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US5317348A
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US
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Full color solid state laser projector system
Assignee: Individual
•
Filing: 1992-12-01
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Granted: 1994-05-31
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Expires: 2012-12-01
Abstract
Abstract This invention uses various solid-state semiconductor lasers along with frequency doublers as needed to achieve the required three-color light beam wavelengths for input to available light combiners and to a state-of-the-art scanner. The scanner projects a color laser beam to a screen or other equipment. A number of alternate solid-state laser means are described, each combination providing the required light output. Use of the described solid-state lasers instead of the commonly used gas lasers results in considerable savings in required electrical power, cooling and system size.
Inventors
- 👤 Randall J. Knize
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3129; G; G02; G02F; G02F1/00; G02F1/35; G02F1/353; G02F1/3532
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
271 words
A full color solid-state laser projector system comprising: a red solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 610-640 nm wavelength; a red light modulator means; said red light modulator means receiving the laser light produced by said red solid-state laser means and operating to produce a red laser beam; a green solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 510-540 wavelength; a green light modulator means; said green light modulator means receiving the laser light produced by said green solid-state laser means and operating to produce a green laser beam; a blue solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 460-480 nm wavelength; a blue light modulator means; said blue light modulator means receiving the laser light produced by said blue solid-state laser means and operating to produce a blue laser beam; a first combiner means and a second combiner means, and a scanner means; said second combiner means receiving said red and green laser beams produced by said red and green modulator means, and combining said beams to produce a red/green laser beam directed at said first combiner means; said first combiner means receiving said blue laser beam produced by said blue modulator means, and combining said blue laser beam with said red/green laser beam to produce a combination of red, green and blue laser light which is directed at said scanner means; said scanner means receiving said combination laser light and operating to produce a laser beam output for a screen or other equipment.
Claim 2
Dependent Claim
271 words
A full color solid-state laser projector system comprising: a red solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 610-640 nm wavelength; a red light modulator means; said red light modulator means receiving the laser light produced by said red solid-state laser means and operating to produce a red laser beam; a green solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 510-540 wavelength; a green light modulator means; said green light modulator means receiving the laser light produced by said green solid-state laser means and operating to produce a green laser beam; a blue solid-state laser means based upon semiconductor lasers operating to produce a light beam at a proximate 460-480 nm wavelength; a blue light modulator means; said blue light modulator means receiving the laser light produced by said blue solid-state laser means and operating to produce a blue laser beam; a first combiner means and a second combiner means, and a scanner means; said second combiner means receiving said red and green laser beams produced by said red and green modulator means, and combining said beams to produce a red/green laser beam directed at said first combiner means; said first combiner means receiving said blue laser beam produced by said blue modulator means, and combining said blue laser beam with said red/green laser beam to produce a combination of red, green and blue laser light which is directed at said scanner means; said scanner means receiving said combination laser light and operating to produce a laser beam output for a screen or other equipment.
Claim 3
Dependent Claim
35 words
The laser projector system as recited in claim 1, wherein said red solid-state laser means includes a CW type, Indium/ Gallium/ Phosphor (In Ga P) diode laser operating at a proximate wavelength of 610-640 nm.
Claim 4
Dependent Claim
34 words
The laser projector system as recited in claim 1, wherein said green solid-state laser means includes a CW type, Zinc/ Selenium (Zn Se) diode laser operating at a a proximate wavelength of 510-530 nm.
Claim 5
Dependent Claim
106 words
The laser projector system as recited in claim 1, wherein said green solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As) diode laser operating at a proximate wavelength of 800 nm; a Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; said Nd: YAG laser being pumped by the output of said Ga Al As diode laser to produce a laser output beam having a proximate wavelength of 1064 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said Nd: YAG laser and producing a green laser beam having a proximate wavelength of 532 nm.
Claim 6
Dependent Claim
74 words
The laser projector system as recited in claim 1, wherein said green solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As ) diode laser operating at a proximate wavelength of 800 nm; and a Neodymium/ Yttrium/ Aluminum/ Borate (Nd: YAB) laser; said Nd: YAB laser being pumped by said Ga Al As laser and operating to produce a green laser beam having a proximate wavelength of 531 nm.
Claim 7
Dependent Claim
75 words
The laser projector system as recited in claim 1, wherein said green solid-state laser means includes and comprises: a CW type, Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; and a doped glass fiber laser; said glass fiber laser being doped with a suitable lanthanide such as Praseodymium (Pr) or Erbium (Er); said glass fiber laser being pumped by said Nd: YAG laser to produce a green laser beam having a proximate wavelength of 510-540 nm.
Claim 8
Dependent Claim
33 words
The laser projector system as recited in claim 1, wherein said blue solid-state laser means includes a CW type, Zinc/ Selenium (Zn Se) diode laser operating at a proximate wavelength of 460-480 nm.
Claim 9
Dependent Claim
70 words
The laser projector system as recited in claim 1, wherein said blue solid-state laser means includes and comprises: a CW type, Indium/ Gallium/ Arsenic (In Ga As) diode laser operating at a proximate wavelength of 920-980 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said In GA As laser and producing a blue laser beam having a proximate wavelength of 460-490 nm.
Claim 10
Dependent Claim
106 words
The laser projector system as recited in claim 1, wherein said blue solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As) diode laser operating at a proximate wavelength of 800 nm; a Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; said Nd: YAG laser being pumped by the output of said Ga Al As diode laser to produce a laser output beam having a proximate wavelength of 946 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said Nd: YAG laser and producing a blue laser beam having a proximate wavelength of 473 nm.
Claim 11
Dependent Claim
75 words
The laser projector system as recited in claim 1, wherein said blue solid-state laser means includes and comprises: a CW type, Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; and a doped glass fiber laser; said glass fiber laser being doped with a suitable lanthanide such as Praseodymium (Pr) or Erbium (Er); said glass fiber laser being pumped by said Nd: YAG laser to produce a blue laser beam having a proximate wavelength of 460-480 nm.
Claim 12
Dependent Claim
206 words
A full color solid-state laser projector system comprising: a red solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a red laser beam at a proximate 610-640 nm wavelength; a green solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a green laser beam at a proximate 510-540 nm wavelength; a blue solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a blue laser beam at a proximate 460-480 nm wavelength; a first combiner means and a second combiner means; and a scanner means; said second combiner means receiving said red and green laser beams produced by said red and green solid-state laser means, and combining said laser beams to produce a red/green laser beam directed at said first combiner means; said first combiner means receiving said blue laser beam produced by said blue solid-state laser means, and combining said blue laser beam with said red/green laser beam to produce a combination of red, green and blue laser light which is directed at said scanner means; said scanner means receiving said combination laser light and operating to produce a laser beam output for a screen or other equipment.
Claim 13
Dependent Claim
206 words
A full color solid-state laser projector system comprising: a red solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a red laser beam at a proximate 610-640 nm wavelength; a green solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a green laser beam at a proximate 510-540 nm wavelength; a blue solid-state laser means based upon semiconductor lasers, having a modulating voltage/current input signal and producing a blue laser beam at a proximate 460-480 nm wavelength; a first combiner means and a second combiner means; and a scanner means; said second combiner means receiving said red and green laser beams produced by said red and green solid-state laser means, and combining said laser beams to produce a red/green laser beam directed at said first combiner means; said first combiner means receiving said blue laser beam produced by said blue solid-state laser means, and combining said blue laser beam with said red/green laser beam to produce a combination of red, green and blue laser light which is directed at said scanner means; said scanner means receiving said combination laser light and operating to produce a laser beam output for a screen or other equipment.
Claim 14
Dependent Claim
35 words
The laser projector system as recited in claim 11, wherein said red solid-state laser means includes a CW type, Indium/ Gallium/ Phosphor (In Ga P) diode laser operating at a proximate wavelength of 610-640 nm.
Claim 15
Dependent Claim
33 words
The laser projector system as recited in claim 11, wherein said green solid-state laser means includes a CW type, Zinc/ Selenium (Zn Se) diode laser operating at a proximate wavelength of 510-530 nm.
Claim 16
Dependent Claim
106 words
The laser projector system as recited in claim 11, wherein said green solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As) diode laser operating at a proximate wavelength of 800 nm; a Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; said Nd: YAG laser being pumped by the output of said Ga Al As diode laser to produce a laser output beam having a proximate wavelength of 1064 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said Nd: YAG laser and producing a green laser beam having a proximate wavelength of 532 nm.
Claim 17
Dependent Claim
73 words
The laser projector system as recited in claim 11, wherein said green solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As) diode laser operating at a proximate wavelength of 800 nm; and a Neodymium/ Yttrium/ Aluminum/ Borate (Nd: YAB) laser; said Nd: YAB laser being pumped by said Ga Al As laser and operating to produce a green laser beam having a proximate wavelength of 531 nm.
Claim 18
Dependent Claim
75 words
The laser projector system as recited in claim 11, wherein said green solid-state laser means includes and comprises: a CW type, Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; and a doped glass fiber laser; said glass fiber laser being doped with a suitable lanthanide such as Praseodymium (Pr) or Erbium (Er); said glass fiber laser being pumped by said Nd: YAG laser to produce a green laser beam having a proximate wavelength of 510-540 nm.
Claim 19
Dependent Claim
33 words
The laser projector system as recited in claim 11, wherein said blue solid-state laser means includes a CW type, Zinc/ Selenium (Zn Se) diode laser operating at a proximate wavelength of 460-480 nm.
Claim 20
Dependent Claim
70 words
The laser projector system as recited in claim 11, wherein said blue solid-state laser means includes and comprises: a CW type, Indium/ Gallium/ Arsenic (In Ga As) diode laser operating at a proximate wavelength of 920-980 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said In GA As laser and producing a blue laser beam having a proximate wavelength of 460-490 nm.
Claim 21
Dependent Claim
106 words
The laser projector system as recited in claim 11, wherein said blue solid-state laser means includes and comprises: a CW type, Gallium/ Aluminum/ Arsenic (Ga Al As) diode laser operating at a proximate wavelength of 800 nm; a Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; said Nd: YAG laser being pumped by the output of said Ga Al As diode laser to produce a laser output beam having a proximate wavelength of 946 nm; and a frequency doubler means; said frequency doubler operating on the laser output beam of said Nd: YAG laser and producing a blue laser beam having a proximate wavelength of 473 nm.
Claim 22
Dependent Claim
75 words
The laser projector system as recited in claim 11, wherein said blue solid-state laser means includes and comprises: a CW type, Neodymium/ Yttrium/ Aluminum/ Garnet (Nd: YAG) laser; and a doped glass fiber laser; said glass fiber laser being doped with a suitable lanthanide such as Praseodymium (Pr) or Erbium (Er); said glass fiber laser being pumped by said Nd: YAG laser to produce a blue laser beam having a proximate wavelength of 460-480 nm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-30 | 1997-11-29 | 1998-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-30 | 2001-11-29 | 2002-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-30 | 2005-11-29 | 2006-05-31 | $7700.00 | Window Closed / Lapsed |