JP3643085B2 - Jewelery observation device, photographing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an observation apparatus and an imaging apparatus for jewelry such as diamond, and more particularly to an observation apparatus and an imaging apparatus for easily determining whether a jewelry is cut or not.
[0002]
[Prior art]
The value of jewelry is evaluated by four elements: carat, color, clarity, and cut. In particular, cuts (proportions) are regarded as important, but it is difficult to evaluate them unless they are experts with advanced skills.
[0003]
Japanese Patent Publication No. 6-103268 discloses an instrument that makes it possible to judge whether a cut is good or bad even if it is not an expert. This instrument includes a non-translucent lower tube portion on which diamond is placed and a translucent upper tube portion. Thereby, the diamond is irradiated with light from a certain angle range above the diamond. When observing from the lens directly above in this state, the irradiated light is reflected or refracted on a specific surface of the diamond and enters the observer's eyes, so that a certain pattern is observed. If the diamond is cut well, this pattern will appear regularly and symmetrically. By evaluating the symmetry and regularity of this pattern, even an amateur can easily determine the quality of diamond shine.
[0004]
[Problems to be solved by the invention]
However, the instrument described in the above Japanese Patent Publication No. 6-103268 is effective for determining the proportion of a specific surface of a cut, but it is not possible to determine the proportion of a portion other than the specific surface. It was difficult. That is, in the conventional instrument, since the incident direction of light is limited, only reflected light or refracted light on a specific surface can be observed. Even if reflected light or refracted light from another surface enters the eyes of the observer, it is difficult to recognize the difference between the reflective surface or the refracted surface because the color of the light source is one.
[0005]
An object of the present invention is to provide a jewelry observation apparatus that can evaluate the quality of a cut from various directions without complicating the configuration.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an observation apparatus according to the present invention includes a table on which jewelry is placed, a magnifier capable of observing the jewelry placed on the table, the magnifier, and a jewelry placed on the table. It is on a straight line connecting the illuminator having a center on a straight line to be connected and arranged on the circumference of a circle included in a plane perpendicular to the straight line, and the jewelry placed on the table. And arranged on the circumference of a circle having a center at a position different from the center of the light emitter and included in a plane perpendicular to the straight line, and reflects or transmits part of the light from the light emitter. The first light irradiating unit capable of irradiating the jewelry with the reflected light or transmitted light and the straight line connecting the magnifying glass and the jewelry placed on the table are shielded from the light emitter. It is possible to reflect a part of the light and irradiate the jewelry that is placed on the table with the reflected light. A second light irradiating unit having a product, and the second light irradiating unit is capable of irradiating the jewelry with light having a color different from that of the light irradiated by the first light irradiating unit. It is possible to transmit the reflected light from the jewelry.
[0007]
In the observation apparatus, it is more preferable that the first light irradiation unit is a reflection plate or a transmission plate having a color different from that of the second light irradiation unit .
In the observation apparatus, the second light irradiation unit is preferably a glass plate.
[0008]
More preferably, the observation apparatus further includes a non-translucent cylinder that covers the periphery of the jewelry placed on the table and has an open upper end.
[0009]
An imaging device of the present invention includes the above-described observation device, and a camera attached to the magnifying glass provided in the observation device so as to be able to take an observation image by the magnifying glass.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0011]
(Configuration of the embodiment)
FIG. 1 is a conceptual diagram of an observation apparatus or an imaging apparatus according to an embodiment of the present invention. As shown in the figure, the observation apparatus of this embodiment includes a table 2 on which jewelry such as diamond is placed, a colored plate 3 that is a first light irradiation unit disposed above the table, and a position directly above the table. A common that can irradiate light to both the microscope 4 that is the magnifying glass, the glass plate 5 that is the second light irradiating unit arranged directly above the table, and both the colored plate 3 and the glass plate 5 A circular fluorescent lamp 6 that is a luminous body of the above and a cylindrical body 7 that covers the periphery of the jewelry placed on the table. In addition to the above, the photographing apparatus further includes a camera 8 capable of photographing an observation image by the microscope 4.
In this specification, “above the table” means the direction of the magnifying glass 4 when viewed from the table 2 as shown in FIGS. 1 and 2. 1 and 2, all of the colored plate 3, the glass plate 5, and the fluorescent lamp 6 are arranged above the table. On the other hand, “directly above the table” in this specification means a position including a straight line connecting the magnifier 4 and the jewelry placed on the table 2 as in the glass plate 5 shown in FIGS. 1 and 2. The phrase “arranged right above the stand” means that the line is arranged so as to block the straight line connecting the magnifier 4 and the jewelry.
[0012]
The table 2 is provided with a depression or mark for determining a predetermined position for placing jewelry. Here, a brilliant cut diamond can be placed on the table 2 with its table face down. The table 2 is preferably impermeable to light, and it is desirable that the height and direction can be finely adjusted.
[0013]
The microscope 4 is focused on the surface of the jewelry so that the jewelry can be magnified. In order to obtain good observation results according to the size of the gem, it is desirable that the magnification can be adjusted steplessly.
[0014]
The fluorescent lamp 6 is preferably circular and emits light when connected to a lighting device (not shown) and a power source. The circular fluorescent lamp 6 is arranged so that the center thereof is located directly above the jewelry and is horizontal. Light from the fluorescent lamp 6 is evenly irradiated from the predetermined elevation angle direction to the jewelry on the table 2 through the colored plate 3 and the glass plate 5.
[0015]
Here, the colored plate 3 that is the first light irradiating unit is horizontally disposed above the fluorescent lamp 6 and its lower surface is colored in a predetermined color (for example, red or pink). The central portion of the colored plate, that is, the portion directly above the jewelry is hollowed out. As indicated by an arrow a in FIG. 1, the light irradiated on the colored plate 3 from the fluorescent lamp 6 is reflected downward on the lower surface of the colored plate 3 to become the light of the predetermined color, and the jewelry from a predetermined elevation angle direction. Is irradiated.
[0016]
As shown in FIG. 2, the position of the colored plate 3 is not limited to the position above the fluorescent lamp 6, but may be below the fluorescent lamp 6 (however, above the table 2). In this case, the colored plate 3 is transparent or translucent. As indicated by an arrow a in FIG. 2, the light irradiated on the colored plate 3 from the fluorescent lamp 6 is refracted or irregularly reflected by the colored plate 3 to become the predetermined color, and is irradiated on the jewelry from a predetermined elevation angle direction. .
[0017]
The glass plate 5, which is the second light irradiation unit, is located immediately above the jewelry, and has a sufficient area to reflect the light emitted from the fluorescent lamp 6 toward the jewelry. . The color of the glass plate 5 is different from the color of the colored plate 3, and is colorless and transparent, for example. As shown by arrows b in FIGS. 1 and 2, the light irradiated to the glass plate 5 from the fluorescent lamp 6 is reflected downward by the glass plate 5 and is irradiated to the jewelry.
[0018]
In addition, since the microscope 4 is also arrange | positioned just above jewelry, it is necessary to arrange | position the glass plate 5 and the microscope 4 which are the 2nd light irradiation parts so that a mutual function may not be inhibited. For example, the second light irradiation unit is configured by a colorless and transparent plate like the glass plate 5 of the present embodiment, or by a half mirror, and the glass plate 5 is disposed below the objective lens of the microscope 4. In addition, for example, when the second light irradiation unit is configured by an opaque mirror or light emitter, the second light irradiation unit and the microscope 4 are positioned so as to be shifted from each other by a minute angle when viewed from the jewelry. Arrange to do. In the case where the second light irradiation unit is configured by a light emitter, the second light irradiation unit may be provided in the tube of the microscope.
[0019]
The cylindrical body 7 is formed by, for example, rolling white paper into a cylindrical shape, and is arranged on the base 2 so that the jewelry placed on the base 2 is located at the center thereof. The upper end of the cylinder 7 is open, and light from a direction higher than a predetermined elevation angle can be incident on jewelry placed at the center thereof. A part of the light from the fluorescent lamp 6 is incident on the jewelry via the colored plate 3 or the glass plate 5, but it is prevented that the jewelry is directly irradiated without passing through this.
[0020]
By attaching the camera 8 to the eyepiece of the microscope 4, it can function not only as an observation apparatus but also as a photographing apparatus of the present invention.
[0021]
(Operation of the embodiment)
FIG. 3 is a copy of a brilliant cut diamond observed with an observation device. FIG. 3 (A) is observed with a conventional observation device, and FIG. 3 (B) is with the observation device of the above embodiment. The same diamond as above was observed. FIG. 3C shows a diamond other than the above observed by the observation apparatus of the above embodiment. The diamond is observed on the table 2 with its table surface facing down. In addition, the great circle of each figure is substantially equivalent to the size of the planar shape of diamond. The presence or absence of a diagonal line or the difference in the direction of the diagonal line in the great circle indicates a difference in observed color.
[0022]
As shown in the figure, in the conventional example of FIG. 3A, eight heart-shaped patterns appear symmetrically, but other patterns do not appear clearly. On the other hand, in the example of FIG. 3 (B), the eight stripes appear clearly in the center of the diamond. In FIG. 3 (B), since the eight stripes are not symmetrical, it can be seen that there is some imbalance in the diamond cut. Although detailed analysis is omitted, the eight stripes are derived from the light from the second light irradiation part, and the asymmetry and irregularity of the eight stripes are the central axis of the pavilion part of the cut. This is considered to be caused by the “deviation” of (Culet).
[0023]
In the example of FIG. 3C in which another diamond was observed with the observation apparatus of the present embodiment, both the heart-shaped pattern and the central eight stripes appeared equally and symmetrically. Therefore, in this embodiment, the quality of the cut can be easily and precisely evaluated by looking at the symmetry and regularity of the eight stripes.
[0024]
According to the present embodiment, the first light irradiation unit and the second light irradiation unit have different colors, so that the heart-shaped pattern and the eight patterns can be clearly displayed in different colors. Can do. In addition, the photograph taken by the photographing device can be made colorful, not a plain solitary photograph, so even when showing the photograph with diamonds to general consumers, the neat beauty of diamonds is even more striking. You can stand up or add a different product image.
[0025]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a jewelry observation apparatus that can evaluate the quality of cuts from various directions without complicating the configuration.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of an observation apparatus or an imaging apparatus according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram of an observation apparatus or an imaging apparatus according to a modification of the embodiment.
FIG. 3 is a copy of a brilliant-cut diamond observed with an observation device. FIG. 3 (A) is observed with a conventional observation device, and FIG. 3 (B) is with the observation device of the above embodiment. The same diamond as above was observed. FIG. 3C shows a diamond other than the above observed by the observation apparatus of the above embodiment.
[Explanation of symbols]
2 units 3 Colored plate (first light irradiation part)
4 Microscope (magnifying glass)
5 Glass plate (second light irradiation part)
6 Fluorescent lamps (light emitters)
7 Tube 8 Camera

Claims (5)

A table for placing jewelry,
A magnifying glass capable of observing jewelry placed on the table;
A light emitter having a center on a straight line connecting the magnifying glass and the jewelry placed on the table and arranged on the circumference of a circle included in a plane perpendicular to the straight line;
On the circumference of a circle that is on a straight line connecting the magnifying glass and the jewelry placed on the table and that has a center at a position different from the center of the light emitter and is included in a plane perpendicular to the straight line A first light irradiation unit that is arranged and reflects or transmits a part of the light from the light emitter, and is capable of irradiating jewelry reflected on the table with the reflected light or transmitted light;
Arranged so as to block the straight line connecting the magnifier and the jewelry placed on the table, it can reflect a part of the light from the light emitter and irradiate the jewelry placed on the table with the reflected light A second light irradiating part having a large area,
The second light irradiation unit can irradiate the jewelry placed on the table with light of a color different from the light irradiated by the first light irradiation unit, and the reflected light from the jewelry A device for observing jewelry that is configured to transmit light.   The jewelry observation apparatus according to claim 1, wherein the first light irradiation unit is a reflection plate or a transmission plate having a color different from that of the second light irradiation unit.   The jewelry observation apparatus according to claim 1 or 2, wherein the second light irradiation unit is a glass plate. In any one of Claims 1 to 3,
An apparatus for observing jewelry, further comprising a non-translucent cylinder that covers the periphery of the jewelry placed on the table and has an open upper end. The jewelry observation apparatus according to any one of claims 1 to 4,
A jewelry photographing device comprising: a camera attached to the magnifying glass provided in the observation device so as to be capable of photographing an observation image by the magnifying glass.

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