JP6270306B2 - Eyeglass lenses - Google Patents

Description

  The present invention relates to a spectacle lens and a method for manufacturing a spectacle lens.

  In recent years, spectacle lenses including sunglasses have sports and vehicle driving applications in addition to vision correction and eye protection. A color lens colored in a desired color corresponding to these various uses is known.

As a conventional example of a color lens, outdoor sports such as fishing to see the floating movement using red and orange colors on the surface where dazzling sun rays diffusely reflect, and when driving a vehicle to identify red lights and brake lights For example, there is a pair of eyeglasses (Patent Document 1).
Patent Document 1 discloses resin glasses having a visible light transmittance of 20 to 50%, a transmittance of 540 nm to 560 nm of 10 to 45%, and a transmittance of 650 nm of 70 to 90%.

JP 2010-204383 A

  In the conventional example shown in Patent Document 1, since the transmittance is set so that red and orange colors appear to be emphasized, there is a merit that it is easy to identify a red signal and a brake lamp when driving the vehicle, but other than that It is not suitable for the application. In other words, in the conventional example, a moving object such as a pedestrian, an obstacle, or a rear part of a preceding vehicle is not always easily visible when the vehicle is driven, and further, in a dark situation such as at night or in a tunnel. When driving a vehicle in the country, traffic signs displayed in blue are not always easily recognized.

  An object of the present invention is to provide a spectacle lens and a spectacle lens that can easily recognize a traffic sign in a dark situation such as at night or in a tunnel, and that can easily recognize a moving object regardless of a light or dark situation. It is in providing the manufacturing method of.

  One aspect of the present invention is colored in blue or green, and when worn as eyeglasses, the first region is located on the top of the wearer's head and is colored yellow and faces the wearer's pupil in the first eye position. A spectacle lens including a second region located opposite to the first region with respect to the lens center.

In this configuration, the spectacle lens wearer visually recognizes an object positioned relatively above the horizontal through the first region of the spectacle lens. As seen from the wearer who drives the vehicle, there is a traffic sign attached to the upper part of the column or the pedestrian bridge in the object located relatively above the horizontal. A general traffic sign is configured with white letters or designs on a blue background, and on a car-only road, it is configured with white letters or designs on a green background. Therefore, by coloring the first region from blue to green, the visibility of the white part in the label can be improved by the original transmittance of the lens and the absorption of the short wavelength to the intermediate wavelength.
Then, the spectacle lens wearer visually recognizes an object positioned relatively below the horizontal through the second region of the spectacle lens. The objects located relatively below the horizontal as seen from the wearer who drives the vehicle include moving vehicles and pedestrians. Since the second region is colored in yellow, a moving vehicle, a pedestrian, and the like can be easily seen. In general, yellow has a characteristic that the contrast of the visual field is improved and the moving object is easily recognized because the light intensity is reduced in a wide wavelength range of visible light. Therefore, by coloring the second region yellow, it is possible to improve the visibility of pedestrians, obstacles, and the rear part of the preceding vehicle mainly during vehicle driving from daytime to nighttime.

  One embodiment of the present invention is a spectacle lens further including a transparent third region including the lens center.

  In this configuration, since the third region located between the first region and the second region is transparent, the luminous transmittance at and around the lens center is increased. Therefore, the object can be easily visually recognized at night or in a dark situation such as in a tunnel.

  One embodiment of the present invention is a spectacle lens in which the first region is colored blue to blue-green, and further includes a third region that is colored green including the center of the lens.

  In this structure, the 3rd area | region located between a 1st area | region and a 2nd area | region is colored green. Since it is generally known that the average sensitivity of the three types of cones in the daytime bright conditions works best at 555 nm of green, by setting the third region to the green wavelength region, day and night Alternatively, visibility inside and outside the tunnel in the daytime can be ensured.

  In one aspect of the present invention, the boundary between the third region and the first region is a gradation of the color of the third region and the color of the first region, and the third region and the second region The boundary is a spectacle lens that is a gradation between the color of the third region and the color of the second region.

  In this configuration, the boundary between the first region and the third region and the boundary between the second region and the third region are not clearly color-coded, so that even if the line of sight is moved, there is little eye fatigue. Become.

  According to another aspect of the present invention, a first ink having a blue to green wavelength region is applied to a first region of a lens base located on the top of the wearer's head when worn as spectacles by ink-jetting. Providing a second region by applying a yellow second ink to the second region located opposite to the first region with respect to the center of the lens facing the pupil at the first eye position by inkjet. Providing a spectacle lens.

  In this configuration, since the first region and the second region are provided on the lens base material by ink jetting that allows easy color setting, it is possible to accurately color a desired wavelength.

  In one embodiment of the present invention, the first ink is a primer composition containing a blue to green coloring material, and the second ink is a primer composition containing a yellow coloring material, and the first region and A method for manufacturing a spectacle lens, further comprising applying a hard coat composition after forming the second region.

  In this configuration, since the first region and the second region can be formed by providing the primer layer, when the first region and the second region are formed separately from the formation of the primer layer. In comparison, a color lens can be manufactured more efficiently. Furthermore, a 1st area | region and a 2nd area | region can be protected by providing a hard-coat layer.

(A) is a front view of the spectacle lens concerning embodiment of this invention, (B) is a fragmentary sectional view of a spectacle lens. The graph which shows the result of having measured the spectral transmittance in the 1st field, the 2nd field, and the 3rd field. Schematic which shows an inkjet coating apparatus. The graph which shows the spectral luminous efficiency of photopic and scotopic vision. (A) (B) is a front view of the spectacle lens concerning the modification of this invention, respectively.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1A shows the front of the spectacle lens 1 of this embodiment. The spectacle lens 1 applied to the present embodiment includes a single focus lens and a progressive power lens, and further includes a finished lens and a semi-finished lens.
In FIG. 1A, the eyeglass lens 1 has a lens center C at the intersection of the X axis extending in the horizontal direction and the Y axis extending in the vertical direction. Here, the lens center C is a position facing the pupil of the wearer in the first eye position (the position of the eye when the wearer looks in the horizontal direction), and is optical when the spectacle lens 1 is a single focus lens. The center corresponds to the fitting point in the progressive-power lens.
The eyeglass lens 1 includes a first region 11 provided on the top of the lens center C when wearing (the Y axis plus side) and a side opposite to the first region 11 across the lens center C (on the Y axis). A second region 12 provided on the negative side) and a third region 13 including the lens center C provided between the first region 11 and the second region 12. The outlines of the first region 11, the second region 12, and the third region 13 are provided with a margin with respect to the outer periphery of the spectacle lens 1. This is because the lens mounted on the spectacle frame is processed into a lens shape with a size within the region 13, and the lens outer peripheral portion is deleted by the lens processing.

The boundary line X1 between the first region 11 and the third region 13 is a straight line along the X axis, and the dimension (distance between the boundary line X1 and the X axis) between the first region 11 and the X axis is L1. It is.
The boundary line X2 between the second region 12 and the third region 13 is linear along the X axis, and the dimension (distance between the boundary line X2 and the X axis) between the second region 12 and the X axis is L2. It is. The dimension L1 and the dimension L2 may be the same or different.
That is, the boundary line X1 of the first region 11 and the boundary line X2 of the second region 12 are separated by a dimension (L1 + L2). Note that the predetermined areas including the boundary lines X1 and X2 are gradations as will be described later, so the boundary lines X1 and X2 are not clearly visible line segments.
In the present embodiment, the dimensions L1 and L2 are approximately 3 mm or more and 5 mm or less, respectively. The reason for “substantially” is that, as described above, the boundary is based on gradation and the boundary does not exist clearly. The reason why the upper limit of the dimensions L1 and L2 is set to 5 mm is that the average iris of a human iris (especially Japanese) is 12.5 mm and the upper and lower color portions are not completely covered. . The size of the pupil is usually about 3 to 4 mm from day to night, and is 2 mm for miosis and 5 mm for mydriasis. Therefore, it is preferable that at least 3 mm is not covered (L1 + L2 is 3 mm or more). Since the iris size varies among individuals, L1 and L2 may be set in accordance with the size of the wearer's iris.

The first region 11 is colored blue-green (wavelength of 460 nm or more and less than 500 nm), the second region 12 is colored yellow (wavelength of 570 nm or more and less than 590 nm), and the third region 13 is It is colored green (wavelength of 500 nm or more and less than 570 nm).
Here, the blue-green color (wavelength of 460 nm or more and less than 500 nm) is 7.5B6 / 10 in terms of Munsell value, and if expressed in L * a * b * dye system by CIE, L * is an initial color tone. 90 or more, a * is −5 to −10, and b * is 5 to −10.
Yellow (wavelength of 570 nm or more and less than 590 nm) is 5.0Y8.5 / 14 in the Munsell value, and in L * a * b * by CIE, L * is 90 or more, A * is 5 to −5, b * Is 10-15.
Green (wavelength of 500 nm or more and less than 570 nm) is 2.5G6.5 / 10 in terms of Munsell value. In L * a * b * by CIE, L * is 90 or more, A * is -5 to- 15, b * is 5-10.

FIG. 2 shows the results of measuring the spectral transmittance in the first region 11, the second region 12, and the third region 13.
As shown in FIG. 2, the peak of the transmittance P ₁₁ in the first region 11 is about 370 nm to 500 nm, which includes the blue-green wavelength range of 460 nm to less than 500 nm. It turns out that it is colored.
Similarly, the peak of the transmittance _{P 12} of the second region 12 is approximately 540nm or more, since this is including 570nm~590nm the wavelength range of yellow, it can be seen that is colored yellow was targeted. Peak of the transmittance _{P 13} of the third region 13 is approximately 500Nm～560nm, since this is contained in a green wavelength range 500Nm～570nm, it can be seen that is colored green with the goal. The peak of the second region includes the red wavelength region, but the appearance is yellow.

In the present embodiment, the luminous transmittance is obtained based on the measurement result obtained in FIG.
The luminous transmittance was measured using an integrating sphere type spectral transmittance meter (DOT series: Murakami Color Research Laboratory). The numerical value is calculated by a method according to JIS R3212.
The calculation formula is shown by the formula (1).

ここで、Ｙ：視感透過率（可視光線透過率）
Ｓ（λ）：測定用イルミナントの分光分布の波長λにおける値で、ＪＩＳＺ８７２０に定める標準イルミナントＡ又はＤ６５の分光分布の値
ｙ（λ）：XYZ表色系における等色関数の値
Ｔ（λ）：プラスチックレンズの分光立体角透過率
Δλ：三刺激値計算のための波長感覚（１０ｎｍ）

Here, Y: luminous transmittance (visible light transmittance)
S (λ): Value of spectral distribution of measurement illuminant at wavelength λ, spectral distribution of standard illuminant A or D65 defined in JISZ8720
y (λ): value of color matching function in XYZ color system
T (λ): Spectral solid angle transmittance of plastic lens
Δλ: wavelength sense for tristimulus value calculation (10 nm)

From the equation (1), the luminous transmittance of the first region 11, the second region 12, and the third region 13 was obtained. As a result, the luminous transmittance of the first region 11 was 80.20%, the luminous transmittance of the second region 12 was 85.18%, and the luminous transmittance of the third region was 77.91%.
All of these luminous transmittances conform to the standard of JIST7333 that the transmittance of 75% or less is unsuitable for night driving.

  The boundary line X1 between the third region 13 and the first region 11 and the vicinity thereof have a gradation in which the color gradually changes from one of the third region 13 and the first region 11 to the other. Similarly, the boundary line X <b> 2 between the third region 13 and the second region 12 and the vicinity thereof is a gradation in which the color gradually changes from one of the third region 13 and the second region 12 to the other.

In FIG. 1B, the spectacle lens 1 has a primer layer 3, a hard coat layer 4, and an antireflection layer 5 laminated in this order on the surface of a lens substrate 2.
The material of the lens substrate 2 is not particularly limited, but includes (meth) acrylic resins, styrene resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resins, polyesters. Resins, polyether resins, urethane resins obtained by reaction of isocyanate compounds with hydroxy compounds such as diethylene glycol, thiourethane resins obtained by reacting isocyanate compounds with polythiol compounds, and having one or more disulfide bonds in the molecule ( Examples include resins obtained by curing a polymerizable composition containing a thio) epoxy compound.
The primer layer 3 is for improving the adhesiveness with the hard coat layer 4, and includes a primer composition containing a water-dispersed polyurethane resin, ethylene glycol, a high boiling point solvent, and a silicon surfactant, And a coloring material for coloring.
The hard coat layer 4 is formed from, for example, a melamine resin, a silicon resin, a urethane resin, an acrylic resin, or the like.
The antireflection layer 5 is formed by sequentially laminating a low refractive index layer and a high refractive index layer. Examples of the material of the antireflection layer 5 include SiO ₂ , SiO, ZrO ₂ , TiO ₂ , TiO, Ti ₂ O ₃ , Ti ₂ O ₅ , Al ₂ O ₃ , TaO ₂ , Ta ₂ O ₅ , NbO, and Nb. _{2 O 3, NbO 2, Nb} 2 O 5, CeO 2, MgO, Y 2 O 3, SnO 2, MgF 2, WO 3 and the like.

Next, a method for manufacturing the spectacle lens 1 according to the present embodiment will be described.
The primer layer 3 is formed on the lens substrate 2 prepared in advance using the ink jet coating apparatus shown in FIG.
In FIG. 3, the inkjet coating apparatus includes a head 121 that ejects a plurality of ink droplets 110 onto the surface 2S of the lens substrate 2, a drive unit 122 that reciprocates the head 121, and a holding unit 123 that holds the spectacle lens 1. , A tank 124 for supplying a primer composition constituting the primer layer 3 to the head 121, a head 121, a driving unit 122, a holding unit 123, and a control unit 125 for controlling the tank 124. As an inkjet coating device, for example, PX5500 manufactured by Seiko Epson Corporation can be used.

The head 121 has a plurality of minute openings (nozzles), and minute ink droplets 110 are ejected from the openings by an inkjet method. Examples of the ink jet method include a piezo method and a thermal method.
The drive unit 122 is a mechanism similar to a carriage mechanism of a known inkjet printer, and includes a carriage motor 122C that scans the carriage 122B via a timing belt 122A and the like. A head 121 is mounted on the carriage 122B. The carriage 122B further includes a tank 124.
The holding unit 123 holds the plastic lens substrate 2. The holding unit 123 is transported in the sub-scanning direction by a transport unit (not shown).
The control unit 125 includes a CPU and the like, and controls the head 121, the drive unit 122, the holding unit 123, the transport unit, and the tank 124. In the present embodiment, the control unit 125 controls the ejection amount of droplets ejected from the nozzles by controlling the driving of the head 121.

The tank 124 is an ink jet coating cartridge, and two types, a first tank 1241 and a second tank 1242 are prepared.
The first ink stored in the first tank 1241 contains pure water in an amount of 50% by mass to 70% by mass, preferably 60% by mass (remaining amount. Relationship with other components, particularly a water-dispersible polyurethane resin described later. 5% by mass to 20% by mass, preferably 10% by mass, high boiling point solvent 5% by mass to 20% by mass, preferably 10% by mass, and 5% by mass of water-dispersible polyurethane resin. In a primer composition containing 30% by mass or less, preferably 20% by mass, and 0.5% by mass or more and 1.0% by mass or less, preferably 1.0% by mass of a silicon-based surfactant, Cyan) is a first ink containing 10% by mass of a coloring material. The composition stored in the second tank 1242 is a second ink containing 10% by mass of a yellow (yellow) coloring material in the primer composition described above. Examples of the high boiling point solvent include N-methylpyrrolidone (NMP) having a boiling point of 202 ° C., 2-methylpyrrolidone (2PY) having a boiling point of 250 ° C., and triethylene glycol (TriEG) having a boiling point of 288 ° C.

As the water-dispersed polyurethane resin, for example, Superflex series manufactured by Daiichi Kogyo Seiyaku Co., Ltd., SF170, SF410, F460 and the like can be used. By using the water-dispersed polyurethane resin, the tough primer layer 3 having excellent transparency, high hardness, water resistance, and durability can be obtained.
Ethylene glycol is used for adjusting the drying time when transferring from a liquid film to a dry film.
The high boiling point solvent has good compatibility with the water-dispersible polyurethane resin and is mainly intended to form a uniform film on the lens, and can prevent cracks by improving the flexibility of the dry film itself.
Examples of the high boiling point solvent include N-methylpyrrolidinone, 1.3-butanediol, 2-methylpyrrolidinone and triethylene glycol.
The silicon-based surfactant is used for the purpose of adjusting the surface tension of the solution, and it is preferable that the silicon-based surfactant is contained in an amount of 20 to 30 mN / m when applied by inkjet.

  In order to produce the first ink, first, pure water, ethylene glycol, and a volatile solvent such as a high boiling point solvent are mixed in a container, and a polyurethane resin mainly required for film formation (Superflex series, Daiichi Kogyo Seiyaku Co., Ltd.) And a surfactant is added to prepare a primer composition. Thereafter, a blue-green (cyan) coloring material is mixed and stirred in the primer composition, and then the liquid bubbles are removed to the outside by using a degassing device composed of a vacuum pump and a desiccator to produce the first ink. . The first ink thus prepared is filled in the first tank 1241. Similarly, a yellow color material is mixed and stirred in the primer composition, and then the liquid bubbles are removed to the outside by using a degassing device composed of a vacuum pump and a desiccator to produce a second ink. . The second ink produced in this manner is filled in the second tank 1242.

  Thereafter, the first region is applied by applying at least one of the first ink and the second ink to the surface 2S of the lens substrate 2, for example, the surface 2S of the thioepoxy-based lens substrate 2 having a refractive index of 1.70 or more. 11, the second region 12 and the third region 13 are formed. At this time, the average landing diameter of the ink droplets 110 is 100 μm, and the ink droplets 110 are applied at a density of 2880 dpi. The landing positions of the ink droplets 110 by inkjet are ejected adjacently and regularly to the target surface layer (region where the ink on the surface 2S is applied). The distance between the nozzle and the target surface layer is about 1 mm. From the start of application (at the time of initial landing of the first droplet), adjacent ink droplets are mixed with time due to the leveling action, and then quickly baked and dried at 80 ° C. for 0.5 hours to obtain a uniform film thickness of less than 2.5 μm. A lens substrate 2 having a colored region is obtained.

The first area 11, the second area 12, and the third area 13 are divided (colored separately) by controlling the tank 124 by the control unit 125.
For example, in order to form the first region 11, the control unit 125 supplies the first ink from only the first tank 1241 to the head 121, and from the lens center C (X axis) to the Y axis plus direction, 3 mm or more and 5 mm or less. The coating is applied from the position separated by the dimension L1 to the position in the plus direction.
In order to form the second region 12, the control unit 125 supplies the second ink from only the second tank 1242 to the head 121, and the dimension is 3 mm or more and 5 mm or less from the lens center C (X axis) to the Y axis minus direction. Apply to the position in the minus direction from the position separated by L2.
In order to form the third region 13, both the first ink and the second ink are supplied to the head 121 by the control unit 125, and the dimension (L 1 + L 2) sandwiching the lens center C (Z axis) of the lens substrate 2. Apply to the range of In applying the first ink and the second ink, the ink droplet 110 of the first ink and the ink droplet 110 of the second ink are adjacent to each other. Adjacent ink droplets 110 are mixed by the leveling action to form a green third region 13 that is an intermediate color between blue-green and yellow. Here, in order to make the third region 13 a green (500 nm or more and less than 570 nm) wavelength region, the application ratio of the first ink and the second ink is controlled by the control unit 125.

In the boundary line X1 between the first area 11 and the third area 13 and the vicinity thereof, and in the boundary line X2 between the second area 12 and the third area 13 and in the vicinity thereof, the application ratio of the first ink and the second ink. Adjust the to make it gradation.
In this embodiment, in addition to the first tank 1241 and the second tank 1242, a third tank is provided, and the third ink containing the green color material in the primer composition is stored in the third tank, When the third region 13 is formed, the third ink may be applied from the third tank to the lens substrate 2.

A hard coat layer 4 is formed on the surface of the primer layer 3. Therefore, a coating liquid for forming the hard coat layer 4 is applied by a dipping method, and the lens substrate 2 after application is air-dried at, for example, 80 ° C. for 30 minutes, and further baked at 120 ° C. for 120 minutes.
An antireflection layer 5 is formed on the surface of the hard coat layer 4. Specifically, plasma treatment is performed, and a multilayer antireflection layer 5 composed of five layers of SiO ₂ , ZrO ₂ , SiO ₂ , ZrO ₂ , and SiO ₂ is sequentially formed from the hard coat layer side to the atmosphere side. And formed by a vacuum vapor deposition machine (manufactured by SYNCHRON Co., Ltd.)

In the present embodiment configured as described above, the following operational effects can be achieved.
(1) When wearing as spectacles, the first region 11 located on the top side of the wearer is colored blue-green, so that the wearer is positioned relatively upward through the first region 11 of the spectacle lens 1. This makes it easy to see traffic signs in the dark.
FIG. 4 shows the spectral luminous efficiency of the photopic and scotopic visions of the human eye. In FIG. 4, the luminous efficiency Q1 of photopic vision has a peak at a wavelength of about 560 nm, and it can be seen that green to yellow light is easy to see. The luminous efficiency Q2 for dark place vision has a peak at a wavelength of about 510 nm, and it can be seen that blue or blue-green light is easy to see. This phenomenon is due to the transfer of sensitivity from the cones on the retina to the rods, which is performed day and night (light and dark), and is called the Purkinje shift (Purkinje phenomenon). A general traffic sign is configured with white letters or designs on a blue background, and on a car-only road, it is configured with white letters or designs on a green background. When driving a car or the like, the wearer often sees these signs above the lens center C, so the first region 11 is blue-green corresponding to Purkinje shift (Purkinje phenomenon). As a result, it is possible to improve visibility in a dark place such as at night or in a tunnel.
Moreover, since the second region 12 located on the opposite side of the first region 11 with respect to the lens center C facing the wearer's pupil in the first eye position is colored yellow, Can easily recognize a moving vehicle, a pedestrian, and the like through the opposite side portion.

(2) Since the third region 13 that includes the lens center C and is colored green is provided between the first region 11 and the second region 12, visibility in the inside and outside of the tunnel is ensured day and night or daytime. Can do. That is, as shown in FIG. 4, when the wavelength corresponding to green is 555 nm, the luminous efficiency is high in both photopic and scotopic visions, so that it is visible in both bright and dark situations. Sex can be secured.

(3) The boundary between the third region 13 and the first region 11 is a gradation between the green color of the third region 13 and the blue-green color of the first region 11, and the boundary between the third region 13 and the second region 12 is The gradation of the green color of the third region 13 and the yellow color of the second region 12. For this reason, the boundary between the first region 11 and the third region 13 and the boundary between the second region 12 and the third region 13 are not clearly defined. There is little fatigue.

(4) In accordance with the human average iris, the boundary line X1 between the third region 13 and the first region 11 is set to a dimension L1 of 3 mm or more and 5 mm or less on the Y axis plus side with respect to the lens center C. A boundary line X2 between the first region 12 and the second region 12 is set to a dimension L2 of 3 mm or more and 5 mm or less on the Y axis minus side with respect to the lens center C. For this reason, when the wearer looks in the horizontal direction, the wearer does not visually recognize adjacent areas (color-difference areas) at the same time.

(5) In order to manufacture the spectacle lens 1, the first region 11 is formed by applying the first ink in the blue-green wavelength region to the first region 11 of the lens substrate 2 by inkjet. The second region 12 was formed by applying the yellow second ink to the second region 12 located opposite to the first region 11 with respect to the lens center C facing the pupil at the position by inkjet. Since the first region 11 and the second region 12 are formed by ink jetting, the lens substrate 2 can be colored with an accurate color.

(6) The first ink is a primer composition containing a blue-green color material, and the second ink is a primer composition containing a yellow color material, and the first region 11, the second region 12, and the third ink. The region 13 is provided to form the primer layer 3, and the hard coat composition is applied on the primer layer 3 to form the hard coat layer 4. Since the first region 11, the second region 12, and the third region 13 are formed simultaneously with the step of providing the primer layer 3, the color lens can be efficiently used as compared with the case where the coloring step and the primer layer forming step are performed separately. Can be manufactured.

Note that the present invention is not limited to the above-described embodiment, and includes the following modifications as long as the object of the present invention can be achieved.
For example, in the above embodiment, the third region 13 is colored green. However, in the present invention, the third region 13 may be replaced with green, and a color that suits the wearer's preference may be used. May be a transparent region including the lens center C. Here, the term “transparent” means that the transmittance is extremely high and is not colored in any color. By making the third region 13 transparent, not only the labor of coloring can be saved, but also the luminous transmittance at the lens center C is increased, and the object can be easily seen at night. Even when the third region 13 is transparent, the boundary lines X1 and X2 and the vicinity thereof may be gradation.

Furthermore, in the said embodiment, the boundary line X1 of the 1st area | region 11 and the 3rd area | region 13 is formed in the linear form parallel to an X-axis, and the boundary line X2 of the 2nd area | region 12 and the 3rd area | region 13 is made into an X-axis. In the present invention, as shown in FIG. 5A, the third region 13 may be a circle centered on the lens center C.
In the present invention, it is not always necessary to provide the third region 13, and the first region 11 and the second region 12 are sandwiched between the X axis including the lens center C as shown in FIG. May be provided next to each other.

  In the present invention, the first region 11 is not colored blue-green, but may be colored blue (430 nm or more and less than 460 nm). In short, in this invention, the 1st area | region 11 should just be colored by the wavelength of blue thru | or green (430 nm or more and less than 500 nm).

  In the above embodiment, the outlines of the first region 11, the second region 12, and the third region 13 are provided leaving a margin with respect to the outer periphery of the spectacle lens 1, but in the present invention, the entire surface of the lens is left without leaving a margin. The first region 11, the second region 12, and the third region 13 may be provided.

  In the said embodiment, formation of the 1st area | region 11, the 2nd area | region 12, and the 3rd area | region 13 and formation of the primer layer 3 were implemented simultaneously, However, In this invention, 1st area | region 11, 2nd area | region 12 and 3rd area | region are implemented. The formation of the region 13 and the formation of the hard coat layer 4 may be performed at the same time, or the lens substrate 2 is colored by directly applying an ink having a blue-green color material or an ink having a yellow color material. A layer may be formed, the primer layer 3 may be formed on the colored layer, and the hard coat layer 4 may be formed on the primer layer 3.

  DESCRIPTION OF SYMBOLS 1 ... Eyeglass lens, 2 ... Lens base material, 3 ... Primer layer, 4 ... Hard-coat layer, 5 ... Antireflection layer, 11 ... 1st area | region, 12 ... 2nd area | region, 13 ... 3rd area | region, C ... Lens center

Claims (3)

A first region that is colored blue or green and is located on the top side of the wearer when worn as glasses;
A second region that is colored yellow and is located opposite to the first region with respect to the lens center facing the wearer's pupil in the first eye position;
An area including the lens center, located between the first area and the second area on the Y axis intersecting the X axis at the lens center, and from the lens center on the Y axis Third regions each having a predetermined dimension on the parietal side and the opposite side;
Including
The eyeglass lens, wherein the third region is a colorless and transparent region including the lens center. A first region that is colored blue or green and is located on the top side of the wearer when worn as glasses;
A second region that is colored yellow and is located opposite to the first region with respect to the lens center facing the wearer's pupil in the first eye position;
An area including the lens center, located between the first area and the second area on the Y axis intersecting the X axis at the lens center, and from the lens center on the Y axis Third regions each having a predetermined dimension on the parietal side and the opposite side;
Including
The first region is colored blue to blue-green;
The eyeglass lens, wherein the third region is a region colored in green including the lens center. The claim 1 or eyeglass lens according to claim 2,
The boundary between the third region and the first region is a gradation between the color of the third region and the color of the first region,
The eyeglass lens, wherein the boundary between the third region and the second region is a gradation between the color of the third region and the color of the second region.

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