JPH11109200A - Fixing device for optical member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a fixing device for regulating and fixing the position, direction and posture of an optical member such as prism which is used in the manufacturing process of an optical information recording device or the like, precisely regulate the position, direction and posture of the optical member, and efficiently irradiate an ultraviolet ray to fix the optical member. SOLUTION: The irradiation mechanism tip part 32 of an ultraviolet ray irradiation mechanism 30 is provided within the body 21 of a holding mechanism 20. A prism 10 is sucked to a holding part 21a by vacuuming of a vacuum pump P, the prism 10 is temporarily fixed to a base member 43 while regulating the position, direction and posture of the prism 10, and an ultraviolet ray is irradiated to an adhesive applied from the irradiation mechanism tip part 32 to a fixing part 42. Thus, the prism 10 is fixed to the fixing part 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for adjusting and fixing the position and orientation of an optical member used in a manufacturing process of, for example, an optical information recording / reproducing device.

[0002]

2. Description of the Related Art Conventionally, in a process of manufacturing an optical information recording / reproducing apparatus and the like, when an optical member such as a prism is fixed to a predetermined member, the position and the direction of the optical member are adjusted and the position and the direction are adjusted. A holding device for temporarily fixing the optical member to the surface to be fixed and a fixing device independent of the fixing device for curing and fixing the adhesive are used. The optical member is vacuum-sucked by the holding device, installed at a predetermined position where an ultraviolet-curable adhesive is applied, and the orientation is adjusted. In a state where the optical member is held by the holding device, a fixing device is disposed near the holding device, and the fixing device irradiates the bonding surface of the optical member with ultraviolet light, whereby the adhesive is cured, and the optical member is cured. It is fixed.

[0003]

With the downsizing of an optical information recording / reproducing apparatus and the like, it is necessary to reduce the size of an optical member and a member for bonding the optical member. However, if the holding device and the fixing device are independent from each other, it is difficult to reduce the size of the holding and fixing device as a whole. And it becomes difficult to fix the optical member to the miniaturized member.

The present invention aims at miniaturizing a fixing device for adjusting and fixing a position, an orientation and a posture of an optical member such as a prism used in a manufacturing process of, for example, an optical information recording / reproducing device and fixing the position of the optical member. An object of the present invention is to make it possible to fix the optical member by adjusting the orientation and orientation with high precision and efficiently irradiating ultraviolet light.

[0005]

According to the present invention, there is provided an optical member fixing apparatus in which an optical member through which ultraviolet light is transmitted is installed on a portion to be adhered, and a position, an orientation and a posture of the optical member are set at the installed position. At least one is adjusted, and a holding mechanism for temporarily fixing, and a light transmitting through the optical member in order to cure the adhesive incorporated in the holding mechanism and applied to fix the optical member to the portion to be bonded. An ultraviolet light irradiation mechanism for emitting ultraviolet light is provided so as to irradiate the adhesive.

[0006] Preferably, the holding mechanism is connected to a vacuum device, and holds the optical member by evacuating a closed space formed by the holding mechanism and the optical member.

[0007] Preferably, a part of the ultraviolet light irradiation mechanism for emitting ultraviolet light is incorporated in the holding mechanism. More preferably, the holding mechanism comprises an opaque member. Alternatively, the holding unit that holds the optical member by the holding mechanism may have a holding surface that engages with a side surface of the optical member.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an example of an embodiment of the present invention, and is a cross-sectional view of a fixing device that adjusts and fixes a position of an optical member. FIG. 2 is an example of an embodiment of the present invention, and is a diagram illustrating a fixing device that adjusts and fixes a position of an optical member.

The fixing device of this embodiment has a holding mechanism 20 and an ultraviolet light irradiation mechanism 30. The holding mechanism 20 includes a cylindrical main body 21, a suction tube 22, and a suction tube 23. The ultraviolet light irradiation mechanism 30 includes an irradiation mechanism tip 32, a fixing member 33, and a cable 31.

The optical member 10 is held by being vacuum-sucked by the holding mechanism 20 and is temporarily fixed to the fixing portion 42 of the base member 43. The optical member 10 is, for example, a prism or the like, and is formed of a transparent material that transmits ultraviolet light. An adhesive is applied to the fixing portion 42 in advance, and the adhesive is an ultraviolet light curing type. The ultraviolet light is transmitted through the prism 10 by the ultraviolet light irradiation mechanism 30 to irradiate the adhesive, so that the prism 10
To be fixed.

Hereinafter, the configurations of the holding mechanism 20 and the ultraviolet light irradiation mechanism 30 will be described in detail. In the holding mechanism 20, the main body 21 and the suction pipe 22 are formed of a highly airtight member so that the inside can be kept in a vacuum. Furthermore, the main body 21
Is formed of an opaque member, and prevents unnecessary leakage of ultraviolet light to the outside. The holding portion 21a is an opening on the lower side of the main body 21 in FIGS. 1 and 2 and has a step.
This step has a holding surface that engages the side surface of the prism 10. The suction tube 22 is provided on the side surface of the main body 21 and below the irradiation mechanism distal end portion 32. A suction tube 23 is connected to the suction tube 22, and a vacuum pump P (vacuum device) is connected to the suction tube 23.

In the ultraviolet light irradiation mechanism 30, the cable 3
Reference numeral 1 denotes a freely bendable transmission line, which contains an optical fiber. The cable 31 is connected to an ultraviolet light source 39 provided in a control device that controls the fixing device. The cable 31 and the irradiation mechanism tip 32 are held by a fixing member 33. The irradiation mechanism tip 32 and the fixing member 33 are inserted into the cylinder of the main body 21 of the holding mechanism 20. The fixing member 33 is fixed to the main body 21 by screwing a screw into a screw hole 40 provided in the main body 21. When the distance between the end face 32a of the irradiation mechanism tip 32 and the end face of the optical fiber is long, a lens or the like for preventing the diffusion of ultraviolet light may be provided in the irradiation mechanism tip 32.

An operation of attaching the optical member 10 to the base member 43 by the holding mechanism 20 and the ultraviolet light irradiation mechanism 30 having the above-described structures will be described.

First, the adhesive is applied to the fixing portion 4 of the base member 43.
2 is applied. The prism 10 is placed on a tray or the like on a table. The holding portion 21a of the main body 21 is disposed above the prism 10, and the prism 10 is engaged with a step provided on the holding portion 21a along the shape of the prism 10. Thereby, a negative pressure chamber (closed space) S is formed by the prism 10 and the main body 21. By turning on a switch provided in the vacuum pump P, the vacuum pump P is operated, and a negative pressure is generated in the negative pressure chamber S. The prism 10 is attracted to the holding mechanism 20 by this negative pressure.

The holding mechanism 20 is moved right above the base member 43, and the prism 10 is arranged on the fixing portion 42.
The position of the main body 21 is slightly adjusted on the surface of the fixing portion 42 while being slightly pressed in the downward direction in FIGS. Thereby, the adhesive is thinly and uniformly spread, and the position, orientation, and posture of the prism 10 are adjusted. At this time, the prism 10 is held in a state where the prism 10 is prevented from moving in each direction parallel to the surface of the fixing portion 42 by a step having a surface engaging with the side surface of the prism 10 provided on the holding portion 21 a of the holding mechanism 20. It is fixed to the mechanism 20. Therefore, by finely moving and rotating the main body 21 of the holding mechanism 20, the position of the prism 10 can be finely adjusted.

With the prism 10 temporarily fixed by the holding mechanism 20, the switch of the ultraviolet light source 39 provided in the control device is turned on, and the ultraviolet light is emitted from the end face 32a of the irradiation mechanism tip 32. The adhesive is cured by the ultraviolet light transmitted through the prism 10, whereby the prism 1
0 is fixed to the fixing portion 42.

A switch provided on the vacuum pump is turned off. The vacuum pump P is stopped, and air is fed into the negative pressure chamber S, thereby returning the negative pressure chamber S to the atmospheric pressure. By lifting the holding mechanism 20, the prism 10 is released from the holding mechanism 20. By the above operation, the position and orientation of the prism 10 are adjusted and fixed to the base member.

In this embodiment, the holding mechanism 20
Although the prism 10 is sucked by evacuating the closed space S, the prism 10 may be held by mechanically sandwiching the prism.

According to the above embodiment, the fixing device is
Since the ultraviolet light irradiation mechanism 30 is provided in the cylinder of the main body 21 of the holding mechanism 20, the size is reduced. For this reason, even if the base member 43 is downsized, the holding mechanism 20 can be
With the position and orientation of 0 being adjusted with high precision and temporarily fixed,
Ultraviolet light can be emitted by the ultraviolet light irradiation mechanism 30. Further, since the ultraviolet light irradiation mechanism 30 irradiates the ultraviolet light in the holding mechanism 20, the ultraviolet light is efficiently irradiated to the adhesive without diverging to the outside. Thus, the prism 10 is easily fixed to the base member 43.

As shown in FIG. 3, a switch 55 for irradiating ultraviolet light and a switch 56 for operating a vacuum pump may be provided at predetermined positions of the main body 21 of the holding mechanism 20. In this case, these switches 55 and 56 are connected to the ultraviolet light source 39 and the vacuum pump P by signal cables, respectively.
By the switches 55 and 56, the fixing of the prism 10 can be centrally operated at hand.

[0021]

As described above, according to the present invention, a small-sized fixing device for adjusting and fixing the position, orientation and posture of an optical member such as a prism used in a manufacturing process of an optical information recording / reproducing device or the like, for example. As a result, the position, orientation, and orientation of the optical member are adjusted with high precision, and the ultraviolet light is efficiently irradiated, so that the optical member can be fixed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a fixing device that adjusts and fixes a position of an optical member, which is an example of an embodiment of the present invention.

FIG. 2 is a diagram illustrating a fixing device that adjusts and fixes a position of an optical member according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a fixing device that adjusts and fixes the position of an optical member according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Prism (optical member) 20 Holding mechanism 30 Ultraviolet light irradiation mechanism 42 Fixed part (adhered part) S Negative pressure chamber (closed space)

Claims (5)

[Claims] 1. A holding mechanism for mounting an optical member through which ultraviolet light is transmitted on an adherend, adjusting at least one of a position, an orientation, and a posture at a place where the member is installed and temporarily fixing the member. In order to harden the adhesive applied to fix the optical member to the portion to be bonded, which is incorporated in the holding mechanism, ultraviolet light is transmitted through the optical member to irradiate the adhesive. And an ultraviolet light irradiation mechanism that emits light. 2. The optical system according to claim 1, wherein the holding mechanism is connected to a vacuum device, and holds the optical member by evacuating a closed space formed by the holding mechanism and the optical member. 2. The fixing device for an optical member according to claim 1. 3. The optical member fixing device according to claim 1, wherein a portion of the ultraviolet light irradiation mechanism that emits the ultraviolet light is incorporated in the holding mechanism. 4. The fixing device according to claim 3, wherein the holding mechanism is made of an opaque member. 5. The optical member fixing device according to claim 3, wherein the holding portion that holds the optical member by the holding mechanism has a holding surface that engages with a side surface of the optical member.