JP2001192085A - Optical element cleaning basket - Google Patents

Abstract

(57) [Problem] To produce a lens by reliably preventing the optical element from deviating or falling off from an optical element cleaning basket storing a large number of optical elements when cleaning an optical element such as a lens. Provided is an optical element cleaning basket capable of improving the performance. SOLUTION: A drop-off prevention cover 4 in which a mesh body 4b is stretched on an upper surface of a cover frame 4a is provided on a cleaning basket main body 2 having a guide body 3 in which a large number of concave portions for holding a lens L are formed at predetermined intervals. Is placed and fixed, so that the mesh body 4b of the fall-prevention lid 4 abuts on the upper surface of the outer periphery of the multiple lenses L accommodated in the basket body 2 for cleaning, or the lens L
The lens L is held very close to the upper surface of the outer periphery of the lens, and the lens L is securely held in the cleaning basket 1, and when the lens is cleaned, the lens moves in the cleaning basket or completely falls off the cleaning basket. Can be reliably prevented, and the occurrence of lens defects and a decrease in the operating rate of the cleaning device are suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical element cleaning basket for accommodating a large number of optical elements when cleaning optical elements such as a camera, a video camera, a pickup lens, and a lens used in semiconductor equipment. is there.

[0002]

2. Description of the Related Art In an optical element such as a camera, a video camera, a pickup lens or a lens used in a semiconductor device (hereinafter, also simply referred to as a lens), the lens is mirror-finished in order to perform a thin film treatment (coating) on the lens surface. After polishing, or after centering, in which the outer periphery of the lens is ground to match the optical axis of the lens connecting the centers of curvature of both surfaces after the polishing, the dirt on the lens surface is removed and cleaned. Cleaning has been performed. Further, before joining the lenses together and before assembling the lens into the lens barrel, it is essential to clean the lens in order to remove and clean the surface of the lens. As a method for cleaning such a lens, a cleaning device provided with a drying function is used, and the lens is sequentially transported to a plurality of cleaning liquid tanks, and the lens immersed in each cleaning liquid tank is subjected to mechanical cavitation by ultrasonic waves. A method is generally known in which a lens is cleaned in a cleaning liquid tank and finally dried by a synergistic effect of the action and the chemical action of the dissolution or emulsification action of the cleaning liquid.

In the lens cleaning step, a lens cleaning basket capable of accommodating a large number of lenses as shown in FIGS. 8A to 8C is generally used. The lens cleaning basket 101 includes a rectangular frame 102 and a frame 1.
02, a plurality of guide bodies 1 fixed to opposite side walls
The guide body 103 is formed as shown in FIG.
As shown in a partially enlarged view, a guide 103 in which a plurality of concave portions for holding the lower surface of the lens L are formed at predetermined intervals.
a and guides 103b, a plurality of which are formed at predetermined intervals to hold opposing side surfaces of the lens L from both sides.
A plurality of lenses L are respectively held by a plurality of concave portions formed of three guides 103a, 103b, and 103c at predetermined intervals in one row, and a plurality of such rows are arranged in parallel to form a large number of lenses. L can be stored. A large number of lenses L accommodated in such a lens cleaning basket 101 are subjected to ultrasonic cleaning in each of the cleaning liquid tanks, conveyed between the cleaning liquid tanks, and finally, the lenses are dried and finished. .

[0004]

Incidentally, as for optical elements such as lenses, in recent years, products related to optical elements have been reduced in size, and the required lens shape has been shifted to small-diameter lenses. Under such circumstances, when using a conventional lens cleaning basket capable of accommodating a large number of lenses as described above when cleaning the lens, a small-diameter lens housed in the lens cleaning basket or a lens having a relatively small specific gravity is used. In the case of a lens or a lens whose outer peripheral portion (edge) is relatively wide, the buoyancy of the lens or the surface of the cleaning liquid when approaching the cleaning liquid surface of the cleaning liquid tank and immersing in the liquid or removing the lens from the liquid. The lens housed in the lens cleaning basket deviates from a predetermined position in the lens cleaning basket due to tension or the resistance of the cleaning liquid, and falls into the cage in a state where the lens easily falls off, or It may fall off from the washing basket and fall into the washing liquid tank. Further, the lens (especially, the lens which is falling down in the cleaning basket during the cleaning) is moved into the cleaning liquid tank due to vibration or impact during transportation between the cleaning liquid tanks. Problems such as dropping out occurred.

That is, it is necessary to stop the cleaning device by causing the lens to drop due to the lens falling off during the cleaning and to cause the lens to fall off. Although it is conceivable to slow down the operation, the operation rate of the cleaning device is reduced, and this has a negative effect on the productivity of the lens.

Accordingly, the present invention has been made in view of the above-mentioned unresolved problems of the prior art, and has been made in consideration of the above-described problems, and has been made in consideration of the above-described problems. An object of the present invention is to provide an optical element cleaning basket capable of improving the productivity of a lens by reliably preventing the optical element from deviating or falling off from the basket.

[0007]

In order to achieve the above object, an optical element cleaning basket of the present invention is an optical element cleaning basket for accommodating a large number of optical elements in parallel when cleaning the optical elements. The optical element cleaning basket is characterized by comprising a cleaning basket main body for accommodating a large number of optical elements in parallel at a predetermined interval, and a cap for preventing falling off placed on the cleaning basket main body. I do.

In the basket for cleaning an optical element according to the present invention, when the drop-off prevention lid is placed on the cleaning basket main body, a part of the fall-off prevention lid is accommodated in the cleaning basket main body. It is preferable that the optical element is formed so as to be always in contact with at least a part of each optical element or to be in a state very close to a part of each optical element.

In the basket for cleaning an optical element according to the present invention, it is preferable that the fall-prevention lid is detachably fixed to the basket body for cleaning, and the upper surface of the fall-prevention lid is formed of a mesh or a predetermined mesh. It is preferable that it is formed of a plurality of rods arranged at intervals.

[0010]

According to the optical element cleaning basket of the present invention, the dropping prevention lid is mounted on the cleaning basket body accommodating a large number of lenses by using the dropping prevention lid for the lens cleaning basket to prevent dropping. By bringing a part of the mesh of the lid or the like into contact with at least a part of the outer peripheral part of each lens or in a state very close to the outer peripheral part of each lens, the lens housed in the lens cleaning basket is Behavior can be regulated, and all lenses can be held reliably. Thereby, when cleaning the lens, it is possible to eliminate the problem that the lens deviates from a predetermined position in the cleaning basket and easily falls off or completely drops off from the cleaning basket. In addition, it is possible to suppress the occurrence of lens defects and the decrease in the operation rate of the cleaning device, and to improve the productivity.

[0011]

Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 shows a lens cleaning basket according to Embodiment 1 of the present invention. FIG. 1 (a) is a schematic view of a lens cleaning basket in which a part of a fall prevention cover is cut away. FIG. 4B is a top view, FIG. 4B is a schematic side view of the lens cleaning basket shown partially broken away, and FIG. 4C is a lens cleaning basket in a state where a fall prevention lid is removed from the cleaning basket body. FIG. 2 is a schematic perspective view showing a basket for use, and FIG. 2 is a partially enlarged view of a guide body of a main body for washing basket according to the first embodiment of the present invention.

The lens cleaning basket 1 in this embodiment is
The cleaning basket main body 2 is composed of a cleaning basket main body 2 and a fall prevention cover 4, and the cleaning basket main body 2 has a rectangular frame 2a and a frame 2a substantially similar to the above-described conventional lens cleaning basket (FIG. 8). As shown in FIG. 2, the guide body 3 is formed by forming a plurality of concave portions for holding the lower surface of the lens L at predetermined intervals and forming a guide 3a. And a guide 3b formed with a plurality of recesses at predetermined intervals for holding opposing side surfaces of the lens L from both sides,
A plurality of lenses L are respectively held by a plurality of concave portions formed of three guides 3a, 3b, and 3c at predetermined intervals in one row, and a plurality of the rows are arranged in parallel to form a large number of lenses L. It is configured to be able to be stored. Further, hook hooks 8 for fixing the fall-preventing lid 4 are provided at the outer central portions of the opposing side walls of the rectangular frame 2a. Note that the lens L in this embodiment is a concave meniscus lens having a diameter of 14.5, and the lens cleaning basket 1 includes three guides 3a, 3b,
The guide body 3 composed of 3c accommodates 15 lenses L in one row, is arranged in seven rows, and is formed so as to accommodate 105 lenses L.

The drop-off prevention lid 4 is a rectangular lid frame 4 provided in a size capable of covering the basket 2 for cleaning.
a and a mesh 4b stretched over the upper surface of the lid frame 4a with an air gap to the extent that the lens L does not come off.
Hooks 7 are rotatably attached to the center portions of the opposite side walls a. When the fall prevention lid 4 is put on the basket body 2 for cleaning, the hooks 7 are attached to the basket body 2 for cleaning. It is provided so as to be engaged with hook hooks 8 attached to the outer central portions of the opposing side walls, so that the cap 4 can be fixed to the basket body 2 for cleaning.

Therefore, when cleaning the lens L,
Guide body 3 of basket body 2 for cleaning 105 lenses L
(3a, 3b, 3c) After locking and storing in the recesses formed in (3a, 3b, 3c), the fall-preventing lid 4 is put on the basket body 2 for washing, and both hooks 7 are formed on both side walls of the basket body 2 for washing. The hooks 8 are engaged with the hook hooks 8, respectively, and the fall prevention cover 4 is fixed to the basket body 2 for cleaning. When the fall prevention cover 4 is fixed to the basket body 2 for cleaning, the mesh 4b of the fall prevention cover 4
Each lens L comes into contact with the upper surface in the figure of the outer peripheral portion of the lens L or comes very close to the upper surface in the diagram of the outer peripheral portion of the lens L. Between the guide bodies 3 (3a, 3b, 3c)
The 105 lenses L are securely held in the cleaning basket 1, respectively, and the fall-off prevention lid 4 has the effect of regulating the behavior of the lenses L.

Here, an outline of lens processing will be described. Lens processing is roughly divided into three steps: mechanical processing (polishing, centering), processing (coating, joining), and assembling step. In each of these steps, the number of times of cleaning per lens is 3 to 5 times, and the cleaning of the lens has an important role of removing dirt on the lens between each step.

Next, an embodiment of cleaning a lens using an ultrasonic cleaning apparatus will be described with reference to FIG. As described above, the hook-fixing type lens cleaning basket 1 containing a large number of concave meniscus lenses L having a diameter of 14.5 is placed on the entrance belt 51 of the ultrasonic cleaning device 50, and the entrance belt 51 moves in the direction of arrow A. As a result, the lens cleaning basket 1 is carried into the entrance 52 of the ultrasonic cleaning device 50. Ultrasonic cleaning device 5
The lens cleaning basket 1 carried into the entrance 52 of the lens 0
It is transported along the arrow B above the first cleaning liquid tank 53 by a hanger or the like (not shown). When transported by the hanger or the like, the lens L in the lens cleaning basket 1 receives a slight amount of shaking or vibration from the hanger or the like, but is reliably held by the effect of regulating the behavior of the lens of the fall-off prevention cover 4. The lens L does not move in the lens cleaning basket 1.

Next, the lens cleaning basket 1 conveyed above the first cleaning liquid tank 53 is lowered into the first cleaning liquid tank 53 along an arrow C by a hanger or the like (not shown).
It is immersed in the first cleaning liquid 53a. At this time, the lens L in the lens cleaning basket 1 is placed on the surface 53 of the first cleaning liquid 53a.
b, or when immersed in the first cleaning liquid 53a, the lens L tends to float due to the surface tension of the cleaning liquid and the buoyancy of the lens, but the lens L is securely held by the fall-off prevention lid 4. As a result, it is securely held in the lens cleaning basket 1 and does not fall off from the lens cleaning basket 1.

When the lens cleaning basket 1 is immersed in the first cleaning liquid 53a, the lens L is cleaned by a synergistic effect of the mechanical action of cavitation by ultrasonic waves and the chemical action of the cleaning liquid. When the cleaning in the first cleaning liquid tank 53 is completed, the lens cleaning basket 1 is raised along the arrow D by a hanger or the like (not shown). Even when the lens L is raised, the lens L tends to move due to liquid resistance or the like at the time of lifting, but the lens L is securely held by the fall prevention cover 4 and firmly held at a predetermined position in the lens cleaning basket 1. ing.

The first cleaning liquid 5 in the first cleaning liquid tank 53
Similarly, the lens L is cleaned in the second cleaning liquid tank 54 to the third cleaning liquid tank 55...
After that, after the lens L is dried by the drying tank 56,
The lens cleaning basket 1 is conveyed along the arrow E, transferred onto the outlet belt 57, moved along the arrow F by the outlet belt 57, and carried out of the ultrasonic cleaning device 50.

As described above, even if the hook-fixed lens cleaning basket 1 accommodating 105 concave meniscus lenses L having a diameter of 14.5 is carried into the ultrasonic cleaning device 50 and subjected to ultrasonic cleaning, the lens is cleaned. Since the lens L is securely held in the lens cleaning basket 1 by the effect of restricting the behavior of the lens of the fall prevention cover 4, the lens L can be washed without falling or falling. Even if the shape and the number of the lenses to be accommodated are different, by making the outer dimensions of the (the rectangular frame 2a) of the washing basket body 2 common, the above-mentioned fall prevention cover 4 can be used to clean the lens. It can be used in common for all lens cleaning baskets where the lens is likely to fall off.

(Embodiment 2) Next, a lens cleaning basket according to Embodiment 2 of the present invention will be described with reference to FIG. 4A and 4B show a lens cleaning basket according to a second embodiment of the present invention. FIG. 4A is a schematic top view of the lens cleaning basket showing a part of a fall-off prevention lid cut away. () Is a schematic side view of a lens cleaning basket partially broken away, and (c) is a schematic perspective view showing the lens cleaning basket in a state where a fall prevention lid is removed from a cleaning basket main body. FIG.

The lens cleaning basket 11 in the present embodiment.
Is composed of a cleaning basket main body 12 and a fall-preventing lid 14, and the cleaning basket main body 12 has a rectangular frame 12a and a frame 12 similarly to the above-described cleaning basket main body 2 of the first embodiment.
a plurality of guide bodies 13 fixed to opposite side walls
The guide body 13 has a plurality of recesses for holding the lower surface of the lens L at predetermined intervals.
Guides 13b and 1c each having a plurality of concave portions formed at predetermined intervals for holding opposing side surfaces of the lens 3a and the lens L from both sides.
3c consisting of three guides 13a, 13b, 13c,
A plurality of lenses L are respectively held by concave portions formed in a row at predetermined intervals, and a plurality of the rows are arranged in parallel to accommodate a large number of lenses L. Further, fixing screws 18 for fixing the falling-off prevention lid 14 are detachably provided at the outer central portions of the opposing side walls of the rectangular frame 12a. In the basket 11 for lens cleaning of the present embodiment, 12 biconcave lenses L having a diameter of Φ20 are formed so as to be held by 12 guide bodies in one row, and five rows are arranged in parallel to form 60 lenses L. It is configured to be accommodated.

The drop-off prevention lid 14 is provided with a rectangular lid frame 14a provided in a size that can be put on the basket body 12 for cleaning, and a gap on the upper surface of the lid frame 14a with a gap for preventing the lens L from coming off. A slit groove 17 is formed at the center of each of the opposing side walls of the lid frame 14a, and these slit grooves 17 are used for cleaning the fall prevention cover 14 for cleaning. When it is put on the basket body 12, it engages with and engages with the fixing screws 18 attached to the outer central portions of the opposite side walls of the basket body for cleaning 12, and tightens the fixing screws 18.
The drop-off prevention lid 14 is provided so as to be fixed to the basket body 12 for cleaning.

Therefore, when cleaning the biconcave lens L, after the 60 biconcave lenses L are stored in the basket body 12 for cleaning, the slit grooves 17 of the cap 14 are fixed to the fixing screws 18 of the basket body 12 for cleaning. The falling-off prevention lid 14 is put on the cleaning basket main body 12 while conforming to the above, and the fixing screw 18 is tightened to fix the falling-off prevention lid 14 to the cleaning basket main body 12. When the cap 14 is fixed to the basket body 12, the mesh 14b of the cap 14 abuts on the upper surface of the outer periphery of the lens L in the drawing or the upper surface of the outer periphery of the lens L in the drawing. The lenses L are brought very close to each other, and each lens L is held between the mesh body 14b of the fall prevention cover 14 and the guide body 13 (13a, 13b, 13c) of the basket body 12 for cleaning.
A large number of lenses L are securely held in the basket 11 for cleaning, and the cap 14 prevents the lens L from behaving.

The cleaning of the lens L using the screw-fixing lens cleaning basket 11 of the present embodiment can be performed in the same manner as in the above-described first embodiment, and stores 60 biconcave lenses L of Φ20. Also in the ultrasonic cleaning of the lens cleaning basket 11, the lens L is kept in the lens cleaning basket 1 by the effect of restricting the behavior of the lens L of the falling-off prevention lid 14.
Since the lens is securely held in the lens 1, the lens can be cleaned without causing the lens to fall off or fall in the cleaning step.

Embodiment 3 Next, a lens cleaning basket according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 5 is a schematic perspective view showing a lens cleaning basket according to a third embodiment of the present invention. FIG. 5A is a schematic perspective view showing the lens cleaning basket in a state where a fall prevention cover is removed from a cleaning basket main body. FIG. 3B is a schematic perspective view of the lens cleaning basket showing a state in which the fall prevention cover is put on the cleaning basket main body.

The lens cleaning basket 21 in the present embodiment.
Is composed of a basket body for cleaning 22 and a drop-off prevention lid 24. The basket body for cleaning 22 is provided on the opposite side walls of the rectangular frame 22a and the frame 22a in the same manner as in the first embodiment. And a plurality of fixed guide bodies 23,
It is configured to accommodate a large number of lenses L. Similarly to the first embodiment, the drop-off prevention lid 24 has a rectangular lid frame 24a provided in a size capable of covering the cleaning basket main body 22, and a lens L on the upper surface of the lid frame 24a.
24b that is stretched with a gap that does not allow
It is composed of

In this embodiment, a hinge 29 which can be detachably attached to the hook 27 and the hook hook 28 is used as a means for fixing the basket body 22 for cleaning and the cap 24 for preventing falling off. Hinge 29
A hinge for detachably attaching at least one detachable hinge to one side wall of one side of the frame body 22a of the basket body for cleaning 22 and the corresponding side wall of one side of the lid frame body 24a of the drop-preventing lid 24 (FIG. 5)
Shows an example using two hinges. ), A hook 27 that is removably attached so as to be rotatable and that is rotatable on the lid frame 24a of the fall-off prevention lid 24 is provided at the center of the side wall on the side opposite to the side wall on which the hinge 29 is attached. A hook hook 28 is attached to the frame 22a of the basket body 22 for cleaning.

With the above configuration,
Guide lens 23 of basket body 22 for cleaning
After being locked and stored in the recesses formed in the cleaning cage body 22, the fall prevention cover 24 is
To the washing basket body 22 by rotating the fall-preventing cover 24 about the hinge 29, and then hooking the hook 27 of the fall-preventing cover 24 to the washing basket body 22. , And the cap 24 is fixed to the basket body 22 for cleaning. When the cap 24 is fixed to the basket body 22 in this way, the mesh 24b of the cap 24 comes into contact with the upper surface of the outer periphery of the lens L, or comes very close to the upper surface of the outer periphery of the lens L. The lens L is held between the mesh body 24b of the cap 24 and the guide body 23 of the basket 22 for cleaning, and the lens L of the cap 24 prevents the lens L from moving. Are securely held in the basket 21 for cleaning. The cleaning of the lens L can be performed in the same manner as in the above-described first and second embodiments. Since the lens is securely held in the lens cleaning basket 21 by the effect of regulating the behavior of L, the lens can be cleaned without dropping or falling off in the cleaning process.

Although the hinge 29 in this embodiment is detachable, the fall-off prevention lid 24 can be detached from the cleaning basket body 22 as needed, but using a hinge that is not detachable. Cap for preventing falling off 24
It is needless to say that the can be opened and closed around the hinge.

(Embodiment 4) Next, a lens cleaning basket according to Embodiment 4 of the present invention will be described with reference to FIG. FIG. 6 is a perspective view of the lens cleaning basket of the present embodiment.

The lens cleaning basket of this embodiment is a cord-fixing type lens cleaning basket 31 in which a fall-off prevention cover 34 is put on the cleaning basket main body 32 and both are tied and fixed with a cord 37 such as a string. And the basket 31 for lens cleaning is
As in the first to third embodiments, the cleaning basket main body 32 and the falling-off prevention lid 34 are provided.
Is composed of a rectangular frame 32a and a plurality of guides 33 fixed to opposite side walls of the frame 32a,
The guide body 33 has three guides: a guide in which a plurality of concave portions for holding the lower surface of the lens L are formed at a predetermined interval, and a guide in which a plurality of concave portions for holding opposing side surfaces of the lens L from both sides are formed at a predetermined interval. The plurality of lenses L
And a plurality of the rows are arranged in parallel to accommodate a large number of lenses L. The fall-off prevention lid 34 is provided with a rectangular lid frame 34a provided to have a size that can be put on the basket body 32 for cleaning and a gap on the upper surface of the lid frame 34a with a gap for preventing the lens L from coming off. And a mesh body 34b. In the present embodiment, similarly to the second embodiment described above, 12 biconcave lenses L of Φ20 are held in each row, and 5 rows are arranged in parallel to accommodate 60 biconcave lenses L. Have been.

After storing the 60 biconcave lenses L in the cleaning basket main body 32, the falling-off prevention lid 34 is attached to the cleaning basket main body 3
2 and the basket body 32 for cleaning and the cap 3
4 is tightly bound with a cord 37 or the like. Thereby, the falling-off prevention lid 34 can be fixed to the basket body 32 for cleaning.

When the basket 34 and the cap 34 are fixed to the basket 32 by the cord 37, the mesh 34b of the cap 34 is removed. Each lens L comes into contact with the upper surface of the outer peripheral portion of the lens L or comes very close to the upper surface of the outer peripheral portion of the lens L.
4b and the guide body 33 of the basket body 32 for cleaning, all 60 lenses L are securely held in the basket 31 for lens cleaning by the effect of regulating the behavior of the lens L of the cap 34 for preventing falling off. Is done.

The cleaning of the biconcave lens L of Φ20 performed by using the cord-fixing type lens cleaning basket 31 of the present embodiment is as follows.
In the ultrasonic cleaning of the lens cleaning basket 31 containing 60 lenses L, the effect of controlling the behavior of the lens L of the fall-off prevention cover 34 can be achieved in the same manner as in the first to third embodiments. L is a lens cleaning basket 31
Since the lens is securely held inside, the lens can be cleaned without causing the lens to drop or fall in the cleaning step.

(Embodiment 5) Next, a lens cleaning basket according to Embodiment 5 of the present invention will be described with reference to FIG. FIG. 7 shows a lens cleaning basket according to a fifth embodiment of the present invention. FIG. 7 (a) is a schematic top view of the lens cleaning basket showing a part of the fall-off prevention lid cut away. () Is a schematic side view of the lens cleaning basket shown partially broken away, and (c) is a schematic perspective view showing the lens cleaning basket in a state where a fall prevention cover is placed on the cleaning basket main body. FIG.

In each of the above-described embodiments, the fall prevention cover is fixed to the lens cleaning basket using a hook or a fixing screw to prevent the lens from falling off at the time of lens cleaning. Is different from those of the above-described embodiments in that it is a lens cleaning basket which can prevent the lens from dropping off when cleaning the lens without fixing the falling-off prevention lid to the lens cleaning basket specially. ing.

The lens cleaning basket 41 of the present embodiment comprises a cleaning basket main body 42 and a fall prevention cover 44. The cleaning basket main body 42 is similar to the cleaning basket main body 2 of the first embodiment. And a plurality of guides 43 fixed to opposing side walls of the frame 42a. The guide 43 includes a plurality of recesses for holding the lower surface of the lens L at predetermined intervals. Guides 43b and 43c each having a plurality of recesses formed at predetermined intervals for holding opposing side surfaces of the formed guide 43a and the lens L from both sides.
The plurality of lenses L are formed by concave portions formed of book guides 43a, 43b, and 43c and formed at predetermined intervals in one row.
And a plurality of the rows are arranged in parallel to accommodate a large number of lenses L. As in the first embodiment described above, 15 concave meniscus lenses L having a diameter of 14.5 are accommodated in one row. These are arranged in seven rows to accommodate 105 pieces.

The drop-off preventing covers 44 are arranged at predetermined intervals on opposing side walls of the rectangular cover frame 44a and the cover frame 44a provided in a size that can be put on the cleaning basket main body 42. And a plurality of rods 44b, and the interval between the adjacent rods 44 is formed to a size such that the lens L does not come off. A guide body 43 (43a, 43a,
3b, 43c), respectively, after being locked and stored in the recesses formed in the cage body 4 for cleaning.
2, the rod 44b of the fall-prevention cover 44 comes into contact with the upper surface of the outer periphery of the lens L in the drawing or comes very close to the upper surface of the outer periphery of the lens L in the drawing. The fall prevention cover 44 of the present embodiment configured as described above is compared with the fall prevention lid using the mesh body of the first to fourth embodiments described above.
Due to the heavy weight of the fall-prevention lid body, the cleaning basket body 4
2, the lens L housed in the lens cleaning basket 41 can be removed by the weight of the body of the cap 44 when cleaning the lens, even if the cap 44 is not fixed using any fixing means. It can be held between the rod-shaped body 44b of 44 and the guide body 43 (43a, 43b, 43c) of the basket body 42 for cleaning, and can be reliably held in the basket 41 for cleaning.

The cleaning of the lens L using the lens cleaning basket 41 of this embodiment can be performed in the same manner as in the first to fourth embodiments, and the lens cleaning basket 41 containing 105 lenses L is used. The lens L
Is reliably held in the lens cleaning basket 41 by the effect of restricting the behavior of the lens L of the fall prevention cover 44, so that the lens can be cleaned without falling off or falling off in the cleaning step. Further, the lens cleaning basket 41 of the present embodiment does not require a fixing means for directly fixing the fall-off prevention lid, and can be simplified in structure.

[0042]

As described above, according to the present invention,
Using the cap for cleaning the lens, place the cap on the main body of the basket for cleaning and fix it, and make a part of the cap against the lens to contact at least a part of the outer periphery of the lens or the outer periphery of the lens. By setting the lens very close to the portion, the behavior of the lens housed in the lens cleaning basket can be regulated, and the lens can be securely held. Thereby, when cleaning the lens, it is possible to eliminate the problem that the lens is easily dropped in the cleaning basket, or that the lens is completely dropped from the cleaning basket,
Suppresses the occurrence of lens defects and a decrease in the operating rate of the cleaning device,
It is possible to improve productivity.

[Brief description of the drawings]

FIG. 1 shows a lens cleaning basket according to a first embodiment of the present invention;
(A) is a schematic top view of the lens cleaning basket showing a part of the fall-off prevention lid cut away, and (b) is a schematic side view of the lens cleaning basket showing a part broken away. Yes, (c)
FIG. 4 is a schematic perspective view showing the lens cleaning basket in a state where a fall prevention lid is removed from the cleaning basket main body.

FIG. 2 is a partially enlarged view of a guide body of a cleaning basket main body in the lens cleaning basket of the present invention.

FIG. 3 is a schematic diagram showing a configuration of an ultrasonic cleaning device for a lens.

FIG. 4 illustrates a lens cleaning basket according to a second embodiment of the present invention;
(A) is a schematic top view of the lens cleaning basket showing a part of the fall-off prevention lid cut away, and (b) is a schematic side view of the lens cleaning basket showing a part broken away. Yes, (c)
FIG. 4 is a schematic perspective view showing the lens cleaning basket in a state where a fall prevention lid is removed from a cleaning basket main body.

FIG. 5 shows a basket for cleaning a lens according to a third embodiment of the present invention;
(A) is a schematic perspective view showing a lens cleaning basket in a state where a fall prevention lid is removed from a cleaning basket main body,
(B) is a schematic perspective view of the lens cleaning basket showing a state in which the fall prevention cover is placed on the cleaning basket main body.

FIG. 6 is a perspective view of a lens cleaning basket according to a fourth embodiment of the present invention.

FIG. 7 shows a lens cleaning basket according to a fifth embodiment of the present invention;
(A) is a schematic top view of the lens cleaning basket showing a part of the fall-off prevention lid cut away, and (b) is a schematic side view of the lens cleaning basket showing a part broken away. Yes, (c)
FIG. 4 is a schematic perspective view showing a lens cleaning basket in a state where a fall prevention cover is placed on a cleaning basket main body.

8A and 8B show a conventional lens cleaning basket, FIG. 8A is a schematic top view of the lens cleaning basket, and FIG. 8B is a schematic side view of the lens cleaning basket partially cut away. It is a figure, (c) is the elements on larger scale of the guide body of the basket for lens cleaning.

[Explanation of symbols]

 1, 11, 21, 31, 41 Basket for lens cleaning 2, 12, 22, 32, 42 Basket body for cleaning 2a, 12a, 22a, 32a, 42a Frame body 3, 13, 23, 33, 43 Guide body 4, 14, 24, 34, 44 Fall-prevention lid 4a, 14a, 24a, 34a, 44a Lid frame 4b, 14b, 24b, 34b Mesh body 7 Hook 8 Hook hook 17 Slit groove 18 Fixing screw 27 Hook 28 Hook hook 29 Hinge 37 Cord (such as string) 44b Rod 50 Ultrasonic cleaning device 51 Inlet belt 52 Inlet 53 First cleaning liquid tank 53a First cleaning liquid 53b (First cleaning liquid) Surface 54, 55 Cleaning liquid tank 56 Drying tank 57 Exit belt

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kaoru Morimitsu 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term in Canon Inc. (reference) 3B201 AA03 AB24 AB45 BB02 BB83 BB92 CB01 CC11 3E096 AA09 BA21 BB04 CA02 CB03 DA17 DA25 DB06 DC02 FA09 GA07

Claims (4)

[Claims] An optical element cleaning basket for accommodating a large number of optical elements in parallel when cleaning optical elements, wherein the optical element cleaning basket accommodates a large number of optical elements in parallel at a predetermined interval. An optical element cleaning basket, comprising: a cleaning basket main body to be cleaned; and a fall-off prevention lid placed on the cleaning basket main body. 2. The drop-off prevention lid, when being placed on the cleaning basket main body, a part of the drop-off prevention lid is at least one of the optical elements housed in the cleaning basket main body. 2. The basket for cleaning optical elements according to claim 1, wherein the basket is formed so as to be always in contact with the portion or to be in a state very close to a part of each optical element. 3. The basket for cleaning an optical element according to claim 1, wherein the cap for preventing falling off is detachably fixed to the basket body for cleaning. 4. The upper surface of the fall-off prevention lid is formed of a mesh or a plurality of rods arranged at a predetermined interval.
The basket for cleaning an optical element according to Item.