JPH08122604A - Stage for placing circular optical parts - Google Patents

Abstract

PURPOSE: To place and support circular optical parts, such as plural lenses, varying in diameters, with one kind of stage and to subject these optical parts to transporting, working, heat treating, washing, chemical treating, etc., by providing the stage with specific placing holes for supporting the placed circular optical parts. CONSTITUTION: This stage consists of a base body 11 consisting of a thick flat plate made of a metal, etc., and four pueces of supporting legs for supporting this base body 11, These supporting legs 13 are fixed to the base body 11 by screwing, driving, joining, etc., and fitting holes 13a for connection at the diametrally expanded tops are bored. In the base body 11, the many placing holes 21 are bored. These placing holes 21 are formed into an inverted circular conical shape smoothly reduced in diameter in the depth direction. The tapered parts 21a are formed by such reduction in the diameter. Further, the placing holes 21 are formed continuously to through-holes 31 at their bottoms and are opened to the rear surface of the base body 11. Lenses 51 are received and supported by the tapered parts 21a of the placing holes 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting table having high versatility which can support an optical component such as a lens having a circular outer shape regardless of its diameter.

[0002]

2. Description of the Related Art In transportation, heat treatment, cleaning, etc., a lens is often supported by some holder without touching the effective surface of the lens, and the lens is often handled through this holder. If a large number of lenses can be placed on one holder at a time, a large number of lenses can be processed at one time by one holder.

However, there are various lens diameters, and it is not realistic to prepare a large-scale batch processing holder for all of them. In addition, it is sometimes desirable to collectively handle a large number of different lenses having different diameters with one holder, and it is practically impossible to prepare such a holder.

Therefore, conventionally, as shown in FIG. 9, a plate 71 having a plurality of through holes having the same diameter is formed, and the plate 71 is supported by the through holes, and the lens 51 itself can also be supported by the inner diameter portion. This has been dealt with by preparing the ring-shaped bodies 73, 75 (yatoy) and preparing various types of ring-shaped bodies 73, 75 having different inner diameters.

However, this method is also applicable to the ring-shaped members 73 and 75.
With respect to the above, it is necessary to prepare a large number of sizes, and if the required external dimension accuracy becomes high, various ring-shaped bodies 73 and 75 are required in small increments. Further, there is a risk of both detachment of the ring-shaped bodies 73 and 75 from the plate 71 and detachment of the lens from the ring-shaped bodies 73 and 75 due to vibration and shock during processing, and both of them may cause detachment accidents. Likely to happen.

Further, in the processing performed under heating, the metallic ring-shaped members 73 and 75 and the glass lens 51 are used.
Since the coefficient of thermal expansion differs greatly between and,
There is a problem that the inner diameter of 75 becomes large due to heating and the lens 51 falls.

[0007]

SUMMARY OF THE INVENTION The present invention provides a mounting table that can support circular optical components such as lenses having different outer diameters without requiring a special jig. The present invention also provides a mounting table in which a lens or the like does not drop due to a difference in coefficient of thermal expansion during heat treatment.

[0008]

FIG. 1 shows an embodiment of a mounting table of the present invention, (A) is a plan view, (B) is a line B of (A).
FIG. 3B is a sectional view taken along line -B, and FIG. 2 is a line (A) of FIG.
FIG. 11 is a sectional view taken along line II-II.

The mounting table comprises a table body 11 made of a thick plate such as metal and four supporting legs 13 for supporting the table body 11. The support leg 13 is fixed to the base body 11 by screwing, driving, joining or the like, and a connecting fitting hole 13a is formed in the bulged top portion.

A large number of mounting holes 21 are formed in the base body 11. The mounting hole 21 is in the shape of a rivet that smoothly reduces its diameter in the depth direction, and this reduction in diameter forms the taper portion 21a. In this embodiment, the vertical wall 21b is provided above the taper portion 21a, but this is not always necessary. The mounting hole 21 is connected to the through hole 31 at the bottom thereof and is opened to the back surface of the table body 11.

As shown in FIG. 1C, the lens 51
Are received and supported by the tapered portion 21 a of the mounting hole 21. Therefore, a lens having a diameter between the maximum diameter (upper portion) and the minimum diameter (lower portion) of the mounting hole 21 that contracts in the depth direction can be supported by the tapered portion 21a. Therefore, if one type of mounting table is prepared, the lenses 51 having a wide range of diameters can be mounted, and also a plurality of types of lenses 51 having different diameters can be simultaneously supported by one mounting table. can do.

Furthermore, when the lens 51 is heated while being supported in the mounting hole 21, even if the diameter of the mounting hole 21 becomes large due to the difference in the coefficient of thermal expansion between glass and metal, the lens 51 is tapered. The part 21a only slides down slightly, and does not fall from the mounting hole 21. When the temperature returns to room temperature after the heating is completed, the lens 51 returns to the original position.

FIG. 3 shows an angle α formed by the tapered portion 21a of the mounting hole 21. The larger this angle α is, the larger the difference between the maximum diameter and the minimum diameter of the mounting hole 21 is, and thus the diameter range of the lens 51 that can be mounted can be widened. However, on the other hand, the mounting stability of the lens becomes poor. On the contrary, when the angle α is reduced, the diameter range of the lens that can be mounted is narrowed. When the lens is placed and heat-treated, the diameter of the placing hole 21 increases due to the difference in coefficient of thermal expansion between the glass lens and the placing table made of metal, and the lens 51 moves downward and cools on the spot. There is a risk of being bitten. Therefore, the angle α formed by the tapered portion 21a is 80 to 160.
The preferred degree is 100 to 130 degrees.

When mounting a lens (optical component) whose lower surface is convex as shown in FIG. 1C, the edge of the lens contacts the tapered surface 21 and the convex surface of the lens is the tapered surface 2.
It is necessary not to touch 1a. Also from this request, the angle range of α is desirable.

In the embodiment shown in FIG. 1, the mounting hole 2
1 is opened to the lower surface of the base body 11 through the through hole 31. Therefore, when the lens is taken out from the mounting hole 21, it is possible to easily push the lens up from below through the through hole 31 with a finger or the like. Also, when taking out after immersing in liquid for cleaning, chemical treatment, etc.,
The liquid flows down quickly and does not cause liquid pool.

Although FIG. 1 shows a mounting table in which six mounting holes 21 are formed, more mounting holes 21 can be formed to enhance the batch processing capacity, and conversely, a smaller number can be achieved. However, for example, only one mounting hole 21 may be formed in the mounting table.

FIG. 4 is a side view showing another embodiment for improving the batch processing capacity. Fitting hole 13a for connection of the support leg 13 fixed to the table body 11 of the mounting table (see FIGS. 1 and 2)
The tip ends of the supporting legs 13 'of the other mounting bases are fitted in the two mounting bases so that the two mounting bases are stably stacked. According to this method, it is possible to stack more mounting bases, and it is possible to collectively process many lenses in a narrow space.

FIG. 5 is an exploded partial sectional view showing another embodiment of the present invention. The basic structure of the mounting table including the mounting hole 21 is the same as that of FIG. In FIG. 5, the restriction ring member 41 is used as a separate member. The restriction ring member 41 has an outer diameter that fits into the vertical wall 21b and an inner diameter that matches the outer diameter of the lens 51. Therefore, in the restriction ring member 41, the outer peripheral portion 41a is fitted to the vertical wall 21a, and the tapered surface is in contact with the tapered portion 21a, so that the mounting hole 2 is placed.
It fits within 1. Then, the inner peripheral portion 4 of the restriction ring member 41
The movement of the lens 51 is restricted by 1b, and the lens 5
The lens 1 is prevented from being tilted and supported by the mounting hole 21, or the lens 51 moving in the mounting hole 21 due to vibration, impact, or the like.

6 to 8 are sectional views showing other examples of the mounting hole according to the present invention. The mounting hole 23 shown in FIG. 6 is different from the mounting hole 2 shown in FIG. 1 except that it does not have a vertical wall (21b in FIG. 1).
Same as 1. The lens 51 can be easily stored and taken out, and the base body 11 can be made thin.

In the mounting hole 25 shown in FIG. 7, the entire thickness of the base body 11 can be used as the taper portion 25a, so that the diameter range of the mountable lens can be widened or the thickness of the base body 11 can be reduced. It will be possible.

FIG. 8 shows that the mounting hole 27 has a conical shape with its diameter smoothly reduced in the depth direction, has no through hole, and is not opened on the back surface of the base body 11. It is the same as the mounting hole. The tapered portion 27a allows one mounting hole 27 to support lenses having different diameters, and the essential effect of the present invention is no different from that of a mounting hole having a through hole.

The mounting object of the mounting table of the present invention is a circular optical component such as a lens, a filter or a flat glass.
In addition, for example, a deformed lens such as a part of the lens cut out in the thickness direction also has a circular part retained on the outer shape of the remaining part,
Since it can be supported by the mounting hole of the present invention, it is included in the circular optical component of the present invention.

[0023]

By using the mounting table of the present invention, a plurality of circular optical components such as lenses having different diameters can be mounted and supported by one mounting table, and transported, processed, heat treated, washed,
Chemical treatment etc. can be performed. Further, according to the mounting table of the present invention, it is possible to prevent the lens from dropping from the mounting table due to the difference in coefficient of thermal expansion between the metal and the glass during heating.

[Brief description of drawings]

1A and 1B show an embodiment of a mounting table of the present invention, FIG. 1A is a plan view, FIG. 1B is a sectional view taken along line AA, and FIG. 1C is a partial sectional view showing a state where a lens is mounted. It is a figure.

2 is a cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a partial cross-sectional view showing an angle α formed by a tapered portion 21a.

FIG. 4 is a side view showing a state in which the mounting tables are piled up.

FIG. 5 is an exploded partial sectional view showing an example of a mounting method using the mounting table of the present invention.

FIG. 6 is a partial cross-sectional view showing a configuration example of a mounting hole in the present invention.

FIG. 7 is a partial cross-sectional view showing a configuration example of a mounting hole in the present invention.

FIG. 8 is a partial cross-sectional view showing a configuration example of a mounting hole in the present invention.

FIG. 9 is a cross-sectional view showing a conventional method of mounting lenses having different diameters.

[Explanation of symbols]

 11, 11 'Stand main body 13, 13' Support leg 13a Connection fitting hole 21 Mounting hole 21a Tapered portion 23, 25, 27 Mounting hole 23a, 25a, 27a Tapered portion 31 Through hole 41 Restriction ring member 41a Outer peripheral portion 41b Inner peripheral portion 51 Lens 71 Plate 73, 75 Ring-shaped body

Claims (3)

[Claims] 1. A mounting table for mounting a circular optical component, wherein a circular or conical or sliver-shaped circular mounting hole for smoothly reducing the diameter of the mounted circular optical component in the depth direction is provided. A mounting table characterized by having. 2. The mounting hole is opened to the lower surface of the mounting table directly or through another through hole below the mounting hole.
The mounting table described in. 3. A regulation ring member for regulating the movement of the circular optical component in the mounting hole, the regulation ring member having an inner diameter corresponding to the outer shape of the circular optical component and an outer shape fitting into the mounting hole. The mounting table described in 1 or 2.