JP2001249227A - Method for manufacturing polarizing film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a polarizing film or a polarizing composite which can discriminate the objective color securely similarly with the case where it is seen by the naked eye, without mistaking color due to the light passing them while maintaining the antidazzle characteristic of the polarizing film or the polarizing composite. SOLUTION: The coordinate values L, a, b of the color in the UCS color space are 22<=L<=70, -2.0<=a<=2.0 and -2.0<=b<=2.0 (L is lightness divided into 0-100, and when shown by tristimulus values X, Y, Z in the CIE standard color system, L=100Y1/2, a=175(1.02 X-Y)Y-1/2 and b=70(Y-0.847Z)Y-1/2). The spectral transmittance in the wavelength of 410-750 nm is within ±30% of the mean value. The polarizing film is manufactured by further superposing two polarizing films and by performing a coloring adjustment so that the transmissivity in wavelengths of 410-750 nm when intersecting the axis of polarization perpendicularly becomes 2% or less. The polarizing composite is manufactured by incorporating a coloring agent in the component member of the polarizing composite integrated by superposing the polarizing film on a light transparent sheet or a light transparent lens so that the transmissivity of the above conditions are satisfied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polarizing film widely used for polarized glasses, liquid crystal displays and other optical devices requiring a polarizing property, and a polarizing composite comprising a polarizing film and a lens or sheet laminated on the polarizing film. And a method for producing the same.

[0002]

2. Description of the Related Art In general, a polarizing lens mounted on polarizing glasses is used to remove glare of reflected light (light that is obliquely reflected and polarized on the surface of an object), and a polarizing film is made of glass or plastic. The sheet is laminated on the sheet and bonded and integrated.

[0003] The polarizing film used for the above-mentioned polarizing lens or the like is obtained by stretching a thin film of polyvinyl alcohol or the like about 3 to 5 times and dyeing it with iodine or a dichroic dye. It is brown or gray-green.

[0004] Such a polarizing film or a lens or a sheet using the polarizing film is used in addition to polarized glasses, stereoscopic movie glasses, a camera, a distortion measuring device, a liquid crystal display, and a product display window (show window). , A monitor for television OA, a window for adjusting the amount of light, and the like. In particular, polarized glasses are used in various high illuminance environments such as outdoor work in an orchard, a fish farm, a printing shop, and the like.

[0005]

However, in the conventional polarizing film or polarizing lens sheet, the polarizing film is colored with iodine or the like, and the transmitted light has many colors such as blue to brown as a colorant. It is different from the color that is directly felt by the naked eye, that is, it is difficult to distinguish the color of an object with light transmitted through a polarizing film or polarizing lens sheet as if it were seen with the naked eye. There is a point.

[0006] In addition, specific problems that occur in various uses of polarized eyeglasses are that when used in an orchard or the like, the degree of maturity of fruits cannot be distinguished from color samples, This includes that it is not easy to select at the fish farm for appreciation fish, that the colors cannot be identified when performing sketching outdoors, and that the color of the printed surface cannot be identified when used in a high illuminance printing shop.

Accordingly, an object of the present invention is to solve the above-mentioned problems, maintain the anti-glare properties of the polarizing film or the polarizing composite, and recognize the color with the light transmitted therethrough without misidentifying colors. The object is to manufacture the object so that the color of the object can be reliably determined in the same manner as when the object is viewed.

[0008]

In order to solve the above-mentioned problems, according to the present invention, coordinate values L, a, b of a color in a UCS color space (L is lightness divided into 0 to 100, and CIE In terms of tristimulus values X, Y, and Z in the standard color system, L = 100Y ^1/2 , a = 175 (1.02X−
Y) Y- ^{1 / 2} , b = 70 (Y-0.847Z) Y- ^{1 / 2} . ) Is 22 ≦ L ≦ 70, −2.0 ≦ a ≦ 2.0, −
2.0 ≦ b ≦ 2.0 and wavelengths 410 to 750 n
m so that the spectral transmittance at m is within ± 30% of the average value, and the transmittance at the wavelength of 410 to 750 nm when two polarizing films are stacked and the polarization axes are orthogonal to each other is 2% or less. This is the method of manufacturing the adjusted polarizing film.

Alternatively, in a method of manufacturing a polarizing composite by laminating and integrating a polarizing film on a light-transmitting sheet or lens, coordinate values L, a, b of colors in a UCS color space are provided.
(L is a lightness classified into 0 to 100, and if represented by tristimulus values X, Y, and Z in the CIE standard color system, L = 10
0Y ^1/2 , a = 175 (1.02X−Y) Y ^−1/2 , b =
70 (Y-0.847Z) Y- ^{1 / 2} . ) Is 22 ≦
L ≦ 70, −2.0 ≦ a ≦ 2.0, −2.0 ≦ b ≦ 2.
0, the spectral transmittance at a wavelength of 410 to 750 nm is within ± 30% of the average value, and the wavelength 4 when the two polarizing composites are superposed and the polarization axes are orthogonal to each other.
The polarizing composite was manufactured by incorporating a coloring agent into the constituent members of the polarizing composite so that the transmittance at 10 to 750 nm was 2% or less.

Alternatively, in a method of manufacturing a polarizing composite in which a polarizing film is superposed and integrated on a light-transmitting sheet or lens, color coordinate values L, a, b (L
Is the lightness classified into 0 to 100, and if represented by tristimulus values X, Y, and Z in the CIE standard color system, L = 100Y
^1/2 , a = 175 (1.02X-Y) Y- ^{1 / 2} , b = 70
(Y-0.847Z) Y- ^{1 / 2} . ) Is 22 ≦ L ≦
70, −2.0 ≦ a ≦ 2.0, −2.0 ≦ b ≦ 2.0, and the spectral transmittance at a wavelength of 430 to 750 nm is within ± 30% of the average value. The wavelength 430 when the polarizing composites of
A method for producing a polarizing composite was prepared by incorporating a coloring agent and an ultraviolet absorber into the constituent members of the polarizing composite so that the transmittance at 750 nm was 2% or less.

Alternatively, the present invention provides a method for manufacturing polarized glasses to which the polarizing composite having any one of the above structures is mounted.

The above-mentioned color-adjusted polarizing film or the like polarizes light having a wavelength of 410 to 750 nm, which is substantially equal to a wavelength in the range of 380 to 780 nm that can be seen by the human eye. The color of the transmitted light is a coordinate value L, a, b of a color in a UCS color space (Uniform color space).
Are color-adjusted to values within the above-mentioned predetermined ranges.

Incidentally, a UCS chromaticity diagram (Uniform chromati
The chromaticity is displayed in the plane of (city scale diagram),
In order to display a color, the brightness of the color is further required. Therefore, by taking a lightness axis perpendicular to the chromaticity diagram through the origin of the UCS chromaticity diagram, one color space can be created. This is called the UCS color space.

By the way, the above-mentioned coloring adjustment means adding a predetermined amount of a coloring agent such as a direct dye, a reactive dye or an acid dye in addition to a coloring agent such as iodine for imparting the polarizing property contained in the polarizing film. Then, the polarizing film or the like is colored so as to have the L, a, and b values in the predetermined range.

[0015] By such coloring adjustment, the light transmitted through the polarizing film has a spectral transmittance within ± 30% of an average value in the wavelength range of 410 to 750 nm,
That is, the polarizing film does not transmit only light of a specific wavelength, and the transmission amount of light of various wavelengths is stable within ± 30% of the average value.

Further, in the above-mentioned coloring adjustment, it is necessary to satisfy the condition that the transmittance at a wavelength of 410 to 750 nm, which transmits these two polarizing films when the polarizing axes are orthogonal to each other, is 2% or less when the polarizing films are superposed. It is. This is because when natural light hits an object and the reflected light passes through one polarizing film, it satisfies the L, a, and b values in the above-mentioned predetermined range, and the spectral transmittance in the predetermined range is stable within ± 30% of the average value. This is because, even when light is transmitted, light of a specific wavelength may be included in a relatively large amount, and it is necessary to suppress the amount of transmitted light of such a specific wavelength to sufficiently make the transmitted light close to a natural color.

Although the brightness of the transmitted light of the polarizing film colored and adjusted under such conditions slightly decreases, light of all wavelengths identifiable to the naked eye is included on average. Similarly, the light becomes light that can reliably determine the color of the object.

Also, in a polarizing composite obtained by integrating a polarizing film on a light-transmitting sheet or lens, at least one member selected from the polarizing film, sheet and lens constituting the polarizing composite. By including the colorant for the color adjustment in the component (1), there is an effect that, as in the case of the above-mentioned polarizing film, the transmitted light contains light of all wavelengths that can be visually identified.

By the way, if a polarizing composite is formed by adding an ultraviolet absorber together with a coloring agent to the constituent members of the polarizing composite, it is natural that the polarizing composite has an anti-ultraviolet property. Although there are wavelengths 410 to 43 in the near visible range
When an ultraviolet absorber that absorbs light of 0 nm is used, it becomes difficult to stabilize the amount of transmitted light in the wavelength range of 410 to 750 nm. However, in that case, the wavelength 430 to 430
The spectral transmittance at 750 nm is ± of the average value in the range.
When the average is within 30%, a polarizing composite which can be used is obtained.

In this case as well, the transmittance in the above-mentioned wavelength range when two polarizing composites are overlapped and the polarization axes are orthogonal to each other is 2%.
It is necessary to adjust the coloring so that: When the above conditions are satisfied, a polarizing film or a polarizing composite which can reliably discriminate the color of the object and can cut off ultraviolet rays as in the case of the naked eye.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Color coordinate values L, a, and b in a UCS color space according to the present invention are values on coordinates grasped as a three-dimensional color solid as shown in FIG. It is determined by a well-known photoelectric chromaticity meter (phototube using a photocell as a light receiver). As a color difference meter,
Color and Color-Differen by Richard S. Hunter
In addition to what is called "ce Meter", it may be a domestic product described later.

In the coordinate values described above, L is lightness divided into 0 to 100. If L, a, and b are represented by tristimulus values X, Y, and Z in the CIE standard color system, L = 100Y
^1/2 , a = 175 (1.02X-Y) Y- ^{1 / 2} , b = 70
(Y-0.847Z) Y- ^{1 / 2} . In general, tristimulus values of light are determined by a spectral colorimetric method, and the International Commission on Illumination specifies that the symbols X, Y, and Z are used for tristimulus values.

As the colorant used in the present invention, in addition to iodine (iodine) as a colorant for polarized light, well-known direct dyes, reactive dyes, acid dyes and the like can be used.

Specific examples of the direct dye include Dial Minas Blue GF, Kayara Supra Green GG, Serious Supra Brown G, Sumilite Black G, Direct Fast Black D, Kayasu Spragray CGL, Sumilite Red 4B, Serious Scarlet B, Direct Fast Yellow R, Direct Fast Orange, Nippon Orange GG, Direct Orange GK, and the like.

The reactive dyes include Micalon Yellow RS, Micalon Yellow GRS, Diamirror Yellow RTN, Diamirror Brilliant Orange GD,
Micarons Scarlet GS, Diamirror Red B, Diamirror Brilliant Violet 5R, Micaron Brilliant Blue RS, Micaron Olive Green 3G
S and the like.

Examples of the acidic dye include Kayakaran Yellow GL, Kayaanol M Yellow RW, Daiwa Acid Orange I, Kayakaran Orange RL, Sumitomo Fast Scarlet A, Brilliant Scarlet 3R, Kayanol M Red BW, Brilliant Acid Blue R, Acid Fast Blue NP, Kayanol M Blue BW, Sumilan Green BL, Kayakaran Olive BGL and the like.

The dyes described above can also be combined and dyed.

Examples of the stretchable film material used as the material of the polarizing film include a polyvinyl alcohol film (commonly called vinylon film), a polyvinyl chloride film, a polyethylene terephthalate film and the like.

The thickness and the degree of stretching of the film before stretching are not particularly limited, but those obtained by uniaxially stretching a 75 μm thick film 3 to 5 times have good polarizing properties.

In order to color such a polarizing film with the above-described dye, the film is stretched, immersed in a dye solution, and then appropriately treated by adding boric acid, borax or the like.

In the case of producing a polarizing composite, it is possible to color one or more components selected from a light-transmitting sheet, a lens and an adhesive which are constituent members other than the polarizing film. In this case, the above-mentioned sheet or lens may be provided with a surface coat layer by vacuum deposition, ion plating, colorant transfer, or the like, that is, the coating agent may be colored. When coloring the adhesive, it is preferable to use an oil dye in terms of good heat resistance and solubility. Commercially available oil dyes include Diaresin Yellow A, Dialesin Orange K, Dialesinlet J and the like.

In the present invention, the material of the sheet or lens is not particularly limited. For example, cellulose diacetate, cellulose triacetate, cellulose acetate butyrate (CAB), cellulose propionate (C)
P), polycarbonate, methyl methacrylate (MM
A), polyester, polyolefin and the like. Examples of the thermosetting resin include diethylene glycol bisallyl carbonate, ethylene glycol diacrylate, methacrylate, and acrylstyrene urethane copolymer.

As shown in FIG. 2, in order to integrate a polarizing film with a sheet or a lens to produce a polarizing composite, usually, a polarizing film (film) 1 is bonded via an adhesive 2 to two sheets. It is sandwiched and adhered by the lenses 3 and 4 (or a sheet). Alternatively, a polarizing composite can be manufactured by inserting a polarizing plate into an injection mold and injecting a thermoplastic resin without using an adhesive.

If the above-mentioned predetermined condition by color adjustment is satisfied, a known coating may be applied to the surface of the polarizing composite, for example, a hard coat, a multi-coat, an anti-fog coat, a drip-proof coat, UV It is preferable to provide a coat, an IR coat, a hollow coat, a half dyeing, and the like.

As described above, it is preferable that the color adjustment satisfying the predetermined conditions such as L, a, b and the like is mainly performed on the polarizing film. However, as described above, the adhesive (including the adhesive) sheet is used. Alternatively, the coloring of the lenses (or their surface coating layers) can be adjusted.

[0036]

EXAMPLES Example 1 A 75 μm-thick polyvinyl alcohol film (commonly called vinylon film) was uniaxially stretched 4 times, and then 0.1% by weight of iodine, 0.04% by weight of direct dye, direct fast orange, and seriously Immersion in an aqueous solution (dye solution) containing 0.02% by weight of Scarlet B, 0.01% by weight of Micaron Yellow RS as a reactive dye and 0.012% by weight of Diamira Red B, and then an aqueous solution containing 3% by weight of boric acid After immersion in water, a heat treatment was performed at 70 ° C. for 5 minutes to produce a plurality of polarizing films (thickness: 30 μm).

The color coordinate values L, a, and b of the obtained polarizing film (one sheet) in the UCS color space are converted to # 9 manufactured by Nippon Denshoku Industries Co., Ltd.
In addition to measuring with a device that combines a color measurement system and a Z-II optical sensor, the wavelength 41
The spectral transmittance in the range including 0 to 750 nm was measured with a U-2000 spectrophotometer manufactured by Hitachi, Ltd.
Further, the spectral transmittance was measured when two polarizing films were stacked with the polarizing axes of the polarizing films arranged in an orthogonal state, and the results are shown in FIG.

As is apparent from the results shown in FIG. 3, in the first embodiment, L = 54.81, a = -0.56, b = -0.2
3 within the predetermined range, and the light transmittance (T
%), The average value is 31.95%, the fluctuation range is from -7.7% to + 10.8%, and the spectral transmittance is within 30%, and can be visually recognized. Includes light of all wavelengths on average, and has a transmittance of 0.0 to 0.8 at a wavelength of 410 to 750 nm when two polarizing films are orthogonal to each other.
% (2% or less), and the color of the object could be reliably discriminated as in the case of seeing with the naked eye, and the lens could be used for polarized glasses.

Example 2 The polarizing film of Example 1 was applied to spherical glass to form a spherical surface, and a urethane-based adhesive (Polynate 1000, manufactured by Toyo Polymer Co., Ltd.) was applied to both surfaces and dried. Next, this is set at the center of the gasket, and glass molds are arranged on both sides. A liquid monomer of ADC resin (diethylene glycol bisallyl carbonate), which is a thermosetting resin, and its catalyst IPP (diisopropyl) are provided between the polarizing film and the glass mold. A mixture of 3% by weight of peroxydicarbonate) was injected, and the mixture was heated from 20 ° C. to 80 ° C. at a constant heating rate for 12 hours to produce a polarizing composite (polarizing lens).

The spectral transmittance in the range including the color coordinate values L, a, b of the obtained polarizing lens (one piece) and the wavelength of 410 to 750 nm is measured, and two polarizing lenses are superposed on each other to obtain the respective polarizing axes. Were arranged in an orthogonal state, and the spectral transmittance at that time was measured. The results are shown in FIG.

As is clear from the results shown in FIG. 4, in the second embodiment, L = 53.42, a = −0.40, b = 0.76.
And the light transmittance (T%) within a predetermined wavelength range.
Is 31.41, and the fluctuation range is -21.4.
% To + 15.9% and within ± 30%, and the transmittance at 410 to 750 nm when two polarizing films are orthogonal to each other is 0.0 to 0.2% (2% or less); It contained light of all wavelengths identifiable to the naked eye on average, and could reliably discriminate the color of an object as in the case of the naked eye, and could be used for polarized glasses.

Comparative Example 1 A polarizing film (thickness: 30 μm) made of a polyvinyl alcohol film was produced in exactly the same manner as in Example 1 except that only iodine was used.

The coordinate values L, a, b of the obtained polarizing film (one sheet) in the UCS color space and wavelengths of 410 to 750 nm
And the spectral transmittance in the case where two polarizing films were stacked and the respective polarization axes were arranged in an orthogonal state were measured. The results are shown in FIG.

As is clear from the results shown in FIG. 5, in Comparative Example 1, L = 60.38, a = -0.55, b = -3.9.
9, the b value is out of the predetermined range, the average value of the light transmittance (T%) in the predetermined wavelength range is 38.38%, and the fluctuation range is from -6.5% to + 6.8%. It is stable within ± 30%, but has a wavelength of 450 when two polarizing films are orthogonal.
The transmittance near nm was 5.4%, exceeding the predetermined limit of 2%. In addition, when the light (polarized light) reflected by natural light hitting the object through the polarizing film of Comparative Example 1 was actually observed, there was no so-called “glare” which is a measure of antiglare property.
Blue color was strongly felt as a color impression.

Comparative Example 2 Iodine (Iodine) as Polarizing Agent
A polarizing composite (polarizing lens) was used in which a polarizing film directly using only a dye was sandwiched between two lenses made of polycarbonate resin without being used, and bonded and integrated.

The coordinate values L of the color of this polarizing lens (one piece)
In addition to measuring the spectral transmittance in the range including a and b and the wavelength of 410 to 750 nm, two polarizing lenses are superimposed and their polarization axes are arranged in an orthogonal state, and the spectral transmittance at that time is measured. The results are shown in FIG.

As is clear from the results of FIG. 6, in Comparative Example 2, L = 39.06, a = -3.57, and b = 1.86.
And the value a is out of the predetermined range, and the polarizing lens has a wavelength of 7
The fluctuation of the light transmittance (T%) around 00 to 750 nm is −
73.9 to +232, and ± of the average value (26.08)
It exceeds 30%, and the transmittance near a wavelength of 700 to 750 nm when two polarizing films are orthogonal to each other is 750 nm.
Was 74.6%, exceeding the predetermined limit of 2%. When actually seeing the light (polarized light) reflected by natural light hitting an object with this polarizing lens, there was no so-called "glare" which is a measure of anti-glare properties. In this case, the color of the object as in the case where it was not able to be determined.

Comparative Example 3 A polarizing composite (polarizing lens) was used in which a polarizing film using iodine and a colorant as a polarizing agent was bonded and integrated while sandwiching a polarizing film between two lenses made of cellulose resin. did.

The spectral transmittance in the range including the color coordinate values L, a, b of the polarizing lens (one piece) and the wavelength of 410 to 750 nm is measured, and two polarizing lenses are overlapped to set the respective polarizing axes. The lenses were arranged in an orthogonal state, and the spectral transmittance at that time was measured. The results are shown in FIG.

As is clear from the results shown in FIG. 7, in Comparative Example 3, L = 50.22, a = -2.10, b = 0.64.
And the value a was out of the predetermined range. This polarizing lens has a light transmittance (T) near a wavelength of 650 to 750 nm.
%) Is -79.3% to + 66.4%, which exceeds ± 30% of the average value (28%), and the wavelength around 700 to 750 nm when two polarizing films are orthogonal to each other. The transmittance was 5.4% at 750 nm, exceeding the predetermined limit of 2%. When actually seeing the light (polarized light) reflected by natural light on an object with this polarizing lens, there was no so-called "glare" which is a measure of the antiglare property, but as in Comparative Example 2, the color was red. The system was strongly felt, and the color of the object as in the case of the naked eye could not be reliably determined.

Example 3 In place of the mixture of the liquid monomer of the ADC resin and the catalyst IPP thereof in Example 2, 0.3% by weight of an ultraviolet absorber (UPINAL D-49, manufactured by General Aniline and Film Co., Ltd.) was blended. A polarizing composite was prepared in exactly the same manner as in Example 2, except that a mixture obtained by mixing and stirring 3% by weight of a liquid monomer of ADC resin (diethylene glycol bisallyl carbonate) and its catalyst IPP (diisopropyl peroxydicarbonate) was used. (Polarized lens) was manufactured.

The spectral transmittance in the range including the coordinate values L, a, b of the color of the obtained polarizing lens (one piece) and the wavelength of 430 to 750 nm was measured, and two polarizing lenses were superimposed on each other to obtain the respective polarizing axes. Were arranged in an orthogonal state, and the spectral transmittance at that time was measured. The results are shown in FIG.

As is clear from the results shown in FIG. 8, in the third embodiment, L = 53.60, a = −1.40, b = 1.64.
, And the light transmittance (T
%) Is within 30% from -6.2% to + 15.2%, and 430 when two polarizing films are orthogonal to each other.
Since the transmittance at 〜750 nm is 0.2 to 0.4% and 2% or less, the light of all wavelengths identifiable to the naked eye is included on average, and the color of the object is the same as when viewed with the naked eye. Was able to be reliably discriminated and also provided with ultraviolet protection, and could be used for polarized glasses (ultraviolet protection and anti-glare sunglasses).

[0054]

As described above, according to the method for manufacturing a polarizing film of the present invention, natural light transmitted through one polarizing film satisfies L, a, and b values within a predetermined range, and spectrally transmits light within a predetermined wavelength range. This is a production method in which the variation of the rate is within a predetermined range of the average value, and the coloring is adjusted so that the transmittance in a predetermined wavelength range when two polarizing films are overlapped and their polarization axes are orthogonal to each other is 2% or less. Therefore, there is an advantage that a polarizing film capable of reliably discriminating a color can be manufactured in the same manner as when viewed with the naked eye without misidentifying colors with light transmitted through the polarizing film.

Further, the invention relating to the method for manufacturing a polarizing composite in which a polarizing film is laminated on a light-transmitting sheet or lens and integrated therewith has the same advantages as the method for manufacturing a polarizing film.

Also, in the invention of a method for producing a polarizing composite by including a coloring agent and an ultraviolet absorbing agent in the constituent members of the polarizing composite, the polarizing composite has anti-ultraviolet properties and is the same as when visually observed. Another advantage is that a polarizing composite that can provide transmitted light from which colors can be reliably determined can be manufactured.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a color solid in a UCS color space.

FIG. 2 is an enlarged sectional view of a polarizing composite.

FIG. 3 is a table showing the relationship between the wavelength of transmitted light and the transmittance in Example 1.

FIG. 4 is a table showing the relationship between the wavelength of transmitted light and the transmittance in Example 2.

FIG. 5 is a table showing the relationship between the wavelength of transmitted light and the transmittance in Comparative Example 1.

FIG. 6 is a table showing the relationship between the wavelength of transmitted light and the transmittance in Comparative Example 2.

FIG. 7 is a chart showing the relationship between the wavelength of transmitted light and the transmittance in Comparative Example 3.

FIG. 8 is a table showing the relationship between the wavelength of transmitted light and the transmittance in Example 3.

[Explanation of symbols]

 Reference Signs List 1 polarizing film 2 adhesive 3, 4 lens

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) B29L 9:00 B29L 9:00 11:00 11:00

Claims (4)

[Claims] 1. A coordinate value L of a color in a UCS color space.
a, b (L is the brightness divided into 0 to 100, CI
In terms of tristimulus values X, Y, and Z in the E standard color system, L
= 100Y ^1/2 , a = 175 (1.02X-Y)
Y- ^{1 / 2} , b = 70 (Y-0.847Z) Y- ^{1 / 2} . ) Is 22 ≦ L ≦ 70, −2.0 ≦ a ≦ 2.0, −
2.0 ≦ b ≦ 2.0 and wavelengths 410 to 750 n
m so that the spectral transmittance at m is within ± 30% of the average value, and the transmittance at the wavelength of 410 to 750 nm when two polarizing films are stacked and the polarization axes are orthogonal to each other is 2% or less. And a method for producing a polarizing film. 2. A method for producing a polarizing composite, in which a polarizing film is laminated on a light-transmitting sheet or lens and integrated,
Color coordinate values L, a, b in the UCS color space (L is 0 to
The lightness is divided into 100, and when represented by tristimulus values X, Y, and Z in the CIE standard color system, L = 100Y ^1/2 ,
a = 175 (1.02X−Y) Y ^−1/2 , b = 70 (Y−
0.847Z) Y- ^{1 / 2} . ) Is 22 ≦ L ≦ 70,
-2.0 ≦ a ≦ 2.0, −2.0 ≦ b ≦ 2.0,
Further, the spectral transmittance at wavelengths 410 to 750 nm is within ± 30% of the average value, and the wavelengths 410 to 75 when two polarizing composites are further superposed and the polarization axes are orthogonal to each other.
A method for producing a polarizing composite, wherein a component of the polarizing composite contains a coloring agent such that the transmittance at 0 nm is 2% or less. 3. A method for producing a polarizing composite, in which a polarizing film is laminated on a light-transmitting sheet or lens and integrated,
Color coordinate values L, a, b in the UCS color space (L is 0 to
The lightness is divided into 100, and when represented by tristimulus values X, Y, and Z in the CIE standard color system, L = 100Y ^1/2 ,
a = 175 (1.02X−Y) Y ^−1/2 , b = 70 (Y−
0.847Z) Y- ^{1 / 2} . ) Is 22 ≦ L ≦ 70,
-2.0 ≦ a ≦ 2.0, −2.0 ≦ b ≦ 2.0,
In addition, the spectral transmittance at a wavelength of 430 to 750 nm is within ± 30% of the average value, and the wavelength 430 to 75 when two polarizing composites are further superposed and the polarization axes are orthogonal to each other.
A method for producing a polarizing composite, wherein a component of the polarizing composite contains a coloring agent and an ultraviolet absorber so that the transmittance at 0 nm is 2% or less. 4. A method for manufacturing polarized glasses to which the polarizing composite according to claim 2 is mounted.