GB1282716A - Holography - Google Patents

Holography

Info

Publication number
GB1282716A
GB1282716A GB43083/68A GB4308368A GB1282716A GB 1282716 A GB1282716 A GB 1282716A GB 43083/68 A GB43083/68 A GB 43083/68A GB 4308368 A GB4308368 A GB 4308368A GB 1282716 A GB1282716 A GB 1282716A
Authority
GB
United Kingdom
Prior art keywords
annular
hologram
reference beam
mirror
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
Application number
GB43083/68A
Inventor
David Leslie Greenaway
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Priority to GB43083/68A priority Critical patent/GB1282716A/en
Publication of GB1282716A publication Critical patent/GB1282716A/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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/88—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/042—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern
    • G11C13/045—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern using photochromic storage elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)

Abstract

1282716 Holography RCA CORPORATION 10 Sept 1969 [20 June 1968 (2) 10 Sept 1968] 43055/68 43082/68 43083/68 Divided out of 1280996 Heading H4D [Also in Division G2] Annular holograms are formed by locating an object on the optic axis of a coherent refence beam so that the reference beam only illuminates an annular area of a recording medium and interferes thereon with a coherent light beam from the object. A single laser beam 200 may be used, that part passing around an object 218 forming an annular reference beam. The central portion of the beam passes through a diffuser 216 and object transparency 218 and is diffracted to holographically interfere with the reference beam portion on an annular hologram plate 214. A circular diffraction grating may be used in place of the diffuser. Alternatively an annular prism 600 may be located at the periphery of a plane coherent light beam 604 to form two beam portions 606 which focus on an object and diverge therefrom to illuminate an annular portion 614 of a hologram plate 612. The object 610 is again illuminated by the central portion 608 of the beam 604. Examples are also given where an annular portion of a parabolic mirror is illustrated by a reference beam, the object being illuminated by a coherent beam passing through an aperture in the centre of the mirror. The hologram plate is then located intermediate the mirror and its focus. The initial beam can be split into two by any conventional mirror or prism arrangement. Real images are reconstituted by re-illuminating the annular hologram with an annular reference beam conjugate with the original reference beam. At any one time only a segment of the annular hologram plate need be utilized for one hologram. Consequently a plurality of adjacent holograms may be sequentially formed on one plate. Two examples are given where the annular hologram is formed without object information, this being included in the reconstructing beam, but one of the forming beams is modified by a multiple lens area. These are disclosed in more detail in Specification 1280996. Acoustic energy may be used in place of coherent light.
GB43083/68A 1968-06-20 1968-09-10 Holography Expired GB1282716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43083/68A GB1282716A (en) 1968-06-20 1968-09-10 Holography

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB4308268 1968-06-20
GB4305568 1968-09-10
GB43083/68A GB1282716A (en) 1968-06-20 1968-09-10 Holography

Publications (1)

Publication Number Publication Date
GB1282716A true GB1282716A (en) 1972-07-26

Family

ID=27259777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43083/68A Expired GB1282716A (en) 1968-06-20 1968-09-10 Holography

Country Status (1)

Country Link
GB (1) GB1282716A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178866A (en) * 1985-08-07 1987-02-18 Anthony John Benbow Robinson Holographic display means
GB2201805A (en) * 1987-02-05 1988-09-07 Anthony John Benbow Robinson Holographic display means having a baffle plate
US6020090A (en) * 1996-09-05 2000-02-01 Denso Corporation Method for producing transparent type hologram
US6198555B1 (en) * 1996-03-25 2001-03-06 Denso Corporation Manufacturing method for a hologram and a related exposure apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178866A (en) * 1985-08-07 1987-02-18 Anthony John Benbow Robinson Holographic display means
GB2178866B (en) * 1985-08-07 1989-11-01 Anthony John Benbow Robinson Holographic display means
GB2201805A (en) * 1987-02-05 1988-09-07 Anthony John Benbow Robinson Holographic display means having a baffle plate
US6198555B1 (en) * 1996-03-25 2001-03-06 Denso Corporation Manufacturing method for a hologram and a related exposure apparatus
US6020090A (en) * 1996-09-05 2000-02-01 Denso Corporation Method for producing transparent type hologram

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees