GB1290577A - - Google Patents

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Publication number
GB1290577A
GB1290577A GB1290577DA GB1290577A GB 1290577 A GB1290577 A GB 1290577A GB 1290577D A GB1290577D A GB 1290577DA GB 1290577 A GB1290577 A GB 1290577A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
image
order
grating
images
colour
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
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

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/42Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4205Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant

Abstract

1290577 Projecting coloured images POLAROID CORP 24 Feb 1970 8831/70 Heading G2J A scene recorded upon an image carrier as an array of regularly spaced colour components R 1 -R 3 Fig. 2 arranged in serially repetitive fashion is projected in magnified form to an image plane 26 through an objective 24 and diffraction grating 28 arranged to diffract the projected image to form at least zero and selectively spaced first order images at said plane 26 wherein substantially any zero order colour components of one of the images has superposed upon it a first order component image of a different colour whereby the array of colour components are caused to blend additively. The diffraction grating may be an amplitude transmission diffraction grating, a fully transmissive pulsed phase grating or comprise a medium of sinusoidally varying optical thickness interposed in the optical path. The gravity is located to form a transhoper diffraction pattern, and where a sinusoidal grating is used this may be formed on an optical surface of a lens in the projection system. The frequency of the grating (e.g. of periodially recurring opaque and light transmisive portions) is selected to cause an order image spacing such that any first order image has superimposed upon it and the first order image of the same colour.
GB1290577A 1970-02-24 1970-02-24 Expired GB1290577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB883170 1970-02-24

Publications (1)

Publication Number Publication Date
GB1290577A true true GB1290577A (en) 1972-09-27

Family

ID=9860055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1290577A Expired GB1290577A (en) 1970-02-24 1970-02-24

Country Status (1)

Country Link
GB (1) GB1290577A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409188A2 (en) * 1989-07-20 1991-01-23 Honeywell Inc. Color matrix display apparatus and method for designing said apparatus
EP0567995A1 (en) * 1992-04-28 1993-11-03 Kuraray Co., Ltd. Image display apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409188A2 (en) * 1989-07-20 1991-01-23 Honeywell Inc. Color matrix display apparatus and method for designing said apparatus
EP0409188A3 (en) * 1989-07-20 1991-12-27 Honeywell Inc. Color matrix display apparatus and method for designing said apparatus
EP0567995A1 (en) * 1992-04-28 1993-11-03 Kuraray Co., Ltd. Image display apparatus
US5513025A (en) * 1992-04-28 1996-04-30 Kuraray Co., Ltd. Image display apparatus

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee