Method for manufacturing eyeglass lens and manufacturing apparatus

Abstract

To provide a method for manufacturing an eyeglass lens and a manufacturing apparatus which are capable of applying a coating liquid to a lens surface with high accuracy and in a short time.SOLUTION: The method for manufacturing an eyeglass lens includes: an information acquisition step of acquiring lens shape information from a storage unit; a measurement step of measuring a lens substrate L and acquiring lens thickness information; and a coating step of ejecting and applying a coating liquid from a spray nozzle 52 onto a lens surface L1 of the lens substrate L. In the coating step, the coating liquid is applied onto the lens surface L1 on the basis of the lens shape information acquired in the information acquisition step and the lens thickness information acquired in the measurement step.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a method and an apparatus for manufacturing eyeglass lenses. [Background technology]

[0002] BACKGROUND ART Conventionally, a method for manufacturing eyeglass lenses is known that includes a coating step in which a coating liquid is sprayed onto the lens surface of a lens substrate from a spray nozzle (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-246268 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, in the coating process, in order to properly apply the coating liquid to the lens surface, it is necessary to precisely control the distance between the ejection nozzle and the lens surface. However, if one attempts to measure the shape of the lens substrate before the coating process in order to precisely control the distance, there is a problem in that the measurement takes a long time.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus for manufacturing eyeglass lenses that has a simple configuration and that allows for the application of a coating liquid to a lens surface with high precision and in a short time. [Means for solving the problem]

[0006] The method for manufacturing eyeglass lenses of the present invention solves the above-mentioned problems by comprising an information acquisition step of acquiring lens shape information from a memory unit, a measurement step of measuring a lens substrate to acquire lens thickness information, and a coating step of spraying a coating liquid from a spray nozzle onto the lens surface of the lens substrate based on the lens shape information acquired in the information acquisition step and the lens thickness information acquired in the measurement step. The eyeglass lens manufacturing apparatus of the present invention solves the above problem by comprising an information acquisition unit that acquires lens shape information from a memory unit, a measuring instrument that measures the lens substrate to acquire lens thickness information, and an application device that sprays a coating liquid from a spray nozzle onto the lens surface of the lens substrate based on the lens shape information acquired by the information acquisition unit and the lens thickness information acquired by the measuring instrument. [Effects of the Invention]

[0007] According to the present invention, the application of the coating liquid to the lens surface can be achieved with high precision and in a short time. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an explanatory diagram showing a schematic configuration of a spectacle lens manufacturing apparatus according to an embodiment of the present invention; [Figure 2] FIG. 10 is an explanatory diagram showing one aspect of an information acquisition step. [Figure 3] FIG. 4 is an explanatory diagram showing one embodiment of a measurement process. [Figure 4] FIG. [Figure 5] 1 is a table showing the effects of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] An eyeglass lens manufacturing apparatus 10 and manufacturing method according to one embodiment of the present invention will be described below with reference to the drawings. [Eyeglass lens manufacturing equipment]

[0010] First, the eyeglass lens manufacturing apparatus 10 of this embodiment will be described below.

[0011] The manufacturing apparatus 10 manufactures eyeglass lenses by performing various processes on a transparent lens substrate L, and as shown in FIG. 1, is equipped with an information acquisition unit 30 that acquires lens shape information from a memory unit 20, a measuring instrument 40 that measures the lens substrate L to acquire lens thickness information, a coating device 50 that applies a coating liquid to a lens surface L1 of the lens substrate L, a UV irradiation device 60 that hardens the coating liquid, a back surface cutting device 70 that cuts the lens back surface L2 opposite the lens surface L1, a polishing device 80 that polishes the lens back surface L2 of the lens substrate L, a hard coat deposition device 90 that deposits a hard coat, and an edge processing device 100 that grinds the outer edge of the lens substrate L.

[0012] Each component of the manufacturing apparatus 10 will be specifically described below.

[0013] First, the information acquisition unit 30 acquires lens shape information from the storage unit 20 in an information acquisition area set near the entrance of the transport path of the manufacturing apparatus 10. More specifically, in this embodiment, as shown in FIG. 2(a), lens shape information of each lens substrate L is stored in a memory unit 20 configured as a data server connected to a control terminal of the coating device 50, and a barcode B, such as a one-dimensional barcode or a two-dimensional barcode such as a QR code (registered trademark), storing an identification ID assigned to each lens substrate L is attached to the lens back surface L2 of the lens substrate L. Then, in the information acquisition process by the information acquisition unit 30, as shown in FIG. 2, the barcode reader 31 reads the identification ID from the barcode B attached to the target lens substrate L, and the control terminal of the coating device 50 connected to the barcode reader 31 acquires the lens shape information of the target lens substrate L from the memory unit 20 based on the read identification ID. As described above, in this embodiment, the information acquisition unit 30 is configured from the barcode reader 31, the control terminal of the coating device 50, and the like.

[0014] The above lens shape information includes values ​​such as the diameter of the lens substrate L (lens surface L1), the radius of curvature of the lens surface L1, and the thickness of the lens substrate L, and each of these values ​​is a design value (lens specification) used in forming the lens substrate L. In addition, the data server and the control terminal of the coating apparatus 50 implemented as described above are configured to include a memory unit consisting of a ROM, a RAM, etc., an input unit, an output unit, a control unit consisting of a CPU, etc., a communication unit, an auxiliary storage device, etc.

[0015] The measuring instrument 40 is installed in a measurement area set downstream of the information acquisition area by the information acquisition unit 30, and is connected to the control terminal of the coating device 50, and measures the lens substrate L to acquire lens thickness information. Here, in this embodiment, the lens thickness information means, as shown in FIG. 3, the dimension H in the lens thickness direction between the support surface of the support member that supports the lens substrate L from the lens back surface L2 side when the dimension is measured by the measuring instrument 40, and the outermost point (the uppermost point in the example shown in FIG. 3) on the lens surface L1 of the lens substrate L. Note that the specific aspects of the lens thickness information are not limited to those described above, and may be any dimension in the lens thickness direction from a reference position in the lens thickness direction (in the example of Figure 3, the support surface of the support member) to a point on the lens surface L1 of the lens substrate L that is located on the outermost side (the uppermost side in the example shown in Figure 3), for example, it may be the dimension in the lens thickness direction from a point on the lens back surface L2 that is located on the outermost side in the lens thickness direction (the lowermost side in the example shown in Figure 3) to a point on the lens surface L1 that is located on the outermost side in the lens thickness direction (the uppermost side in the example shown in Figure 3).

[0016] As shown in FIG. 3, the measuring device 40 is preferably configured as a non-contact measuring device 40 that measures dimensions from a position away from the lens substrate L. Examples of such a non-contact measuring instrument 40 include non-contact displacement sensors (displacement meters), such as an optical displacement sensor (e.g., LS-7000 manufactured by Keyence Corporation), a laser focus displacement sensor (e.g., LK-G3000 manufactured by Keyence Corporation), an eddy current displacement sensor, an ultrasonic displacement sensor, and a capacitance displacement sensor.

[0017] As an example of dimensional measurement using a non-contact measuring instrument 40, as shown in FIG. 3, a lens substrate L is supported by a support member, and while the lens substrate L is rotated around a rotation axis that passes through the lens substrate L and extends in the lens thickness direction, the lens substrate L is measured using a non-contact measuring instrument 40 arranged on the outer periphery (side) of the lens substrate L, and lens thickness information is obtained. When measurements are taken while rotating the lens substrate L in this way, lens thickness information can be measured accurately regardless of the position in the lens radial direction of the outermost portion (vertex) of the lens surface L1.

[0018] The coating device 50 coats the lens surface L1 of the lens substrate L with a coating liquid, and as shown in FIG. 4, is equipped with a lens rotation support part 51 that rotatably supports the lens back surface L2 side of the lens substrate L, a spray nozzle 52 that sprays the coating liquid onto the lens surface L1 of the lens substrate L, a thickness direction relative movement part (not shown) that moves the lens substrate L and the spray nozzle 52 relatively in the lens thickness direction, and a radial direction relative movement part (not shown) that moves the lens substrate L and the spray nozzle 52 relatively in the lens radial direction.

[0019] As shown in FIG. 4, the lens rotation support part 51 adsorbs and holds the lens back surface L2 of the lens substrate L, and supports the lens substrate L rotatably around a rotation axis that passes through the lens substrate L and extends in the lens thickness direction. In this embodiment, as shown in FIG. 4, the lens rotation support section 51 supports the lens substrate L so that the lens surface L1 faces upward.

[0020] As shown in FIG. 4, in the coating process, the spray nozzle 52 is arranged above the lens substrate L supported by the lens rotation support part 51, and is configured to spray the coating liquid downward onto the lens surface L1 of the lens substrate L in a pulsed or continuous manner.

[0021] The radial relative movement part (not shown) moves the lens substrate L and the ejection nozzle 52 relatively in the lens radial direction, and in this embodiment, is configured to move the lens rotation support part 51 in the lens radial direction.

[0022] In addition, the thickness direction relative movement unit (not shown) moves the lens substrate L and the ejection nozzle 52 relatively in the lens thickness direction, and in this embodiment, it is configured to move the ejection nozzle 52 in the lens thickness direction.

[0023] In this embodiment, as shown in Figure 1, multiple (three) coating devices 50 are provided, specifically, a first coating device 50 that applies a coating liquid (primer liquid) for forming a primer layer on the lens surface L1, a second coating device 50 that applies a coating liquid (photochromic liquid) for forming a photochromic layer on the primer layer formed on the lens surface L1, and a third coating device 50 that applies a coating liquid for forming a protective layer on the photochromic layer formed on the lens surface L1.

[0024] The UV irradiation devices 60 cure the coating liquid applied to the lens surface L1 of the lens substrate L by the coating devices 50 by irradiating it with UV light, and in this embodiment, as shown in Figure 1, they are each provided downstream of multiple (three) coating devices 50.

[0025] The rear surface cutting device 70 is installed downstream of the UV irradiation device 60 and cuts the lens rear surface L2 side of the lens substrate L to form a shape that satisfies the prescription of the eyeglass lens wearer.

[0026] The polishing device 80 is installed downstream of the back surface cutting device 70 and polishes the lens back surface L2 of the lens substrate L.

[0027] The hard coat deposition device 90 is installed downstream of the polishing device 80 and deposits a hard coat on at least one of the lens surface L1 and the lens back surface L2.

[0028] The edging device 100 is installed downstream of the hard coat film forming device 90 and cuts the outer edge of the lens substrate L into a shape that fits into the rim of an eyeglass frame. [Method of manufacturing eyeglass lenses]

[0029] Next, a method for manufacturing a spectacle lens using the manufacturing apparatus 10 of this embodiment will be described below.

[0030] The method for manufacturing eyeglass lenses includes, from upstream to downstream, an information acquisition step for acquiring lens shape information from memory unit 20, a measurement step for measuring lens substrate L to acquire lens thickness information, a coating step for applying a coating liquid to lens surface L1 of lens substrate L, a UV irradiation step for curing the coating liquid, a back-side cutting step for cutting the lens back surface L2 side of lens substrate L, a hard coat deposition step for depositing a hard coat, a polishing step for polishing lens back surface L2 of lens substrate L, and an edging step for grinding the outer edge of lens substrate L.

[0031] Each step of the method for manufacturing eyeglass lenses will be specifically described below.

[0032] First, the information acquisition process is a process of acquiring lens shape information from the memory unit 20. In this embodiment, as shown in FIG. 2, the barcode reader 31 reads an identification ID from the barcode B attached to the target lens substrate L, and the control terminal of the coating device 50 connected to the barcode reader 31 acquires the lens shape information of the target lens substrate L from the memory unit 20 based on the read identification ID.

[0033] The measurement process is a downstream process of the information acquisition process, in which the lens substrate L is measured to acquire lens thickness information. In this embodiment, the lens substrate L is measured using a non-contact measuring device 40 to acquire the lens thickness information.

[0034] In this embodiment, the measurement process is described as being carried out after the information acquisition process, but the timing of carrying out the information acquisition process and the measurement process is not limited to the above, and the measurement process may be carried out before the information acquisition process, or the information acquisition process and the measurement process may be carried out at the same time.

[0035] The coating step is a step downstream of the information acquisition step and the measurement step, in which a coating liquid is applied to the lens surface L1 of the lens substrate L by the coating device 50. In the coating process, as shown in FIG. 4, the lens substrate L and the spray nozzle 52 are moved relative to each other in the lens radial direction, and the coating liquid is sprayed from the spray nozzle 52 onto the lens surface L1 of the lens substrate L rotating around the rotation axis. Specifically, in this embodiment, the lens rotation support part 51 is moved in the lens radial direction with respect to the lens substrate L which is fixed in the lens radial direction, and the coating liquid is sprayed from the spray nozzle 52 onto the lens surface L1 of the rotating lens substrate L so that the coating area where the coating liquid is applied on the lens surface L1 shifts from the outer periphery side toward the inner periphery side (center side) of the lens surface L1.

[0036] Furthermore, in the application process, based on the lens shape information acquired in the information acquisition process and the lens thickness information acquired in the measurement process, the lens substrate L and the ejection nozzle 52 are moved relatively in the lens thickness direction in accordance with the relative positional relationship between the lens surface L1 and the ejection nozzle 52 in the lens diameter direction, as shown in FIG. 4, so as to maintain the distance between the lens surface L1 and the ejection nozzle 52 in the lens thickness direction within a predetermined range (specifically, 3.0 to 5.0 mm); in this embodiment, the ejection nozzle 52 is moved in the lens thickness direction relative to the lens substrate L which is fixed in the lens thickness direction, and the application liquid is ejected from the ejection nozzle 52 onto the lens surface L1 of the lens substrate L while adjusting the distance between the lens substrate L and the ejection nozzle 52 in the lens thickness direction.

[0037] The UV irradiation process involves curing the coating liquid applied to the lens surface L1 of the lens substrate L by irradiating it with UV light using the coating device 50. In this embodiment, as can be seen from Figure 1, this process is carried out after each of the multiple (three) coating processes.

[0038] The back surface cutting process is a downstream process of the UV irradiation process, in which the back surface L2 side of the lens substrate L is cut by a back surface cutting device 70 to form a shape that satisfies the prescription of the eyeglass lens wearer.

[0039] The polishing step is a downstream step of the back surface cutting step, in which the lens back surface L2 of the lens substrate L is polished by a polishing device 80.

[0040] The hard coat forming step is a downstream step of the polishing step, in which a hard coat is formed on at least one of the lens surface L1 and the lens back surface L2 by a hard coat forming device 90.

[0041] The edging process is a downstream process of the hard coat film formation process, in which an edging device 100 is used to cut the outer edge of the lens substrate L into a shape that will fit into the rim of an eyeglass frame.

[0042] In the eyeglass lens manufacturing apparatus 10 and manufacturing method of this embodiment obtained in this manner, the coating liquid is applied from the spray nozzle 52 to the lens surface L1 based on the lens shape information acquired from the memory unit 20 in the coating process and the lens thickness information acquired in the measurement process, thereby making it possible to apply the coating liquid to the lens surface L1 with high precision and in a short time while avoiding contact of the spray nozzle 52 with the lens substrate L. That is, in order to properly apply the coating liquid to the lens surface L1 in the coating process, it is necessary to properly control the positional relationship between the ejection nozzle 52 and the lens surface L1, and lens shape information and lens thickness information are required in the coating process. However, for the lens shape information, by using design value information that has been stored in advance in memory unit 20 rather than actually measured information, the time required for actually measuring the lens shape is saved, and for the lens thickness information, by obtaining it by actually measuring the lens substrate L, it is possible to reliably prevent the ejection nozzle 52 from coming into contact with the lens substrate L due to tolerances in the molding of the lens substrate L.

[0043] The above effect will be explained in detail based on the table shown in FIG. 5. First, when applying the coating liquid without using either lens thickness information or lens shape information, as in Comparative Example 1, there is no lens thickness information for each lens substrate L, so there is no choice but to set a generous gap between the lens surface L1 and the ejection nozzle 52, such as setting the gap to approximately 10 mm to 10-odd mm, in order to avoid contact of the ejection nozzle 52 with the lens surface L1. Furthermore, there is no lens shape information (the diameter, radius of curvature, etc. of the lens surface L1), so it is not possible to appropriately adjust the gap in accordance with the lens shape of the lens substrate L to be coated. Therefore, in Comparative Example 1, as shown in the table of FIG. 5, the film formability of the coating film deteriorates (that is, the thickness of the coating film becomes uneven), and the yield also deteriorates.

[0044] Furthermore, as in Comparative Example 2, when the data regarding the lens shape and lens thickness included in the design values ​​(lens specifications) used to form the lens substrate L are used as lens shape information and lens thickness information to apply the coating liquid, it is possible to narrow the distance between the lens surface L1 and the ejection nozzle 52 compared to Comparative Example 1, for example by setting the distance to about 8 mm, and it is also possible to use the lens shape information to appropriately adjust the distance according to the lens shape of the lens substrate L to be coated, thereby enabling improved film formability and yield compared to Comparative Example 1. However, in Comparative Example 2, taking into consideration the tolerances during molding of the lens substrate L, the distance between the lens surface L1 and the ejection nozzle 52 cannot be made sufficiently narrow to avoid contact of the ejection nozzle 52 with the lens surface L1.

[0045] Furthermore, as in Comparative Example 3, when the lens substrate L is measured using a measuring device before the coating step and the data obtained from this measurement is used as lens shape information and lens thickness information to coat the coating liquid, it is possible to narrow the distance between the lens surface L1 and the ejection nozzle 52 compared to Comparative Examples 1 and 2, for example by setting the distance to about 5 mm, and it is also possible to appropriately adjust the distance according to the lens shape of the lens substrate L to be coated using the lens shape information, thereby enabling improved film formability and yield compared to Comparative Examples 1 and 2. However, measuring the lens substrate L using a measuring instrument takes time (approximately 20 seconds to measure the lens shape and lens thickness), which is problematic in terms of the time required.

[0046] Furthermore, as in the examples, when data regarding the lens shape included in the design values ​​used to form the lens substrate L is used as lens shape information, and lens thickness information obtained by measuring the lens substrate L with a measuring instrument is used to apply the coating liquid, the time required for actually measuring the lens shape can be eliminated and the required time can be shortened. In addition, by obtaining the lens thickness information by actually measuring the lens substrate L, it is possible to avoid contact of the ejection nozzle 52 with the lens substrate L due to tolerances in molding the lens substrate L, and it is possible to narrow the distance between the lens surface L1 and the ejection nozzle 52, for example by setting the distance to about 5 mm, as in Comparative Example 3. Therefore, film formability and yield can be improved compared to Comparative Examples 1 and 2.

[0047] Furthermore, by attaching the barcode B used to obtain lens shape information to the back surface L2 of the lens that is cut in the back surface cutting process that is performed after the coating process, there is no need to provide a separate process for removing the barcode B, thereby reducing the amount of work required.

[0048] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design modifications can be made without departing from the present invention as defined in the claims, such as configuring an eyeglass lens manufacturing apparatus 10 and manufacturing method by arbitrarily combining each configuration of the above or following embodiments and variations.

[0049] For example, in the above-described embodiment, the lens substrate L is described as a semi-finished lens, that is, a semi-finished lens that is a semi-finished product in which the shape of the lens front surface side, which is a convex curved surface (facing outward when worn) (a convex curved surface near the center), is in a completed state, and the shape of the lens back surface L2, which is a concave curved surface (facing the eyeball when worn) (a concave curved surface near the center), is processed in the above-described back surface cutting step to achieve a shape that satisfies the prescription of the eyeglass lens wearer, but the specific form of the lens substrate L is not limited to the above. Furthermore, in the above-described embodiment, the lens surface L1 of the lens substrate L to which the coating liquid is applied is described as the lens surface, but the lens surface L1 to which the coating liquid is applied is not limited to the above.

[0050] Furthermore, in the above-described embodiment, the coating liquid applied to the lens surface L1 of the lens substrate L is described as being a photochromic liquid or the like for forming a photochromic layer, but the specific type of coating material may be any type that can be applied to the lens surface L1 of the lens substrate L.

[0051] Furthermore, in the above-described embodiment, the information acquisition step is described as reading the identification ID assigned to the lens substrate L from the barcode B affixed to the lens substrate L, and acquiring lens shape information from the memory unit 20 based on the identification ID. However, the specific form of the information acquisition step is not limited to this, and any method may be used as long as it acquires the lens shape information stored in the memory unit 20. For example, the lens shape information may be stored in the barcode B affixed to the lens substrate L, and in the information acquisition step, the lens shape information may be acquired (read) from the barcode B by a barcode reader 31 connected to the control terminal of the coating device 50. In this case, the barcode B that stores the lens shape information constitutes the memory unit 20, and the barcode reader 31, the control terminal of the coating device 50, etc. constitute the information acquisition unit 30.

[0052] Furthermore, instead of the barcode B in the above-described embodiment (and the above-described modified examples), a tag or the like that can store information and that can read the information using a reader (for example, an RFID reader), such as an RFID tag, may be used.

[0053] Furthermore, in the above-described embodiment, the measurement step has been described as a step in which the lens substrate L is measured using a non-contact measuring device 40 such as a non-contact displacement sensor (displacement meter) to obtain lens thickness information. However, the measuring means for the lens substrate L is not limited to a non-contact type, and may be a contact type that measures the dimensions of the lens substrate L, such as a contact type displacement sensor (displacement meter) having a contactor that is brought into contact with the lens substrate L.

[0054] Furthermore, in the above-described embodiment, the lens substrate L (lens rotation support part 51) is described as being moved in the lens radial direction relative to the ejection nozzle 52, which is fixed in the lens radial direction, during the coating process. However, the manner of relative movement between the lens substrate L and the ejection nozzle 52 in the lens radial direction during the coating process is not limited to the above. Specifically, the ejection nozzle 52 may be moved in the lens radial direction relative to the lens substrate L, which is fixed in the lens radial direction, or both the lens substrate L and the ejection nozzle 52 may be moved in the lens radial direction.

[0055] Furthermore, in the above-described embodiment, in the coating process, the lens substrate L and the ejection nozzle 52 are described as being moved relative to each other in the lens radial direction so that the coating area where the coating liquid is applied to the lens surface L1 moves from the outer periphery side toward the inner periphery side of the lens surface L1. However, the specific manner in which the coating area moves is not limited to the above, and for example, the lens substrate L and the ejection nozzle 52 may be moved relative to each other so that the coating area moves from the inner periphery side toward the outer periphery side of the lens surface L1.

[0056] Furthermore, in the above-described embodiment, the coating liquid is sprayed downward from the spray nozzle 52 arranged above the lens substrate L during the coating process. However, the positional relationship between the lens substrate L and the spray nozzle 52 during the coating process is not limited to the above. For example, the coating liquid may be sprayed sideways from the spray nozzle 52 arranged horizontally to the side of the lens substrate L, or the coating liquid may be sprayed upward from the spray nozzle 52 arranged below the lens substrate L.

[0057] Furthermore, in the above-described embodiment, in order to maintain the distance between the lens substrate L and the ejection nozzle 52 in the lens thickness direction within a predetermined range during the coating process, the ejection nozzle 52 is moved in the lens thickness direction relative to the lens substrate L, which is fixed in the lens thickness direction, depending on the relative positional relationship between the lens surface L1 and the ejection nozzle 52 in the lens radial direction. However, the manner of relative movement between the lens substrate L and the ejection nozzle 52 in the lens thickness direction during the coating process is not limited to the above. Specifically, the lens substrate L may be moved in the lens radial direction relative to the ejection nozzle 52, which is fixed in the lens thickness direction, or both the lens substrate L and the ejection nozzle 52 may be moved in the lens thickness direction. [Explanation of symbols]

[0058] 10... Manufacturing equipment 20... Storage section 30... Information acquisition department 31 Barcode reader 40...Measuring instrument 50 Coating device 51 Lens rotation support part 52 Spout nozzle 60 ... UV irradiation equipment 70 Back side cutting device 80... Polishing equipment 90 Hard Coating Equipment 100...Glass processing equipment L: Lens substrate L1: Lens surface L2: Back of lens B Barcode

Claims

1. A method for manufacturing eyeglass lenses, Information acquisition process for acquiring lens shape information from the memory unit, A measurement process that measures the lens substrate and obtains lens thickness information, Based on the lens shape information acquired in the information acquisition step and the lens thickness information acquired in the measurement step, a coating step is performed in which a coating liquid is sprayed from a spray nozzle onto the lens surface of the lens substrate and applied. A method for manufacturing eyeglass lenses, characterized by comprising the following features.

2. The method for manufacturing eyeglass lenses according to claim 1, characterized in that the information acquisition step is a step of reading an identification ID assigned to the lens substrate from a barcode, and acquiring the lens shape information from the storage unit based on the identification ID, or reading the lens shape information from the barcode which serves as the storage unit.

3. The aforementioned barcode is affixed to the back surface of the lens opposite to the lens surface. The method for manufacturing eyeglass lenses according to claim 2, further comprising a back-side cutting step for cutting the back surface of the lens to which the barcode is attached, as a downstream step of the coating step.

4. The method for manufacturing eyeglass lenses according to claim 1, characterized in that the lens substrate is measured by a non-contact measuring instrument in the measurement step.

5. The method for manufacturing eyeglass lenses according to claim 4, characterized in that, in the measurement step, the lens substrate is rotated about a rotation axis that extends through the lens substrate in the lens thickness direction, and the lens substrate is measured from the outer periphery side using the non-contact measuring instrument.

6. The method for manufacturing eyeglass lenses according to claim 1, characterized in that, in the coating step, the coating liquid ejected from the ejection nozzle is applied to the lens surface while adjusting the distance between the lens surface and the ejection nozzle based on the lens thickness information and the lens shape information.

7. The method for manufacturing eyeglass lenses according to claim 6, characterized in that, in the coating step, the distance between the lens surface and the ejection nozzle is maintained at 3.0 to 5.0 mm.

8. The lens substrate has a convex curved surface and a concave curved surface. The method for manufacturing eyeglass lenses according to claim 1, wherein in the coating step, a coating solution is applied to the lens surface which is the lens surface.

9. A device for manufacturing eyeglass lenses, An information acquisition unit that acquires lens shape information from the memory unit, A measuring instrument that measures the lens substrate and obtains lens thickness information, A coating apparatus that sprays a coating liquid from a spray nozzle onto the lens surface of the lens substrate based on the lens shape information acquired by the information acquisition unit and the lens thickness information acquired by the measuring instrument, An apparatus for manufacturing eyeglass lenses, characterized by comprising the following features.

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