JPH068571Y2 - Light source - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a light source device having an optical fiber as a light propagation medium, and more particularly to a light source device used for curing an ultraviolet curable resin.

[Prior art]

Ultraviolet curable resins are being widely used as resins that can be rapidly cured without heating. This uses a mercury xenon lamp or the like as a light source, converges and projects the light on one end of an optical fiber, propagates it, and projects it on the resin from the other end.

[Problems to be solved by the invention]

In such a light source device, it is important to adjust and fix the position of the light source so that light can be used for curing without waste, and it takes a long time to adjust the position during manufacturing. Further, when the life of the light source is exhausted, the user of the light source device does not have an optical device for adjustment as the manufacturer has, so that the light source cannot be replaced.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a light source device capable of shortening the manufacturing time and easily exchanging the light source by the user.

[Means for solving problems]

The light source device according to the present invention is a light source device for propagating light emitted from a light source through an optical fiber, and a relative position between a reflector that is opposed to the optical fiber and has a relative position fixed to the reflector. A fixed reflector case, a cylindrical member integrally fixed to the back surface of the reflector case, having a hole at the center thereof through which the light source can be inserted and removed, and fixed to one end of the light source,
An adapter detachably fixed to the back surface of the tubular member,
In order to fix the adapter in alignment with the tubular member,
An axial alignment member including a hole provided concentrically with the tubular member, a convex portion provided concentrically with the adapter to be inserted into the hole, and a plurality of fixing screws for integrally fixing the tubular member and the adapter. And is provided.

[Action]

The light source is inserted into the front side of the reflector so that the adapter is on the back side of the reflector, and is fixed to the reflector case. As a result, the adapter, that is, the light source, the reflector case, the reflector, and the optical fiber are fixed so that their relative positions are automatically aligned, and the light emitted from the light source or the light reflected by the reflector is reflected by the light. It will be converged and incident on the fiber.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment thereof.

FIG. 1 is a schematic side sectional view showing an entire light source device according to the present invention. A bundle of optical fibers 2 are attached to one side surface of the case 1 with one end located inside the case 1 and the optical axis being horizontal. A reflector 4, a light source 5 and the like are provided facing the end face of the optical fiber 2 at a position slightly deviated from the center in the direction opposite to the optical fiber mounting side on the fixed base 3 provided on the bottom surface of the case 1. A shutter 6 is fixed between the optical fiber 2 and the optical fiber 2 so that the shutter 6 can freely move in and out of the optical path.

Four columns 9 (two of which are shown in the drawing) are erected on the fixed base 3, and a reflector case 41 is fixed thereon. The reflector case 41 has a shape in which a cylindrical portion 41a is connected to one bottom surface side of a rectangular tube, the other bottom surface side is an opening, and this opening is directed to the optical fiber 2 side. The reflector 4 is fixed internally so that the opening of the reflector 4 is located.

The reflector 4 is in the shape of a hemispherical shell, that is, like a concave mirror, and the peripheral portion thereof is fixed to the reflector case 41. A hole penetrating the light source 5 is provided at the center.

FIG. 2 is a side view of the light source 5, FIG. 3 is a perspective view showing a state where the light source 5 is attached to the reflector case cylindrical portion 41a on the back side thereof, and FIG.
The figure is a perspective view of the front side.

The light source 5 is a light source body composed of a tubular mercury xenon lamp or the like.
51, a cathode base 52 fitted to one end thereof, an anode base 54 and a mounting plate 53 fitted to the other end, and the like. Anode base
A disk-shaped adapter 53 made of an insulating material is concentrically fixed to the 54 side.

The cylindrical portion 41a of the reflector case 41 is a short cylinder with a bottom, the inside of the case is open, and the outside (back) side of the case has a bottom plate. As shown in FIG. Hole 41b that allows partial penetration of the base 54 portion,
Also, tap holes 41c for axially fixing the adapter 53 are formed concentrically with respect to the center of the cylindrical portion 41a.

The adapter 53 has a large-diameter and small-diameter boss-shaped cylinder 53 on the front and back of the disk.
b, 53c, and a small-diameter boss-shaped tubular portion 53b is inserted into the hole 41b. And the anode base 54 penetrates in the center and is about 3
Guide holes 53a for inserting the fixing screws 55 are provided at positions equidistantly and concentrically with respect to the center of the adapter. The fixing screw 55 has a threaded portion at its tip end that is screwed into the tap hole 41c, and has a straight portion along the guide hole 53a at its middle portion.

That is, the hole 41b and the tap hole formed in the cylindrical portion 41a described above.
41c, a small-diameter boss-shaped tubular portion which is a convex portion of the adapter 53 fitted in the hole 41b, a fixing screw 55 fitted in the tap hole 41c through the guide hole 53a of the adapter 53, and the like. An axial alignment member that controls relative positioning with the adapter 53 is configured. Further, a banana jack 56 connected to the anode base 54 is attached at an appropriate position. Reference numeral 10 denotes a banana chip fitted in the banana jack 56, which is connected to the anode of the power supply. The banana jack 56 and the anode base 54 are connected by appropriate means. The adapter may be made of metal and the cylindrical portion 41a may be made of an insulating material. In this case, the connection between the banana jack 56 and the anode base is unnecessary. In FIG. 4, 42 is a reflector case.
It is a front plate that covers the opening of 41. The cathode base 52 is connected to the cathode of the power supply via the cable 11. Cable 11
Penetrates through the front plate 42 and is pulled out to the back side.

The light source 5 is inserted into the reflector 4 from the central hole of the light source holder 7 with the cathode base 52 in front, and the adapter 53 is inserted into the cylindrical portion 41a.
The fixing screw 55 is screwed into the tap hole 41c of the cylindrical portion 41a through the guide hole 53a of the adapter 53 and the adapter 53 is axially fixed to the cylindrical portion 41a. . As a result, the straight portion of each fixing screw 55 is processed with high precision so that rattling does not occur in the guide hole 53a of the adapter 53.
When each of the guide holes 53a is inserted into the tap hole 41b of the cylindrical portion 41a, the cylindrical portion 41a and the adapter 53 are concentrically positioned, and the tightening / removal of the fixing screw 55 can be adjusted. Thus, the parallelism between the cylindrical portion 41a and the adapter 53 can be set and the mutual axes can be aligned.

The light source main body 51 is fixed to an adapter 53, and this adapter 53 is fixed to a reflector case 41 whose relative position is fixed to the reflector 4, and the reflector 4 is fixed so that its relative position is aligned with the optical fiber 2. Therefore, only by mounting the light source 5, the position of the light source main body 51 with respect to the optical fiber 2 is aligned and fixed.

FIG. 6 shows another embodiment of the adapter 53 and the reflector case 41a. The cylindrical portion 41a of the reflector case 41 has a peripheral edge extending on the back side so as to form a concave portion 41c concentrically with the center thereof, and the adapter 53 is fitted and fixed in the concave portion. In such a configuration, the cylindrical portion 41
The adapter 53 can be aligned by simply fitting the adapter 53 into the concave portion 41c of a, and a screw (not shown) may be used at least at one position to prevent the shaft from coming off. When both the adapter 53 and the cylindrical portion 41a are made of metal, the insulating sheet 7 is interposed between them as shown in the figure.

The other structure is almost the same as that of the embodiment shown in FIG.
Corresponding parts are given the same numbers and their explanations are omitted.

〔effect〕

As described above, in the light source device according to the present invention, since the light source is positioned from the back side of the reflector case to the front through the tubular member of the reflector case and the reflector, the light source itself can be positioned without directly touching it. The light source can be easily attached and detached, and the light source can be easily and quickly attached to the reflector case. Since the present invention can be performed immediately and the axis alignment work can be performed easily and quickly, the present invention has excellent effects.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a light source device of the present invention, FIG. 2 is a side view of the light source, FIG. 3 is a partial perspective view of the back side thereof, and FIG. 4 is a front perspective view of the same. The figure is a sectional view of the adapter, 6th
The figure is a cross-sectional view of an adapter in another embodiment. 2 ... Optical fiber, 4 ... Reflector, 5 ... Light source, 41
...... Reflector case, 53 …… Adapter

Claims (1)

[Scope of utility model registration request] 1. In a light source device for propagating light emitted from a light source through an optical fiber, a reflector, which is opposed to the optical fiber and whose relative position is fixed and fixed, and a relative position of the reflector, is fixed and fixed. And a tubular member integrally fixed to the back surface of the reflector case and having a hole at the center thereof through which the light source can be inserted / removed, and fixedly aligned at one end of the light source, the back surface of the tubular member. A detachably fixed adapter, and a hole provided concentrically with the tubular member and a hole provided concentrically with the adapter so as to fix the adapter in a state of being aligned with the tubular member. A light source device, comprising: a protruding portion to be inserted, the tubular member, and an axis-aligning member including a plurality of fixing screws for integrally fastening the adapter.