JPS5647019A - Aberration correcting method of hologram scanner - Google Patents
Aberration correcting method of hologram scannerInfo
- Publication number
- JPS5647019A JPS5647019A JP12286579A JP12286579A JPS5647019A JP S5647019 A JPS5647019 A JP S5647019A JP 12286579 A JP12286579 A JP 12286579A JP 12286579 A JP12286579 A JP 12286579A JP S5647019 A JPS5647019 A JP S5647019A
- Authority
- JP
- Japan
- Prior art keywords
- wavelength
- scanning
- light
- monochromatic light
- aberration correcting
- 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.)
- Granted
Links
Landscapes
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE: To make aberration correcting effect better by irradiating the monochromatic light of the wavelength longer than the interference light to the holographic zone plate having been recorded with interference fringes by said interference light and scanning the irradiated light.
CONSTITUTION: One coherent beam 16 is converted to the convergent spherical wave converging at a point 18 by a lens 17 and the other beam 18 is converted to the divergent spherical wave diverging from a point 21 by a lens 20. These interfere on a hologram recording surface 22 and form interference fringes which are then recorded on the hologram recording surface 22, for example, holographic dry plate. If this is used as a hologram scanner and is scanned with the monochromatic light of the wavelength longer than the manufacturing wavelength, the convergent distance of the scanning beam for angle of diffraction (scanning angle) becomes like a curve 23 and if scanned by the monochromatic light of the same wavelength as the manufacturing wavelength, it becomes like a curve 24. In this way, the effect of aberration correction may be bettered by scanning with the monochromatic light of the wavelength longer than the manufacturing wavelength.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12286579A JPS5647019A (en) | 1979-09-25 | 1979-09-25 | Aberration correcting method of hologram scanner |
US06/161,970 US4378142A (en) | 1979-06-21 | 1980-06-23 | Hologram made by using a plurality of spherical waves and a device for laser beam scanning by using the hologram |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12286579A JPS5647019A (en) | 1979-09-25 | 1979-09-25 | Aberration correcting method of hologram scanner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5647019A true JPS5647019A (en) | 1981-04-28 |
JPS6348043B2 JPS6348043B2 (en) | 1988-09-27 |
Family
ID=14846541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12286579A Granted JPS5647019A (en) | 1979-06-21 | 1979-09-25 | Aberration correcting method of hologram scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647019A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS572018A (en) * | 1980-06-06 | 1982-01-07 | Fujitsu Ltd | Light scanner |
JPS6035701A (en) * | 1983-08-06 | 1985-02-23 | Canon Inc | Formation of hologram element |
JPS6042733A (en) * | 1983-08-18 | 1985-03-07 | Yokogawa Hokushin Electric Corp | Optical scanner using hologram |
JPS60156525U (en) * | 1984-03-28 | 1985-10-18 | 横河電機株式会社 | optical scanning device |
JPS60243689A (en) * | 1984-05-18 | 1985-12-03 | Canon Inc | Preparation of hologram |
JPS61149918A (en) * | 1984-12-24 | 1986-07-08 | Nec Corp | Light beam scanning device |
US4925262A (en) * | 1983-04-13 | 1990-05-15 | Fujitsu Limited | Method and apparatus for light beam scanning using a hologram |
US4957336A (en) * | 1985-07-31 | 1990-09-18 | Fujitsu Limited | Laser beam scanner and its fabricating method |
US5955721A (en) * | 1994-08-17 | 1999-09-21 | Metrologic Instruments, Inc. | Holographic scanning system with high-resolution 2-D a scanning field steerable within 3-D scanning volume |
US5975419A (en) * | 1994-08-17 | 1999-11-02 | Metrologic Instruments, Inc. | Holographic laser scanner generating a high-resolution 2-D raster scanning pattern using a holographic scanning disc |
US6003772A (en) * | 1994-08-17 | 1999-12-21 | Metrologic Instruments, Inc. | Holographic laser scanning system employing holographic scanning disc having dual-fringe contrast regions for optimized laser beam scanning and light collection operations |
US6006993A (en) * | 1994-08-17 | 1999-12-28 | Metrologic Instruments, Inc. | Holographic laser scanning system for carrying out laser beam scanning operations with improved scan angle multiplication efficiency and carrying out light collection operations with improved light collection efficiency |
US6085978A (en) * | 1994-08-17 | 2000-07-11 | Metrologic Instruments, Inc. | Holographic laser scanners of modular construction and method and apparatus for designing and manufacturing the same |
US6158659A (en) * | 1994-08-17 | 2000-12-12 | Metrologic Instruments, Inc. | Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes |
US6547144B1 (en) | 1994-08-17 | 2003-04-15 | Metrologic Instruments, Inc. | Holographic laser scanning system for carrying out light collection operations with improved light collection efficiency |
US6619550B1 (en) | 1995-12-18 | 2003-09-16 | Metrologic Instruments, Inc. | Automated tunnel-type laser scanning system employing corner-projected orthogonal laser scanning patterns for enhanced reading of ladder and picket fence oriented bar codes on packages moving therethrough |
US6758402B1 (en) | 1994-08-17 | 2004-07-06 | Metrologic Instruments, Inc. | Bioptical holographic laser scanning system |
US7051922B2 (en) | 1994-08-17 | 2006-05-30 | Metrologic Instruments, Inc. | Compact bioptical laser scanning system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5453553A (en) * | 1977-10-05 | 1979-04-26 | Fujitsu Ltd | Recording and reconstructing method of hologram |
-
1979
- 1979-09-25 JP JP12286579A patent/JPS5647019A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5453553A (en) * | 1977-10-05 | 1979-04-26 | Fujitsu Ltd | Recording and reconstructing method of hologram |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS572018A (en) * | 1980-06-06 | 1982-01-07 | Fujitsu Ltd | Light scanner |
US4639071A (en) * | 1980-06-06 | 1987-01-27 | Fujitsu Limited | Light scanning apparatus |
JPH0261008B2 (en) * | 1980-06-06 | 1990-12-18 | Fujitsu Ltd | |
US4925262A (en) * | 1983-04-13 | 1990-05-15 | Fujitsu Limited | Method and apparatus for light beam scanning using a hologram |
JPS6035701A (en) * | 1983-08-06 | 1985-02-23 | Canon Inc | Formation of hologram element |
JPS6042733A (en) * | 1983-08-18 | 1985-03-07 | Yokogawa Hokushin Electric Corp | Optical scanner using hologram |
US4768847A (en) * | 1983-08-18 | 1988-09-06 | Yokogawa Electric Corporation | Hologram scanner |
JPS60156525U (en) * | 1984-03-28 | 1985-10-18 | 横河電機株式会社 | optical scanning device |
JPS60243689A (en) * | 1984-05-18 | 1985-12-03 | Canon Inc | Preparation of hologram |
JPS61149918A (en) * | 1984-12-24 | 1986-07-08 | Nec Corp | Light beam scanning device |
US4957336A (en) * | 1985-07-31 | 1990-09-18 | Fujitsu Limited | Laser beam scanner and its fabricating method |
US6085978A (en) * | 1994-08-17 | 2000-07-11 | Metrologic Instruments, Inc. | Holographic laser scanners of modular construction and method and apparatus for designing and manufacturing the same |
US6415980B1 (en) | 1994-08-17 | 2002-07-09 | Metrologic Instruments, Inc. | Holographic laser scanning system for laser scanning of bar code symbols within 3-D scanning volume having a large depth field |
US5984185A (en) * | 1994-08-17 | 1999-11-16 | Metrologic Instruments, Inc. | Laser scanning system employing parabolic light collection surfaces having optical axes disposed off the Bragg angle of the holographic optical elements of the holographic scanning disc thereof |
US6003772A (en) * | 1994-08-17 | 1999-12-21 | Metrologic Instruments, Inc. | Holographic laser scanning system employing holographic scanning disc having dual-fringe contrast regions for optimized laser beam scanning and light collection operations |
US6006993A (en) * | 1994-08-17 | 1999-12-28 | Metrologic Instruments, Inc. | Holographic laser scanning system for carrying out laser beam scanning operations with improved scan angle multiplication efficiency and carrying out light collection operations with improved light collection efficiency |
US6024282A (en) * | 1994-08-17 | 2000-02-15 | Metrologic Instruments, Inc. | Holographic laser scanning system for omni-directional laser scanning of bar code symbols with 3-D scanning volume having a large depth of field |
US6062479A (en) * | 1994-08-17 | 2000-05-16 | Metrologic Instruments, Inc. | Holographic laser scanning system and process and apparatus and methods for designing and constructing the same |
US6073846A (en) * | 1994-08-17 | 2000-06-13 | Metrologic Instruments, Inc. | Holographic laser scanning system and process and apparatus and method |
US6085980A (en) * | 1994-08-17 | 2000-07-11 | Metrologic Instruments, Inc. | Holographic laser scanning system for producing an omni-directional scanning pattern within a 3-D scanning volume |
US5955721A (en) * | 1994-08-17 | 1999-09-21 | Metrologic Instruments, Inc. | Holographic scanning system with high-resolution 2-D a scanning field steerable within 3-D scanning volume |
US6158659A (en) * | 1994-08-17 | 2000-12-12 | Metrologic Instruments, Inc. | Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes |
US6199759B1 (en) * | 1994-08-17 | 2001-03-13 | Metrologic Instruments, Inc. | Bar code symbol scanning system having a holographic laser scanning disc utilizing maximum light collection surface area thereof and having scanning facets with optimized light collection efficiency |
US6290132B1 (en) | 1994-08-17 | 2001-09-18 | Metrologic Instruments, Inc. | Holographic-based bar code symbol position detection system for producing bar code symbol position data specifying the position of a detected bar code symbol within a 3-D scanning volume above a conveyor belt structure |
US6328215B1 (en) | 1994-08-17 | 2001-12-11 | Metrologic Instruments, Inc. | Method and system for automatically identifying packages during package sortation operations manually carried out by a human operator |
US6375074B1 (en) | 1994-08-17 | 2002-04-23 | Metrologic Instruments, Inc. | Holographic laser scanner for producing a highly-defined three-dimensional scanning volume having multiple focal regions within which the laser scanlines are spatially confined |
US5975419A (en) * | 1994-08-17 | 1999-11-02 | Metrologic Instruments, Inc. | Holographic laser scanner generating a high-resolution 2-D raster scanning pattern using a holographic scanning disc |
US6422466B1 (en) | 1994-08-17 | 2002-07-23 | Metrologic Instruments, Inc. | Method of and system for automatically identifying packages during package transport operations carried out by a human operator walking through the doorway of a storage container |
US6439462B1 (en) | 1994-08-17 | 2002-08-27 | Metrologic Instruments, Inc. | Conveyor-belt mounted bar code symbol reading system employing a steerable bar code symbol scanner to automatically scan bar code symbols detected by a holographic-based bar code position detector |
US6457646B1 (en) | 1994-08-17 | 2002-10-01 | Metrologic Instruments, Inc. | Laser code symbol scanning system with high-resolution 2-D scanning field steerable with 3-D scanning volume |
US6474556B2 (en) | 1994-08-17 | 2002-11-05 | Metrologic Instruments, Inc. | Laser scanning system mounted over a conveyor belt along which packages bearing bar code symbols are transported and scanned |
US6530522B1 (en) | 1994-08-17 | 2003-03-11 | Metrologic Instruments, Inc. | Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes |
US6547144B1 (en) | 1994-08-17 | 2003-04-15 | Metrologic Instruments, Inc. | Holographic laser scanning system for carrying out light collection operations with improved light collection efficiency |
US6561424B1 (en) | 1994-08-17 | 2003-05-13 | Metrologic Instruments, Inc. | Method of and system for automatically identifying packages during package transport operations carried out by a human operator walking through the doorway of a storage warehouse |
US7407103B2 (en) | 1994-08-17 | 2008-08-05 | Metrologic Instruments, Inc. | Bioptical holographic laser scanning system |
US6758402B1 (en) | 1994-08-17 | 2004-07-06 | Metrologic Instruments, Inc. | Bioptical holographic laser scanning system |
US6840449B2 (en) | 1994-08-17 | 2005-01-11 | Metrologic Instruments, Inc. | Laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes |
US6953153B2 (en) | 1994-08-17 | 2005-10-11 | Metrologic Instruments, Inc. | Compact holographic laser scanner having minimized housing dimensions determined by scanning disc and beam folding mirror parameters |
US6991167B2 (en) | 1994-08-17 | 2006-01-31 | Metrologic Instruments, Inc. | Bioptical laser scanning system providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale (POS) station |
US7051922B2 (en) | 1994-08-17 | 2006-05-30 | Metrologic Instruments, Inc. | Compact bioptical laser scanning system |
US7152796B2 (en) | 1994-08-17 | 2006-12-26 | Metrologic Instruments, Inc. | Bar code symbol scanning system having multiple scanning stations for producing a 3-D scanning volume free of substantially and temporally coincident scanning planes |
US6619550B1 (en) | 1995-12-18 | 2003-09-16 | Metrologic Instruments, Inc. | Automated tunnel-type laser scanning system employing corner-projected orthogonal laser scanning patterns for enhanced reading of ladder and picket fence oriented bar codes on packages moving therethrough |
Also Published As
Publication number | Publication date |
---|---|
JPS6348043B2 (en) | 1988-09-27 |
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