JP2006053278A - Polyhedron aligning method, polyhedron holding unit, and packing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To satisfactorily orient, hold and align mass-produced polyhedrons for minute optical components, and to provide them to the subsequent step or an assembly maker. <P>SOLUTION: The polyhedron aligning method includes: a joining process in which connection rod-like bodies 20 are parallelly joined at prescribed intervals onto an adhesive sheet stuck to one side of a base sheet 31, each connection rod-like body being composed of a plurality of polyhedrons of the identical shape that are connected in the form of a rod; a first cutting step in which the adhesive sheet is completely cut along the first cutting lines L1 located parallel to and between the connection rod-like bodies and the base sheet is half-cut such that a laminated sheet has yet to be separated; a second cutting step in which each connection rod-like body is completely cut along second cutting lines extending across the first cutting lines and along boundaries between the polyhedrons and the adhesive sheet is half-cut; and a step in which the polyhedrons thus cut are peeled from the adhesive sheet to which they are stuck and held, and thus a polyhedron hold unit is formed such that the polyhedrons are stuck and held on the adhesive sheet at the prescribed intervals in a line. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a polyhedron alignment method and a polyhedron holding unit that can hold a polyhedron such as a micro-optical component mass-produced in good orientation and provide it to the next process or an assembly maker.

Polyhedrons such as beam splitters and prisms as optical devices used in optical pickups and other optical devices are configured to have a small size of several mm square due to the demand for miniaturization, but with good productivity in consideration of yield. Conventionally, various manufacturing methods have been proposed for manufacturing.
For example, a cubic beam splitter 1 as shown in FIG. 5A is formed into a cube by joining two triangular prism-like glass prisms 2 and 3 through a beam splitter film (polarization separation film) 4. In the production of the glass block 10, the inclined surface A and both end surfaces B and C of the triangular prism glass block 10 having a right-angled triangular cross section as shown in FIG. A beam splitter film 4 is formed on the inclined surface A, and an antireflection film (AR film) is formed on the other surface. Two such glass blocks 10 are prepared, and the inclined surfaces A are joined together with an adhesive to obtain the rectangular parallelepiped glass block 11 shown in (c). The glass block 11 is cut and divided at a predetermined pitch along the longitudinal direction as shown in (d) to obtain a cubic beam splitter.
However, this manufacturing method not only has the disadvantages that the man-hours are extremely large and complicated, and the productivity is poor, but in order to provide the beam splitter after being cut to the next process or assembly maker, It is necessary to manually store the individual beam splitters 1 one by one in the storage location 16 on the tray 15 as shown in FIG. At this time, in order to facilitate the next assembling work, it is necessary to carry out the storing operation on the tray so that the incident surface and the emitting surface of the beam splitter can be reliably discriminated from the storing direction on the tray. . That is, when the divided beam splitter pieces are stored in the tray, it is necessary to store them so that the same surfaces of all the pieces are set in the same direction.
However, the storage work in such a case includes the work of visually confirming the directionality of the minute beam splitter and the work of holding the tweezers after confirmation and storing the same surface in the same direction in the storage place 16. Since it is necessary, the operation is complicated and inefficient as a whole.

Next, in Japanese Patent Laid-Open No. 2000-296894, a double-sided adhesive tape is handed over to the bottom surface of an optical device housing provided in a case, and the optical device is adhered and held on the tape at a predetermined pitch, thereby transporting the optical device. An optical device packaging case has been disclosed in which problems due to the occasional movement of the optical device are eliminated. However, even in the case described in this publication, it is necessary to perform complicated work for setting the optical device pieces one by one in a predetermined direction in the accommodating portion. This measure is not disclosed.
Further, in JP 2000-143264 A, a plurality of rectangular glass plates having a polarization separation film formed on one side in advance are overlapped and bonded in a predetermined direction while being cut and divided along a predetermined cutting line, A connected body in which a plurality of target rectangular parallelepiped beam splitters are connected in a rod shape by performing a process in which the cut laminated bodies are joined together and then cut into a plurality of pieces along a direction orthogonal to the joining surface. And finally the procedure of dividing it into pieces is disclosed.
However, even in the manufacturing method described in this publication, after dividing a connecting body in which a plurality of beam splitters are connected in a rod shape, the directionality is visually confirmed for each piece, and the same surface is the same. It is necessary to manually store it in the tray in the state of facing the direction.
Thus, the work of storing optical components as minute polyhedrons in a tray while maintaining a predetermined orientation has been performed from the past, but no measures have been taken to improve the workability. It was a fact.
JP 2000-296894 A JP 2000-143264 A

  The present invention has been made in view of the above, and after forming a single rod-like coupling structure in which a plurality of optical components comprising cubes, rectangular parallelepipeds, triangular prisms, and other polyhedrons are connected in series, this rod-like coupling is formed. In a method of manufacturing an optical component that includes a step of completing an optical component by dividing the body into individual pieces, the rod-shaped connecting body before being divided is attached to the adhesive sheet in a predetermined procedure, and then the predetermined procedure is followed. An object of the present invention is to provide a polyhedron alignment method and a polyhedron holding unit capable of aligning a plurality of polyhedrons in a state where the directionality is aligned on the pressure-sensitive adhesive sheet by performing the cutting operation.

In order to solve the above-mentioned problem, the invention of claim 1 is an alignment method for aligning a polyhedron by adhering a plurality of polyhedrons on a pressure-sensitive adhesive sheet with the same orientation and bonding the pressure-sensitive adhesive sheet to one side of a base sheet A bonding step of bonding a connecting rod-like body in which a plurality of polyhedrons of the same shape are connected in a rod shape on a pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet of the laminated sheet, in parallel with a predetermined interval and with the same directionality. The adhesive sheet positioned between the connecting rod-like bodies is completely cut along a first cutting line parallel to the connecting rod-like bodies, and the base sheet is half-cut to bring the laminated sheet into an unseparated state. A first cutting step, a first step of completely cutting each connecting rod-shaped body along each second cutting line that intersects the first cutting line and along the boundary of the polyhedral piece and half-cuts the adhesive sheet 2 A step of forming a polyhedron holding unit in which the adhesive sheet holding the cut polyhedron is peeled off from the base sheet and the polyhedron pieces are bonded and held in a row on the pressure sensitive adhesive sheet at a predetermined interval; It is characterized by comprising.
According to a second aspect of the present invention, in the first aspect, the polyhedron is an optical component made of glass.
According to a third aspect of the present invention, in the first or second aspect, one surface of the optical component bonded to the pressure-sensitive adhesive sheet is a non-optical surface.
A polyhedron holding unit according to a fourth aspect of the present invention is formed by the polyhedron alignment method according to the first, second, or third aspect.
According to a fifth aspect of the present invention, there is provided a packing structure in which a cushion plate is placed on at least the opposite side of the adhesive sheet of the polyhedron holding unit according to claim 4, and the polyhedron holding unit and the cushion material are sandwiched between plate-like reinforcing members. It is characterized in that it is sealed and packed in the state where it is made.
According to a sixth aspect of the present invention, there is provided a packing structure in which a cushion plate is placed on at least the opposite side of the adhesive sheet of the polyhedron holding unit according to claim 4, and the polyhedron holding unit and the cushion material are sandwiched between plate-like reinforcing members. It is characterized by being packaged by packing in a state in which a plurality of such products are stacked.

  According to the present invention, using a laminated sheet in which an adhesive sheet is laminated on a base sheet, a plurality of connecting rod-like bodies are bonded and held in parallel at a predetermined interval, and then the base along the first cutting line. By forming a cut reaching the middle of the sheet thickness, and further dividing the connecting rod-like body and the laminated sheet along the second cutting line intersecting the second cutting line, the polyhedral pieces are predetermined Since the polyhedron holding units arranged in a row on the pressure-sensitive adhesive sheet at intervals are obtained, the directionality of each polyhedron piece is uniquely determined at the time when the connecting rod-like body is bonded onto the pressure-sensitive adhesive sheet, In the stage where the polyhedron holding unit is completed, the directionality of the polyhedron pieces does not shift or change. Therefore, the directionality of the polyhedron adhered and held on the pressure-sensitive adhesive sheet in the polyhedron holding unit can be easily known, and the directionality of the polyhedron when the polyhedron is mounted on an actual machine can be prevented.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 (a) shows a rod-shaped connecting body 20 of the beam splitter formed in the process of manufacturing the beam splitter 1 by the procedure described in Japanese Patent Laid-Open No. 2000-143264, and FIG. The beam splitter piece 1 obtained by dividing | segmenting in the joint surface 20a is shown. This rod-shaped connecting body 20 has a structure in which the entrance surface and the exit surface of the beam splitter 1 are joined in series with the same direction, and paraffin that dissolves by heating is used as the joining means 21 between the pieces. It may be a normal adhesive.
FIG. 2 is a process diagram for explaining a polyhedron alignment method according to an embodiment of the present invention.
The present invention relates to a method of aligning polyhedrons by using a laminated sheet 30 by sticking and holding a plurality of polyhedrons (in this example, beam splitters) having directionality on at least one surface. Is. Here, a surface having directionality refers to a surface used as a light incident / exit surface among six surfaces such as an incident surface and an output surface.
The laminated sheet 30 includes a circular base sheet 31 having a large area, and a small-area adhesive sheet 32 that is detachably held by an adhesive layer provided at least in the center of the base sheet 31. The base sheet 31 is composed of, for example, a resin sheet having a predetermined thickness and an adhesive layer provided at the center thereof. The pressure-sensitive adhesive sheet 32 is, for example, a rectangular sheet having a pressure-sensitive adhesive surface on the front surface side, and is adhered and fixed to the adhesive layer at the center of the base sheet 31 by a peelable adhesive force.
In the polyhedron alignment method of the present invention, the connecting rod-like bodies 20 in which the same number of beam splitters 1 as polyhedrons are connected in the same bar shape on the adhesive surface of the adhesive sheet 32 adhered to one side of the base sheet 31 are arranged at a predetermined interval. A bonding step is performed in which the layers are bonded in parallel with the same directionality. At this time, the incident surface of each beam splitter constituting the connecting rod-shaped body 20 or a surface other than the exit surface (hereinafter referred to as a non-optical surface) is adhered on the adhesive sheet 32, and the entrance surface and the exit surface are specified. The direction of the connecting rod-shaped body is determined so as to face the direction of.
Next, the adhesive sheet 32 positioned between the connecting rod-like bodies 20 is completely cut along a first cutting line L1 parallel to the connecting rod-like bodies using a cutter (not shown), and the base sheet 31 is half-cut. Thereby, the 1st cutting process which makes the lamination sheet 30 an unseparated state is implemented. That is, a notch reaching the middle portion of the thickness of the base sheet 31 is formed along the central portion of the adhesive sheet 32 located between the connecting rod-like bodies 20. In this state, the base sheet 31 is not completely divided and is in a state of being connected via an uncut portion by each first cutting line L1.
Next, each connecting rod-like body 20 is completely cut along each second cutting line L2 along the boundary 21 of the polyhedral piece while intersecting (orthogonal) with the first cutting line L2, and the adhesive sheet 32 is half-cut. The 2nd cutting process to cut is implemented ((a) (b)). As a result, the connecting rod-like body 20 is completely divided along each second cutting line L2. Next, the tape-like adhesive sheet (adhesive tape) 32a holding and holding the cut beam splitter pieces 1 is peeled off from the base sheet 31, and the beam splitter pieces are arranged in a line on the adhesive tape 32a at a predetermined interval. A step of forming the polyhedron holding unit 35 bonded and held is performed ((c)).

The polyhedron holding unit 35 has a configuration in which one specific surface (non-optical surface, lower surface in FIG. 1) of each beam splitter 1 is bonded onto the adhesive tape 32a. As shown in FIG. 3, the beam is applied to the adhesive tape 32a. In the state where the splitter is attached, it is confirmed whether or not the bonding direction is correct by inspecting the top surface and both side surfaces. When it is confirmed that the direction of bonding of the beam splitter on the adhesive tape 32a is correct, it can be transferred to the next process or shipped by packing.
The work of improving the workability can be improved because it is not necessary to visually inspect the beam splitters of several mm square one by one and store them in the tray using tweezers.
In addition, when this beam splitter is incorporated in an actual machine, the beam splitter (polyhedral holding unit 35) bonded with an adhesive tape 32a is used, and any surface is an optical surface (incident with the adhesive surface of the adhesive tape 32a as a clue. Surface or exit surface), it is possible to easily discriminate the directionality during the assembling work.
The alignment method of the present invention is not limited to the connecting rod-like body manufactured by the method described in Japanese Patent Laid-Open No. 2000-143264, and the inclined surfaces of the triangular prism-like glass as shown in FIGS. The present invention can also be applied to the bonded rectangular parallelepiped glass (connecting rod-like body). That is, the first and second cuts in the state where a plurality of connecting rods shown in FIG. 5 (c) are adhered and held on the adhesive sheet 32 at a predetermined interval in parallel as shown in FIG. 2 (a). By performing the process, the polyhedron holding unit 35 can be formed.
Further, the polyhedron to which the alignment method of the present invention is applied is not limited to a beam splitter, but can be any polyhedron-shaped optical component (prism, mirror, TAP filter, etc.).

Next, FIG. 4A is a longitudinal sectional view showing an example of the packing method of the polyhedron holding unit 35 of the present invention, and the lower surface of the adhesive tape 32a of the polyhedron holding unit 35 is placed on the lower mount 40a. In addition, an upper mount 40b is attached to the upper surface of each polyhedron 1 on the adhesive tape via a cushion plate 41 made of sponge, foam material, rubber or the like, and the polyhedron holding unit is formed by upper and lower mounts (reinforcing members). In a state where 35 is held under pressure, it is sealed with a rubber band, vinyl tape or the like (not shown). Furthermore, it packs up in packing bodies, such as a cardboard box, as needed. When packing a plurality of polyhedron holding units 35, as shown in FIG. 4 (b), the layers shown in FIG. 4 (a) may be stacked and stacked.
The polyhedron alignment method of the present invention is not limited to optical parts, but can be applied to members and parts manufactured in general by dividing a connecting body in which individual pieces are connected in a rod shape into individual pieces. In addition, the polyhedron need not be flat on all surfaces.

(A) And (b) is a perspective view of an example of the connection rod-shaped body of this invention, and a block diagram of a beam splitter. (A) (b) And (c) is explanatory drawing of the alignment method of this invention. Explanatory drawing of the inspection method of a polyhedron holding | maintenance unit. (A) is a longitudinal cross-sectional view which shows an example of the packing method of the polyhedron holding | maintenance unit of this invention, (b) is explanatory drawing which shows the state laminated | stacked and packed in multiple stages. (A) is a perspective view of a beam splitter piece, (b) (c) and (d) is a figure which shows the manufacturing procedure of the conventional beam splitter. The structure explanatory view of the tray which stores an optical component.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Beam splitter (polyhedron), 20 stick-shaped coupling body, 20a joining surface, 21 joining means, 30 lamination sheet, 31 base sheet, 32 adhesive sheet, 32a adhesive tape, 35 polyhedron holding unit, 40a, 40b mount, 41 cushion board.

Claims (6)

An alignment method for aligning a polyhedron by adhering a plurality of polyhedrons on a pressure-sensitive adhesive sheet with the orientation thereof aligned,
A connecting rod-like body in which a plurality of polyhedrons of the same shape are connected in a rod shape on a pressure-sensitive adhesive surface of a laminated sheet obtained by adhering a pressure-sensitive adhesive sheet to one side of a base sheet is parallel and directional with a predetermined interval. Bonding process to align and bond the same,
The adhesive sheet positioned between the connecting rod-like bodies is completely cut along a first cutting line parallel to the connecting rod-like bodies, and the base sheet is half-cut to make the laminated sheet unseparated. Cutting process of
A second cutting step of completely cutting each connecting rod-like body along each second cutting line that intersects the first cutting line and along the boundary of the polyhedral piece and half-cuts the adhesive sheet;
Forming a polyhedron holding unit in which the adhesive sheet holding the cut polyhedron is peeled off from the base sheet and the polyhedron pieces are bonded and held in a row on the pressure sensitive adhesive sheet at a predetermined interval. A polyhedron alignment method characterized by   The polyhedron alignment method according to claim 1, wherein the polyhedron is an optical component made of glass.   The method of aligning polyhedrons according to claim 1, wherein one surface of the optical component bonded to the pressure-sensitive adhesive sheet is a non-optical surface.   A polyhedron holding unit formed by the polyhedron alignment method according to claim 1, 2 or 3.   A cushion plate is placed on at least the facing side of the pressure-sensitive adhesive sheet of the polyhedral holding unit according to claim 4, and the polyhedral holding unit and the cushion material are band-sealed in a state of being sandwiched between plate-shaped reinforcing members and packed. The polyhedron holding unit packaging structure.   A cushion plate is placed on at least the facing side of the pressure-sensitive adhesive sheet of the polyhedral holding unit according to claim 4, and the banding is performed in a state where a plurality of the polyhedral holding units and the cushion material sandwiched by plate-like reinforcing members are stacked. Packing structure of polyhedron holding unit characterized by packing.

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