JP2017154077A - Coating device of antireflection paint and coating method of antireflection paint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately, continuously and efficiently coat antireflection paint even on a complicated lens in a coating part of the antireflection paint.SOLUTION: A coating device comprises a rotary table 210 for rotatingly driving a lens 10, a paint tank 200 of antireflection paint, a paint impregnation member 110 soaked in the paint tank, a micrometer head part 130 for adjusting a fine position of a paint soaking member, a contact member 190 for wiping off surplus antireflection paint, a holding member 120 for holding the paint impregnation member, a single axis robot 140 for moving the holding member, a controller 150 for successively executing operation for soaking the paint impregnation member in the paint tank, operation for contacting with the contact member and operation for moving along a coating surface of the lens by controlling the single axis robot 140, a coating pattern database 160 for storing a plurality of coating pattern data, and input means 170 for correcting coating pattern data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an antireflection paint coating apparatus and an antireflection paint coating method for applying an antireflection paint to a peripheral surface of a lens.

  An antireflection coating is applied to the peripheral surface of the lens. The application of this reflective paint is called inking, and the lens (side surface) and the like are painted black to prevent internal reflection and improve the optical performance of the lens. An apparatus for applying an antireflection coating to a lens in this way is disclosed in Patent Document 1.

  In Patent Document 1, a holding unit that holds an optical element, a coating material supply unit that supplies a coating material to be applied to the optical element, and a coating material that is supplied from the coating material supply unit by rotating are first transferred. A roll, and a second roll for transferring the paint from the first roll by rotating; a second roll for transferring the paint to the optical element; There is described an application device for applying a coating material for an optical element, which includes an inter-axis adjusting device for adjusting an axial distance between a roll and a second roll.

  Here, the application position of the antireflection coating varies depending on the shape of the lens. That is, some lenses have a stepped portion, a chamfered portion, or the like, such as a bonded lens, in addition to a simple shape. For this reason, it is necessary to apply an antireflection paint to the above-described portions in addition to the lens outer peripheral portion. In other words, the antireflection coating must be applied to the outer peripheral portion of the lens, a stepped portion, a chamfered portion, a slight portion of the outer peripheral edge of the lens polishing surface (optical surface), and the like.

  In this way, the above-mentioned automatic coating apparatus cannot be used in correspondence with various coating locations. Conventionally, such lens inking is performed by placing the lens on a rotating table (so-called locro) to prevent reflection. Actually, it is performed manually by the operator using a brush containing paint.

Japanese Patent Laid-Open No. 7-308614

  However, application of the antireflection coating by the above-described hand painting operation requires skill. In addition, since the application is performed manually, the application position slightly deviates from the application position, and most lenses need to be corrected by wiping after application drying, which requires extra man-hours for correction. It took time and effort.

  The present invention has been made in view of the above-mentioned problems, and even when the shape of the part to which the antireflection paint is applied is complicated, the antireflection paint can be continuously applied with high accuracy and the antireflection paint can be applied. It is an object of the present invention to provide an antireflection paint coating apparatus and an antireflection paint coating method that can be efficiently performed.

  According to the first aspect of the present invention, the lens to which the antireflection paint is to be applied is centered and arranged, the turntable for rotating the lens, and the antireflection paint are stored. A paint tank, a paint impregnated member immersed in the antireflective paint stored in the paint tank and impregnated with the antireflective paint, and the paint impregnated member are in contact with each other, so that the excessive antireflective paint is impregnated with the paint. A contact member wiped from the member, a holding member holding the paint impregnated member, a moving means for moving the holding member, and controlling the moving means to drive the holding member, Control means for sequentially executing an operation of immersing in the paint tank, an operation of bringing the paint impregnated member into contact with the contact member, and an operation of moving the paint impregnated member along the application surface of the lens; Characterized in that it obtain.

  According to the present invention, based on the control of the control means, the moving means moves the holding member holding the paint-impregnated member, and immerses the paint-impregnated member in the antireflection paint stored in the paint tank to prevent reflection. The paint impregnation member is impregnated with the paint. Thereafter, the moving means brings the paint-impregnated member into contact with the contact member to wipe off the excessive antireflection paint, and further moves the paint-impregnated member along the application surface of the lens disposed on the turntable. Thereby, even if it is a lens with the complicated shape of the site | part which applies an anti-reflective coating, an anti-reflective coating can be performed continuously with sufficient precision, and application | coating of an anti-reflective coating can be performed automatically.

  Similarly, the invention according to claim 2 is an application pattern data storage means for storing a plurality of application pattern data of the application surface of the antireflection paint in the type of the lens to which the antireflection paint is to be applied, and the application pattern data. And a position correcting means for correcting the specific position at.

  According to the present invention, when applying the antireflection paint to the lens, the position correction for reading the application pattern of the application surface corresponding to the lens to be applied in advance from the application pattern data storage means and correcting the application position of the read application pattern. I do. Thereby, when setting many kinds of application patterns corresponding to many kinds of lenses, an actual application pattern can be specified by a simple process, and an antireflection film can be applied by a simple procedure.

  Similarly, the invention described in claim 3 is characterized in that the holding member includes a micrometer head capable of finely adjusting the position of the paint-impregnated member vertically and in the diameter direction of the lens.

  According to the present invention, the position of the paint impregnated member can be finely adjusted in the vertical direction and the diameter direction of the lens using a micrometer head. For this reason, the deformation | transformation of a coating material impregnation member and the shift | offset | difference of the anti-reflective coating material application position resulting from application conditions can be corrected.

  Similarly, the invention according to claim 4 is characterized in that a lens to which antireflection paint is to be applied is centered and arranged, a turntable for rotating the lens, a paint tank in which the antireflection paint is stored, The paint impregnated member immersed in the antireflective paint stored in the paint tank and impregnated with the antireflective paint contacts the paint impregnated member, and the excess antireflective paint is wiped off from the paint impregnated member. An antireflection paint application method using a contact member, a holding member for holding the paint impregnated member, a moving means for moving the holding member, and an apparatus comprising the device, wherein the holding member is driven and the paint impregnated Immersing a member in the paint tank; bringing the paint impregnated member into contact with the contact member; moving the paint impregnated member along the application surface of the lens; Characterized in that it comprises.

  According to the present invention, the holding agent holding the paint impregnated member is moved, the paint impregnated member is immersed in the antireflective paint stored in the paint tank, and the antireflective paint is impregnated in the paint impregnated member, The paint impregnated member is brought into contact with the contact member to wipe off the excess antireflection paint, and the paint impregnated member is further moved along the application surface of the lens disposed on the turntable. Thereby, even if it is a lens with the complicated shape of the site | part which applies an anti-reflective coating, an anti-reflective coating can be performed continuously with sufficient precision, and application | coating of an anti-reflective coating can be performed automatically.

  Similarly, the invention according to claim 5 is a step of obtaining predetermined application pattern data from application pattern data of an application surface of the antireflection paint stored in a plurality of types of the lenses to which the antireflection paint is to be applied, Correcting the position of the specific position in the obtained application pattern data.

  According to the present invention, when applying the antireflection paint to the lens, the application pattern on the application surface corresponding to the lens to be applied is read in advance, and the position correction for correcting the application position of the read application pattern is performed. Thereby, when setting many kinds of application patterns corresponding to many kinds of lenses, an actual application pattern can be specified by a simple process, and an antireflection film can be applied by a simple procedure.

  Similarly, the invention according to claim 6 is a step of obtaining predetermined application pattern data from application pattern data of an application surface of the antireflection paint stored in a plurality of types of the lenses to which the antireflection paint is to be applied, Correcting the position of the specific position in the obtained application pattern data.

  According to the present invention, the position of the paint impregnated member is finely adjusted in the vertical direction and the lens diameter direction. For this reason, the deformation | transformation of a coating material impregnation member and the shift | offset | difference of the reflection coating application position resulting from a coating condition can be corrected, and an exact reflection coating can be performed.

  According to the present invention, even when the shape of the part to which the antireflection paint is applied is complicated, the antireflection paint can be continuously applied with high accuracy and the antireflection paint can be automatically applied.

  That is, according to the first and fourth aspects of the invention, the holding agent holding the paint-impregnated member is moved, and the paint-impregnated member is immersed in the antireflection paint stored in the paint tank to prevent reflection. The paint-impregnated member is impregnated with the paint, and then the paint-impregnated member is brought into contact with the contact member to wipe off the excessive antireflection paint, and the paint-impregnated member is further moved along the application surface of the lens disposed on the turntable. Therefore, even if the shape of the part where the antireflection paint is applied is complicated, the antireflection paint can be applied continuously with high accuracy and the antireflection paint can be automatically applied.

  According to the second and fifth aspects of the present invention, since the application pattern of the application surface corresponding to the lens to be applied in advance is read out, and further, the position correction for correcting the application position of the read out application pattern is performed. When setting various types of coating patterns corresponding to the lens, the actual coating pattern can be specified by a simple process, and the antireflection film can be applied by a simple procedure.

  According to the third and sixth aspects of the invention, since the position of the paint impregnated member is finely adjusted in the vertical direction and the lens diameter direction, the position of the antireflective paint applied due to deformation of the paint impregnated member or application conditions. It is possible to correct the deviation and apply the antireflection paint accurately.

BRIEF DESCRIPTION OF THE DRAWINGS The coating apparatus of the anti-reflective coating material which concerns on embodiment of this invention is shown, (a) is a figure which shows the whole structure, (b) is a figure which shows a coating material impregnation member. The micrometer head of the application | coating apparatus of the same anti-reflective coating is shown, (a) is a front view, (b) is a plan view, and (c) is a side view. It is a figure which shows the application pattern of the anti-reflective coating in the application device of the anti-reflective coating. It is a flowchart which shows operation | movement of the coating device of the antireflection coating. It is a schematic diagram which shows operation | movement of the coating device of the antireflection coating.

  An antireflection paint coating apparatus and an antireflection paint coating method according to embodiments for carrying out the present invention will be described.

  Hereinafter, an antireflection paint coating apparatus according to an embodiment of the invention will be described. FIG. 1 shows an antireflection paint coating apparatus according to an embodiment of the present invention. FIG. 1A is a view showing an overall configuration, and FIG. 1B is a view showing a paint-impregnated member. By using the antireflection paint coating apparatus 100 (hereinafter simply referred to as the coating apparatus 100) according to the present embodiment, the antireflection paint is automatically applied to a predetermined surface of the lens 10 that is disposed on the turntable 210 and is driven to rotate. It is something to apply to.

  As shown in FIG. 1A, the coating apparatus 100 includes a paint impregnated member 110, a holding member 120, a micrometer head unit 130, a single-axis robot 140 that is a moving unit, and a controller 150 that is a control unit. A coating pattern database 160 that is a coating pattern data storage unit, an input unit 170, a display unit 180, a contact member 190, a paint tank 200, a turntable 210 that holds and rotates the lens 10, and each member are placed. The base member 220 is provided.

  As shown in FIG. 1B, the paint impregnated member 110 is formed by cutting a sponge, which is a continuous foam made of synthetic resin, into a rectangular parallelepiped, and is appropriately chamfered. The paint impregnated member 110 is impregnated with a liquid antireflection coating. As the antireflection paint, for example, a commercially available optical black water-based paint is used.

  The holding member 120 includes tweezers that hold the paint impregnated member 110 therebetween. The paint impregnated member 110 is deformed as shown in FIG. 1B by being held by the holding member 120. The holding member 120 is attached to the driving arm 141 of the single-axis robot 140 via the micrometer head unit 130.

  FIGS. 2A and 2B show a micrometer head of the antireflection paint coating apparatus, wherein FIG. 2A is a front view, FIG. 2B is a plan view, and FIG. 2C is a side view. The micrometer head unit 130 includes a micrometer head 131 disposed in the X direction and a micrometer head 132 disposed in the Z direction. Each micrometer head 131, 132 is a known one. In the present embodiment, the position of the paint-impregnated member can be finely adjusted by the micrometer head unit 130 in the vertical direction and the diameter direction of the lens. For this reason, the deformation | transformation of the coating material impregnation member 110 and the shift | offset | difference of the anti-reflective coating application position resulting from application | coating conditions can be corrected, and an exact anti-reflective coating can be applied.

  The single-axis robot 140 drives the drive arm 141 in the X direction and the Z direction described above. The single-axis robot 140 is electric, and the drive is controlled by the controller 150.

  The controller 150 is connected to the application pattern database 160, the input unit 170, and the display unit 180. When the application pattern of the lens 10 to which the antireflection paint is applied is selected from the input unit 170, the paint pattern data corresponding to the type of the lens 10 can be acquired from the application pattern database 160.

  The application pattern database 160 stores a plurality of coating pattern data. FIG. 3 is a diagram showing an antireflection paint application pattern stored in an application pattern database in the antireflection paint application apparatus. In this example, the application pattern database 160 stores seven application pattern data from “Type A” to “Type G”.

Here, each application pattern data is as follows.
“Type A”: An anti-reflection coating is applied to the peripheral surfaces of the two optical plate members on which the step portions are not formed and the chamfered portions.
“Type B”: the peripheral surface of the two optical plate members on which the step portions are formed, the anti-reflection coating applied to the step portions and the chamfered portions “Type C”: the concave lens on which the step portions are formed, and the peripheral surface of the optical plate material Application of anti-reflection paint to stepped portion and chamfered portion “Type D”: Application of anti-reflective coating to concave lens and optical plate peripheral surface where stepped portion is not formed, and outer peripheral portion of upper surface of concave lens “Type E”: stepped portion Anti-reflective coating is applied to the peripheral surface of the concave lens and the chamfered portion of the concave lens and the optical plate material in which no step is formed. “Type G”: anti-reflection paint is applied to the peripheral surface of the two laminated lenses on which the step portion is not formed and the chamfered portion. In addition, the application pattern data including a desired application surface in addition to each TYPE is generated and stored. Keep it You can. Further, the coating pattern data of each type can be applied to a lens in which a lower surface and an upper surface other than the bonding surface are concave and convex instead of the optical flat plate.

  One application pattern data close to the actual coating pattern of the lens 10 is selected from the input unit 170, and the position of the acquired application pattern data is corrected by the input unit 170 as a position correction unit. In this position correction, it is possible to correct specific positions of the obtained application pattern data, for example, positions such as a start point, an end point, and a bending point. Thereby, one application pattern data can be applied to lenses having different thicknesses and dimensions. Further, the stop time, the moving speed, and the like at each position of the paint impregnated member 110 can be designated from the input unit 170. Thereby, a coating speed can be changed. With these designations, application pattern data corresponding to a plurality of types of lenses can be generated.

  The input means 170 is composed of a keyboard, a mouse and the like. From the input unit 170, the operator inputs the type of lens to which the antireflection paint is applied, the application pattern data, the position correction, the process start instruction, and the like.

  The display means 180 is composed of a liquid crystal display device or the like. The display unit 180 displays necessary information when inputting a target lens type, specifying application pattern data, and inputting position correction.

  The contact member 190 is a sphere made of, for example, stainless steel, and the paint impregnated member 110 comes into contact with the contact member 190 to wipe off the excessive antireflection paint from the paint impregnated member. Thereby, the excess antireflection paint is removed. The paint tank 200 stores an antireflection paint, and the paint impregnation member 110 is impregnated with the antireflection paint by immersing the paint impregnation member 110. In addition, the contact member 190 is arrange | positioned at the upper part of the coating tank 200, and the anti-reflective coating wiped off is dripped at the coating tank 200.

  The turntable 210 includes a suction stand 211 for sucking and fixing the lens 10 placed thereon, and a centering tool 212 for centering the lens 10, and rotationally drives the lens 10 on the suction stand 211. A suction device is disposed on the suction table 211. Further, the centering tool 212 is a device called a “spot” having a V-shaped cut provided with two slopes on the lens 10 side. A lens is arranged between the two inclined surfaces of the notch and the lens 10 is moved, and the lens 10 is centered and arranged on the suction table 211 of the turntable 210. The suction table 211 and the centering tool 212 are known. In addition, by inputting the lens type from the input unit 170, the operation of the centering tool 212 can be controlled, and the centering can be automatically performed.

  Next, the operation of the coating apparatus 100 will be described. FIG. 4 is a flowchart showing the operation of the antireflection paint coating apparatus, and FIG. 5 is a schematic diagram showing the operation of the antireflection paint application apparatus. In order to apply the antireflection paint to the lens 10 by the coating apparatus 100, first, the lens 10 is set on the turntable 210 (step S1). At this time, the lens 10 centered by the centering tool 212 is sucked and fixed by the suction stand 211.

  Next, the operator selects a coating pattern corresponding to the lens type from the input unit 170 (step S2), and acquires predetermined coating pattern data from the coating pattern database 160 (step S3). Next, the specific position of the coating pattern data, for example, the correction of each position such as the start point, the end point, the bending point, the stop time at each position, the moving speed, and the like are corrected from the input unit 170 so as to match the actual lens 10. (Step S4).

  Then, in response to an instruction from the input unit 170, the single-axis robot 140 is operated to place 110 at the initial position (step S5). Next, the controller 150 lowers the drive arm 141 of the single-axis robot 140 (moves in the Z-direction), and performs an impregnation operation in which the paint impregnation member 110 is immersed in the antireflection paint stored in the paint tank 200 (step). S6). As a result, the paint impregnated member 110 is impregnated with the antireflection paint.

  Next, the controller 150 raises the drive arm 141 of the single-axis robot 140 (moves in the Z + direction), and when the lower surface of the paint-impregnated member 110 comes to contact with the contact member 190, the controller-impregnated member 110 The lens is moved to the lens 10 side (X direction + side), and the lower surface of the paint impregnated member 110 is brought into contact with the contact member 190. Then, the paint impregnation member 110 is reciprocated while being in contact with the contact member 190, and the excess paint is removed (step S7). As a result, excess antireflection paint is removed from the paint impregnated member 110, and dripping of the antireflection paint and excessive application to the lens 10 are prevented.

  Then, the controller 150 lowers the driving arm 141 of the single-axis robot 140 while moving it toward the lens side, and moves the paint impregnated member 110 to the application start position of the lens 10 (step S8). Next, the single-axis robot 140 applies an antireflection paint to the application surface of the lens 10 based on the application pattern data obtained by correcting the drive arm 141 (step S9). When the application is completed, the controller 150 drives the driving arm 141 of the single-axis robot 140 to return the paint impregnated member 110 to the initial position (step S10).

  Thereafter, the operator removes the lens 10 coated with the antireflection coating from the turntable 210, places a new lens 10 on the turntable 210 using the centering tool 212, and repeats the same operation. At this time, when applying to the same lens, steps S2 to S5 can be omitted.

  Further, when the coating impregnation member 110 is deformed or the antireflection coating application position is shifted due to the application conditions, the position of the coating material impregnation member 110 is adjusted by the micrometer heads 131 and 132 of the micrometer head unit 130, The paint impregnated member 110 is finely adjusted up and down and in the lens diameter direction. This makes it possible to accurately apply the antireflection paint.

  As described above, according to the coating apparatus 100 according to the present embodiment, the holding agent holding the paint impregnated member is moved, and the paint impregnated member is immersed in the antireflection paint stored in the paint tank for reflection. The paint impregnated member is impregnated with the paint impregnated member, and then the paint impregnated member is brought into contact with the contact member to wipe off the excess anti-reflective paint, and the paint impregnated member is further moved along the application surface of the lens disposed on the turntable. Therefore, even with a lens having a complicated shape at the site where the antireflection paint is applied, the antireflection paint can be applied continuously with high accuracy, and the antireflection paint can be automatically applied.

  In addition, according to the coating apparatus 100 according to the present embodiment, the application pattern on the application surface corresponding to the lens to be applied in advance is read, and the position correction for correcting the application position of the read application pattern is performed. When setting various types of coating patterns corresponding to the above, an actual coating pattern can be designated by a simple process, and an antireflection film can be coated by a simple procedure.

  Furthermore, according to the coating apparatus 100 according to the present embodiment, since the position of the paint impregnated member is finely adjusted in the vertical direction and the lens diameter direction, the deformation of the paint impregnated member and the shift of the antireflection paint application position due to the application conditions are performed. By correcting the above, it is possible to accurately apply the antireflection coating.

  The lens group applied by the application apparatus according to this embodiment is used in surveying machines such as total stations, theodolites, and scanners, optometry equipment such as slit lamps and surgical microscopes, medical machines, and various industries. Used in various optical systems such as machine vision lenses for inspection, measurement, guidance and recognition, and objective lenses used in security cameras.

10: Lens 100: Coating device 110: Paint impregnated member 120: Holding member 130: Micrometer head 131, 132: Micrometer head 140: Single-axis robot (driving means)
141: Driving arm 150: Controller (control means)
160: Application pattern database (coating pattern data storage unit)
170: Input means (position correction means)
180: Display means 190: Contact member 200: Paint tank 210: Turntable 211: Suction table 212: Centering tool 220: Base member

Claims (6)

A lens to be coated with anti-reflection paint is arranged in a centered manner, and a turntable for rotating the lens,
A paint tank in which the antireflection paint is stored;
A paint-impregnated member immersed in the anti-reflection paint stored in the paint tank and impregnated with the anti-reflection paint;
A contact member in contact with the paint-impregnated member, and the excess anti-reflective coating is wiped away from the paint-impregnated member;
A holding member for holding the paint impregnated member;
Moving means for moving the holding member;
Controlling the moving means to drive the holding member to immerse the paint-impregnated member in the paint tank; to bring the paint-impregnated member into contact with the contact member; An antireflection paint coating apparatus comprising: control means for sequentially executing an operation of moving along the coating surface. Application pattern data storage means for storing a plurality of application pattern data of the application surface of the antireflection paint in the type of the lens to which the antireflection paint is to be applied,
Position correcting means for correcting a specific position in the application pattern data;
The coating apparatus of the anti-reflective coating material of Claim 1 characterized by the above-mentioned.   3. The antireflection paint coating apparatus according to claim 1, wherein the holding member includes a micrometer head capable of finely adjusting the position of the paint impregnating member in the vertical direction and the diameter direction of the lens. A lens to be coated with an antireflection paint is centered and arranged, a rotary base for rotating the lens, a paint tank in which the antireflection paint is stored, and the antireflection paint stored in the paint tank A paint impregnated member immersed in the anti-reflective coating, a contact member in contact with the paint impregnated member, and an excess of the anti-reflective paint wiped off from the paint impregnated member, and the paint impregnated member are held. An antireflection paint application method using a holding member, a moving means for moving the holding member, and an apparatus comprising:
Driving the holding member and immersing the paint impregnated member in the paint tank;
Contacting the paint impregnated member with the contact member;
And a step of moving the paint impregnated member along the application surface of the lens. Obtaining predetermined application pattern data from application pattern data of the application surface of the antireflection paint stored in a plurality of types of the lenses to which the antireflection paint should be applied;
The method for applying an antireflection paint according to claim 4, further comprising: correcting a position of a specific position in the obtained application pattern data. 6. The method of applying an antireflection paint according to claim 4, further comprising a step of finely adjusting the position of the paint impregnated member in the vertical direction and the diameter direction of the lens.