FR1074836A - Improvements to optical devices in which an image is formed on a screen - Google Patents

Improvements to optical devices in which an image is formed on a screen

Info

Publication number
FR1074836A
FR1074836A FR1074836DA FR1074836A FR 1074836 A FR1074836 A FR 1074836A FR 1074836D A FR1074836D A FR 1074836DA FR 1074836 A FR1074836 A FR 1074836A
Authority
FR
France
Prior art keywords
screen
image
optical devices
optical
devices
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
Other languages
French (fr)
Inventor
Knightley Trevor Barlow
Everard Kenneth Brown
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 filed Critical
Application granted granted Critical
Publication of FR1074836A publication Critical patent/FR1074836A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/898—Spectral filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/567—Projection screens for colour projection
FR1074836D 1952-02-12 1953-02-09 Improvements to optical devices in which an image is formed on a screen Expired FR1074836A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB368852A GB752871A (en) 1952-02-12 1952-02-12 Improvements in and relating to optical apparatus

Publications (1)

Publication Number Publication Date
FR1074836A true FR1074836A (en) 1954-10-08

Family

ID=9763070

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1074836D Expired FR1074836A (en) 1952-02-12 1953-02-09 Improvements to optical devices in which an image is formed on a screen

Country Status (3)

Country Link
FR (1) FR1074836A (en)
GB (1) GB752871A (en)
NL (1) NL175996B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL227196A (en) * 1957-04-24

Also Published As

Publication number Publication date
GB752871A (en) 1956-07-18
NL175996B (en)

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