CA918474A - Coherent optical noise suppression apparatus - Google Patents
Coherent optical noise suppression apparatusInfo
- Publication number
- CA918474A CA918474A CA082976A CA82976A CA918474A CA 918474 A CA918474 A CA 918474A CA 082976 A CA082976 A CA 082976A CA 82976 A CA82976 A CA 82976A CA 918474 A CA918474 A CA 918474A
- Authority
- CA
- Canada
- Prior art keywords
- noise suppression
- coherent optical
- suppression apparatus
- optical noise
- coherent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001427 coherent effect Effects 0.000 title 1
- 230000003287 optical effect Effects 0.000 title 1
- 230000001629 suppression Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/32—Systems for obtaining speckle elimination
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83390669A | 1969-06-17 | 1969-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA918474A true CA918474A (en) | 1973-01-09 |
Family
ID=25265580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA082976A Expired CA918474A (en) | 1969-06-17 | 1970-05-19 | Coherent optical noise suppression apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US3588217A (en) |
JP (1) | JPS4948979B1 (en) |
CA (1) | CA918474A (en) |
CH (1) | CH500511A (en) |
FR (1) | FR2052340A5 (en) |
GB (1) | GB1291340A (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4155630A (en) * | 1977-11-17 | 1979-05-22 | University Of Delaware | Speckle elimination by random spatial phase modulation |
JPS5924823A (en) * | 1982-07-30 | 1984-02-08 | Leo Giken:Kk | Device for effacing influence of speckle of output light of optical fiber |
DE19704741A1 (en) | 1997-02-13 | 1998-08-20 | Daimler Benz Ag | Holographic screen with integrated speckle suppression |
US6791739B2 (en) | 2001-08-08 | 2004-09-14 | Eastman Kodak Company | Electro-optic despeckling modulator and method of use |
US6594090B2 (en) | 2001-08-27 | 2003-07-15 | Eastman Kodak Company | Laser projection display system |
US6577429B1 (en) | 2002-01-15 | 2003-06-10 | Eastman Kodak Company | Laser projection display system |
US6810175B1 (en) * | 2002-04-22 | 2004-10-26 | Terabeam Corporation | Off-axis mode scrambler |
USRE44472E1 (en) | 2002-04-22 | 2013-09-03 | Pertex Telecommunication Llc | Extended source transmitter for free space optical communication systems |
WO2004106999A1 (en) * | 2003-05-28 | 2004-12-09 | Corning Incorporated | Methods of generating and transporting short wavelength radiation and apparati used therein |
JP5058798B2 (en) * | 2005-07-11 | 2012-10-24 | 三菱電機株式会社 | Lighting device |
WO2007007389A1 (en) * | 2005-07-11 | 2007-01-18 | Mitsubishi Denki Kabushiki Kaisha | Speckle removing light source and illuminator |
US7457330B2 (en) | 2006-06-15 | 2008-11-25 | Pavilion Integration Corporation | Low speckle noise monolithic microchip RGB lasers |
GB2462444A (en) * | 2008-08-06 | 2010-02-10 | Optyka Ltd | Image projection apparatus and method |
US7969644B2 (en) * | 2008-09-02 | 2011-06-28 | Elbit Systems Of America, Llc | System and method for despeckling an image illuminated by a coherent light source |
GB2467181B (en) * | 2009-01-27 | 2014-03-05 | Optyka Ltd | Speckle removal for a laser scanning projector |
US8437059B2 (en) * | 2010-01-21 | 2013-05-07 | Technion Research & Development Foundation Limited | Method for reconstructing a holographic projection |
EP2354638A1 (en) * | 2010-02-09 | 2011-08-10 | Koninklijke Philips Electronics N.V. | Lighting apparatus for generating a decorative illumination pattern |
US9158063B2 (en) * | 2011-07-07 | 2015-10-13 | Reald Inc. | Apparatus for despeckling laser systems and methods thereof |
CN103364956B (en) * | 2012-03-29 | 2016-01-06 | 山东华光光电子有限公司 | A kind of method of optical fiber Output of laser homogenising dissipation spot and device |
CN103293700A (en) * | 2013-05-20 | 2013-09-11 | 北京航空航天大学 | Optical mixing rod vibration structure for laser illumination speckle reduction |
US20210181518A1 (en) * | 2019-12-13 | 2021-06-17 | Hamamatsu Photonics K.K. | Light source module |
-
1969
- 1969-06-17 US US833906A patent/US3588217A/en not_active Expired - Lifetime
-
1970
- 1970-04-28 FR FR7015363A patent/FR2052340A5/fr not_active Expired
- 1970-05-19 CA CA082976A patent/CA918474A/en not_active Expired
- 1970-05-29 CH CH803970A patent/CH500511A/en not_active IP Right Cessation
- 1970-06-03 GB GB26717/70A patent/GB1291340A/en not_active Expired
- 1970-06-05 JP JP45048133A patent/JPS4948979B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2029218B2 (en) | 1977-04-07 |
FR2052340A5 (en) | 1971-04-09 |
US3588217A (en) | 1971-06-28 |
JPS4948979B1 (en) | 1974-12-24 |
DE2029218A1 (en) | 1971-01-07 |
CH500511A (en) | 1970-12-15 |
GB1291340A (en) | 1972-10-04 |
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