Patent US5483038A successfully refreshed from Google Patents.
US5483038A
Expired / Lapsed
US
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Method of working diamond with ultraviolet light
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1993-04-22
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Granted: 1996-01-09
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Expires: 2013-04-22
Abstract
Abstract Diamond is subjected to working such as smoothing or cutting by irradiation of light having a wavelength in the range of 190 nm to 360 nm to the surface of the diamond. The energy density of the incident light, the divergent angle of the light beam and the half-width of spectrum of the light are specified. The light beam is converged by a cylindrical lens. Moreover, the working is conducted in a specified material, whereby the flatness of the worked face and the working speed are improved.
Inventors
- 👤 Nobuhiro Ota
- 👤 Katsuko Harano
- 👤 Naoji Fujimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; B; B23; B23K; B23K26/00; B23K26/352; B23K26/3568; B23K26/3576; B28; B28D; B28D1/00; B28D1/22; B28D1/221; C04B41/0045; C04B41/009
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
87 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 360 nm or less, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 2
Independent Claim
87 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 360 nm or less, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 3
Independent Claim
93 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength in the range of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad or less.
Claim 4
Independent Claim
93 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength in the range of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad or less.
Claim 5
Dependent Claim
41 words
A diamond working method according to claim 2, wherein an energy density per one pulse of said pulsed laser light with which said diamond surface is irradiated is in the range of 10 -1 J/cm 2 to 106 J/cm 2 .
Claim 6
Dependent Claim
30 words
A diamond working method according to claim 2, wherein the half-width of an oscillation spectrum of said laser light is in the range of 10 -4 nm to 1 nm.
Claim 7
Dependent Claim
27 words
A diamond working method according to claim 2, wherein a variation in energy in a beam section of said laser light is up to 10% or less.
Claim 8
Dependent Claim
41 words
A diamond working method according to claim 2 or 5 wherein said pulsed laser light is converged to a line having a width of 10 μm or more by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 9
Dependent Claim
30 words
A diamond working method according to claim 2 or 5, wherein said pulsed laser light is converged by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 10
Dependent Claim
56 words
A diamond working method according to claim 7, wherein, when said diamond surface is irradiated with said pulsed laser light which is converged by said cylindrical lens or said cylindrical mirror, an incident angle on said diamond surface is in the range of 40 to 85 degrees with respect to a normal of said diamond surface.
Claim 11
Independent Claim
89 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of particles made of a material having a particle diameter of 0.5 to 10 μm and having an absorption coefficient of 1×10 2 cm -1 or more, and said diamond surface covered with said particle layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said particle layer.
Claim 12
Independent Claim
89 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of particles made of a material having a particle diameter of 0.5 to 10 μm and having an absorption coefficient of 1×10 2 cm -1 or more, and said diamond surface covered with said particle layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said particle layer.
Claim 13
Independent Claim
127 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of particles made of one or more materials or of a compound of said materials, said materials being selected from a group consisting of aluminum oxide, silicon nitride, silicon carbide, silicon oxide, aluminum nitride, boron nitride, boron oxide, titanium oxide, magnesium oxide, calcium oxide, iron oxide, zirconium oxide, yttrium oxide, and diamond, said materials or compound having a particle diameter of 0.5 to 10 μm, and said diamond surface covered with said particle layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said particle layer.
Claim 14
Independent Claim
127 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of particles made of one or more materials or of a compound of said materials, said materials being selected from a group consisting of aluminum oxide, silicon nitride, silicon carbide, silicon oxide, aluminum nitride, boron nitride, boron oxide, titanium oxide, magnesium oxide, calcium oxide, iron oxide, zirconium oxide, yttrium oxide, and diamond, said materials or compound having a particle diameter of 0.5 to 10 μm, and said diamond surface covered with said particle layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said particle layer.
Claim 15
Independent Claim
90 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of a liquid having an absorption coefficient of 1×10 2 cm -1 or more for light having a wavelength in the range of 190 nm to 360 nm, and said diamond surface covered with said liquid layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said liquid layer.
Claim 16
Independent Claim
90 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of a liquid having an absorption coefficient of 1×10 2 cm -1 or more for light having a wavelength in the range of 190 nm to 360 nm, and said diamond surface covered with said liquid layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said liquid layer.
Claim 17
Independent Claim
98 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of one liquid or of a mixture of two or more liquids, said liquid or liquids being selected from a group consisting of silicon oil, petroleum ether, hexane, benzene, acetone, ethyl acetate, propylene carbonate, and toluene, and said diamond surface covered with said liquid layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said liquid layer.
Claim 18
Independent Claim
98 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said diamond surface is covered with a layer of one liquid or of a mixture of two or more liquids, said liquid or liquids being selected from a group consisting of silicon oil, petroleum ether, hexane, benzene, acetone, ethyl acetate, propylene carbonate, and toluene, and said diamond surface covered with said liquid layer is irradiated with light having a wavelength in the range of 190 nm to 360 nm, thereby grinding a portion of said diamond which is exposed from said liquid layer.
Claim 19
Independent Claim
43 words
A method of working diamond, wherein said diamond is placed in alcohol, ketone, or ether or, of a mixture of two or more of them, and then is irradiated with light having a wavelength in the range of 190 nm to 360 nm.
Claim 20
Independent Claim
43 words
A method of working diamond, wherein said diamond is placed in alcohol, ketone, or ether or, of a mixture of two or more of them, and then is irradiated with light having a wavelength in the range of 190 nm to 360 nm.
Claim 21
Independent Claim
35 words
A method of working diamond, wherein said diamond is placed in an aqueous solution of acid or alkali, and then irradiated with light having a wavelength in the range of 190 nm to 360 nm.
Claim 22
Independent Claim
35 words
A method of working diamond, wherein said diamond is placed in an aqueous solution of acid or alkali, and then irradiated with light having a wavelength in the range of 190 nm to 360 nm.
Claim 23
Dependent Claim
67 words
A method according to claim 14, wherein said solution contains a compound selected from the group consisting of HCl, CH 3 COOH, H 2 SO 4 , P 2 O 5 . nH 2 O, NaOH, and NH 3 , wherein a concentration of said compound in said solution is in the range of 0.5 wt % to 10 wt %, and wherein n is an integer.
Claim 24
Dependent Claim
14 words
A method according to claim 14, wherein said solution consists essentially of pure water.
Claim 25
Independent Claim
100 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, wherein a variation in energy in a beam section of said laser beam is not more than 10%, and wherein said pulsed laser light is converged by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 26
Independent Claim
100 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 W/cm 2 to 10 11 W/cm 2 , wherein said light is pulsed laser light, wherein a variation in energy in a beam section of said laser beam is not more than 10%, and wherein said pulsed laser light is converged by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 27
Dependent Claim
32 words
A method according to claim 17, wherein said pulsed laser light is converged to a line having a width of 10 μm or more by said cylindrical lens or a cylindrical mirror.
Claim 28
Independent Claim
88 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 360 nm or less, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 -1 J/cm 2 to 5×10 2 J/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 29
Independent Claim
88 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength of 360 nm or less, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 -1 J/cm 2 to 5×10 2 J/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 30
Independent Claim
92 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength in the range of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 -1 J/cm 2 to 5×10 2 J/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 31
Independent Claim
92 words
A method of working diamond by irradiating a surface of said diamond with light, wherein said light has a wavelength in the range of 190 nm to 360 nm, wherein an energy density of said light with which said diamond surface is irradiated is in the range of 10 -1 J/cm 2 to 5×10 2 J/cm 2 , wherein said light is pulsed laser light, and wherein a divergent angle of said laser light when oscillated from a laser oscillator is in the range of 10 -2 mrad to 5×10 -1 mrad.
Claim 32
Dependent Claim
28 words
A method according to claim 20, wherein the half-width of an oscillation spectrum of said laser light is in the range of 10 -4 nm to 1 nm.
Claim 33
Dependent Claim
23 words
A method according to claim 20, wherein a variation in energy in a beam section of said laser light is up to 10%.
Claim 34
Dependent Claim
39 words
A method according to claim 20 or 22, wherein said pulsed laser light is converged to a line having a width of 10 μm or more by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 35
Dependent Claim
28 words
A method according to claim 20 or 22, wherein said pulsed laser light is converged by a cylindrical lens or a cylindrical mirror, to irradiate said diamond surface.
Claim 36
Dependent Claim
54 words
A method according to claim 24, wherein, when said diamond surface is irradiated with said pulsed laser light which is converged by said cylindrical lens or said cylindrical mirror, an incident angle on said diamond surface is in the range of 40 to 85 degrees with respect to a normal of said diamond surface.
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