JP3880045B2 - Lens holder for lens sanitizing device and lens holding method of lens sanitizing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens holder for a lens inking device for holding a lens when the end surface of the lens is inked, and a method for holding a lens using the lens holder for the lens inking device. .
[0002]
[Prior art]
In an optical apparatus using a lens, for example, a lens barrel 50 as shown in FIG. 6A, in addition to a normal light ray W1 entering the lens L4, a light ray W2 reflected and incident on the side surface of the lens L4 is It is an unnecessary light beam that causes ghosts and flares and interferes with the function of the original optical device, and it is necessary to prevent this.
[0003]
Therefore, conventionally, as shown in FIG. 6B, the lens L4 is held, and an anti-reflection paint such as a black matte paint is used on the edge surface S12 which is the side surface of the lens L4 using a brush or the like. It was applied. This operation is hereinafter referred to as “inking”.
[0004]
In this case, as shown in FIG. 6B, the lens L4 is held using the lens holder 61 at the time of sanitization. The lens holder 61 includes a tapered tube portion 62, a flat plate portion 63, and a straight tube portion 64. The straight tube portion 64 is provided with an air suction opening 65.
[0005]
When holding the lens L4, a vacuum pump or the like is connected to the straight tube portion 64 to suck air. As a result, negative pressure is generated, and the lens L4 is attracted and held by the lens holder 61. In this state, the straight cylinder portion 64 is driven to rotate, and a brush or the like is brought into contact with the edge surface S12 of the lens L4, whereby the edge surface S12 is painted.
[0006]
[Problems to be solved by the invention]
However, in the above-described conventional lens holder 61, the upper end edge 66 of the tapered cylindrical portion 62 and the lens surface S11 of the lens L4 are in contact with each other in a circular curved line contact state. For this reason, among the surfaces of the lens L4 that has been sanitized, the lens surface S11 that is sucked and held has a problem that a ring-shaped contact mark is formed at the position of the upper edge 66.
[0007]
As shown in FIG. 7A, among the lenses to be sanitized, there is also a lens L5 having chamfered surfaces S14 and S16 in addition to the lens surfaces S13 and S17 and the edge surface S15. In such a lens L5, when not only the edge surface S15 but also the chamfered surfaces S14 and S16 are painted, a brush 80 is used as shown in FIG. Is in contact with the target lens surface (for example, the chamfered surface S14). However, in the case where the lens L5 is held by the lens holder 61 described above, there is a problem that the tip end portion 82 of the brush 80 interferes with the outer side surface of the tapered cylindrical portion 62, and the sanitization operation becomes difficult. there were.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and a problem to be solved by the present invention is to provide a lens for a sanitizing device that is easy to work and does not cause contact marks when the lens is held in the sanitizing operation. It is an object of the present invention to provide a holder and a lens holding method of a lens sanitizing device.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, a lens holder for a lens sanitizing device according to the present invention includes:
It has a curved surface which lower surface is convex downward, holding the curved surface of the lens during the sanitization the lens sanitizing apparatus for performing sanitizing the edge surface is a sanitizing object plane of the lens having at least edge surface A lens holder for a lens inking device,
The upper end is formed into a cup shape with the thinnest wall and has an air suction opening at the bottom of the cup-shaped portion, the upper end opening is formed at least smaller than the curved surface, and the inner surface of the cup-shaped portion is The lens is formed on the inner surface near the upper edge of the cup-shaped portion by suction of air from the air suction opening , which is formed to form a concave curved surface that can accommodate a portion including the central portion of the convex curved surface of the lens. The curved surface is adsorbed and held by surface contact, and the lower end portion of the cup-shaped portion is attached to the tip of a holder support shaft and driven to rotate, so that the sanitization can be performed while rotating the lens. And
[0011]
Moreover, in the lens holder for a lens sanitizer described above, preferably, the concave curved surface is a concave conical surface.
[0012]
Further, in the lens holder for the lens sanitizing device described above, preferably,
The lower surface of the lens is a convex conical surface connected to the outer edge of the convex curved surface of the lens and has a sanitized surface on which the sanitization is performed, and the outer surface of the cup-shaped portion is formed in a convex curved surface shape And
The inclination angle of the outer surface in the vicinity of the upper edge of the cup-shaped part is set to a value smaller than the inclination angle of the sanitized surface serving as the convex conical surface.
[0013]
Moreover, in the lens holder for a lens sanitizing device described above, the portion that holds the lens by surface contact is preferably formed of a synthetic resin material.
[0014]
In addition, the lens holding method of the lens sanitizing apparatus according to the present invention includes:
A lens for holding the lens at the time of sanitization in a lens sanitizing apparatus for sanitizing the edge surface, which is a surface to be sanitized, having a curved surface whose bottom surface is convex downward and having at least an edge surface A lens holding method for a sanitizer,
The upper end is formed into a cup shape with the thinnest wall and has an air suction opening at the bottom of the cup-shaped portion, the upper end opening is formed at least smaller than the curved surface, and the inner surface of the cup-shaped portion is Using a lens holder for a lens inking device formed so as to form a concave curved surface that can accommodate a portion including a central portion of the convex curved surface of the lens, and by suctioning air from the air suction opening, The lens is sucked and held by an inner surface near the upper edge by surface contact, the lower end of the cup-shaped part is attached to the tip of a holder support shaft, and is rotated to perform the sanitization while rotating the lens. Features.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a lens holder for a lens sanitizing device according to an embodiment of the present invention.
[0016]
As shown in FIG. 1A, the lens holder 1 for a lens sanitizing device is made of a synthetic resin material and has a shape in which an air suction opening 5 is formed in the lower portion of the cup-shaped portion 2.
[0017]
The cup-shaped part 2 has a cone-shaped part 3 arranged at the upper part and a straight cylinder part 4 connected to the lower part of the cone-shaped part 3. The cone-shaped portion 3 is a portion having a coaxial frustoconical inner space 9 inside the frustoconical shape. The cone-shaped portion 3 has both an upper portion and a lower portion opened, and the inner diameter of the upper opening is larger than the inner diameter of the lower opening, and is a kind of cylinder.
[0018]
Further, the outer surface 8 of the cone-shaped portion 3 is formed in a conical surface that is convex outward (hereinafter referred to as “convex conical surface”). Further, the inner surface 7 of the cone-shaped portion 3 is formed in a concave conical surface (hereinafter referred to as “concave conical surface”). Then, the inclination angle of the outer surface 8 of the cone-shaped part 3 (an angle with respect to the horizontal plane) is larger than the inclination angle of the inner surface 7 of the cone-shaped part 3 (an angle with respect to the horizontal plane). ing. For this reason, the thickness of the cone-shaped portion 3 decreases from the lower portion toward the upper portion, and the upper end edge 6 of the cone-shaped portion 3 is the thinnest.
[0019]
Moreover, the straight cylinder part 4 is a part which has a coaxial cylindrical internal space inside a cylinder. The internal space of the straight tube portion 4 communicates with the opening at the lower portion of the internal space 9 of the cone-shaped portion 3 described above. The opening at the lower end of the straight tube portion 4 is an air suction opening 5.
[0020]
FIG. 1B is a diagram illustrating a state (a state before suction) in which the lens L1 is placed on the lens holder 1 for the lens sanitizing device when the lens L1 is sanitized. As shown in FIG. 1B, the lens surface S1, which is the lower surface of the lens L1, is a curved surface that protrudes downward, for example, a spherical surface.
[0021]
Further, since the inner surface 7 of the cone-shaped portion 3 of the cup-shaped portion 2 is a concave conical surface as described above, in this state, the portion including the central portion of the convex curved surface of the lens surface S1 of the lens L1 is It is in a state of being accommodated by the inner surface 7.
[0022]
In this case, a vacuum pump or the like (not shown) is connected to the straight tube portion 4 via a pipe or the like (not shown). Next, in the above state, a vacuum pump or the like (not shown) is operated to suck air. As a result, negative pressure is generated, and the lens L1 is attracted and held by the lens holder 1 for the lens sanitizer.
[0023]
FIG. 2 is an enlarged view showing a state in the vicinity of the upper edge 6 when the lens L1 is attracted and held by the lens holder 1 for the lens sanitizer as described above.
[0024]
The cone-shaped part 3 which comprises the upper part of the cup-shaped part 2 is formed with the synthetic resin material. For this reason, it has a certain degree of elasticity. Accordingly, when air suction is performed in the state of FIG. 1B and the internal space 9 of the cone-shaped portion 3 becomes negative pressure, the portion of the inner surface 7 near the upper edge 6, that is, the portion indicated by P1 in FIG. Is elastically deformed so as to approach the surface of the lens L1 under the influence of negative pressure. Thereby, the part of area | region P1 is closely_contact | adhered to the surface S1 of the lens L1 among the inner surfaces 7 of the cone-shaped part 3. FIG.
[0025]
Therefore, the lens L1 is sucked and held by surface contact by the region P1 of the lens holder 1 for the lens sanitizer. For this reason, since a contact area becomes large, the holding force (pressure) which acts on the part hold | maintained becomes smaller than the conventional case hold | maintained in a line contact state. The contact mark is considered to be generated when dirt or the like on the contact portion of the lens holder adheres or is transferred to the lens surface in accordance with the suction holding by the negative pressure. According to the holder 1, since the pressure at the contact portion between the lens holder and the lens is reduced, the contact mark as in the conventional case does not occur.
[0026]
Further, as shown in FIG. 3, the lens holder 1 for the lens sanitizer of the present embodiment is also effective in the case of the lens L2 having the lens surfaces S3 and S7, the edge surface S5, and the chamfered surfaces S4 and S6. is there. In this case, the chamfered surface S4 is a convex conical surface connected to the outer edge of the convex curved surface S3 of the lens L2. Further, the chamfered surface S4 corresponds to the sanitized surface in the claims.
[0027]
In the above-described lens L2, when brushing not only the edge surface S5 but also the chamfered surface S4, the brush 80 is used to bring the application portion 81 serving as the abdomen into contact with the chamfered surface S4.
[0028]
In this case, if the inclination angle θ1 of the outer surface 8 in the vicinity of the upper edge 6 of the cone-shaped portion 3 is set to a value smaller than the inclination angle θ2 of the chamfered surface S4, the brush 80 can be used when holding the lens L2. The tip portion 82 of the lens does not interfere with any part of the lens holder 1 for the lens sanitizing device, and does not interfere with the sanitizing operation.
[0029]
FIG. 4 is a diagram illustrating a configuration example of a lens sanitizing device 100 using the lens holder 1 for the lens sanitizing device. As shown in FIG. 4, in this lens sanitizing device 100, a plurality of holder support shafts 102 are arranged on a turntable 101. A belt 104 is attached to the turntable 101, and the belt 104 is driven by a pulley 103 that is rotated by a rotation drive source (not shown). An electric motor (not shown) or the like is used as the rotation drive source. With such a configuration, the turntable 101 is driven to rotate around the table shaft 105.
[0030]
The holder support shaft 102 is provided with a communication opening 102a, and the communication opening 102a is connected to a vacuum pump or the like (not shown) via a pipe or the like (not shown). Further, the holder support shaft 102 itself is also rotatable, and is rotated by driving the belt 104 described above.
[0031]
With this configuration, when the lens holder 1 for the lens sanitizer is mounted on the tip of the holder support shaft 102 of the lens sanitizer 100, the air suction opening 5 of the lens holder 1 for the lens sanitizer and the holder support shaft The communication opening 102a of 102 communicates.
[0032]
When sanitizing the edge surface S8 of the lens L3, air is sucked by a vacuum pump or the like (not shown). Thereby, negative pressure is generated, and the lens L3 is attracted and held by the lens holder 1 for the lens sanitizer. In this state, when the pulley 103 is driven to rotate, the rotating table 101 rotates, the holder support shafts 102 on the rotating table 101 rotate, and the lenses L3 rotate. In this state, by contacting the edge S8 brush or the like (not shown) of the lens L3, the edge surface S8 can be painted, as indicated by reference numeral B in FIG.
[0033]
FIG. 5 is a diagram showing a configuration example of a lens inking device 200 that can be applied to a lens inking operation manually performed by an operator using the lens holder 1 for the lens inking device or the lens inking device 100 described above. is there. As shown in FIG. 5, in this lens sanitizer 200, a support column 202 is erected on a base 201, and a mounting bracket 203 is attached to the support column 202. In the mounting bracket 203, a clamp portion 203b is connected to one end of a beam-shaped or rod-shaped bracket main body portion 203a, and the clamp portion 203b can be slid to the support column 202 by using a tightening force of a spring or a fastening screw. It is supposed to be fixed to.
[0034]
Further, an annular tank holding portion 203c is connected to the other end side of the fitting main body portion 203a of the attachment fitting 203, and the paint tank 204 is held by the tank holding portion 203c. The paint tank 204 has a substantially cylindrical tank main body 204a, in which a liquid black paint (black) 300 can be stored. A lower portion of the tank body 204a is a funnel portion 204b having a gradually decreasing inner diameter, and a discharge port 204c is connected to a lower end of the funnel portion 204b.
[0035]
One end of the flexible pipe 205 is fitted into the discharge port 204c. The flexible pipe 205 is a member made of a rubber material or the like and formed in a tubular shape. The rubber-based material includes natural rubber, synthetic rubber and the like. Multiple ends of the flexible pipe 205 are fitted into one end of the gripping shaft 206 (upper end in FIG. 5). The gripping shaft 206 is a substantially cylindrical member made of a synthetic resin material, a metal material, or the like, and the space inside the gripping shaft 206 is in communication with the internal space of the flexible pipe 205.
[0036]
A brush-like part 207 is connected to the other end (lower end in FIG. 5) of the gripping shaft 206. The brush-like portion 207 is made of a material that is easily impregnated with a liquid such as felt or sponge, and has a substantially spindle shape like a brush.
[0037]
With such a configuration, a lens sanitizer operator (not shown) grips the gripping shaft 206 of the lens sanitizer 200 with a hand and a finger, and slides the clamp portion 203b in either the vertical vertical direction. By adjusting the height position (height difference) between the paint tank 204 and the brush portion 207, the amount of the black paint 300 oozing out from the brush portion 207 is adjusted. That is, if the height position of the brush-like portion 207 is kept lower than the liquid level position of the paint 300 in the paint tank 204, the pressure in the paint tank 204 is caused by the pressure accompanying the height difference of the paint 300 that is liquid. The black paint 300 reaches the brush-like part 207 through the internal space of the flexible pipe 205 and the gripping shaft 206, and the black paint 300 oozes out of the brush-like part 207. If the height position of the brush-like part 207 is further lowered, the degree of the black paint 300 that the black paint 300 exudes from the brush-like part 207 (exudation amount, speed thereof, etc.) increases. On the contrary, if the height position of the brush part 207 is made higher than the above position, the degree of the black paint 300 that the black paint 300 exudes from the brush part 207 (the amount of exudation, its speed, etc.) decreases.
[0038]
The lens sanitizing operator grips the gripping shaft 206 and appropriately adjusts the height position of the paint tank 204 or the brush-like portion 207 or both to appropriately set the height difference between the two. Adjust the amount and speed of the black paint 300 to be put out, and bring the side part of the brush-like part 207 into contact with the edge (not shown) of the lens (not shown) held by the lens holder 1 described above, Thereby, the lens edge surface can be painted.
[0039]
In addition, this invention is not limited to the said embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.
[0040]
For example, in the above-described embodiment, the lens held by the lens holder for the lens sanitizer is described by taking the example of the single convex lens L1 shown in FIG. 1B and the biconvex lens L2 having a chamfered surface shown in FIG. However, the present invention is not limited to this, and a lens having another configuration, for example, a biconvex lens having no chamfered surface, a lens having one convex surface and the other surface concave may be used. In short, any lens may be used as long as at least one surface is convex.
[0041]
In the above embodiment, the example has been described in which the inner surface (for example, 7) of the cup-shaped portion of the lens holder for the lens sanitizer is formed as a concave conical surface, but the present invention is not limited to this. Any concave surface (concave surface) that can accommodate an inner surface of another configuration, for example, a portion including the central portion of the convex curved surface of the lens and can come into surface contact with the vicinity of the outer edge of the lower surface of the lens A concave curved surface or a concave spherical surface may be used.
[0042]
In the above embodiment, the example in which the outer surface (for example, 8) of the cup-shaped portion of the lens holder for the lens sanitizer is formed as a convex conical surface has been described, but the present invention is not limited to this. The outer surface of another structure, for example, a spherical surface convex outward may be used.
[0043]
In the above embodiment, the lens holder for the lens sanitizer is formed into a cup shape with the thinnest upper end as shown in FIG. 1, and in the vicinity of the upper edge of the cup-like portion as shown in FIG. Although the example in which the inclination angle of the outer surface of the lens is set to a value smaller than the inclination angle of the sanitized surface that is a convex conical surface has been described, the present invention is not limited to this, and the lens sanitization of other configurations is performed. The lens holder for an apparatus, for example, as shown in FIG. 1, may have a configuration that is simply molded into a cup shape with the thinnest upper end. Even with such a configuration, the effect of the present invention that no contact mark is generated can be achieved.
[0044]
【The invention's effect】
As described above, according to the present invention, since the upper end is formed into a cup shape with the thinnest wall and is configured to have an air suction opening at the lower part of the cup-shaped portion, By sucking air, the lens is sucked and held on the inner surface near the upper edge of the cup-shaped part by surface contact, and the vicinity of the lower end of the cup-shaped part is mounted on the tip of the holder support shaft and driven to rotate. It has the advantage that it can be painted and does not cause contact marks.
[0045]
In addition, in the lens holder for a lens sanitizing device, the inclination angle of the outer surface near the upper edge of the cup-shaped portion is set to a value smaller than the inclination angle of the sanitizing surface that is a convex conical surface. There is also an advantage that the ink can be easily painted without interfering with the brush at the time of painting.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a lens holder for a lens sanitizing device according to an embodiment of the present invention.
FIG. 2 is a first diagram showing the operation of the lens holder for the lens sanitizing device shown in FIG. 1;
FIG. 3 is a second diagram showing the operation of the lens holder for the lens sanitizing device shown in FIG. 1;
4 is a diagram illustrating a configuration example of a lens sanitizing device using the lens holder for the lens sanitizing device illustrated in FIG. 1; FIG.
FIG. 5 is a diagram illustrating a configuration example of a sanitizer applicable to a lens sanitizing operation performed using the lens holder for the lens sanitizing apparatus illustrated in FIG. 1;
FIG. 6 is a first diagram illustrating sanitization in a conventional lens.
FIG. 7 is a second diagram illustrating sanitization in a conventional lens.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lens holder for lens sanitizer 2 Cup-shaped part 3 Cone-shaped part 4 Straight cylinder part 5 Air suction opening 6 Upper edge 7 Inner surface 8 Outer surface 9 Internal space 50 Lens barrel 61 Lens holder 62 Tapered cylinder part 63 Flat plate part 64 Straight tube portion 65 Air suction opening 66 Upper edge 80 Brush 81 Application portion 82 Front end portion 100 Lens inking device 101 Rotating table 102 Holder support shaft 102a Communication opening 103 Pulley 104 Belt 105 Spindle 200 Lens inking device 201 Base 202 Post 203 Mounting bracket 203a Bracket body 203b Clamp 203c Tank holder 204 Paint tank 204a Tank body 204b Funnel 204c Discharge port 205 Flexible pipe 206 Grasp shaft 207 Brush part 300 Black paint B Blackened surface L1 to L5 Lens P1 surface contact area S1 lens surface S2 edge surface S3 Chamfered surface S4 Chamfered surface S5 Chamfered surface S6 Chamfered surface S7 Lens surface S8 Edged surface S11 Lens surface S12 Edged surface S13 Lens surface S14 Chamfered surface S15 Edged surface S16 Chamfered surface S17 Lens surface W1, W2 Ray θ1 Cup-shaped outer surface upper edge Near inclination angle θ2 Inclination angle of chamfer

Claims (5)

It has a curved surface which lower surface is convex downward, holding the curved surface of the lens during the sanitization the lens sanitizing apparatus for performing sanitizing the edge surface is a sanitizing object plane of the lens having at least edge surface A lens holder for a lens inking device,
The upper end is formed into a cup shape with the thinnest wall and has an air suction opening at the bottom of the cup-shaped portion, the upper end opening is formed at least smaller than the curved surface, and the inner surface of the cup-shaped portion is The lens is formed on the inner surface near the upper edge of the cup-shaped portion by suction of air from the air suction opening , which is formed to form a concave curved surface that can accommodate a portion including the central portion of the convex curved surface of the lens. The curved surface is adsorbed and held by surface contact, and the lower end portion of the cup-shaped portion is attached to the tip of a holder support shaft and driven to rotate, so that the sanitization can be performed while rotating the lens. Lens holder for the lens sanitizer. The lens holder for a lens sanitizer according to claim 1,
The lens holder for a lens sanitizer , wherein the concave curved surface is a concave conical surface . The lens holder for a lens sanitizer according to claim 1,
The lower surface of the lens is a convex conical surface connected to the outer edge of the convex curved surface of the lens and has a sanitized surface on which the sanitization is performed, and the outer surface of the cup-shaped portion is formed in a convex curved surface shape And
The inclination angle of the outer surface near the upper edge of the cup-shaped portion, the lens sanitizing device for the lens holder, wherein Rukoto is also set to a value smaller than the inclination angle of sanitizing surfaces serving as the convex conical surface. The lens holder for a lens sanitizer according to claim 1,
Portion for attracting and holding said lens by surface contact, the lens sanitizing device for the lens holder, characterized that you have been formed of a synthetic resin material. A lens for holding the lens at the time of sanitization in a lens sanitizing apparatus for sanitizing the edge surface, which is a surface to be sanitized, having a curved surface whose bottom surface is convex downward and having at least an edge surface A lens holding method for a sanitizer,
The upper end is formed into a cup shape with the thinnest wall and has an air suction opening at the bottom of the cup-shaped portion, the upper end opening is formed at least smaller than the curved surface, and the inner surface of the cup-shaped portion is Using a lens holder for a lens inking device formed so as to form a concave curved surface that can accommodate a portion including a central portion of the convex curved surface of the lens, and by suctioning air from the air suction opening, The lens is sucked and held on the inner surface near the upper edge by surface contact, the lower end of the cup-shaped portion is attached to the tip of a holder support shaft, and is rotated, and the ink is applied while rotating the lens.
A lens holding method for a lens sanitizer .

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