GB1248566A - Improvements relating to holographic apparatus - Google Patents

Improvements relating to holographic apparatus

Info

Publication number
GB1248566A
GB1248566A GB5135067A GB5135067A GB1248566A GB 1248566 A GB1248566 A GB 1248566A GB 5135067 A GB5135067 A GB 5135067A GB 5135067 A GB5135067 A GB 5135067A GB 1248566 A GB1248566 A GB 1248566A
Authority
GB
United Kingdom
Prior art keywords
prisms
reference beam
shutter
photographic
laser
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
Application number
GB5135067A
Inventor
John Ackroyd
Peter John Spicer
Bohdan Maciej Watrasiewicz
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.)
British Aircraft Corp Ltd
Original Assignee
British Aircraft Corp Operating Ltd
British Aircraft Corp 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 British Aircraft Corp Operating Ltd, British Aircraft Corp Ltd filed Critical British Aircraft Corp Operating Ltd
Priority to GB5135067A priority Critical patent/GB1248566A/en
Publication of GB1248566A publication Critical patent/GB1248566A/en
Expired legal-status Critical Current

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
    • 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
    • G03H1/2645—Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing
    • G03H1/265—Angle multiplexing; Multichannel holograms
    • 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
    • G03H1/0402—Recording geometries or arrangements
    • G03H2001/0436—Holographic camera
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2222/00—Light sources or light beam properties
    • G03H2222/33—Pulsed light beam

Landscapes

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

Abstract

1,248,566. Halography. BRITISH AIRCRAFT CORP. Ltd. 10 Oct., 1969 [30 Oct., 1968; 17 Jan., 1969], Nos. 51350/67 and 51540/68. Heading C4S. [Also in Division G2] Holographic camera apparatus comprises within a housing 11, a laser 10, a shutter 12, a beam splitter 13, to form an object beam 15 and a reference beam 14, an object 16 and a photographic plate 19 to receive both object and reference beams, a narrow band filter, having a band width equal to that from laser 10, being positioned over the photographic medium. The narrow band filter prevents clogging of the photographic medium by extraneous light. The reference beam 14 passes a density filter and then is reflected by a series of opposed prisms 20, 21. The prisms 21 are mounted for movement toward or away from prism 20 to give an adjustable path length for the reference beam. The photographic film 30, Fig. 2 (not shown), which may be a slide or reel for other medium such as photochromic glass) is held in a frame and underlies the narrow band filter (34). A secondary shutter (36) synchronized with shutter 12 is also located in front of filter 34. When the blind is in position a trip switch 38 actuates the primary shutter 12. To record holograms of larger objects the two adjacent sides of the housing which normally enclose an object 16 are opened outwardly and mirror 16 adjusted accordingly. To compensate for the increased object path length prisms 21 are moved away from prisms 20 to increase the reference beam path length. By pulsing the laser 10 multiple exposure can be made. In this case either the photographic film can be moved or the angle of the reference beam changed for each exposure. The pulsed exposure has particular application in studying stress patterns and vibrating objects. To ensure that the illumination from both the reference and object beams is equal, a photo-cell or grease-spot device 26 is incorporated with the film holder to control the light from the two beams.
GB5135067A 1969-01-17 1969-01-17 Improvements relating to holographic apparatus Expired GB1248566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5135067A GB1248566A (en) 1969-01-17 1969-01-17 Improvements relating to holographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5135067A GB1248566A (en) 1969-01-17 1969-01-17 Improvements relating to holographic apparatus

Publications (1)

Publication Number Publication Date
GB1248566A true GB1248566A (en) 1971-10-06

Family

ID=10459658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5135067A Expired GB1248566A (en) 1969-01-17 1969-01-17 Improvements relating to holographic apparatus

Country Status (1)

Country Link
GB (1) GB1248566A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007964A2 (en) * 1986-06-18 1987-12-30 Holtronic Gesellschaft Für Holographie Und Elektro Holograph camera
EP0271339A2 (en) * 1986-12-11 1988-06-15 Hamamatsu Photonics K.K. An apparatus for optically analyzing an object using four-wave mixing technique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007964A2 (en) * 1986-06-18 1987-12-30 Holtronic Gesellschaft Für Holographie Und Elektro Holograph camera
WO1987007964A3 (en) * 1986-06-18 1988-01-28 Guenther Johann Dausmann Holograph camera
EP0271339A2 (en) * 1986-12-11 1988-06-15 Hamamatsu Photonics K.K. An apparatus for optically analyzing an object using four-wave mixing technique
EP0271339A3 (en) * 1986-12-11 1989-06-07 Hamamatsu Photonics K.K. An apparatus for optically analyzing an object using four-wave mixing technique

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