CN2403380Y

CN2403380Y - Photocureable instrument

Info

Publication number: CN2403380Y
Application number: CN 99230208
Authority: CN
Inventors: 过传良; 钱佑; 孙涛; 张国普
Original assignee: Anhui Institute of Optics and Fine Mechanics of CAS
Current assignee: Anhui Institute of Optics and Fine Mechanics of CAS
Priority date: 1999-12-03
Filing date: 1999-12-03
Publication date: 2000-11-01
Anticipated expiration: 2009-12-03

Abstract

The utility model discloses a light solidifying instrument, which overcomes the defects of long time of required irradiation, poor solidifying effect of an irradiated object and inconvenient use in the prior art. On the basis that one side of a light source which is electrically connected with a direct current power supply in a machine shell is provided with a concave reflecting mirror and the other side is provided with light fibre and a light filtration piece, the light source adopts a xenon lamp and a convergent lens assembly is arranged between the xenon lamp and the light fibre. The light solidifying instrument can be used for effectively solidifying solidified resin under the state that the irradiation time of required solidified resin is only 5 seconds. The utility model has the advantages that the time of intense radiation when biological tissues are uncovered on the wave band of bluish violet light can be reduced, the suffering time of patients can be shortened, and use is convenient.

Description

Photocureable instrument

This utility model relates to a kind of Photocureable instrument.

People need go to hospital that tooth is treated reparation because of various tooth diseases.Have easy to use, color and luster is true to nature, the light-cured composite of functional advantage such as good is widely used in the clinical material to use as dental filling of dentistry in recent years, be to solidify under the rayed of 400～500 nanometers because of this resin in spectral region, for this reason, the uv equipment that uses that matches with it also produces immediately, as commercially available photo solidification machine.Halogen tungsten lamp and the optical filter that is enclosed in the concave mirror is housed in the hand-held casing of this photo solidification machine, and an optical fiber stretches out casing at the optical filter place, and the outer dc source of halogen tungsten lamp and casing is electrically connected.Its weak point is that at first long to the irradiation time of the thing that is cured, when curing depth was 5 millimeters, need irradiates light cured composite resin just can make its curing more than 40 seconds; Secondly, because hydrone concentration is big in the oral cavity, time length will influence solidification effect, patient's dehisce for a long time also to have sense of discomfort; Once more, the treatment head is a pistol type, and its volume, weight are all big, and the doctor operates inconvenience.

The purpose of this utility model provides the Photocureable instrument that a kind of irradiation time is short, be convenient to operate.

For achieving the above object, light source one side that this utility model is electrically connected with dc source in casing is that concave mirror, opposite side are on the basis of optical fiber and optical filter, selects light source for use xenon lamp, and be equipped with the plus lens group between xenon lamp and optical fiber.

As to further improvement of the utility model, xenon lamp is sphere or elliposoidal; The plus lens group is by being constituted with 2～4 convex lenss that are provided with on the optical axis; Optical filter places between optical fiber and the bundling optical fiber head; On the close outer surface of optical filter one end of optical fiber, has handle; Dc source is a pulse dc power, and its pulse recurrence frequency is per second 10～300 times, and discharge pulsewidth (half width) is 50～100 microseconds.

After adopting such structure, because xenon lamp has higher light efficiency and strong spectral radiance in the wave band of 400～500 nanometers, be aided with the sphere or elliposoidal xenon lamp and the optics collecting system that are easy to concave mirror optically focused again, can be to be coupled in the optical fiber with the digital aperture angle that meets optical fiber with radiant light less than the requirements at 60 degree angles, after filtering to treating head, be on the bundling optical fiber head, remove to shine cured composite resin, can increase illumination efficiency greatly, after tested, only needed for 5 seconds the hardening time of 5 mm depths, and the accumulative total light radiation time is less than 20 milliseconds in these 5 seconds, this had both improved solidification effect, had reduced biological tissue again and had been exposed under the royal purple optical band by the time of intense radiation, had also shortened patient's the painful time.The employing of handle has made things convenient for doctor's operation.The apolegamy of pulse dc power can make xenon lamp in optimum absorb wavelength 470 nanometers of light-cured composite stronger power density output be arranged, and is beneficial to further improve the absorption efficiency of resin, shortens hardening time, improves solidification effect.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a kind of basic structure sketch map of the present utility model.

As shown in Figure 1, be provided with concave mirror 3, xenon lamp 4 and plus lens group 5 in the casing 2, wherein xenon lamp 4 is electrically connected with pulse dc power 1, and is positioned at the focus place of concave mirror 3; Plus lens group 5 is by constituting with 3 convex lenss that set gradually on the optical axis, will pool the radiant light less than 60 degree (relative optical axis) angles of divergence from the light of xenon lamp 4 and concave mirror 3.One end of optical fiber 6 places the casing 2 of plus lens group 5 outputs place, and the other end connects through optical filter 8 and only changes beam direction, does not change the bundling optical fiber head 9 of beam shape, cover jug 7 on the close optical fiber 6 of these bundling optical fiber head 9 one ends.

During use, only need hand-held handle 7, bundling optical fiber head 9 is aimed at needs solidified light-cured composite, opens the switch of pulse dc power 1, can close switch after 5 seconds, finishes the curing to resin.

Claims

1. Photocureable instrument, light source one side that is electrically connected with dc source in the casing (2) is that concave mirror (3), opposite side are optical fiber (6) and optical filter (8), it is characterized in that described light source is xenon lamp (4), is equipped with plus lens group (5) between xenon lamp (4) and optical fiber (6).

2. Photocureable instrument according to claim 1 is characterized in that xenon lamp (4) is sphere or elliposoidal.

3. Photocureable instrument according to claim 1 is characterized in that plus lens group (5) is by being constituted with 2～4 convex lenss that are provided with on the optical axis.

4. Photocureable instrument according to claim 1 is characterized in that optical filter (8) places between optical fiber (6) and bundling optical fiber head (9).

5. light according to claim 4 encloses the curing instrument, it is characterized in that at light (6) near having handle (7) on the outer surface of optical filter (8) one ends.

6. Photocureable instrument according to claim 1 is characterized in that dc source is pulse dc power (1), and its pulse recurrence frequency is per second 10～300 times, and the discharge pulsewidth is 50～100 microseconds.