CN105974771B

CN105974771B - Watch glass with at least one gemstone

Info

Publication number: CN105974771B
Application number: CN201510414547.0A
Authority: CN
Inventors: M.邦克
Original assignee: Levitation AG
Current assignee: Levitation AG
Priority date: 2015-03-13
Filing date: 2015-07-15
Publication date: 2020-04-21
Anticipated expiration: 2035-07-15
Also published as: CN105974771A; EP3291699B1; EP3291699A1; DE102015204622A1; WO2016146203A1; CN205139573U

Abstract

The invention relates to a watch glass, comprising: a carrier glass (2) provided with at least one recess (4); a cover glass (3); and at least one diamond, precious stone or other gemstone (5) placed in the at least one indentation (4), wherein the indentation (4) is under vacuum. Another aspect of the invention relates to a watch having a watch glass according to the invention.

Description

Watch glass with at least one gemstone

Technical Field

The present invention relates to watch glasses with at least one gemstone, such as a diamond or precious gemstone (Edelstein). Another aspect of the invention relates to a watch having such a watch glass.

Background

Watch glasses with inlaid gemstones are well known. Here, the jewel is embedded in a groove of the watch glass. But because of the presence of air within the grooves, the visual effect of the stone is not optimal.

Disclosure of Invention

The object of the present invention is to propose a watch glass with at least one diamond, precious stone or other precious stone, which enables a better image of the stone.

This object is achieved by a watch glass comprising: the diamond table comprises carrier glass provided with at least one groove, cover glass and at least one diamond, precious gem or other gem placed in the at least one groove, wherein the groove is under vacuum condition. Because the vacuum has a lower visual density (Dichte) than air, the optical refractive index between the gemstone and the vacuum is greater than the optical refractive index between the gemstone and the air. Thus, a larger portion of the light (Lichtstrahl) that reaches the gemstone is reflected within the gemstone, which results in a better scintillation (Funkeln) of the gemstone.

Preferably, according to the present invention, the cover glass may have at least one groove.

Within the scope of the invention, the cover glass can have at least one groove which is flush with the at least one groove of the carrier glass. Thus, a first portion of the gemstone may be disposed within the groove of the carrier glass and a second portion of the gemstone may be disposed within the corresponding groove of the cover glass. In this way, the two panes can each be designed to be thin, which is advantageous for the visual effect of the watch glass, in particular when larger stones are used. Here, preferably, the sum of the thickness of the carrier glass and the thickness of the cover glass at the position of the groove may be larger than the height of the gemstone.

Furthermore, according to the invention, at least one recess can be provided in each case in the carrier glass and in the cover glass, in each case a gemstone being inserted into the recess. In this sense, the two glasses carry at least one gemstone. Therefore, the cover glass may also be referred to as carrier glass.

Preferably, the pressure in the groove is less than or equal to 0.01 bar. This gives the gemstone a better visual effect.

According to the invention, an intermediate layer is preferably arranged between the carrier glass and the cover glass. The intermediate layer serves as a protective measure, which ensures that no air penetrates into the recess and thus ensures that the vacuum remains in the recess for a longer time.

Particularly preferably, the intermediate layer can comprise an organic or inorganic connecting or bonding substance or an elastic film.

It is advantageous that: the grooves are configured such that contact between the gemstone and the groove is minimized. Thus, a greater portion of the light rays that reach the gemstone are reflected within the gemstone. When light is incident on the inside of a gemstone (diamond, sapphire, ruby, etc.) in the region below the gemstone, the phenomenon of total reflection is completely interrupted where the gemstone contacts the glass. Only the optical transition from the optical medium "gemstone" to the optical medium "vacuum" has a high refractive index. The index of refraction from the optical medium "gemstone" to the optical medium "glass" is very low. Thus, no total reflection occurs at the point of contact between the glass and the gemstone, but rather the light leaves the glass.

Minimized contact can result in: the gemstone does not lose its visual effect, such as glitter or glow, by setting into the watch glass.

According to an advantageous embodiment of the invention, the recess is conical or conical in shape. The visual effect of the gemstone is enhanced by this shape. The term "conical" is to be understood as meaning a shape formed by a base and side surfaces, wherein the base can be circular, but can also have any shape, for example rectangular or polygonal.

According to the invention, the gemstone advantageously has a first point with a first apex angle and the recess of the carrier glass has a second point with a second apex angle, wherein the second apex angle is configured to be smaller than the first apex angle. Thus, the gemstone may be arranged on the wall of the groove in a direction parallel to the carrier glass in the region having the greatest length, so that the base of the gemstone and the first tip of the gemstone do not contact the carrier glass. In particular, in the case of a gemstone with a facetted cut (Facettenschliff), the gemstone is advantageously supported on its girdle (Rundiste) with the first tip not in contact with the glass. A point is also understood here to be a point which, in the case of a gemstone with blunt ends, for example in the case of a emerald-type (Smaragdschliff) gemstone or in the case of a chamfered groove, occurs when the walls or sides of the gemstone or groove elongate until they intersect one another.

Advantageously, the second apex angle of the groove is between 73 degrees and 82 degrees, in particular 80 degrees. This design of the grooves results in a small contact of the gemstone with the grooves and thus a very high visual efficiency of the gemstone.

According to a further preferred embodiment of the invention, the groove is designed as a stepped groove with a first step and a second step. Thereby making the gemstone and the groove have little contact, which improves the visual appearance of the gemstone.

The stone is preferably at least partially configured as a faceting cut having a stone height and a stone diameter, wherein a first step of the groove is cylindrically configured with a first height and a first diameter, and a second step of the groove is cylindrically configured with a second height and a second diameter. According to the invention, preferably the first height is up to one quarter of the height of the stone and the first diameter is 5% larger than the diameter of the stone. Further in accordance with the present invention, the second height is three-quarters of the height of the gemstone and the second diameter is 10% less than the diameter of the gemstone. Thereby, only a small contact area is created between the gemstone and the groove, which enlarges the visual effect of the gemstone. The total height of the stepped recess, i.e. the sum of the first height of the first step and the second height of the second step, is advantageously equal to 1.1 to 1.15 times the height of the gemstone, so that neither the tip of the gemstone nor the flat (Tafel) of the gemstone will contact the carrier glass.

According to a further advantageous development of the invention, the recess is of hemispherical or spherical configuration, wherein the recess is polished in particular from the inside. Thereby achieving a high level of visual effect.

It is also advantageous that the gemstone is arranged within the groove without a gap filler (F ü gemassse) because gap fillers, such as adhesives, are omitted, the index of refraction between the gap filler and the gemstone is small, so a large portion of the light is reflected within the gemstone, thus enhancing the scintillation of the gemstone.

The invention furthermore relates to a watch having a watch glass according to the invention. The watch thus combines the advantages described above with reference to the watch glass according to the invention.

Drawings

Further details, advantages and features of the invention result from the following description of embodiments with reference to the drawing, in which identical or functionally identical components are provided with the same reference numerals, respectively. The figures are as follows:

fig. 1 shows a top view of a watch, provided with a watch glass with diamonds,

figure 2 shows a clearly simplified schematic partial view of a cross-section of a watch glass consisting of a cover glass and a carrier glass according to a first embodiment of the invention,

FIG. 3 shows a greatly simplified schematic partial view of a cross section of a watch glass consisting of a cover glass and a carrier glass according to a second embodiment of the invention, and

fig. 4 shows a greatly simplified schematic partial view of a cross section of a watch glass consisting of a cover glass and a carrier glass according to a third embodiment of the invention.

Detailed Description

The watch glass 1 according to the first embodiment of the present invention is described in detail below with reference to fig. 1 to 2.

Fig. 1 shows a watch 10 in the form of a wristwatch (Armbanduhr) with a housing 11 and a watch glass 1 according to the invention, said watch glass 1 being arranged in the housing 11 and being provided with a jewel. The housing 11 and the crystal 1 are circular in shape, but can have any other shape, for example rectangular, polygonal, etc. In particular, four gemstones 5, illustrated as diamonds, with a constant radius are arranged here in the watch glass 1 at the same distance from one another in the circumferential direction. But the position and number of the stones 5 can be arbitrarily selected according to the design of the watch. Thus, for example, one gemstone, two gemstones, or twelve gemstones may also be mounted into the watch glass 1. Furthermore, the watch 10 has a dial 12, which dial 12 is configured, for example, as a gold plate, and the watch 10 has three hands 13 for indicating time, minutes and seconds and has two connections for a watchband (Armband).

Fig. 2 is a clearly simplified schematic partial view of the section a-a of the watch glass 1 in fig. 1. The watch glass 1 has a carrier glass 2 and a cover glass 3, which are connected to one another and thus form a glass unit 7. The

glass

2, 3 is joined such that there is a gastight joining point 8 between the carrier glass 2 and the cover glass 3.

A groove 4 is arranged in the carrier glass 2, into which a gemstone 5 is inserted. The grooves 4 are under vacuum conditions, in particular under high vacuum (Feinvakuum) at a pressure below 0.01 bar. Thus, the visual effect of the gemstone 5 is enhanced because a smaller portion of the light reaching the gemstone 5 is lost.

According to the invention, the grooves 4 are configured conically, the stones 5, which are made in the shape of a faceting cut, each have a first tip with a first apex α, other shapes are also possible for the stones 5, furthermore, the grooves 4 are chamfered, whereby the carrier glass 2 can be configured thinly, the grooves 4 are formed such that, if the walls or sides of the grooves 4 (shown by dashed lines in fig. 2) are extended, the grooves 4 each have a second tip with a second apex β, the second apex β is configured to be smaller than the first apex α, in particular, the second apex β of the grooves 4 is equal to 80 degrees, whereby the stones 5 are supported on their respective bands 50, which abut against the inner walls 40 of the grooves 4, respectively, thus minimizing the contact of the stones 5 with the carrier glass, furthermore, the use of caulking is not made in the case of stones 5 arranged in the grooves 4, which would otherwise result in a deterioration of the visual image of the watch glass.

In contrast to the first exemplary embodiment, the recess 4 of the watch glass 1 according to the second exemplary embodiment of the invention, which is shown in fig. 3, is designed as a stepped recess. The stepped recess 4 has a first step 41 and a second step 42.

As can be seen in FIG. 3, stone 5, which is made in the shape of a facet cut, has a stone height h and a stone diameter d. The first step 41 and the second step are configured in a cylindrical shape. Furthermore, the first step 41 has a first height h1 and a first diameter d1, wherein the height h1 is approximately one quarter of the height h of the stone and the first diameter d1 is 5% larger than the diameter d of the stone. The second step 42 is configured with a second height h2 and a second diameter d2, wherein the second height h2 is approximately three-quarters of the stone height h and the second diameter d2 is 10% smaller than the stone diameter d. The ground plane of the gemstone 5 does not contact the underside of the cover glass 3.

The vacuum in which the grooves 4 are located and the shape and dimensions of the grooves 4 according to the second embodiment of the invention are such that the light rays are optimally reflected within the gemstone 5.

The third embodiment of the invention (fig. 4) differs from the second embodiment essentially in that an intermediate layer 6 is provided between the carrier glass 2 and the cover glass 3. The intermediate layer 6 can be an inorganic or organic bonding or adhesive substance or an adhesive layer or an elastic film, said intermediate layer 6 preventing air from penetrating into the recess 4. Thus, the optimum scintillation of the gemstone 5 can be maintained over a longer period of several years.

In addition to the above-mentioned text description of the invention, reference is hereby made in detail to the illustrations of the invention in fig. 1 to 4 with regard to its supplementary disclosure.

List of reference numerals

1 watch glass

2 Carrier glass

3 cover glass

4 groove (taper or step)

5 gemstones/diamonds/precious gemstones

6 intermediate layer

7 glass unit

8 gas-tight connection point

10 watch

11 casing

12 Dial

13 pointer

14 attachment for a bracelet

40 inner wall of groove

41 first step

42 second step

Girdle for 50 gems

Section A-A

α first top corner

β second vertex angle

d diameter of gemstone/gemstone diameter

h height of gemstone/height of gemstone

d1 first diameter

d2 second diameter

h1 first height

h2 second height

Claims

1. A watch glass, comprising:

-a carrier glass (2) provided with at least one groove (4),

-a cover glass (3), and

-at least one precious or other gemstone placed in said at least one groove (4),

-characterized in that the first and second parts are,

-the groove (4) is under vacuum and the gemstone is arranged within the groove (4) without a gap filler, wherein the groove (4) is configured such that the contact between the gemstone and the groove (4) is minimized, and

-an intermediate layer (6) is arranged between the carrier glass (2) and the cover glass (3), wherein the recess (4) is not covered by the intermediate layer (6).

2. Watch glass according to claim 1, characterised in that the pressure inside the groove (4) is less than or equal to 0.01 bar.

3. Watch glass according to any one of the preceding claims, characterised in that the precious or other precious stone is diamond.

4. Watch glass according to claim 1, characterised in that the intermediate layer (6) comprises an organic or inorganic bonding substance.

5. Watch glass according to claim 1 or 2, characterised in that the groove (4) is configured conically or conically.

6. Watch glass according to claim 5, characterised in that the gemstone has a first tip with a first apex angle (α) and the groove (4) has a second tip with a second apex angle (β), wherein the second apex angle (β) is configured to be smaller than the first apex angle (α).

7. Watch glass according to claim 6, characterised in that the second top angle (β) of the groove (4) is between 73 and 82 degrees.

8. Watch glass according to claim 1 or 2, characterised in that the groove (4) is configured as a stepped groove with a first step (41) and a second step (42).

9. The watch glass of claim 8, wherein the gemstone is at least partially configured in the shape of a faceting cut having a stone height (h) and a stone diameter (d), wherein the first step (41) is cylindrically configured with a first height (h 1) and a first diameter (d 1), wherein the first height (h 1) is one-quarter of the stone height (h) and the first diameter (d 1) is 5% greater than the stone diameter (d), and wherein the second step (42) is cylindrically configured with a second height (h 2) and a second diameter (d 2), wherein the second height (h 2) is three-quarters of the stone height (h) and the second diameter (d 2) is 10% less than the stone diameter (d).

10. A watch glass according to claim 1 or 2, characterised in that the gemstone is not secured with an adhesive, whereby a greater part of the light is reflected within the gemstone and the gemstone's scintillation is enhanced.

11. Watch glass according to claim 7, characterised in that the second top angle (β) of the groove (4) is 80 degrees.

12. Watch glass according to claim 1, characterised in that the intermediate layer (6) comprises an organic or inorganic adhesive substance.

13. Watch glass according to claim 1, characterised in that the intermediate layer (6) comprises an adhesive layer or an elastic film.