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WO2008025999A3 - Improvements in or relating to optical devices and systems suitable for producing synthesized holograms - Google Patents

Improvements in or relating to optical devices and systems suitable for producing synthesized holograms Download PDF

Info

Publication number
WO2008025999A3
WO2008025999A3 PCT/GB2007/003314 GB2007003314W WO2008025999A3 WO 2008025999 A3 WO2008025999 A3 WO 2008025999A3 GB 2007003314 W GB2007003314 W GB 2007003314W WO 2008025999 A3 WO2008025999 A3 WO 2008025999A3
Authority
WO
WIPO (PCT)
Prior art keywords
beams
holograms
producing
produce
systems suitable
Prior art date
Application number
PCT/GB2007/003314
Other languages
French (fr)
Other versions
WO2008025999A2 (en
Inventor
Robert Adam Munday
Olivier Pitavy
Original Assignee
Spatial Imaging Ltd
Robert Adam Munday
Olivier Pitavy
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 Spatial Imaging Ltd, Robert Adam Munday, Olivier Pitavy filed Critical Spatial Imaging Ltd
Publication of WO2008025999A2 publication Critical patent/WO2008025999A2/en
Publication of WO2008025999A3 publication Critical patent/WO2008025999A3/en

Links

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
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/188—Plurality of such optical elements formed in or on a supporting substrate
    • G02B5/1885—Arranged as a periodic array
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • 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
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H1/0011—Adaptation of holography to specific applications for security or authentication
    • 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
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0236—Form or shape of the hologram when not registered to the substrate, e.g. trimming the hologram to alphanumerical shape
    • 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
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0476—Holographic printer
    • G03H2001/0482—Interference based printer
    • 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
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0493—Special holograms not otherwise provided for, e.g. conoscopic, referenceless holography
    • G03H2001/0497—Dot matrix holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00—Optical components
    • G03H2223/12—Amplitude mask, e.g. diaphragm, Louver filter
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00—Optical components
    • G03H2223/18—Prism
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00—Optical components
    • G03H2223/25—Index matching material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2225/00—Active addressable light modulator
    • G03H2225/30—Modulation
    • G03H2225/31—Amplitude only
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2260/00—Recording materials or recording processes
    • G03H2260/14—Photoresist

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)

Abstract

The invention relates to systems suitable for producing a digital hologram. Various techniques have been proposed. However, a disadvantage of digitisation is that, due to the power of lasers required to produce holograms, there was a risk of damage to coatings of various optical components. The present invention overcomes this problem by way of an optical device including: lenses (656, 660) placed in contact with a beam splitter/combiner (650) so as to produce first and second beams from an incident beam from a coherent source. The beam splitter/combiner is also placed in contact with first and second prisms (652, 654), whereby, in use, the device produces first and second beams which are combined to form two substantially collimated output beams, capable of producing an interference pattern at an output plane. The device may be incorporated into a digital holographic system and is ideally adapted to be retrofitted, so that, under control of suitable software it can be used to produce high quality digital holograms.
PCT/GB2007/003314 2006-09-01 2007-09-03 Improvements in or relating to optical devices and systems suitable for producing synthesized holograms WO2008025999A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0617209A GB0617209D0 (en) 2006-09-01 2006-09-01 Improvements in or relating to optical devices and systems
GB0617209.2 2006-09-01

Publications (2)

Publication Number Publication Date
WO2008025999A2 WO2008025999A2 (en) 2008-03-06
WO2008025999A3 true WO2008025999A3 (en) 2008-07-03

Family

ID=37137147

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/003314 WO2008025999A2 (en) 2006-09-01 2007-09-03 Improvements in or relating to optical devices and systems suitable for producing synthesized holograms

Country Status (2)

Country Link
GB (1) GB0617209D0 (en)
WO (1) WO2008025999A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571937A (en) * 1948-08-27 1951-10-16 Research Corp Interferometer with right-angle reflector surfaces at end of each divided beam
JPH0667007A (en) * 1992-08-19 1994-03-11 Fujikura Ltd Interference exposing device
US6535290B1 (en) * 1998-04-04 2003-03-18 Johannes Heidenhain Gmbh Optical position measuring device with a beam splitter
WO2006003457A1 (en) * 2004-07-07 2006-01-12 Spatial Imaging Limited An optical device, an optical system and a method of manufacturing a holographic optical element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571937A (en) * 1948-08-27 1951-10-16 Research Corp Interferometer with right-angle reflector surfaces at end of each divided beam
JPH0667007A (en) * 1992-08-19 1994-03-11 Fujikura Ltd Interference exposing device
US6535290B1 (en) * 1998-04-04 2003-03-18 Johannes Heidenhain Gmbh Optical position measuring device with a beam splitter
WO2006003457A1 (en) * 2004-07-07 2006-01-12 Spatial Imaging Limited An optical device, an optical system and a method of manufacturing a holographic optical element

Also Published As

Publication number Publication date
WO2008025999A2 (en) 2008-03-06
GB0617209D0 (en) 2006-10-11

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