JP2016191808A - Method of manufacturing lens with light shielding layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a lens with a light shielding layer that can appropriately apply liquid material for forming the light shielding layer to the outer periphery of the lens.SOLUTION: A lens 2 with a light shielding layer is manufactured by forming a light shielding layer 3 on the outer periphery 25 of a lens 20. In a first process, a liquid material 30 for forming a light shielding layer is applied to the whole circumference along the inner rim of a first annular surface 27, and then in a second process, the lens 20 is rotated around an optical axis L, and thereby the liquid material is made to flow toward the outside in the radial direction by centrifugal force and applied to the first annular surface 27. Next, in a third process, the liquid material 30 for forming a light shielding layer is applied to the whole circumference along the border with the first annular surface 27 of an annular outer peripheral surface 28, and then in a fourth process, the lens 20 is rotated around the optical axis L, and thereby the liquid material is made to flow toward the outside in the radial direction by centrifugal force and applied to the annular outer peripheral surface 28 and a second annular surface 29.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a method for manufacturing a lens with a light-shielding layer in which a light-shielding layer is formed on an outer peripheral portion that encloses a lens surface radially outward.

  In some cases, the lens may employ a configuration in which a light shielding layer is formed on an outer peripheral portion that surrounds the lens surface on the outer side in the radial direction to prevent unnecessary light from entering and reflecting. In manufacturing such a lens with a light-shielding layer, a configuration in which a liquid material is applied to the outer peripheral portion by bringing a coating head made of a felt-like material into which the liquid material for forming the light-shielding layer has soaked into contact with the outer peripheral portion of the lens. It has been proposed (see Patent Document 1).

Japanese Unexamined Patent Publication No. Hei 3-296659

  However, in a configuration in which a liquid material is applied by bringing a coating head made of a felt-like material into contact with the outer peripheral portion of the lens, if the amount of the liquid material permeating into the coating head varies, the amount of liquid material applied will vary, and light shielding will occur. There is a problem that the thickness of the layer varies.

  In view of the above problems, an object of the present invention is to provide a method for manufacturing a lens with a light shielding layer capable of appropriately applying a liquid material for forming a light shielding layer to an outer peripheral portion.

  In order to solve the above problems, the present invention provides a method for manufacturing a lens with a light-shielding layer in which a light-shielding layer is formed on an outer peripheral portion that surrounds the lens surface on the radially outer side on at least one surface side of the lens. Thereafter, a first step of applying a liquid material for forming a light shielding layer along the inner edge of the outer peripheral portion over the entire circumference, and after the first step, the lens is rotated around the optical axis, and the liquid is applied by centrifugal force. And a second step of flowing the object radially outward.

  In the present invention, in the first step, after the liquid material for forming the light shielding layer is applied along the inner edge of the outer peripheral portion where the light shielding layer of the lens is to be formed, the viscosity of the liquid material and the thickness of the light shielding layer are applied in the second step. The lens is rotated around the optical axis at a speed corresponding to the thickness, and the liquid material is caused to flow radially outward by centrifugal force. Therefore, unlike the case where the liquid material is applied with a coating head made of a felt-like material, the amount of the liquid material that permeates the coating head does not fluctuate and the amount of application of the light shielding layer does not vary. Therefore, the liquid material for forming the light shielding layer can be appropriately applied to the outer peripheral portion, and the thickness of the light shielding layer is stabilized.

  In the present invention, in the first step, a mode is adopted in which the lens is rotated about the optical axis by one or more rotations while supplying the liquid material from the liquid material discharge nozzle toward the inner edge of the outer peripheral portion. Can do. According to this configuration, the first step can be performed efficiently.

  In this case, in the first step, for example, the lens is rotated once around the optical axis. According to this configuration, since the amount of the liquid material applied in the first step is stabilized, the thickness of the light shielding layer is stabilized.

  In the present invention, it is preferable that the rotation speed of the lens in the first step is slower than the rotation speed of the lens in the second step. According to this structure, it can suppress that a liquid substance spreads to an outer peripheral side by a centrifugal force at a 1st process.

  In the present invention, when rotating the lens in the second step, it is preferable to blow air on the lens surface at an upper position of the lens. According to such a configuration, an air flow from the radially inner side to the radially outer side is generated on the one surface side of the lens. For this reason, in the second step, even if the liquid material flowing along the annular inner peripheral surface of the lens is scattered as droplets or the like on the outer side in the radial direction of the lens, the scattered liquid material is prevented from adhering to the lens. be able to.

  In the present invention, in the first step and the second step, the lens is supported by a lens base with the one surface facing upward, and when the lens is rotated in the second step, air is blown around the lens. It is preferable to suck upward or downward. According to such a configuration, when the lens cradle is rotated at a high speed in the second step, even if the liquid material scatters from the lens as droplets or the like, the liquid material is removed from around the lens by the air flow. The For this reason, it can suppress that the scattered liquid substance adheres to a lens.

  In this case, when rotating the lens in the second step, it is preferable to suck air upward around the lens. According to such a configuration, when the lens cradle is rotated at a high speed, even if the liquid material is scattered upward from the lens as a droplet or the like, the liquid material is removed from around the lens by the air flow. For this reason, it can suppress that the scattered liquid substance adheres to a lens.

  In the present invention, the lens includes a first annular surface that surrounds the lens surface radially outward at the outer peripheral portion, and the other surface side of the lens from the first annular surface radially outward of the first annular surface. And an annular outer peripheral surface connecting the first annular surface and the second annular surface. In the first step, the first annular surface as the inner edge of the outer peripheral portion. The liquid material is applied over the entire circumference along the inner edge of one annular surface, and the liquid material is applied over the entire circumference along the boundary between the annular outer peripheral surface and the first annular surface, and then the second In the process, it is possible to adopt a mode in which the lens is rotated around the optical axis and the liquid material is caused to flow radially outward by centrifugal force. When there is a downward step (annular outer peripheral surface) on the outer peripheral portion of the lens, the liquid material scatters on the outer side in the radial direction from the step portion in the second step, and liquid on the annular outer peripheral surface and the second annular surface. Although it is difficult to properly apply the object, the liquid substance can be appropriately applied to the annular outer peripheral surface and the second annular surface by performing the first step.

  In the present invention, the lens includes a first annular surface that surrounds the lens surface radially outward at the outer peripheral portion, and the other surface side of the lens from the first annular surface radially outward of the first annular surface. And an annular outer peripheral surface connecting the first annular surface and the second annular surface. In the first step, the first annular surface as the inner edge of the outer peripheral portion. After applying the liquid material over the entire circumference along the inner edge of one annular surface, in the second step, the lens is rotated around the optical axis, and the liquid material is caused to flow radially outward by centrifugal force, and thereafter A third step of coating the liquid material over the entire circumference along a boundary between the annular outer peripheral surface and the first annular surface; and rotating the lens around the optical axis to cause the liquid material to have a diameter by centrifugal force. And a fourth step of flowing outward in the direction. It may be use. When there is a downward step (annular outer peripheral surface) on the outer peripheral portion of the lens, the liquid material scatters on the outer side in the radial direction from the step portion in the second step, and liquid on the annular outer peripheral surface and the second annular surface. Although it is difficult to properly apply the product, the liquid material can be appropriately applied also to the annular outer peripheral surface and the second annular surface by performing the third and fourth steps.

In the present invention, in the third step, while the liquid material is supplied from the liquid material discharge nozzle toward the boundary between the annular outer peripheral surface and the first annular surface, the lens is rotated around the optical axis by one rotation or more. A mode of rotating can be adopted. According to such a configuration, the third step can be performed efficiently.

  In this case, in the third step, for example, the lens is rotated once around the optical axis. According to such a configuration, since the amount of the liquid material applied in the third step is stabilized, the thickness of the light shielding layer is stabilized.

  In the present invention, it is preferable that the rotation speed of the lens in the third step is slower than the rotation speed of the lens in the fourth step. According to this structure, it can suppress that a liquid substance spreads to an outer peripheral side by a centrifugal force in a 3rd process.

  In the present invention, when rotating the lens in the fourth step, it is preferable to blow air on the lens surface at an upper position of the lens. According to such a configuration, an air flow from the radially inner side to the radially outer side is generated on the one surface side of the lens. Therefore, in the fourth step, even if the liquid material flowing along the annular inner peripheral surface of the lens scatters as droplets or the like on the outer side in the radial direction of the lens, the scattered liquid material is prevented from adhering to the lens. be able to.

  In the present invention, in the third step and the fourth step, the lens is supported by a lens pedestal with the one surface facing upward, and when the lens is rotated in the fourth step, air around the lens Is preferably sucked upward or downward. When the lens cradle is rotated at a high speed in the fourth step, even if the liquid material is scattered from the lens as droplets or the like, the liquid material is removed from around the lens by the air flow. For this reason, it can suppress that the scattered liquid substance adheres to a lens.

  In this case, when rotating the lens in the fourth step, it is preferable to suck air upward around the lens. When the lens cradle is rotated at a high speed in the fourth step, even if the liquid material scatters upward from the lens as droplets or the like, the liquid material is removed from around the lens by the air flow. For this reason, it can suppress that the scattered liquid substance adheres to a lens.

  In the present invention, in the third step, the lens is rotated one or more times around the optical axis while supplying the liquid material from the liquid material discharge nozzle toward the boundary between the annular side surface region and the first annular surface. It is preferable to rotate. According to such a configuration, the third step can be performed efficiently. In the present invention, the liquid material discharge nozzle used in the first step is different from the liquid material discharge nozzle used in the third step, the liquid material discharge nozzle used in the first step, and the liquid material discharge used in the third step. Any of the configurations common to the nozzles may be adopted.

  In the present invention, in the third step, it is preferable that the lens is rotated once around the optical axis. According to such a configuration, since the amount of the liquid material applied in the third step is stabilized, the thickness of the light shielding layer is stabilized.

  In the present invention, it is preferable that the rotation speed of the lens in the third step is slower than the rotation speed of the lens in the fourth step. According to this structure, it can suppress that a liquid substance spreads to an outer peripheral side by a centrifugal force in a 3rd process.

  In the present invention, when supplying the liquid material from the liquid material discharge nozzle, it is preferable to adjust the temperature of the liquid material. According to such a configuration, since the viscosity of the liquid material is stabilized, the coating thickness of the liquid material is stabilized. Therefore, the thickness of the light shielding layer is stabilized.

  In the present invention, in the first step, after the liquid material for forming the light shielding layer is applied along the inner edge of the outer peripheral portion where the light shielding layer of the lens is to be formed, the viscosity of the liquid material and the thickness of the light shielding layer are applied in the second step. The lens is rotated around the optical axis at a speed corresponding to the thickness, and the liquid material is caused to flow radially outward by centrifugal force. Therefore, unlike the case where the liquid material is applied with a coating head made of a felt-like material, the amount of the liquid material that permeates the coating head does not fluctuate and the amount of application of the light shielding layer does not vary. Therefore, the liquid material for forming the light shielding layer can be appropriately applied to the outer peripheral portion, and the thickness of the light shielding layer is stabilized.

It is explanatory drawing of the 1st example of the lens with a light shielding layer to which this invention is applied. It is explanatory drawing of the 2nd example of the lens with a light shielding layer to which this invention is applied. It is a perspective view of the manufacturing apparatus of the lens with a light shielding layer to which this invention is applied. It is sectional drawing of the principal part of the manufacturing apparatus of the lens with a light shielding layer shown in FIG. It is a disassembled perspective view of the principal part of the manufacturing apparatus of the lens with a light shielding layer shown in FIG. It is sectional drawing of the air nozzle periphery of the manufacturing apparatus of the lens with a light shielding layer shown in FIG. It is explanatory drawing which shows the 1st example of the manufacturing method of the lens with a light shielding layer to which this invention is applied. It is explanatory drawing which shows the 2nd example of the manufacturing method of the lens with a light shielding layer to which this invention is applied. It is explanatory drawing of the example of improvement of the lens base of the manufacturing apparatus of the lens with a light shielding layer to which this invention is applied. It is sectional drawing of the lens stand shown in FIG. FIG. 10 is an exploded perspective view of the lens cradle shown in FIG. 9.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Configuration of lens with light shielding layer]
FIG. 1 is an explanatory diagram of a first example of a lens with a light-shielding layer to which the present invention is applied. FIGS. 1 (a), (b), (c), and (d) are a perspective view of a lens and a lens, respectively. It is sectional drawing, the perspective view of a lens with a light shielding layer, and sectional drawing of a lens with a light shielding layer. FIG. 2 is an explanatory diagram of a second example of a lens with a light shielding layer to which the present invention is applied. FIGS. 2 (a), (b), (c), and (d) are a perspective view of the lens and a lens of FIG. It is sectional drawing, the perspective view of a lens with a light shielding layer, and sectional drawing of a lens with a light shielding layer.

  A lens 1 with a light-shielding layer shown in FIGS. 1C and 1D is an outer peripheral portion that surrounds a concave lens surface 14 on the one surface 11 side of the lens 10 shown in FIGS. 15 is formed with a black light-shielding layer 3 called so-called black ink, which prevents extraneous light from entering and reflecting.

  In this embodiment, on the one surface 11 side of the lens 10, a first annular surface 17 that surrounds the lens surface 14 on the outer side in the radial direction on the outer peripheral portion 15, and a first annular surface 17 on the outer side in the radial direction of the first annular surface 17. A second annular surface 19 that protrudes further toward the one surface 11 side and an annular inner peripheral surface 18 that is inclined obliquely upward and connects the first annular surface 17 and the second annular surface 19 are provided. The inner side of the annular inner peripheral surface 18 is a recess 16. In the lens 10 having such a configuration, the light shielding layer 3 is formed on the first annular surface 17, the annular inner peripheral surface 18, and the second annular surface 19. The light shielding layer 3 may also be formed on the other surface 12 side of the lens 10.

  2C and 2D, the lens 2 with the light-shielding layer is an outer peripheral portion that surrounds the concave lens surface 24 on the outer side in the radial direction on the one surface 21 side of the lens 20 shown in FIGS. 2A and 2B. 25, a black light-shielding layer 3 called so-called black is formed to prevent extraneous light from entering and reflecting.

  In this embodiment, on the one surface 21 side of the lens 20, a first annular surface 27 that surrounds the lens surface 24 on the outer periphery in the outer peripheral portion 25, and a first annular surface 27 on the radially outer side of the first annular surface 27. A second annular surface 29 that is recessed toward the other surface 12 and an annular outer peripheral surface 28 that connects the first annular surface 27 and the second annular surface 29 are provided. In the lens 20 having such a configuration, the light shielding layer 3 is formed on the first annular surface 27, the annular outer peripheral surface 28, and the second annular surface 29. The light shielding layer 3 may also be formed on the other surface 22 side of the lens 20.

  Here, the light shielding layer 3 shown in FIGS. 1 and 2 is a coating film obtained by applying a liquid material 30 for forming the light shielding layer and then solidifying it by scattering the solvent. The thickness of the light shielding layer 3 is, for example, 5 to 10 μm.

[Equipment for manufacturing lens with light shielding layer]
(overall structure)
FIG. 3 is a perspective view of a lens manufacturing apparatus 40 to which the present invention is applied. 4 is a cross-sectional view of a main part of the manufacturing apparatus 40 for the lens with a light shielding layer shown in FIG. 5 is an exploded perspective view of a main part of the manufacturing apparatus 40 for a lens with a light shielding layer shown in FIG. 3. FIG. 5 (a) is an exploded perspective view with the hood removed, and FIG. 5 (b) is an air nozzle. It is a disassembled perspective view of the state which removed.

  The manufacturing apparatus 40 shown in FIGS. 3, 4, and 5 is an apparatus for forming the light shielding layer 3 when manufacturing the lenses 1 and 2 with the light shielding layer described with reference to FIGS. 1 and 2. In addition, in the following description, it demonstrates centering on the case where the lens 10 is mounted on the manufacturing apparatus 40 among the said lenses 10 and 20, and the lens 1 with a light shielding layer is manufactured.

  The manufacturing apparatus 40 according to the present embodiment is configured as a spin coater, and a light receiving layer is formed on the inner edge of a region where the light shielding layer 3 of the lens 10 is to be formed, and the lens base 60 that supports the lens 10 with one surface 11 facing upward. A liquid material discharge nozzle 90 for supplying a liquid material for use, a rotation driving mechanism 70 for rotating the lens receiving base 60 around the optical axis L of the lens 10, and a fixed base 50 for supporting the rotation driving mechanism 70 and the like. ing.

  The liquid material discharge nozzle 90 is connected to a container 95 that stores the liquid material via a pipe 96. The liquid material is obtained by dispersing a black colorant in a solvent, and the viscosity changes depending on the temperature. Therefore, a temperature adjusting device 97 that adjusts the temperature of the liquid material discharged from the liquid material discharge nozzle 90 is provided in at least one of the liquid material discharge nozzle 90, the container 95, and the pipe 96. In this embodiment, a heater 98 is provided in the container 95 as the temperature adjustment device 97, and the liquid material is adjusted to a temperature of, for example, 35 ° C. and discharged from the liquid material discharge nozzle 90.

  As shown in FIGS. 4 and 5, the lens pedestal 60 is connected to the upper end portion of the rotation shaft 71 of the rotation drive mechanism 70 and supports the lens 10 with one surface 11 facing upward. The lens pedestal 60 has a cylindrical portion 61 whose upper end supporting the lens 10 has a shape corresponding to the other surface 12 side of the lens 10. When the lens 10 is installed in the cylindrical portion 61, the lens 10 is aligned. Is done. As a result, the optical axis L of the lens 10 coincides with the central axis L71 of the rotation shaft 71. In the lens cradle 60, a lens suction portion 65 that sucks the other surface 12 of the lens 10 is provided at the bottom of the cylindrical portion 61. A vacuum suction chuck or a pressure-sensitive adhesive sheet can be used as the lens suction portion 65. In this embodiment, a pressure-sensitive adhesive sheet is used as the lens suction portion 65.

As shown in FIGS. 3 and 4, in the rotation drive mechanism 70, the rotation shaft 71 is connected to the motor 75, and when the rotation shaft 71 rotates to the central axis L <b> 71, the lens cradle 60 has the optical axis L. And it rotates around the center axis L71. In the rotation drive mechanism 70, when rotating the rotation shaft 71, the rotation shaft 71 and the motor 75 are connected via a transmission mechanism such as a pulley or a belt in addition to the configuration in which the motor 75 is directly connected to the rotation shaft 71. You may employ | adopt the structure which is.

  The motor 75 is fixed to the base plate 51 of the fixed base 50. The fixed base 50 includes a plurality of support shafts 52 extending upward from the base plate 51, a support plate 53 fixed to the upper end portion of the support shaft 52, and a plurality of supports extending upward from the support plate 53. The shaft 54 has a support plate 58 fixed to the upper end portion of the support shaft 54.

  A first plate 55 is fixed on the upper surface of the support plate 58. The first plate 55 includes a disc-shaped bottom plate portion 551 in which a hole 555 for projecting the rotating shaft 71 and the lens pedestal 60 upward is formed, and a side plate portion 552 projecting upward from the outer edge of the bottom plate portion 551. Have. A circular bottom plate portion 561 of the second plate 56 is fixed to the upper surface of the bottom plate portion 551 of the first plate 55, and the bottom plate portion 561 communicates with the hole 555 of the first plate 55, and the rotating shaft 71 and A cylindrical portion 565 for projecting the lens cradle 60 upward is formed. The bottom plate portion 561 of the second plate 56 has a smaller diameter than the bottom plate portion 551 of the first plate 55, and the side plate portion 562 protrudes upward from the outer edge of the bottom plate portion 561 inside the side plate portion 552 of the first plate 55. . As a result, the lower side of the lens pedestal 60 is partitioned by the bottom plate portion 551 of the first plate 55 and is scattered when the liquid material is applied to the lens 10 by the first plate 55 and the second plate 56. A collection unit for collecting the liquid droplets and the like is formed.

(Configuration of hood 87 and air nozzle 81)
6 is a cross-sectional view of the periphery of the air nozzle 81 of the light-shielding layer-equipped lens manufacturing apparatus 40 shown in FIG. 3, and FIGS. 6A and 6B are cross-sectional views when the lens 10 is omitted, and the lens, respectively. 10 is a cross-sectional view of FIG.

  As shown in FIG. 3, in the manufacturing apparatus 40 of this embodiment, a cover 88 that covers the upper side of the lens cradle 60 is provided, and the cover 88 sucks air from the inside of the cover 88 to the upper side of the cover 88. A suction mechanism 89 is provided. In this embodiment, the cover 88 includes a cylindrical portion 881 to which the duct 891 of the suction mechanism 89 is connected, and a cylindrical conical portion 882 whose diameter is increased obliquely downward from the cylindrical portion 881.

  As shown in FIGS. 4 and 5, in the manufacturing apparatus 40 of the present embodiment, an air nozzle 81 that blows air onto the lens surface 14 at an upper position of the lens 10 is provided. In this embodiment, the air nozzle 81 is a movable type connected to the lifting device 80 together with the cover 88. More specifically, the air nozzle 81 and the cover 88 are connected to the lifting device 80, and the lifting device 80 allows the air nozzle 81 and the cover 88 to move in the vertical direction of the lens 10.

  In realizing such a configuration, a connecting plate portion 883 is formed at the lower end of the cover 88, and the cover 88 is connected to the cylindrical connecting member 85 via the connecting plate portion 883. The connecting member 85 includes an annular flange portion 851 connected to the cover 88, an arm portion 852 extending radially inward from the flange portion 851, and an annular end connected to the radially inner end of the arm portion 852. A cylindrical nozzle holder 86 holding the air nozzle 81 inside is held inside the annular portion 853. In this embodiment, as shown in FIG. 6, the tip 811 of the air nozzle 81 protrudes downward from the lower end 861 of the nozzle holder 86.

  As shown in FIGS. 3, 4, and 5, in the connecting member 85, a cylindrical tube portion 855 protrudes downward from the flange portion 851, and the tube portion 855 surrounds the lens base 60. It is out. Therefore, in this embodiment, the cover 88 and the cylinder portion 855 of the connecting member 85 constitute a hood 87 that covers the upper side and the periphery of the lens receiving base 60.

  In the connecting member 85, an annular ring 84 connected to the connecting member 85 on the lower surface of the flange portion 851 is connected to the upper end of the cylindrical portion 855. The ring 84 is formed with a connecting plate 840 that protrudes radially outward. The connecting plate 840 is connected to the lifting device 80 shown in FIG.

  In FIG. 3, the lifting device 80 includes a fixed plate 804 and a cylinder device 805 supported by the fixed plate 804, and an output shaft 806 of the cylinder device 805 is connected to the connecting plate 840 via a movable member 807. It is connected. For this reason, if the cylinder device 805 is operated, the connecting member 85, the cover 88, and the air nozzle 81 can be moved up and down. Therefore, the air nozzle 81 and the hood 87 can move between a position where the air nozzle 81 appears above the lens 10 and a position where the air nozzle 81 and the hood 87 are further retracted from the upper side of the lens 10 and opened upward.

[First example of manufacturing method of lens with light shielding layer]
(Production method)
FIG. 7 is an explanatory view showing a first example of a manufacturing method of a lens with a light shielding layer to which the present invention is applied. Although the manufacturing method of the lens 1 with a light shielding layer will be described with reference to FIG. 7, in the following description, FIG. 3, FIG. 4, FIG. 5, and FIG.

  In manufacturing the lens 1 with the light shielding layer shown in FIG. 1, first, after forming the lens 10 shown in FIG. 7A, the lens 10 is placed on the lens base 60 of the manufacturing apparatus 40.

  Next, in the first step, the liquid material 30 for forming the light shielding layer is applied over the entire circumference along the inner edge of the outer peripheral portion 15 of the lens 10 (the inner edge of the first annular surface 17). In this embodiment, the lens base 60 holding the lens 10 is rotated around the optical axis L one or more turns while supplying the liquid 30 from the liquid discharge nozzle 90 toward the inner edge of the outer peripheral portion 15 of the lens 20. The liquid 30 for forming the light shielding layer is applied over the entire circumference along the inner edge of the outer peripheral portion 15 by rotating at a speed. In this embodiment, the lens pedestal 60 holding the lens 10 is rotated once around the optical axis L. During the first step, the air nozzle 81, the hood 87, and the connecting member 85 are in a state in which the upper side of the lens 10 is opened while being retracted further upward from the upper side of the lens 10.

  Next, in the second step, the lens base 60 that supports the lens 10 is rotated around the optical axis L at a second speed higher than the first speed, and the liquid 30 is caused to flow radially outward by centrifugal force. The liquid material 30 is applied to the outer peripheral portion 15 (the first annular surface 17, the annular inner peripheral surface 18, and the second annular surface 19). The rotational speed of the lens cradle 60 in the second step is, for example, 5,000 to 30,000 rpm. Meanwhile, the solvent is volatilized from the liquid 30 and the light shielding layer 3 is formed.

  When performing the second step, the air nozzle 81, the hood 87, and the connecting member 85 are lowered to the upper side of the lens 10. At that time, as shown in FIG. 6B, the tip 811 of the air nozzle 81 is located in the recess 16 surrounded by the annular inner peripheral surface 18 of the lens 10. Further, the lower end portion 861 of the nozzle holder 86 is in a state where the opening of the recess 16 is partially blocked around the air nozzle 81. Accordingly, in the concave portion 16 of the lens 10, an outward air flow is generated along the concave portion 16 from the center of the concave portion 16 (center of the lens surface 14) as indicated by a dotted arrow S in FIG.

If the liquid 30 cannot be sufficiently applied to the second annular surface 19 in the second step due to the influence of the angle of the annular inner peripheral surface 18 of the lens 10, the third step shown in FIG. While the liquid material 30 is supplied from the liquid material discharge nozzle 90 toward the inner edge of the second annular surface 19, the lens cradle 60 holding the lens 10 is rotated around the optical axis L at a third speed at least once. Then, the liquid 30 for forming the light shielding layer is applied along the inner edge of the second annular surface 19 over the entire circumference. In this embodiment, the lens pedestal 60 holding the lens 10 is rotated once around the optical axis L. During the third step, the air nozzle 81, the hood 87, and the connecting member 85 are in a state in which the upper side of the lens 10 is opened while being retracted further upward from the upper side of the lens 10. Next, in the fourth step, the lens base 60 that supports the lens 10 is rotated around the optical axis L at a fourth speed higher than the third speed, and the liquid 30 is caused to flow radially outward by centrifugal force. A liquid 30 is applied to the second annular surface 19. The rotational speed of the lens cradle 60 in the fourth step is, for example, 5,000 to 30,000 rpm. In the fourth step, as in the second step, the air nozzle 81, the hood 87, and the connecting member 85 are preferably lowered to the upper side of the lens 10 as shown in FIG. 6B.

(Main effects of the first example of the manufacturing method)
As described above, in this example, after the liquid material 30 for forming the light shielding layer is applied over the entire circumference along the inner edge of the outer peripheral portion 15 of the lens 10 in the first step, the liquid material 30 is applied in the second step. The lens base 60 that supports the lens 10 is rotated around the optical axis L at a speed corresponding to the viscosity of the light-shielding layer 3 and the thickness of the light-shielding layer 3, and the liquid 30 is caused to flow radially outward by centrifugal force. 15 is coated with a liquid 30. For this reason, unlike the case where a coating head made of a felt-like material is used, there does not occur a situation in which the amount of the liquid that permeates into the coating head varies. Therefore, the liquid 30 for forming the light shielding layer 3 can be appropriately applied to the outer peripheral portion, and the thickness of the light shielding layer 3 is stabilized.

  In the first step, the lens base 60 holding the lens 10 is rotated about the optical axis L one or more times while supplying the liquid 30 from the liquid discharge nozzle 90 toward the inner edge of the outer peripheral portion 15 of the lens 10. In order to rotate, a 1st process can be performed efficiently. Further, in the first step, the lens base 60 holding the lens 10 is rotated once around the optical axis L, so that the amount of the liquid material 30 applied in the first step is stabilized. Therefore, the thickness of the light shielding layer 3 is stabilized.

  Further, since the rotational speed (first speed) of the lens cradle 60 in the first process is slower than the rotational speed (second speed) of the lens cradle 60 in the second process, the liquid material 30 is subjected to centrifugal force in the first process. Can be prevented from spreading to the outer peripheral side.

  Further, in this embodiment, on the one surface 11 side of the lens 10, a second annular surface 19 projecting from the first annular surface 17 to the one surface 11 side outside the first annular surface 17 on the outer peripheral portion 15. An annular inner peripheral surface 18 formed of an inclined surface that is inclined obliquely upward and connects the first annular surface 17 and the second annular surface 19 is provided. For this reason, in the second step, the liquid material 30 that has flowed along the annular inner peripheral surface 18 of the lens 10 is shown in FIG. 6B and FIG. It is easy to scatter as a droplet etc. outside. However, in this embodiment, the hood 87 is disposed around the lens 10, and air is sucked upward from the inside of the hood 87 by the suction mechanism 89. For this reason, even if the liquid material 30 scatters from the lens 10 as a droplet or the like, the liquid material 30 is sucked to the outside of the hood 87. For this reason, it is possible to suppress the scattered liquid material 30 from adhering to the lens 10.

Further, the air nozzle 81 generates an air flow from the radially inner side to the outer side on the one surface 11 side of the lens 10. In particular, since the tip 811 of the air nozzle 81 is located in the recess 16 surrounded by the annular inner peripheral surface 18 of the lens 10, an air flow from the radially inner side to the outer side is efficiently generated. For this reason, even if the liquid 30 flowing along the annular inner peripheral surface 18 of the lens 10 scatters as droplets or the like outside the lens 10, the scattered liquid 30 is prevented from adhering to the lens 10. Can do. Further, since the lower end portion 861 of the nozzle holder 86 partially blocks the opening of the concave portion 16 of the lens 10 around the air nozzle 81, the lens surface on which the scattered liquid material 30 is located in the concave portion 16 of the lens 10. 14 can be reliably suppressed.

  Furthermore, since the temperature adjusting device 97 for adjusting the temperature of the liquid material 30 supplied from the liquid material discharge nozzle 90 is provided, the viscosity of the liquid material 30 is stabilized. Therefore, since the coating thickness of the liquid 30 is stabilized, the thickness of the light shielding layer 3 is stabilized.

[Second example of manufacturing method of lens with light shielding layer]
(Production method)
FIG. 8 is an explanatory view showing a second example of a manufacturing method of a lens with a light shielding layer to which the present invention is applied. Although the manufacturing method of the lens 2 with a light shielding layer will be described with reference to FIG. 8, FIGS. 3, 4, 5, and 6 are also referred to as appropriate in the following description.

  In manufacturing the lens 2 with the light shielding layer shown in FIG. 2, first, after forming the lens 20 shown in FIG. 8A, the lens 20 is placed on the lens base 60 of the manufacturing apparatus 40. In this example, the air nozzle 81, the hood 87, and the connecting member 85 are further retracted upward from the upper side of the lens 20 so that the upper side of the lens 20 is opened. However, in the first step and the third step, the air nozzle 81, the hood 87 and the connecting member 85 are further retracted from the upper side of the lens 20, and in the second step and the fourth step, the air nozzle 81, the hood 87 and the connecting member 85 are connected. The member 85 may be lowered.

  Next, in the first step, the liquid material 30 for forming the light shielding layer is applied over the entire circumference along the inner edge of the outer peripheral portion 25 of the lens 20 (the inner edge of the first annular surface 27). In this embodiment, the lens base 60 holding the lens 20 is rotated about the optical axis L one or more times while supplying the liquid 30 from the liquid discharge nozzle 90 toward the inner edge of the outer peripheral portion 25 of the lens 20. The liquid 30 for forming the light shielding layer is applied over the entire circumference along the inner edge of the outer peripheral portion 25 by rotating at a speed. In this embodiment, the lens base 60 holding the lens 20 is rotated once around the optical axis L.

  Next, as shown in FIG. 8B, in the second step, the lens pedestal 60 that supports the lens 20 is rotated around the optical axis L at a second speed higher than the first speed, and is liquefied by centrifugal force. The liquid 30 is applied to the first annular surface 27 by causing the liquid 30 to flow outward in the radial direction. The rotational speed of the lens cradle 60 in the second step is, for example, 5,000 to 30,000 rpm.

  At the time of the second step, on the one surface 21 side of the lens 20, a second annular shape that is recessed toward the other surface 22 side from the first annular surface 27 on the outer peripheral portion 25 on the radially outer side of the first annular surface 27. Since the surface 29 and the annular outer peripheral surface 28 that connects the first annular surface 27 and the second annular surface 29 are provided, in the second step, on the radially outer side from the stepped portion (annular outer peripheral surface 28), As indicated by the arrow N, the liquid material 30 is scattered and it is difficult to properly apply the liquid material 30 to the annular outer peripheral surface 28 and the second annular surface 29.

  Therefore, in this embodiment, after the second step, in the third step shown in FIG. 8C, the liquid material 30 is applied over the entire circumference along the boundary between the annular outer peripheral surface 28 and the first annular surface 27. In this embodiment, while supplying the liquid material 30 from the liquid material discharge nozzle 90 toward the boundary between the annular outer peripheral surface 28 of the lens 20 and the first annular surface 27, the lens cradle 60 holding the lens 20 is moved along the optical axis L. The liquid material 30 is applied over the entire circumference along the boundary between the annular outer peripheral surface 28 and the first annular surface 27 by rotating around the periphery at a third speed. In this embodiment, the lens base 60 holding the lens 20 is rotated once around the optical axis L.

Next, as shown in FIG. 8D, in the fourth step, the lens pedestal 60 supporting the lens 20 is rotated around the optical axis L at a fourth speed higher than the third speed, and the liquid is generated by centrifugal force. The material 30 is caused to flow radially outward, and the liquid material 30 is applied to the annular outer peripheral surface 28 and the second annular surface 29.
Meanwhile, the solvent is volatilized from the liquid 30 and the light shielding layer 3 is formed. The rotational speed of the lens cradle 60 in the fourth step is, for example, 5,000 to 30,000 rpm.

(Main effects of the second example of the manufacturing method)
As described above, in this example, after the light shielding layer forming liquid material 30 is applied over the entire circumference along the inner edge of the outer peripheral portion 25 of the lens 20 in the first step, the liquid material 30 is formed in the second step. The lens base 60 that supports the lens 20 is rotated around the optical axis L at a speed corresponding to the viscosity of the light-shielding layer 3 and the thickness of the light-shielding layer 3, and the liquid 30 is caused to flow radially outward by centrifugal force. A liquid 30 is applied to 25. For this reason, unlike the case where a coating head made of a felt-like material is used, there does not occur a situation in which the amount of the liquid that permeates into the coating head varies. Therefore, the liquid 30 for forming the light shielding layer 3 can be appropriately applied to the outer peripheral portion, and the thickness of the light shielding layer 3 is stabilized. In the first step, the lens base 60 holding the lens 20 is rotated about the optical axis L one or more times while supplying the liquid 30 from the liquid discharge nozzle 90 toward the inner edge of the outer peripheral portion 25 of the lens 20. In order to rotate, a 1st process can be performed efficiently.

  Further, in the first step, the lens base 60 holding the lens 20 is rotated once around the optical axis L, so that the amount of the liquid material 30 applied in the first step is stabilized. Therefore, the thickness of the light shielding layer 3 is stabilized. Further, since the rotational speed (first speed) of the lens cradle 60 in the first process is slower than the rotational speed (second speed) of the lens cradle 60 in the second process, the liquid material 30 is subjected to centrifugal force in the first process. Can be prevented from spreading to the outer peripheral side.

  Further, in the present embodiment, in the second step, the liquid material 30 scatters as shown by an arrow N on the outer side in the radial direction from the stepped portion (annular outer circumferential surface 28), and the annular outer circumferential surface 28 and the second annular surface 29. It is difficult to apply the liquid 30 properly. However, in this embodiment, after the second step, in the third step shown in FIG. 8C, the liquid material 30 is applied over the entire circumference along the boundary between the annular outer peripheral surface 28 and the first annular surface 27. Further, in the fourth step shown in FIG. 8D, the lens base 60 that supports the lens 20 is rotated around the optical axis L at a fourth speed that is higher than the third speed, and the liquid material 30 is made to have a diameter by centrifugal force. The liquid 30 is applied to the annular outer peripheral surface 28 and the second annular surface 29 by flowing outward in the direction. Therefore, the light shielding layer 3 can be appropriately formed on the entire outer peripheral surface 25 of the lens 20. Further, in the third step, since the lens base 60 holding the lens 10 is rotated once around the optical axis L, the amount of the liquid material 30 applied in the third step is stabilized. Therefore, the thickness of the light shielding layer 3 is stabilized. Further, since the rotational speed (third speed) of the lens cradle 60 in the third step is slower than the rotational speed (fourth speed) of the lens cradle 60 in the fourth step, the liquid 30 is subjected to centrifugal force in the fourth step. Can be prevented from spreading to the outer peripheral side.

  Further, since the temperature adjusting device 97 for adjusting the temperature of the liquid material 30 supplied from the liquid material discharge nozzle 90 is provided, the viscosity of the liquid material 30 is stabilized. Therefore, since the coating thickness of the liquid 30 is stabilized, the thickness of the light shielding layer 3 is stabilized.

[Improvement example of lens cradle]
FIG. 9 is an explanatory view of an improved example of the lens pedestal 60 of the manufacturing apparatus 40 for a lens with a light shielding layer to which the present invention is applied, and FIGS. 9A and 9B are perspective views of the lens pedestal 60 and the like. FIG. 6 is a perspective view of a state where the second plate 56 is removed from the lens cradle 60. FIG. 10 is a cross-sectional view of the lens cradle 60 shown in FIG. FIG. 11 is an exploded perspective view of the lens cradle 60 shown in FIG. 9, and FIGS. 11 (a) and 11 (b) are an exploded perspective view with the holder removed, and a state in which the first tube portion is further removed. FIG. 9, 10 and 11 show a state in which the lens 10 shown in FIG.

As shown in FIGS. 9, 10, and 11, the lens support 60 used in the manufacturing apparatus 40 of the present embodiment includes a lens suction portion 65 that sucks the other surface 12 of the lens 10 on the upper end side of the rotation shaft 71, and A first tube portion 66 configured to be movable up and down around the lens suction portion 65, and a second tube portion 67 that receives the other surface 12 of the lens 10 between the first tube portion 66 and the lens suction portion 65. And have. As the lens suction portion 65, a vacuum suction chuck or an adhesive sheet provided on the bottom 671 of the second cylinder portion 67 can be used. In this embodiment, an adhesive sheet is used as the lens suction portion 65.

  The first tube portion 66 includes a cylindrical portion 661 that receives the outer peripheral side of the other surface 12 of the lens 10, and a flange portion 662 that protrudes radially outward at the lower end portion of the cylindrical portion 661. A flange portion 712 that protrudes radially outward is formed on the upper end side of the rotating shaft 71. An urging member 68 made of a coil spring is disposed between the flange portion 662 and the flange portion 712, and the urging member 68 urges the first tube portion 66 upward.

  In the present embodiment, the second cylindrical portion 67 is formed at the upper end portion of a cylindrical cylindrical body 670 extending coaxially with the central axis L71 of the rotating shaft 71. The cylindrical body 670 and the rotating shaft 71 are fixed to the shaft hole 672 facing downward in the cylindrical body 670 by fitting a small diameter portion 713 formed on the distal end side of the flange portion 712 in the rotating shaft 71. The cylindrical body 670 is fitted inside the first cylindrical portion 66 and functions as a guide when the first cylindrical portion 66 moves in the vertical direction. Further, the first tube portion 66 is formed with a long hole 669 extending in parallel with the central axis L71 of the rotation shaft 71. The long hole 669 has a shaft portion protruding radially outward from the tube body 670. 679 is fitted. In this way, the idling prevention mechanism 69 is constituted by the shaft portion 679 and the elongated hole 669 between the first tube portion 66 and the tube body 670.

  The lower end side of the flange portion 712 of the rotating shaft 71 is rotatably supported by two bearings 58 and 59 inside the holder 57 of the fixed base 50. A second plate 56 having a hole 566 through which the lens receiving base 60 penetrates upward is fixed on the upper surface of the holder 57.

  In the lens pedestal 60 configured in this way, the first tube portion 66 is positioned upward without the lens 10 being arranged. Here, on the other surface 12 side of the lens 10, two annular step portions 121 and 122 are formed on the outer peripheral side, and when the lens 10 is disposed on the lens pedestal 60, the cylindrical portion of the first cylindrical portion 66. 661 contacts the annular step 121 on the outer peripheral side.

  In this state, when the lens 10 is disposed on the first tube portion 66 and pressed downward, the first tube portion 66 moves downward, and the upper end portion of the second tube portion 67 is moved to the annular step 122 on the inner peripheral side. The lens 10 contacts and aligns with the lens 10. Further, the other surface 12 of the lens 10 is held by the lens adsorption portion 65. Therefore, the lens 10 is reliably supported by the lens cradle 60.

  Then, after the light shielding layer 3 is formed on the lens 10 to manufacture the lens 1 with the light shielding layer, if the first tube portion 66 is pushed down, the annular step portion 121 of the lens 1 with the light shielding layer is moved to the first tube portion 66. Therefore, the light-shielding layer-equipped lens 1 can be easily taken out.

[Other embodiments]
The manufacturing apparatus 40 may be used alone or in combination with a transfer apparatus such as a turntable method. When combined with a conveyance device such as a turntable method, an area for supplying the lenses 10 and 20 and collecting the lenses 1 and 2 with the light shielding layer along the conveyance direction of the lenses 10 and 20, an area for performing the first step, And the area which performs a 2nd process is provided. Furthermore, when performing a 3rd process and a 4th process, the area which performs a 3rd process and the area which performs a 4th process are provided in the downstream of the area which performs a 2nd process.

  In the above embodiment, the air nozzle 81 moves when the air nozzle 81 opens the upper side of the lens cradle 60. However, the lens cradle 60 moves downward and the upper side of the lens cradle 60 is opened. You may employ | adopt the aspect which becomes.

  In the above-described embodiment, the suction mechanism 89 sucks air inside the hood 855 upward. However, a mode of sucking air inside the hood 855 downward may be adopted.

  In the above embodiment, the outer peripheral portions 15 and 25 of the lenses 10 and 20 are provided with the inclined surfaces (the annular inner peripheral surface 18 and the annular outer peripheral surface 28), but the outer peripheral portions 15 and 25 are configured by flat surfaces. The present invention may be applied to a case where a light shielding layer is provided on a lens.

  In the above embodiment, when the liquid material 30 is applied along the inner edges of the outer peripheral portions 15 and 25 of the lenses 10 and 20, the liquid material 30 is discharged continuously in the circumferential direction, but intermittently liquid in the circumferential direction. The object 30 may be discharged.

  In the above embodiment, the process of applying the liquid material 30 along the inner edges of the outer peripheral portions 15 and 25 of the lenses 10 and 20 is performed by the manufacturing apparatus 40. After applying the liquid material 30 along the inner edges of the outer peripheral portions 15 and 25 of the lenses 20, the lenses 10 and 20 may be provided in the manufacturing apparatus 40.

  In the above embodiment, the third step and the fourth step are performed after the first step and the second step. However, the first step and the third step may be performed before the second step. . According to such a configuration, the liquid material can be flowed radially outward in the second step. Therefore, it is not necessary to perform the fourth step separately from the third step.

  In the said embodiment, after apply | coating the liquid substance 30 only along the inner edge of the outer peripheral parts 15 and 25 of the lenses 10 and 20, the liquid substance 30 was made to flow to radial direction outer side with a centrifugal force. However, the liquid material 30 may be applied at least along the inner edges of the outer peripheral portions 15 and 25 of the lenses 10 and 20. For example, in addition to the inner edges of the outer peripheral portions 15 and 25 of the lenses 10 and 20, The liquid material 30 may be applied further radially outward than the inner edges of the outer peripheral portions 15 and 25, and then the liquid material 30 may be flowed radially outward by centrifugal force. Furthermore, in addition to the inner edges of the outer peripheral portions 15 and 25 of the lenses 10 and 20, the liquid material 30 is applied to the entire outer peripheral portions 15 and 25 of the lenses 10 and 20, and then the liquid material is radially outward by centrifugal force. 30 may be flowed to equalize the thickness of the liquid material 30 in the outer peripheral portions 15 and 25. According to such a configuration, the liquid material 30 can be applied to a wide range of the outer peripheral portion only in the second step.

1,... Lens with light shielding layer 3... Light shielding layer 10, 20... Lens 11, 21... One surface, 12, 22. ..Outer peripheral part, 16, 26..Recess, 17, 27..First annular surface, 18..annular inner peripheral surface, 19, 29..Second annular surface, 30..Liquid material, 40 .. 50 ··· Fixed base, 60 ··· Lens holder, 61 ··· Tube portion, 65 · · Lens adsorbing portion, · · · First tube portion, 67 · · · · Second tube portion, 68 · · · Energizing member, 70 ..Rotational drive mechanism, 71 ..Rotating shaft, 75 ..Motor, 80 ..Elevating device, 81 ..Air nozzle, 84 ..Ring, 85 ..Connecting member, 86 ..Nozzle holder, 87. 88 .. Cover (hood), 89 .. Suction mechanism, 90 .. Liquid material discharge nozzle, 97 .. Temperature adjustment device, 98. Motor, an annular stepped portion of the 121 and 122 ... lens, 805 ... cylinder device, the tip portion of 811 ... air nozzle, 855 ... tubular portion (hood), 861 the lower end of the ... nozzle holder, L ... light axis

Claims (16)

In the method of manufacturing a lens with a light shielding layer in which a light shielding layer is formed on an outer peripheral portion surrounding the lens surface on the radially outer side on at least one surface side of the lens,
After forming the lens, a first step of applying a liquid material for forming a light shielding layer over the entire circumference along the inner edge of the outer peripheral portion;
After the first step, the second step of rotating the lens around the optical axis and causing the liquid to flow radially outward by centrifugal force;
The manufacturing method of the lens with a light shielding layer characterized by having.   In the first step, the lens is rotated about the optical axis by one or more rotations while supplying the liquid material from the liquid material discharge nozzle toward the inner edge of the outer peripheral portion. The manufacturing method of the lens with a light shielding layer of description.   3. The method for manufacturing a lens with a light shielding layer according to claim 2, wherein in the first step, the lens is rotated once around the optical axis.   4. The method for manufacturing a lens with a light-shielding layer according to claim 2, wherein the rotation speed of the lens in the first step is slower than the rotation speed of the lens in the second step. 5.   5. The method for manufacturing a lens with a light shielding layer according to claim 1, wherein when the lens is rotated in the second step, air is blown onto the lens surface at an upper position of the lens. In the first step and the second step, the lens is supported by a lens cradle with the one surface facing upward,
6. The method for manufacturing a lens with a light shielding layer according to claim 1, wherein when rotating the lens in the second step, air is sucked upward or downward around the lens.   The method for manufacturing a lens with a light shielding layer according to claim 6, wherein when rotating the lens in the second step, air is sucked upward around the lens. The lens has a first annular surface that surrounds the lens surface radially outward at the outer peripheral portion, and is recessed from the first annular surface toward the other surface side of the lens on the radial outer side of the first annular surface. A second annular surface, and an annular outer peripheral surface connecting the first annular surface and the second annular surface,
In the first step, the liquid material is applied over the entire circumference along the inner edge of the first annular surface as the inner edge of the outer peripheral portion, and at the boundary of the annular outer peripheral surface with the first annular surface. Along the entire circumference of the liquid material,
In the said 2nd process, the said lens is rotated to the surroundings of an optical axis, The said liquid substance is flowed to radial direction outer side with a centrifugal force, The light shielding layer as described in any one of Claim 1 thru | or 7 characterized by the above-mentioned. Lens manufacturing method. The lens has a first annular surface that surrounds the lens surface radially outward at the outer peripheral portion, and is recessed from the first annular surface toward the other surface side of the lens on the radial outer side of the first annular surface. A second annular surface, and an annular outer peripheral surface connecting the first annular surface and the second annular surface,
In the first step, after applying the liquid material over the entire circumference along the inner edge of the first annular surface as the inner edge of the outer peripheral portion, in the second step, the lens is rotated around the optical axis. , Causing the liquid to flow radially outward by centrifugal force,
after that,
A third step of applying the liquid material over the entire circumference along a boundary between the annular outer peripheral surface and the first annular surface;
A fourth step of rotating the lens around the optical axis and causing the liquid to flow radially outward by centrifugal force;
The method for manufacturing a lens with a light shielding layer according to claim 1, wherein:   In the third step, the lens is rotated around the optical axis by one or more rotations while supplying the liquid material from the liquid material discharge nozzle toward the boundary between the annular outer peripheral surface and the first annular surface. The manufacturing method of the lens with a light shielding layer of Claim 9 characterized by the above-mentioned.   The method for manufacturing a lens with a light shielding layer according to claim 10, wherein in the third step, the lens is rotated once around the optical axis.   The method for manufacturing a lens with a light-shielding layer according to claim 10 or 11, wherein a rotation speed of the lens in the third step is slower than a rotation speed of the lens in the fourth step.   13. The method for manufacturing a lens with a light shielding layer according to claim 9, wherein air is blown onto the lens surface at an upper position of the lens when the lens is rotated in the fourth step. In the third step and the fourth step, the lens is supported by a lens cradle with the one surface facing upward,
14. The method for manufacturing a lens with a light-shielding layer according to claim 7, wherein air is sucked upward or downward around the lens when the lens is rotated in the fourth step.   The method for manufacturing a lens with a light shielding layer according to claim 14, wherein when rotating the lens in the fourth step, air is sucked upward around the lens.   13. The method for manufacturing a lens with a light-shielding layer according to claim 2, wherein the temperature of the liquid material is adjusted when the liquid material is supplied from the liquid material discharge nozzle. .

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