JPH0511523Y2 - - Google Patents

Description

[Detailed explanation of the idea] 【Technical field】

The present invention relates to a technique for aligning the optical axis of a reflector of a lamp block with the center of the optical fiber in an optical device for extracting light generated by a lamp block and guiding it to a predetermined location using an optical fiber.

[Background technology]

Conventionally, as shown in FIGS. 7 and 8, the optical fiber 1 is held by a holding metal fitting 2 fixed to the main body casing 9, while the optical fiber 1 is rotatably provided in the opening 16 of the main body casing 9. A lamp block 6 equipped with a reflector 3 and a lamp 5 is attached to the door 17, and when replacing the lamp 5, the door 17 is opened and the lamp block 6 is taken out from the main casing 9 to replace the lamp 5. Ta. Therefore, several adjustment mechanisms were required to accurately align the optical axis of the reflecting mirror 3 with the center of the optical fiber 1. Each time the lamp 5 is replaced, it is necessary to adjust the adjustment mechanism to align the optical axis of the reflecting mirror 3 with the center of the optical fiber 1.

[Purpose of invention]

The present invention was developed in view of the above-mentioned technical background, and its purpose is to make it possible to easily position the reflector without using an adjustment mechanism, and to facilitate lamp replacement. It is to make it.

[Disclosure of invention]

The holding device for the reflective mirror of the present invention consists of an optical fiber 1
A holding fitting 2 that holds the tip of the reflector 3 is provided with a positioning fitting 4 for positioning the peripheral edge of the tip of the reflecting mirror 3, and a lamp 5 is attached to the reflecting mirror 3 to constitute a lamp block 6. The tips of the lock handle 7 at both ends are rotatably supported on the outside of the lock handle 7, and one end of a spring 8 stretched between the lock handle 7 and the lamp block 6 is connected to the lamp block. 6, and a ring fitting 16 provided at the other end of the spring 6 is mounted so as to be slidable along the lock handle 7 by the spring force of the spring, and is further connected to the positioning fitting 4. The lamp block 6 is removably fitted to the positioning fitting 4 facing the lock handle 7 by rotating the lock handle 7 around pivot points between the outside of the lamp block and the tips at both ends of the lock handle 7. By rotating the lock handle 7 and loosening the spring 8, the reflector 3 (lamp block 6) can be easily removed from the positioning bracket 4 and the lamp 5 replaced. By fitting the peripheral edge of the tip into the positioning fitting 4 and tightening the spring 8 by turning the lock handle 7, the reflector 3 is removed.
can be positioned on the positioning metal fitting 4, and by extension on the holding metal fitting 2, and the optical axis of the reflecting mirror 3 and the center of the optical fiber 1 can be reliably aligned. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A cylindrical holding fitting 2 that holds the end of the optical fiber 1 is inserted into the opening 1 of the main body casing 9 with the main body casing 9 sandwiched between the flange 10 and the nut 11.
2, the end of the optical fiber 1 is inserted into the center, and the end surface of the optical fiber 1 is exposed toward the inside of the main body casing 9. A cylindrical positioning fitting 4 is fixed to the tip of the holding fitting 2 with a screw 13. A heat dissipation opening 14 is bored around the positioning fitting 4, and an annular portion 15 is provided at the tip for gripping the periphery of the tip of the reflecting mirror 3 and positioning the center (optical axis). Further, a horseshoe-shaped lock handle 7 as shown in FIG. 2 is rotatably attached to the outer surface of the positioning fitting 4. A spherical reflecting mirror 3 is provided at the front of the lamp block 6, and a lamp 5 is positioned at the center of the reflecting mirror 3. A spring 8 is stretched between the rear end of the lamp block 6 and both sides of the lock handle 7, respectively. This spring 8 is fixed on the lamp block 6 side, but on the lock handle 7 side, it is made to slide along the lock handle 7 by means of a ring 16. Then, as shown in FIG. 1, the peripheral edge of the tip of the reflector 3 is fitted into the annular portion 15 of the positioning metal fitting 4, and the lock handle 7 is moved toward the holding metal fitting 2 as shown in FIG. 1 or 2. The lamp block 6 is held in the positioning fitting 4 by the elastic force of the spring 8, which is held by the elastic force of the spring 8. The reflecting mirror 3 is positioned by the annular part 15 of the positioning fitting 4, and the optical axis of the reflecting mirror 3 and the center of the optical fiber 1 are aligned, so that the light emitted from the lamp 5 is reflected by the reflecting mirror 3. The light is then focused onto the end face of the optical fiber 1. When replacing the lamp 5, as shown in FIG. 3, when the lock handle 7 is turned toward the lamp block 6, the ring 16 of the spring 8 moves toward the free end of the lock handle 7, and the spring is replaced. 8 is loosened, the lamp block 6 is easily removed from the positioning fitting 4, and the lamp 5 can be replaced. After replacing the lamp 5, fit the reflector 3 into the positioning bracket 4 to position it, and turn the lock handle 7 toward the holding bracket 2 as shown in FIG. The lamp block 6 is fixed to the positioning fitting 4 by being pulled while moving toward the supporting end side. When the lock handle 7 is turned all the way as shown in Figure 5, the lock handle 7
As shown by the arrow in FIG. 6, a moment is applied by the spring 8 in the direction of preventing the lock handle 7 from returning.
It is designed so that it will not come off.

[Effect of the idea]

As described above, the present invention provides a holding fitting that holds the tip of an optical fiber with a positioning fitting for positioning the periphery of the tip of the reflecting mirror, and also attaches a lamp to the reflecting mirror to form a lamp block. Further, the tips of both ends of a lock handle are rotatably supported on the outside of the positioning metal fitting, and one end of a spring stretched between the lock handle and the lamp block is connected to the lamp block. , a ring provided at the other end of the spring is mounted so as to be slidable along the lock handle by the spring force of the spring, and a ring is provided on the outside of the positioning fitting and on both ends of the lock handle. By rotating the lock handle about the pivot point with the tip of the lamp block, the lamp block is removably fitted to the positioning metal fitting. By loosening it, you can easily remove the reflector (lamp block) from the positioning bracket and replace the lamp, and after replacing the lamp, fit the tip of the reflector into the positioning bracket and tighten the spring by turning the lock handle. This makes it easy to attach a reflector (lamp block), and the reflector is positioned by the positioning bracket attached to the holder, and by extension, by the holder, so that the optical axis of the reflector and the center of the optical fiber are aligned. There is an advantage that it is possible to reliably match the .

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a perspective view of the same as the above, FIGS. 3 to 5 are explanatory views of the same as the above, FIG. 6 is an explanatory view of the same as the above, FIGS. 7 and 8 are explanatory views of the conventional example, 2 is a holding metal fitting, 3 is a reflecting mirror, 4 is a positioning metal fitting, 5 is a lamp, 6 is a lamp block, 7 is a lock handle, and 8 is a spring.

Claims (1)

[Scope of utility model registration request] A holder for holding the tip of the optical fiber is provided with a locating clasp for positioning the periphery of the tip of the reflecting mirror, and a lamp is attached to the reflecting mirror to form a lamp block, and a lamp block is provided on the outside of the locating clasp. , the ends of both ends of a lock handle are rotatably supported, one end of a spring stretched between the lock handle and the lamp block is connected to the lamp block, and the other end of the spring is connected to the lamp block. A ring provided on the lock handle is mounted so as to be slidable along the lock handle by the spring force of the spring, and a pivot point between the outside of the positioning metal fitting and the tips at both ends of the lock handle is mounted. A holding device for a reflecting mirror, wherein the lamp block is removably fitted in opposition to the positioning fitting by rotating the lock handle about the fulcrum.