JP7438301B2 - Ophthalmic transmission optical article set, ophthalmic lens set, ophthalmic transmission optical article, and glasses - Google Patents

Description

The present disclosure relates to an ophthalmic transmissive optical article set, an ophthalmic lens set, an ophthalmic transmissive optical article, and eyeglasses.

Patent Document 1 describes a plastic eyeglass lens or a plastic wafer made of a plastic lens wafer made of a urethane thermosetting resin, a (meth)acrylic thermosetting resin, a polycarbonate resin, or a polyamide resin, and a plastic wafer on at least one side of the plastic wafer. A plastic eyeglass lens comprising one or more formed component layers, characterized in that at least one of the plastic wafer and the component layers contains an organic dye that satisfies the following condition (A). Plastic eyeglass lenses are described.
Condition (A): In the visible light absorption spectrum measured with a chloroform or toluene solution of an organic dye, it has a main absorption peak (P) between 565 nm and 605 nm, and the peak apex of the main absorption peak (P) ( Pmax) has an extinction coefficient of 0.5×10 ⁵ (ml/g cm) or more, and the peak width at the absorbance of 1/4 of the absorbance of the peak apex (Pmax) of the main absorption peak (P) is 50 nm or less. and the peak width at the absorbance of 1/2 of the absorbance of the peak apex (Pmax) of the main absorption peak (P) is 30 nm or less, and 2 of the absorbance of the peak apex (Pmax) of the main absorption peak (P). The peak width at absorbance of /3 is in the range of 20 nm or less.

JP2013-61653A

The present disclosure is an ophthalmic transmissive optical article set consisting of two ophthalmic transmissive optical articles. The present invention relates to a set of transmissive optical articles for eyes, in which the transmissive optical article has a color difference ΔE00 of more than 0.23 and less than 33.8.

1 is a perspective view of an embodiment of eyeglasses having a set of transmissive ophthalmic optical articles; FIG. FIG. 1 is a perspective view of one embodiment of an ophthalmic transmissive optical article. FIG. 1 is a cross-sectional view of one embodiment of binoculars.

Hereinafter, the ophthalmic transmissive optical article set of this embodiment will be described in detail.
As an eye transmission type optical article set, a eye transmission type optical article set that can improve visual contrast is desired. The ophthalmic transmissive optical article set of this embodiment has characteristics that can improve visual contrast.
In addition, in this specification, "~" is used to include the numerical values described before and after it as a lower limit value and an upper limit value.

<Transparent optical article set for eyes>
Examples of the ophthalmic transmissive optical article set include an ophthalmic transmissive optical article set (ophthalmic lens set) 10 used in eyeglasses 1 shown in FIG. 1 . Specifically, an ophthalmic transmissive optical article set including a right-eye spectacle lens 11 and a left-eye spectacle lens 12 may be mentioned.
In FIG. 1, glasses 1 include an ophthalmic transmission type optical article set (ophthalmic lens set) 10 consisting of a right eye spectacle lens 11 and a left eye spectacle lens 12, and a right eye spectacle lens 11 and a left eye spectacle lens 12. The eyeglass frame 14 is provided.
That is, the ophthalmic transmissive optical article set 10 consisting of the right eye spectacle lens 11 and the left eye spectacle lens 12 is an ophthalmic transmissive optical article set in the present disclosure, and is an ophthalmic lens set. Further, the right-eye spectacle lens 11 and the left-eye spectacle lens 12 are ophthalmic transmissive optical articles, ophthalmic lenses, and spectacle lenses in the present disclosure.

The eyeglass frame 14 is a conventionally known eyeglass frame having a pair of lens frames into which the right eye eyeglass lens 11 and the left eye eyeglass lens 12 are respectively attached, and a temple for hanging the eyeglass frame on the user's ear. .

In the ophthalmic transmissive optical article set (ophthalmic lens set) 10 of the present disclosure, the color difference in L ^* a ^* b ^* display between the right eye spectacle lens 11 and the left eye spectacle lens 12 is greater than 0.23, and 33 It is less than .8. Note that in the present disclosure, the color difference between two spectacle lenses is a color difference ΔE00 in which coefficients corresponding to each value of brightness, saturation, and hue are introduced in order to correct the visual non-uniformity of CIELAB.

The coordinates in the L ^* a ^* b ^* display change depending on the reference light source. In the present disclosure, a value calculated using a CIE standard illuminant D65 with a 2-degree visual field, which is standard for outdoor daylight, is used as the reference light.
The present inventors set the color difference ΔE00 of the two eyeglass lenses constituting the ophthalmic transmissive optical article set (ophthalmic lens set) 10 within the above range, so that they can be used not only in outdoor daylight but also in outdoor twilight. It has been found that the effect of improving visual contrast can be obtained even under indoor LED lights, fluorescent lights, etc.

In order to obtain the effect of improving visual contrast, the colors of the two spectacle lenses must have a color difference that allows humans to recognize that they are different colors. From this point of view, the color difference ΔE00 in the L ^* a ^* b ^* display of the two spectacle lenses (the left eye spectacle lens and the right eye spectacle lens) is more than 0.23, more preferably 0.4 or more, and 0.6 The above is more preferable. On the other hand, if the color difference is too large, binocular rivalry may occur, leading to discomfort. Therefore, the color difference ΔE00 is less than 33.8, more preferably 20.0 or less, and even more preferably 15.0 or less.

The color difference in the L ^* a ^* b ^* display is determined by measuring the L ^* a ^* b ^* coordinates of each eyeglass lens using a spectrophotometer (for example, Hitachi High Technologies' U -4100, etc.), and the color difference ΔE00 can be calculated from the L ^* a ^* b ^* coordinates of the two eyeglass lenses obtained.

An example of a specific measurement procedure is shown below. The reference light was measured without a sample using a spectrophotometer equipped with an integrating sphere (U-4100 manufactured by Hitachi High-Technologies), and then the convex surface of the eyeglass lens was placed facing the incident light side to transmit the light. By measuring light, the spectral transmittance of eyeglass lenses can be measured. The luminous flux size is about 11 mm in length and about 8 mm in width at the sample position, the measurement wavelength range is 380 nm to 780 nm, the scan speed is 300 nm/min, the sampling interval is 0.50 nm, the number of measurements is 1, and the slit width is 5 nm.
Next, from the obtained spectral transmittance, use the color calculation program provided in U-4100 to calculate the luminous transmittance Y value and the L ^* value when the D65 light source (2 degrees of visual field) is used as the reference light. , a ^* value, b ^* value, are calculated.
Finally, the color difference ΔE00 is calculated from the literature describing the calculation method (Gaurav Sharma, et. al., The CIEDE2000 Color-Difference Formula: Implementation Notes, Supplementary Test Da ta, and Mathematical Observations, COLOR research and application, Volume 30, Number 1 , February 2005) and the spreadsheet distributed by the author of the document (http://www2.ece.rochester.edu/~gsharma/ciede2000/), the two eyeglass lenses previously measured. Calculated from the L ^* value, a ^* value, and b ^* value.

Moreover, the measurement of the spectral transmittance of a spectacle lens may be performed at the optical center of the spectacle lens. This point also applies to non-prescription eyeglass lenses since the lenses have curved surfaces. Further, since the optical center and the geometric center of the eyeglass lens before beading are at the same position, in the case of the eyeglass lens before beading, the measurement may be performed at the geometric center.
In addition, if the eyeglass lenses are progressive lenses, measurements are taken at one or more of the prism reference point, the distance measurement point, and the near measurement point, and the two eyeglass lenses (progressive lenses) are measured at each position. It is sufficient if the color difference ΔE00 of the lens) is more than 0.23 and less than 33.8.
In addition, in the case of an ophthalmic transmissive optical article (goggles) that has two regions with different colors as described below, two points in the left and right direction are set at the vertical center of the ophthalmic transmissive optical article (goggles). Define as center. The distance between these two points is 64 mm±10 mm for adults and 50 mm±10 mm for children, with the center of the ophthalmic transmission type optical article as the base point. The spectral transmittance may be measured using these two points as the optical center of each of the two regions.

Here, when the two spectacle lenses have a color difference, there is no particular restriction on the color depth of the spectacle lenses, that is, the luminous transmittance of the lenses, and the color difference ΔE00 between the two spectacle lenses is more than 0.23 and 33. If it is less than 8, the effect of improving visual contrast can be obtained while suppressing the occurrence of binocular rivalry.

If the luminous transmittance of the two spectacle lenses is too low, even if the visual contrast is improved by the effects of the present disclosure, the amount of light entering the eyes will be small, making it difficult to obtain good visual acuity. From the above viewpoint, the luminous transmittance of the two spectacle lenses is preferably 3% or more, more preferably 18% or more, even more preferably 43% or more, and particularly preferably 80% or more. . Note that, as will be described later, fluorescent dyes and luminescent dyes can also be used to dye the spectacle lenses, and in this case, the luminous transmittance of the spectacle lenses may exceed 100%. Note that the upper limit value of the luminous transmittance of the two spectacle lenses is often 120% or less, and more often 110% or less.

The luminous transmittances of the two spectacle lenses may be the same or different. If the difference in luminous transmittance between two spectacle lenses is large, binocular stereopsis may be affected by the Pulfrich effect, so it is preferable that the difference in luminous transmittance between two spectacle lenses is small; % or less, more preferably 50% or less, even more preferably 30% or less.

Luminous transmittance can be measured by the method described above. Alternatively, the spectral transmittance of the eyeglass lens can be measured with a spectrophotometer (for example, U-4100 manufactured by Hitachi High Technologies, etc.) and calculated from the spectral transmittance according to JIS T7333:2018.

Here, there is no particular restriction on the color of each of the two spectacle lenses as long as the color difference ΔE00 is greater than 0.23 and less than 33.8. For example, in a purple-blue eyeglass lens that is said to have the effect of improving visual contrast, as described in Patent Document 1, by adjusting the color so that the color difference ΔE00 between the two eyeglass lenses is more than 0.23. , it is possible to further enhance the visual contrast improvement effect.
Furthermore, the color can be selected according to the preference of the eyeglass lens wearer. The colors of the two eyeglass lenses are mixed in the brain and become an intermediate color, so the colors of the two eyeglass lenses can be located exactly opposite to each other across the desired color in the L ^* a ^* b ^* color system. preferable.
Furthermore, it is also preferable that the colors of the two spectacle lenses have a physically complementary color relationship. This is because when the images from the left and right eyes are mixed in the brain, they become achromatic (gray) and feel less strange. Note that physically complementary colors are colors that are complementary (a relationship that complements each other), and are colors that are exactly opposite to each other across the origin in the L ^* a ^* b ^* color system.
Specifically, for example, it is preferable to select two colors that have a physical complementary color relationship, such as red and cyan, green and macenda, blue and yellow, etc., as the color combination of the two spectacle lenses. Among these, from the perspective of reducing the influence of color when viewing with one eye, such as when blinking, it is preferable not to use yellowish colors that are psychologically stimulating, that is, colors with large b ^* values on the positive side. It is more preferable that the color combination of the two spectacle lenses be selected from red-ish colors, blue-ish colors, green-ish colors, and intermediate colors thereof.
In addition, red colors are colors in which the value of a ^* is large on the positive side in the L ^* a ^* b ^* color system, green colors are colors in which the value of a ^* is large on the negative side, and blue colors. is a color in which the value of b ^* is large on the negative side.

Further, both of the two eyeglass lenses may be chromatic, and one eyeglass lens may be chromatic (hereinafter also referred to as a colored lens) and the other eyeglass lens may be achromatic (hereinafter also referred to as a clear lens). You can. That is, the ophthalmic transmissive optical article set (ophthalmic lens set) of the present disclosure includes at least one colored lens.

Furthermore, the coloring of the lens may be uniform over the entire lens or may be distributed. For example, by deepening the color of the central part of the lens, where the eyeglass lens user's line of sight tends to be concentrated, a sufficient color difference between the two eyeglass lenses can be maintained, while at the same time, the outer periphery of the lens, where the eyeglass lens user's line of sight is more likely to focus, can be darkened. By making the color lighter, the impression of the color when viewed by someone other than the user can be weakened. Here, the center portion of the lens that tends to attract the user's line of sight is determined by the user of the eyeglass lens and the shape of the eyeglass frame, and is appropriately selected from the geometric center and the optical center.
Specifically, in the present disclosure, the color difference measurement method described above performs measurement on the geometric center of a circular lens (glass lens before beading) with a diameter of 75 mm. In this case, the geometric center and optical center are the same. On the other hand, after the lens is beaded and mounted in an eyeglass frame, the geometric center and the optical center are different, so it is preferable to measure the color difference at the optical center.

Further, the two eyeglass lenses may be eyeglass lenses for vision correction that have been given a predetermined power, may be eyeglass lenses that do not have a power, or may be lenses for safety glasses. . Moreover, a progressive lens in which the power changes within one lens may be used. Alternatively, it may be a lens for magnifying glasses (glass-type loupe).
Further, the two spectacle lenses may be spectacle lenses for sunglasses that reduce part of ultraviolet rays and/or visible light.
Alternatively, the ophthalmic transmissive optical article set (ophthalmic lens set) may be an ophthalmic lens set that is separate from the glasses and can be attached to the glasses. A lens set that is separate from glasses is also called a clip-on.

Hereinafter, the spectacle lenses included in the ophthalmic transmissive optical article set (ophthalmic lens set) will be described in detail.

The lens base material that becomes the spectacle lens may be plastic or glass. To color the plastic base material, a coloring agent may be mixed when the plastic base material is cured, or at least one surface of the plastic base material after curing may be dyed using a predetermined dyeing liquid. . A plastic substrate dyed using a dyeing solution is preferable because the color is uniform regardless of the thickness of the substrate. Furthermore, the entire lens can be colored by providing a film containing a colorant on an uncolored plastic lens (clear lens) or by providing an interference film to transmit only a specific wavelength.
Similarly, for glass substrates, it is possible to mix a coloring agent into the glass itself, provide a film containing a colorant on top of an uncolored glass lens (clear lens), or provide an interference film to transmit only a specific wavelength. By doing so, the eyeglass lens itself including the functional film can be colored.

Examples of resins contained in the plastic base material that is the lens base material include acrylic resin, thiourethane resin, methacrylic resin, allyl resin, episulfide resin, polycarbonate resin, polyurethane resin, polyester resin, polystyrene resin, and polyethersulfone resin. , polymethylpentene resin, diethylene glycol bisallyl carbonate resin, polyvinyl chloride resin, and sulfur-containing copolymers.
Further, in this embodiment, the refractive index of the plastic base material at a wavelength of 546.1 nm is preferably in the range of 1.50 to 1.74, for example.

In the present disclosure, it is preferable that the dyeing liquid used for dyeing the plastic substrate contains a dye, a surfactant, and a solvent (for example, water). Furthermore, one dyeing solution may be a dyeing solution containing one type of dye, that is, one color of dye, or a mixed dyeing solution containing two or more types of dye, that is, two or more colors of dye. You can.
That is, in dyeing a plastic substrate, a plurality of dyeing liquids each having a different color may be used, or a mixed dyeing liquid containing dyes of two or more colors may be used.
The mixed dye solution may be prepared by mixing a plurality of dye solutions of different colors, or may be prepared by preparing a plurality of dyes in advance and using the prepared dyes.

The dye may be any dye as long as it falls within the limited range of luminous transmittance and the limited range of color difference between two spectacle lenses of the present disclosure.
Examples of dyes include disperse dyes, reactive dyes, direct dyes, composite dyes, acid dyes, metal complex dyes, vat dyes, sulfur dyes, fluorescent dyes, phosphorescent dyes, resin coloring dyes, and other functional dyes. can be mentioned.
Examples of the dye include yellow (Y) dye, red (R) dye, blue (B) dye, brown dye, violet dye, orange dye, and black dye.
From the viewpoint of reducing the change in the color of the eyeglass lens due to the light source, it is preferable to use two or more types of dye in combination rather than using only one type of dye.

Examples of yellow dyes include Kayalon Polyester Yellow AL, Kayalon Microester Yellow AQ-LE, Kayalon Microester Yellow C-LS, Kayaron Microester Yellow 5L-E, Kayaron Polyester Yellow 5R-SE(N)200, Kayaron Polyester Yellow BRL-S 200 (manufactured by Nippon Kayaku Co., Ltd.), Kiwalon polyester Yellow ESP eco, Kiwalon polyester Yellow KN-SE 200 (manufactured by Kiwa Chemical Industry Co., Ltd.), FSP-Yellow P-E (manufactured by Futaba Sangyo Co., Ltd.) ) and Dianix Yellow (manufactured by Dystar Japan Co., Ltd.).

Examples of red dyes include Kayalon Microester Red AUL-S, Kayalon Microester Red 5L-E, Kayalon Microester Red C-LS conc, Kayalon Microester Red DX-LS, Kayalon polyester Red AN-SE, Kayalon Polyester Red B-LE, Kayaron Polyester Rubine GL-SE 200 (manufactured by Nippon Kayaku Co., Ltd.), Kiwalon polyester Red ESP, Kiwalon polyester Red KN-SE (manufactured by Kiwa Chemical Industry Co., Ltd.), FSP-Red BL (Futaba (manufactured by Sangyo Co., Ltd.) and Dianix Red (manufactured by Dystar Japan Co., Ltd.).

Examples of blue dyes include Kayalon Polyester Blue AUL-S dye (manufactured by Nippon Kayaku Co., Ltd.), Dianix Blue AC-E (manufactured by Dystar Japan Co., Ltd.), Kiwalon Polyester Blue ESP, and Kiwalon Polyester Blue KN- SE (manufactured by Kiwa Kagaku Co., Ltd.), Kayalon Microester Blue AQ-LE, Kayalon Microester Blue 5L-E, Kayalon Microester Blue C-LS conc, Kayalon Microester Blue DX-LS conc, Kayalon Polyester Blue AN-SE, Kayalon Polyester Blue Examples include AUL-S(N) (manufactured by Nippon Kayaku Co., Ltd.) and FSP-Blue AUL-S (manufactured by Futaba Sangyo Co., Ltd.).

The surfactant is not particularly limited as long as it can uniformly disperse the dye in a solvent such as water.
Examples of the surfactant include ionic surfactants (eg, anionic surfactants, cationic surfactants, etc.) and nonionic surfactants.

Examples of the solvent include water and organic solvents.
Examples of organic solvents include alcohol solvents, ketone solvents, ether solvents, ester solvents, hydrocarbon solvents, halogenated hydrocarbon solvents, amide solvents, sulfone solvents, and sulfoxide solvents. It will be done.

The dyeing liquid may contain various additives such as a pH adjuster, a viscosity adjuster, a leveling agent, a matting agent, a stabilizer, an ultraviolet absorber, and an antioxidant, as necessary.

The content of the dye contained in the dyeing solution is preferably 0.001 to 10% by mass, more preferably 0.01 to 5% by mass, based on the total mass of the dyeing solution.
Further, the content of the surfactant contained in the staining solution is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, based on the total mass of the staining solution.

Examples of methods for obtaining colored lenses by dyeing at least one surface of the plastic substrate include the following three methods.
(1) A method of coating the surface of a plastic substrate with a dyeing liquid and heating it to dye the surface of the plastic substrate (coating method)
(2) A method of dyeing the surface of a plastic substrate by immersing it in a heated dyeing solution (dip method)
(3) A method of coating a transfer medium with a sublimable dye, placing a plastic base material near the transfer medium and heating it, and dyeing the surface of the plastic base material (sublimation dyeing method)
Among these three methods, the above coating method (1) is preferable because it requires less dyeing solution and can reduce production costs. On the other hand, the dipping method (2) above is preferable because it is easy to apply uniformly, and the sublimation dyeing method (3) above is preferable because it is easy to pattern, so they should be selected depending on the application. Bye. These methods may be used alone or in combination.

Examples of the method for applying the dye solution to the plastic substrate in the above-mentioned coating method include conventional application methods such as brush coating, dip coating, spin coating, roll coating, spray coating, flow coating, and inkjet coating.
Regarding application, it may be coated on one side of the plastic substrate, or it may be coated on both sides to further increase the dyeing density.
The coating thickness of the dyeing liquid on the plastic substrate can be adjusted as appropriate, and can be in the range of 0.01 to 10 μm, for example.

When dyeing (coloring) a plastic substrate using the coating method, the dye in the dyeing solution is applied to the surface of the plastic substrate by applying heat treatment after coating the surface of the plastic substrate with the dyeing solution. Penetration and diffusion are preferred.
Regarding the heating conditions for the plastic substrate coated with the dyeing solution, the heating temperature is preferably 70 to 180°C, and the heating time is preferably 10 to 180 minutes. In addition to air oven heating, heating methods include far-infrared irradiation heating and UV irradiation heating.
In dyeing using the coating method, when dyeing a plastic substrate with a gentle concentration gradient (coloring process), after coating the lens with the dyeing solution, the coating solution surface (dyeing solution surface) is gradually heated in the heated area. By heating the plastic substrate while changing the concentration, an amount of dye corresponding to the concentration gradient can be infiltrated into the interior of the plastic substrate.

After coating a plastic substrate with the dyeing solution and heat-treating the plastic substrate coated with the dyeing solution, the plastic substrate may be washed.
The method for cleaning the plastic substrate is not particularly limited as long as the coating layer (applied dye solution) on the surface of the plastic substrate can be removed, but wiping with an organic solvent or cleaning with an alkaline detergent is preferable.

When dyeing a plastic base material by the above-mentioned dipping method, the plastic base material is immersed in a dyeing liquid, and the dye in the dyeing liquid can be permeated and diffused from the surface of the plastic base material.
In dyeing by the dip method, it is preferable to immerse the plastic substrate in a dyeing liquid heated to 80 to 95°C.
After completion of dipping, the plastic substrate may be washed. Examples of cleaning methods for plastic substrates include wiping with a solvent.

The spectacle lens may include a functional film. The functional film is a film disposed on the lens base material such as the above-mentioned plastic base material. Examples of the functional film include polarizing film, photochromic film, primer film, hard coat film, interference film such as anti-reflection film, and , water- and oil-repellent films.
Note that when the spectacle lens has a functional film disposed on the lens base material as described above, the entire spectacle lens including the functional film satisfies the above-described relationship between luminous transmittance and color difference.

The primer film is a layer used to improve the adhesion between members arranged on both sides of the film.
The material constituting the primer film is not particularly limited, and any known material can be used, and for example, resin is mainly used. The type of resin used is not particularly limited, and examples include polyurethane resins, epoxy resins, phenol resins, polyimide resins, polyester resins, bismaleimide resins, and polyolefin resins, with polyurethane resins being preferred.
The method for forming the primer film is not particularly limited, and any known method can be adopted. For example, a primer film-forming composition containing a predetermined resin is applied onto an eyeglass lens, and if necessary, a curing treatment is performed. Examples include a method of forming a primer film.

The hard coat film is a layer that provides scratch resistance to eyeglass lenses.
The hard coat film is preferably one having a pencil hardness of "H" or higher according to the test method specified in JIS K5600.

As the hard coat film, a known hard coat film can be used, such as an organic hard coat film, an inorganic hard coat film, and an organic-inorganic hybrid hard coat film, such as those used in the field of eyeglass lenses. In general, organic-inorganic hybrid hard coat films are used.
The method for forming the hard coat film is not particularly limited, and methods include applying a composition for forming a hard coat film onto eyeglass lenses to form a coating film, and then subjecting the coating film to a curing treatment such as light irradiation treatment. Can be mentioned.

The structure of the antireflection film is not particularly limited, and may be a single layer structure or a multilayer structure.
As the antireflection film, an inorganic antireflection film is preferable. An inorganic antireflection film is an antireflection film made of an inorganic compound.
In the case of a multilayer structure, a structure in which low refractive index layers and high refractive index layers are alternately laminated is preferable. Note that the material constituting the high refractive index layer includes, for example, titanium, zirconium, aluminum, niobium, tantalum, or lanthanum oxide. Furthermore, examples of the material constituting the low refractive index layer include silica oxide.
The method for producing the antireflection film is not particularly limited, and examples thereof include dry methods such as vacuum evaporation, sputtering, ion plating, ion beam assist, and chemical vapor deposition (CVD).

Here, in the above example, the ophthalmic lenses included in the ophthalmic lens set are configured to be a right-eye spectacle lens and a left-eye spectacle lens, but the present invention is not limited to this, and the ophthalmic lenses may be contact lenses. You can. That is, the ophthalmic lens set includes a right eye contact lens and a left eye contact lens, and the color difference in L ^* a ^* b ^* display between the right eye contact lens and the left eye contact lens is more than 0.23, and , 33.8.
When the color difference between the right eye contact lens and the left eye contact lens satisfies the above range, the effect of improving visual contrast can be obtained. Moreover, the two contact lenses may be contact lenses for vision correction provided with a predetermined power, or may be contact lenses without a power.

<Binoculars>
The ophthalmic transmissive optical article set of the present disclosure may be used as an optical article for binocular viewing. Examples of the optical article include binoculars. The binoculars may be a binocular telescope or a binocular microscope.
An example of the above-mentioned binocular telescope is a binocular telescope 60 having the configuration shown in the cross-sectional view of FIG. 3, for example. Specifically, the binocular telescope 60 includes a right-eye light-shielding tube 61R and a left-eye light-shielding tube 61L. The right-eye light-shielding tube 61R includes, in order from the user side, a right-eye eyepiece group 62R, a right-eye roof prism 64R, a right-eye auxiliary prism 66R, and a right-eye objective lens group 68R. The left-eye light-shielding tube 61L includes, in order from the user side, a left-eye eyepiece group 62L, a left-eye roof prism 64L, a left-eye auxiliary prism 66L, and a left-eye objective lens group 68L.

In the binocular telescope 60, the right-eye eyepiece group 62R, the right-eye roof prism 64R, the right-eye auxiliary prism 66R, and the right-eye objective lens group 68R correspond to the right-eye optical system, and the left-eye eyepiece group 62L corresponds to the right-eye eyepiece group 62R. , the left-eye roof prism 64L, the left-eye auxiliary prism 66L, and the left-eye objective lens group 68L correspond to the left-eye optical system. That is, the binocular telescope 60 includes an optical system for the left eye and an optical system for the right eye. Here, the color difference in L ^* a ^* b ^* display between the left eye optical system and the right eye optical system is more than 0.23 and less than 33.8. This provides the binocular telescope 60 with the effect of improving visual contrast.

In addition, in the binocular telescope 60, if the color difference between the entire optical system for the right eye and the entire optical system for the left eye is more than 0.23 and less than 33.8, the lenses and prisms constituting each optical system are It may be colored either way. For example, the eyepiece for the right eye and the eyepiece for the left eye may satisfy the above color difference, the objective lens for the right eye and the objective lens for the left eye may satisfy the above color difference, and the roof prism for the right eye and the objective lens for the left eye may satisfy the above color difference. The roof prism for the left eye may satisfy the above color difference, or the auxiliary prism for the right eye and the auxiliary prism for the left eye may satisfy the above color difference. That is, the above-described ophthalmic transmissive optical article set (ophthalmic lens set) may be used as a lens constituting the optical system of a binocular telescope.
Alternatively, if the color difference between the entire optical system for the right eye and the entire optical system for the left eye is more than 0.23 and less than 33.8, two or more of the lenses and prisms that make up each optical system are colored. All lenses and prisms may be colored.

The method for coloring the eyepiece lenses or objective lenses used in the binoculars is not particularly limited, and the same method as for spectacle lenses can be used. As the base material of the eyepiece lens and the objective lens, the same base material as the eyeglass lens can be used.
Further, the method for coloring the auxiliary prism or roof prism used in the binoculars is not particularly limited, and the same method as for spectacle lenses can be used. As the base material of the auxiliary prism and the roof prism, for example, known optical glass can be used.

The binocular telescope 60 may include a known configuration other than the configuration shown in FIG. Known configurations include intermediate lenses, optical filters, and the like. The above configuration may also correspond to a component of an optical system.
Further, the binocular telescope 60 shown in FIG. 3 has a configuration using a right-eye roof prism 64R, a right-eye auxiliary prism 66R, a left-eye roof prism 64L, and a left-eye auxiliary prism 66L. Instead, a configuration using one set of right-eye Porro prisms and one set of left-eye Porro prisms may be used.

Further, although FIG. 3 shows an aspect of the binocular telescope 60, the binoculars of the present disclosure may be a binocular microscope. In the binocular microscope of the present disclosure, as well as the above-mentioned binocular telescope, among the optical systems from the objective lens to the eyepiece, predetermined components are installed in the right eye optical system and the left eye optical system. A function of providing color difference can be added. Note that there are binocular microscopes with various configurations, such as stereoscopic microscopes, industrial/biological microscopes, etc., and the present disclosure can be applied to any of them.

In the binoculars of the present disclosure, visual contrast in binocular viewing is also improved.

<Transmissive optical article for eyes>
An example of an ophthalmic transmissive optical article is a ophthalmic transmissive optical article 52 used in goggles 50 shown in FIG. 2, for example.
In FIG. 2, goggles 50 include an ophthalmic transmissive optical article 52, a frame 56 on which the ophthalmic transmissive optical article 52 is attached, and a band 58 for attaching the goggles 50 to the user's head. have
Frame 56 and band 58 are similar to frames and bands used in known goggles.

The ophthalmic transmissive optical article 52 has two regions of different colors, a right eye region 53 and a left eye region 54. In the example shown in FIG. 2, when viewed from the user, the area to the right of the center of the ophthalmic optical article 52 is the right eye area 53, and the area to the left of the center is the left eye area 54.
The color difference in L ^* a ^* b ^* display between the right eye area 53 and the left eye area 54 is more than 0.23 and less than 33.8.
When the color difference between the right eye area 53 and the left eye area 54 satisfies the above range, the effect of improving visual contrast can be obtained.
The preferred ranges of the luminous transmittance and color difference of the right eye region 53 and the left eye region 54 are the right eye spectacle lens 11 and the left eye spectacle lens 12 of the ophthalmic transmissive optical article set (ophthalmic lens set) 10 described above. This is the same as the preferred range of color difference.

In the example shown in FIG. 2, the ophthalmic transmissive optical article 52 has a structure consisting of a right eye region 53 and a left eye region 54, but the present invention is not limited to this, and the ophthalmic transmissive optical article 52 includes At least a part of the area including the area corresponding to the visual field of the user's right eye is the right eye area 53, and at least a part of the area including the area corresponding to the visual field of the user's left eye is the left eye area 54. Good too. That is, the ophthalmic transmissive optical article 52 may have regions other than the right eye region 53 and the left eye region 54.

The ophthalmic transmissive optical article 52 is obtained by coloring at least one of the region that will become the right eye region 53 and the region that will become the left eye region 54 of the plastic base material. That is, in the ophthalmic transmissive optical article 52, both the right eye region 53 and the left eye region 54 may be chromatic, or one may be chromatic and the other may be achromatic.

As the material of the plastic base material of the ophthalmic transmissive optical article 52, the same material as the lens base material explained in the above-mentioned ophthalmic transmissive optical article set (ophthalmic lens set) 10 can be used.
Further, as a method for coloring the plastic base material of the ophthalmic transmissive optical article 52, the same coloring method as in the above-mentioned ophthalmic transmissive optical article set (ophthalmic lens set) can be mentioned. Further, as the staining liquid used for staining when coloring by staining, a liquid similar to the staining liquid described in the above-mentioned ophthalmic transmission optical article set (ophthalmic lens set) 10 can be used.

As a method of dyeing the surface of the plastic base material to obtain the ophthalmic transmission type optical article 52 having the right eye region 53 and the left eye region 54, for example, the above-described dyeing method by masking a portion that will become one region can be used. Dye the other area to the desired color using the same coating method, dip method, sublimation dyeing method, etc. Next, mask the other dyed area and apply the same method to the other area. It may be dyed in another desired color.

Hereinafter, the ophthalmic transmissive optical article set of the present disclosure will be described in more detail using Examples and Comparative Examples, but the present embodiment is not limited to these Examples in any way.

(Preparation of staining solution)
First, a dyeing solution was prepared using a dye, a surfactant, and pure water.
Take pure water (1000 parts by mass) in a container, and add FSP YELLOW FL dye (manufactured by Futaba Sangyo Co., Ltd.) (2.0 parts by mass) as a yellow dye and Nikka Sunsalt #7000 (trade name, manufactured by Nicca Chemical Co., Ltd.) ( 1.0 parts by mass) was added thereto, and this was designated as staining solution 1. Further, pure water (1000 parts by mass) was placed in a container, and FSP BLUE AULS dye (manufactured by Futaba Sangyo Co., Ltd.) (2.0 parts by mass) as a blue dye and Nikka Sunsalt #7000 (1.0 parts by mass) were added. This was designated as staining solution 2. Further, pure water (1000 parts by mass) was placed in a container, and FSP RED BL dye (manufactured by Futaba Sangyo Co., Ltd.) (2.0 parts by mass) as a red dye and Nikka Sunsalt #7000 (1.0 parts by mass) were added. This was designated as staining solution 3.

(Dyeing of plastic lenses and production of colored lenses 1)
Next, the three prepared staining solutions 1, 2, and 3 were heated to 90°C, and a plastic lens with a refractive index of 1.60 (manufactured by Nikon Essilor, Nikon Light 3AS, size 75φ, center thickness 2mm) was inserted. It was immersed in each of the staining solutions 1, 2, and 3 to produce pale reddish-purple lenses.
Next, on the surface of the obtained colored lens, a urethane-based primer film (impact resistance improving coat film) with a thickness of about 1 μm, a silicone-based scratch resistance improving hard coat film with a thickness of about 2 μm, and a thick film were coated using a vacuum evaporation method. A multilayer antireflection coating film formed of an inorganic oxide with a diameter of about 0.3 μm and a fluorine-based water- and oil-repellent film were arranged in this order to obtain the desired colored lens 1.

(Dyeing of plastic lenses and production of colored lenses 2 to 5)
A plastic lens with a refractive index of 1.60 (Nikon Light 3AS) was immersed in the above two staining solutions 2 and 3, and a light blue-purple lens was produced in the same manner as colored lens 1 except that the immersion time was changed. did. On the surface of the obtained colored lens, similarly to colored lens 1, a urethane primer film, a silicone scratch resistance improving hard coat film, a multilayer antireflection coating film, and a water- and oil-repellent film were arranged in this order, The desired colored lenses 2 to 5 were obtained.

(Dyeing of plastic lenses and production of colored lenses 6 to 19)
A plastic lens (Nikon Light 3AS) with a refractive index of 1.60 was immersed in one or more of the same three dyeing solutions 1, 2, and 3 as in colored lens 1, except that the immersion time was changed. Lenses of various colors were produced in the same manner as Lens 1. On the surface of the obtained colored lens, similarly to colored lens 1, a urethane primer film, a silicone scratch resistance improving hard coat film, a multilayer antireflection coating film, and a water- and oil-repellent film were arranged in this order, The desired colored lenses 6 to 19 were obtained.

(Production of uncolored lenses 1 and 2)
The surface of a plastic lens (Nikon Light 3AS) with a refractive index of 1.60 is coated with a urethane primer film, a silicone scratch-resistant hard coat film, a multilayer antireflection coating film, and a water-repellent coating, similar to the colored lens 1. By arranging the oil films in this order, desired non-tinted lenses 1 and 2 were obtained.

(Lens evaluation)
The L ^* a ^* b ^* coordinates of each lens produced were measured in the manner described above using a U-4100 spectrophotometer manufactured by Hitachi High Technologies. At this time, a D65 light source (field of view of 2 degrees) was used as the reference light.

Table 1 shows the luminous transmittance Y, L ^* a ^* b ^* coordinates, and the color tone of the lens when observed under a white LED light. Untinted lenses were recognized as pale gray due to the color of the plastic material itself, the ultraviolet absorber and bluing agent added to the lens, and the transmitted light characteristics of the multilayer anti-reflection coating.

[Examples 1 to 10, Comparative Examples 1 to 3]
A right-eye lens and a left-eye lens were combined in the combinations shown in Table 2 below to form ophthalmic lens sets of Examples and Comparative Examples. The color difference ΔE00 of each lens set and the absolute value ΔY of the difference in luminous transmittance are also shown.

[evaluation]
A black Landolt ring was displayed on a white background of a liquid crystal display (CS Pola 600 manufactured by Essilor Instruments) for visual acuity measurement. The brightness of the liquid crystal display was measured with a spectrophotometer SR-3AR manufactured by Topcon House Co., Ltd. and was 202 cd/m ² . The room was illuminated downward by a white LED light installed on the ceiling, and the illuminance was 300 lux when measured upward at the location where the liquid crystal display was installed.
Subjects corrected their vision with spectacle lenses or contact lenses as necessary, so that the Landolt ring with a brightness contrast setting of 100% was clearly visible when observed from a position 2.5 meters away from the liquid crystal display. Note that the measured value of brightness contrast was 99%.
Next, the luminance contrast of the Landolt ring was set to 10%, and the Landolt ring was reduced to a size where the direction of the break in the Landolt ring could be barely discerned. Note that the actual value of the brightness contrast was 13%. When each eye lens set was worn on a subject, it was determined whether visual contrast improved and the break in Landolt's ring was more clearly visible.

When each eye lens set was worn by a subject, it was evaluated whether visual contrast improved and Landolt's ring was more clearly visible. In order to eliminate the effects of the shape and frame of the eyeglass lenses, the evaluation was based on the pair of non-tinted lenses shown in Comparative Example 1, and was evaluated based on the color difference between the two eyeglass lenses to determine whether the eyes could be seen more clearly than in Comparative Example 1. did.
In addition, it was determined whether the glasses could be worn without worrying about the color difference (binocular rivalry) and the difference in luminous transmittance between the two spectacle lenses.
This kind of evaluation was conducted on 5 subjects, and the evaluation was based on the number of subjects who felt the effect. The results are shown in Table 3.

Compared to Comparative Example 1 where ΔE00 is 0.13, 4 out of 5 people felt the effect of improving visual contrast in Example 1 where ΔE00 was 0.40. Furthermore, when wearing the glasses, 5 out of 5 people judged that they could wear the glasses without worrying about the difference in color or luminous transmittance between the two glasses lenses. In Examples 2 to 10, the larger the ΔE00, the stronger the effect of improving visual contrast, and 5 out of 5 people felt the effect of improving visual contrast.
In Examples 4 to 8, the lens color of the right eye was fixed, and the lens color of the left eye was varied. Preferred color combinations differed depending on the subject's preferences, but the effect of improving visual contrast was obtained with any color combination.
In Comparative Example 2 in which ΔE00 was 0.23, no visual contrast improvement effect was observed compared to Comparative Example 1. In addition, in Comparative Example 3, although the visual contrast improvement effect was confirmed, the color difference ΔE00 between the two spectacle lenses was as large as 33.78, which caused discomfort due to binocular rivalry, and 5 out of 5 people were unable to wear the glasses. It was judged.

1 Glasses 10 Ophthalmic transmission type optical article set (ophthalmic lens set)
11 Spectacle lens for right eye 12 Spectacle lens for left eye 14 Spectacle frame 50 Goggles 52 Transmissive optical article for eyes 53 Region for right eye 54 Region for left eye 56 Frame 58 Band 60 Binocular telescope 61R Light shielding tube for right eye 61L Light shielding tube for left eye 62R For right eye Eyepiece group 62L Eyepiece group for left eye 64R Roof prism for right eye 64L Roof prism for left eye 66R Auxiliary prism for right eye 66L Auxiliary prism for left eye 68R Objective lens group for right eye 68L Objective lens group for left eye

Claims (12)

An ophthalmic transmissive optical article set consisting of two ophthalmic transmissive optical articles,
At least one of the two ophthalmic transmission optical articles is dyed,
When a CIE standard illuminant D65 with a 2-degree visual field is used as a reference light, the color difference ΔE00 of the two ophthalmic transmission optical articles calculated based on CIEDE2000 is 0.4 or more and 20 or less. Transmissive optical article set. An ophthalmic lens set consisting of two ophthalmic lenses,
At least one of the two ophthalmic lenses is dyed,
An ophthalmic lens set, wherein a color difference ΔE00 between the two ophthalmic lenses calculated based on CIEDE2000 is 0.4 or more and 20 or less when a CIE standard illuminant D65 with a 2-degree visual field is used as a reference light. The ophthalmic lens set according to claim 2, wherein the ophthalmic lens is a spectacle lens or a contact lens. An ophthalmic transmissive optical article having two regions of different colors, the article comprising:
At least one of the two regions is stained,
A transmissive optical article for eyes, wherein the color difference ΔE00 between the two regions calculated based on CIEDE2000 is 0.4 or more and 20 or less when a CIE standard illuminant D65 with a 2-degree visual field is used as a reference light. Glasses,
including spectacle lenses for the left eye and spectacle lenses for the right eye;
At least one of the two eyeglass lenses is dyed,
Eyeglasses , wherein the color difference ΔE00 between the two eyeglass lenses calculated based on CIEDE2000 is 0.4 or more and 20 or less when a CIE standard light source D65 with a 2-degree visual field is used as a reference light. Binoculars,
including optics for the left eye and optics for the right eye;
The colors of the two optical systems have a physically complementary color relationship,
Binoculars, wherein the color difference ΔE00 between the two optical systems calculated based on CIEDE2000 is 0.4 or more and 20 or less when a CIE standard light source D65 with a 2-degree visual field is used as a reference light. At least one of the two optical systems is dyed,
The binoculars according to claim 6, wherein a color difference ΔE00 between the two optical systems is 0.4 or more and 20 or less. The ophthalmic transmissive optical article set according to claim 1, wherein a difference in luminous transmittance between the two ophthalmic transmissive optical articles is 30% or less. The ophthalmic lens set according to claim 2, wherein the difference in luminous transmittance between the two ophthalmic lenses is 30% or less. The ophthalmic transmissive optical article according to claim 4, wherein the difference in luminous transmittance between the two regions is 30% or less. The eyeglasses according to claim 5, wherein the difference in luminous transmittance between the two eyeglass lenses is 30% or less. The binoculars according to claim 6 or 7, wherein the difference in luminous transmittance between the two optical systems is 30% or less.

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