US5020880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low distortion window for use with high energy lasers
Assignee: RTX Corp
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Filing: 1990-03-13
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Granted: 1991-06-04
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Expires: 2010-03-13
Abstract
Abstract A window for use with high energy laser (HEL) systems utilizes a combination of window and cooled mirror technologies. The present window is adapted to receive an elongated focus beam at one or more adjacent diamond plates. The plates are positioned in base members by peripheral edges thereof. Heat generated by the absorption of radiation from the beam is transferred directly to heat exchangers in the base members through the peripheral edges. The geometry of the window ensures that heat transfer is bidirectional. The very short distance the heat must travel results in a very small rise in temperature of the window with a correspondingly small amount of optical distortion.
Inventors
- 👤 John Bluege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:52
CPC Classifications
G; G02; G02B; G02B5/00; B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/0604; B23K26/064; B23K26/066; B23K26/073; B23K26/0738; B23K26/12; B23K26/127; B23K26/70; B23K26/702; B23K26/703; G02B7/00; G02B7/18; G02B7/181; G02B7/1815; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
A window for transmitting radiation distributed over an axis, comprising: a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members adapted to receive said transmission element means along opposed ones of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means having a length to width ratio substantially greater than one such that substantially all of said energy portion is transferred to said first and second base members.
Claim 2
Dependent Claim
133 words
A window for transmitting radiation distributed over an axis, comprising: a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members adapted to receive said transmission element means along opposed ones of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means having a length to width ratio substantially greater than one such that substantially all of said energy portion is transferred to said first and second base members.
Claim 3
Dependent Claim
24 words
The window of claim 1, wherein said first and second base members further comprise heat exchanger means configured therein adapted to receive flowing coolant.
Claim 4
Dependent Claim
28 words
The window of claim 1, wherein said transmission element means comprises a material selected from the group consisting essentially of diamond, beryllium oxide (BeO), aluminum oxide and silicon.
Claim 5
Dependent Claim
22 words
The window of claim 1, wherein said transmission element means is oriented at Brewster's angle with respect to the radiation presented thereto.
Claim 6
Dependent Claim
39 words
The window of claim 1, wherein said transmission element means comprises a plurality of plates configured along said axis, with each plate having a side surface extending between said members adapted to receive an adjacent one of said plates.
Claim 7
Dependent Claim
13 words
The window of claim 5, wherein said plate side surfaces are optically flat.
Claim 8
Dependent Claim
19 words
The window of claim 1, wherein said transmission element means has a length to width ratio of approximately 10:1.
Claim 9
Dependent Claim
21 words
The window of claim 1, wherein said transmission element means opposed surfaces are recessed in said first and second base members.
Claim 10
Dependent Claim
19 words
The window of claim 1, wherein said transmission element means has a length to width ratio of approximately 2:1.
Claim 11
Dependent Claim
144 words
A window for transmitting radiation distributed over an axis, comprising: a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members comprising a material selected from the group consisting essentially of molybdenum, silicon carbide and copper adapted to receive said transmission element means along opposed surfaces of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means width and length having a ratio such that substantially all of said energy portion is transferred to said first and second base members.
Claim 12
Dependent Claim
144 words
A window for transmitting radiation distributed over an axis, comprising: a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members comprising a material selected from the group consisting essentially of molybdenum, silicon carbide and copper adapted to receive said transmission element means along opposed surfaces of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means width and length having a ratio such that substantially all of said energy portion is transferred to said first and second base members.
Claim 13
Independent Claim
174 words
A system for providing a high energy beam of radiation, said system comprising: a radiation source means for generating a beam of high energy radiation; a lens means for receiving said beam and for focusing said beam such that a beam energy density extends along an axis; a window for transmitting said focused beam including; a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members adapted to receive said transmission element means along opposed ones of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means having a length to width ratio such that substantially all of said energy portion is transferred to said first and second base members.
Claim 14
Independent Claim
174 words
A system for providing a high energy beam of radiation, said system comprising: a radiation source means for generating a beam of high energy radiation; a lens means for receiving said beam and for focusing said beam such that a beam energy density extends along an axis; a window for transmitting said focused beam including; a transmission element means having a width, a length and outer peripheral surfaces, said transmission element means receiving and transmitting said radiation with a portion of the energy thereof absorbed by said transmission element means; and first and second base members adapted to receive said transmission element means along opposed ones of the peripheral surfaces which are parallel to said axis; said first and second members locating said transmission element means such that said axis is centrally positioned along the length of said transmission element means and dissipating said absorbed energy portion; said transmission element means having a length to width ratio such that substantially all of said energy portion is transferred to said first and second base members.
Claim 15
Dependent Claim
24 words
The window of claim 11, wherein said first and second base members further comprise heat exchanger means configured therein adapted to receive flowing coolant.
Claim 16
Dependent Claim
27 words
The window of claim 11, wherein said first and base second members comprise a material selected from the group consisting essentially of molybdenum, silicon carbide and copper.
Claim 17
Dependent Claim
28 words
The window of claim 11, wherein said transmission element means comprises a material selected from the group consisting essentially of diamond, beryllium oxide (BeO), aluminum oxide and silicon.
Claim 18
Dependent Claim
22 words
The window of claim 11, wherein said transmission element means is oriented at Brewster's angle with respect to the radiation presented thereto.
Claim 19
Dependent Claim
39 words
The window of claim 11, wherein said transmission element means comprises a plurality of plates configured along said axis, with each plate having a side surface extending between said members adapted to receive an adjacent one of said plates.
Claim 20
Dependent Claim
13 words
The window of claim 16, wherein said plate side surfaces are optically flat.
Claim 21
Dependent Claim
19 words
The window of claim 11, wherein said transmission element means has a length to width ratio of approximately 10:1.
Claim 22
Dependent Claim
21 words
The window of claim 11, wherein said transmission element means opposed surfaces are recessed in said first and second base members.
References Cited (Backward Citations)
US3895313A
Cited
US3894795A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |