TWI788486B - Visual function inspection system, optical characteristic calculation system, optical member selection method, optical member manufacturing method, display member manufacturing method, lighting device manufacturing method, visual function inspection device, optical characteristic calculation device, visual function inspection method, optical Calculation method of characteristics, computer program, and recording medium - Google Patents

Abstract

The visual function test system of the present invention has: the first shape information representing mutually different plural shapes of the attention part included in the visual target by memory and/or indicating the position included in the visual target when entering the subject's field of vision The memory unit of the second shape information of the mutually different plural shapes of the glare part, and the shape of the aforementioned attention part and/or the aforementioned Determining unit A1 composed of a determining unit for the shape of the glare portion; or a plurality of light sources, and at least one light source among the aforementioned plurality of light sources used as the glare portion in the visual function test and its position determined according to the purpose of the visual function test Any one of the determination unit A2 that the determination unit constitutes; the luminance contrast value of the luminance of the aforementioned attention part and the brightness of the background part, the luminance average value of the visual target including the aforementioned attention part and the aforementioned background part, and the stimulus of the color stimulus of the visual target Value combination of at least one different optotype is sequentially presented to the subject’s visual function testing unit; based on the inspection results of the aforementioned visual function testing unit, the correlation between the aforementioned luminance contrast value and the aforementioned luminance average In the coordinate system of , for each combination of the stimulus values of the aforementioned color stimuli, the threshold between the areas with discrimination and the areas without the discrimination of the aforementioned subject is obtained, thereby obtaining at least two of the aforementioned critical values. analysis unit.

Description

Visual function inspection system, optical characteristic calculation system, optical member selection method, optical member manufacturing method, display member manufacturing method, lighting device manufacturing method, visual function inspection device, optical characteristic calculation device, visual function inspection method, optical Calculation method of characteristics, computer program, and recording medium

The present invention relates to a visual function inspection system, an optical characteristic calculation system, a selection method of an optical member, a manufacturing method of an optical member, a manufacturing method of a display member, a manufacturing method of a lighting device, a visual function inspection device, an optical characteristic calculation device, an optical A function inspection method, a calculation method of optical characteristics, a program, and a computer-readable recording medium.

Optical components such as spectacle lenses have optical characteristics such as spectral transmittance and chromatic tristimulus values such as X value, Y value, and Z value. With regard to such optical properties, means for calculating the optical properties possessed by each person's visual function based on objective quantitative evaluation, and means for selecting optical members having the aforementioned optical properties have not been developed yet. For example, Non-Patent Document 1 reports a method of evaluating optical properties using a conventional ophthalmology device or system. In this method, subjects are asked to try various optical members one by one.

[Prior Art Literature] [Non-patent literature]

[Non-Patent Document 1] Xin Ophthalmology 24(9), 2007, 1179-1186, Bu Er Men He

When evaluating optical properties using the above-mentioned conventional optical performance inspection, although it is possible to select an optical component with effective optical characteristics under a certain light environment during the optical function inspection, it may not be possible under different light environments. possibility of getting results. In addition, the above-mentioned method is one in which the subject tries out various optical members one after another, and performs subjective evaluation of optical characteristics.

In addition, there are various types of optotypes generally used in visual function inspections, and it is assumed to be used according to the purpose of each inspection. But despite this, most discriminative examinations are performed using only a single optotype.

An object of the present invention is to consider visual function inspection including various environments during inspection, and to establish a method for objectively and quantitatively evaluating the optical characteristics of an optical member based on the inspection. In addition, an object of the present invention is to establish a method that does not require trial and error of various optical members in the evaluation of optical characteristics.

In addition, the object of the present invention is to establish a high-precision inspection method by separately using visual targets for inspection according to the purpose of using optical components. Law.

An aspect of the visual function testing system of the present invention includes first shape information representing mutually different plural shapes of the attention part included in the optotype by memory and/or indicating the position included in the subject's field of vision. The memory unit of the second shape information of the glare part in the aforementioned optotype, which is different from each other in multiple shapes, and the shape of the aforementioned attention part is determined based on the aforementioned first shape information and/or the aforementioned second shape information in response to the purpose of visual function inspection And/or the determining unit A1 composed of the determination unit of the shape of the aforementioned glare portion; or a plurality of light sources, and at least one light source among the aforementioned plurality of light sources used as the glare portion in the visual function inspection and its position according to the visual function inspection Any one of the determination unit A2 composed of the determination unit determined by the purpose of determining the purpose; the luminance contrast value of the luminance of the aforementioned attention part and the brightness of the background part, the luminance average value of the optotypes including the aforementioned attention part and the aforementioned background part, and the value of the optotype At least one different visual mark of the combination of stimulus values of color stimuli is sequentially presented to the visual function testing unit of the subject; In the coordinate system related to the values, in each combination of the stimulus values of the aforementioned color stimuli, the criticality between the areas that the subject has discrimination and the areas that do not have the aforementioned discrimination is obtained, thereby obtaining at least two The aforementioned critical unit of analysis.

In addition, instead of the aforementioned visual function inspection means, there is provided a contrast value for accepting the luminance contrast value of the luminance of the aforementioned attention part and the luminance of the background part, The results of the visual function test obtained by sequentially presenting to the subject at least one different optotype including the combination of the average luminance of the optotypes of the aforementioned focus portion and the aforementioned background portion, and the stimulus values of the color stimuli of the optotype The receiving unit of the result.

An aspect of the optical characteristic calculation system of the present invention includes: a calculation unit for calculating the optical characteristics of the optical member for correcting the visual function of the subject based on the test results of any of the visual function test systems described above.

One aspect of the selection method of the optical member of this invention selects an optical member based on the said optical characteristic computed by the said optical characteristic calculation system.

One aspect of the manufacturing method of the optical member of this invention manufactures an optical member based on the said optical characteristic calculated by the said optical characteristic calculation system.

One aspect of the manufacturing method of the display member of this invention includes the process of manufacturing an optical member based on the said optical characteristic calculated by the said optical characteristic calculation system.

One aspect of the method of manufacturing a lighting device according to the present invention includes a process of manufacturing an optical member based on the optical properties calculated by the optical property calculation system.

One aspect of the visual function testing device of the present invention has: first shape information representing mutually different plural shapes of the attention part included in the optotype by memory and/or the position in the subject's field of vision Mutually different plural shapes representing the glare part included in the aforementioned optotype Determination of the composition of the memory unit for the second shape information, and the determination unit for determining the shape of the attention part and/or the shape of the glare part based on the first shape information and/or the second shape information in response to the purpose of the visual function test Part B1; or any one of the decision part B2 composed of a decision part that determines at least one light source used as a glare part in the visual function inspection among the external multiple light sources and its position according to the purpose of the visual function test; The above-mentioned examinee prompts the prompting part of the aforementioned optotype; performs the luminance contrast value of the luminance of the aforementioned attention part and the brightness of the aforementioned background part, the luminance average value of the optotype including the aforementioned attention part and the aforementioned background part, and the color stimulus of the optotype. At least one different optotype of the stimulus value combination is sequentially presented to the inspection part of the visual function test of the aforementioned prompting part; In the relevant coordinate system, in each combination of the stimulus values of the aforementioned color stimuli, the threshold between the aforementioned areas that the subject has discrimination and the areas that do not have the aforementioned discrimination is obtained, thereby obtaining at least two of the aforementioned thresholds. analysis department.

An aspect of the optical characteristic calculation device of the present invention includes a calculation unit for calculating the optical characteristics of the optical member for correcting the visual function of the subject based on the inspection result of the visual function inspection device.

The visual function testing method of the present invention has the following steps: the first shape information based on the mutually different plural shapes indicating the attention part contained in the visual target and/or the position included in the subject's field of vision is indicated by the visual target The determination process C1 consisting of the second shape information of the mutually different plural shapes of the glare portion in accordance with the purpose of functional inspection to determine the shape of the aforementioned attention portion and/or the determination process of the shape of the aforementioned glare portion; or Any one of the determination process C2 of the determination process composition of at least one light source used as the glare part in the visual function inspection among the plurality of light sources and its position according to the purpose of the visual function inspection; At least one different optotype, which is a combination of the luminance contrast value of the luminance of the part, the luminance average value of the optotype including the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype, is presented to the subject in sequence. Visual function inspection project; based on the inspection results in the aforementioned visual function inspection project, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in the combination of the stimulus values of each of the aforementioned color stimuli, the aforementioned The criticality between the subject's identifiable area and the non-identifiable area is used to obtain at least 2 of the above-mentioned critical analysis projects.

An aspect of the optical characteristic calculation method of the present invention includes a calculation process of calculating the optical characteristics of the optical member for correcting the visual function of the subject based on the inspection result of the visual function inspection device.

One aspect of the program of the present invention is a program for causing a computer to execute the following steps: based on the first shape information indicating mutually different complex shapes of the attention part included in the optotype and/or when entering the test The position in the visual field of the patient indicates the second shape information of the plural shapes of the glare portion included in the optotype, which is different from each other, and determines the shape of the attention portion and/or the shape of the glare portion according to the purpose of visual function inspection. Decision step D1; or any one of the decision steps D2 consisting of at least one light source used as the glare part in the visual function test among the plurality of light sources and its position determined according to the purpose of the visual function test; The luminance contrast value of the luminance of the highlighted part and the luminance of the background part, including the aforementioned At least one different optotype of the combination of the luminance average value of the optotype of the part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype is sequentially presented to the aforementioned visual function test step of the subject; based on the aforementioned visual function test In the inspection result of the step, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, for each combination of the stimulus values of the aforementioned color stimuli, find out the areas that are distinguishable by the subject and those that do not have the aforementioned color stimuli. Criticality between the discriminative regions, whereby at least 2 analytical steps of the aforementioned criticality are determined.

An aspect of a computer-readable recording medium according to an example of the present invention records the above-mentioned program.

One aspect of the visual function testing system of the present invention is provided with: first shape information representing mutually different plural shapes of attention parts included in the optotype and/or indicating the position in the subject's field of vision included in the memorization The memory unit of the second shape information of the mutually different plural shapes of the glare part in the aforementioned optotype, and the shape and shape of the aforementioned attention part are determined based on the aforementioned first shape information and/or the aforementioned second shape information in response to the purpose of visual function inspection. /or the determining unit of the shape of the aforementioned glare portion; the combination of the luminance contrast value of the luminance of the aforementioned attention portion and the brightness of the background portion, the average brightness of the aforementioned attention portion and the aforementioned background portion, and the stimulus value of the color stimulus of the visual target At least one different visual mark of the above-mentioned examinee is sequentially presented to the visual function testing unit of the aforementioned subject; based on the inspection results of the aforementioned visual function testing unit, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value , for each combination of the stimulus values of the aforementioned color stimuli, find the threshold between the areas where the subject has discrimination and the area where the subject does not have the aforementioned discrimination, thereby obtaining at least 2 critical analysis units.

Another aspect of the visual function inspection system of the present invention has: a plurality of light sources, and at least one light source among the plurality of light sources used as a glare portion in the visual function inspection, and its position are determined according to the purpose of the visual function inspection. Determining unit; at least one of the combination of the luminance contrast value of the luminance of the background part including the glare part and the luminance of the attention part, the luminance average value of the attention part and the background part, and the stimulus value of the color stimulus of the visual target The different optotypes are presented to the subject’s visual function testing unit in sequence; based on the inspection results of the aforementioned visual function testing unit, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in each of the aforementioned Combining the stimulus values of the color stimuli, the threshold between the subject's discernible area and the non-discriminatory area is obtained, thereby obtaining at least two critical analysis units.

Another aspect of the visual function testing system of the present invention is provided with: first shape information indicating mutually different plural shapes of attention parts included in the optotype and/or indicating a position in the subject's field of vision included in the memorization The memory unit of the second shape information of the mutually different plural shapes of the glare part in the aforementioned optotype, and the shape and shape of the aforementioned attention part are determined based on the aforementioned first shape information and/or the aforementioned second shape information in response to the purpose of visual function inspection. /or the determining unit of the shape of the aforementioned glare portion; accepting the luminance contrast value of the luminance of the aforementioned attention portion and the brightness of the background portion, the brightness average value of the visual target including the aforementioned attention portion and the aforementioned background portion, and the stimulus of the color stimulus of the visual target At least one different optotype of the combination of values is sequentially presented to the aforementioned subject to obtain the acceptance unit of the result of the visual function test; based on the test result of the aforementioned visual function test unit, when the aforementioned brightness contrast value In the coordinate system related to the aforementioned average value of luminance, in each combination of the stimulus values of the aforementioned color stimuli, the criticality between the areas where the subject has discrimination and the areas that do not have the aforementioned discrimination is obtained, thereby obtaining Out at least 2 of the aforementioned critical analysis units.

Another aspect of the visual function inspection system of the present invention has: a plurality of light sources, and at least one light source among the plurality of light sources used as a glare portion in the visual function inspection, and its position are determined according to the purpose of the visual function inspection. Determining unit; accepting the combination of the luminance contrast value of the luminance of the background part including the glare part and the luminance of the attention part, the luminance average value of the visual target including the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the visual target The receiving unit of the results of the visual function test obtained by sequentially presenting at least one different optotype to the subject; based on the test results of the aforementioned visual function test unit, when expressing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value In the coordinate system of , for each combination of the stimulus values of the aforementioned color stimuli, the threshold between the areas with discrimination and the areas without the discrimination of the aforementioned subject is obtained, thereby obtaining at least two of the aforementioned critical values. analysis unit.

An aspect of the optical characteristic calculation system of the present invention includes a calculation unit for calculating the optical characteristics of the optical member for correcting the visual function of the subject based on the inspection result of any of the visual function inspection systems described above.

One aspect of the selection method of the optical member of this invention selects an optical member based on the said optical characteristic computed by the said optical characteristic calculation system.

One aspect of the manufacturing method of the optical member of this invention manufactures an optical member based on the said optical characteristic calculated by the said optical characteristic calculation system.

One aspect of the manufacturing method of the display member of this invention includes the process of manufacturing an optical member based on the said optical characteristic calculated by the said optical characteristic calculation system.

One aspect of the method of manufacturing a lighting device according to the present invention includes a process of manufacturing an optical member based on the optical properties calculated by the optical property calculation system.

One aspect of the visual function testing device of the present invention is provided with: first shape information representing mutually different plural shapes of the attention part included in the optotype and/or indicating the position in the subject's field of vision included in the memorization The memory unit of the second shape information of the glare part in the aforementioned optotype is different from each other in multiple shapes, and the shape and shape of the aforementioned attention part are determined based on the aforementioned first shape information and/or the aforementioned second shape information according to the purpose of the visual function test. /or the determination part of the shape of the aforementioned glare part; the prompting part of the aforementioned optotype is presented to the aforementioned subject; At least one different optotype of the combination of the target luminance average value and the stimulus value of the color stimulus of the target is sequentially presented to the inspection part of the visual function test of the aforementioned prompting part; In the coordinate system related to the aforementioned luminance contrast value and the aforementioned luminance average value, for each combination of the stimulus values of the aforementioned color stimuli, the threshold between the areas that the subject has discrimination and the areas that do not have the aforementioned discrimination is obtained. , to seek Out of at least 2 of the aforementioned critical analytical sections.

Another aspect of the visual function testing device of the present invention includes: a determination unit that determines at least one light source and its position used as a glare portion in the visual function test among the plurality of external light sources according to the purpose of the visual function test; The subject prompts the prompting part of the visual target; performs the luminance contrast value of the luminance of the background part including the glare part and the luminance of the attention part, the luminance average value of the visual target including the aforementioned attention part and the aforementioned background part, and the color stimulus of the visual target. At least one different optotype of the combination of stimulus values is sequentially presented to the inspection part of the visual function test of the aforementioned prompting part; In the relevant coordinate system, in each combination of the stimulus values of the aforementioned color stimuli, the threshold between the aforementioned areas that the subject has discrimination and the areas that do not have the aforementioned discrimination is obtained, thereby obtaining at least two of the aforementioned thresholds. analysis department.

An aspect of the optical characteristic calculation device of the present invention includes a calculation unit that calculates the optical characteristics of the optical member for correcting the visual function of the subject based on the inspection result of any of the visual function inspection devices described above.

One aspect of the visual function testing method of the present invention includes: based on the first shape information indicating mutually different complex shapes of the attention part included in the optotype and/or indicating the position included in the subject's field of vision. The second shape information of the mutually different plural shapes of the glare part in the aforementioned optotype is a process of determining the shape of the aforementioned attention part and/or the shape of the aforementioned glare part in response to the purpose of visual function inspection; At least one different optotype is sequentially presented to the aforementioned combination of the luminance contrast value of the luminance and the luminance of the background part, the luminance average value of the vision of the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype. Subject's visual function test project; based on the inspection results in the aforementioned visual function test project, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in the combination of the stimulus values of each of the aforementioned color stimuli, An analysis process for obtaining at least two thresholds by obtaining the threshold between the region where the subject has the discrimination and the region where the subject does not have the discrimination.

Another aspect of the visual function inspection method of the present invention has: a determination process of determining at least one light source used as a glare portion in the visual function inspection among the plurality of light sources and its position in accordance with the purpose of the visual function inspection; including the aforementioned At least one different optotype depends on the combination of the luminance contrast value of the luminance of the background part of the glare part and the luminance of the attention part, the luminance average value of the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype The visual function inspection project that is prompted to the subject; based on the inspection results in the aforementioned visual function inspection project, in the coordinate system that represents the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, the stimulus value of each of the aforementioned color stimuli Combination, to obtain the criticality between the above-mentioned subject's discrimination area and the above-mentioned non-discrimination area, thereby obtaining at least two analysis projects of the above-mentioned criticality.

An aspect of the optical characteristic calculation method of the present invention includes a calculation process of calculating the optical characteristics of the optical member for correcting the subject's visual function based on the test results of any of the visual function test methods described above.

One aspect of the program of the present invention is a program for causing a computer to execute the following steps: based on the first shape information indicating mutually different complex shapes of the attention part included in the optotype and/or when entering the subject The position in the field of view indicates the second shape information of the mutually different plural shapes of the glare part included in the aforementioned optotype, and the determination step of determining the shape of the aforementioned attention part and/or the shape of the aforementioned glare part in response to the purpose of visual function inspection; At least one different optotype depending on the combination of the luminance contrast value of the luminance of the aforementioned attention part and the brightness of the background part, the average luminance of the vision including the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype Prompt to the visual function inspection steps of the aforementioned subjects; based on the inspection results in the aforementioned visual function inspection steps, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in the stimulus of each aforementioned color stimulus Combination of values, to obtain the threshold between the above-mentioned subject's discrimination area and the above-mentioned non-discrimination area, thereby obtaining at least two analysis steps of the above-mentioned criticality.

Another aspect of the program of the present invention is a program for causing a computer to execute the following steps: among the plurality of light sources, at least one light source used as a glare portion in the visual function test and its position are determined according to the purpose of the visual function test The determination step; at least 1 of the combination of the luminance contrast value of the luminance of the background part including the aforementioned glare part and the luminance of the attention part, the luminance average value of the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the visual target The steps of the visual function inspection in which two different visual symbols are sequentially presented to the subject; based on the inspection results in the aforementioned visual function inspection project, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, For each combination of the stimulus values of the aforementioned color stimuli, the criticality between the areas where the subject has discrimination and the area that does not have the aforementioned discrimination is obtained, thereby obtaining at least two analysis steps of the aforementioned criticality.

One aspect of the computer-readable recording medium of the present invention is that the above-mentioned program is recorded.

According to the present invention, it is possible to realize a visual function inspection in consideration of various light environments including inspections.

11, 111, 211: computer

14, 114, 214: CPU

19: monitor

21, 121: Visual standard decision department

22, 122: Inspection result memory department

23, 223: Analysis Department

24, 224: Optical characteristic calculation part

[ Fig. 1 ] A block diagram showing the configuration of a visual function inspection system according to an embodiment.

[ Fig. 2 ] A diagram illustrating an optotype according to the embodiment.

[ Fig. 3 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 4 ] A flow chart showing the operation of the visual function inspection system of the embodiment.

[ Fig. 5 ] A flowchart (continued) showing the operation of the visual function inspection system of the embodiment.

[FIG. 6] Another diagram illustrating an optotype according to the embodiment.

[FIG. 7] Another diagram illustrating the visual mark of the embodiment.

[FIG. 8] Another diagram illustrating the visual mark of the embodiment.

[ Fig. 9 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 10 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 11 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 12 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 13 ] Another diagram illustrating an optotype according to the embodiment.

[ Fig. 14 ] A diagram illustrating a CA diagram of the embodiment.

[FIG. 15] Another diagram illustrating the CA diagram of the embodiment.

[FIG. 16] Another diagram illustrating the CA diagram of the embodiment.

[ Fig. 17 ] Another diagram illustrating the CA diagram of the embodiment.

[FIG. 18] Another diagram illustrating the CA diagram of the embodiment.

[ Fig. 19 ] A diagram illustrating the spectral distribution of the light source according to the embodiment.

[ Fig. 20 ] Another diagram illustrating the spectral distribution of the light source according to the embodiment.

[ Fig. 21 ] Another diagram illustrating the spectral distribution of the light source according to the embodiment.

[ Fig. 22 ] A diagram illustrating the spectral transmittance of the embodiment.

[ Fig. 23 ] Another flowchart showing the operation of the visual function inspection system of the embodiment.

[FIG. 24] Another diagram illustrating the CA diagram of the embodiment.

[FIG. 25] Another diagram illustrating the CA diagram of the embodiment.

[ Fig. 26 ] A flowchart showing a method of selecting an optical member according to the embodiment.

[ Fig. 27 ] A flowchart showing a method of manufacturing an optical member according to an embodiment.

[FIG. 28] Flowchart showing the manufacturing method of the display member of the embodiment picture.

[ Fig. 29 ] A flowchart showing a method of manufacturing the lighting device according to the embodiment.

[ Fig. 30 ] A block diagram showing the configuration of another visual function inspection system and optical characteristic calculation system according to the embodiment.

<First Embodiment>

Hereinafter, the visual function inspection system related to the first embodiment will be described with reference to the drawings.

The visual performance inspection system of the first embodiment includes a computer 11, an input device 18, and a monitor 19 as shown in FIG. 1 .

The computer 11 is a computer installed with a visual function inspection program for controlling each part of the visual function inspection system. As shown in FIG. 1 , the computer 11 has a data reading unit 12 , a memory device 13 , a CPU 14 , a memory 15 , an input/output I/F 16 , and a bus bar 17 . The data reading unit 12 , the memory device 13 , the CPU 14 , the memory 15 , and the input/output I/F 16 are connected to each other through a bus bar 17 . Furthermore, the computer 11 is connected to an input device 18 (a keyboard, a pointing device, etc.) and a monitor 19 that is an example of a display device via an input/output I/F 16 . In addition, the input/output I/F 16 outputs data for display to the monitor 19 while receiving various inputs from the input device 18 .

The data reading unit 12 is used when reading the above-mentioned visual performance test program from the outside. For example, the data read-in unit 12 is used to: from the possible memory of loading and unloading Read-in devices for media acquisition data (CD, magnetic disk, magneto-optical disk read-in devices, etc.), communication devices for communicating with external devices in accordance with known communication standards (USB interface, LAN module, wireless LAN modules, etc.) to form.

The storage device 13 is constituted by, for example, a storage medium such as a hard disk or a nonvolatile semiconductor memory. In the memory device 13, there are recorded a visual function inspection program or various data necessary for program execution.

The CPU 14 is a processor that collectively controls each unit of the computer 11 . The CPU 14 functions as each unit of the optotype determination unit 21 , the test result storage unit 22 , the analysis unit 23 , and the optical characteristic calculation unit 24 by executing the above-mentioned visual function test program. The details of each will be described later. In addition, each unit of the optotype determination unit 21 , the test result storage unit 22 , the analysis unit 23 , and the optical characteristic calculation unit 24 may be configured as hardware by dedicated circuits.

The memory 15 temporarily stores various calculation results of the visual function test program. The memory 15 is constituted by, for example, a volatile SDRAM or the like.

The monitor 19 is, for example, a liquid crystal display device, an organic EL display device, or the like. The monitor 19 can be installed at a distance of about 1 m from the position where the subject is seated, for example, at a height of about line of sight (for example, 1.2 m from the ground) when the subject is seated.

Before explaining the operation of the visual function inspection system with the configuration described above, first, the outline of the visual function inspection will be described.

The visual function inspection is an inspection for obtaining information on optical components for correcting the visual function of the subject. Among them, in the correction of visual function, it is not limited to the correction for the purpose of improving recognition, including: Correction for lowering awareness, correction for changing visual function, correction for optimizing visual function, etc. In the visual function test, for example, the subject visually observes the optotypes sequentially displayed on the monitor 19 (details will be described later), and checks the subject's visual mark recognition (for example, visible/invisible optotype, Perceived/non-perceived glare, etc.). The light environment at this time is, for example, an environment in which external light is blocked by a dark curtain indoors and indoor lighting is turned on in consideration of the visibility of the monitor 19 .

In addition, the visual function examination includes: identification examination assumed to be discomfort glare, identification examination assumed to be disability glare. Discomfort glare refers to a state in which the difference in luminance between adjacent parts is noticeable, or the amount of light incident on the eyes increases rapidly, and discomfort is felt. In addition, disability glare refers to a state in which the contrast of the retinal image decreases due to scattered light generated in the eye tissue, resulting in decreased vision.

The glare part in the present invention is close to the visual target, and the obstructing light that is arranged at the position entering the same visual field can be a light source that surrounds the surrounding of the visual target in a seamless manner, or can be separately arranged around the visual target. The form of multiple light sources. In addition, disturbing light is light that becomes a factor of discomfort glare and disability glare.

Discomfort glare may be circular or polygonal, for example, and its size and thickness may be set arbitrarily according to the purpose. Also, as the disability glare, a plurality of circular or polygonal light sources may be arranged close to the target. Arrangement positions include the form of arranging light sources in one or more rows in a straight line on the top, bottom, left and right of the visual target, and the form of arranging light sources in a plurality of lines radially around the visual target. In any case, it is preferable to arrange them in a horizontally and/or vertically symmetrical shape with respect to the visual targets. of each light source The size and number can be set arbitrarily.

The details of various identification checks will be described later.

Next, the related optotype will be described.

The optotype of the present invention specifically has Randall ring, sinusoidal ripple, Gabor optotype, circle optotype, oval circle optotype, four-corner optotype, English letter optotype, Snellen optotype, flat false platform optotype, number Optotypes, animal optotypes, Teller Acuity Cards II (optotypes for infants made because of the nature that infants like to see the lines), etc.

In this embodiment, two types of optotypes shown in FIGS. 2 and 3 are used. The optotype shown in FIG. 2 has a circular part A which is a noticeable part, and a background part thereof. It is used for identification checks assuming uncomfortable glare above. In the visibility test using the optotype shown in FIG. 2 , the subject judges the glare with respect to the circular portion A by watching from a position at a fixed distance from the optotype. In addition, although one circular portion A is shown in FIG. 2 , two or more plural circular portions A may be displayed on the monitor 19 as optotypes.

The optotype shown in FIG. 3 has a notable part, that is, a Landolt ring (Landolt ring) B, and a background part thereof. A ring-shaped glare part C is further provided on the outer side of the above-mentioned visual mark as a disturbing light, which is used for the above-mentioned visibility inspection assumed to be disability glare. The Randall's ring described here is used to judge eyesight, but it is a ring shape missing one part in any direction of up, down, left, or right. In the visibility test using the optotype shown in FIG. 3 , the subject judges the direction of the lack of Randall's ring B by viewing from a position at a fixed distance from the optotype. In addition, in FIG. 3 , although one set of the Randall ring B and the glare portion C is shown, a complex set of two or more may be displayed on the monitor 19 as an optotype.

In addition, the acquisition of the judgment result of the subject may be performed by any method. For example, the examinee may verbally describe the judgment result, and the examiner may input the judgment result through the input device 18 and the input/output I/F 16 after the examiner listens, or at least a part of the input device 18 may be placed on the Near the subject, the subject inputs the judgment result through the input device 18 and the input/output I/F 16 . In addition, a configuration may be adopted in which the determination result is input based on the subject's voice using voice recognition technology.

In this embodiment, an optotype is displayed on the above-mentioned monitor 19 . The optotype determining unit 21 determines what kind of optotype is to be displayed on the monitor 19 , and displays the determined optotype on the monitor 19 via the bus bar 17 and the input/output I/F 16 . The brightness (brightness) of the screen of the monitor 19, for example, can be set to 50% or less when the maximum brightness is about 300 cd/m ² . The details of the content of determination by the optotype determination unit 21 will be described later.

The visual function test system is a system for obtaining the optical characteristics of the optical member for correcting the subject's visual function based on the result of the visual function test while performing the visual function test. An optical member refers to a partial product that is a part of a machine/apparatus, and is related to the phenomenon and properties of light (such as an optical lens, an optical filter, etc.). In this embodiment, as an example of an optical member , to explain about the visual performance inspection system for optical lenses.

The operation of the visual performance inspection system described above will be described with reference to the flowcharts shown in FIGS. 4 and 5 .

In step S1, the CPU 14 controls each part to perform visual function inspection. check. The details of the visual function inspection will be described with reference to the flowchart shown in FIG. 5 (steps S11 to S18).

The visual function examination is the same as the above, including: the identification examination assumed to be discomfort glare, and the identification examination assumed to be disability glare. From step S11 to step S13 shown in Figure 5, change the brightness of the circular eye-catching part of the visual target presented in a certain background, and investigate the brightness of the glare perceived by the subject to perform the identification of the uncomfortable glare. examine. This inspection can be performed, for example, in a required time of about 3 minutes. On the other hand, from step S14 to step S18 shown in FIG. 5, at least one of the circular eye-catching part of the visual target presented in a certain background, that is, Randall's ring B, and the ring-shaped glare part arranged outside it is changed. The luminance of one was examined by examining the luminance threshold of the defect direction of Randall's ring B that the subject could recognize, and a discrimination test assuming that it was a disability glare was performed. This inspection can be performed in the required time of about 10 minutes, for example.

In step S11 , the CPU 14 performs a reference check using an optotype including a circular portion of interest. The reference inspection is an inspection used as an inspection reference to obtain information on optical components for correcting the subject's visual function. The reference inspection in step S11 is an inspection for comparison between the inspection of the ND filter effect in step S12 described later and the inspection of the color filter effect in step S13 .

The CPU 14 sequentially displays the optotypes including the circular attention parts described in FIG. 2 on the monitor 19 through the optotype determination unit 21 . In this embodiment, as an example, the optotype determination unit 21 sequentially changes and displays the brightness of the circular attention part from a dark state to a bright state with a certain presentation time. on monitor 19. For example, as shown in FIG. 6 , the optotype determination unit 21 changes the brightness of the circular attention part presented in a certain background to bright in the order of A-0, B-0, C-0, and D-0. state. When the subject feels at least a little glare when watching from a position at a certain distance from the target, it is judged as "perceived glare". This glare is caused by uncomfortable glare, and represents a state in which a difference in luminance between a certain background and a circular spot of interest is conspicuous in a visual function test. After the reference inspection is completed, the CPU 14 stores the optotype whose brightness of the circular attention part is darker than the optotype judged to be "glare sensed" as the inspection result in the inspection result storage unit 22, and proceeds to step S12.

In addition, for example, the optotype determination unit 21 simultaneously displays on the monitor 19 four attention parts with different luminances of A-0, B-0, C-0, and D-0, and the examinee compares the four attention parts to make a comparison. Judgment is also possible.

In step S12, the CPU 14 checks the effect of the ND filter. The inspection of the ND filter effect refers to the inspection performed by only reducing the amount of light. In the inspection of the ND filter effect, by comparing the result with the reference inspection in the above-mentioned step S11, information on the influence of the amount of light on the visual function of the subject can be obtained. As an example of the ND filter effect, there is a so-called light-shielding effect by sunglasses. Sunglasses referred to here mean glasses that have lenses that cut off all wavelengths (non-specific wavelengths) equally in order to reduce glare.

The CPU 14 uses the optotype determination unit 21 to sequentially display on the monitor 19 the optotypes including the circular region of interest used in the reference inspection described in step S11 , for example, with a luminance of 50%. Specifically, with regard to each visual mark (A-0, B-0, C-0, D-0) described with reference to FIG. 6, As shown in FIG. 7 , the optotype determination unit 21 presents A-N1 , B-N1 , C-N1 , and D-N1 with the luminance of 50% sequentially on the monitor 19 . The subject performs the same determination as in step S11. After the inspection of the ND filter effect is completed, the CPU 14 memorizes the optotype whose brightness of the circular attention part is darker than the optotype judged to be "perceived glare" as the inspection result in the inspection result storage unit 22, and proceeds to step S13 .

In addition, the optotype determination unit 21, for example, simultaneously displays on the monitor 19 four attention parts with different luminances of A-N1, B-N1, C-N1, and D-N1, and the examinee compares the four attention parts to make a comparison. Judgment is also possible. Next, the optotype determination unit 21 may display the determination results by the subject on the monitor 19 in a list.

In step S13, the CPU 14 checks the effect of the color filter. The inspection of the color filter effect refers to an inspection performed by changing the spectral characteristics of the monitor 19 . In the inspection of the color filter effect, by comparing the result with the reference inspection in the above-mentioned step S11, it is possible to obtain the first influence on the influence of the light amount on the subject's visual function, and the first influence on the color filter effect. The information of the second influence expressed by the influence of the stimulus value combination of the stimulus. As an example of the color filter effect, there is an effect caused by glasses having so-called colored lenses. The colored lens referred to here means an optical lens for eyeglasses having a spectral transmittance that cuts off a specific wavelength.

The CPU 14 uses the optotype determination unit 21 to sequentially display optotypes with different combinations of stimulus values of the color stimuli on the monitor 19 with respect to the optotypes including the circular attention part used in the reference test described in step S11. . For example, the optotype determination unit 21, for each optotype (A-0, B- 0, C-0, D-0), as shown in Figure 8, the color stimulus value of R is presented on the monitor 19 as 50% A-C1, B-C1, C-C1, D-C1 in sequence. Again, as shown in Figure 8, the optotype determination unit 21 presents the color stimulus value of G as 50% of A-C2, B-C2, C-C2, and D-C2 in sequence, and then presents the color stimulus value of B as 50%. A-C3, B-C3, C-C3, and D-C3 with a value of 50% are displayed on the monitor 19 in sequence. In addition, each optotype is blue when the stimulus value of R is 50%, red when the stimulus value of G is 50%, and yellow when the stimulus value of B is 50%. The subject performs the same determination as in steps S11 and S12. After the inspection of the color filter effect is completed, the CPU 14 memorizes the optotypes whose brightness of the circular attention part is darker than the optotypes judged to be "glare feeling" as the inspection results in the inspection result storage unit 22 respectively, and proceeds to step S14. In addition, in step S13, since the inspection is performed using three patterns of optotypes with different combinations of stimulus values of color stimuli, there are also three types of inspection results. In addition, the test results of the three types are different results due to the visual function of the subjects.

Furthermore, for example, the optotype determining unit 21 may simultaneously display a plurality of attention parts of different colors on the monitor 19, change the brightness of each attention part, and the subject may judge the brightness of each color. In addition, it is also possible to present the not-presented part of the attention part in gray.

In step S14, the CPU 14 checks the size of the Randall ring B. In this test, in the visual function test to be performed later, the test of the size of Randall's ring B is selected so that the subject can easily recognize the direction of the defect.

The CPU 14 sequentially displays the optotypes having the Randall circle B on the monitor 19 through the optotype determination unit 21 . In this embodiment, as a For example, the optotype determination unit 21 sequentially changes the size of the Randall circle B and displays it on the monitor 19 . For example, as shown in FIG. 9 , the optotype determination unit 21 sequentially changes the size of Randall's circle B presented in a certain background in the order of a-S, b-S, c-S, and d-S. The subjects viewed from a position at a fixed distance from the optotype, and judged the size of the Del ring B at which the direction of the defect can be easily recognized. After the size check of Randall's ring B is completed, the CPU 14 memorizes the result in the check result storage unit 22, and proceeds to step S15.

In step S15 , the CPU 14 performs a benchmark check using the Randall circle B. The reference inspection is an inspection used as an inspection reference for obtaining information on the optical member for correcting the visual function of the subject. The reference inspection in step S15 is an inspection for comparison between the inspection of the ND filter effect in step S17 described later and the inspection of the color filter effect in step S18.

The CPU 14 sequentially displays the Randall rings B of the size determined in step S14 on the monitor 19 through the optotype determination unit 21 . In the present embodiment, as an example, the optotype determination unit 21 sequentially changes the brightness of the Randall ring B from a bright state to a dark state, and displays it on the monitor 19 . For example, as shown in FIG. 10 , the optotype determination unit 21 changes the brightness of Randall's ring B presented in a certain background to dark in the order of a-01, b-01, c-01, and d-01. status. The subjects watched from a position at a fixed distance from the visual target, and judged the visibility. After the reference inspection is completed, the CPU 14 stores the optotype whose brightness of Randall's ring B is brighter than the optotype judged as "unrecognizable" in the inspection result storage unit 22 as the inspection result, and proceeds to step S16.

In addition, the CPU 14 displays, for example, the brightness of the Randall ring B judged to be "invisible" and the brightness of the Randle ring B judged to be "visible". In the vicinity of the critical threshold between the luminances of del ring B, the contrast can be changed by the simple/variable up-and-down method. Next, the CPU 14 calculates the folded-back average value of the stimulus value, and may determine the luminance contrast value and the luminance average value using the calculated average value.

In step S16 , the CPU 14 adds a ring-shaped glare portion to the outside of the Randall ring B to perform a reference check. The reference inspection is an inspection used as an inspection reference for obtaining information on the optical member for correcting the visual function of the subject. The reference check in step S16 is the same as the check in step S15 described above, and is a check for comparison between the check of the ND filter effect in step S17 described later and the check of the color filter effect in step S18.

The CPU 14 sequentially displays on the monitor 19 the optotype including the Randall ring B described in FIG. At this time, the optotype determination unit 21 keeps the luminance of the glare portion constant, but sequentially changes the luminance of the Randall ring B from a bright state to a dark state. In the embodiment, the optotype determination unit 21, for example, as shown in FIG. 11 , sets the brightness of Randall's ring B by a-02, b-02, c The order of -02 and d-02 changes to a dark state in sequence. The subjects watched from a position at a fixed distance from the visual target, and judged the visibility. General visibility will be deteriorated by adding glare parts. This reduction in visibility is caused by the disabling glare. Disabling glare is a state in which the contrast of the retinal image decreases due to scattered light generated in the eye, resulting in reduced visual function. After the benchmark inspection is completed, the CPU 14 stores the optotype whose brightness of Randall's ring B is brighter than the optotype judged to be "unrecognizable" as the inspection result in the inspection result storage unit 22, and proceeds to step S17.

In step S17, the CPU 14 checks the effect of the ND filter in the same manner as in step S12 described above.

The CPU 14 uses the optotype determination unit 21 to sequentially display, for example, the brightness as 50% with respect to the optotype including the Randall ring B used in the reference inspection described in step S16 and the ring-shaped glare portion arranged outside it. on monitor 19. Specifically, the optotype determination unit 21 sets the brightness as 50% of the a -N1, b-N1, c-N1, d-N1 are prompted in sequence. The subject performs the same determination as in steps S15 and S16. After the inspection of the ND filter effect is completed, the CPU 14 memorizes the optotype whose brightness of Randall's ring B is brighter than the optotype determined to be "unrecognizable" as the inspection result in the inspection result storage unit 22, and proceeds to step S18. .

In step S18, the CPU 14 checks the effect of the color filter in the same manner as in step S13 described above.

The CPU 14 uses the optotype determination unit 21 to compare the optotype including Randall's ring B and the annular glare portion arranged outside it, for example, by combining the stimulus values of the color stimuli with respect to the reference test described in step S16. They are sequentially displayed on the monitor 19 as different ones. For example, the optotype determining unit 21 sets the color stimulus value of R as 50% for each optotype (a-02, b-02, c-02, d-02) described using FIG. a-C1, b-C1, c-C1, and d-C1 are displayed in sequence. Next, as shown in FIG. 13 , the optotype determination unit 21 sequentially presents a-C2, b-C2, c-C2, and d-C2 with the color stimulus value of G as 50%, and then presents the color stimulus value of B as 50%. Value 50% as a-C3, b-C3, c-C3, d- C3 prompts in sequence. The subject performs the same determination as steps S15 to S17. After the inspection of the color filter effect is completed, the CPU 14 memorizes the optotypes whose brightness is brighter than the Randall ring B compared with the optotypes judged to be "unrecognizable" as the inspection results in the inspection result storage unit 22, and ends the viewing function. Check, and go to step S2 shown in FIG. 4 .

However, the visual function test described so far is just an example, and it is not limited to this example. For example, among the visibility inspection assumed to be discomfort glare and the visibility inspection assumed to be disability glare, either configuration may be performed, or configurations may be inserted and replaced in order. In addition, in the visibility inspection assuming discomfort glare and the visibility inspection assuming disability glare, although the example of performing the inspection of ND filter effect and the inspection of color filter effect is exemplified, only any One configuration is also possible.

Also, for example, in the visibility test assuming disability glare, although an optotype including Randall's ring B and a ring-shaped glare part arranged outside it are exemplified, the glare part is in a shape other than a ring, and a circle Combinations of plural figures such as rectangles or rectangles are also possible. For example, the optotype determination unit 21 may determine the shape of the glare portion in accordance with the purpose of the visibility check such as "easy to read characters" or "easy to see the eye-catching person from a complicated background". At this time, it is preferable that the test result storage unit 22 stores shape data indicating the shapes of the different glare parts in advance, and the optotype determination unit 21 preferably uses the shape data to determine the shape of the glare parts according to the purpose of the visibility test.

In addition, instead of displaying the disability glare on the monitor 19 together with the Randall ring B, one or more pluralities such as incandescent lamps and LED lighting are used. A light source, or at least one light source and one or a plurality of reflectors that reflect the light from the light source may be implemented. For example, one or more light sources are arranged at adjustable positions with respect to the monitor 19, and the optotype determination unit 21 determines the position and brightness of the light source that is turned on as a glare portion, the monitor 19, etc., according to the purpose of visibility inspection. For example, a light source capable of outputting high luminance is used to assume visibility in a sunlight environment or a nighttime headlight environment.

In step S2 shown in FIG. 4 , the CPU 14 performs analysis using the CA map through the analysis unit 23 . The CA diagram is a two-dimensional evaluation diagram of visibility with the vertical axis as the luminance contrast value (Contrast) and the horizontal axis as the average luminance (Average Luminance). Tie. The inventors have disclosed in detail about the CA map in Japanese Patent No. 3963299.

The luminance contrast value is a value indicating the contrast between the luminance of the attention part of the visual target and the luminance of the background part. In the optotype shown in FIG. 2 , the value representing the brightness contrast between the circular portion of interest and the background portion is equivalent to the brightness contrast value. On the other hand, in the optotype shown in FIG. 3 , as described above, Randall's ring B is the attention part, and the outside of Randall's ring B and the inside of the ring-shaped glare part are background parts. In addition, the average luminance refers to a value representing the average luminance of an optotype including a notable portion and a background portion. In this embodiment, a logarithmic luminance average is used as an example of a luminance average. In addition, the luminance contrast value and the luminance average value may be calculated by any calculation method.

In addition, in the visual function inspection of step S1 (in more detail, from steps S11 to S13, S15 to S18 in FIG. 5), the luminance contrast value, luminance At least one different optotype of the combination of the average value and the stimulus value of the color stimulus of the target was sequentially presented to the subject. In addition, the optotypes used in step S11 and step S12 are optotypes with different luminance contrast values and luminance average values. The same applies to steps S16 and S17. In addition, in the visual function test of step S1, in step S13 and step S18, after sequentially presenting visual targets with the same combination of stimulus values of color stimuli to the subject, the visual targets will be compared with the previously presented visual targets. Optotypes with different combinations of color stimuli and stimulus values were sequentially presented to the subjects.

In addition, as a modified example of the visual performance test described above, in the test of the ND filter effect, the luminance is not limited to the exemplified 50%, but a configuration in which multiple steps are changed for the test may be used. Also, any combination of stimulus values of color stimuli can be used in the inspection of the color filter effect. In addition, the order of presentation of the visual targets may be a change from a large state to a small state of the luminance contrast value, or may be a state from a small state to a large luminance contrast value. In addition, in the visual performance inspection of step S1, although an example of performing inspections in the order of the reference inspection, the inspection of the ND filter effect, and the inspection of the color filter effect has been illustrated, the luminance contrast value is fixed, and the luminance contrast value is fixed. -0, A-N1 of FIG. 7, A-C1, A-C2, A-C3 of FIG. At this time, in a state where the luminance contrast value is fixed, inspections of reference, ND filter effect, and color filter effect (three types) are performed. Furthermore, it is also possible to sequentially present to the subject an optotype in which the combination of the luminance contrast value, the luminance average value, and the stimulus value of the color stimulus of the target is randomly changed.

In the analysis section 23 in step S2, at first, based on the visual function inspection of step S1 (in more detail, steps S11, S12, S13, S15 to S15 of FIG. From the result of S18), calculate the luminance contrast value and luminance average value, and mark them in the CA diagram. Specifically, the analysis unit 23 creates a luminance image of the optotype, and stores it in the test result storage unit 22 as a result of the visual function test. Next, the analysis unit 23 calculates the brightness contrast value and the brightness average value after performing convolution operation on the brightness image using a matrix. The detailed calculation has been disclosed in Japanese Patent No. 3963299, so it is omitted here.

FIG. 14 shows a CA diagram based on the results of steps S11 and S12 in FIG. 5 . The point P1 marks the result of the benchmark check in step S11. Point P1 indicates the point at which the subject does not perceive glare when the brightness of the circular attention part is sequentially brightened. After marking this point P1, determine the critical line L1 in the CA diagram. The critical line L1 is a predetermined straight line passing through the point P1, and is determined by means of experiments and calculations. As a basis for determining the critical line L1, there is, for example, a study reported in the 2015 Architectural Institute of Japan Conference Academic Lecture Summary Collection (Kanto) 40200. The same applies to the subsequent critical lines. Next, in FIG. 14 , the area below the critical line L1 of the CA chart is the area where the subject has discernment, and the area above the critical line L1 is the area where the subject has no discernment.

Point P2 is marked with the result of checking the ND filter effect in step S12. Point P2 indicates that the examinee does not perceive glare when the brightness of the circular attention portion is sequentially increased in the inspection of the filter effect in step ND in step S12. In addition, the point P1 and the point P2 exist on the straight line L01 as shown in FIG. 14 . After marking this point P2, determine the critical line L2 in the CA diagram. The critical line L2 can be determined by moving the critical line L1 through the point P2 in parallel. In addition, when determining the critical line L2, it is also possible to correct the inclination or shape of the critical line L1 in whole or in part in accordance with the parallel movement of the critical line L1. Can. Next, in FIG. 14 , the area below the critical line L2 of the CA diagram is the area where the subject has discernment, and the area above the critical line L2 is the area where the subject has no discernment. As shown in FIG. 14 , after comparing with the benchmark inspection using the visual mark including the circular attention part in step S11, in the result of the inspection of the ND filter effect in step S12, the subject has a discernible area. Changes, the subject's discrimination changes due to the ND filter effect. In addition, the arrow shown in FIG. 14 shows the example of the improvement of the subject's discrimination.

FIG. 15 shows a CA diagram based on the result of step S13 in addition to steps S11 and S12 in FIG. 5 . Point P1, point P2, critical line L1, and critical line L2 are the same as in FIG. 14 . Point P3 is marked with the result with the highest effect among the inspection results of the color filter effect in step S13. In step S13, inspection is performed using three types of optotypes having different combinations of stimulus values of color stimuli. At this time, the above-mentioned point P3 is marked based on the inspection result of the optotype with the highest effect, that is, the brightest brightness of the attention part that experiences glare. Point P3 represents the point where the examinee does not perceive glare when the brightness of the circular notable portion is sequentially brightened in the inspection of the color filter effect in step S13. In addition, the point P3 also exists on the straight line L01 like the points P1 and P2. After marking the point P3, the critical line L3 is determined in the CA diagram. The critical line L3 can be determined by moving the critical line L1 through the point P3 in parallel. Also, when determining the critical line L3, the inclination or shape of the critical line L1 may be wholly or partially corrected in accordance with the parallel movement of the critical line L1. Next, in Fig. 15, the area below the critical line L3 of the CA diagram is the area where the subject has discernment, and the area above the critical line L3 is the area where the subject has discernment. or non-identifiable areas. As shown in FIG. 15 , after comparing with the benchmark inspection using the visual mark including the circular attention part in step S11, in the inspection result of the color filter effect in step S13, the subject has a discernible area. Changes, due to the color filter effect, the subject's discrimination changes. In addition, the arrow shown in FIG. 15 shows the example of the improvement of the subject's discrimination.

FIG. 16 shows a CA diagram based on the results of steps S15 and S16 in FIG. 5 . The point R1 is marked with the result of the benchmark check using the Randall circle B in step S15. Point R1 represents the critical point where the subject cannot recognize the visual target when the brightness of Randall's ring B is sequentially dimmed. After marking the point R1, determine the critical line L4 in the CA diagram. As a basis for determining the critical line L4, there is, for example, a study reported in the 2015 Architectural Institute of Japan Conference Summary of Academic Lectures (Kanto) 40238. Next, in FIG. 16 , the area below the critical line L4 in the CA diagram is the area where the subject has discernment, and the area above the critical line L4 is the area where the subject has no discernment.

The point R2 is marked with the result of the reference check of the additional ring-shaped glare portion in step S16. Point R2 indicates the critical point where the subject cannot recognize the visual mark when the brightness of Randall's ring B is sequentially dimmed in the examination of step S16. In addition, the point R1 and the point R2 exist on the straight line L02 as shown in FIG. 16 . After marking this point R2, determine the critical line L5 in the CA diagram. The critical line L5 can be determined by making the critical line L4 pass through the point R2 by moving in parallel. Also when determining the critical line L5, the inclination or shape of the critical line L4 may be corrected in whole or in part in accordance with the parallel movement of the critical line L4. Next, in FIG. 16, the area below the critical line L5 of the CA diagram It is the area where the examinee has discrimination, and the area above the critical line L5 is the area where the examinee has no discrimination. As shown in FIG. 16 , compared with the benchmark test including Randall’s circle B in step S15, in the result of the benchmark test in which the ring-shaped glare portion was added in step S16, the area that the examinee could identify decreased. , the subject's discrimination deteriorated.

FIG. 17 shows a CA diagram based on the result of step S17 in addition to steps S15 and S16 in FIG. 5 . Point R1, point R2, critical line L4, and critical line L5 are the same as in FIG. 16 . Point R3 represents the critical point where the subject cannot recognize the visual target when the brightness of Randall's circle B is sequentially dimmed in the inspection of the ND filter effect in step S17. In addition, the point R3 also exists on the straight line L02 as shown in FIG. 17 . After marking this point R3, determine the critical line L6 in the CA diagram. The critical line L6 can be determined by making the critical line L4 pass through the point R3 by moving in parallel. Also, when determining the critical line L6, the inclination or the shape of the critical line L4 may be wholly or partially corrected in accordance with the parallel movement of the critical line L4. Next, in FIG. 17 , the region below the critical line L6 in the CA diagram is the region where the subject has discernment, and the region above the critical line L6 is the region where the subject has no discernment. As shown in FIG. 17 , after contrasting with the benchmark inspection using the visual mark including the additional ring-shaped glare portion in step S16, in the result of the inspection of the ND filter effect in step S17, the examinee has a discernible The area changes, and the subject's visibility changes due to the ND filter effect. In addition, the arrow shown in FIG. 17 shows the example of the improvement of the subject's discrimination.

FIG. 18 shows a CA diagram based on the result of step S18 in addition to steps S15 to S17 of FIG. 5 . Point R1 , point R2 , point R3 , critical line L4 , critical line L5 , and critical line L6 are the same as those in FIG. 17 . The point R4 is marked with the result with the highest effect among the inspection results of the color filter effect in step S18. In step S18, inspection is performed using three types of optotypes having different combinations of stimulus values of color stimuli. Wherein, the above-mentioned point R4 is marked based on the inspection result with the highest effect, that is, the inspection result based on the lowest (dark) brightness of the Randall's ring B that can be identified. Point R4 represents the critical point where the subject cannot recognize the visual target when the brightness of the Randall ring B is sequentially dimmed in the inspection of the color filter effect in step S18. In addition, a point R4 also exists on the straight line L0 ₂ as shown in FIG. 18 . After marking this point R4, determine the critical line L7 in the CA diagram. The critical line L7 can be determined by making the critical line L4 pass through the point R4 by moving in parallel. Also, when determining the critical line L7, the inclination or the shape of the critical line L4 may be wholly or partially corrected in accordance with the parallel movement of the critical line L4. Next, in FIG. 18 , the area below the critical line L7 in the CA diagram is the area where the subject has discernment, and the area above the critical line L7 is the area where the subject has no discernment. As shown in FIG. 18 , compared with the reference test using the visual mark including the additional ring-shaped glare part in step S11, in the result of the color filter effect test in step S18, the examinee has a discernible The area changes, and the subject's visibility changes due to the color filter effect. In addition, the arrows shown in FIG. 18 indicate examples of improvement of the subject's visibility.

The CA charts described with reference to FIGS. 14 to 18 can also be displayed on the monitor 19 through the input/output I/F 16 by the analyzer 23 . By displaying such a CA chart on the monitor 19, the result of the visual function test can be visually presented to the examiner or the subject.

In step S3, CPU14 calculates an optical characteristic by the optical characteristic calculation part 24. As optical properties, there are X value, Y value, Z value, L*a*b*, and the like.

In the present embodiment, as described above, optical characteristics of lenses for eyeglasses are required as optical members for correcting the subject's visual function. The X value, Y value, and Z value are one of the colorimetric system prescribed by CIE (International Commission on Illumination), and are used as one of the evaluation values indicating the optical characteristics of the optical lens in this document.

The optical characteristic calculating unit 24 first selects an optotype to be used as a basis for calculating the optical characteristic based on the result of the visual performance test in step S1. As mentioned above, in the visual function inspection of step S1, the inspection results are stored in the inspection result storage unit 22 in the seven processes of step S11, step S12, step S13, step S15, step S16, step S17, and step S18. The selection of the test results for the calculation of the optical properties can be done in any manner. For example, the optical characteristic calculation unit 24 may select the area having the greatest visibility in the CA diagrams described in FIGS. 14 to 18 . Afterwards, the optical characteristic calculation unit 24 may also select the test result according to the examinee's purpose of use. Hereinafter, as an example, in the inspection of the color filter effect in step S18, the case where the optical characteristics are calculated based on the optotype when the stimulus value of B is 50% (yellow) will be described.

After selecting the target to be used as the basis for calculation of the optical properties, the optical property calculation unit 24 calculates the spectral distribution of the light source corresponding to the target. Here, the light source refers to a person who generates light, not only light bulbs such as lamps and suns, but also reflected light. In this embodiment, the monitor 19 is equivalent to a light The source, which corresponds to the spectral distribution of the light source of the visual target, can be obtained from the spectral distribution of the monitor 19 when the visual target is presented.

Fig. 19 shows the monitor when the stimulus value of B is set as 50% (yellow) as the optotype when the test result is stored in the optotype of the test result storage unit 22 in the inspection of the color filter effect in step S18. 19 spectral distribution (hereinafter referred to as spectral distribution A). In addition, FIG. 20 shows the spectral distribution (hereinafter referred to as spectral distribution B) of the light source that dominates in the environment that the subject wants to see. In addition, the spectral distribution of the light source is shown as an example in FIG. 20 . In addition, FIG. 21 shows a graph describing two spectral distributions. In addition, in FIGS. 19 to 21 , each horizontal axis represents the wavelength of light, and each vertical axis represents the spectral radiance or spectral radiance at each wavelength.

The optical characteristic calculation unit 24 calculates the spectral transmittance for converting the spectral distribution B into the optical distribution A. Here, the spectral transmittance represents the ratio of the spectral density of the transmitted light beam to the spectral density of the incident light beam. The optical characteristic calculation unit 24 calculates the spectral transmittance for each light wavelength by obtaining (the numerical value on the vertical axis of the spectral distribution A)/(the numerical value on the vertical axis of the spectral distribution B) for each light wavelength at predetermined intervals. In addition, the wavelength intervals of the light for calculating the spectral transmittance may be equal intervals or non-equal intervals. For example, the subject may calculate detailed spectral transmittance at narrow wavelength intervals for important wavelength bands, and calculate approximate spectral transmittance at wide wavelength intervals for other wavelength bands. FIG. 22 shows an example of the calculated spectral transmittance. In addition, the upper limit of the spectral transmittance was set to 1.00, and when the calculated spectral transmittance exceeded 1.00, the calculation result was replaced with 1.00. Next, the optical characteristic calculating unit 24 calculates an X value, a Y value, and a Z value corresponding to the spectral transmittance.

In addition, when calculating the wavelength-dependent characteristics of the spectral transmittance of the optical member used for the visual function of the subject, the optical characteristic calculation unit 24 sets the wavelength region to be the value of each light of R, G, and B corresponding to the visual target. On the premise that the three wavelength regions of the main emission wavelength region are constituted, the average value of each transmittance in the three wavelength regions is defined as the same numerical value as the stimulus value of R, G, and B of the target. Processing is also possible.

After the CPU 14 calculates the X value, the Y value, and the Z value by the optical characteristic calculation unit 24 , a series of processing is ended.

As described above, according to the first embodiment, the luminance contrast value of the luminance of the attention part and the luminance of the background part, the luminance average value of the index including the attention part and the background part, and the stimulus value of the color stimulus of the visual target are compared. In the combination of at least one different visual mark, the subject is sequentially prompted to perform a visual function test. Based on the test results, in the coordinate system showing the correlation between the brightness contrast value and the brightness average value, each color stimulus The combination of stimulus values was used to obtain the critical point between the subject's discriminative area and the non-discriminative area. Therefore, since the relationship between the optical characteristics of the optical member and the visibility can be estimated, it is possible to realize the inspection of visual functions in consideration of various light environments including the inspection.

Moreover, according to the first embodiment, the optotype is displayed on the display device. Therefore, the subject can perform visual function examination in a relatively short period of time without using a plurality of optical lenses.

<Second Embodiment>

Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. this In addition, only the parts that are different from the above-mentioned first embodiment will be described below, and the description of the parts that are the same as the first embodiment will be omitted.

The visual function inspection system of the second embodiment has the same configuration as the visual function inspection system of the first embodiment. However, the visual performance testing system of the second embodiment acquires target information on the visibility of the subject, calculates target values based on the acquired target information, and calculates optical characteristics based on the calculated target values.

The operation of the visual function inspection system of this embodiment will be described with reference to the flowchart shown in FIG. 23 .

In step S21, CPU14 controls each part and performs visual function inspection similarly to the above-mentioned step S1 of FIG.

In step S22, CPU14 acquires object information through input/output I/F18. The target information is information indicating light sources in an environment surrounded by the subject. Specifically, it can be imagined that when the subject wants to discern, images of scenes and situations in which the subject feels a problem with discernment or presumably senses a problem are photographed. Scenes and situations in which the subject feels problems with discernment refer to, for example, those in which the subject feels glare or darkness in daily life, difficult to recognize attention parts such as guide signs, and difficult to reach pillars or stairs, etc. Pay attention to the scene and situation such as the three-dimensional effect of the part. Similarly, the scene and situation in which the subject infers that he or she feels a problem with discrimination refers to a scene or situation that can be inferred by a researcher or a medical practitioner based on an experiment or what the subject heard. In any case, by obtaining images of these scenes and situations taken in advance as target information, it is possible to calculate the Each subject agrees with the optical characteristics of the optical components of different visual functions. In addition, any image can be taken by any method, but in view of the use of the above-mentioned CA map, it is preferable to convert or approximate the luminance image (for example, RGB image, YCbCr image, etc.)

Also, other than the above-mentioned images, any information may be used as long as it indicates information on light sources in the environment surrounded by the subject. For example, it can be thought of as an evaluation value or numerical value indicating the scene and situation in which the subject perceives a problem or presumably perceives a problem when the subject intends to identify it. The evaluation value indicating the scene and situation in which the subject feels a problem with recognition refers to, for example, the subject's daily life, feeling that glare or darkness, guide signs, etc. The illuminance or luminance measured in scenes and situations such as the three-dimensional effect of attention parts such as stairs. Similarly, the evaluation value indicating the scene and situation in which the subject infers the problem of discernment perception refers to the scene and situation that the researcher or medical practitioner can infer based on the experiment or the content heard by the subject. The illuminance or luminance measured in. In any case, by obtaining the evaluation values of these scenes and situations measured in advance as target information, it is possible to calculate the optical characteristics of the optical member corresponding to the different visual functions for each subject. In addition, any evaluation value may be measured or calculated in this way, but it is preferable to convert or approximate the luminance contrast value and luminance average value (for example, illuminance, luminance, etc.) in view of using the above-mentioned CA map.

In step S23 , the CPU 14 performs analysis using the CA map through the analysis unit 23 . The details of the CA map are the same as those of the first embodiment.

The analysis unit 23 first bases on the target information obtained in step S22 to calculate the target value. The target value is a luminance contrast value and a luminance average value corresponding to the target information. When the target information is an image, the analysis unit 23 converts or approximates the image to a luminance image. For example, when the target information is an RGB image, the analyzing unit 23 converts the image of the RGB colorimetric system into an image of the XYZ colorimetric system, and uses the Y image as the luminance image. Next, the analysis unit 23 sets a notable part and a background part in the luminance image, and calculates a luminance contrast value and a luminance average value based on the luminance values of these regions.

On the other hand, when the target information is an evaluation value, the analysis unit 23 converts or approximates the evaluation value into a luminance contrast value or a luminance average value. For example, when the target information is illuminance, the analysis unit 23 converts the illuminance into luminance by a known formula, and uses the ratio between the luminance of the attention part and the luminance of the background part as the brightness contrast value, and compares the attention part and the background The average value of the luminances of the parts was taken as the average luminance.

FIG. 24 shows a CA diagram based on the result of the visual function test when the visibility test assuming uncomfortable glare is performed in step S21. Point P1, point P2, point P3, critical line L1, critical line L2, and critical line L3 are the same as those in FIG. 15 of the first embodiment. The point C1 is marked on the CA chart with the above-mentioned target value (luminance contrast value and luminance average value). A point C1 represents a discernible point desired by the subject on the CA map.

On the other hand, FIG. 25 shows another CA diagram based on the result of the visual function test when the visibility test assuming disability glare is performed in step S21. Point R1, point R2, point R4, critical line L4, critical line L5, and critical line L7 are the same as those in FIG. 16 of the first embodiment. Point D1 is marked on the CA chart with the above-mentioned target values (luminance contrast value and luminance average value). point D1 table On the CA diagram, the discriminative point desired by the subject is shown.

In step S24, CPU14 calculates an optical characteristic (for example, X value, Y value, Z value) by the optical characteristic calculation part 24.

When the optical characteristic calculation unit 24 performs a visibility test assuming uncomfortable glare in step S21, as shown in FIG. The critical line L3 moves the point C1 to the point P4 in the negative direction of the horizontal axis on the CA diagram so as to be included in the discernible region. This point P4 is a threshold for including the point C1 corresponding to the target value in the region where the subject has discernibility. Next, the optical characteristic calculating unit 24 obtains the optical characteristic from the point P4. Specifically, first calculate the logarithmic luminance average difference T between point P4 and point C1, that is, the ratio of the luminance average value, by multiplying the above-mentioned ratio by the spectral distribution of the target corresponding to point P3, the equivalent The spectral distribution of the visual target at point P4. Thereafter, the optical characteristics are obtained from the spectral distribution corresponding to the point P4 by the same process as that described in the first embodiment.

When the optical characteristic calculation unit 24 performs a visibility test assuming disability glare in step S21, as shown in FIG. The critical line L9 is determined in the CA diagram so as to be included in the distinguishable region. The critical line L9 can be determined by moving the critical line L4 described in the first embodiment in parallel so that the point D1 is included in the visible region. Next, as shown in FIG. 25 , the optical characteristic calculation unit 24 obtains a critical line L9 and a point R5 intersecting the straight line L0 ₂ described in the first embodiment. This point R5 is a threshold for including the point D1 corresponding to the target value in the region where the subject has discernibility. Next, the optical characteristic calculating unit 24 obtains the optical characteristic from the point R5. Specifically, the ratio of the average luminance values between point R5 and point R4 is first calculated, and the spectral distribution of the target corresponding to point R4 is obtained by multiplying the ratio by the spectral distribution of the target corresponding to point R4. Thereafter, the optical characteristics can be obtained from the spectral distribution corresponding to the point R5 by the same process as that described in the first embodiment.

Next, the optical characteristic calculation unit 24 calculates the X value, the Y value, and the Z value for the spectral distribution of the light source similarly to the first embodiment, and then ends the series of processes.

As explained above, according to the second embodiment, the information indicating the light source in the environment surrounding the subject is acquired as the target information related to the subject's visibility, and the target in the coordinate system is calculated based on the target information value. Next, the optical characteristics of the optical member are calculated based on the inspection results of the visual performance inspection and the calculated target values. Therefore, it is possible to correct the visual function of the subject by marking the conditions of the object that the subject wants to identify in real life in the CA diagram for analysis, that is, to make the subject able to identify the object to be identified The optical properties of the optical components are calculated in the form of objects.

In addition, in each of the above-mentioned embodiments, it is considered that there are various possibilities for the analysis in the CA diagram. For example, the examinee obtains the spectral distribution of the dominant light source in an environment where optical components such as optical lenses are used, and by using them for calculation of optical characteristics of the optical components, it is possible to simulate the visibility in the use environment. In addition, since a CA map can be created for each optical characteristic of an optical member such as an optical lens, various simulations at the time of use are also possible.

Again, each visual mark shown in each of the above-mentioned embodiments is only one example, the present invention is not limited to this example. High-precision inspection can be performed by using the used optotype according to the purpose. For example, in each of the above-mentioned embodiments, a circular part and a Randall ring are illustrated as the attention part of the optotype, but other shapes, characters, emoticons, etc. may be used, and Gabor optotypes may also be used. And pattern visual standard etc. Next, the optotype determination unit 21 determines the shape of the attention part according to the purpose of the visibility check such as "easy to read the characters" or "easy to see the attention person from the complicated background". For example, the optotype determination unit 21 determines that optotypes such as Randall's ring and hiragana are preferable when the purpose of the visibility check is "easily deciphering characters". On the other hand, the optotype determining unit 21 may determine an optotype such as a circular optotype, a Gabor optotype, or a striae optotype when the purpose of the visibility check is "easy to see the attention object from a complicated background".

Examples of optotypes used for each inspection purpose are shown in Table 1.

However, when the subject is a child or a disabled person accompanied by mental retardation, the relationship between the inspection target and the optotype is different from the above, and it is better to use the animal optotype or Teller Acuity Cards II.

In addition, it is preferable that the test result storage unit 22 stores shape data indicating shapes of different glare parts in advance, and it is preferable that the optotype determination unit 21 determines the shape of the notable part according to the purpose of the visibility test.

In addition, in each of the above-mentioned embodiments, a liquid crystal display device and an organic EL display device were illustrated as specific examples of the monitor 19, but the present invention is not limited to these examples. If the spectral distribution is known or measurable, it can be arbitrary. For example, a display device having a light source (for example, Yellow) other than the three primary colors of RGB may also be used. Also, a backlight type display device, a self-luminous type display device, or a projection type display device may be used.

Moreover, in each of the above-mentioned embodiments, an optical lens was taken as an example of an optical member, but the present invention is not limited to this example. For example, it may be a magnifying glass type optical lens, and as an optical member for controlling the wavelength of light suitable for an individual, it may be a protective layer or a film for adjusting the amount of incident light from lighting, window glass, or the like. In addition, it may be a protective layer, a filter, or a film of the object itself, such as a lighting fixture, a display, and a window glass provided in a building or a vehicle. Furthermore, it can also be applied to building materials or coatings such as floors, walls, and ceilings.

In addition, in each of the above-mentioned embodiments, the visual function inspection system for obtaining information on the optical member for correcting the visual function of the subject is described, but the following applications are also possible.

For example, based on the visual functions described in the above-mentioned embodiments As a result of the inspection, a method of selecting an optical member that corrects the visual function of the subject from a plurality of optical members having different characteristics is effective as a specific aspect of the present invention. FIG. 26 is a flowchart showing an example of a method of selecting an optical member.

In each process from step S31 to step S33, the same processing as that in each process from step S1 to step S3 in the first embodiment is performed.

In step S34, the selection of an optical member is performed based on the optical characteristic calculated in step S33 (for example, X value, Y value, Z value, or L*a*b*). For example, regarding a plurality of optical members prepared in advance, a table corresponding to optical characteristics (for example, X value, Y value, and Z value) prepared in advance is referred to. Next, an optical member corresponding to the optical characteristic calculated in step S33 (for example, X value, Y value, Z value, or L*a*b*) or an optical characteristic close to it is selected.

By the selection method of the optical member described above, it is possible to select an optical member that corrects the visual function of the subject.

Furthermore, a method of manufacturing an optical member that corrects the visual function of a subject based on the results of the visual function test described in each of the above embodiments is effective as a specific aspect of the present invention. FIG. 27 shows a flowchart of an example of a method of manufacturing an optical member.

In each process from step S41 to step S43, the same processing as that in each process from step S1 to step S3 in the first embodiment is performed.

In step S44, the manufacturing conditions of an optical member are determined based on the optical characteristic (for example, X value, Y value, Z value) calculated in step S43, or the optical characteristic close to it.

In step S45, the optical member is manufactured according to the manufacturing conditions determined in step S44.

According to the manufacturing method of the optical member mentioned above, the optical member which corrects the visual function of a subject can be manufactured.

Furthermore, a method of manufacturing a display member that corrects the visual function of the subject based on the results of the visual function test described in each of the above embodiments is effective as a specific aspect of the present invention. Among them, display components can be thought of as various monitors of computers, monitors of smartphones, monitors of tablet PCs, monitors of TVs, monitors of enlarged readers (CCTV/Closed Circuit TV), head-mounted display etc. FIG. 28 is a flowchart showing an example of a method of manufacturing a display member.

In each process from step S51 to step S53, the same processing as that in each process from step S1 to step S3 in the first embodiment is performed.

In step S54, the manufacturing conditions of a display member are determined based on the optical characteristic (for example, X value, Y value, Z value) calculated in step S53, or the optical characteristic close to it.

In step S55, the display member is manufactured according to the manufacturing conditions determined in step S54.

According to the manufacturing method of the display member described above, it is possible to manufacture a display member that corrects the visual function of the subject.

Furthermore, a method of manufacturing a lighting device that corrects the visual function of a subject based on the results of the visual function test described in each of the above embodiments is effective as a specific aspect of the present invention. FIG. 29 shows a flowchart of an example of a method of manufacturing a lighting device.

In each process from step S61 to step S63, the same processing as that in each process from step S1 to step S3 in the first embodiment is performed.

In step S64, the manufacturing conditions of the lighting device are determined based on the optical characteristics (for example, X value, Y value, Z value) calculated in step S63 or optical characteristics close thereto.

In step S65, the lighting device is manufactured according to the manufacturing conditions determined in step S64.

According to the above method of manufacturing a lighting device, a lighting device that corrects the visual function of a subject can be manufactured.

In addition, in the above-mentioned flow charts of FIG. 26 to FIG. 29 , although it is illustrated that the same processing as that of the steps S1 to S3 of the first embodiment is performed, the optical characteristics (for example, X value, Y value, Z value, etc.) are calculated. ) as an example, but it may also be a configuration in which optical characteristics (for example, X value, Y value, and Z value) are calculated by performing the same processing as in steps S21 to S24 of the second embodiment.

In addition, in each of the above-mentioned embodiments, although the visual function inspection system constituted by the computer 11, the input device 18, and the monitor 19 is exemplified, the visual function inspection device in which each part in the above-mentioned embodiments is integrally manufactured is also a part of the present invention. Effective concrete form. Furthermore, an optical characteristic calculation device that calculates optical characteristics based on the results of the optical performance tests described in the above embodiments is also effective as a specific aspect of the present invention.

In addition, in each of the above-mentioned embodiments, an example in which a series of processing is completed within the visual function inspection system is shown, but it is also possible to divide the responsibility for each processing into a configuration. For example, as shown in Figure 30, to have computer 111 Each process may be divided into a visual function inspection system including the input device 118 and the monitor 119 and an optical characteristic calculation system including the computer 211 , the input device 218 and the monitor 219 . With such a configuration, for example, a medical institution or the like is provided with a visual function inspection system to perform only the visual function inspection, and a company specialized in analysis, etc. is equipped with an optical characteristic calculation system to perform analysis and calculation of optical characteristics.

The computer 111 in FIG. 30 includes a data reading unit 112 , a memory device 113 , a CPU 114 , a memory 115 , an input/output I/F 116 , a bus bar 117 , and each unit of the communication unit 101 . The configurations of the data reading unit 112, the memory device 113, the memory 115, the input/output I/F 116, and the bus bar 117 are respectively the same as those of the data reading unit 12, the memory device 13, and the memory 15 of FIG. 1 in the first embodiment. , input and output I/F16, and bus bar 17 are roughly the same. Each part of the computer 111 shown in FIG. 30 is collectively controlled by the CPU 114 . The communication unit 101 is a transmitting and receiving unit for wired or wireless communication between the computer 111 and an external device. The CPU 114 functions as the optotype determination unit 121 and the test result storage unit 122 by executing the visual function test program stored in the memory device 113 . Next, the optotype determination unit 121 and the test result storage unit 122 perform a visual function test in the same manner as step S1 in the first embodiment or step S21 in the second embodiment. Next, the result of the visual performance test is output from the communication unit 101 through the bus bar 117 and the input/output I/F 116 .

On the other hand, the computer 211 in FIG. 30 includes: a data reading unit 212 , a memory device 213 , a CPU 214 , a memory 215 , an input/output I/F 216 , a bus 217 , and each unit of the communication unit 201 . Data reading unit 212, memory device 213, memory 215, input/output I/F 216, confluence The configuration of each part of the row 217 is roughly the same as that of the data reading part 12, the memory device 13, the memory 15, the input/output I/F 16, and the bus bar 17 in FIG. 1 of the first embodiment. Each part of the computer 211 in FIG. 30 is collectively controlled by the CPU 214 . The communication unit 201 is a sending and receiving unit for wired or wireless communication between the computer 211 and an external device. The CPU 214 functions as the analysis unit 223 and the optical property calculation unit 224 by executing the optical property calculation program stored in the memory device 213 . Next, the analysis unit 223 and the optical characteristic calculation unit 224 perform the analysis of the CA diagram and the optical characteristics in the same manner as at least one of step S2, step S3 of the first embodiment, and step S22, step S23, and step S24 of the second embodiment. calculated. In addition, the analysis unit 223 and the optical characteristic calculation unit 224 obtain the result of the visual function test received by the communication unit 201 through the input/output I/F 216 and the bus bar 217, and perform CA based on the obtained result of the visual function test. Diagram analysis and calculation of optical properties.

In addition, each unit of the optotype determination unit 121 , the test result storage unit 122 , the analysis unit 223 , and the optical characteristic calculation unit 224 may be configured as hardware by dedicated circuits.

In addition, a visual performance inspection program or an optical characteristic calculation program is also effective as a specific aspect of the present invention. These programs may be stored in a computer-readable medium, stored in a server on the Web, or downloaded to a computer via the Internet.

In addition, the technology of each of the above-mentioned embodiments can also be assumed to be applicable to medical equipment or medical devices.

By the above detailed description, the characteristic points of the embodiment and Advantages should be clearly defined. This is for the characteristics and advantages of the above-mentioned embodiments without departing from the scope of the patent application and the spirit and scope of rights. In addition, all improvements and changes should be easily conceivable by those skilled in the art. Therefore, it is not intended that the scope of the inventive embodiments be limited to the aforementioned ranges, and appropriate modifications and equivalents included in the scope disclosed in the embodiments may be included.

11: computer

12: Data reading department

13: memory device

14:CPU

15: Memory

16: Input and output I/F

17: busbar

18: Input device

19: monitor

21: Visual Target Decision Department

22: Inspection result memory

23: Analysis Department

24:Optical characteristic calculation part

Claims (13)

A visual function testing system comprising: first shape information indicating mutually different plural shapes of attention parts included in an optotype by memory and/or indicating positions included in the aforementioned optotype at positions entering the subject's field of vision The memory unit of the second shape information of the mutually different plural shapes of the glare part, and the shape of the aforementioned attention part and/or the aforementioned glare part are determined based on the aforementioned first shape information and/or the aforementioned second shape information in accordance with the purpose of the visual function test Determining unit A1 composed of a determining unit of the shape; or a determining unit determined by a plurality of light sources, and at least one light source among the aforementioned plurality of light sources used as a glare part in visual function inspection and its position according to the purpose of visual function inspection Any one of the decision unit A2 that constitutes: the luminance contrast value of the luminance of the aforementioned attention part and the brightness of the background part, the luminance average value of the optotype including the aforementioned attention part and the aforementioned background part, and the stimulus value of the color stimulus of the optotype The combination of at least one different visual mark is sequentially presented to the visual function testing unit of the aforementioned subject; based on the inspection results of the aforementioned visual function testing unit, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value In this method, for each combination of stimulus values of the aforementioned color stimuli, the threshold between the subject's discriminative area and the non-discriminative area is obtained, thereby obtaining at least two critical analysis units. The visual function inspection system as described in Claim 1, which replaces the aforementioned visual function inspection unit; There is at least one difference that accepts a combination of the luminance contrast value of the luminance of the attention part and the luminance of the background part, the luminance average value of the target including the focus part and the background part, and the stimulus value of the color stimulus of the target The receiving unit for the results of the visual function test obtained by sequentially presenting the visual symbols to the subject. An optical characteristic calculation system comprising: a calculation unit for calculating the optical characteristics of an optical component for correcting the subject's visual function based on the inspection result of the visual function inspection system described in Claim 1 or Claim 2. A method for selecting an optical component is to select an optical component based on the aforementioned optical characteristics calculated by the optical characteristic calculation system described in Claim 3. A method of manufacturing an optical member, which manufactures an optical member based on the aforementioned optical characteristics calculated by the optical characteristic calculation system described in Claim 3. A method of manufacturing a display member, including: manufacturing an optical member based on the aforementioned optical characteristics calculated by the optical characteristic calculation system described in Claim 3. A method of manufacturing a lighting device, comprising: manufacturing The engineering of optical components. A device for testing visual function, comprising: first shape information representing mutually different plural shapes of attention parts included in an optotype by memory and/or indicating a position included in the aforementioned optotype at a position entering the subject's field of vision The memory unit of the second shape information of different plural shapes of the glare part, and the shape of the part of interest and/or the glare part are determined based on the first shape information and/or the second shape information according to the purpose of the visual function test Determination unit B1 composed of a determination unit of the shape; or a determination unit composed of at least one light source used as a glare part in the visual function inspection among the external multiple light sources and its position according to the purpose of the visual function inspection Any one of the part B2; the presenting part for presenting the aforementioned optotype to the aforementioned subject; performing the comparison of the luminance of the luminance of the aforementioned attention part and the brightness of the background part, and the brightness average value of the optotypes including the aforementioned attention part and the aforementioned background part , and at least one different optotype of the combination of the stimulus value of the color stimulus of the target is sequentially presented to the inspection part of the visual function test of the aforementioned prompting part; In the coordinate system related to the above-mentioned luminance average value, in the combination of the stimulus value of each of the above-mentioned color stimuli, the critical area between the above-mentioned subject with discrimination and the area without the above-mentioned discrimination is obtained, thereby Find at least two of the aforementioned critical analysis units. An optical characteristic calculation device, comprising: based on the description in Claim 8 A calculation unit that calculates the optical characteristics of the optical member for correcting the visual function of the subject based on the inspection result of the visual function inspection device. A method of visual function testing, comprising: using the first shape information indicating mutually different plural shapes of attention parts included in the visual target and/or indicating the position included in the visual target based on the position entering the subject's field of vision Determination process C1 consisting of the second shape information of the mutually different plural shapes of the glare part according to the purpose of visual function inspection to determine the shape of the aforementioned attention part and/or the determination process of the shape of the aforementioned glare part; At least one light source used as a glare part in the visual function inspection and its position is determined according to the purpose of the visual function inspection. Any one of the determination process C2 of the determination process composition; compare the luminance of the aforementioned attention part with the brightness of the background part Value, the luminance average value of the optotype including the aforementioned attention part and the aforementioned background part, and at least one different optotype of the combination of the stimulus value of the color stimulus of the optotype is sequentially presented to the subject's visual function inspection project; Based on the inspection results in the aforementioned visual function testing project, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in each combination of the stimulus values of the aforementioned color stimuli, it is determined that the subject has discrimination The criticality between the region and the region that does not have the aforementioned identifiability, so as to obtain at least two analytical projects of the aforementioned criticality. A method for calculating optical properties, comprising: based on the inspection results of the optical function inspection method described in claim 10, calculating the Calculation process of optical characteristics of optical components with visual function. A program for causing a computer to execute the following steps: represented by the first shape information based on the mutually different plural shapes representing the attention part included in the visual target and/or the position within the subject's field of vision included in the aforementioned Determination step D1 consisting of the second shape information of the mutually different plural shapes of the glare part in the visual target to determine the shape of the aforementioned attention part and/or the shape of the aforementioned glare part according to the purpose of visual function inspection; or by plural light sources Among them, at least one light source used as the glare part in the visual function test and its position are determined according to the purpose of the visual function test. Any one of the decision steps D2; The luminance contrast value, the luminance average value of the target including the aforementioned attention part and the aforementioned background part, and the combination of the stimulus value of the color stimulus of the target at least one different visual target are sequentially presented to the visual function of the subject. Inspection step: based on the inspection results of the aforementioned visual function inspection step, in the coordinate system representing the correlation between the aforementioned luminance contrast value and the aforementioned luminance average value, in the combination of the stimulus values of each aforementioned color stimulus, obtain the aforementioned subject's The threshold between the distinguishable area and the non-identifiable area is used to obtain at least two analysis steps of the aforementioned criticality. A recording medium is a computer-readable recording medium recording the program described in claim 12.

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