JP2002028169A - Lighting device for dentistry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device securely capable of obtaining light of a high luminance necessary for a light transmission method while restricting power consumption, and realizing a cordless and handy type device. SOLUTION: A light guide probe 7 for introducing light from a light source 1 to be outgoing is provided with a light source side converging part 12 having a reflection surface 12A formed in a conical form to converge light radiated from the light source 1, and a gently curved light guide part 13 having a reflection surface 13A extended at the tip of the converging part 12, and formed in a cylindrical form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a dental checkup,
For the purpose of illuminating the oral cavity and visually inspecting the presence or absence of dental caries (also referred to as tooth decay) (visual recognition), examination (transmission inspection) by the transmitted light method is to ensure that the initial caries state, which is often overlooked, can be inspected more reliably. The present invention relates to a dental illuminator having a light source for transmission capable of locally illuminating an irradiation site with high brightness.

[0002]

2. Description of the Related Art In general, as a caries examination method, for example, in a doctor's office or the like, various methods such as an X-ray examination and an impedance examination are used in addition to a visual examination using an illuminator attached to a chair. The method of examining with the illuminator attached to the chair illuminates the teeth from the outside,
By checking the state of the outer surface of the illuminated tooth, it is determined whether or not the tooth is carious. However, the initial caries state refers to the phenomenon in which calcium and phosphorus are dissolved from the inside of the enamel by the acid. The outside looks healthy, but the inside part is scaly (also called demineralization).
As described above, it is difficult to determine whether or not a tooth is carious simply by looking at the state of the outer surface of the tooth as described above. In addition, it was difficult to determine whether or not the tooth was carious at a portion adjacent to the tooth, which is hard to see even visually. In addition, the method of screening by X-rays is not only a problem of measures to reduce exposure to radiation and a problem of not being able to rapidly examine a large number of people, but also a part that cannot be observed (for example, a part where teeth overlap or a metal part of a prosthesis is shadowed). Etc.). Therefore, as a solution to the above-mentioned inconvenience, light from a dental illuminator is irradiated to a tooth or a portion adjacent to the tooth, and transmitted light passing through the inside of the tooth is observed. In recent years, examination (visual examination) by the transmitted light method for judging has been performed. Specific examples thereof include those disclosed in JP-A-8-89478. This is an optical fiber as a light incident means for causing light guided through a cord from a light emitting unit provided in the main body to enter the oral cavity, and light from this optical fiber is applied from one of the teeth, and light transmitted through the tooth It consists of an image receiving unit with a camera that captures the light, and a monitor device that captures the image captured by the camera.The light from the light emitting unit is guided to the optical fiber through a cord, and the light is emitted from one end of the tooth from the tip of the optical fiber, and the tooth The camera is configured to capture the light transmitted through the camera as an image and project the image on a monitor device.

[0003]

According to the above construction, light is emitted from the light emitting portion provided in the main body portion and the long optical fiber provided for guiding and irradiating the light from the light emitting portion. Irradiation means that not only long optical fibers connected to the light-emitting unit become a hindrance, but also the whole device is large, which leads to a rise in cost. Met. In addition, since the light from the light emitting section is guided by a long optical fiber, light loss is large, and a large-capacity light emitting section is required to obtain light required for the transmitted light method, and power consumption is reduced. In addition to the increase in the size of the device, the size of the device, the cost, and the use of the device are more remarkably deteriorated.

[0004] In view of the above situation, the present invention seeks to solve the problem of providing high-brightness light required for the transmitted light method.
An object of the present invention is to provide a dental illuminator that can be reliably obtained while suppressing power consumption and that can be used in a cordless and handy type.

[0005]

According to the present invention, there is provided a dental illuminator comprising a light source, and a light guide probe for introducing and emitting light from the light source.
The light guide probe has a light-collecting portion on the light source side having a reflection surface formed in a conical shape or a pyramid shape for condensing light emitted from the light source, and extends to a tip of the light-collecting portion. And a reflecting surface formed in a columnar shape or a polygonal shape, and a light guide portion that is gently curved. By providing the light guide probe with a light condensing part as described above, not only can a special light emitting part as in the related art be unnecessary, but also by changing the angle and length of the light converging part, The range of light collection, that is, the area of the leading end can be set freely,
Even with a single light source, it is possible to secure an irradiation amount (brightness, etc.) of light required for inspection. In addition, by forming the curved portion into a columnar shape or a polygonal column shape, the curved portion can be curved gently (smoothly) while maintaining the same outer diameter in the longitudinal direction. The reflected light can be surely reflected by the reflection surface, and the light that can leak to the curved portion can be reduced to increase the light that can reach the distal end surface (output surface) of the light guide probe.

By using a single lamp having an elliptical or circular reflecting mirror as the light source, light other than the light radiated forward from the lamp, for example, irradiating the lamp to the left and right, up and down, or the back surface Light can be reflected by a reflecting mirror and introduced into the light guide probe, and even with a single lamp, the amount of light emitted from the light guide probe per unit area (brightness, etc.) can be increased. Can be done.

[0007] A light guide is provided by providing a light-collecting portion on the front end side having a conical or pyramid-shaped reflecting surface for condensing light from the light guide portion at the front end of the light guide portion. It is possible to further increase the irradiation amount (luminance and the like) of the light irradiated from the probe per unit area.

The light source is provided in a casing, and the light guide probe can be freely inserted and removed from one end of the casing, so that the light guide probe can be easily and quickly exchanged with a new light guide probe or another type of light guide probe. In addition, the light guide probe can be used as a light for general illumination with the light guide probe removed.

[0009] An insertion portion of the light guide probe can be inserted into one end of the casing, and a cylindrical insertion portion having an inner diameter smaller than an outer diameter of the insertion portion is provided. One or more slits are formed in a direction substantially along the insertion direction of the light guide probe. Therefore, by inserting the insertion portion of the light guide probe into the insertion portion provided at one end of the casing, the insertion portion can be allowed to move in the radially enlarged direction by the slit, and can be guided to one end of the casing. The optical probe can be inserted, and the light guide probe can be securely held at one end by a restoring force at which one end returns to the state before the light guide probe was inserted.

[0010] By forming the slit notch in a direction intersecting the radiation passing through the center of the insertion portion,
Light in the direction passing through the center of the light guide probe from the outer surface of the insertion portion of the light guide probe, that is, light that escapes radially outward can be blocked by the slit, and light loss due to the formation of the slit can be reduced. Can be supercharged.

By forming the light entrance surface of the light guide probe into a spherical surface, it is possible to narrow down the light incident on the light entrance surface and increase the light that can be guided by the light guide probe.

By forming the light exit surface of the light-collecting portion on the front end side into a spherical or hemispherical shape, light emitted from the light-collecting portion on the front end side can be condensed, and the irradiation light can be made stronger. Can be something. In the case where the light emitting surface is formed of a flat surface, light may be dispersed, a ring-shaped shadow may be formed, and depending on the distance from the light emitting surface, inconveniences such as a filament of a lamp may appear. . Moreover, since there is no edge, even if it hits a gum etc., it will not be damaged.

By forming the light guide probe from a transparent resin, the light guide probe can be easily obtained. If a large quantity is manufactured, it can be replaced and used as a disposable item at each medical examination.

[0014] The light source, a battery or a storage battery for supplying power to the light source, a casing for accommodating them, and the light source turned on.
A light guide probe that can be inserted into the tubular portion at the tip of the penlight by configuring the light guide probe to be inserted into the tubular portion at the tip of a general-purpose penlight including a switch or the like for performing an OFF operation; A dental illuminator can be configured only by manufacturing.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 (a) and 2 (b)
A dental illuminator that is advantageous for detecting early caries is shown. This dental illuminator includes a single xenon lamp (a lamp in which xenon gas is sealed) 1 as a light source, a dry battery 2 for supplying power to the xenon lamp 1, a casing 3 for accommodating these, and turning on the xenon lamp 1. -OF
A general-purpose penlight 5 including a rotary (push button type, slide type, etc.) switch 4 for F operation
And a light guide probe 7 that is inserted into the cylindrical portion 6 at the tip of the penlight 5 to introduce and emit light from the xenon lamp 1. 20 shown in the figure is
It is a clip that is inserted into a breast pocket or the like for pinching and fixing, and may be omitted. The dental illuminator is of a cordless type (handy type) that is particularly advantageous for dental examinations outside the clinic.
For the purpose of facilitating the operation, the dry battery may be provided as a separate portable unit and connected to the light source unit by a cord. Further, a cord type that can use an alternating current may be used. The type that can use the alternating current is inferior to the cordless type in terms of handling, but has the advantage of eliminating the need for replacement work due to battery exhaustion. Other than the dry cell,
Various storage batteries (secondary batteries) such as a lead storage battery, an alkaline storage battery, and a cadmium storage battery may be used. Also, here, the use of the general-purpose penlight 5 can be advantageous in terms of manufacturing, but it may be configured by a dedicated one.

The light source is preferably a xenon lamp 1 having high luminance and a wavelength range close to natural light, but may be a krypton lamp or a light emitting diode (LED). Note that the halogen lamp is not suitable for a cordless type (handy type) because the calorific value and the power consumption are larger than those of the lamp.
Use is not a problem for cord types that can use AC. As shown in FIGS. 2A and 2B, the base end of the xenon lamp 1 on the lead wire side is inserted into the recess at the distal end of the holder 8 in the vertical and horizontal directions from the xenon lamp 1. By providing the reflecting mirror 9 having an elliptical cross section for reflecting the emitted light and guiding the light to the light guide probe 7, the amount of light emitted from the xenon lamp 1 can be collected without waste, and the power consumption is reduced. Although it is possible, the brightness can be increased rationally. The reflecting mirror 9 may deposit silver, aluminum, or the like on the surface of the concave portion at the tip of the holder 8,
An elliptical mirror formed in advance may be attached to the holder 8 with an adhesive or the like. Although the reflecting mirror 9 has an elliptical shape, the reflecting mirror 9 may be formed in a spherical shape according to the length of the light guide probe 7 or the like.

As shown in FIG. 3, the light guide probe 7
Is removably inserted into the insertion portion 10 which is the cylindrical portion 6 provided at one end of the casing 3, and introduces light from the xenon lamp 1 and light reflected by the reflecting mirror 9. Part 11 and a reflecting surface 1 formed at a predetermined angle α-cone (cone) from the tip of the insertion part 11
2A, a light-collecting portion 12 on the light source side, and a reflecting surface 13 formed at a tip of the light-collecting portion 12 and formed in a cylindrical shape.
A, and a light guide 13 that is gently curved at a predetermined angle θ with a radius of curvature R, and a cone for condensing light from the light guide 13 at the tip of the light guide 13. And a light-collecting portion 14 on the distal end side having a reflecting surface 14A formed in a shape, and these portions are integrally formed of a colorless (or, in some cases, colored) transparent resin. The light guide 1
3 is the first straight portion 1 located on the light collecting portion 12 side.
3A, a curved portion 13B gently curved from the tip of the first straight portion 13A at a predetermined angle θ with a radius of curvature R as described above, and a second straight extending to the tip of the curved portion 13B. This is optimal in that light is guided while being surely reflected (reflected entirely) by the reflection surface 13A, but is implemented without one or both of the two straight portions 13A and 13C. You may. Also, the reflection surface (strictly, reflection on the inner wall surface)
12A, 13A and 14A are formed by polishing the surface (external surface) to a high degree in order to reflect light, but silver (Aluminum), aluminum,
Another dielectric multilayer film or the like may be deposited without impairing the surface polishing state as a reflection function. Also, the reflection surface 1
The 2A, 13A, and 14A are preferably formed in a conical shape, but may be formed in a pyramid shape or the like. Also, in FIG. 3, the incident angle θi of the incident light incident on the reflecting surface 12A (the reflecting surface 1A).
The reflection is repeated so that the angle formed by the normal line set at 2A and the reflection angle θr of the light reflected by the reflection surface 12A becomes the same, and the light is emitted from the front end of the light condensing section 14.

The insertion portion 10 is made of a resin having elasticity (a metal or the like may be used if it has elasticity). The insertion portion 10 accommodates the holder 8 and is screwed and fixed to one end of the casing 3. It comprises a mounting portion 10A and a distal end portion 10B integrally formed at the distal end of the mounting portion 10A and having a tapered surface that tapers toward the distal end portion. As shown in FIG. 2B, the insertion portion 10
Protruding inward from the inner surface of the distal end of the distal end 10B
C, the inner diameter R1 of the claw portion 10C is set to be smaller than the outer diameter R2 of the insertion portion 11 of the light guide probe 7, and the light guide probe 7 is attached to the distal end portion 10B.
A plurality of slits 10S are formed in a direction substantially along the insertion direction, that is, in the longitudinal direction of the penlight 5. Therefore,
Insertion section 1 of light guide probe 7 at tip 10B of insertion section 10
1 causes the distal end portion 10B to be enlarged in diameter, and after insertion, the distal end portion 10B is clamped by the claw portion 10C due to the elastic restoring force in the diameter reducing direction, so that the light guide probe 7 comes off. To be able to block. Reference numeral 15 shown in FIGS. 2A and 2B denotes a protruding piece 1 for making the minus side of the dry battery 2 conductive through the casing 3.
5A is a cylindrical negative-side conductive portion provided with one end at 5A,
The negative terminal 1 of the xenon lamp 1 is connected to the conducting portion 15.
The ring-shaped conductive plate 16 to which the tip of A is welded is made conductive through the coil spring 17. The positive side of the dry battery 2 is the positive side terminal 1 of the xenon lamp 1.
The leading end of B comes into contact with the pin 18 in the contact state and is in a conductive state.

As shown in FIG. 4, the slit 10S is cut out from a direction intersecting with the radiation X passing through the center of the insertion portion 10, and the insertion portion 1 of the light guide probe 7 is formed.
The light in the direction passing through the center of the light guide probe 7 from the outer surface of the light guiding probe 7, that is, the light that escapes radially outward can be blocked by the slit 10S. The slit 10
The angle between S and the radiation passing through the center of the insertion portion 10 may be other than the angle shown in the drawing as long as light does not leak outward.

As shown in FIG. 3, the light incident surface 11A of the insertion portion 11 of the light guide probe 7 is formed into a spherical surface, so that the light incident on the light incident surface 11A is narrowed to the light guide probe 7. To increase the light that can be guided. Further, by forming the light exit surface 14B of the light condensing part 14 on the distal end side of the light guide probe 7 into a spherical or hemispherical shape, the light emitted from the light condensing part 14 on the distal end side has an angle β in the figure. And the light is condensed, and the irradiation site H
Irradiating light with higher intensity. Further, it is also possible to use a probe in which various colors having light transmissivity such as blue, green or red are applied to the spherical surface of the light incident surface 11A or a probe in which various films are adhered to the light incident surface 11A according to various purposes. A probe that can obtain a wavelength can also be used.

In the dental illuminator thus constructed, as shown in FIG. 9, the light exit surface 14B of the light condensing part 14 on the tip side of the light guide probe 7 is located on the back side of the tooth D and the two teeth D, D
By observing the light C transmitted through the teeth in a state where they are brought into contact with each other or located at a position close to each other, it is possible to surely grasp whether or not the caries (cavities) are present. . In addition to visually observing the light C transmitted through the teeth, an imaging unit such as a CCD camera and a monitor for displaying information from the imaging unit may be provided. Also, as shown in FIG. 1, if a medical examination is performed using a bag-shaped disposable transparent film cover 19 for covering the dental illuminator, the dental illuminator can be replaced simply by replacing the transparent film cover 19 for each examiner. There is an advantage that the light guide probe 7 does not need to be cleaned. The high heat generated from the xenon lamp 1 is not transmitted to the light guide probe 7 and does not melt the transparent film cover 19.

The details of the insertion portion 10 will be described with reference to FIG.
(A), (b), as shown in FIGS. 3, 5 and 6, the insertion position of the light guide probe 7 is regulated while receiving the step 11D formed in the insertion portion 11 of the light guide probe 7. An annular protruding portion 10T for receiving the supporting portion 11E extending toward the lamp from the step portion 11D is formed integrally with the inner surface of the insertion portion 10. The projection 10T and the claw portion 10C are configured to contact and support two points in the longitudinal direction of the light guide probe 7, thereby preventing the light guide probe 7 inserted into the insertion portion 10 from rattling. So that it can be prevented. Then, the circumferential direction 4 of the protrusion 10T
A groove 10M having a length communicating with the slit 10S is formed at a location to discharge the hot air from the groove 10M to the outside through the slit 10S for the purpose of preventing the hot life generated by the xenon lamp 1 from shortening the lamp life. Is possible, but it is not necessary. Although four grooves 10M are formed to discharge the hot air of the xenon lamp 1 to the outside, an annular gap (space) is formed between the light guide probe 7 and the insertion portion 10, and the gap (space) is formed. From slit 1
It may be configured to discharge to the outside through OS.

FIGS. 7A and 7B show the dental illuminator.
Alternatively, it may be configured as shown in FIGS. 8 (a) and 8 (b). 7A and 7B, the light guide probe 7 and a normal (commercially available) penlight 5 are integrated via a rubber holder 21. The rubber holder 21 includes an annular large-diameter penlight-side cylindrical portion 21 </ b> C fitted on the outer surface of a resin-made tip portion 22 screwed into the casing 3 of the penlight 5, and the light guide probe 7.
An annular small-diameter light guide probe-side cylindrical portion 21A mounted on the outer surface of the insertion portion 11 on the light receiving end side of the light receiving end;
1C, and a connecting and holding portion 21B for holding the light guide probe 7 so as not to come off by coming into contact with the flange portion 11F formed at the light receiving end of the light guide probe 7. I have. Accordingly, the light collecting portion 14 on the tip side of the light guide probe 7 is moved from the end opening of the penlight side cylindrical portion 21C of the rubber holder 21 to the position where the flange portion 11F of the light guide probe 7 contacts the connection holding portion 21B. After the insertion, the penlight-side cylindrical portion 21C of the rubber holder 21 is fitted (mounted) on the outer surface of the tip portion 22 of the penlight 5 to constitute a dental illuminator. In other configurations that have not been described, the only difference is the shape of the tip end portion 22 of the penlight 5 shown in FIG. 7A and the shape of the insertion portion 10 of the penlight 5 shown in FIG. Since the configuration is the same, the same reference numerals are given and the description is omitted. FIGS. 8A and 8B
In this case, the holder 23 for externally fitting the light guide probe 7 to the distal end portion 22 of the penlight 5 is formed integrally with the insertion portion 11 of the light guide probe 7 so that the rubber holder 21 and the penlight 5 can be inserted. There is an advantage that the shape change of the part 10 becomes unnecessary. The holder portion 23 includes a plurality of notches 23A in a direction along the holder portion insertion direction,
A claw 23B protruding inward is provided on the inner surface of the opening side end. Therefore, by inserting the tip portion 22 of the penlight 5 into the holder portion 23, the holder portion 23 is deformed into an outwardly expanding shape, and after the insertion, the tip portion 22 is resiliently restored by the claw 23B by the elastic restoring force of the holder portion 23. We are trying to pinch. As shown in FIG.
By penetrating into the opening of the distal end portion 22 of the light guide probe 7, the light guide probe 7 can be easily displaced with respect to the penlight 5. The penlight 5 shown in the figure is a normal (commercially-used) penlight as in FIG. 7A. The other components not described are the same as those described above, and thus are denoted by the same reference numerals and description thereof will be omitted.

[0024]

According to the first aspect of the present invention, by providing the light guide probe with a light condensing part, not only a special light emitting part as in the related art can be made unnecessary, but also the angle at which the light condensing part is narrowed, and the like. By simply changing the length, the range of light collection, that is, the area of the leading end can be freely set, and even with a single light source, the irradiation amount (brightness, etc.) of the light required for inspection can be secured. be able to. Therefore, by configuring the light guide probe as described above, the required brightness can be reliably obtained while suppressing power consumption, and the cordless and handy type dental illuminator is enabled. Can be provided. Moreover, by forming the bent portion into a columnar shape or a polygonal column shape, the outer diameter of the portion can be made the same, and the portion can be smoothly bent. Therefore, of the light introduced into the bent portion, To improve the brightness by increasing the amount of light that can reach the distal end surface of the light guide probe by reliably contacting and reflecting at an angle at which the light can be reflected on the reflective surface of the inner wall of the light guide probe. Can be.

According to the second aspect, by using a single lamp with an elliptical or circular reflecting mirror as a light source, light other than the light radiated forward from the lamp, for example, left and right or left of the lamp, The light applied to the upper, lower, or back surface can be reflected by a reflecting mirror and introduced into the light guide probe. Even with a single lamp, the amount of light emitted from the light guide probe per unit area (Brightness, etc.) can be increased, and a dental illuminator more advantageous for inspection can be obtained.

According to the third aspect of the present invention, a light-collecting portion on the front end side having a reflecting surface formed in a conical or pyramidal shape for condensing light from the light-guiding portion is provided at the front end of the light-guiding portion. Thereby, the irradiation amount (such as luminance) per unit area of the light emitted from the light guide probe can be further increased.

According to the fourth aspect, the light source is provided in the casing, and the light guide probe can be freely inserted and removed from one end of the casing, so that the light guide probe can be connected to a new light guide probe or another type of light guide probe. In addition to easy and quick replacement, the light guide probe can be used as a light for general illumination with the light guide probe removed, which is advantageous in terms of handling.

According to the fifth aspect, it is possible to allow the slit to allow the one end to move in the radially enlarged direction with the insertion of the light guide probe into one end of the casing. The light guide probe can be securely held at one end by a restoring force that tries to return to the state before the light guide probe is inserted at one end, and the light guide probe can be quickly inserted into and removed from the casing. And a special holding mechanism or the like can be eliminated.

According to the sixth aspect, the slit is cut out in a direction intersecting with the radiation passing through the center of the insertion portion so that the slit passes from the outer surface of the insertion portion of the light guide probe to the center of the light guide probe. Light, that is, light that escapes radially outwards, can be blocked by the slit, light loss due to the formation of the slit can be prevented in a supercharged manner, and the disadvantage of providing the slit is eliminated can do.

According to the seventh aspect, by forming the light incident surface of the light guide probe into a spherical surface, it is possible to narrow down the light incident on the light incident surface and increase the light that can be guided by the light guide probe. it can.

According to the eighth aspect, the light emitted from the light-collecting portion on the front end can be collected by forming the light-emitting surface of the light-collecting portion on the front end into a spherical or hemispherical shape. ,
Irradiation light can be made stronger. Further, since there is no edge, even if it is applied to a gum or the like, it is not damaged and is advantageous in use (handling surface).

According to the ninth aspect, by forming the light guide probe from a transparent resin, the light guide probe can be easily obtained, which is advantageous in terms of manufacturing. In addition, if a large number of products can be manufactured, they can be supplied at a low cost, so that they can be treated as disposables, and they can be washed and used after examination, which is advantageous in hygiene.

According to the tenth aspect, the light source, a battery or a storage battery for supplying power to the light source, a casing for housing these,
The light guide probe can be inserted into the cylindrical portion at the tip of a penlight by inserting the light guide probe into the cylindrical portion at the tip of a general-purpose penlight including a switch for turning on and off the light source. A dental illuminator can be configured only by manufacturing a probe, which is advantageous in terms of manufacturing.

[Brief description of the drawings]

FIG. 1 is a side view of a dental illuminator.

FIGS. 2A and 2B are partially sectional side views showing a light guide probe attaching / detaching structure, in which FIG. 2A shows a state in which the light guide probe is mounted, and FIG. 2B shows a state in which the light guide probe is removed. I have.

FIG. 3 is a side view of the light guide probe.

FIG. 4 is a front view of the dental illuminator with the light guide probe removed.

FIG. 5 is a vertical sectional side view showing a mounting portion of a xenon lamp.

FIG. 6 is a sectional view taken along line aa in FIG. 5;

7A and 7B show another dental illuminator, wherein FIG. 7A is a side view partially omitted, and FIG. 7B is a perspective view of a main part.

8A and 8B show another dental illuminator, in which FIG. 8A is a side view partially omitted, and FIG. 8B is a perspective view of a main part.

FIG. 9 is a perspective view showing a state in which the distal end of a dental illuminator is arranged on the back side of a tooth to observe transmitted light.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Xenon lamp 2 Dry battery 3 Casing 4 Switch 5 Penlight 6 Cylindrical part 7 Light guide probe 8 Holder 9 Reflector 10 Insertion part 10A Mounting part 10B Tip part 10C Claw part 10S Slit 10M Groove 10T Projection part 11 Insertion part 11A Light Incident surface 11D Step 11E Support 11F Flange 12 Light source side light condensing part 12A Reflecting surface 13 Light guide 13A First straight part 13B Curved part 13C Second straight part 14 Front light condensing part 14A Reflecting surface 14B Light Emission surface 15 Conducting part 15A Projection piece 16 Ring-shaped conductive plate 17 Coil spring 18 Pin 19 Transparent film cover 20 Clip 21 Rubber holder 21A, 21C Tube part 21B Connection holding part 22 Tip 23 Holder 23A Notch 23B Claw A Light H Irradiation area R1 Inside diameter R2 Outside diameter

Claims (10)

[Claims] 1. A light source comprising: a light source; and a light guide probe for introducing and emitting light from the light source, wherein the light guide probe has a conical or conical shape for condensing light emitted from the light source. A light-collecting part on the light source side having a reflecting surface formed in a pyramid shape or the like, and having a reflecting surface formed in a columnar shape or a polygonal column shape while extending to the tip of the light collecting portion, and gently A dental illuminator comprising a curved light guide. 2. The dental illuminator according to claim 1, wherein a single lamp with an elliptical or circular reflecting mirror is used as the light source. 3. A light-condensing portion provided at a front end of the light-guiding portion and having a conical or pyramid-shaped reflecting surface for condensing light from the light-guiding portion. Item 2. A dental illuminator according to item 1. 4. The dental illuminator according to claim 1, wherein the light source is provided in a casing, and the light guide probe is configured to be freely inserted and removed from one end of the casing. 5. An insertion part for inserting the light guide probe into one end of the casing, and a cylindrical insertion part having an inner diameter smaller than an outer diameter of the insertion part. 5. The dental illuminator according to claim 4, wherein the portion is formed with one or more slits in a direction substantially along the insertion direction of the light guide probe. 6. The dental illuminator according to claim 5, wherein the slit is cut out from a direction intersecting with the radiation passing through the center of the insertion portion. 7. The dental illuminator according to claim 1, wherein the light incident surface of the light guide probe is formed as a spherical surface. 8. The dental illuminator according to claim 3, wherein the light exit surface of the light-collecting portion on the tip side is formed in a spherical or hemispherical shape. 9. The dental illuminator according to claim 1, wherein the light guide probe is formed of a transparent resin. 10. The light guide to a cylindrical portion at the tip of a penlight comprising the light source, a battery or a storage battery for supplying power to the light source, a casing for accommodating them, a switch for turning on and off the light source, and the like. The dental illuminator according to claim 1, wherein the dental illuminator is configured by inserting a probe.