GB547075A - Television projection system - Google Patents

Television projection system

Info

Publication number
GB547075A
GB547075A GB3318/41A GB331841A GB547075A GB 547075 A GB547075 A GB 547075A GB 3318/41 A GB3318/41 A GB 3318/41A GB 331841 A GB331841 A GB 331841A GB 547075 A GB547075 A GB 547075A
Authority
GB
United Kingdom
Prior art keywords
light
layer
cathode
source
television
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
GB3318/41A
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.)
Farnsworth Television and Radio Corp
Original Assignee
Farnsworth Television and Radio 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 Farnsworth Television and Radio Corp filed Critical Farnsworth Television and Radio Corp
Publication of GB547075A publication Critical patent/GB547075A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector

Abstract

547,075. Cathode-ray tubes with light modulating screens for television. FARNSWORTH TELEVISION & RADIO CORPORATION. March 11, 1941, No. 3318. Convention date, Sept. 7, 1940. [Classes 39 (i) and 40 (iii] A cathode-ray tube for modulating light for producing an image comprises a thin layer 18 of paraffin or other wax capable of being rendered locally transparent in dependence on the heat produced by local electron bombardment, and an optical system is adapted to project the light from a source 1 through a layer 18 and to reflect it back again through the same layer. The reflection is performed by a silver mirror 17 on which the electron beam is focused and scanned, this mirror being connected to the anode 8 to receive the same voltage. The light from the source 1 passes through a lens 2 which focuses the reflected light into an aperture containing lenses 27, which focuses the layer 18 on a viewing screen 29, a prism 28 being provided to deflect the light to the viewing screen. In a modification, the lenses 27 and prism 28 are disposed between the lens 2 and the cathode-ray tube ; and in another modification, the incident beam on the layer 18 is oblique and this layer is viewed directly, the optical system focusing the light source in the observer's eye.
GB3318/41A 1940-09-07 1941-03-11 Television projection system Expired GB547075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US355707A US2315113A (en) 1940-09-07 1940-09-07 Television projection system

Publications (1)

Publication Number Publication Date
GB547075A true GB547075A (en) 1942-08-12

Family

ID=23398493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3318/41A Expired GB547075A (en) 1940-09-07 1941-03-11 Television projection system

Country Status (2)

Country Link
US (1) US2315113A (en)
GB (1) GB547075A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454488A (en) * 1938-04-02 1948-11-23 Thomas W Sukumlyn Light modulation by variable transmissivity receiver screen
FR962782A (en) * 1942-12-15 1950-06-20
US2472988A (en) * 1944-10-28 1949-06-14 Scophony Corp Of America Apparatus for reproducing electric signals, particularly television reproducers
US2445774A (en) * 1945-08-20 1948-07-27 Raytheon Mfg Co Picture receiver utilizing anomalous reflection from silver
US2591308A (en) * 1950-10-20 1952-04-01 Frank K Singiser Light valve system
US3037072A (en) * 1958-10-24 1962-05-29 Lorenzo E Mendoza Portable television system
US3100817A (en) * 1960-06-09 1963-08-13 Ball Brothers Res Corp Image converter and amplifier
US3473864A (en) * 1966-05-19 1969-10-21 Westinghouse Electric Corp Radiation regulating system
US3720232A (en) * 1971-04-20 1973-03-13 R Corliss Fluid pressure responsive valve controller
JPH0950000A (en) * 1995-06-02 1997-02-18 Matsushita Electric Ind Co Ltd Polarizing direction converting illumination device and projection type picture display device

Also Published As

Publication number Publication date
US2315113A (en) 1943-03-30

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