JP4168377B2 - Eye color vision test and its adjustment method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tool for determining and detecting the color characteristics of an eye based on visual feeling and correcting a shift in color vision.
[0002]
[Prior art]
Conventionally, for example, there is a method by the same applicant (a method for detecting color characteristics of eyes, light sources, and devices filed on September 13, 2002).
[0003]
[Problems to be solved by the invention]
The present invention relates to a tool for recognizing color misregistration and a color vision inspection tool when it is found that the color vision is different from that of a CIE standard observer.
In the conventional method by the same applicant, color misregistration cannot be determined for each hue, and even if color vision misalignment is found, there is no method for correcting it.
[0004]
Therefore, according to the present invention, it is possible to accurately inspect what color shift occurs in each eye due to visual perception, and as a result, even if the inspection result does not match that of the CIE standard observer, the result is CIE standard. The purpose is to develop a tool that can obtain the same color perception as an observer and enable color handling and color management without any trouble like a CIE standard observer.
[0005]
In the color balance (gray balance) inspection, the present invention provides an achromatic color having a spectrally undulating undulation as an inspection standard, and performing colorimetric and color matching by visually comparing the spectrally undulating color. A color shift and correction filter value for each hue can be found using a mixed color chart or CMY filter that includes a color whose chromaticity matches the standard color chart of the main hue.
[0006]
[Means for solving the problems]
Accordingly, in the present invention, a JIS standard color chart or a colorless reference transmission body having a uniform spectral transmittance such as an ND (neutral density) filter is used as an inspection standard for one of the colorimetric windows, and the other color is used for each color. Various color charts or CMY and RGB filters that are color-converted in the three primary color ratios in the plus / minus direction centered on the color part that approximates the chromaticity (xy, ab) of the vote, and color-mixing them by combining various colors. Based on the other chromaticity xy value (or filter value) obtained in this way, it is possible to detect color vision coincidence / inconsistency with the CIE standard observer and to detect the correction color filter value to be given to the glasses and contact lenses. Eye color vision examination and adjustment method thereof. The goal is achieved by making it possible.
[0007]
【Example】
That is, in the first embodiment, the inspection standard is, for example, from JIS standard color chart, and the achromatic color standard is, for example, reflection density of 0.3, 0.5, 0.7, 0.9, 1.1, 1. 3 and 1.5, and chromatic color standards include three primary colors RGB, CMY6 colors, or Munsell's 5R, 5YR, 5Y, 5YG, 5G, 5BG, 5B, 5PB, 5P, and 5RP main color charts. A large number of colorimetric masks brought to one side are prepared.
[0008]
FIGS. 1 and 2 are explanatory views of a colorimetric mask used in the first embodiment of the present invention. Numerical values and symbols represent achromatic reflection density and Munsell color chart, and are shown in FIG. As described above, in each case, various standard color charts serving as inspection standards are provided in the inside 2, and the color chart color portion is incorporated into the through-flowing portion 3 on various color charts so as to be colorimetric and equal.
[0009]
The color charts for inspection both change the color ratio of the three primary colors in the horizontal axis and vertical axis directions in the image processing of the computer, centering on the color portion that is the same color condition in each standard color chart and each specified light source, It is arranged so that the chromaticity difference increases as it moves away from the center, and if it matches the color portion that is the same color when the visual perception is judged, the eye is equal to the CIE observer, and the color that is the same color is separated from that portion. The color deviation from the CIE observer is found to be large.
[0010]
FIG. 4 shows a case where a typical achromatic color chart having a reflection density of 0.3 or 0.7 for gray balance correction, which is spectrally flat, is used as an inspection standard, and a condition with a specified light source. Centering on achromatic colors with the same chromaticity but different spectral distribution from the color chart, the three primary color ratios in the combination of B and R, R and G, G and B in GMY mixed color inks etc. in the plus or minus direction It is a color chart produced by slightly changing the color part.
This color chart may be produced by bonding colors having the same color with the A, B, C, D, and F light sources. Further, in the image processing, for example, RGB data images corresponding to the reflection density are represented by B and R on the horizontal axis and the vertical axis, R and G, and G and B as shown in FIG. It can be produced with plus or minus. Each can produce a chart with various color characteristics.
[0011]
In that case, it is possible to manufacture so that the color arrangement relationship is equal to the relationship between x and y in the CIE chromaticity diagram so that y increases in the upward direction and x increases in the right direction. By configuring the chromaticity change in association with the chromaticity point of the color correction filter, it is possible to configure the detection of the color correction filter together with the chromaticity position in association with the ready-made color correction filter value.
[0012]
For these achromatic charts, a colorimetric mask having the achromatic color chart having the same brightness as the chart is used to perform colorimetric and color matching by visual sensation. If it matches with the CIE standard observer or if there is a color shift, it can be verified on the chromaticity diagram how much color shift occurs in which direction, and how to adjust the color shift Determine what to do.
FIG. 5 is an example of a chromaticity table chart according to the present invention, which is created by measuring the chromaticity xy of each color chart in a grid attached to the inspection chart. By attaching each, the chromaticity relationship between each light source and the chart becomes clear.
[0013]
[Action]
For example, when inspected with a C light source in FIG. 5, if the amount of equal color is 10 (C), the chromaticity is the same as the standard color chart, so the color balance is the same as the eyes of the CIE standard observer. Neutral gray appears to be neutral gray correctly, and there is no color shift in the color balance of the eye, and if it deviates from the center position, it turns out that there is a color balance shift in that direction from the chromaticity of each part To do.
[0014]
Thus, when there is a color shift, a specific correction filter value is instructed from the related diagram similar to the color chart. The chromaticity in FIGS. 5 and 6 is increased in the right direction by x and the upward direction by y, and the positions of the main correction filter values are plotted in the prepared chromaticity diagrams and chromaticity tables. The correction filter value that can correct the color balance along with the chromaticity can be determined from the determined position.
[0015]
In FIG. 5, specific examples are indicated by circles. In the C light source determination, in each of the C light sources, the CC (color correction) filter is approximately 025G at the K4 position, the color temperature conversion filter 81 is at the K6 position, and M4 is the color temperature conversion filter 82 , M6 has a chromaticity approximating approximately 025M of the CC filter. That is, the chromaticity position of each filter.
[0016]
Therefore, the color chart manual may indicate the chromaticity values of the chart color portion and the filter itself, but it is possible to directly indicate the correction filter value itself that can correct the color shift in that case.
That is, in this embodiment, the K4 position is the complementary color 025M filter, the K6 position is the complementary color 82 filter, the M4 position is the complementary color temperature conversion filter 81 filter, and the M6 position is the complementary color CC filter approximately 025G filter. Can be displayed.
[0017]
Therefore, if the chromaticity of the equal color position is at the K4 position in the figure, for example, the color misregistration is about 025 in the green direction. In this case, 025M of the complementary color is a correction value that can obtain the color vision equal to that of the CIE standard observer. It turns out that there is.
If it is at the M6 position, the color misregistration is about 025 in the magenta direction, and it is found that the 025G filter that is the complementary color is a correction value that can obtain the same color vision as the CIE standard observer.
[0018]
Since the data obtained here is a correction value that can obtain the same color balance as that of the CIE standard observer, even if data different from the CIE observer is obtained in the color vision test, the obtained color filter is used. If a specified light source is applied to the eye or a filter with half the density is used in close contact with the object to be determined, the color shift of the color balance is corrected, and the color balance equal to that of the CIE observer is obtained. As a result, it is possible to determine and handle colors without any trouble.
[0019]
Next, the color misregistration for the main hue is a chart showing the color portions having the same chromaticity in the specified light source, but different from the main hues (10 colors in FIG. 2) of the various colorimetric masks shown in FIG. 4, that is, 9 in FIG. 4, the chromaticity of the ink color portion is changed in the three primary color ratios of the horizontal axis and the vertical axis in the image processing in the plus / minus direction, and the chromaticity difference increases as the distance from the center increases. Similar to the achromatic color chart, the determination is made using various color-converted inspection color charts and the colorimetric mask.
[0020]
For example, in the 5R chart, colors that have the same chromaticity as the chromatic color standard of 5R but have different spectral curves are the same as the achromatic color, and the color at the central position of the three charts in which the vertical axis and the horizontal axis of the color conversion are switched. Create a converted chart, colorimetrically and color-match with a 5R colorimetric mask to determine chromaticity from a chromaticity diagram, chromaticity table, etc., and correction filters such as color misalignment and color correction filters, color temperature correction filters, etc. Can be determined from multiple angles with high accuracy.
[0021]
In this case, the gray balance deviation is first inspected with the achromatic chart, and if a deviation occurs, the color vision can be corrected with a filter capable of correcting the deviation, so that the color deviation can be determined more accurately.
As a set for color vision inspection according to the present invention, as described above, the achromatic color chart provides two kinds of charts, for example, 0.3 and 0.7, respectively, and the chromatic color provides three kinds of charts for each of ten colors. By performing the verification using the charts alternately, it is possible to enable a considerably strict color vision inspection and light source determination.
[0022]
(Determination of color quality of light source)
In the present invention, if it is found that the eye is equal to the CIE observer, and even if a color shift is found, if the correction filter obtained by the above method is used, the determination is made using an achromatic color chart under an arbitrary light source. Then, it is possible to determine the type of the light source from the same color position.
[0023]
FIG. 6 is an explanatory diagram of a chart in the case of determining the color quality of an arbitrary light source in the above-described achromatic color inspection chart, and the symbol positions of A, B, C, and D50 entered are CIE A and A, respectively. In the B, C, and D50 light sources, the chromaticity is a position that matches the standard color chart, and is a position that matches the gray reference of the colorimetric mask used in each light source by the spectroscopic measurement device. Therefore, if the same color or color approximates the achromatic color reference under an arbitrary light source, it can be determined from the position which standard light source matches or approximates the arbitrary light source.
[0024]
FIG. 7 is an example of the attached chromaticity diagram, and the measured values of the achromatic color standard measured by the respective light sources A, B, C, D, and F are plotted at the positions marked with ●, and 16 black body loci and The chromaticity position and the color temperature are determined from the 17 color matching temperature trajectories. If the results of inspection with all light sources match the positions marked with ● in this figure, it is almost certain that color vision is the same as that of the CIE standard observer, and it is also clear which light source caused the color shift. . As described above, in the present invention, since a large number of data from a large number of light sources can be comprehensively matched with CIE data, a mismatch, a chromaticity difference, a wavelength direction (main wavelength), a correction filter, and the like can be seen on the chromaticity diagram. A more accurate color vision test and color vision adjustment method can be identified. Note that K4, K6, M4, and M6 in FIG. 5 are in the vicinity of 18 dots, and the correction filter value can be added to directly read the correction filter.
[0025]
Note that charts can be produced according to the purpose, as fine differences in color perception can be seen if the chromaticity range is narrowed, and large differences in color perception can be grasped if the chromaticity range is increased. It is also possible to produce several types of charts with the same chromaticity but different spectral curves using inks having different color characteristics.
In that case, the chart is not necessarily batch-printed by image processing. For example, a chart can be configured by pasting a specific color chart so as to ensure the same color for each light source. It is also possible to replace the reference color, and the hue type can be 6 types of RGBCMY or a simple type with only 3 colors.
[0026]
When the present invention is carried out in an eyeglass store, an inspection chart is used similarly to a normal visual acuity judgment table, and a colorimetric mask positioned on the chart is moved freely by an observer, and the illumination light source is an ABCDF light source. It is possible to easily switch the color temperature conversion filter at the eyeglass position of the measurer to perform colorimetric / equal color and to comprehensively verify the color vision on the chromaticity diagram.
In this way, if all people go to the eyeglass store, they can easily measure their own color vision, and at the same time, color vision correction using contact lenses is possible.
[0027]
Next, an example of using the subtractive color mixing filter instead of the color chart of the transmission type of the present invention will be described. This is because, in a colorimetric device having a light source, the basic density is further finely adjusted using a colorless reference transmission material such as an ND (neutral density) filter or silver salt film that is flat in wavelength on one of the through windows. The color vision of the observer and the color of the observer can be selected based on the color characteristics of the selected filter by selecting a combination of filters in which the CMY filter and the RGB filter are superposed on each other and the two become equal achromatic colors. It is possible to detect a correction filter for correcting the degree difference.
[0028]
FIG. 8 shows an embodiment of the present invention. The reference color window 20 on the left side of the colorimetric window 19 has an achromatic color transmission reference having no undulation in wavelength, and the mixed color window 21 on the right side has a chromaticity by a combination of CMY filters. Is set to be equal in the left side and the backlight, and a mixed color transmission reference is set, and light that passes through the colorimetric window and enters the eye can be adjusted by the upper and lower sides of the adjustment filter shown in FIG. Twenty-four density adjustment filter plates perform delicate brightness adjustments necessary for highly accurate determination.
[0029]
The 20 achromatic color transmission standards are prepared according to the spectrally non-flat color mixture transmission standard used in 21 and the color mixture transmission standard can be created by an appropriate combination of color correction filters. As an example, the chromaticity xy is the same for each of the standard light sources A, B, C, and D65 in the vicinity of 65C to 70C + 50M + 50 to 55Y and 40C + 30M + 30Y. Therefore, if an achromatic color transmission standard with a transmittance of 20% is used for the former and a transmittance of about 40% is used for the latter, the color, light and dark will be the same color.
[0030]
In this embodiment, since the light source is provided, the cause when the chromaticity does not match is limited to the characteristics of the eye and is suitable for the color vision determination. However, in the basic setting, the CIE standard observer is color-equalized, and the other observers are not color-equalized. That is, in this case, the filter is color-equalized by using the adjustment filter 26 in FIG. From the selection of the value, it is possible to determine the correction filter to be used for the eye simultaneously with the similar color shift.
[0031]
In this case, the same effect can be obtained by turning off the backlight, placing the various standard color charts listed above at the 20 position, and arranging the CMY filters on the white surface so as to overlap each other at the 21 position. And check for each hue.
[0032]
【The invention's effect】
The present invention makes it possible for the first time to easily examine the relationship between each eye's color vision and the color vision of a CIE standard observer with respect to the color vision of a person that has been hardly known so far. And since it becomes possible to verify the difference on the chromaticity diagram fairly precisely, the color vision by the age, gender, occupation, race, ethnicity, life zone, region, left and right eyes, which have hardly been elucidated so far Differences due to fatigue, fatigue, etc. can be easily revealed, and can be used for cultural anthropology, ethnology, physiology, etc.
[0033]
And it became possible for the first time to adjust the color vision of the different eyes, which was rarely thought of at the same time, to approximate that of the CIE standard observer, and it was found that there was no problem with some color misregistration, Since it is possible to dispel troubles and anxieties caused by the lack of a judgment method, it is possible to bring great news for human life.
[0034]
In other words, in the present invention, each color film has its own spectral sensitivity (curve) and the mechanism of the brain so that the color reproduction differs slightly depending on the spectral sensitivity and the spectral color density of the coloring dye. Since each color will be slightly different, the color characteristics that can be easily guessed that the color reproduction will be slightly different for each color, together with the gray balance (color balance) judgment, color misregistration for each major hue There is an effect that the gray balance adjustment value by verifying the direction and the degree, and the filter value for correcting it according to the hue can be found.
[0035]
In any case, people who have been anxious or questioned about color vision because the facts are unknown until now can easily understand the correct data about color vision, so if you use that data, it will be more rational than ever. In the field of color specialization, it is possible to solve problems such as inconsistencies in previous judgments in product inspection, color proofing, color management, color management, and color management in all color combinations. Management becomes possible.
[0036]
The chromaticity difference of eye color deviation can be clearly obtained on the chromaticity diagram, and the effect that it can be easily and reliably applied to optical systems such as contact lenses and eyeglass lenses opens up the possibility of making new glasses. And is very easy to implement.
[0037]
In addition, in determining the color quality of the light source, it is possible to make a multifaceted determination by using a chart of the main hues of chromatic colors in addition to the achromatic color chart, so that a light color determination result with a much higher probability than before can be obtained. This makes it possible to realize more strict and more advanced color handling and color management, which allows visual verification of three-color type instrument measurement results that were previously unthinkable.
[0041]
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of a colorimetric mask having an achromatic color in a colorimetric window.
FIG. 2 is an explanatory diagram of an embodiment of a colorimetric mask having a chromatic color in a colorimetric window.
FIG. 3 is an explanatory diagram of each colorimetric mask.
FIG. 4 is an explanatory diagram of an embodiment of an inspection color chart, and shows three kinds of charts for various achromatic and chromatic inspection charts. The center has approximate chromaticity, and the chromaticity of the surroundings varies depending on the chart.
FIG. 5 is an explanatory diagram showing chromaticity positions for color matching with various light sources.
FIG. 6 is an explanatory diagram of a chromaticity chart.
FIG. 7 is a chromaticity diagram showing chromaticity positions of reference color charts in a main light source.
FIG. 8 shows an embodiment of a transmission type according to the present invention.
FIG. 9 shows an adjustment filter used for the colorimetric part.
[Explanation of symbols]
0.1-1.7 Represents the achromatic color reflection density.
5R ~ 5RP Shows Munsell hue.
1 Colorimetric mask 2 Standard color chart as inspection standard 3 Through window 4 In the center (K4), the ink color part that is the same color as the standard color chart,
A color chart obtained by converting B on the horizontal axis and R on the vertical axis in the plus or minus direction.
5 Number 6 indicating the position of the color chart in the x-axis direction Symbol 7 indicating the position of the color chart in the y-axis direction 7 A color chart obtained by converting R on the horizontal axis and G on the vertical axis.
8 Color chart with G on the horizontal axis and B on the vertical axis.
9 Ink color parts that have the same color as the standard color chart (achromatic color standard or chromatic color standard) with the specified light source.
10 Ink color part that is the same color as the achromatic color standard with a C light source.
K4 Color part with chromaticity approximating about 025G position of color correction (CC) filter K6 Color part with chromaticity approximating position 81 of same color temperature conversion filter M4 Approximating position 82 of same color temperature conversion filter Color part M6 having chromaticity Color part 11 having chromaticity approximating the position of about 025M of the CC color correction filter 11 Chart name. An achromatic color density of 0.3 and a light source C are shown.
12 In the color chart, the affixing position of the achromatic reference color chart. In the chromaticity diagram, the inspection standard chromaticity value display position.
13 A position of a mixed color achromatic color that is the same color and condition as the achromatic color reference in FIGS.
14 The position of a mixed color achromatic color that is the same color and condition as the achromatic color reference in FIGS. 1 and 12 with the B light source.
15 Position of the mixed achromatic color that is the same color as the achromatic color reference and conditions of FIGS. 1 and 12 with the D50 light source.
16 Blackbody locus.
17 Color matching temperature trajectory.
The marks and symbols indicate the position of the achromatic color reference for each of the A, B, C, D, and F light sources.
18 Colorimetric Plate 19 Colorimetric Window 20 Reference Color Window 21 Mixed Color Window 22 Light Source 23 White Surface (Backlight)
24 density adjustment filter plate 25 various density adjustment filters 26 color adjustment filter plate 27 various color density adjustment filter symbols C for cyan filter symbol M for magenta filter symbol Y for yellow filter 025 transmission density 0.025, 05 for transmission density 0. 05,
10 represents a transmission density of 0.10, and 20 represents a transmission density of 0.20.

Claims (1)

An eye color vision inspection tool comprising a colorimetric mask and a chart,
(1) A colorimetric mask in which a standard JIS standard color chart is set on one of the through windows and the other is a through window.
(2) A plurality of colors having different mixing ratios of CMY color materials are arranged in a matrix along the vertical axis and the horizontal axis, and the set JIS standard color chart is different from the spectral curve but has the same chromaticity. The chart includes a color in part, and when the colorimetric mask is set on the chart, the color on the chart is arranged through the through window so that the color on the chart and the JIS standard color chart can be compared. A chart characterized by
An eye color vision inspection tool comprising a colorimetric mask and a chart having the above characteristics.

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