Patent US4276520A successfully refreshed from Google Patents.
US4276520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable laser device
Assignee: Individual
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Filing: 1979-03-12
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Granted: 1981-06-30
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Expires: 1999-03-12
Abstract
Abstract A device for producing a laser beam or discharge. The device is constructed to be portable having a pistol grip. The laser beam is generated in the body or barrel of the device. A neodymium (Nd:YAG) rod or similar material is within a xenon flash tube to which a voltage is applied. A photon emission source is provided at one end of the (Nd:YAG) rod embodying a diode and a parabolic reflector system associated with a polarized mirror which is partly reflective and which in part transmits energy rays. A polarized optical mirror is provided at the opposite end of the (Nd:YAG) rod. Activation of atoms within the rod is initiated within the contents of an optical or resonant cavity providing a means by which the necessary excitation of atoms within the optical active (Nd:YAG) rod can be achieved in order to initiate an elevation in population and subsequent inversion of levels, near and over the threshold value necessary to generate a laser beam and the subsequent discharge of said beam. Heat dissipating means are provided including nylon phenolic quartz acrylic compound constructed to have a heat transfer gradient. Embedded in the compound is heat transfer means provided by longitudinally positioned microcoil heat pipes whereby the heat is transferred to the rear of the device. At the rear is positioned a heat dissipating cube formed by parallel plates with microcoil heat pipes between them. The evolution of heat is initiated by the transference of heat from the microcoiled heat pipes to the nylon phenolic quartz compound, which subsequently vaporizes as heat is absorbed by the compound, the vapor being released at various portal exits or microvents aft of the laser device.
Inventors
- 👤 Larry Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:39
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/025; H01S3/04; H01S3/042; H01S3/09; H01S3/091; H01S3/0915
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
190 words
A laser beam generating device, comprising (a) a crystalline laser active media of a generally cylindrically shaped crystal of light amplifying material which is capable of producing a coherent light beam, (b) a pump source for said crystal in the form of a spiral shaped flash tube disposed about the crystal which can be pumped to produce light which is readily absorbable by the crystal, (c) electrical power supply means connected to the flash tube for producing a light flash, (d) a resonant cavity including a partially reflecting front mirror and a rear mirror disposed adjacent the end surfaces of the crystal to provide reflectivity along the crystal longitudinal axis, (e) a light emitting arc source means disposed behind the rear mirror and in alignment with the crystal longitudinal axis for producing a high intensity light including a wave length that can pass through the rear mirror and is absorbable by the crystal, and (f) a parabolic light reflecting mirror disposed immediately behind the light emitting arc source means and in alignment with the crystal axis with its focal point disposed at the position of the light emitting arc source.
Claim 2
Dependent Claim
190 words
A laser beam generating device, comprising (a) a crystalline laser active media of a generally cylindrically shaped crystal of light amplifying material which is capable of producing a coherent light beam, (b) a pump source for said crystal in the form of a spiral shaped flash tube disposed about the crystal which can be pumped to produce light which is readily absorbable by the crystal, (c) electrical power supply means connected to the flash tube for producing a light flash, (d) a resonant cavity including a partially reflecting front mirror and a rear mirror disposed adjacent the end surfaces of the crystal to provide reflectivity along the crystal longitudinal axis, (e) a light emitting arc source means disposed behind the rear mirror and in alignment with the crystal longitudinal axis for producing a high intensity light including a wave length that can pass through the rear mirror and is absorbable by the crystal, and (f) a parabolic light reflecting mirror disposed immediately behind the light emitting arc source means and in alignment with the crystal axis with its focal point disposed at the position of the light emitting arc source.
Claim 3
Dependent Claim
39 words
The laser beam generating device as set forth in claim 1, wherein: (a) the rear mirror is partly reflective and partly capable of transmission of light to permit light from the light emitting arc source means to pass therethrough.
Claim 4
Dependent Claim
39 words
The laser beam generating device as set forth in claim 1, wherein: (a) the light emitting arc source means is a photon emitting diode, and (b) the rear mirror allows substantially 90% transmission of emissive radiation from the diode.
Claim 5
Dependent Claim
195 words
A laser beam generating device, comprising: (a) a crystalline laser active media of a generally cylindrically shaped crystal of light amplifying material which is capable of producing a coherent light beam, (b) a pump source for said crystal in the form of a spiral shaped flash tube disposed about the crystal which can be pumped to produce light which is readily absorbable by the crystal, (c) electrical power supply means connected to the flash tube for producing a light flash, (d) a resonant cavity including a partially reflecting front mirror and a rear mirror disposed adjacent the end surfaces of the crystal to provide reflectivity along the crystal longitudinal axis, (e) a cylindrical housing disposed adjacent and around the flash tube and having a forward opening in line with the longitudinal axis of the crystal and directly in front of the front mirror, (f) heat absorbing and transfer means within the housing and surrounding the flash tube for absorbing heat and transferring it to the rear of the housing, and (g) heat dissipating means disposed within the housing and adjacent the rear of the housing for receiving heat and conveying it out through the housing.
Claim 6
Dependent Claim
195 words
A laser beam generating device, comprising: (a) a crystalline laser active media of a generally cylindrically shaped crystal of light amplifying material which is capable of producing a coherent light beam, (b) a pump source for said crystal in the form of a spiral shaped flash tube disposed about the crystal which can be pumped to produce light which is readily absorbable by the crystal, (c) electrical power supply means connected to the flash tube for producing a light flash, (d) a resonant cavity including a partially reflecting front mirror and a rear mirror disposed adjacent the end surfaces of the crystal to provide reflectivity along the crystal longitudinal axis, (e) a cylindrical housing disposed adjacent and around the flash tube and having a forward opening in line with the longitudinal axis of the crystal and directly in front of the front mirror, (f) heat absorbing and transfer means within the housing and surrounding the flash tube for absorbing heat and transferring it to the rear of the housing, and (g) heat dissipating means disposed within the housing and adjacent the rear of the housing for receiving heat and conveying it out through the housing.
Claim 7
Dependent Claim
36 words
The laser beam generating device as set forth in claim 4, wherein: (a) the cylindrical housing has vents therethrough which are disposed adjacent the rear of the housing and are part of the heat dissipating means.
Claim 8
Dependent Claim
49 words
The laser beam generating device as set forth in claim 4, wherein: (a) the heat absorbing and transferring means includes a plurality of longitudinally extending heat pipes, and (b) the heat pipes extend substantially the length of the cylindrical housing and conduct heat toward the rear of the housing.
Claim 9
Dependent Claim
60 words
The laser beam generating device as set forth in claim 4, wherein: (a) the heat dissipating means is disposed adjacent the rear of the housing and the rear mirror, and (b) the heat dissipating means includes a plurality of parallel heat transfer plates which are in contact with a plurality of heat pipes which extend parallel to the housing axis.
Claim 10
Dependent Claim
63 words
The laser beam generating device as set forth in claim 4, wherein: (a) the cylindrical housing has a series of vents at the rear thereof, and (b) the heat absorbing and transferring means includes a cylindrical assembly of longitudinally extending heat pipes embedded within an organic compound which vaporizes within a temperature range which is at the higher level of operably acceptable temperature.
Claim 11
Dependent Claim
95 words
The laser beam generating device as set forth in claim 4, wherein: (a) a light emitting arc source means is disposed behind the rear mirror and in alignment with the crystal longitudinal axis for producing a high intensity light including a wave length that can pass through the rear mirror and is absorbable by the crystal, and (b) a parabolic light reflecting mirror is disposed immediately behind the light emitting arc source means and in alignment with the crystal axis with its focal point disposed at the position of the light emitting arc source means.
Claim 12
Dependent Claim
26 words
The laser beam generating device of claim 4, wherein: (a) the heat absorbing and transferring means includes a plurality of spaced, longitudinally extending coiled heat pipes.
Claim 13
Dependent Claim
29 words
The laser beam generating device as set forth in claim 10, wherein: (a) the heat pipes are embedded in an acrylic compound which vaporizes within a preselected temperature range.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |