly, the dog, and the fish, the position PosL and the position PosR are obtained according to the above-mentioned step S4, respectively, and the left display position and the right display position are obtained according to the step S5. Is obtained, and the corresponding left and right target images are displayed at the left display position and the right display position obtained according to step S6.
In FIG. 8A, the distance DL and the distance DR for the dog are set to 20 px each, the distance DL and the distance DR for the butterfly are 10 px each, and the distance DL and the distance DR for the fish are set to 5 px each. Then, in FIG. 8B, the dog, the butterfly, and the fish are visually recognized with a sense of perspective (a sense of depth) so as to be positioned in order from the front to the distance.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions that do not deviate from the gist are within the scope of the present invention.
The liquid crystal display 164 and the controller included in the eye strain recovery device 10 may be realized by a mobile device owned by the user. This mobile device is provided inside the optical system storage unit 16 so as to be easily attached and detached, and an application (application software) that functions as a stereoscopic image generation program is installed and used to realize the image generation unit 169. Will be done.

Further, the method and program for generating a stereoscopic image is not limited to being applied to an eye strain recovery device. The stereoscopic image generation method and the stereoscopic image generation program may be applied to, for example, an amusement device or a home-use game machine.

10 Eye strain recovery device 12 Base 14 Support 16 Optical system storage 102 Contact surface 103 Front cover 104 Back cover 122 Operation lever 124 Push button 162L, 162R Eyepiece 164 Liquid crystal display 165 Display surface 166 Shielding plate 166a Notch 168 Controller 169 Image generator 170 Lens holder 170C Connection member 170L Left holding part 170R Right holding part AXL, AXR Optical axis PL, PR protrusion

Claims (5)

An eyepiece that the user looks into, a display that has one display surface that displays an optotype that is visually recognized through the eyepiece and causes the user to perceive perspective, and the optotype corresponding to both eyes of the user. An eyepiece fatigue recovery device comprising an image generation unit for generating a left-eyepiece image and a right-eyepiece image for forming an eyepiece.
A step in which the image generation unit obtains a position on the display surface corresponding to the center position of the eyepiece as a left reference position and a right reference position, respectively.
A left background image and a right background image centered on the left reference position and the right reference position, respectively, are displayed, and areas other than the left background image and the right background image are filled with a preset color. Steps to display and
A step of obtaining the position PosL and the position PosR at the same position with respect to the left reference position and the right reference position, respectively.
The left display position so that the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. And the step to obtain the right display position,
An eye strain recovery device that executes a step of displaying the left optotype image and the right optotype image for forming the optotype at the left display position and the right display position, respectively. In the eye strain recovery device according to claim 1,
An eye strain recovery device in which the size of either the distance DL or the distance DR is 0. An eyepiece that the user looks into, a display that has one display surface that displays an image that is visually recognized through the eyepiece and causes the user to perceive perspective, and the optotype corresponding to both eyes of the user. It is a stereoscopic image generation method of an eyepiece fatigue recovery device including an image generation unit for generating a left-eyepiece image and a right-eyepiece image for forming an eyepiece.
A step in which the image generation unit obtains a position on the display surface corresponding to the center position of the eyepiece as a left reference position and a right reference position, respectively.
A left background image and a right background image centered on the left reference position and the right reference position, respectively, are displayed, and areas other than the left background image and the right background image are filled with a preset color. Steps to display and
A step of obtaining the position PosL and the position PosR at the same position with respect to the left reference position and the right reference position, respectively.
The left display position so that the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. And the step to obtain the right display position,
A stereoscopic image of an eye strain recovery device that executes a step of displaying the left optotype image and the right optotype image for forming the optotype at the left display position and the right display position, respectively. Generation method. It is a stereoscopic image generation program that is displayed on one display surface of the display and allows the user to perceive a sense of perspective by visually recognizing it through an eyepiece.
Computer,
A means for obtaining a position on the display surface corresponding to the center position of the eyepiece as a left reference position and a right reference position, respectively.
A left background image and a right background image centered on the left reference position and the right reference position, respectively, are displayed, and areas other than the left background image and the right background image are filled with a preset color. Means of display,
A means for obtaining a position PosL and a position PosR at the same position with respect to the left reference position and the right reference position, respectively.
The left display position so that the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. And the means for obtaining the right display position,
Stereoscopic vision for an eye strain recovery device to function as a means for displaying a left and right optotype images for forming the optotype at the left display position and the right display position, respectively. Image generator. The eyepieces that the user looks into and
A display having one display surface for displaying an optotype that is visually recognized through the eyepiece and causes the user to perceive a sense of perspective.
It is provided with an image generation unit that generates a left optotype image and a right optotype image for forming the optotype corresponding to both eyes of the user, respectively.
A step in which the image generation unit obtains a position on the display surface corresponding to the center position of the eyepiece as a left reference position and a right reference position, respectively.
A left background image and a right background image centered on the left reference position and the right reference position, respectively, are displayed, and areas other than the left background image and the right background image are filled with a preset color. Steps to display and
A step of obtaining the position PosL and the position PosR at the same position with respect to the left reference position and the right reference position, respectively.
The left display position so that the total value of the distance DL from the position PosL to the left display position in the right direction and the distance DR from the position PosR to the right display position in the left direction has a predetermined size. And the step to obtain the right display position,
A stereoscopic image generation device that executes a step of displaying the left optotype image and the right optotype image for forming the optotype at the left display position and the right display position, respectively.

Images