JP7240268B2 - multicolor molded lens - Google Patents

Description

TECHNICAL FIELD The present invention relates to a multicolor molded lens having an antifogging coating film formed on its inner surface.

2. Description of the Related Art Conventionally, in vehicle lamps such as rear combination lamps, multicolor molded lenses having primary and secondary molded products of different colors have been often used.

Japanese Patent Application Laid-Open No. 2002-200002 describes a configuration of such a multicolor molded lens, in which a red lens as a secondary molded product is arranged so as to surround a white lens as a primary molded product.

In the multicolor molded lens described in this "Patent Document 1", raised ribs are formed on the outer peripheral edge of the primary molded product and the inner peripheral edge of the secondary molded product. The outer peripheral surface of the raised rib and the inner peripheral surface of the raised rib of the secondary molded product are joined together.

Japanese Patent Application Laid-Open No. 2000-260207

In order to improve the appearance of a multicolor molded lens when viewed from the outside, the raised ribs formed on the primary and secondary molded products are eliminated, and the end faces are joined together. preferably.

In order to realize this, as the configuration of the multicolor molded lens, a configuration in which the primary molded product is arranged so as to surround the secondary molded product is adopted, contrary to the configuration described in the above-mentioned "Patent Document 1". Therefore, it is conceivable that the primary molded product can be easily supported by the mold for secondary molding.

However, as a configuration of the multicolor molded lens, an antifogging coating film is formed on the inner surface, and the antifogging coating film is arranged so as to straddle the position of the joint surface between the primary molded product and the secondary molded product. The following problems arise when it is formed as follows.

That is, in the primary molded product, a corner R is inevitably formed at the corner between the inner surface and the end face to be the joint surface, which cannot be formed with a pin angle (that is, R0). Therefore, in the multicolor molded lens, a groove-shaped opening having a substantially wedge-shaped cross section is formed at the position of the joint surface between the primary molded product and the secondary molded product on the inner surface.

After that, when the anti-fog coating film is formed on the inner surface of the multi-color molded lens, the solvent of the anti-fog coating accumulated in the opening part impregnates the interior of the primary and secondary molded products. Due to this, cracks are likely to occur in the peripheral region of the mouth opening in the primary molded product and the secondary molded product.

The cracks generated in this manner are visible from the outside of the multicolor molded lens, and thus cause poor appearance.

The present invention has been made in view of such circumstances, and provides a multi-color molded lens having an anti-fogging coating film formed on the inner surface, which can effectively suppress the occurrence of poor appearance. The object is to provide a molded lens.

The present invention is intended to achieve the above object by devising the configuration of the primary molded product.

That is, the multicolor molded lens according to the present invention is
A multicolor molded lens comprising primary and secondary molded products of mutually different colors, wherein the multicolor molded lens has an anti-fogging coating film formed on the inner surface,
The primary and secondary molded products are arranged so that the primary molded product surrounds the secondary molded product,
The anti-fogging coating film is formed so as to straddle the position of a joint surface formed by surface contact between the inner peripheral end surface of the primary molded product and the outer peripheral end surface of the secondary molded product,
The primary molded product is characterized in that a covering portion is formed extending from the joint surface along the inner surface of the secondary molded product so as to cover the secondary molded product. .

The specific colors of the primary and secondary molded products are not particularly limited as long as the "multicolor molded lens" has primary and secondary molded products of different colors.

The above-mentioned "multicolor molded lens" may have a configuration in which each of the primary and secondary molded products is formed in a transparent lens shape, or one or both of the primary and secondary molded products may It may be configured to have a control function.

Regarding the above "primary and secondary molded products", the specific shape of each of the primary and secondary molded products is particularly limited as long as the primary molded products are arranged so as to surround the secondary molded products. Also, the primary molded product may be arranged so as to surround the secondary molded product over the entire circumference, or may be arranged so as to partially surround the secondary molded product.

The specific formation range of the above-mentioned "anti-fog coating film" is not particularly limited as long as it is formed so as to straddle the joint surfaces of the primary molded product and the secondary molded product.

If the above-mentioned "covering part" extends from the joint surface of the primary molded product and the secondary molded product along the inner surface of the secondary molded product so as to cover the secondary molded product, its specific shape is not particularly limited.

In the multicolor molded lens according to the present invention, a primary molded article arranged so as to surround the secondary molded article is provided with a secondary molded article along the inner surface of the secondary molded article from the joint surface with the secondary molded article. Since the covering portion extending so as to cover the molded product is formed to extend, a groove-shaped opening is formed at the position of the joint surface between the primary molded product and the secondary molded product on the inner surface of the multicolor molded lens. It is possible to prevent the opening from being formed.

Therefore, it is possible to prevent the occurrence of cracks in the peripheral area of the opening due to impregnation of the solvent of the anti-fogging paint accumulated in the opening into the interior of the primary molded product or the secondary molded product. can do. Accordingly, it is possible to prevent appearance defects due to such cracks being visible from the outside of the multicolor molded lens.

As described above, according to the present invention, it is possible to effectively suppress the occurrence of poor appearance in a multicolor molded lens having an antifogging coating film formed on the inner surface.

In the above configuration, the primary molded product may be configured such that the general region located around the covering portion vicinity region is thinner than the covering portion vicinity region located near the covering portion. In this case, it becomes possible to easily form most regions of the multicolor molded lens with a substantially constant thickness, thereby making it possible to reduce the weight of the multicolor molded lens.

In the above configuration, if the covering portion of the primary molded product is configured such that the front end surface extends obliquely toward the inner surface of the secondary molded product, the primary molded product can be It is possible to provide a structure in which the antifogging paint is less likely to accumulate on the connecting portion between the tip surface of the covering portion and the inner surface of the secondary molded product. Therefore, it is possible to effectively prevent the secondary molded product from being impregnated with the solvent of the anti-fogging paint accumulated in the connecting portion and causing cracks in the secondary molded product.

At that time, if the inclination angle of the tip surface of the covering portion is set to a value of 30 to 60°, when molding the primary molded product, the filling of the space for the covering portion with the molten resin is improved. is sufficiently ensured, the effect of preventing the antifogging paint from accumulating on the connecting portion between the tip end face of the covering portion of the primary molded product and the inner surface of the secondary molded product can be enhanced.

In the above configuration, the corner R formed at the corner between the inner surface of the secondary molded product and the joint surface of the primary molded product is set to a value of R 0.1 to 0.5 mm. Then, the following effects can be obtained.

That is, since the mold for primary molding also has a surface shape along the surface shape of the secondary molded product having such a corner R, when molding the primary molded product, The covering width of the covering portion can be suppressed to be small while sufficiently ensuring the filling property of the molten resin into the space. Accordingly, it is possible to improve the appearance of the multicolor molded lens.

In the above configuration, if the angle between the joint surface of the primary molded product and the secondary molded product and the inner surface of the secondary molded product is set to a value of 95 ° or more, the primary molded product When molding the, it is possible to improve the filling property of the molten resin into the space for the covering portion.

1 is a front view showing a multicolor molded lens according to one embodiment of the present invention; FIG. II-II line sectional view of Fig. 1 (a) is a detailed view of part III in FIG. 2, and (b) is a view similar to (a) showing a comparative example of the above embodiment. A view showing the manufacturing process of the above multicolor molded lens at the same cross-sectional position as in FIG. A view similar to FIG. 2, showing first to third modifications of the above embodiment

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a multicolor molded lens 10 according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II of FIG.

The multicolor molded lens 10 according to this embodiment is a translucent cover of a rear combination lamp mounted on the right rear end of a vehicle, and when mounted on the vehicle, its outer surface 10a extends along the surface shape of the vehicle body. It constitutes the design surface.

1 and 2, the direction indicated by X is the "forward" direction ("rearward direction" in the vehicle) of the multicolor molded lens 10, and the direction indicated by Y is the "rightward direction" (in the vehicle direction) orthogonal to the "forward" direction. is also "rightward"), and the direction indicated by Z is "upward". The same applies to figures other than these.

As shown in FIGS. 1 and 2, the multicolor molded lens 10 according to this embodiment has a configuration including primary and secondary molded products 10P and 10S having different colors. At this time, in this multicolor molded lens 10, the primary molded product 10P is arranged so as to surround the secondary molded product 10S.

The primary molded product 10P is a lens for a tail and stop lamp, and is configured as a see-through lens made of red transparent resin (for example, made of PMMA). An annular sealing leg portion 10Pd is formed on the outer peripheral edge of the inner surface 10Pb of the primary molded product 10P. It is designed to be fixed against. The primary molded product 10P has a substantially trapezoidal outer shape that is slightly oblong when viewed from the front of the lamp.

The secondary molded product 10S is a lens for a backup lamp, and is configured as a see-through lens made of colorless and transparent resin (for example, made of PMMA). The secondary molded product 10S is located in the central lower region of the primary molded product 10P, and has a laterally elongated substantially trapezoidal outer shape when viewed from the front of the lamp.

The multicolor molded lens 10 has an antifogging coating film 12 formed on its inner surface 10b. The anti-fogging coating film 12 is formed to cover the entire area of the inner surface 10Sb of the secondary molded product 10S and the area of the inner surface 10Pb of the primary molded product 10P located on the inner peripheral side of the sealing legs 10Pd. It is

The joint surface 10c between the primary molded product 10P and the secondary molded product 10S in the multicolor molded lens 10 is formed by surface contact between the inner peripheral end surface of the primary molded product 10P and the outer peripheral end surface of the secondary molded product 10S. It is At this time, this cemented surface 10c is configured as an inclined surface extending in a direction inclined from the outer surface 10a of the multicolor molded lens 10 toward the inner surface 10b toward the inner peripheral side (that is, toward the secondary molded product 10S). .

The primary molded product 10P is formed with a covering portion 10Pe extending from the joint surface 10c along the inner surface 10Sb of the secondary molded product 10S so as to cover the secondary molded product 10S. The covering portion 10Pe is formed along the entire circumference of the joint surface 10c, and the tip end surface 10Pe1 is formed as an inclined surface extending inclined toward the inner surface 10Sb of the secondary molded product 10S.

In the primary molded product 10P, the general region 10P0 located around the covering portion vicinity region 10P1 is thinner than the covering portion vicinity region 10P1 located near the covering portion 10Pe. Specifically, the primary molded product 10P is formed so that its inner surface 10Pb is slightly inclined toward the outer surface 10a side toward the general region 10P0 in the outer peripheral portion of the covering portion vicinity region 10P1. The thickness of the general area 10P0 is set to substantially the same value as the thickness of the secondary molded product 10S.

FIG. 3(a) is a detailed view of part III in FIG.

As shown in FIG. 3A, the joint surface 10c between the primary molded product 10P and the secondary molded product 10S has an included angle θ1 between the joint surface 10c and the inner surface 10Sb of the secondary molded product 10S of θ1= It is set to a value of 95° or more (for example, θ1=about 100°).

Further, the inclination angle θ2 of the tip surface 10Pe1 of the covering portion 10Pe is set to a value of θ2=30 to 60° (for example, a value of θ2=approximately 45°).

In the secondary molded product 10S, a corner R having a value of RA=R0.1 to 0.5 mm (for example, a value of RA=R about 0.3 mm) is formed at a corner portion 10Sf between the inner surface 10Sb and the joint surface 10c. It is

In addition, the covering width of the covering portion 10Pe (that is, the width from the position of the R stop on the joint surface 10c side of the corner portion 10Sf to the tip position of the tip surface 10Pe1) W is a value of about W=0.5 to 1 mm (for example, W = value of about 0.8 mm).

The covering thickness (that is, thickness in the front-rear direction) T of the covering portion 10Pe is set to a value of about T=0.4 to 1 mm (for example, a value of about T=0.5 mm).

On the other hand, FIG. 3(b) is a view similar to FIG. 3(a) showing a multicolor molded lens 50 as a comparative example of the multicolor molded lens 10 according to this embodiment. The configuration of this multicolor molded lens 50 will be described later.

FIG. 4 is a diagram showing the manufacturing process of the multicolor molded lens 10 according to this embodiment at the same cross-sectional position as in FIG. 3(a).

First, as shown in FIG. 4(a), a core mold 102 and a cavity mold 104 constituting a mold for primary molding are clamped together, and a molten resin Rs1 is injected into the space C1 within the mold. By filling, a primary molded product 10P as shown in FIG. 4(b) is molded.

Next, as shown in FIG. 4(b), the core mold 102, which is still supporting the molded primary molded product 10P, and the not-shown cavity mold are clamped together to form a space C2 within the mold. By injecting and filling the molten resin Rs2 into the cavity, a secondary molded product 10S as shown in FIG.

Next, as shown in FIG. 4(d), an antifogging coating film 12 is formed on the inner surface 10b of the molded multicolor molded lens 10. Next, as shown in FIG. The antifogging coating film 12 is formed, for example, by moving the nozzle of a spray gun along the inner surface 10b of the multicolor molded lens 10 and spraying the antifogging coating from the nozzle onto the inner surface 10b. In this case, as the anti-fogging paint, for example, an acrylic anti-fogging paint composed of an acrylic resin, a surfactant, a curing agent (catalyst), or the like can be used.

After that, by heating the multicolor molded lens 10, the anti-fogging coating film 12 applied to the inner surface 10b is cured. This heat curing is performed, for example, by placing the multicolor molded lens 10 in a heating furnace and heating the inner surface 10b with hot air of about 120.degree.

Next, the effects of this embodiment will be described.

The multicolor molded lens 10 according to the present embodiment is mounted on the primary molded product 10P arranged so as to surround the secondary molded product 10S, from the joint surface 10c with the secondary molded product 10S, to the inside of the secondary molded product 10S. Since the covering portion 10Pe extending along the surface 10Sb so as to cover the secondary molded product 10S is formed to extend, the following effects can be obtained.

That is, in the multicolor molded lens 50 shown in FIG. 3B as a comparative example of the present embodiment, as in the multicolor molded lens 10 according to the present embodiment, the primary molded product 50P and the secondary molded product 50S The joint surface 50c is formed by the end surfaces of the primary and secondary molded products 50P and 50S coming into surface contact with each other, and the primary molded product 50P has an extended covering portion such as the covering portion 10Pe of the present embodiment. not formed.

In the primary molded product 50P of such a multicolor molded lens 50, a corner R is inevitably formed at the corner between the inner surface 50Pb and the end surface to be the joint surface 50c, and is formed with a pin angle. It is not possible. Therefore, a groove-shaped opening 50h having a substantially wedge-shaped cross section is formed at the position of the joint surface 50c on the inner surface 50b of the multicolor molded lens 50. As shown in FIG.

When the antifogging coating film 52 is formed on the inner surface 50b of such a multicolor molded lens 50, the solvent of the antifogging coating accumulated in the opening portion 50h is discharged into the primary molded product 50P and secondary molding. As a result, cracks CR1 and CR2 are likely to occur in the peripheral regions of the opening 50h in the primary molded product 50P and the secondary molded product 50S.

The cracks CR1 and CR2 generated in this manner are visible from the outside of the multicolor molded lens 50, and thus cause poor appearance.

On the other hand, in the multicolor molded lens 10 according to the present embodiment, the covering portion 10Pe is formed to extend from the primary molded product 10P. and the secondary molded product 10S, an opening like the opening 50h formed in the multicolor molded lens 50 as the comparative example is not formed.

Therefore, in the multicolor molded lens 10 according to the present embodiment as well, the portion of the cemented surface 10c is visible from the outside of the multicolor molded lens 10 (that is, from the space on the outer surface 10a side), but the peripheral area of the cemented surface 10c Since cracks due to the formation of the anti-fogging coating film 12 do not occur in the first step, the occurrence of poor appearance can be effectively suppressed.

As described above, according to the present embodiment, it is possible to effectively suppress appearance defects in the multicolor molded lens 10 having the antifogging coating film 12 formed on the inner surface 10b.

Moreover, in the primary molded product 10P of the present embodiment, the general region 10P0 located around the covering portion vicinity region 10P1 is thinner than the covering portion vicinity region 10P1 located near the covering portion 10Pe. Therefore, it is possible to easily form most of the area of the multicolor molded lens 10 with a substantially constant thickness, thereby reducing the weight of the multicolor molded lens 10 .

In addition, since the covering portion 10Pe of the primary molded product 10P is formed so that the front end surface 10Pe1 thereof extends obliquely toward the inner surface 10Sb of the secondary molded product 10S, this front end surface 10Pe1 and the secondary molding It is possible to adopt a configuration in which the anti-fogging paint is less likely to accumulate on the connection portion with the inner surface 10Sb of the article 10S. Therefore, it is possible to effectively suppress the occurrence of cracks in the secondary molded product 10S due to impregnation of the secondary molded product 10S with the solvent of the antifogging paint accumulated in the connecting portion.

At this time, since the tip end surface 10Pe1 of the covering portion 10Pe has an inclination angle θ2 set to a value of θ2=30 to 60°, when molding the primary molded product 10P, the space for the covering portion 10Pe is After sufficiently ensuring the filling property of the molten resin Rs1 into C1a (see FIG. 4A), the tip surface 10Pe1 of the covering portion 10Pe of the primary molded product 10P and the inner surface 10Sb of the secondary molded product 10S It is possible to enhance the effect of preventing the anti-fogging paint from accumulating in the connecting portion.

In this embodiment, the corner R formed at the corner 10Sf between the inner surface 10Sb of the secondary molded product 10S and the joint surface 10c of the primary molded product 10P is RA=R 0.1 to 0.5 mm. Since it is set to a value, the following effects can be obtained.

That is, since the cavity mold 104 constituting the mold for primary molding also has a surface shape along the surface shape of the secondary molded product 10S having such a corner R, the primary molded product 10P is At the time of molding, the filling width W of the covering portion 10Pe can be kept small while sufficiently ensuring the filling property of the molten resin Rs1 into the space C1a for the covering portion 10Pe. Accordingly, the appearance of the multicolor molded lens 10 can be improved.

In this embodiment, the included angle θ1 between the joint surface 10c between the primary molded product 10P and the secondary molded product 10S and the inner surface 10Sb of the secondary molded product 10S is set to a value of θ1=95° or more. Therefore, when molding the primary molded product 10P, it is possible to improve the filling property of the molten resin Rs1 into the space C1a for the covering portion 10Pe.

In the above embodiment, the multicolor molded lens 10 has been described as a translucent cover for a vehicle rear combination lamp. can be done.

In the above embodiment, both the primary and secondary molded products 10P and 10S are configured as transparent lenses, but there is a configuration in which lens elements are formed on the required regions of the inner surfaces 10Pb and 10Sb. It is also possible to

Next, a modification of the above embodiment will be described.

First, a first modified example of the above embodiment will be described.

FIG. 5(a) is a view similar to FIG. 2, showing a main part of a multicolor molded lens 110 according to this modified example.

As shown in FIG. 5A, the basic configuration of this modification is the same as that of the above embodiment, but the colors of the primary and secondary molded products 110P and 110S are different from those of the above embodiment. ing.

That is, in the multicolor molded lens 110 according to this modified example, the primary molded product 110P is configured as a colorless and transparent resin lens, and the secondary molded product 110S is configured as an amber transparent resin lens. .

In the multicolor molded lens 110 according to this modified example, the shapes of the primary and secondary molded products 110P and 110S are the same as in the above embodiment.

That is, the primary molded product 110P is formed with a covering portion 110Pe extending from the joint surface 110c with the secondary molded product 110S along the inner surface 110Sb of the secondary molded product 110S so as to cover the secondary molded product 110S. It is

An anti-fogging coating film 12 is formed on the inner surface 110b of the multicolor molded lens 110 so as to straddle the bonding surface 110c.

Also in the multicolor molded lens 110 according to this modified example, the cemented surface 110c is visible from the outside of the multicolored molded lens 110 (that is, from the space on the outer surface 110a side). Since cracks due to the formation of the cloudy coating film 12 do not occur, the occurrence of poor appearance can be effectively suppressed.

Therefore, even when the configuration of this modified example is adopted, the same effects as those of the above-described embodiment can be obtained.

Instead of the primary and secondary molded products 110P and 110S, resin lenses of similar colors but different densities (for example, the primary molded product 110P is pink transparent and the secondary molded product 110S is red transparent) are used. It is also possible to configure these.

Next, the 2nd modification of the said embodiment is demonstrated.

FIG. 5(b) is a view similar to FIG. 2, showing a main part of a multicolor molded lens 210 according to this modified example.

As shown in FIG. 5B, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the primary molded product 210P is different from that of the above embodiment.

That is, in the multicolor molded lens 210 according to this modified example, the primary molded product 210P is configured as a black opaque resin member.

On the other hand, in the multicolor molded lens 210 according to this modified example, the secondary molded product 210S is configured as a colorless and transparent resin lens as in the case of the above embodiment.

Also, in the multicolor molded lens 210 according to this modified example, the shapes of the primary and secondary molded products 210P and 210S are the same as in the above embodiment.

That is, the primary molded product 210P has a covering portion 210Pe extending from a joint surface 210c with the secondary molded product 210S along an inner surface 210Sb of the secondary molded product 210S so as to cover the secondary molded product 210S. Formed as an extension.

In addition, the anti-fogging coating film 12 is formed on the inner surface 210b of the multicolor molded lens 210 so as to straddle the bonding surface 210c.

Also in the multicolor molded lens 210 according to this modified example, the cemented surface 210c portion is visible from the outside of the multicolored molded lens 210 (that is, from the space on the outer surface 210a side). Since cracks due to the formation of the cloudy coating film 12 do not occur, the occurrence of poor appearance can be effectively suppressed.

Therefore, even when the configuration of this modified example is adopted, the same effects as those of the above-described embodiment can be obtained.

Next, the 3rd modification of the said embodiment is demonstrated.

FIG. 5(c) is a view similar to FIG. 2, showing a main part of a multicolor molded lens 310 according to this modified example.

As shown in FIG. 5(c), the basic configuration of this modification is the same as that of the above embodiment, but the shape of the primary molded product 310P is different from that of the above embodiment.

That is, even in this modification, the primary molded product 310P covers the secondary molded product 310S along the inner surface 310Sb of the secondary molded product 310S from the joint surface 310c with the secondary molded product 310S. An extended covering portion 310Pe is formed.

However, in the primary molded product 310P of this modified example, the covering portion vicinity region 310P1 located near the covering portion 310Pe and the general region 310P0 located around the covering portion vicinity region 310P1 are formed with the same thickness. ing.

In the multicolor molded lens 310 according to this modified example, the materials of the primary and secondary molded products 310P and 310S are the same as those of the above embodiment, and the inner surface 310b is coated with the antifogging coating film 12. is formed so as to straddle the position of the joint surface 310c.

Also in the multicolor molded lens 310 according to this modified example, the cemented surface 310c is visible from the outside of the multicolored molded lens 310 (that is, from the space on the outer surface 310a side). Since cracks due to the formation of the cloudy coating film 12 do not occur, the occurrence of poor appearance can be effectively suppressed.

Therefore, even when the configuration of this modified example is adopted, the same effects as those of the above-described embodiment can be obtained.

It should be noted that the numerical values shown as specifications in the above-described embodiment and its modification are merely examples, and it goes without saying that these values may be set to different values as appropriate.

Moreover, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations with various other modifications can be adopted.

10, 110, 210, 310 multicolor molded lens 10a, 110a, 210a, 310a outer surface 10b, 10Pb, 10Sb, 110b, 110Sb, 210b, 210Sb, 310b, 310Sb inner surface 10c, 110c, 210c, 310c bonding surface 10P, 110P, 210P, 310P Primary molded product 10P0, 310P0 General area 10P1, 310P1 Covering portion vicinity area 10Pd Seal leg portion 10Pe, 110Pe, 210Pe, 310Pe Covering portion 10Pe1 Tip surface 10S, 110S, 210S, 310S Secondary molded product 10Sf Corner 12 Anti-fogging coating film 102 Core mold 104 Cavity mold C1, C2 Space in mold C1a Space for covering part RA Corner R
Rs1, Rs2 Molten resin T Covering thickness W Covering width θ1 Included angle θ2 Tilt angle

Claims (6)

A multicolor molded lens comprising primary and secondary molded products of mutually different colors, wherein the multicolor molded lens has an anti-fogging coating film formed on the inner surface,
The primary and secondary molded products are arranged so that the primary molded product surrounds the secondary molded product,
The anti-fogging coating film is formed so as to straddle the position of a joint surface formed by surface contact between the inner peripheral end surface of the primary molded product and the outer peripheral end surface of the secondary molded product,
A multi-color molding characterized in that the primary molded product is formed with a covering portion extending from the joint surface along the inner surface of the secondary molded product so as to cover the secondary molded product. lens. 4. The primary molded product is formed so that a general region located around the covering portion vicinity region is thinner than a covering portion vicinity region located near the covering portion. 2. The multicolor molded lens according to 1. 3. The multicolor molded lens according to claim 1, wherein the covering portion is formed such that the tip end surface of the covering portion extends obliquely toward the inner surface of the secondary molded product. . 4. The multicolor molded lens according to claim 3, wherein the tilt angle of the tip surface of the covering portion is set to a value of 30 to 60 degrees. A corner R formed at a corner between the inner surface of the secondary molded product and the joint surface in the secondary molded product is set to a value of R 0.1 to 0.5 mm. A multicolor molded lens according to any one of claims 1 to 4. 6. The multicolor molded lens according to any one of claims 1 to 5, wherein an included angle between the cemented surface and the inner surface of the secondary molded product is set to a value of 95° or more.

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