JPS5647019A - Aberration correcting method of hologram scanner - Google Patents

Aberration correcting method of hologram scanner

Info

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
Application number
JP12286579A
Other languages
Japanese (ja)
Other versions
JPS6348043B2 (en
Inventor
Yuzo Ono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12286579A priority Critical patent/JPS5647019A/en
Priority to US06/161,970 priority patent/US4378142A/en
Publication of JPS5647019A publication Critical patent/JPS5647019A/en
Publication of JPS6348043B2 publication Critical patent/JPS6348043B2/ja
Granted legal-status Critical Current

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
JP12286579A 1979-06-21 1979-09-25 Aberration correcting method of hologram scanner Granted JPS5647019A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453553A (en) * 1977-10-05 1979-04-26 Fujitsu Ltd Recording and reconstructing method of hologram

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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