JP3304028B2 - Jewelry pattern observation instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument for observing a pattern generated from a gem which has been irradiated with light.

[0002]

2. Description of the Related Art Conventionally, 4C-1 which indicates the quality of diamond.
One of the diamonds with excellent cut elements (proportion, symmetry, etc.)
No. 68, Japanese Patent Publication No. 6-103269,
As shown in JP-A-174648 and JP-A-6-213818, by irradiating a diamond with two or more types of light under certain conditions, a heart shape or arrow (arrow) corresponding to the color of the light is irradiated. ) Shape pattern is generated.

That is, a diamond 51 is placed on a horizontal plane such that the upper surface of a pavilion 52 is horizontal, and a light 56 of a certain color whose incident angle is restricted (a two-dot chain line in FIG. 7) and a color different from the light 56 When the diamond 51 is viewed from above with a dedicated tool, the incident light is reflected from the side surface as shown in FIG. Get out of
When the light entering from above is reflected on the diamond 51 and exits from above, the heart-shaped pattern shown in FIG. 8A or the arrow-shaped pattern shown in FIG. 8B is seen. Can be done.

[0004] As an instrument for confirming the diamond pattern, Japanese Patent Publication No. 6-103268, Japanese Patent Publication No. 6-103269, and Japanese Patent Application Laid-Open No. Hei 6-174648 have been proposed.
And Japanese Patent Application Laid-Open No. Hei 6-213818 are known. This corresponds to the color of the inner surface of the lower cylinder, etc. after part of the external light incident on the lower cylinder from the upper opening is directly radiated to the diamond, and the other part is reflected on the inner surface of the lower cylinder, etc. The pattern is seen by irradiating the diamond with light having a different color.

[0005]

In the above-mentioned conventional apparatus for checking a pattern, the portion for taking in external light into the lower cylindrical portion is limited to only the upper or lower opening portion. Poor light capture efficiency. For this reason, there is a disadvantage that the pattern cannot be clearly seen depending on the brightness of the observation place, and the observation environment of the pattern is limited. Also, depending on the color of the inner surface of the lower cylinder portion, light reflection is poor, and the color of the diamond pattern does not correspond to the color of the inner surface of the lower cylinder portion. In other words, there is also a drawback that the color of the inner surface of the lower cylinder and the like is limited by the light reflection efficiency and the like because the efficiency of taking in external light is poor.

On the other hand, in an environment where the pattern cannot be clearly seen, the above-mentioned publication uses a means for positively taking in light into the lower cylinder portion by using a lighting device or a reflecting plate having a mirror surface or the like. However, using a light source such as a lighting device not only complicates the structure and leads to an increase in cost, but also has a problem that the place of use is limited and the probability of failure increases. Further, even when a reflection plate is used, the disadvantages of a complicated structure and an increase in cost cannot be avoided.

[0007]

According to the present invention, there is provided an instrument for observing a pattern of a jewel according to the present invention, which has a transparent hole 9 for observation therein and an eyepiece having a reflective surface 2a on the back. A transparent member 2, a magnifying lens 8 disposed on the reflection surface 2 a side of the transparent member 2 via predetermined light-gathering gaps 31 and 39,
The objective side of the magnifying lens 8 is cylindrically surrounded, is formed of a translucent material colored in a different color from the reflection surface 2a of the see-through member 2, and accommodates jewels on the inner surface or an extension of the inner surface. The first feature is that it includes the lighting tube 6.

The second feature is that the diameter of the see-through hole 9 in plan view is smaller than the inner diameter of the lighting tube 6 or the diameter of the magnifying lens 8.

A third feature is that the color of the lighting tube 6 is a color that makes a contrast with the color of the reflection surface 2a of the see-through member 2.

Further, it is assumed that the lighting tube 6 is colored by the colored translucent material 32 accommodated in the lighting tube 6.
The feature is.

Further, a see-through hole 9 for observation is formed in the inside, an eyepiece-side see-through member 2 having a reflective surface 2a on the back surface, and a predetermined lighting gap 31 on the reflective surface 2a side of the see-through member 2. A large diameter objective hole 60 is formed concentrically with the see-through hole 9, and a reflective surface 2 a on the see-through member 2 side is formed on the back surface.
Member 58 having an object-side reflecting surface 58a of a different color from
The fifth feature is that it is provided with:

A sixth feature is that the magnifying lens 8 is arranged on the transparent member 2 side or the jewel side of the objective section 58.

A seventh feature is that the color of the reflecting surface 58a on the object side is a color that makes a contrast with the color of the reflecting surface 2a of the see-through member 2.

An eighth feature is that a stand 59 for positioning the objective member 8 from the jewel mounting surface with a predetermined gap is provided on the object side reflection surface 58a side.

[0015]

The external light from the lighting gap 31 is reflected by the reflecting surface 2a of the see-through member 2 and becomes light of a color corresponding to the color of the reflecting surface 2a, and is irradiated onto the lighting tube 6 from above. This light is regulated by the length of the lighting tube 6, and is directly applied to the jewel at an angle of about 40 ° to 70 ° or more with respect to the horizontal plane. On the other hand, separately from this, external light passes through the entire surface of the lighting tube 6 and
(Color of the colored translucent material 32) is directly taken into the lighting tube 6 and irradiated on the jewel. The operator can look at the jewel through the magnifying lens 8 through the see-through hole 9 to see a pattern corresponding to the two types of reflected light colors of the jewel. At this time, since the diameter of the see-through hole 9 is smaller than the inner diameter of the lighting tube 6, the pupil looking through the see-through hole 9 is not reflected, and the above pattern can be surely seen. Lighting tube 6
By inserting the colored light-transmitting material 32 into the inner surface of the light-receiving tube 6 and covering the inner peripheral surface of the light-receiving tube 6 with the colored light-transmitting material 32, the color of the light-receiving tube 6 can be easily and arbitrarily changed.

According to the fifth to eighth aspects, the external light from the lighting gap 31 is reflected by the reflecting surface 2a of the see-through member 2 of the main body set on the stand 59, The objective member 58 is irradiated from above as light of a color corresponding to the color. This light is regulated by the objective hole 60, and is directly irradiated on the jewel at an angle of about 40 ° to 70 ° or more with respect to the horizontal plane. On the other hand, the light reflected on the object side reflection surface 58a of the object member 58 is applied to the jewel as light of a color corresponding to the color of the object side reflection surface 58a. When the operator looks into the jewel through the see-through hole 9, the operator can see a pattern corresponding to the two types of reflected light colors of the jewel.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front perspective view of a main body 1 of the gem pattern observation device of the present invention. As shown in FIG. 1, the main body 1 includes a see-through member 2, a holding member 3, and a grounding member 4, which are sequentially connected in three stages from above through legs 7, and
A lighting tube 6 is provided between the holding member 3 and the grounding member 4. The holding member 3 holds the magnifying lens 8 inside as described later.

Next, each part (the see-through member 2,
The structure of the holding member 3, the grounding member 4, the lighting tube 6, and the leg 7) will be described in detail with reference to FIGS. FIG. 2 shows the main body 1
FIG. The see-through member 2 has a donut shape with a flat upper and lower surface provided with a see-through hole 9 concentric with the outer shape at the center of the cylinder. The holding member 3 also has a two-layer structure of a lens support member 11 and a lens fixing member 12 having an inner diameter, which will be described later, and has a donut shape with upper and lower surfaces whose outer diameters are the same as the outer diameter of the see-through member 2. .

The lens supporting member 11 is provided with a lens insertion hole 13 having a diameter substantially equal to the outer diameter of the magnifying lens 8 into which the magnifying lens 8 which is a convex lens can be inserted at the center. In the center of the lens fixing member 12, a lens holding hole 14 having a diameter smaller than the outer diameter of the magnifying lens 8 is provided concentrically with the outer shape. The lens holding portion 12 and the lens support portion 11 are coaxially and closely fixed, and the magnifying lens 8 is inserted into the lens insertion hole 13 with the convex portion 8a facing the lens support portion 11, whereby the holding member 3 is moved. Is formed.

On the other hand, the grounding member 4 also has a three-layer structure including an insertion portion 16 having an inner diameter described later, a fixing portion 17 and a grounding portion 18, and the upper and lower surfaces having the same outer diameter as the outer diameter of the see-through member 2 are flat. Has a donut shape. At this time, the grounding part 1
Numeral 8 is made of an elastic soft material such as felt. In this embodiment, the insertion portion 16 and the fixing portion 17 of the see-through member 2, the holding member 3, and the grounding member 4 are all formed of an acrylic plate, but other hard and inexpensive hard materials such as metal and plastic are used. May be formed.

The insertion portion 16 has the lens insertion hole 1 in the center.
An insertion hole 19 having the same diameter as 3 is provided concentrically with the outer shape.
Further, the fixing portion 17 has a ground hole 21 having the same diameter as the lens holding hole 14 at the center and provided concentrically with the outer shape. Further, the grounding portion 18 is also provided with a hole having the same diameter as or slightly larger than the grounding hole 21 at the center and concentric with the outer diameter. The grounding member 4 is formed such that the insertion portion 16, the fixing portion 17, and the grounding portion 18 are closely and concentrically fixed in order.

Both ends of the lighting tube 6 whose outer diameter is the same as the insertion hole 19 (the same diameter as the lens insertion hole 13) and whose inner diameter is the same as the ground hole 21 (the same diameter as the lens holding hole 14) are provided. It has an open cylindrical shape, and is formed of a light-transmitting material such as transparent. In this embodiment, it is formed of a transparent plastic. Then, one end of the lighting tube 6 is inserted into the insertion hole 19,
The lighting tube 6 and the grounding member 4 are fixed in a state where they are fitted until the end surface contacts the fixing portion 17. The lighting tube 6 is fixed to the holding member 3 in a state where the other end of the lighting tube 6 is fitted into the lens insertion hole 13 until the end surface of the lighting tube 6 comes into contact with the magnifying lens 8. With the above structure, the holding member 3 and the grounding member 4 are connected via the lighting tube 6, and the end of the lighting tube 6 on the holding member 3 side fixes the magnifying lens 8 to the holding member 3 side. Also, the grounding member 4 of the lighting tube 6
An inner peripheral surface of the side end is the same as the peripheral surface of the ground hole 21 and is open to form a mounting hole 20.

At this time, the length of the lighting tube 6 is
Distance from the lower surface of the grounding member 4
Is slightly shorter than the focal length of the ground member 4, and is determined so that the image on the surface at the lower surface position of the grounding member 4 is clearly formed. The angle between the axis connecting the center of the mounting hole 20 and the upper end edge of the lighting tube 6 with the axis of the lighting tube 6 is about 20 ° to 50 °. ing.

Further, as described above, the transparent member 2, the holding member 3, and the grounding member 4 having the same outer diameter have the legs 7 attached to the same positions around the center hole when they are concentrically stacked. Three or more holes 23 are provided. Also, only the fixing portion 17 of the grounding member 4 has a head 26 of a bolt 26 described later.
The support hole 23 is widened so that a can be inserted. Further, the transparent hole 9 of the transparent member 2 has a diameter smaller than the inner diameter of the lighting tube 6.

Next, the structure of the leg 7 will be described. The leg 7 has a collar 27 having the same length as the distance between the holding member 3 and the grounding member 4 connected by the lighting tube 6 (the distance from the upper surface of the grounding member 4 to the lower surface of the holding member 3). It comprises a collar 28 having a length, a bolt 26 having a length described later, and a nut 29. At this time, the length of the screw portion of the bolt 26 is approximately the length of the collar 28, the length of the collar 27, the thickness of the see-through member 2, the thickness of the holding member 3, the thickness of the insertion portion 16 of the grounding member 4, and the nut. The length is the sum of the lengths of the 29 threaded portions. The diameter of the support hole 23 is such that the bolt 26 passes but the collar 28 and the collar 27 do not. Color 28 and color 27
Is hollow so that the screw portion of the bolt 26 can be inserted.

The transparent member 2 is provided on the lens fixing member 12 side of the holding member 3 in parallel with the holding member 3, and a collar 28 is provided between the support hole 23 on the lens fixing member 12 side and the support hole 23 of the transparent member 2. The collar 27 is also provided between the holding member 3 and the support hole 23 of the grounding member 4. Then, from the side of the objective section 4 to the tip (the projecting portion from the see-through member 2) of the bolt 26 penetrating through the holding member 3 and the see-through member 2 via the collars 27 and 28 from the side of the objective section 4 until the head 26a comes into contact with the insertion section 16. By screwing the nut 29, the transparent member 2,
The main body 1 is formed integrally with the holding member 3, the grounding member 4, and the reflecting cylinder 6 concentrically. Also, the grounding portion 18 of the grounding member 4
Does not provide the support hole 23, and the fixing portion 1 after the bolt 26 is inserted.
7 may be attached to the lower surface.

With the above structure, a space other than the legs 7 is formed as a space between the see-through member 2 and the holding member 3, and the space is a space 3 for lighting.
1 are formed. Although the collar 28 and the collar 27 have the same length in this embodiment, the length of the collar 28 is such that a space as the lighting space 31 can be provided between the holding member 3 and the see-through member 2 as described above. May be changed arbitrarily. The surface (back surface) of the see-through member 2 on the holding member 3 side is a reflection surface 2a, and has an arbitrary color. The color of the reflection surface 2a may be arbitrarily changed.

On the other hand, the end of the lighting tube 6 on the grounding member 4 side is opened as the mounting hole 20 as described above. Then, a colored translucent material 32 such as cellophane having a color opposite to the color of the reflecting surface 2a (a color with a clear contrast) is inserted into the inner surface of the lighting tube 6 from the mounting hole 20 to clean the inner peripheral surface of the lighting tube 6. By covering with the colored translucent material 32, the lighting tube 6 is colored while having translucency. At this time, the color of the lighting tube 6 can be easily and arbitrarily changed by exchanging the colored translucent material 32.

The jewelry pattern observing instrument of the present invention having the above-described structure has a simple structure and can be manufactured at a low cost because no expensive parts are used.

Next, the operation of the gem pattern observing instrument having the above structure will be described. In the following embodiment, a case is described in which a diamond is viewed as one of the jewels. However, the pattern of the jewel to be observed can be seen for other jewels as well as the diamond. When viewing a diamond-shaped pattern in a place where there is light (outside light) around, as shown in FIG.
The main body 1 is set with the pavilion side up and supported by a stand 35 or the like, and the diamond 51 is positioned in the mounting hole 20. When viewing the arrow-shaped pattern, as shown in FIG. 2B, the diamond 51 is placed with the crown side facing upward, and the main body 1 is set in the same manner as described above.

As a result, first, the external light from the lighting gap 31 is reflected by the reflecting surface 2a of the see-through member 2, and is radiated from above onto the lighting tube 6 as light having a color corresponding to the color of the reflecting surface 2a. And this light is regulated by the length of the lighting tube 6,
The diamond 51 is directly irradiated at an angle of about 40 ° to 70 ° or more with respect to the horizontal plane. On the other hand, separately from this, external light passes through the entire surface of the lighting tube 6 and becomes light having a color corresponding to the color of the lighting tube 6 (the color of the colored translucent material 32) and is directly taken into the lighting tube 6 to be converted into the diamond 51. Irradiated. With this structure, the efficiency of converting external light into light for irradiating the diamond is high, so that the range of use place is wider than that of a conventional device, and it is not necessary to provide a light source.

The state of light irradiation on the diamond 51 is substantially the same as the state of light irradiation on the diamond in which a heart-shaped or arrow-shaped pattern of the diamond shown in Japanese Patent Application Laid-Open No. 6-174648 can be seen. Therefore, when the operator views the diamond 51 through the see-through hole 9 through the magnifying lens 8,
You can see heart-shaped or arrow-shaped patterns corresponding to different types of light colors. In addition, since the diameter of the see-through hole 9 is smaller than the inner diameter of the lighting tube 6, there is no occurrence of a phenomenon in which the pupil that is seen through the see-through hole 9 is reflected and the pupil is not seen, so that the pattern can be surely seen.

At this time, since external light is taken into the lighting tube 6 from the entire surface of the lighting tube 6, the taking efficiency is high. In some cases, reflection is not used.
Can be arbitrarily set as long as the condition for contrast with the reflection surface 2a is satisfied. For this reason, the above-mentioned pattern of the diamond can be seen beautifully in a variety of colors than before. Further, the colors of the reflecting surface 2a and the lighting tube 6 may be different colors, instead of a single color. In this case, a more beautiful pattern can be seen.

The focus from the magnifying lens 8 to the position of the lower surface of the grounding member 4 is set loose by the above-described configuration, and the focus on the diamond to be measured is adjusted by the eyes of the operator. At this time, as described above, the diamond image is not clearly formed and the focus is not deviated, and the size of the diamond does not vary so much that the eye cannot be focused. Regardless of the above, the operator can surely see the diamond pattern. In other words, no focusing operation (focusing mechanism) is required.

Next, an example of actual use in a retail store or the like is shown in FIG. The front side of a sample stand 34 showing a sample photograph 33 of a heart and an arrow in advance (sample photograph 3
A set part 36 for placing a diamond is provided on the third side), and the gem pattern observing device of the present invention is set on the set part 36 on which the diamond is placed so that the diamond is located in the mounting hole 20 and visually recognized. The system 37 is configured. Then, when selling diamonds to a customer at a retail store such as a department store, the customer himself / herself can actually look into the jewelry pattern observation device and check the heart or arrow-shaped pattern.

At this time, since the jewelry pattern observing instrument of the present invention does not require focusing, the customer can surely see the pattern without complicated operations. In addition, the gem pattern observation device of the present invention can sufficiently clearly see a heart-shaped or arrow-shaped pattern with external light at the level of illumination of a general store such as a department store. For this reason, it is possible to put the system 37 together in a showcase for theft prevention or the like, and to have the customer look through the jewelry pattern observation device via the showcase. If the setting portion 36 is transparent, the diamond may be placed on either the upper surface or the lower surface of the setting portion 36.
Further, since the gem pattern observation device of the present invention is small in size, it does not take up space in a showcase, and is inexpensive and can be purchased at many retail stores.

Next, another embodiment will be described. As shown in FIGS. 4 to 6, the main body 1 includes a transparent member 2 provided with an external light take-in tube 39, a holding member 3, a daylighting tube 6, and a cap 38. When used as an instrument for observing a jewelry pattern, as shown in FIG. 4, the outside light taking-in tube 39 of the see-through member 2 is externally fitted to the holding member 3, and when not in use, as shown in FIG. The external light intake tube 39 is externally fitted to the holding member 3 and the cap 38 is externally fitted to the holding member 3.

The above structure will be described in more detail.
First, the transparent member 2 will be described. The transparent member 2 is formed of a hard material such as transparent plastic, and has a shape in which one end of an external light intake cylinder 39 whose both ends are open is closed by a lid having a transparent hole 9 similar to that of the above-described embodiment. It has become. At this time, the inner surface of the lid of the see-through member 2 is a reflective surface 2a of an arbitrary color.

Next, the structure of the holding member 3 will be described.
The holding member 3 has a cylindrical lens support member 1 having an inner diameter substantially equal to the outer diameter of the magnifying lens 8 and having both ends opened.
1, a cylindrical lens fixing member 12 having the same outer diameter as the inner diameter of the lens support member 11 and having both ends opened is provided.
One end protrudes from the lens support member 11 and the other end is inserted and fixed so as to be located in the lens support member 11, and has an integrated structure. The magnifying lens 8 as a convex lens is inserted into the lens support member 11 with the convex portion 8a facing the open end on the lens support portion 11 side.

On the other hand, the lighting tube 6 has an outer diameter equal to the inner diameter of the lens support member 11, and an inner diameter equal to the inner diameter of the lens fixing member 12, and has a cylindrical shape with both ends opened. It is formed of a light-transmitting material. In this embodiment, it is formed of a transparent plastic. Then, the one end thereof is inserted into and fixed to the lens support portion 11 until it abuts on the magnifying lens 8, thereby being integrated with the holding member 3. The other end of the lighting tube 6 is left open to form a mounting hole 20. Then, similarly to the above-described embodiment, a colored translucent material 32 such as cellophane having a color opposite to the color of the reflecting surface 2a (a color with a clear contrast) is inserted from the mounting hole 20 to the inner surface of the light collecting tube 6 by inserting the same. 6 is colored while having translucency.

As in the case of the lighting tube 6 of the above-described embodiment, the length of the lighting tube 6 of this embodiment is also changed from the magnifying lens 8 to the ground member 4.
Is determined so that the distance to the lower surface position is slightly shorter than the focal length of the magnifying lens 8 and the image on the surface at the lower surface position of the lighting tube 6 is clearly formed. Further, the regulation of the incidence of external light by the length is the same as in the above embodiment.

The outside light take-in tube 39 has an inner diameter equal to the inner diameter of the lens fixing member 12 and an outer diameter equal to the outer diameter of the lens support member 11. Further, the length from the end to the reflecting surface 2a is the same as or slightly longer than the length from the end on the lighting tube 6 side of the lens support member 11 to the end of the lighting tube 6. The cap 38 has the same outer diameter and inner diameter as the external light intake cylinder 39 and has a cylindrical shape with one end closed. The length of the cap 38 is such that the height of the inner surface is the end of the lens support member 11 on the lens fixing member 12 side. The length from the portion to the end of the lens fixing member 12 is the same or slightly longer.

With the above structure, when the gem pattern observing device of the present embodiment is used, the external light take-in tube 39 of the see-through member 2 is externally fitted on the lens fixing member 12 side of the holding member 3. The transparent member 2 and the lighting tube 6 are used integrally.
In other words, the reflection surface 2a is provided with a light-gathering gap (external light intake cylinder 39).
Is positioned with respect to the magnifying lens 8 via

When a diamond 51 and a heart-shaped pattern are to be seen in the mounting hole 20 of the lighting tube 6 in a place where light (external light) is present in the surroundings as in the above embodiment, FIG.
As shown in FIG. 6, the diamond 51 is set up with the pavilion side up and supported by the stand 35 or the like. When viewing an arrow-shaped pattern, the diamond 51 is placed with the crown side up as shown in FIG. Install.

From the above state, looking into the see-through hole 9, a diamond heart or arrow-shaped pattern is seen.
At this time, the mechanism in which the heart or arrow-shaped pattern is visible is exactly the same as in the case of the above-described embodiment except that the external light intake tube 39 functions as a lighting space, and thus a detailed description is omitted.

On the other hand, when the device for observing a jewel pattern is not used, the cap 38 is externally fitted to the lens fixing member 12 and the external light intake tube 39 is externally fitted to the lighting tube 6, so that the holding member 3 is attached. The transparent member 2, the lighting tube 6, and the cap 38 are compact (about half as long as used)
Become one. At this time, the cap 38 protects the magnifying lens 8. In other words, the main body 1 is smaller when it is carried than when it is used. Further, since the structure is simpler than that of the above-described embodiment, the manufacturing cost can be further reduced.

[0047] shows a general perspective view and a side cross-sectional view of the main body 1 of another pattern observation device in FIGS next. The main body 1 includes a holding member 3 and a see-through member 2 having the same structure as the embodiment shown in a perspective view in FIG. 1 in which the magnifying lens 8 is inserted with the convex portion 8a facing the lens fixing member 12 side. The surface 2a and the surface of the holding member 3 on the lens support member 11 side are brought into close contact with each other, and are fixed with screws 52, nuts 53 and the like. At this time, the reflection surface 2a and the surface 12a of the holding member 3 on the lens fixing member 12 side have colors that make a contrast with each other.

With the above structure, a composite reflecting surface 55 is formed on the back surface of the main body 1 around the transparent hole 9 as shown in FIG.

[0049] Hereinafter, the operation principle and use of the pattern observation instrument will be described. As shown in FIG.
The reflecting surface 2 on the transparent member 2 side above the diamond 51.
Light 56 reflected from a is diamond, α is about 20 °
It is set at a position where irradiation is performed at an angle of about 50 °. Specifically, the distance L from the diamond to the lower surface of the main body 1 (the surface 12a on the lens fixing member 12 side) is about 2 to 4 times the radius of the see-through hole 9.

When the main body 1 is set at the above position, the diamond 56 is irradiated with light 56 reflected from the reflection surface 2a and light 57 reflected from the surface 12a, in addition to external light. The irradiation state of the reflected lights 56 and 57 at this time is almost the same as the irradiation state of the light to the diamond in which a heart-shaped or arrow-shaped pattern of the diamond shown in JP-A-6-174648 can be seen. The operator inserts the diamond 51 through the magnifying lens 8 into the see-through hole 9.
From above, one can see the aforementioned heart or arrow-shaped pattern of the diamond. The selection of whether to see the heart-shaped pattern or the arrow-shaped pattern is the same as in the above-described embodiment.

In this embodiment, since the external light having no incident regulation is reflected on the reflecting surface 2a and the surface 12a, the light is irradiated on the diamond. Therefore, the efficiency of converting the external light into the light irradiated on the diamond is improved. It is not only possible to observe patterns in a wider environment than conventional instruments,
a and the restriction on the color of the surface 12a are also reduced.

Further, embodiments according to claims 5 to 8 will be described. 13 and 14 show a perspective view and a side sectional view of the main body 1 of the device for observing a jewel pattern according to the present embodiment. This structure has a shape in which the lighting tube 6 is removed from the jewelry pattern observation device of the embodiment whose perspective view is shown in FIG. Then, the magnifying lens 8 is inserted with the convex portion 8a facing the lens fixing member 12 side, and the holding member configured with the lens supporting member 11 side facing the transparent member 2 side is diverted to the objective member 58. I have. Accordingly, the lens holding hole is diverted to the objective hole 60. The color of the reflecting surface 2a on the see-through member 2 side and the surface of the objective member 58 on the lens fixing member 12 side (object-side reflecting surface) 58a are colors that make a contrast with each other.

With the above structure, the grounding member 4 and the leg 7 function as a stand 59, and the position of the objective member 58 is adjusted to the center of the mounting hole 20 at the lower surface position of the grounding member 4 and the upper edge of the objective hole 60. Are set so that the angle formed between the line connecting them and the axis of the mounting hole 20 is about 20 ° to 50 °. Note that the grounding member 4 may not be provided. Although the magnifying lens 8 can be easily removed, the magnifying lens 8 may be fixed using a fixture or the like in some cases.

The operation principle of this embodiment and the method of use will be described below. First, the main body 1 of the jewelry pattern observation device of the present embodiment is set in the same manner as in the above-described embodiment in which a front perspective view is shown in FIG. As a result, external light from the lighting gap 31 is reflected by the reflecting surface 2a of the see-through member 2, and the reflecting surface 2a
The objective member 58 is irradiated from above as light of a color corresponding to the color a. This light is regulated by the objective hole 60, and the diamond 51 has a diameter of about 40 ° -7 ° with respect to the horizontal plane.
Direct irradiation at an angle of 0 ° or more. On the other hand, external light reflected on the objective-side reflecting surface 58a of the objective member 58 is transmitted to the objective-side reflecting surface 5a.
The diamond 51 is irradiated as light having a color corresponding to the color 8a. That is, in addition to the external light,
Different types of light are emitted.

The state of the light irradiation on the diamond 51 at this time is almost the same as the state of light irradiation on the diamond in which the heart-shaped or arrow-shaped pattern of the diamond shown in JP-A-6-174648 can be seen. Since they are equivalent, the operator can look at the diamond 51 through the magnifying lens 8 through the see-through hole 9 and see the heart-shaped or arrow-shaped pattern of the diamond. The selection of whether to see the heart-shaped pattern or the arrow-shaped pattern is the same as in the above-described embodiment.

In the present embodiment, since the diamond is irradiated with light that is reflected by the reflecting surface 2a and the object-side reflecting surface 58a, external light having no incident regulation is applied to the diamond. The conversion efficiency is high, and not only can the pattern be observed in a wider environment than in a conventional instrument, but also the restrictions on the colors of the reflecting surface 2a and the object-side reflecting surface 58a are reduced.

[0057]

According to the present invention configured as described above, in the case where the external light reflected on the reflective surface whose periphery is open is directly radiated to the jewel, or in the case where the jewel has a lighting tube,
Since the external light passes through the entire surface of the lighting tube and becomes light in a color corresponding to the color of the lighting tube, it is directly taken into the lighting tube and illuminated on the jewel, so the efficiency of converting external light into light for illuminating the jewel is high. This has the effect of increasing the range of the environment where the pattern can be clearly seen without using a lighting device or the like.

Further, in the case where the lighting tube is provided, since the outside light is taken into the lighting tube from the entire surface, there is an effect that the efficiency of taking in the outside light is good and the limitation of the color of the lighting tube is reduced. For this reason, the color of the jewelry pattern can be colored with more variety than conventional instruments, and there is also an effect that the pattern can be seen beautifully. The color of the lighting tube can be easily changed by changing the colored translucent material, so not only can the color of the pattern be changed easily, but also the colored translucent material can be replaced when it becomes old. There is also an advantage that it is.

On the other hand, in the case where the gem is not provided, since the light applied to the jewel directly irradiates the light reflected from the reflecting surface, the jewel can be more easily used in a wider environment than a conventional device. There is also an effect that the pattern can be seen.

Further, since no parts using electricity such as a lighting device are used, not only the structure and operation are simplified, but also the number of failures is reduced and the cost is advantageous.

Further, since the see-through hole is smaller than the lighting tube, the magnifying lens or the objective hole, when the operator looks into the see-through hole, the pupil of the worker is not reflected and the pattern is not invisible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main body of a tool for observing a jewel pattern.

FIGS. 2A and 2B are cross-sectional views showing the internal structure of a tool for observing a jewel pattern.

FIG. 3 is a perspective view showing a use state of the jewelry pattern observation device.

FIG. 4 is a perspective view showing an assembled state when using the jewelry pattern observation device.

FIG. 5 is a perspective view showing an assembled state of the gem pattern observation device when not in use.

FIGS. 6 (a), (b) and (c) are side sectional views of a gem pattern observation instrument.

FIG. 7 is a side view showing a reflection state of light of a jewel.

FIGS. 8A and 8B are plan views showing heart-shaped and arrow-shaped patterns.

FIG. 9 is a perspective view of the main body of the jewelry pattern observing instrument.

FIG. 10 is a side sectional view of an instrument for observing a jewel pattern.

FIG. 11 is a bottom view of the jewelry pattern observation device.

FIG. 12 is a schematic side view showing an operation state of the gem pattern observation device.

FIG. 13 is a perspective view of the main body of the jewelry pattern observing instrument.

FIG. 14 is a side sectional view showing the internal structure of the gem pattern observation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Transparent member 2a Reflection surface 6 Lighting tube 8 Magnifying lens 9 Lighting hole 31 Lighting gap 32 Colored translucent material 39 Lighting tube (lighting gap) 58 Object member 58a Object-side reflecting surface 59 Stand 60 Object hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G01N 21/87 G02B 27/00 A44C 17/00

Claims (8)

(57) [Claims] 1. A viewing hole (9) for observation is formed inside,
An eyepiece side see-through member (2) having a reflective surface (2a) on the back surface
A magnifying lens (8) arranged on the reflecting surface (2a) side of the see-through member (2) via predetermined light-gathering gaps (31) and (39); and an objective side of the magnifying lens (8). In a cylindrical shape, a light-transmitting tube (a light-transmitting material formed of a light-transmitting material colored in a different color from the reflecting surface (2a) on the transparent member (2) side) and containing a jewel on the inner surface or an extended side of the inner surface. 6) A device for observing jewelry patterns comprising: 2. The instrument for observing a jewel pattern according to claim 1, wherein the diameter of the see-through hole (9) in plan view is smaller than the inner diameter of the lighting tube (6) or the diameter of the magnifying lens (8). 3. The instrument for observing a jewel pattern according to claim 1, wherein the color of the lighting tube (6) is a color having a contrast with the color of the reflection surface (2a) of the see-through member (2). 4. The instrument for observing a jewel pattern according to claim 1, wherein the lighting tube is formed by coloring with a colored translucent material accommodated in the lighting tube. 5. A viewing hole (9) for observation is formed inside,
An eyepiece side see-through member (2) having a reflective surface (2a) on the back surface
And a predetermined lighting gap (31) on the reflection surface (2a) side of the see-through member (2) to form a large-diameter objective hole (60) concentric with the see-through hole (9). A jewelry pattern observing instrument comprising an object member (58) having an object-side reflecting surface (58a) of a different color from the reflecting surface (2a) on the transparent member (2) side on the back surface. 6. The gem pattern observation instrument according to claim 5, wherein a magnifying lens (8) is arranged on the side of the transparent member (2) or on the gem side of the objective section (58). 7. The instrument for observing a jewel pattern according to claim 5, wherein the color of the reflecting surface on the object side (58a) is a color having a contrast with the color of the reflecting surface (2a) of the see-through member (2). 8. A stand (59) for positioning the object member (8) from the jewel mounting surface with a predetermined gap provided on the object side reflection surface (58a) side.
For observing jewelry patterns.