JP2014026193A - Method for manufacturing lens and spectacle lens manufacturing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an undulation of a lens surface while eliminating polishing for a surface to be cut from a manufacturing process.SOLUTION: A method for manufacturing lens includes: a cutting process for cutting at least one surface of a lens base material; an attaching process for attaching a predetermined coating liquid to at least a partial area of a cut surface to be cut; a pressing process which expands the coating liquid attached to the surface to be cut between an elastic surface elastically deformed by being pressed to the surface to be cut and the surface to be cut without a gap by pressing the elastic surface included in a predetermined elastic body so that the coating liquid becomes a layer having a predetermined thickness; and a curing process for curing the coating liquid expanded to an entire area of the surface to be cut by the pressing process.

Description

  The present invention relates to a method for manufacturing a lens having a coat film on a surface to be cut, and a spectacle lens manufacturing system.

  Conventionally, in order to manufacture a spectacle lens suitable for a prescription value, a lens base material (semi-finished blanks or the like) is cut by a cutting machine such as a curve generator. In cutting with this type of cutting machine, cutting traces remain on the surface of the lens substrate to be cut. The surface texture roughness due to this cutting trace is roughly divided into a short wavelength component and a medium and long wave component. The short wavelength component of the surface texture roughness is the minute unevenness that forms the cutting trace, and the medium and long wave component of the surface texture roughness is the envelope that connects the tops of the adjacent irregularities that form the cutting trace. Represents the background roughness (swell) of the surface to be cut.

  When a hard coat film or an antireflection film is formed without polishing the surface to be cut, the short wavelength component of the surface texture roughness is smoothed and substantially removed, but the medium and long wave component (swell) Is not smoothed and remains on the surface of a hard coat film or the like. Therefore, as exemplified in Patent Document 1, the surface to be cut is polished by a polishing jig after cutting, and undulation is reduced. A spectacle lens with high surface accuracy can be obtained by forming a hard coat film or an antireflection film on the surface to be cut with reduced waviness.

JP 2004-82324 A

  However, this type of polishing treatment has a problem that the burden is large both in terms of cost and time. In particular, it is difficult to polish a complicated surface shape such as a free-form surface with high accuracy, and there is a possibility that the optical performance greatly changes depending on the amount of polishing removal. Therefore, it is desired to obtain a lens with reduced waviness while omitting the polishing process for the surface to be cut from the manufacturing process.

  A method of manufacturing a lens according to an aspect of the present invention includes a cutting process for cutting at least one surface of a lens base material, and adhesion for attaching a predetermined coating liquid to at least a partial region of the cut surface to be cut. By pressing the elastic surface of the process and a predetermined elastic body against the surface to be cut, the coating liquid attached to the surface to be cut can be pressed against the surface to be cut so as to form a layer having a predetermined film thickness. And a pressing step that spreads between the elastic surface elastically deformed and the surface to be cut without a gap, and a curing step that cures the coating liquid that is spread over the entire surface to be cut in the pressing step.

  According to one aspect of the present invention, the surface of the layer of the coating liquid is transferred to the surface property of the elastic surface by pressing the elastic surface of the elastic body against the surface to be cut. Since the coating liquid is cured in this state, a coating film without undulation can be obtained in which the surface properties of the elastic surface are transferred while omitting the polishing process for the surface to be cut from the manufacturing process. As a result, shortening of production lead time and cost reduction are achieved by omitting the polishing step.

  Further, according to one aspect of the present invention, the elastic surface of the elastic body approximates to the surface to be cut, for example, so that a uniform pressure is applied to the surface to be cut in a region in surface contact with the surface to be cut. Has curvature.

  Moreover, according to one form of this invention, in order to prevent the wave | undulation on a to-be-cut surface from being visually recognized through a coat film, it is good also considering the refractive index difference of a lens base material and a coating liquid as 0.1 or less.

  According to another aspect of the invention, the elastic body may be a rotating body that can rotate about a predetermined axis. In this case, the outer peripheral surface of the rotating body surrounding the shaft is an elastic surface. In the pressing step, the rotating body is rolled on the surface to be cut while the outer peripheral surface is uniformly pressed against the surface to be cut, so that the coating liquid attached to the surface to be cut is spread over the entire surface to be cut.

  Moreover, according to one aspect of the present invention, in the pressing step, for example, the elastic surface of the elastic body is uniformly pressed to the entire surface to be cut of the lens base material.

  An eyeglass lens manufacturing system according to an aspect of the invention includes an ordering side terminal that transmits predetermined prescription information as ordering data, a design side terminal that receives ordering data and designs a spectacle lens suitable for prescription, Cutting means for cutting at least one surface of the lens base selected according to the design of the eyeglass lens by the side terminal, and attachment means for attaching a predetermined coating liquid to at least a partial region of the cut surface to be cut By pressing an elastic surface of a predetermined elastic body against the surface to be cut, the coating liquid attached to the surface to be cut is pressed against the surface to be cut so as to form a layer having a predetermined film thickness. A pressing means that spreads between the deformed elastic surface and the surface to be cut without a gap, and a curing means that cures the coating liquid spread over the entire surface of the surface to be cut by the pressing means. And butterflies.

  According to the lens manufacturing method and the spectacle lens manufacturing system according to an aspect of the present invention, a coating film having no undulation is obtained in which the surface property of the elastic surface is transferred while omitting the polishing process on the surface to be cut from the manufacturing process. Therefore, the production lead time and cost can be reduced by omitting the polishing process.

It is a block diagram which shows the structure of the spectacle lens manufacturing system for implement | achieving the manufacturing method of the spectacle lens which concerns on embodiment of this invention. It is a flowchart which shows the manufacturing process of the spectacle lens which concerns on embodiment of this invention. It is an explanatory assistance figure which assists description of the manufacturing process of the spectacle lens which concerns on embodiment of this invention. It is a figure which shows the result of the experiment about the relationship between the refractive index difference of a lens base material and a hard-coat liquid, and the visible waviness. It is a figure which shows typically the state by which the to-be-cut surface of the lens base material was pressed on the outer peripheral surface of the elastic body of a rotary body jig | tool in embodiment of this invention. It is a figure which shows the jig | tool for apply | coating a hard-coat liquid to the to-be-cut surface (convex surface) of a lens base material in embodiment of this invention. It is explanatory drawing explaining the pressing process implemented using the jig | tool by another embodiment.

  Hereinafter, a spectacle lens manufacturing system according to an embodiment of the present invention will be described with reference to the drawings.

[Eyeglass lens manufacturing system 1]
FIG. 1 is a block diagram showing a configuration of a spectacle lens manufacturing system 1 for realizing the spectacle lens manufacturing method of the present embodiment. As shown in FIG. 1, a spectacle lens manufacturing system 1 manufactures spectacle lenses in response to an order from a spectacle store 10 that orders spectacle lenses according to prescriptions to customers (planned wearers). It has an eyeglass lens manufacturing factory 20. The order to the spectacle lens manufacturing factory 20 is made through a predetermined network such as the Internet or data transmission by FAX. The orderer may include ophthalmologists and general consumers.

<Glasses store 10>
The spectacle store 10 is provided with a store computer 100. The store computer 100 is, for example, a general PC (Personal Computer), and is installed with software for ordering eyeglass lenses from the eyeglass lens manufacturing factory 20. Lens data and frame data are input to the store computer 100 through operation of a mouse, a keyboard, and the like by an eyeglass store staff. Examples of lens data include prescription values (base curve, spherical power, astigmatic power, astigmatic axis direction, prism power, prism base direction, addition power, distance PD (Pupillary Distance), near-field PD, etc.), glasses Lens wearing conditions (corneal apex distance, forward tilt angle, frame tilt angle), spectacle lens types (single focal sphere, single focal aspherical, multifocal (double focal, progressive), coating (dyeing, hard coating, Anti-reflection film, UV protection, etc.)), layout data according to customer requirements, and the like. The frame data includes the shape data of the frame selected by the customer. The frame data is managed by, for example, a barcode tag, and can be obtained by reading the barcode tag attached to the frame by a barcode reader. The store computer 100 transmits order data (lens data and frame data) to the eyeglass lens manufacturing factory 20 via the Internet, for example.

<Glasses lens manufacturing factory 20>
In the spectacle lens manufacturing factory 20, a LAN (Local Area Network) centered on the host computer 200 is constructed, and a number of terminal devices such as the spectacle lens design computer 202 and the spectacle lens processing computer 204 are connected. Yes. The spectacle lens design computer 202 and the spectacle lens processing computer 204 are general PCs, and a spectacle lens design program and a spectacle lens processing program are installed, respectively. Order data transmitted from the store computer 100 via the Internet is input to the host computer 200. The host computer 200 transmits the input order data to the spectacle lens design computer 202.

  The eyeglass lens design computer 202 is installed with a program for designing eyeglass lenses according to orders, creates lens design data based on order data (lens data), and based on order data (frame data). Create the target lens processing data. The spectacle lens design computer 202 transfers the created lens design data and target lens shape processing data to the spectacle lens processing computer 204.

[Manufacturing process of eyeglass lenses]
The spectacle lens is manufactured in accordance with lens design data and target lens shape processing data created by the spectacle lens design computer 202. FIG. 2 is a flowchart showing the manufacturing process of the spectacle lens. FIG. 3 is an explanatory auxiliary diagram for assisting in the description of the manufacturing process of the spectacle lens.

<S1 in FIG. 2 (Cutting Process)>
In order to improve productivity, the spectacle lens manufacturing factory 20 divides the frequency of the entire production range into a plurality of groups, and sets the convex curve shape (spherical shape or aspherical shape) and the lens diameter suitable for the frequency range of each group. Semi-finished blanks are prepared in advance for ordering eyeglass lenses. Semi-finished blanks are, for example, resin blanks or glass blanks.

  The operator selects semi-finished blanks according to the result of the lens design by the spectacle lens design computer 202, sets the semi-finished blank in a processing machine (for example, a cutting machine such as a curve generator) 206, and processes the spectacle lens processing computer 204. Enter the start instruction. The eyeglass lens processing computer 204 reads the lens design data and the target lens shape processing data transferred from the eyeglass lens design computer 202 and drives and controls the processing machine 206. The processing machine 206 cuts one surface of the semifinished blanks according to the lens design data to create a concave shape of the spectacle lens. Further, the processing machine 206 processes the outer peripheral surface of the uncut lens after creation of the concave shape into a peripheral shape corresponding to the target lens shape.

  In another embodiment, the semi-finished blanks may be replaced with unfinished block pieces on both sides in order to produce spectacle lenses that are better suited to the prescription of the intended wearer. In this case, each surface of the block piece is cut according to the lens design data by the processing machine 206, and a convex shape and a concave shape of the spectacle lens are created.

  Various types of coating such as a hard coat film, an antireflection film, and an ultraviolet ray cut are applied to the eyeglass lens (lens base material) after processing the target lens shape. Thereby, the spectacle lens is completed and delivered to the spectacle store 10. Here, conventionally, when a hard coat film or the like is formed on the surface to be cut that has been cut by the processing machine 206 without performing a polishing process, waviness remaining on the surface to be cut is formed on the surface of the film. I couldn't avoid the bug. In contrast, in the present embodiment, by performing the following steps, it is possible to avoid the formation of waviness on the surface of the hard coat film or the like while omitting the polishing process for the surface to be cut from the manufacturing process. . In addition, the following processes are implemented only with respect to one surface (concave surface which is a to-be-cut surface), when a lens base material is created from a semi-finished blank, and the lens base material is a block in which both surfaces are not processed. When it is made from a piece, it is carried out for each surface (a concave surface and a convex surface, which are surfaces to be cut).

<S2 in FIG. 2 (Coating liquid adhesion process)>
As shown in FIG. 3A, the lens substrate 300 cut in the process of S1 in FIG. 2 has a surface to be cut (concave surface in this embodiment) 302 facing upward, and a predetermined coat. The liquid (hard coat liquid in the present embodiment) 400 is dropped and attached onto the surface 302 to be cut from a nozzle 208 of a liquid tank (not shown). At this stage, it is not necessary to hang the hard coat liquid 400 over the entire surface to be cut 302, and the entire surface of the surface to be cut 302 is covered with a predetermined film thickness in at least a part of the region on the surface to be cut 302. Therefore, it is sufficient that the capacity necessary for this is hung down and attached.

  The waviness Wt remaining on the surface to be cut 302 (the maximum cross-sectional height of the waviness curve) can be estimated based on the machining conditions. In accordance with the swell Wt estimated here, a hard coat film thickness (amount of the hard coat liquid 400 supplied onto the surface 302 to be cut) by the hard coat liquid 400 is set. The processing conditions used for estimating the waviness Wt include, for example, the processing machine to be used, the rotation speed of the lens that is the workpiece, the feed speed, the cutting depth, the material of the semifinished blank, and the like. In the present embodiment, for example, 0.05 μm to 0.15 μm is estimated as the undulation Wt, and for example, 40 μm to 100 μm is set as the hard coat film thickness. As described later, the hard coat film 402 having the hard coat surface 404 having no waviness (and suppressed surface roughness) is obtained as described later while suppressing the hard coat film thickness with respect to the size of the waviness Wt. can get.

<S3 in FIG. 2 (pressing process)>
The hard coat liquid 400 attached to the surface to be cut 302 of the lens substrate 300 is spread substantially uniformly over the entire surface to be cut 302 using the jig 500. FIG. 3B shows an external perspective view of the jig 500. As shown in FIG. 3B, the jig 500 includes a rotating body jig 510 and a pressing jig 520. The rotating body jig 510 includes an elastic body 512, a holding body 514 that holds the elastic body 512, and a rotating shaft 516 that is erected from the holding body 514. The elastic body 512 is a molded body that can be elastically deformed, such as rubber. An outer peripheral surface (a peripheral surface surrounding the rotation shaft 516) 518 of the elastic body 512 is coated with, for example, a fluorine resin, and has a surface with low friction and suppressed surface roughness and undulation.

  The cut surface 302 of the lens base 300 is pressed against the outer peripheral surface 518 of the elastic body 512 with a predetermined pressure by the pressing jig 520. When the cut surface 302 is pressed against the outer peripheral surface 518, the elastic body 512 elastically deforms following the shape of the cut surface 302 (in other words, pressed against the cut surface 302 and the cut surface 302). The outer peripheral surface 518 deformed by the contact is brought into surface contact via the hard coat liquid 400), and the hard coat liquid 400 adhered on the cut surface 302 is predetermined between the outer peripheral surface 518 and the cut surface 302. It spreads without gaps while having a uniform thickness. The elastic body 512 has an appropriate rigidity so as not to follow minute error shapes such as a short wavelength component and a medium and long wave component of the surface texture roughness of the surface to be cut 302 when pressed by the surface to be cut 302. Yes.

  The rotation shaft 516 is configured to move in a direction orthogonal to the optical axis of the lens substrate 300 while being rotated by an actuator (not shown). As described above, by operating the rotation shaft 516, the elastic body 512 held by the holding body 514 moves on the cutting surface 302 of the lens base 300 while rotating around the rotation shaft 516. By rolling the elastic body 512 on the surface to be cut 302 in a state where the surface to be cut 302 is pressed against the elastic body 512 (in other words, the state in which the elastic body 512 is pressed against the surface to be cut 302), The attached hard coat liquid 400 can be extended between the surface to be cut 302 and the outer peripheral surface 518 of the elastic body 512 and spread over the entire surface to be cut 302.

  More specifically, the outer peripheral surface 518 of the elastic body 512 has a rotationally symmetric shape around the rotation shaft 516 and has a convex curved surface in the axial direction of the rotation shaft 516. Here, the spectacle lens manufacturing factory 20 is provided with a plurality of types of rotating jigs 510 having different curvatures (curvature radii) of convex curved surfaces. In order to carry out this process, a rotating body jig 510 having a convex curvature (curvature radius) approximate to the curvature (curvature radius) of the surface 302 to be cut of the lens base 300 is selected from a plurality of types. By pressing the surface to be cut 302 against the outer peripheral surface 518 whose curvature (curvature radius) approximates, the surface to be cut 302 receives a substantially uniform pressure in a surface contact area with the outer peripheral surface 518. Therefore, the hard coat liquid 400 attached to the surface to be cut 302 is spread almost uniformly on the surface to be cut 302.

  In order to spread the hard coat liquid 400 adhering to the cut surface 302 of the lens substrate 300 over the entire cut surface 302, several methods are conceivable. One example thereof will be described with reference to FIGS. 5 (a) to 5 (c). FIG. 5A to FIG. 5C schematically show a state in which the cut surface 302 is pressed against the outer peripheral surface 518 of the elastic body 512. In this method, the hard coating liquid 400 is adhered to the entire surface to be cut 302 in the coating liquid adhesion process of S2 of FIG. Next, in this step, as shown in FIG. 5A, one end of the cut surface 302 is pressed against the outer peripheral surface 518. In this state, the elastic body 512 is rolled toward the other end of the surface to be cut 302, whereby the hard coat liquid 400 is stretched between the surface to be cut 302 and the outer peripheral surface 518 and is uniformly applied to the entire surface to be cut 302. (See FIGS. 5B and 5C). At this time, by rotating the elastic body 512 so that the surface to be cut 302 and the outer peripheral surface 518 do not slip (idle), the thickness of the liquid layer made of the hard coat liquid 400 becomes even more uniform, and in the liquid layer. Air bubbles are difficult to enter. Note that the excessive supply of the hard coat liquid 400 onto the surface to be cut 302 leaks from the periphery of the surface to be cut 302 (the leaked hard coat liquid 400 is wiped off).

  FIG. 6 shows a jig 600 for applying the hard coat liquid 400 to the convex surface of the lens substrate 300 (the surface to be cut on the convex side of the block piece). The jig 600 is the same as the jig 500 shown in FIG. 3B except that the outer peripheral surface 618 of the elastic body 612 of the rotating body jig 610 has a concave curved surface in the axial direction of the rotating shaft 616. It has the same configuration. When the lens substrate 300 is made from a block piece that has not been processed on both sides, the hard coat liquid 400 attached to the concave surface of the lens substrate 300 is spread over the entire concave surface by the jig 500, and The hard coat liquid 400 attached to the convex surface is spread over the entire convex surface by the jig 600.

<S4 in FIG. 2 (curing step)>
The hard coat liquid 400 spread over the entire surface 302 of the lens substrate 300 is cured (heat curing, ultraviolet curing, etc.) in this step. Thereby, a spectacle lens having a hard coat film 402 formed on the surface to be cut 302 is obtained (see FIG. 3C). The spectacle lens thus obtained is subjected to various coatings such as an antireflection film, an ultraviolet ray cut, and a dye as necessary.

  In the present embodiment, the hard coat liquid 400 is elastically pressed against the cutting surface 302 by pressing the cutting surface 302 of the lens substrate 300 against the elastic body 512 (in other words, pressing the elastic body 512 against the cutting surface 302). The surface of the liquid layer made of the hard coat liquid 400 is transferred to the outer surface 518 of the body 512 without any gap. Since the hard coat liquid 400 is cured in this state, the surface property of the outer peripheral surface 518 is transferred as shown in the enlarged view of FIG. As a result, a hard coat film 402 having a hard coat surface 404 having no waviness (and having reduced surface roughness) is obtained. For this reason, shortening of production lead time and cost reduction are achieved by omitting the polishing step.

  By the way, the greater the difference in refractive index between the lens substrate 300 and the hard coat liquid 400, the greater the optical distortion corresponding to waviness due to the refracting action at the interface between the surface to be cut 302 and the hard coat film 402. The undulation on the cut surface 302 is easily perceived by the human eye through the hard coat film 402. Therefore, it is ideal to select each material of the lens substrate 300 and the hard coat liquid 400 so that the refractive index difference becomes zero.

  A plurality of types of materials for the lens substrate 300 are prepared so as to correspond to various prescription values and specifications (for example, lens thickness and weight). In the present embodiment, material a (refractive index 1.501), material b (refractive index 1.533), material c (refractive index 1.589), material d (refractive index 1.596), material e (refractive index). 1.669), material f (refractive index 1.699), material g (refractive index 1.735) are prepared. In order to suppress the difference in refractive index between the lens base 300 and the hard coat liquid 400 to 0, it is necessary to prepare all the hard coat liquid 400 corresponding to the materials a to g of the lens base 300. However, this is not desirable because it imposes a burden on production management and costs.

  Therefore, the present inventor diligently studied and experimented on the relationship between the refractive index difference between the lens substrate 300 and the hard coat liquid 400 and the visible waviness. FIG. 4 is a diagram showing the results of the experiment. The experiment was performed by irradiating a spectacle lens sample having a hard coat film 402 formed on the surface to be cut 302 with a mercury lamp and photographing the transmitted wavefront with a solid-state imaging device such as a CCD. 4A and 4B is an overall view of the sample concave surface, and the lower stage is an enlarged view of a part of the sample concave surface. 4A shows that the refractive index difference is 0.135 (the refractive index of the lens substrate 300 is 1.735, and the refractive index of the hard coat liquid 400 is 1.600), and FIG. The refractive index difference is 0.099 (the refractive index of the lens substrate 300 is 1.501, and the refractive index of the hard coat liquid 400 is 1.600).

  As shown in FIG. 4A, when the refractive index difference between the lens substrate 300 and the hard coat liquid 400 is large, the waviness on the surface to be cut 302 is visible through the hard coat film 402. On the other hand, as shown in FIG. 4B, when the difference in refractive index is small, specifically, when the difference is 0.1 or less, the undulation on the cut surface 302 substantially passes through the hard coat film 402. Cannot be seen.

  Based on the result of the experiment, in this embodiment, when the material of the lens base material 300 is a to d, the hard coat liquid 400 having a refractive index of 1.555 is selected, and the material of the lens base material 300 is the above. In the case of e to g, the hard coat liquid 400 having a refractive index of 1.701 is selected. In the former case, the refractive index difference between the lens substrate 300 and the hard coat liquid 400 falls within the range of 0.022 to 0.054, and in the latter case, the refractive index difference falls within the range of 0.002 to 0.034. It will fit. Therefore, the problem that the waviness on the surface 302 to be cut is visually recognized through the hard coat film 402 can be avoided. As described above, since it has been clarified that there is a predetermined allowable range for the refractive index difference, in the present embodiment, two types of hard coat liquids 400 to be prepared are sufficient for seven types of lens base materials 300. .

  The above is the description of the exemplary embodiments of the present invention. Embodiments of the present invention are not limited to those described above, and various modifications are possible within the scope of the technical idea of the present invention. For example, the embodiment of the present application also includes contents appropriately combined with examples and the like clearly shown in the specification or obvious examples.

  For example, the jig used in the pressing step of S3 in FIG. 2 is not limited to the jig 500 shown in FIG. 3C or the jig 600 shown in FIG. FIG. 7 is an explanatory auxiliary diagram for explaining a pressing process performed using a jig according to another embodiment. In the pressing step according to another embodiment, a balloon-shaped jig 700 that is expanded by a fluid supplied to the inside and is set in a predetermined shape is used. Specifically, as shown in FIG. 7A, the balloon surface 702 of the balloon-shaped jig 700 is pressed against the surface 302 to which the hard coat liquid 400 is attached with a predetermined pressure. The balloon surface 702 has an area where at least the entire surface to be cut 302 can be pressed. When the balloon surface 702 is pressed against the entire surface to be cut 302, the balloon-shaped jig 700 is elastically deformed following the shape of the surface to be cut 302, and the hard coat liquid 400 adhered on the surface to be cut 302 is It spreads without a gap between the balloon surface 702 deformed by pressing the work surface 302 and the work surface 302. The balloon surface 702 has an appropriate tension so as not to follow minute error shapes such as a short wavelength component and a medium and long wave component of the surface texture roughness of the surface to be cut 302 when the surface to be cut 302 is pressed. Yes.

  Here, in the eyeglass lens manufacturing factory 20, a plurality of types of balloon-shaped jigs 700 having different curvatures (curvature radii) of the balloon surface 702 are prepared in the same manner as the jigs 500 and 600. In order to perform the pressing step, a balloon-like jig 700 having a convex curvature (curvature radius) that approximates the curvature (curvature radius) of the surface 302 to be cut of the lens base 300 is selected from a plurality of types. By selecting the balloon surface 702 whose curvature (curvature radius) approximates, the balloon surface 702 can be pressed against the entire surface to be cut 302 with uniform pressure. As a result, the hard coat liquid 400 adhered on the surface to be cut 302 spreads without a gap between the surface to be cut 302 and the balloon surface 702 and spreads over the entire surface to be cut 302.

  The hard coat liquid 400 spread over the entire surface to be cut 302 is cured (heat curing, ultraviolet curing, or the like) in a state where the balloon surface 702 is pressed against the surface to be cut 302, for example. As a result, a hard coat film 402 is formed between the surface to be cut 302 and the balloon surface 702. Next, when the balloon surface 702 is separated from the hard coat film 402, a spectacle lens having the hard coat film 402 formed on the surface to be cut 302 is obtained (see FIG. 7B).

  In the above description, a balloon is used as the jig. However, a sponge may be used instead of the balloon. In this case, in order to prevent the hard coat liquid 400 from being absorbed into the sponge, for example, it is desirable to form the sponge with a high-density urethane material or attach a film to the surface of the sponge.

DESCRIPTION OF SYMBOLS 1 Eyeglass lens manufacturing system 10 Eyeglass shop 20 Eyeglass lens manufacturing factory 100 Shop computer 200 Host computer 202 Eyeglass lens design computer 204 Eyeglass lens processing computer 206 Processing machine 300 Lens base material 302 Surface to be cut 400 Hard coat liquid 402 Hard coat film 500, 600 Jig 510, 610 Rotating body jig 512, 612 Elastic body 514, 614 Holding body 516, 616 Rotating shaft 518, 618 Outer surface 520, 620 Pressing jig 700 Balloon-shaped jig 702 Balloon surface

Claims (6)

A cutting process for cutting at least one surface of the lens substrate;
An attaching step of attaching a predetermined coating liquid to at least a part of the cut surface to be cut;
By pressing an elastic surface of a predetermined elastic body against the surface to be cut, the coating liquid adhered to the surface to be cut can be pressed against the surface to be cut so as to form a layer having a predetermined film thickness. A pressing step that spreads between the elastic surface elastically deformed by the surface to be cut without a gap, and
A curing step of curing the coating liquid spread over the entire surface to be cut in the pressing step;
A method for manufacturing a lens, comprising: The elastic surface has a curvature approximating to the surface to be cut;
The manufacturing method of the lens of Claim 1. The refractive index difference between the lens substrate and the coating liquid is 0.1 or less,
The manufacturing method of the lens of Claim 1 or Claim 2. The elastic body is
A rotating body that is rotatable about a predetermined axis,
The outer peripheral surface of the rotating body surrounding the shaft is the elastic surface,
In the pressing step,
Rolling the rotating body on the surface to be cut while uniformly pressing the outer peripheral surface against the surface to be cut, thereby spreading the coating liquid attached to the surface to be cut over the entire surface to be cut;
The manufacturing method of the lens as described in any one of Claims 1-3. In the pressing step,
The elastic surface is uniformly pressed over the entire surface to be cut;
The manufacturing method of the lens as described in any one of Claims 1-3. An ordering side terminal that transmits predetermined prescription information as ordering data;
A design-side terminal that receives the order data and designs a spectacle lens suitable for the prescription;
Cutting means for cutting at least one surface of the lens base selected according to the design of the spectacle lens by the design side terminal;
An attaching means for attaching a predetermined coating liquid to at least a partial region of the cut surface to be cut;
By pressing an elastic surface of a predetermined elastic body against the surface to be cut, the coating liquid adhered to the surface to be cut can be pressed against the surface to be cut so as to form a layer having a predetermined film thickness. A pressing means that spreads between the elastic surface elastically deformed by the surface to be cut without a gap;
Curing means for curing the coating liquid spread over the entire surface to be cut by the pressing means;
An eyeglass lens manufacturing system comprising: