JP2011013373A - Device and method for experiencing vision simulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily reproduce average manner of viewing at one's age, by only setting the age that a user desires to have a simulated experience thereof, and to readily perform product design that takes universal design into consideration.SOLUTION: A device for experiencing vision simulation for having the simulated experience of visual conditions includes a filter which is arranged between an observer and a viewing object and which causes light to be irregularly reflected at least either on the surface or in the middle of passage; an age entering section for inputting the age that the viewer desires to have the simulated experience thereof; and a distance calculating section for calculating, on the basis of the input age, the distance between the viewing object and the filter.

Description

  The present invention relates to a visual simulation experience apparatus and a visual simulation experience method.

When aiming at universal design such as appliances and spaces, it is necessary to incorporate the evaluation from the design design stage of appliances, etc., considering the way that visually impaired and elderly people see. For this reason, various simulators have been developed.
For example, there are a method of setting an optical filter in goggles and a method of using image processing by a computer (see, for example, Patent Document 1, Non-Patent Documents 1 and 2).
However, the former has a problem that the filter in the goggles becomes cloudy due to the sweat of the observer, or the stability of the goggles for each production lot cannot be secured. On the other hand, in the latter case, it is difficult to adjust various elements such as the lighting environment to the actual scene due to restrictions on the monitor screen or the like, and even if it is possible, machine power is required and it is difficult to reduce the cost. there were. Furthermore, since an image is presented on the monitor screen, calibration such as gamma correction of the monitor screen needs to be strictly performed, and there is a problem that the system becomes expensive due to such equipment.

On the other hand, in recent years, low vision simulators using ground glass have attracted attention (for example, see Non-Patent Document 3). In such a low visual acuity simulator, the low visual acuity can be continuously changed by changing the distance between the target to be evaluated and the ground glass.
The outline of the principle of the low vision simulator will be described below.

FIG. 8 is a diagram illustrating an outline for simulating low visual acuity.
In FIG. 8A, the image is reflected on the observer (human body) 10, the target 11 seen by the observer 10, the filter 12 installed between the observer 10 and the target 11, and the retina of the observer 10. The retinal images 13a, 13b, and 13c thus displayed are schematically displayed. FIG. 8B shows the relationship between visual acuity and the distance between the target 11 and the filter 12 (hereinafter, filter distance D _tf ).
As the target 11, for example, a Landolt ring image ("C" character) is drawn. The filter 12 is a ground glass plate for creating a low visual acuity state. This filter 12 has the property of irregularly reflecting light on the surface and in the course of passing. A filter 12 interposed between the observer 10 and the target 11 can create a “blur” of the image.

In this outline, the spatial filter characteristic can be changed by changing the filter distance D _tf . The longer the filter distance D _tf , the higher the spatial frequency information is attenuated. That is, the filter 12 functions as a continuously variable blur (blurring) filter that continuously varies the spatial frequency information.
First, in the case of (1) in FIG. 8A, the filter distance D _tf is the shortest. In this case, even if the filter 12 is interposed between the observer 10 and the target 11, the observer 10 can clearly see the target 11 through the filter 12. Next, when the filter distance D _tf is longer than (1) as in the case of (2), the target 11 appears slightly more blurred than that of (1) to the observer 10. Then, as in the case of (3), when the filter distance D _tf is the longest, the target 11 looks more blurred to the observer 10.

Thus, the longer the filter distance D _tf is, the more difficult it is to transmit high spatial frequency information to the observer 10. Therefore, the longer the filter distance D _tf , the more the observer 10 can obtain information on the low spatial frequency, and the so-called “clearness” of the target 11 decreases. Thereby, the observer 10 can experience a low visual acuity state in a simulated manner.
FIG. 8B shows the relationship between the filter distance D _tf and the visual acuity. The horizontal axis in FIG. 8B is visual acuity, and the vertical axis is the filter distance D _tf (unit: centimeter (cm)). FIG. 8B shows actual measurement values by a plurality of persons (for example, 12 persons). The horizontal and vertical axes in FIG. 8B are logarithmic displays. Moreover, the distance between the observer 10 and the target 11 is 90 cm, for example.
As shown in FIG. 8B, the visual acuity is 1.0 or more when the filter distance D _tf is 1.0 cm or less. However, it can be seen that the visual acuity gradually decreases as the filter distance D _tf increases.

Using these least squares methods to determine the relational expression between the filter distance D _tf and the visual acuity Y,
Filter distance D _tf = 1.807 × Visual acuity Y ^−1.0884 (R ² value: 0.993) (Expression 1)
For example, if the observer 10 wants to have a simulated experience with a visual acuity of 0.1, the filter distance D _tf should be about 24 cm and the target 11 should be viewed through the filter 12.
A low visual acuity simulation is performed by such a method.

Japanese Patent Laid-Open No. 11-119638

Yasushi Nakano, “Necessity of Low Vision Simulation”, Visual Information Processing Handbook, Asakura Shoten, p.560 (2000) Kunihiko Hirano, “Pseudo generation of occlusion foil transmission image”, Grant-in-Aid for Scientific Research, Ministry of Education (Project No. 07301010), Research Report, p.1-9 (1998) Norio Ideguchi, Yasushi Nakano, Kiyohiko Nunokawa, "Development of a low vision simulator using ground glass", Human Interface Society Research Report, 6 (6), p.1-8 (2004)

  However, the visual acuity must be preset in the conventional low visual acuity simulator. In addition, it has been difficult to set a user's visual acuity assumed when designing a universal design of a product. On the other hand, the assumed age group of the user is set in advance at the time of product development. The present invention provides a visual pseudo-experience device that can easily reproduce the average appearance at that age by simply setting the age at which the user wants to experience the pseudo-experience without presetting visual acuity.

A first invention is a visual simulation experience device for simulated experience of a visual state, which is disposed between an observer and an object, and a filter that irregularly reflects light on the surface and / or on the way of passing, An age input unit that inputs an age that the observer wants to experience, and a filter distance calculation unit that calculates a filter distance between the object and the filter based on the input age. This is a visual simulation experience device.
According to the present invention, the distance of the filter with respect to the object is determined from the input age, and the average appearance at that age can be reproduced only by a simple operation of inputting the age.

A second invention further includes a visual acuity calculation unit that determines visual acuity based on an age that the observer wants to experience in the first invention, wherein the filter distance calculation unit is the visual acuity determined by the visual acuity calculation unit. Based on the above, the filter distance is calculated.
According to the present invention, the average visual acuity at the age is calculated based on the input age, and the distance between the object and the filter is further calculated from the calculated average visual acuity. As a result, the average appearance at that age can be reproduced with a simple operation of inputting the age.

A third invention further comprises a work distance input unit for inputting a work distance between the observer and the object in the second invention, wherein the filter distance calculation unit is configured to input the work distance, The filter distance is determined based on the visual acuity determined by the visual acuity calculation unit according to the age.
A so-called presbyopia phenomenon occurs in which the difference between near vision and far vision increases with age. In the present invention, not only the age but also the presbyopia characteristic caused by the distance between the observer and the object can be taken into consideration, so that the average appearance at a certain age can be reproduced.

The fourth invention is the third invention, further comprising a result notifying unit for notifying the observer of information, wherein the filter distance calculating unit is a point at which the working distance is an age at which the observer wants to experience pseudo When it is larger than the limit, the filter distance is determined based on the input work distance and the visual acuity determined by the visual acuity calculation unit according to the age, and the result notifying unit determines that the work distance is The filter distance calculation unit notifies the observer that the filter distance is not determined when the near point limit is not exceeded.
A human eye has a limit value of distance at which an object can be clearly seen, that is, a near point limit. This near limit also increases with age, that is, it tends to be difficult to see farther away objects. According to the present invention, it is possible not only to reproduce different appearances in near vision and far vision by simply entering the age and observation distance, but also to add the features of presbyopia to anyone without medical expertise. It is possible to reproduce the average appearance at a certain age, taking into account the limit of near points with age.

A fifth invention further comprises a correction condition input unit for inputting that the observer is in the naked eye state or the correction state in the fourth invention, wherein the filter distance calculation unit is configured to input the work distance, The filter distance is determined based on the visual acuity determined by the visual acuity calculation unit according to age and correction conditions.
According to the present invention, by selecting a correction or non-correction between a product that is frequently viewed in the naked eye state and a product that is frequently viewed in the correction state, an object at a certain age according to the use of the product. The average appearance can be reproduced.

According to a sixth aspect, in the fourth aspect, the apparatus further includes a measurement unit that measures the work distance or the filter distance, and the filter distance calculation unit is responsive to the work distance and the age measured by the measurement unit. The filter distance is determined based on the visual acuity determined in this way, and the filter distance can be measured by the measurement unit.
According to the present invention, the distance between the observer and the object or the distance between the object and the filter can be easily measured by the measuring unit.

According to a seventh aspect, in the sixth aspect, the filter and the measurement unit are integrated.
According to the present invention, since the measurement unit and the filter are integrated, the operability of the visual simulation experience apparatus is improved.

An eighth invention is a visual simulation experience method for virtual experience of vision, the step of inputting an age at which the observer wants to experience the simulation into an age input unit, and a filter distance based on the input age And a step of determining a filter distance between the object and the filter.
In such an invention, the distance of the filter with respect to the object is determined from the input age, and the average appearance at the age at which the observer has a simulated experience is determined from the distance between the determined object and the filter. It can be reproduced.

  According to the present invention, it is possible to simply reproduce the average appearance at that age simply by setting the age at which the user wants to experience it without setting the visual acuity in advance. It can be easily performed.

It is a block block diagram of a visual simulation experience apparatus. It is a figure explaining the relationship between age and near vision. It is a figure explaining the relationship between age and distance vision. It is a figure explaining the relationship between age and a near limit. It is a flowchart figure explaining the flow of a visual simulation experience. It is a block block diagram of a visual simulation experience apparatus. It is a schematic diagram of a visual simulation experience apparatus. It is a figure explaining the outline | summary which simulates low visual acuity.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The visual simulation experience apparatus 1 according to the present embodiment will be described.
FIG. 1 is a block diagram of the visual simulation experience apparatus.
The visual simulation experience apparatus 1 includes a filter 12, a control unit 20 that controls the position of the filter 12, and a control device 40 that controls the control units 20 and 30.

  As the target 11, for example, a Landolt ring image ("C" character) is drawn. The filter 12 is a ground glass (non-reflective glass) plate for creating a low visual acuity state. This filter 12 has the property of irregularly reflecting light at least either on the surface or during passage. A filter 12 interposed between the observer 10 and the target 11 can create a “blur” of the image.

  The filter 12 and the target 11 can be arranged substantially in parallel or can be arranged obliquely. For example, in FIG. 1, the filter 12 and the target 11 are arranged substantially in parallel, but the angle of the target 11 with respect to the filter 12 may be freely changed in accordance with an assumed usage state.

In addition to the functions described above, the control device 40 determines the visual acuity, the filter distance D _tf , the work distance D _ht , which will be described later, and the like from the age at which the observer 10 wants to experience a pseudo experience, and notifies the observer 10 of the determined results. It has a means to do. More specifically, the control device 40 includes a calculation unit 41 that performs reading, determination, and calculation of input or stored data, a storage unit 42 that stores data and relational expressions, a filter distance D _tf and a working distance. A distance measuring unit 43 that measures D _ht, and a result notifying unit 44 that notifies the observer 10 of the result of the calculation unit 41.

  Here, the calculation unit 41 includes, for example, a distance input unit 41a, an age input unit 41b, a distance calculation unit 41c, a visual acuity calculation unit 41d, a correction condition input unit 41e, and a near point limit calculation unit 41f. These functions will be described together with a visual simulation experience flowchart described later. An example of the control device 40 is a computer. In response to an instruction from the control device 40, the control unit 20 controls the position of the filter 12, and the control unit 30 controls the image and position of the target 11. The target 11 may be an actual product such as a remote controller for operation or a display panel. If the position control of the filter 12 is performed by a stepping motor or the like, more accurate positioning is preferable.

Next, basic data incorporated in the storage unit 42 of the visual simulation experience apparatus 1 will be described.
FIG. 2 is a diagram illustrating the relationship between age and near vision. In FIG. 2, the horizontal axis indicates age, and the vertical axis indicates near vision. FIG. 2A shows the near vision in the naked eye state, and FIG. 2B shows the near vision in the corrected state. The working distance D _ht is, for example, 30 cm.

As shown in FIG. 2A, the near vision in the naked eye state decreases as the age increases. For example, the near vision is 0.6 or more in the 40s, but the near vision decreases to around 0.4 in the 60s.
Using the least square method based on these data, when calculating the relational expression between the age X in the naked eye state and the near vision Y1,
Near vision Y1 = −0.0235 × age X + 1.9081 (R ² value: 0.890) (Expression 2)
Get.
In addition, as shown in FIG. 2B, near vision is improved in a corrected state in which spectacles or a contact lens is worn as compared with FIG. For example, near vision is recovered to 1.0 or more in the 40s, and near vision is restored to 0.8 or more in the 60s.

Based on these data, using the least square method, when calculating the relational expression between the age X in the corrected state and the near vision Y2,
Near vision Y2 = −0.0096 × age X + 1.2223 (R ² value: 0.860) (Equation 3)
Get.
Next, FIG. 3 is a diagram for explaining the relationship between age and distance vision. In FIG. 3, the horizontal axis indicates age, and the vertical axis indicates distance vision. FIG. 3A shows the distance vision in the naked eye state, and FIG. 3B shows the distance vision in the corrected state. The working distance _Dht is, for example, 5 m.

As shown in FIG. 3A, the distance vision in the naked eye state decreases as the age increases. For example, the distance vision is 0.7 or more in the 40s, but the distance vision decreases to around 0.6 in the 60s.
Using the least square method based on these data, when calculating the relational expression between the age X in the naked eye state and the distance vision Y3,
Distance vision Y3 = −0.0114 × age X + 1.7528 (R ² value: 0.900) (Expression 4)
Get.
Further, as shown in FIG. 3 (b), the distance vision is improved in the corrected state with the eyeglasses and the contact lens attached as compared with FIG. 3 (a). For example, the distance vision recovers to near 1.2 in the 40s and the distance vision of 0.9 or more is recovered even in the 60s.

Based on these data, using the least squares method, when calculating the relational expression between the age X in the corrected state and the distance vision Y4,
Distance vision Y4 = −0.0129 × age X + 1.8131 (R ² value: 0.910) (Formula 5)
Get.
When calculating (Expression 2) to (Expression 5), data from 42 years old to 78 years old is adopted as the age range in order to improve the accuracy. In addition, the data of the ages (Figures 2 and 3) for deriving these (Expression 2) to (Expression 5) are, for example, Gittings & Fozard data (Gittings, NS & Fozard, JL “Age related changes in visual acuity.Experimental Gerontology” , 21, 423-433.1986).

It should be noted that the “visual acuity” in the present embodiment refers to the average visual acuity of the human body at an age at which the observer 10 can experience a pseudo experience. It is assumed that the observer 10 itself has normal vision (for example, 1.0 or more) with the naked eye or correction. That is, according to the present embodiment, the observer 10 can experience the average appearance at a certain age.
Moreover, the working distance D _ht (90 cm) described above is an example. In the present embodiment, even if the working distance D _ht is changed, the filter distance D _tf and the visual acuity Y are obtained by actually measuring the relationship between the filter distance D _tf and the visual acuity Y and obtaining (Equation 1) described above. Are associated. The data shown in FIG. 8B and (Equation 1) are also incorporated in the storage unit 42 of the visual simulation experience apparatus 1 of the present embodiment.

  By the way, when FIG. 2 and FIG. 3 are compared, it turns out that near vision is inferior, so that an age becomes high. This is due to the fact that the nearer the focal point on the retina becomes blurred and the deterioration of the cell of the retina itself occurs as the age increases. Therefore, in order to reproduce the low visual acuity state more accurately in consideration of presbyopia, it is important to perform a simulation in consideration of the working distance, that is, distance or near vision. Next, the relationship between age and the near limit will be described.

FIG. 4 is a diagram for explaining the relationship between age and the near point limit.
The horizontal axis in FIG. 4 indicates the age, and the vertical axis indicates the near point limit (unit: meters (m)). Figure 4 is based on data from Mordi & Ciuffreda (Mordi, JA & Ciuffreda, KJStatic aspects of accommodation: age and presbyopia. Vision Research, 38, 1643-1653, 1998.) Has been.

  Here, the near point limit refers to the limit of the distance when the observer 10 views an object at a short distance. That is, when the working distance is set smaller than the near point limit value, the object cannot be clearly seen in the first place. The normal observer 10 can change the refractive power of the crystalline lens (lens) of the eyeball optical system according to the distance to the observation target. For example, when the observer 10 looks close, the observer increases the thickness of the lens and increases the refractive power to adjust the target image on the retina. However, since the adjustment power of the lens decreases with age, the near limit (the adjustment power of the lens) increases accordingly. Therefore, it is possible to more accurately reproduce the appearance considering the presbyopia state by considering not only the working distance but also the near point limit corresponding to the age.

For example, as shown in FIG. 4, the near point limit increases as the age increases.
Using the least square method based on these data, the relational expression between the age X in the corrected state and the near point limit Y5 is obtained.
Near point limit Y5 = 0.0281 × exp (0.0553 × age X) (R ² value: 0.8902) (Expression 6)
Get.
In calculating (Equation 6), data from the age of 10 to 51 is used in consideration of the accuracy of the data.
Such (Equation 2) to (Equation 6) and the above-described data are also incorporated in the storage unit 42 of the visual simulation experience apparatus 1. The data incorporated in the visual simulation experience apparatus 1 is not limited to the data described above, and may be updated to the latest data. Along with this, (Expression 1) to (Expression 6) are also updated to the latest expression.

  Next, the procedure of the visual simulation experience including the operation method of the visual simulation experience apparatus 1 will be described. FIG. 5 is a flowchart for explaining the flow of the visual simulation experience. This flowchart is branched according to conditions that the observer 10 wants to experience, and the above-described (formula 1) to (formula 6) are properly used for each branch.

First, the observer 10 is positioned so that the filter 12 is viewed from the front, and in the present embodiment, the observer 10 inputs the virtual working distance D _ht to the distance input unit 41a of the visual simulation experience apparatus 1 (step S10). Originally, the working distance refers to a distance (actual distance) between the observer 10 and the target 11 when the observer 10 (for example, an elderly person) without the filter 12 looks at the target 11. In this embodiment, in order to simulate a low visual acuity, the distance between the observer 10 and the target 11 via the filter 12 (assumed distance) is set as the working distance D _ht . The work distance _Dht shown below is the “virtual work distance” described above.
The observer may observe from an arbitrary distance near the filter 12. One of the features of this system is that it does not affect the accuracy of the simulated experience unless the observation distance is extremely far from the filter.

Next, the observer 10 inputs the age X that the user wants to experience in the age input unit 41b (step S20).
Here, the observer 10 has different visual acuity between near vision and far vision (FIGS. 2 and 3). Therefore, based on the input work distance D _ht , the calculation unit 41 determines whether the observer 10 is looking at the target 11 in near vision or far vision (step S30). Note that the working distance D _ht may be measured by the distance measuring unit 43.
For example, a predetermined threshold value is provided in the range of 30 cm to 5 m. If the work distance D _ht <threshold value, it is determined to be near vision, and if the work distance D _ht ≧ threshold value, it is determined to be far vision. Thus, it is determined whether to use (Equation 2) or (Equation 4) according to the length of the working distance _Dht .
Next, in the case of near vision, the observer 10 inputs whether he / she wants to experience low visual acuity with the naked eye or correction (step S40). This condition is input to the correction condition input unit 41e. Thereby, even if the input age X is the same, it is determined whether to use (Equation 2) or (Equation 3) depending on the naked eye state or the correction state.

Next, when it is recognized that the naked eye state is selected, the near vision acuity Y1 at age X is calculated by the visual acuity calculation unit 41d of the calculation unit 41 using (Equation 2) read from the storage unit 42. (Step S41a). Here, the calculated near vision Y1 is the near vision in the naked eye state at the age X that the observer 10 wants to experience.
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c using (Equation 1) read from the storage unit 42 from the obtained near vision Y1 (step S41b).

If it is recognized in step S40 that the correction state has been selected, the near vision acuity Y2 at age X is calculated by the visual acuity calculation unit 41d of the calculation unit 41 using (Equation 3) read from the storage unit 42. Is calculated (step S42a). Here, the calculated near vision Y2 is the near vision in the corrected state at the age X that the observer 10 desires to experience.
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c using (Equation 1) read from the storage unit 42 from the obtained near vision Y2 (step S42b).

On the other hand, if it is determined in step S30 that the person is far-sighted, the observer 10 inputs whether he / she wants to experience low vision with the naked eye or with correction (step S60).
Next, when it is recognized that the naked eye state is selected, the distance vision Y3 at the age X is calculated by the visual acuity calculation unit 41d of the calculation unit 41 using (Equation 4) (step S61a). Here, the calculated far vision sight Y3 is the distance vision in the naked eye state at the age X that the observer 10 wants to experience.
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c using (Expression 1) read from the storage unit 42 from the obtained far vision sight Y3 (step S61b).

In step S60, when it is recognized that the correction state is selected, the distance vision Y4 at age X is calculated by the visual acuity calculation unit 41d of the calculation unit 41 using (Equation 5) read from the storage unit 42. Calculation is performed (step S62a). Here, the calculated far vision Y4 is the distance vision in the corrected state at the age X that the observer 10 wants to experience.
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c using (Equation 1) read from the storage unit 42 from the obtained far vision sight Y4 (step S62b).

Next, after the filter distance D _tf is output under each condition (steps S41b, S42b, S61b, S62b), for example, the position of the filter 12 is automatically adjusted by the distance measuring unit 43 of the control unit 20. (Step S70). Alternatively, the filter 12 may be manually installed at a predetermined position based on the filter distance D _tf calculated by the observer 10 himself.

Thereafter, the observer 10 can experience presbyopia by viewing the target 11 through the filter 12 (step S80). Note that the visual acuity of the simulated experience, the filter distance D _{tf, and the} like may be displayed on the result notification unit 44 of the visual simulated experience apparatus 1.

In addition to the above-described functions, the visual simulation experience apparatus 1 has a limiting function (limiter function) based on the near point limit.
For example, when the age is input (step S20), the visual simulation experience apparatus 1 uses the near-point limit calculation unit 41f to calculate the near-point limit calculation unit 41f using (Equation 6) read from the storage unit 42 based on the value. A point limit Y5 is calculated (step S90).

Next, at this stage, the visual simulation experience apparatus 1 has already recognized the work distance D _ht, and therefore determines whether the work distance D _ht is shorter or longer than the near point limit Y5 (step S91). If the working distance D _ht is less than or equal to the near point limit, the observer 10 is informed that the visual simulated experience is not possible (step S92).

For example, the result notifying unit 44 informs the observer 10 that “the target distance cannot be clearly seen because the working distance is set smaller than the near point limit” and “the working distance needs to be reset”. To notify. This notification may be performed by a character display or a sound display. The observer 10 who has recognized this can desire the visual simulated experience again by changing the working distance _Dht . On the other hand, when the work distance D _ht is longer (larger) than the near point limit, the computing unit 41 of the visual simulation experience apparatus 1 proceeds to the next step, step S30. Thus, when the working distance D _ht is larger than the near point limit at the age that the observer 10 wants to experience, the filter distance D _tf is calculated, and when the working distance D _ht is less than the near point limit, the filter distance D _tf is Not calculated.

  If such a visual simulation experience apparatus 1 is used, the observer 10 can easily experience presbyopia corresponding not only to low visual acuity but also to older age and the near point limit. At this time, the observer 10 can simulate presbyopia without requiring medical expertise such as presbyopia characteristics and near point limit.

Specifically, the filter distance D _tf for reproducing the average appearance at the age is immediately calculated just by inputting the working distance D _ht , the age to be simulated, the naked eye state, and the correction state. Then, based on the calculated filter distance D _tf , the presbyopia can be simulated by simply adjusting the position of the filter 12.
Moreover, since the visual simulation experience apparatus 1 can select a naked eye state or a correction state, a product that is frequently viewed in the naked eye state and a product that is frequently viewed in the correction state can be used for evaluation.

For example, reading glasses are used when reading newspapers, books, etc., and are often not used in bathrooms, toilets, and the like. Therefore, it is preferable that the display unit provided in the toilet or bathroom has a visual simulation experience in a naked eye state. On the other hand, with regard to letters, pictures, etc. drawn in newspapers and books, it is possible to experience visual simulation in a corrected state. Thus, in the visual simulation experience apparatus 1, the evaluation in the naked eye state and the evaluation in the correction state can be properly used.
Furthermore, when the work distance D _ht is shorter than the near point limit, the result notification unit 44 of the visual simulation experience apparatus 1 notifies the observer 10 to that effect, and the observer is informed that the setting of the work distance is not appropriate. You can also let them know.

If such a visual simulation experience apparatus 1 is used, the appearance considering the presbyopia associated with aging can be easily reproduced. Therefore, the visual simulation experience apparatus 1 can be widely applied to product design considering universal design.
For example, it is assumed that the target 11 is an operation button such as a remote controller used in a toilet, kitchen, bathroom, or the like, or an icon of a display panel provided in a financial institution, a station premises, or the like. By visually experiencing the average appearance of the assumed age group of users who use these targets 11, the design of the target 11 that is easy to see for users of the assumed age group, such as the size and color scheme of operation buttons, etc. design. As a result, for example, it is possible to design a product in consideration of the universal design that is easy to see even for presbyopia. Further, when the target 11 is a magazine or the like, it is possible to perform a layout design that is easy to see for readers of the assumed age group by using the visual simulation experience apparatus 1 of the present invention.

Moreover, the filter 12 of the visual simulation experience apparatus 1 does not become cloudy due to the influence of sweat or the like unlike the goggles type.
In addition, the vicinity of the eyes of the observer 10 is not restricted by the apparatus jig as in the goggles type. Therefore, even when the observer's 10 naked eye vision is poor, the observer 10 can easily make a visual simulation experience by correcting with glasses or the like.

Moreover, according to the visual simulation experience apparatus 1, a plurality of observers (designers) 10 can see the same target 11 in a wide field of view using one apparatus. In particular, when the above-mentioned ground glass is used as the filter 12, the appearance of the target 11 does not vary greatly even if the working distance D _ht is slightly changed as long as the filter distance D _tf is determined.
That is, even if there are a plurality of observers 10, it is not necessary to make the work distances D _{ht of} each person completely coincide with each other or make the viewing angles of each person completely coincide. Thereby, a plurality of observers 10 can discuss the appearance of the target 11 on the spot while looking at the same target 11. As a result, separation (subjectivity) by a specific observer 10 is less likely to occur in the target design.

  Moreover, according to the visual simulation experience apparatus 1, the visual acuity can be changed easily and continuously by moving the position of the filter 12. In addition, if the lighting environment such as a lighting fixture is adjusted, the design can be evaluated in an environment corresponding to the use situation of the actual product.

Next, the visual simulation experience apparatus 2 that allows the above-described visual simulation to be more easily experienced will be described. FIG. 6 is a block diagram of the visual simulation experience apparatus.
The visual simulation experience apparatus 2 includes a main body (visual simulation experience apparatus jig) 2A and calculation means 2B.
The main body 2A is a jig used for the visual simulation experience device 2, and includes a resin case 50, a filter 12 attached to the resin case 50 via a hinge member 51, and a frame serving as an outer frame of the filter 12. 12f, a tape-like measure member 43a, a stopper 52 for fixing the measure member 43a, and a display unit 53 for displaying a distance measured by the measure member 43a.

The measure member 43 a can be expanded and contracted in the direction of arrow A, and can be extended from the resin case 50 or stored in the resin case 50. With the measure member 43a, the filter distance D _tf and the working distance D _ht described above can be measured. As described above, in the main body 2A, the filter 12 and measuring means for measuring at least one of the filter distance D _tf and the working distance D _ht are integrated.

Here, since the filter 12 is attached to the resin case 50 via the hinge member 51, the movement in the direction of arrow B is possible. For example, when the filter 12 is substantially perpendicular to the main surface of the resin case 50, the observer 10 can see the target 11 through the filter 12.
In particular, when the measure member 43a is housed in the resin case 50 and the main surface of the filter 12 is overlapped with the main surface of the resin case 50, the main body 2A becomes compact enough to be gripped, and the degree of freedom in carrying is increased. .
In addition, although the case where the main-body part 2A and the measurement means were integrated was described here, the main body 2A and the measurement means may be provided separately.

  On the other hand, the calculation means 2B corresponds to, for example, the computer 55, the quick calculation table 56, and the like. The computer 55 is installed with a program for executing the flowchart illustrated in FIG. The storage means in the computer 55 incorporates the above-described equations (1) to (6) and various data. In the calculation quick reference table 56, a conversion table and a conversion graph (hereinafter referred to as a conversion table) for carrying out the above-described flowchart are described. The observer 10 can reach any one of steps S41b, S42b, S61b, and S62b from step S10 described above by following these calculation means 2B. In this case, the external calculation means has the same function as the calculation means 2B described above.

  When the calculation means 2B is a so-called notebook personal computer or mobile phone, the calculation means 2B is also compact, and the degree of freedom of carrying is increased. In this case, you may prepare the case which accommodates both the main-body part 2A and the calculation means 2B (not shown).

Next, a specific method of using the visual simulation experience apparatus 2 will be described with reference to the flowchart illustrated in FIG. The computer 55 is taken as an example of the calculation means 2B.
First, the observer 10 is positioned in front of the target 11, measures the working distance D _ht with the measure member 43 a, and inputs the value to the calculation means 2 </ b> B of the visual simulation experience apparatus 2 (step S <b> 10). The distance input unit 41a for inputting the distance is displayed on the display screen of the computer 55, for example.

Next, the observer 10 inputs the age X that the user wants to experience in the calculation means 2B (step S20). The age input unit 41b for inputting the age is displayed on the display screen of the computer 55, for example.
As described above, the observer 10 has different visual acuity between near vision and far vision. Therefore, based on the work distance D _ht , the calculation unit 41 in the computer 55 determines whether the observer 10 is looking at the target 11 in near vision or far vision (step S30).

Next, in the case of near vision, the observer 10 inputs to the computer 55 whether he / she wants to experience low visual acuity with the naked eye or correction (step S40).
Next, when the naked eye state is selected and recognized, (Equation 2) is used to calculate the near vision Y1 at age X by the visual acuity calculation unit 41d of the calculation unit 41 of the computer 55 (step S41a). .
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c of the computer 55 using (Equation 1) from the obtained near vision Y1 (step S41b).

In step S40, when it is recognized that the correction state has been selected, (Equation 3) is used, and the visual acuity calculation unit 41d of the calculation unit 41 of the computer 55 calculates the near vision acuity Y2 at the age X ( Step S42a).
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c of the computer 55 using (Equation 1) from the calculated near vision Y2 (step S42b).

On the other hand, if it is determined in step S30 that the person is far-sighted, the observer 10 inputs whether he / she wants to experience low vision with the naked eye or with correction (step S60).
Next, when it is recognized that the naked eye state has been selected, the distance vision Y3 at the age X is calculated by the visual acuity calculation unit 41d of the calculation unit 41 of the computer 55 using (Equation 4) (step S61a).
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c of the computer 55 using (Equation 1) from the obtained far vision sight Y3 (step S61b).

If it is recognized in step S60 that the correction state has been selected, (Equation 5) is used to calculate the distance vision Y4 at age X by the visual acuity calculation unit 41d of the calculation unit 41 of the computer 55 (step S60). S62a).
Subsequently, the filter distance D _tf is output by the distance calculation unit 41c of the computer 55 using (Equation 1) from the obtained far vision sight Y4 (step S62b).

Next, after the filter distance D _tf under each condition is output to the screen of the computer 55 (steps S41b, S42b, S61b, and S62b), the observer 10 determines the length of the output filter distance D _tf. The measure member 43a corresponding to is pulled out from the resin case 50. The drawn measure member 43 a is thereafter fixed by the stopper 52. Then, by aligning the tip of the measure member 43a with the position of the target 11, the distance between the target 11 and the filter 12 becomes the output filter distance _Dtf . Thereafter, the observer 10 can have a simulated experience with the target visual acuity by viewing the target 11 through the filter 12 (step S80).
Also in the computer 55, the observer 10 is notified whether or not the working distance _Dht is greater than the near point limit.

  Such a visual simulation experience apparatus 2 also provides the same effects as the visual simulation experience apparatus 1 described above. Furthermore, in the visual simulation experience apparatus 2, the main body 2A and the calculation means 2B have a more compact configuration. This improves the portability of the device and makes it easier to carry. In addition, operability is improved. In particular, the main body 2A can be reused by a plurality of observers 10 because of its compact shape.

  In addition to the above-described form, the calculation means 2B includes a form in which the calculation means 2B is stored in a microcomputer and the microcomputer is directly built in the main body 2A. In this case, a touch panel type display unit 54 is provided on the side surface of the main unit 2A, and necessary data is input from the display unit 54 or a calculation result is output.

  The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are included in the above-described embodiments, those skilled in the art appropriately modified the design are also included in the scope of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the visual simulation experience devices 1 and 2 are not limited to those illustrated, and can be changed as appropriate.

Specifically, as shown in FIG. 7, a form in which the main body 2A is attached to a tripod rack 60 is also included in the present embodiment. Further, the filter 12 may be separated from the main body 2A and the filter 12 itself may be directly attached to the tripod rack 60.
The tripod rack 60 is a so-called camera stand type tripod rack 60, and the fine angle of the filter 12 can be adjusted. For this reason, even if the target 11 is not installed perpendicularly to the ground, the angle of the filter 12 can be adjusted by the tripod rack 60. Furthermore, by increasing the area of the filter 12 attached to the tripod rack 60, it becomes possible for a plurality of people to observe the target 11 through the filter 12. This makes it easier for a plurality of people to observe the target 11, and allows a plurality of people to discuss the design while sharing the same appearance.
In addition, each element included in each of the embodiments described above can be combined or combined as far as technically possible, and a combination of these elements is within the scope of the present invention as long as it includes the features of the present invention. Is included.

1, 2 Visual simulation experience device
2A Body (Jig for visual simulation experience device)
2B calculation means
10 observers
11 Target
12 Filter
12f frame
13a Retina image
20, 30 Control unit
40 Control device
41 Calculation unit
41a Distance input part
41b Age input section
41c Distance calculation unit
41d visual acuity calculation unit
41e Correction condition input unit 41f Peripheral limit calculation unit 42 Storage unit
43 Distance measurement unit
43a Major material
44 Result notification section
50 resin case
51 Hinge member
52 Stopper
53, 54 Display
55 computers
56 Calculation chart
60 Tripod rack A, B Arrow
D _ht working distance
D _tf filter distance
X age
Y sight
Y1, Y2 Near vision
Y3, Y4 distance vision
Y5 Near limit

Claims (8)

It is a visual simulation experience device to simulate the visual state,
A filter that is arranged between the observer and the object and diffusely reflects light on the surface and / or during the passage;
An age input unit for inputting the age that the observer wants to experience;
A filter distance calculation unit that calculates a filter distance between the object and the filter based on the input age;
Visual simulation experience device characterized by having. A visual acuity calculating unit that determines visual acuity based on the age that the observer wants to experience;
The visual simulation experience apparatus according to claim 1, wherein the filter distance calculation unit calculates the filter distance based on the visual acuity determined by the visual acuity calculation unit. A work distance input unit for inputting a work distance between the observer and the object;
The filter distance calculation unit determines the filter distance based on the input work distance and the visual acuity determined by the visual acuity calculation unit according to the age. Visual simulation experience device. A result notifying unit for notifying the observer of information,
The filter distance calculation unit is determined by the visual acuity calculation unit according to the input work distance and the age when the work distance is larger than the near point limit at the age at which the observer wants to experience pseudo Determining the filter distance based on the visual acuity;
The said result notification part notifies the said observer that the said filter distance calculation part does not determine the said filter distance, when the said working distance is below the near point limit, The said observer is characterized by the above-mentioned. Visual simulation experience device. A correction condition input unit for inputting that the observer is in the naked eye state or the correction state;
The filter distance calculation unit determines the filter distance based on the visual acuity determined by the visual acuity calculation unit according to the input work distance, the age, and correction conditions. 4. Visual simulation experience apparatus according to 4. A measuring unit for measuring the working distance or the filter distance;
The filter distance calculation unit determines the filter distance based on the work distance measured by the measurement unit, the visual acuity determined according to the age,
The visual simulation experience apparatus according to claim 4, wherein the filter distance can be measured by the measurement unit.   The visual simulation experience apparatus according to claim 6, wherein the filter and the measurement unit are integrated. A visual simulation experience method for experiencing the visual state,
Inputting the age that the observer wants to experience in the age input unit;
A filter distance calculation unit determining a filter distance between the object and the filter based on the input age;
Visual simulation experience method characterized by having.